JPH09270080A - Disaster prevention facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a false alarm of transmission abnormality by providing a means which detects the transmission abnormality, a means which stores the detection frequency of transmission abnormality, and a means which displays transmission abnormality occurrence if the detection frequency stored in the storage means exceeds a specific value. SOLUTION: Various terminal devices such as an analog type fire detector S which detects a fire phenomenon such as smoke, heat, light of a flame, or smell and outputs its physical signal, a transmitter P, and a repeater RP are connected to a fire receiver RE through a couple of signal lines 1 serving as a power supply line. To the repeater RP, an ON/OFF type fire sensor F which outputs a fire signal when detecting a fire phenomenon of specific level, a fire door D, an area bell B, gas leak detector G, etc., are connected. Two-digit hexadecimal addresses are given to those devices in order from the individual terminal device close to the fire receiver RE.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a fire detector, a repeater,
The present invention relates to disaster prevention equipment in which a plurality of terminal devices such as transmitters or controlled devices are connected to a receiver.

[0002]

2. Description of the Related Art Conventionally, when polling is performed, when a fire receiver detects a terminal device having an address in which a transmission error has occurred or a group having a terminal device in which a transmission error has occurred, another terminal device or When the polling for the terminal device is interrupted and the polling is performed again for the terminal or group, and the transmission error occurs continuously, the receiving unit recognizes that the transmission error has truly occurred, and Was displayed on the receiving part or the like.

[0003]

However, according to the detection of the transmission abnormality, the collection of the status information or the like from the other terminal device or the other group having the terminal device is delayed by the time for carrying out the polling again. As a result, the time required for polling the entire terminal device belonging to the disaster prevention facility or the entire group having the terminal device increases.

It is an object of the present invention to provide a disaster prevention facility capable of preventing a false alarm of a transmission abnormality and reliably displaying the transmission abnormality.

Another object of the present invention is to provide a disaster prevention facility that can continue polling even if a transmission abnormality occurs.

[0006]

The present invention is a fire detector,
In a disaster prevention facility in which a plurality of terminal devices such as a repeater, a transmitter, or a controlled device is connected to a receiver, a detection unit that detects the transmission error when the terminal device has the transmission error, and the transmission error The storage means stores the number of detection times and the display means that displays a transmission abnormality occurrence when the number of detection times stored in the storage means exceeds a predetermined value.

Further, the present invention is a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter or a controlled device are connected to a receiver, even when a transmission abnormality occurs in the terminal device. , Continue polling.

[0008]

1 is a system diagram of an embodiment of disaster prevention equipment according to the present invention.

In FIG. 1, a fire phenomenon such as smoke, heat, light of a flame, gas or odor is detected and a physical quantity signal is detected by the fire receiver RE through a pair of signal lines l also serving as power lines. Output analog fire detector S (photoelectric type, dimming type,
Plural, for example, 255, various terminal devices such as smoke type such as ionization type, thermal type, flame type, gas type, odor type fire detector), transmitter P, repeater RP and the like are connected. An on / off type fire detector F, which outputs a fire signal when a fire phenomenon of a predetermined level is detected, a fire door D, a district bell B, a gas leak detector G, etc. are connected to the relay RP. Here, addresses are sequentially assigned to these terminal devices by a 2-digit hexadecimal number for each individual terminal device from the side close to the fire receiver RE. That is, each terminal device has 00h, 01h, 02h, ...
.., FEh and other addresses are assigned. still,
Hexadecimal numbers shall be displayed by adding h after numbers or letters. However, the address is also indicated by a decimal number for convenience of description below.

Further, the terminal devices with addresses 00h to FEh are divided into 16 groups G0 to G15 in order from the side closer to the fire receiver RE.

Therefore, as shown in FIG.
16 terminals each belong to 0 to G14, and 15 terminals each belong to the group G15.

By the way, in this embodiment, each of the 255 terminal devices is provided with a different unique address consisting of 8 bits of 00h to FEh. 2 (1) and 2 (2) show, as an example of the address, a code composed of 8 bits of the 10th and 255th terminal devices. Then, as shown in FIG. 2, each address of this terminal device is divided into upper 4 bits (hereinafter referred to as upper digit) and lower 4 bits (hereinafter referred to as lower digit). The lower digit represents the terminal number within the group. That is, in the case of the terminal device having the address 10, since the upper digit of the address code is 0h of “0000”, it is the 0th group, and the lower digit is Ah of “1001”. This is a terminal device, and 0Ah in which the upper digit and the lower digit are fused indicates that the overall address is 10. In addition, the terminal device with an address of 255 has an F in the upper digit "1111".
Since it is h, the lower digit is “1110” in the 15th group.
Since it is Eh, it indicates that it is the fifteenth terminal device in the group, and FEh that fuses the upper digit and the lower digit indicates that the overall address is 255.

Therefore, in this embodiment, the entire address is indicated by the entire 8-bit code, and further, this address indicates the group number by the upper digit and the terminal number within the group by the lower digit (hereinafter referred to as the terminal number within the group). Is shown.

As described above, since an address displayed with a plurality of digits is assigned to each of a plurality of terminal devices and a group number is represented by a specific digit in the address, the "point
In the "group information collection frame" of "polling", as will be described later, a terminal device having a group number indicated by the particular digit in the address in common can be called at the same time by polling, and the called The response timing can be assigned to each terminal device by utilizing the fact that the group numbers are common and the terminal numbers are different.

The fire receiver RE, which will be described in detail later, polls each of the above terminal devices in a point polling mode, a system polling mode, and a selecting mode to collect predetermined information from a predetermined terminal device or to collect predetermined information. It controls the terminal device. Note that, hereinafter, “polling” means point polling or system polling, and excludes selecting.

The "point polling" consists of a "group information collection frame" and a "transmitter detection frame", as shown in FIG.

The "group information collection frame" will be described. In this frame, 255 terminal devices are grouped into 16 groups as described above, instead of sequentially polling each of the terminal devices. The fire receiver RE makes a call for each group. Each terminal device belonging to the called group sequentially returns the requested data such as the status information or the type information ID to the fire receiver RE at the response timing assigned to each terminal device. Here, when the terminal device is an analog type fire detector, the physical quantity data of the detected fire phenomenon is connected to the terminal device, and in the case of the repeater RP, the on / off type fire detector F or the gas leak detector G is connected. When there is a fire signal or gas leak signal, when the controlled equipment such as fire door D or district bell B is connected, whether the equipment is open / closed, operating or not In the case of a transmitter, it is the data indicating whether or not the push button switch has been pressed and is operating.

The predetermined information collected in the "group information collection frame" is called "group information".

The "transmitter detection frame" is a frame that is artificially operated by the transmitter P, and its operation information is highly reliable. Therefore, it is a frame provided for promptly collecting the operation information. Therefore, as shown in FIG. 3, the transmitter detection frame calls all transmitters belonging to this disaster prevention facility at the same time after the "group information collection frame" is performed for one group, In response to the call, the calling transmitter returns its own address to the fire receiver RE in the designated time slot. Hereinafter, in the "transmitter detection frame", the above addresses collected are referred to as "reporting transmitter address information". Further, in the case of the present embodiment, when a plurality of transmitters P issue a report, the transmitter with the smallest address stops transmission, and only the one transmitter with the largest address returns. The details will be described later.

"System polling" is the fire receiver R
E transmits a predetermined control command to the terminal device to control all the terminal devices. Here, as the control command given to the plurality of terminal devices by the fire receiver RE at the time of the system polling, for example, a fire restoration command (an analog fire detector S or a repeater RP that has sent a fire signal) is used.
Terminal device such as a repeater RP ringing district bell B
Command to restore the terminal device etc. to the normal monitoring state),
Storage recovery command (command to recover terminal devices such as fire detectors and repeaters that sent fire signals in order to perform storage operation to determine whether or not the fire condition has continued for a predetermined time), district sound stop There is an instruction (an instruction to stop the ringing bell B).

In "selecting", a predetermined control command is transmitted by designating the address to an arbitrary terminal device,
It controls the terminal device or sends a request command for status information or classification information ID to any terminal device to collect the status information or classification information ID from each terminal device.

FIG. 3 is a time chart showing an embodiment of the present invention.

The operation proceeds from the upper left to the upper right in FIG. 3, and the operation proceeds from the right end to the left end of the next lower stage, and the processing sequentially proceeds as described above. Also, FIG.
The middle of the horizontal line shows the transmission signal from the fire receiver RE, and the bottom of the horizontal line shows the transmission signal from the terminal device.

First, the codes AD, CM1, CM2, PS sent from the fire receiver RE to the terminal device, and the codes D1, S sent from the terminal device to the fire receiver RE.
S, DA, and Da will be described.

Here, the above codes AD, CM1, CM
2, PS, D1, SS, DA, and Da are, for example, a start bit, an 8-bit data area, and a total of 1 end bit.
It consists of 0 bits. Therefore, when transmitted from the fire receiver RE to the terminal device, or when transmitted from the terminal device to the fire receiver RE, they are represented as 10-bit binary numbers, one bit at a time starting from the upper digit. Sent out. In the following, for convenience of explanation, the above AD and C
The 8-bit data area indicating the contents of M1, CM2, PS, D1, DA, Da, and SS is represented by a 2-digit hexadecimal number.

First, from the fire receiver RE to the terminal device, AD as an address, CM1 as a command,
CM2 and PS are transmitted as the primary sum check code. Here, the address AD is 2 from 00h to FFh.
It is a hexadecimal number of digits, and in the case of 00h to FEh (that is, in the case of AD ≠ FFh), it indicates the address of the terminal device provided in the disaster prevention facility to operate in selecting (hereinafter referred to as selecting address code. , And FFh indicates point polling or system polling (hereinafter referred to as a polling instruction). The command CM1 is also a 2-digit hexadecimal number, and when selecting (that is, AD ≠ FFh)
The CM1 indicates that the selection is for a fire test command 82h, and a confirmation light extinction control command 83h for extinguishing the confirmation light of the fire detector.

When the polling command (AD = FFh) is issued, the command CM1 indicates the kind of polling to be performed. That is, when CM1 is 0Xh, point processing is performed, that is, a point processing command is issued, and when CM1 is FXh, system processing is performed, that is,
Indicates a system processing instruction. Here, X is a hexadecimal number from 0h to Fh. Further, in this case, the content of the polling is shown. For example, CM1 00h is the point polling and the type information ID return command, 01h is the point polling and the state information return command, F
0h is system polling, fire recovery command,
In the case of F1h, it is a system polling and storage restoration command, F2h is a system polling, district sound stop command, F3h is a system polling,
Indicates an emergency broadcast stop command respectively.

Next, the command CM2 is also a 2-digit hexadecimal number and is not used in the case of selecting and system polling.

In the case of point polling, the command CM2 indicates, by the lower digit, a group to which predetermined information should be returned in the polling (that is, a group designation code in point polling). For example, CM2 is represented by 0Xh. Here, X is a hexadecimal number from 0h to Fh. This X represents a group number for which predetermined information should be returned.

Furthermore, the primary sum check code PS
Is a code used by the terminal device to confirm whether or not the transmission from the fire receiver RE is normally performed,
It is obtained from the above AD, CM1, and CM2 by a predetermined calculation, which will be described later in detail.

On the other hand, in the case of point polling, each terminal device receives D1 as status information or type information ID,
SS is sent to the fire receiver RE as the secondary sum check code. In the case of selecting, its own address DA, Da as return data, and SS as secondary sum check code are sent to the fire receiver RE. still,
In the case of system polling, the terminal device returns nothing. Here, the return data Da is information indicating that when the control information such as the status information of the terminal device, the type information ID or the fire recovery instruction is received, the operation is performed according to the control instruction.

The secondary sum check code SS is a code used by the fire receiver RE to confirm whether or not the transmission from the terminal device is normally performed. In the case of point polling, the above AD, CM1, CM2, P
From S and D1, and in the case of selecting, A above
It is obtained from D, CM1, CM2, PS, DA, Da by a predetermined calculation, which will be described later in detail.

An example of the operation will be described below with reference to FIG.

As shown in FIG. 3, the point polling consists of a "group information collection frame" and a "transmitter detection frame". Further, the group information collection frame has a "receiver field" in which the receiver calls the terminal device, a "first waiting field WF1" in which transmission is not performed between the receiver and the terminal device, and the called terminal device. Consists of the "terminal device field" for signal transmission, and the "transmitter detection frame" is between the "transmitter field" for signal transmission between the receiver and transmitter and between the receiver and terminal device. It is composed of a "second weighting field WF2" in which signal transmission is not carried out.

First, as shown in FIG. 3, at P0, the "receiver field" in the "group information collection frame", which is one operation of point polling, is started. That is, the fire receiver RE is FFh, C as AD.
01h as M1, 00h as CM2, and a predetermined PS are transmitted.

On the other hand, the terminal device belonging to each group that has received the above-mentioned command, etc., makes the first weighting when the group number indicated by the lower digit of its own address matches the group number received from the fire receiver RE. After the end of the field WF1, the return data D1 and the secondary sum check code SS are returned to the fire receiver RE.

When each terminal device returns the requested data, one of the groups that received the call is sent.
At the response timing assigned to each of the six terminal devices, data is sequentially returned from the terminal device with the smallest terminal number.

On the other hand, the fire receiver RE enters the terminal device field consisting of 16 slots for receiving the status information from each terminal device after the first waiting field WF1 has passed, and in this terminal device field, The terminal devices with terminal numbers 0 to 15 sequentially send the return data D1 and the secondary sum check code SS for each time slot corresponding to the terminal number of each terminal device, and the fire receiver RE is sent from each terminal device. Collected data.

When this terminal field ends, one operation of point polling, "transmitter detection frame", starts in the CP, and the fire receiver RE transmits the transmitter P.
It sends out a transmitter call pulse PC for calling only. When the push button of a certain transmitter is operated to issue the alarm, the transmitter P transmits its own address ADp immediately after the receiver receives the transmitter calling pulse. Since the transmitter calling pulse PC also serves as a start bit from the transmitter, the transmitter P is represented by 8 bits.
It is possible to synchronize the return timing of the address ADp. In this way, the fire receiver RE
The address information of the issued transmitter can be obtained.

In this "transmitter detection frame", the fire receiver RE enters the second waiting field WF2 when the transmitter field ends, and when the second waiting field WF2 ends, the group number 0
The point polling (point polling (G0)) that is performed by designating the group is completed.

Then, the command CM2 for designating the group is incremented by 1, and the "point polling" (point polling (G1)) designated by the group with the group number 1 is started in P1, and the above operation is performed. Is repeated again. Although not shown, P2, P3 ,. . . , P14, each group number 2h ,. . . , Fh are designated to start "point polling", and the above operation is repeated again.

[Points ...
After "polling" is completed, although not shown, point polling for collecting the type information ID is performed, and the fire receiver RE sets FFh as AD and 00 as CM1.
h, 01h as CM2, and a predetermined PS are transmitted, and type information ID is transmitted from each terminal device as return data D1 in the terminal device field instead of the state information of each terminal device. Note that, except for the return data D1, basically the same operation as the point polling for collecting the above status information is performed by designating the group of the group number 0h. Then, from the group number 0h to the group number F
"Point polling" is performed by specifying the group h, and the fire receiver RE collects the type information ID from each terminal device. After the "point polling" for designating the group with the group number Fh is completed, the "point polling" for collecting the status information is started as described above.

Next, system polling will be described.

In P16 of FIG. 3, for example, the operator issues a command from the operation unit OP of the fire receiver RE to instruct the fire receiver RE to perform system polling.
The fire receiver RE inputs a polling command (AD = FFh) and a fire recovery command (CM1 = F0) as a command indicating system polling for carrying out a fire recovery.
h) and the primary sum check code PS are sequentially transmitted.

In this embodiment, in the case of system polling, the terminal device does not return to the fire receiver RE, but a response signal indicating that the command signal has been received is returned. You may

In addition, in the system polling, in the case where the contents of the storage restoration are the contents, the control of the district sound stop is the contents, or the contents of the control of the emergency broadcast stop are the contents, a fire restoration command is issued. (CM1 = F0h)
Storage restoration command (CM1 = F1h), district sound stop command (CM1 = F2h), emergency broadcast stop command (CM1 = F)
3h) is basically the same as the system polling whose contents are the implementation of the above-mentioned fire recovery.

Next, selecting will be described.

In P17 of FIG. 3, for example, the operator inputs a command to the fire receiver RE from the operation unit OP of the fire receiver RE to perform a selection for turning off the confirmation light of the terminal device having the address 12h. Then, the fire receiver RE uses the address (AD = 12h) of the terminal device to be selected and the confirmation light extinction control command (CM1) as a command indicating selection for extinguishing the confirmation light.
= 83h) and the primary sum check code PS are sequentially transmitted.

The address at which this signal is received is 12
The terminal device of h has its own address DA and return data D.
a, a secondary sum check code SS is returned. At this time, the return data Da contains data indicating that the confirmation lamp is in the off state.

Furthermore, in addition to the above confirmation light extinction control command (CM1 = 83h), the fire test command (CM1 = 82h), confirmation light lighting control command (CM1 = 84h), CL Control command (CM1 = 8
5h), start / return command for the smoke proof smoke repeater (CM1 = 86
h), interlocking ringing control command (CM1 = 87h), manual ringing control command (CM1 = 88h), SCI disconnection control command (C
M1 = 89h), fire recovery command (CM1 = F0h), storage recovery command (CM1 = F1h) District sound stop command (CM)
1 = F2h), emergency broadcast stop command (CM1 = F3h),
There is a type information ID return command (CM1 = 00h), a state information return command (CM1 = 01h), etc., and is basically the same as the above-described selecting with the confirmation light turned off, except that the command content is different. is there.

Next, a case in which a plurality of transmitters issue an alarm in the "transmitter detection frame" of "point polling" will be described with reference to FIG.

FIG. 4 shows a time chart when three transmitters operate.

In FIG. 4, the transmitter calling pulse PC output at the timing CP from the fire receiver RE is shown in the uppermost stage, and the issued transmitters A, B, C are shown in the 2nd to 4th stages.
The address signals sent from the are shown. FIG.
In the description, each address is represented by a decimal number instead of a hexadecimal number for convenience of description. Here, the address of the transmitter A is 181 (decimal number, which is represented by 8 bits 2
Expressed as a decimal number, 10110101), the address of transmitter B is 96 (decimal number, which is represented by 8 bits. 2
The address of the transmitter C is 204 (decimal number, 1101100 when expressed as a binary number represented by 8 bits). When each transmitter A, B, C receives the transmitter call pulse PC from the fire receiver RE at the timing CP, it starts to send its address one bit at a time from the most significant bit following the transmitter call pulse PC. To do. Here, since the address of the transmitter B is 01100000 (binary number), the most significant bit is 0. On the other hand, the address of transmitter A is 1011
0101 (binary number), the address of transmitter C is 11001
Since it is 100 (binary), the most significant bit is 1, respectively.

Therefore, the transmitter B is sending 0, that is, the inactive level, while the signal line is at the active level indicating 1 and therefore the transmitter B is concerned.
Judges that a transmitter with an address larger than its own address is transmitting a signal, and suspends transmission of its own address. Next, the transmitter A and the transmitter C which are transmitting addresses are compared with respect to the next (next lower) bit of each address. Then, for transmitter A, bit 0, transmitter C
For, the bit is 1. Therefore, the transmitter A is sending out the inactive level, while the state of the signal line is at the active level.
Judges that a transmitter having an address larger than its own address is transmitting a signal and suspends transmission of its own address. As a result of the above operation, the transmitter finally sending out its own address is the transmitter C having the largest address among the operated transmitters.
Will be the only one. Then, as shown in the lowermost part of FIG. 4, the signal on the transmission is transmitted with the address of the transmitter C being 8 bits with the transmitter calling pulse from the fire receiver RE as the start bit.

FIG. 5 is a block diagram showing an example of the fire receiver RE in the above embodiment.

The fire receiver RE is a microprocessor M
PU1 and ROM (Read Only Memory) 11 to 13,
RAM (Random Access Memory) 11 to 19 and IF1
1 to 13, a signal transmitting / receiving unit TRX1, an operation unit OP,
It has a display portion DP and a timer Tslt. ROM11
Is a storage area for programs and the like relating to the flowcharts shown in FIGS. The ROM 12 is a terminal map table storage area for the address of each terminal device, that is, the group number and the terminal number, and the type information ID. RO
M13 is an interlocking control table storage area showing an interlocking control relationship between the fire area and a controlled device such as a fire door to be controlled. The RAM 11 is a work area. RAM12
Is a storage area of the return data D1 and the secondary sum check code SS returned from the terminal device in the group information collection frame of the point polling, and the RAM 121 for storing the return data D1 and the RAM 122 for storing the secondary sum check code SS. Consists of. The RAM 13 is a storage area of addresses of various terminal devices and type information IDs. In addition, at the time of initial setting, the address and type information ID of each terminal device stored in the ROM 12 are loaded into the RAM 13, and thereafter, by replacing the terminal device, etc.
When it is necessary to change these addresses and type information IDs, these can be changed by operating the operation unit OP. When the type information ID is returned in the group information collection frame of point polling, the type information ID previously stored in the RAM 13
Is updated to the returned type information ID. RAM1
Reference numeral 4 is a storage area for storing the address AD, the command CM1, the command CM2, and the primary sum check code PS to be transmitted to the terminal device in the group information collection frame. The RAM 14 is a RAM 141 that stores the address AD and a RAM 14 that stores the command CM1.
2. A RAM 143 for storing the command CM2 and a RAM 144 for storing the primary sum check code PS. The RAM 15 is a storage area of the address of the transmitter returned in the transmitter detection frame of the point polling. The RAM 16 stores a variable fx (hereinafter, referred to as a variable indicating the number of times the transmission abnormality is detected for the terminal device whose address is x).
A transmission abnormality detection variable) is stored for each address.
Here, the transmission abnormality detection variable fx is represented by a decimal system. The RAM 17 is a storage area for storing the address AD, the command CM1, and the primary sum check code PS to be transmitted to the terminal device in the system polling. still,
The RAM 17 is a RAM 171, which stores an address AD,
RAM 172 for storing command CM1, command CM
2 and a RAM 173 for storing 2. RAM 18
This is a storage area for storing an address AD, a command CM1, and a primary sum check code PS to be transmitted to a terminal device in selecting. The RAM 18 is composed of a RAM 181 for storing the address AD, a RAM 182 for storing the command CM1, and a RAM 183 for storing the primary sum check code PS. The RAM 19 is a storage area for the self-address DA of the terminal device, the return data Da, and the secondary sum check code SS returned from the terminal device in selecting. The RAM 19 is a RAM 191 for storing the self-address DA of the terminal device and the return data D.
RAM 192 for storing a and secondary sum check code S
And a RAM 193 storing S. Timer Tslt
Is a timer for managing the start time and end time of the slot for receiving the status information and the transmitter slot. I
F11 is an interface that connects the operation unit OP and the microprocessor MPU1. The IF 12 is an interface that connects the display unit DP and the microprocessor MPU1. IF13 is a signal transceiver TRX
1 is an interface for connecting the microprocessor 1 and the microprocessor MPU1. The signal transmitting / receiving unit TRX1 includes a parallel / serial converter, a transmission circuit, a reception circuit, a serial / parallel converter, and the like. OP is an operation unit, and is provided with various switches, ten keys, and the like. The DP is a display unit, and is provided with various display lights, CRT, and the like. FIG. 6 is a block diagram showing an analog photoelectric fire detector S as an example of the terminal device in the above embodiment.

The analog photoelectric fire detector S comprises a microprocessor MPU2, ROM21 and ROM22,
RAMs 21 to 28, IFs 21 to 26, a signal transmitting / receiving unit TRX2, a light emitting diode LD as an example of a smoke detecting light emitting element, a photodiode PD as an example of a light receiving element, and emits light by generating pulses at predetermined time intervals. , Sensor processing such as light reception, that is, smoke detection operation is performed by the light emitting diode L.
A clock generation source CLK performed by driving D and the photodiode PD, a light emitting diode LED as an operation confirmation lamp, a timer Td, and a light emitting diode L.
A light emitting circuit LDC for causing D to emit light with a predetermined light emission amount, and a light receiving circuit PDC having an amplifier circuit and a sample hold circuit
And a light emitting circuit LEDC for controlling the turning off and lighting of the operation confirmation lamp LED, and a fire test circuit TE for increasing the sensitivity of the light receiving portion to a predetermined value and performing a fire test. R
The OM 21 is a storage area for programs such as point processing, system processing, and selecting processing. The ROM 22 is a storage area of its own address and type information ID, in which the group number to which it belongs and the upper digit are used as the group number and the lower digit is also used as the terminal number. A dip switch or the like may be used instead of the ROM 22. The RAM 21 is a work area. The RAM 22 is an area for storing information on the current physical quantity of smoke. The RAM 23 is a storage area for the timing of returning the status information of the terminal number m in the group itself to the fire receiver RE, that is, the slot allocated to itself. still,
The return timing is calculated from the in-group terminal number m indicated by the lower digit of its own address immediately after the initial setting, and is hereinafter indicated by the information return start time Tdm.

The RAM 24 stores the address AD, command CM1, command CM2, received from the fire receiver RE in the point polling group information collection frame.
This is an area for storing the primary sum check code PS.
The RAM 24 is a RAM 24 that stores the address AD.
1, a RAM 242 for storing the command CM1, a RAM 243 for storing the command CM2, and a RAM 244 for storing the primary sum check code PS.

The RAM 25 is an area for storing the return data D1 and the secondary sum check code SS to be sent to the fire receiver RE in the point polling group information collection frame. The RAM 25 stores the return data D1.
251 that stores the data and the secondary sum check code SS
And a RAM 252 for storing.

The RAM 26 is a storage area for storing the address AD, the command CM1, and the primary sum check code PS in system polling. The RAM 26
Is a RAM 261 for storing an address AD, a command C
The RAM 262 stores M1 and the RAM 263 stores the primary sum check code PS.

The RAM 27 is a storage area for storing the address AD, the command CM1, and the primary sum check code PS in selecting. The RAM 27 is composed of a RAM 271 for storing the address AD, a RAM 272 for storing the command CM1, and a RAM 273 for storing the primary sum check code PS.

The RAM 28 is a storage area for the self address DA of the fire detector S, the return data Da, and the secondary sum check code SS returned in the selecting operation. The RAM 28 is an RA for storing its own address DA.
It is composed of a RAM 282 for storing M281, return data Da, and a RAM 283 for storing the secondary sum check code SS.

The IF 21 is an interface for connecting the clock CLK and the microprocessor MPU2. The IF 22 is an interface that connects the fire test circuit TE and the microprocessor MPU2. IF
23 is a signal transmitting / receiving unit TRX2 and a microprocessor M
This is an interface for connecting to PU2. IF24
Is an interface for connecting the light receiving circuit PDC and the microprocessor MPU2. The IF 25 is an interface that connects the light emitting circuit LEDC and the microprocessor MPU2. The IF 26 is an interface that connects the light emitting circuit LDC for smoke detection and the microprocessor MPU2. Td is a return timing management timer that manages a data return start time and the like. The signal transmitting / receiving unit TRX2 is similar to the signal transmitting / receiving unit TRX1.

Although not shown, the analog type fire detector S is not limited to the photoelectric type shown in this embodiment, and may be a thermal type, a flame type, a gas type, an odor type or the like. In this case, the smoke detecting light emitting diode LD and its light emitting circuit L
In the case of a thermal analog fire detector, a thermistor and its detection circuit as a heat-sensitive means are provided in place of DC, the photodiode PD and its light receiving circuit PDC, and in the case of a flame analog fire detector, A light receiving element such as a pyroelectric element or an ultraviolet ray detection element and its detection circuit are provided.In the case of a gas type analog fire detector, a gas sensor and its detection circuit are provided, and in the case of an odor type, an odor sensor and The basic structure is the same except that the detection circuit is provided.

FIG. 7 is a block diagram showing a repeater RP as an example of the terminal device in the above embodiment.

The repeater RP is a microprocessor MPU.
3, ROM 31, ROM 32, and RAMs 31 to 38
And IF31 to 38, a timer Td that is a return timing management timer that manages a data return start time, and a fire signal reception circuit FSR that receives a fire signal from an on-off type fire detector connected to the relay RP. And a fire test circuit TE for performing a fire test by increasing the sensitivity of the light receiving part of the on / off type fire detector connected to the repeater to a predetermined value, and a district sound control circuit LAC for controlling a district bell (not shown). And a CL inter-CL control circuit CLR for controlling ON / OFF of the power supply between the fire receiver RE and the repeater RP, and an anti-smoke control circuit BH for controlling opening / closing of the fire door D not shown.
It has an R, a repeater RP, an SCI disconnection control circuit SCR for controlling on / off of the power supply at the end of the signal line, a broadcast control circuit BAC for controlling alarm generation from a speaker (not shown), and a signal transmitting / receiving unit TRX3. The ROM 31 is shown in FIG.
It is a storage area for programs and the like relating to the flowcharts shown in FIGS. The ROM 32 is a storage area for the self-address, the type information ID, etc., whose upper digit is used as a group number and whose lower digit is also used as a terminal number. The ROM 32
A dip switch or the like may be used instead of. RA
M31 is a work area. The RAM 32 is a storage area for present state information, that is, whether or not the on / off type fire detector F is sending out a signal that a fire has occurred. RAM
Reference numeral 33 is a storage area of a slot assigned to itself, that is, the timing of returning its own status information of the terminal number m in the group to the fire receiver RE. Hereinafter, this timing is indicated by the information return start time Tdm. The return timing is set at the time of initial setting (see FIG.
Immediately after (U1) in FIG. 6, it is calculated from the terminal number indicated by the lower digit of its own address (U2 in FIG. 16). RAM34
Is an area for storing the address AD, the command CM1, the command CM2, and the primary sum check code PS received from the fire receiver RE in the point polling group information collection frame, and the RAM 341 for storing AD,
RAM 342 for storing CM1, RA for storing CM2
It consists of M343 and RAM344 which stores PS. RA
M35 is return data D1 to be sent to the fire receiver RE in the point polling group information collection frame.
And D in the area for storing the secondary sum check code SS
RAM 351 storing 1 and RAM 35 storing SS
Consists of two. The RAM 36 is a RAM that stores AD in the storage area that stores the address AD, the command CM1, and the primary sum check code PS in system polling.
361, a RAM 362 for storing CM1, and a RAM 363 for storing PS. The RAM 37 is a storage area for storing the address AD, the command CM1, and the primary sum check code PS in selecting, and the address A
RAM371 for storing D, RAM3 for storing CM1
72, and a RAM 373 for storing PS. RAM
38 is a storage area for storing the address DA of the terminal device's own address DA, return data Da, and secondary sum check code SS returned in the selecting operation.
The RAM 382 stores M381 and Da, and the RAM383 stores SS. The IF 31 is an interface that connects the fire signal reception circuit FSR and the microprocessor MPU3. The IF 32 is an interface that connects the fire test circuit TE and the microprocessor MPU3. The IF 33 is an interface that connects the district sound control circuit LAC and the microprocessor MPU3. The IF 34 is an interface that connects the CL control circuit CLR and the microprocessor MPU3. The IF 35 is an interface that connects the smoke emission control circuit BHR and the microprocessor MPU3.
The IF 36 is an interface that connects the SCI disconnection control circuit SCR and the microprocessor MPU3. I
F37 is a broadcast control circuit BAC and a microprocessor MP
This is an interface for connecting to U3. IF38
Is a signal transmitting / receiving unit TRX3 and a microprocessor MPU.
It is an interface for connecting to the 3 and. The signal transmitting / receiving unit TRX3 is similar to the signal transmitting / receiving unit TRX1. Here, in the above embodiment, the on / off type fire detector, the district bell, the fire door, and the speaker are connected to one repeater, but at least one of these devices is connected to the repeater. You may comprise.

FIG. 8 is a block diagram showing the transmitter P in the above embodiment.

The transmitter P is a microprocessor MPU4.
ROM41, ROM42, RAM41-49,
IF41-43, signal transmission / reception part TRX4, switch SW of push button type etc. which should be operated at the time of fire, light emitting diode LED as a response lamp, response lamp LED
And a bit timer Tb. The ROM 41 is a storage area for programs such as the flowcharts shown in FIGS. 18 and 19. RO
M42 is a storage area of a self address in which the upper digit is used as a group number and the lower digit is also used as a terminal number. A dip switch or the like may be used instead of the ROM 42. The RAM 41 is a work area. RA
M42 is an area for storing current operation information. RA
M43 is an area for storing the timing of returning its own operation information to the fire receiver RE in the operation shown in FIGS. Note that the timing is the same as in the case of the analog photoelectric fire detector S, immediately after the initial setting, the terminal number m in the group indicated by the lower digit of its own address.
Is calculated from The RAM 44 is an area for storing its own address setting, which is transmitted in FIGS. 18 and 19 when the transmitter is operating, that is, when an alarm is issued. RAM45 is
Address AD, command CM1, command CM2, primary sum check code PS received from fire receiver RE in the point polling group information collection frame
RAM 451 for storing AD in the area for storing CM
RAM452 for storing 1 and RAM4 for storing CM2
53 and a RAM 454 for storing PS. RAM
Reference numeral 46 is an area for storing the return data D1 to be sent to the fire receiver RE and the secondary sum check code SS in the group information collection frame for point polling, and comprises a RAM 461 for storing D1 and a RAM 462 for storing SS. The RAM 47 uses the address AD and the command C received from the fire receiver RE during system polling.
M1, the area for storing the primary checksum code PS,
RAM 471 for storing AD, RAM for storing CM1
472 and a RAM 473 for storing PS. RA
M48 is an area for storing the address AD, the command CM1, and the primary sum check code PS received from the fire receiver RE in selecting, and R for storing AD.
It includes an AM 481, a RAM 482 for storing CM 1, and a RAM 483 for storing PS. The RAM 49 is an area for storing its own address DA to be sent to the fire receiver RE, return data Da, and a secondary sum check code SS in the selection, and stores RAM 491 for storing DA and RAM 492 and SS for storing Da. RAM4
93. The IF 41 is an interface that connects the signal transmitting / receiving unit TRX4 and the microprocessor MPU4. The IF 42 is a push button type switch S.
This is an interface for connecting W and the microprocessor MPU4. The IF 43 is an interface that connects the light emitting circuit LEDC as a response lamp and the microprocessor MPU4. The signal transmitting / receiving unit TRX4,
It is similar to the signal transmitting / receiving unit TRX1. Further, the bit timer Tb is a management timer for preventing the transmitter calling pulse, which will be described later, from overlapping the address transmission signal and the address transmission signal.

FIG. 9 is a diagram showing a system flowchart of the fire alarm receiver RE in the above embodiment. First,
After the fire alarm system is started up by turning on the power, initialization is performed (S1), and the transmission abnormality detection variable fx for all addresses is set to 0, for example. Then, it is determined whether or not a selecting command such as turning off of the confirmation light is input by the operator from the operation unit OP of the fire receiver RE (S2), and when it is determined that the command is not input ( (N of S2), it is determined whether or not the system polling command is input by the operator from the operation unit OP of the fire receiver RE (S3), and when it is determined that the command is not input (N of S3). ), Point polling is performed (S4), the process returns to S2 again, and the above operation is repeated. When it is determined in S2 that the operator has input a selecting command such as turning off the confirmation light from the operation unit OP of the fire receiver RE,
Selecting is performed (S6). Also, in S3,
The system polling command is the operation part OP of the fire receiver RE.
If it is determined that the input is made by the operator (Y in S3), system polling is performed (S5).
Therefore, if there is no input from the operation unit OP by the operator, the point polling in S4 is performed. The detailed contents of each polling and selecting operation are input by the operator from the operation unit OP of the fire receiver RE, and AD, CM1, CM2, P based on the input.
The contents of S are determined, and various polling and selecting are performed.

FIGS. 10 to 12 are flowcharts specifically showing the point polling (S4) in FIG.

Here, the above-mentioned "group information collection frame" corresponds to S401 to S431, and the "transmitter detection frame" corresponds to S432 to S438.

First, a polling command (AD = FFh),
Status information return command in point polling (CM1
= 01h) and the group designation code (for example, CM2 = 00h) in point polling are stored in the RAM 14
1, RAM 142, RAM143 (S401)
~ S403).

Next, the AD of the RAM 141 and the RAM 142
The number of active bits of the transmission byte of CM1 of CM1 of CM2 of CM1 of RAM143 is counted (S404), each count value is obtained, and an additional value is obtained by adding this count value (S405). Next, the added value is inverted to obtain an inverted value (S406). The most significant bit of this inverted value is deleted to obtain the primary sum check code PS (S40
7). This primary sum check code PS is stored in the RAM 144
(S408). And RAM141-RA
Address AD and command CM stored in M144
1, the command CM2, and the primary sum check code PS are sequentially transmitted from the signal transmitting / receiving unit TRX1 (S409).
Next, the management timer Tslt is started (S41
0), and m is reset to 0 (S411). Here, m is a hexadecimal number indicating the in-group terminal number.
If the timer Tslt has already started, the timer Tslt is cleared and restarted (S41).
1). Next, the management timer Tslt causes the return data D1 returned from the terminal device whose terminal number in the group is m,
It is determined whether or not the start time Tsm of the slot for receiving the primary sum check code SS is reached (S4).
12). Here, the small letter m of the slot start time Tsm represents the terminal number within the group. The management timer Ts
When it is determined that lt is the start time Tsm of the slot (Y in S412), the reception enable state, that is, the receivable state is set (S413). On the other hand, when it is determined that the management timer Tslt is less than the slot start time Tsm, the management timer Tslt is
Wait until the slot start time Tsm is reached (S4
12 N). Further, until the management timer Tslt reaches the slot start time Tsm, the fire receiver RE becomes the first waiting field WF1 in which nothing is done to the terminal device. In the reception enabled state, the first
When the return data D1 is received from the terminal device within the predetermined time T1 (Y in S414, Y in S439), the data D1 is returned.
Is stored in the RAM 121 (S415). The first predetermined time T1 referred to here is the time from the slot start time Tsm to the slot start time Tsm + 1 of the terminal device having an intra-group terminal number one greater than the intra-group terminal number of the terminal device, that is, m + 1. . The management timer T is used to determine whether the first predetermined time T1 has been exceeded.
slt performs (S437). Next, when the secondary sum check code SS is received from the terminal device within the second predetermined time T2 (Y in S416, Y in S440), the SS is stored in the RAM 12
2 (S417). The second predetermined time T here
2 means the time from the slot start time Tsm to the slot end time Tem for the in-group terminal number m. The management timer Tslt also determines whether or not the second predetermined time T2 has been exceeded (S438). Further, next, in order to determine whether the transmission from the terminal device to the fire receiver RE is normally performed, a sum check is performed based on the secondary sum check code SS stored in the RAM 122.

That is, RAM 141 to RAM 144 and R
Address AD stored in AM121, command CM1, command CM2, primary sum check code P
S, read the returned data D1 (S418 to S422),
AD, CM1, CM2, primary sum check code PS,
The number of each active bit of the transmission byte of D1 is counted (S423), and the count value is added to obtain the added value (S424). Next, the added value is inverted to obtain an inverted value (S425). The most significant bit of this inverted value is deleted (S426) and the operation result, that is, the secondary operation code SC1 is obtained. This secondary operation code SC1 is RAM
It is determined whether or not it matches the secondary sum check code SS stored in 122 (S427). If the results of the sum checks match (Y in S427), the transmission was performed normally, so the process proceeds to S428, and when the point polling is the first time, the transmission abnormality detection variable fx is 0, so it remains as is. Prohibit reception (Y in S428, S42
9) At this point, the reading of data from the terminal device having the in-group terminal number m ends. Therefore, the data being received at this point is discarded. Then, next, m is incremented by 1 (S430), and the above S412 to S412 are repeated.
S429 is repeated to collect the return data D1 and the secondary sum check code SC1 from the terminal device with the terminal number m + 1 in the group. Then, the above S412 to S431 are repeated until the value of m becomes 10h, and when m exceeds 10h (N in S431), the process proceeds to S432. That is, m is 1
If it is determined that the time exceeds 0h, the collection of the return data D1 and the secondary sum check code SS from all 16 terminal devices in the group has been completed, and the process proceeds to S432.

In this way, the return data D1 from each terminal device belonging to one group is sequentially returned as the group information in the slots prepared for each terminal device and collected in the fire receiver RE.

In S439, if the return data D1 is not received from the terminal device whose address is x within the predetermined time Tsm + 1 (N in S439), the x
The no-response process is performed for the terminal device of No. (S441).
The no-response process here means incrementing the transmission abnormality detection variable fx by 1 for the terminal device whose address is x. When the transmission abnormality detection variable fx becomes 3, for example, the fire receiver Abnormality display (display indicating that transmission is abnormal) is displayed on the display portion DP of the RE. Here, the variable fx indicating the number of transmission error detections is stored in the RAM 16 for each address.

In S440, the predetermined time T
Even when the secondary sum check code SS is not received in the em from the above-mentioned terminal device No. x, the process proceeds to S441 (S44
0), when the transmission abnormality detection variable fx is incremented by 1 and the transmission abnormality detection variable fx becomes 3,
An abnormality display (display indicating that transmission is abnormal) is displayed on the display portion DP of the fire receiver RE. The transmission abnormality detection variable fx is stored in the RAM 16 for each address in the same manner as described above. Further, in S427, the secondary operation code SC
When 1 does not match the secondary sum check code SS, that is, when the result of the sum check does not match (S4
27, N), and an erroneous response process is performed (S442). In the erroneous response process here as well, when the transmission abnormality detection variable fx is incremented by 1 and the transmission abnormality detection variable fx becomes 3 as in the case of the non-response process, the display portion DP of the fire receiver RE is displayed. Abnormality display (display indicating that transmission is abnormal) is performed. The fx is stored in the RAM 16 for each address.

In step S428, if the point polling is the second time or later, the transmission abnormality detection variable fx is 0.
Whether or not, that is, whether or not the terminal device receiving data up to the previous time has performed no response processing or erroneous response processing in the point polling up to the previous time, that is, fx stored in the RAM 16 for each address is 0. It is determined whether or not there is. In the previous time, if such an abnormality is not detected, that is, if it is determined that fx is 0 (Y in S428), the reception prohibited state is set (S429). On the other hand, when such an abnormality is detected, that is, when it is determined that fx is not 0 (N in S424), the variable fx is reset to 0 (S443). Therefore, unless the transmission abnormality detection such as no-response processing or erroneous response processing is performed three times in succession, the abnormality display (display as transmission abnormality) is not displayed.
Here, similarly to the above, the transmission abnormality detection variable fx that has become 0 is stored in the RAM 16 for each address.

As a result, even if a transmission error such as a no-response process or an erroneous response process occurs during execution of point polling, point polling can be continued without interruption.

The operation of the "transmitter detection frame", that is, the operations of S432 to S438 will be described below.

Next, in the microprocessor MPU1, the management timer Tslt is set to the transmitter slot start time T.
It is determined whether or not it is p (S432). When it is determined that the management timer Tslt has reached the transmitter slot start time Tp (Y in S432), the "transmitter detection frame" is started and the reception enabled state, that is,
After setting to the receivable state (S433), the transmitter calling pulse PC is transmitted from the signal transmitting / receiving unit TRX1 (S43).
4). The transmitter calling pulse PC also serves as the start bit of the return signal from the transmitter. Further, the transmitter calling pulse PC is a calling pulse for not only the transmitters in the group but also the transmitters belonging to all the groups. Therefore, the fire receiver RE can collect the address ADp of the transmitter P that is in the alarming state and belongs to all groups. Next, when the address ADp of the transmitter P is received from the transmitter P that is issuing the alarm within the third predetermined time T3 (S
(Y of 435, Y of S444), the address ADp is stored in the RAM 15 (S436), the fact that the transmitter P has issued a notification is displayed on the fire receiver RE together with the address of the transmitter P (S437), and the group designation is performed. The code CM2 is incremented by 1 and stored in the RAM 143 (S438).
At this time, the memory of the old CM 2 is erased.
The third predetermined time T3 referred to here is the time from the transmitter slot start time Tp to the transmitter slot end time Tep. The management timer Tslt also determines whether or not the third predetermined time T3 has been exceeded.

On the other hand, when it is determined in S444 that the management timer Tslt is less than the transmitter slot end time Tep, the process waits until Tslt reaches the time Tep (N in S435).

Further, in S435, when the fire receiver RE does not receive the address ADp of the transmitter P from the transmitter P that is currently issuing the alarm until the third predetermined time T3 (S4).
35 N, N 444 N), the group designation code CM2 is incremented by 1 and stored in the RAM 143 in the same manner as described above (S438). At this time, the memory for the old group designation code CM2 is erased.

When the group designation code is the final group number in S438, the process returns to the first group number.

In this way, the address ADp of the transmitter P that is in the alarming state belonging to all the groups is returned as the alarm transmitter address information during the transmitter slot and collected in the fire receiver RE. Then, in step S438, the group designation code CM2 is incremented by 1, and after the fire receiver RE has passed the second waiting field WF2 (not shown) in which nothing is done to the terminal device, the microprocessor MPU1 executes the process shown in FIG. If there is no selecting command and system polling command (N in S2, N in S3), point polling including the "group information collection frame" for the group number 1 is performed.

Incidentally, the above-mentioned second weighting field W
F2 is a byte of transmission for reducing processing of the terminal device so that redundancy in signal transmission due to variations in return time of the return data D1 and the secondary sum check code SS returned from each terminal device can be provided. This is for synchronizing the frames.

Then, the group numbers 2, 3 ,. . .
After the point polling consisting of the “group information collection frame” and the “transmitter detection frame” for 15 is completed, although not shown in the figure, a status information return command (CM1
= 01h) instead of the type information ID return command (CM1
= 00h) is sent from the fire receiver RE together with AD and CM2, so that the group numbers 0, 1, 2,
3,. . . , 15 for collecting the type information ID for the group information collection frame and the transmitter detection frame for point polling. At this time,
The point polling is basically the same as the point polling including the "group information collection frame" for collecting the state information except that the return data D1 is the type information ID instead of the state information. Then, after this point polling is completed, the point polling and the type information I consisting of a "group information collection frame" for collecting status information and a "transmitter detection frame" are described below.
Point polling consisting of a "group information collection frame" for collecting D and a "transmitter detection frame" is alternately repeated.

In the above embodiment, the transmission frame length management timer Tf is provided in the fire receiver RE, is started prior to S2, and the operation up to S438 before the timer overflows, or If the 2-weighting field WF2 does not end, the point polling in the group for which point polling is being performed is forcibly ended, and the group designation code CM
The point polling may be started for the next group by incrementing 2 by 1.

Through the above operation, the group G
The state information of each terminal device belonging to 0 to G15 is collected for each group, and at the same time, it is possible to collect the addresses of the transmitters that are in the alarming group belonging to all the groups by one point polling. Then, based on these collected data, the fire receiver RE can detect the terminal device that has detected an abnormality or the like.

In the above description of the operation, point polling consisting of a "group information collection frame" for collecting status information and a "transmitter detection frame" and a "group information collection frame" for collecting type information ID and a "transmission" The point polling consisting of the "machine detection frame" and the point polling consisting of "group information collection frame" for collecting status information and "transmitter detection frame" Collect the type information ID only when the operator inputs to the fire receiver RE an instruction to perform point polling consisting of a "group information collection frame" for collecting the type information ID from the OP and a "transmitter detection frame" Point polling consisting of "Group information collection frame" and "Transmitter detection frame" Then, the type information IDs of all the terminal devices are collected, and then the routine returns to the routine for point polling, which is composed of the "group information collection frame" for collecting the state information and the "transmitter detection frame". Good. Further, in the "point polling" for collecting the type information ID, the transmitter detection frame may be omitted.

FIG. 13 is a flow chart showing a specific example in the case where the operator inputs a command for performing system polling from the operation unit OP in FIG. 9 to the fire receiver RE (S5).

In S5, if there is an input command from the operation unit OP, the RAM 171 is used for system polling.
And AD and CM1 are stored in the RAM 172 (S50
1, S502), the number of active bits of each transmission byte of the AD and the CM1 is counted (S503) to obtain a count value, and the count value is added to obtain an addition value (S504). Next, the added value is inverted to obtain an inverted value (S505). The most significant bit of this inverted value is deleted to obtain the primary sum check code PS (S50
6). This primary sum check code PS is stored in the RAM 173.
(S507). And RAM171-R
The AD, the CM1, and the primary sum check code PS stored in the AM 173 are sequentially transmitted from the signal transmitting / receiving unit TRX1 (S508) to prevent the AD, the CM1, and the primary sum check code PS from being retransmitted. It is erased from the RAM 17 (S509). And it returns to S2 of FIG.

In this embodiment, the AD, CM1, and the primary sum check code PS are sent from the fire receiver RE, but no response is made from the terminal device.
A response signal D1 notifying that the command sent from the fire receiver RE has been received, and a secondary sum check code SS for confirming whether or not the transmission from the terminal device to the fire receiver RE is normally performed. May be transmitted from the terminal device to the fire receiver RE as in the case of the point polling shown in FIGS.

In FIG. 14 and FIG. 15, the operator issues a command to select from the operation unit OP to the fire receiver R.
It is a flow chart which shows a concrete example when inputting in E (S6).

In S6, when there is an input command from the operation section OP, the address AD and the command CM1 in the selecting are read to the RAM 181 and the RAM 182 (S601 and S602), and the AD and the CM concerned.
The number of each active bit of one transmission byte is counted (S603), and the count value is added to obtain an added value (S604). Next, the added value is inverted to obtain an inverted value (S605). The most significant bit of this inverted value is deleted to obtain the primary sum check code PS (S6
06). The primary sum check code PS is stored in the RAM 18
3 (S607). And RAM181-R
Address AD and command C stored in AM183
M1, primary sum check code PS, signal transmission / reception unit TR
The data is sequentially transmitted from X1 (S608). Next, the management timer Tslt is started (S609), and next,
Whether the management timer Tslt is the start time T4 of the slot for receiving the self-address DA of the terminal device returned from the terminal device whose terminal number in the group is m, the return data Da, and the secondary sum check code SS It is determined whether or not (S610). When it is determined that the management timer Tslt is the start time T4 of the slot (Y in S610), the reception enable state, that is, the receivable state is set (S611). On the other hand, the management timer Ts
When it is determined that the slot start time T4 is not reached, the management timer Tslt waits until the slot start time T4 is reached (N in S612). Further, until the management timer Tslt reaches the slot start time T4, the fire receiver RE becomes the first waiting field WF1 in which nothing is done to the terminal device. When the self-address DA is received from the terminal device within the predetermined time T5 (Y in S612, N in S629), DA is set to R.
It is stored in the AM 191 (S613). The management timer Tslt is used to determine whether the predetermined time T5 has been exceeded.
Do. Next, when the return data Da is received from the terminal device within the predetermined time T6 (Y in S614, N in S630),
Da is stored in the RAM 192 (S615). Whether or not the predetermined time T6 has been exceeded is also determined by the management timer Ts.
It does. Next, when the secondary sum check code SS is received from the terminal device within the predetermined time T7 (S616).
No, S631, N) and SS are stored in the RAM 193 (S617). The management timer Tslt also determines whether or not the predetermined time T7 has been exceeded.

Next, the fire receiver R is sent from the terminal device.
To determine whether the transmission to E was successful,
Secondary sum check code SS stored in RAM 193
Sum check based on.

That is, the RAMs 181 to 183, RA
Address AD, command CM1, primary sum check code P stored in M191 and RAM192, respectively.
S, self address DA, and return data Da are read (S6
18 to S622), the number of each active bit of the transmission byte of the address AD, the command CM1, the primary sum check code PS, the self address DA, and the return data Da is counted (S623), each count value is obtained, and this count value is added. By doing so, an additional value is obtained (S624). Next, the added value is inverted to obtain an inverted value (S625).
The most significant bit of this inversion value is deleted (S626), and the result of the operation, that is, the secondary operation code SC2 is obtained. And
It is determined whether the secondary operation code SC2 matches the secondary sum check code SS stored in the RAM 193 (S627).

If the results of the sum checks match, the transmission was performed normally (Y in S627), the reception is prohibited (S628), and the process returns to S2 in FIG.

In S612, the predetermined time T
If the self-address DA is not received from the terminal device within 5 (S629: Y), no response process is performed, that is, an abnormal display (display of no response) is displayed on the display unit DP of the fire receiver RE. Done.

Furthermore, if the return data Da is not received from the terminal device within the predetermined time T6 in S630, or if the secondary sum check code SS is not received from the terminal device within the predetermined time T7 in S631. , S632 (Y in S630, Y in S631), no response process is performed, that is, an abnormal display (display indicating that transmission is abnormal) is performed on the display portion DP of the fire receiver RE.

Further, in S627, if the secondary operation code SC2 does not match the secondary sum check code SS, that is, if the result of the sum check does not match (N in S627), an erroneous response process, that is, An abnormality display (display indicating that transmission is abnormal) is displayed on the display portion DP of the fire receiver RE.

FIG. 16 is a diagram showing a main flowchart of the repeater RP as an example of the terminal device in the above embodiment.

First, initial setting is performed (U1), and the return timing, that is, the information return start time Tdm is calculated from the own terminal number within the group (U2). When there is a received signal (Y in U3), AD, CM1, CM2, and PS are stored in the RAMs 341 to 344, respectively (U4 to U).
7).

Next, AD of RAM 341 and RAM 342
CM1 of CM, CM2 of RAM343, PS of RAM344
Count the number of active bits in each transmission byte of (U
8) Obtain each count value, and add the count values to obtain an added value (U9). Next, the added value is inverted to obtain an inverted value (U10). The most significant bit of this inverted value is deleted to obtain the primary operation code SC3 (U1
1). It is determined whether or not the primary operation code SC3 and the primary sum check code PS match (U12). If the results of the sum check of the received signals match, it means that the transmission was performed normally (Y in U12).
It is determined whether the content of D is a point polling instruction (U13), and if it is a point polling instruction, it is determined whether the content of CM1 is a point processing instruction (U14). If the instruction is a point processing instruction (CM1 = 0Xh), point processing is performed (U1
5).

When it is determined in U13 that the command is not a point polling command (AD ≠ FF), (U1
3 N), a selecting process is performed.

On the other hand, when it is determined in U14 that the instruction of CM1 is not the point processing instruction (CM1 ≠ 0X
In h) (N of U14), system processing is performed (U1).
6).

When there is no received signal in U3 (N of U3), the state information is collected (U18) and the obtained state information is stored in the RAM 32. At this time, the RAM 22 stores, for example, the data for the last five times, and the oldest state information among them is erased (U19, U20).

Here, the status information is collected by detecting the presence or absence of a fire signal or a gas leak signal when the on / off type fire detector F or the gas leak detector G is connected to the repeater. In addition, when the fire door D is connected, the repeater detects an open state signal indicating an open state and a closed state signal indicating a closed state, and when the district bell B is connected. This is performed by the repeater detecting a ringing state signal indicating a ringing state. The above operation is the same for the fire detectors such as the photoelectric fire detector S and the transmitter P.

Also, the operation is basically the same as the above except that the step of U6 is not performed even when CM2 is not sent from the fire receiver RE such as system polling and selecting.

FIG. 17 is a flow chart showing the operation of the point processing of the repeater RP.

Here, the microprocessor MPU3 is
Determine whether the group to which it belongs has been called (U1
01). When it is determined that the own group number and the high-order digit of CM2 match (Y of U101), it is determined that the group to which the user belongs belongs is designated and the status information of the user is returned to the fire receiver RE. Therefore, the following operations are performed.

That is, in order to determine the content of the point processing, it is determined whether or not the received command CM1 is a status information return command (U102), and if it is a status information return command, RA
The current status information is read from M32, and this status information is stored in the RAM 351 as return data D1 (U10).
3). Then, the return timing management timer Td is started (U104). If the timer Td is already activated in U104, the timer Td is cleared and reset to restart.

Next, the timer Td sets the information return start time Td.
It is determined whether or not it is m (U105). Here, the small letter m of the information return start time Tdm slot indicates the terminal number within the group. When the timer Td has reached the information return start time Tdm (Y in U105), R
The AD, CM1, CM2, PS, and D1 respectively stored in the AM 341 to RAM 343 and the RAM 351 are read (U106 to U110), and the AD, CM1, and CM are read.
The number of each active bit of the transmission bytes of 2, PS, and D1 is counted (U111), and the added value is obtained by adding the count values (U112). Next, the added value is inverted to obtain an inverted value (U113). The most significant binni next sum check code SS of this inverted value is used (U1
14). Then, the return data D1 and the secondary sum check code SS stored in the RAM 351 and RAM 352.
And are sequentially transmitted from the signal transmitting / receiving unit TRX1 (U11
5).

On the other hand, in U101, the microprocessor M
When PU3 determines that its own group number and the upper digit of CM2 do not match (N of U101), it determines that it does not specify the group to which it belongs, proceeds to return, and does not perform point processing. On the other hand, U102
If the received signal is not a status information return command (CM1 ≠ 01h), that is, a type information ID return command (CM1)
= 02h) (N of U102), ROM3
The self-type information ID stored in 2 is read out, and R
It is stored in the AM 351. Then, hereinafter, U104 to U1
Step 13 is executed. The basic operation of U104 to U113 is the same as the above case except that the own type information ID is returned as the return data D1 instead of the state information and is sent to the fire receiver RE.

Further, when it is determined in U105 that the timer Td has not reached the information return start time Tdm (N in U105), the process waits until the information return start time Tdm.

In U102 to U105, the fire receiver RE side is the first waiting field WF1 in which nothing is done to the terminal device (S41).
2) Therefore, the repeater RP can analyze the data of the fire signal and the like obtained from the on / off type fire detector F or the like connected thereto under favorable conditions.

In the above embodiment, the point processing of the repeater RP is shown as an example of the terminal device, but this is the case where the terminal device is a fire detector such as another photoelectric fire detector or a thermal fire detector. However, it is basically the same. That is, for example, in the case of the photoelectric fire detector S, the collection of the status information is performed by the light emitting diode L connected to the light emitting circuit LDC by the generation of the clock pulse from the clock.
D basically emits light, and the photodiode PD connected to the light receiving circuit PDC basically receives light emitted from the emitted light scattered by smoke and detects the smoke density. It is similar to the repeater RP.

Further, in the above, the information return start time T
dm is the terminal number m within its own group in U2 above.
The information return start time Tdm is set to be delayed as the in-group terminal number m of each terminal device increases, that is, the terminal device located farther from the fire receiver RE. In order to calculate the information return start time Tdm, for example, a table of the terminal number m within the group and the information return information is stored in a predetermined ROM of the terminal device, and the corresponding information return from the terminal number m within the own group is returned. Try to find the start time. The information return start time Tdm is the same as the start time of the slot for the in-group terminal number m generated by the fire receiver RE. Thereby, the status information of each terminal device is sequentially returned to each slot provided corresponding to each terminal device in the fire receiver RE.

18 and 19 are flowcharts showing the operation of the point processing of the transmitter P as an example of the terminal device in the above embodiment.

First, initial setting is carried out (U201), and FIG.
A response to the group information collection frame of U101 to U115 shown in 7 is executed (U202). Next, within a predetermined time T1a (Y of U217), each transmitter P determines whether or not it is issuing an alarm based on whether or not the push button SW is pressed (U203). That is, the predetermined time T1a
If the push button SW is pressed inside and it is determined that the alarm is being issued (Y in U203, N in U217), the process returns and U
Proceed to 204. On the other hand, when it is determined that the push button SW is not pressed even after the predetermined time T1a has passed and no alarm is issued (N in U203, Y in U217), the process waits as it is. The predetermined time T1a is the RAM 41 for the work area.
It is determined whether or not the timer has been passed by. Also, this timer starts with the above initial settings,
If it has already started at the time of the initial setting, a reset is performed to clear and restart at the time of the setting. The same applies to the following predetermined times T2a and T3a. Next, when each transmitter P detects the transmitter slot generated by the fire receiver RE within the predetermined time T2a (Y in U204, N in U218), the process proceeds to S205.
On the other hand, if each transmitter P does not detect a transmitter slot (N in U204, Y in U218), the process returns. Here, the transmitter slot is detected by the transmitter P determining that all the slots for data return in the group information collection frame have been completed.

When proceeding to U205, b is set to 7, and the procedure proceeds to U206. Here, b is a transmission bit number counter, and b is represented by a decimal number. And "A
D. "b" indicates the number of bits of the address of the transmitter P, which is higher by b from the lowermost, that is, the bit which is higher by b from the lowermost. Therefore, for example, when b = 0, “AD.b” indicates the least significant bit, and when b = 7, “AD.b” indicates the most significant bit. As mentioned above, the address of each transmitter P is represented by a binary number represented by 8 bits.

In U206, the transmitter P is the fire receiver R
When the transmitter call pulse sent from E is detected within the predetermined time T3a (Y in U205), the bit timer Tb
Is activated (U207). Although not shown here, it is determined whether or not the own address has been transmitted in the previous point polling, and if it has been transmitted, the process proceeds to return. This is so that the fire receiver RE can sequentially detect the transmitters issuing the alarms by repeating the point polling in the descending order of the address. After that, when it is determined that the timer Tb has passed the predetermined time (Y in U208), the process proceeds to U209.
If it is determined that the timer Tb has not passed the predetermined time (N in U208), the process waits as it is. The predetermined time mentioned here is the time corresponding to the width of the calling pulse of the transmitter. This is to prevent the transmitter call pulse from the fire receiver RE and the address transmission signal from the transmitter P from overlapping. Therefore, in this case, the predetermined time is, for example, 1
A time corresponding to a bit, that is, 1/2400 seconds is adopted. On the other hand, in U206, each transmitter P has a fire receiver R.
When the transmitter detection pulse sent from E is not detected within the predetermined time T3a (N in U206, Y in U219), the process returns.

Address U of transmitter P in U209
Bits higher than the least significant bit of Dp are transmitted, timer Tb is activated again, and the process proceeds to U210.
The address ADp is stored in the RAM 44.

Then, in U210, the transmitter P
If the bit of the address ADp sent from the uppermost bit by b is 0 (Y of U210, U2
11 N), the state of the signal line is 0 or 1 is monitored and determined over a predetermined time (U214). That is, the transmitter P monitors and determines for a predetermined time whether the bit of the address sent from the other transmitters P is 0 or 1 from the least significant bit b.
Here, when the above-mentioned predetermined time has passed (N in U214, Y in U215) while the state of the signal line remains 0, the value of b is decremented by 1 (U212), and the process proceeds to U213. On the other hand, when the state of the signal line becomes 1 within the predetermined time, that is, when the transmitter P having an address larger than itself is transmitting, it is determined that another transmitter P is transmitting the address ( Proceed to U214 Y) and U216. It should be noted that the predetermined time referred to here is, for example, 1/2400 seconds, which is the time of one bit width of the address transmission signal from the transmitter P. This is to sequentially compare the numbers of each binary digit represented by 8 bits, which are transmitted from each transmitter P as an address.

Here, in the case of proceeding to U216, the transmission of the transmitter address from the transmitter P is forcibly ended.

In U210, the transmitter P
If the most significant bit of the address sent from is the most significant bit by b (N in U210), wait a predetermined time until the timer Tb overflows (U211), b
The value of is decremented by 1 (U212), and the process proceeds to U213. Here, the reason why the waiting time is provided is that one bit of the address transmission signal from the transmitter P does not overlap with one bit of the address transmission signal transmitted next from the same transmitter P. That's why.

When U213 is entered, b is 0.
It is determined whether or not this is the case. Here, if b is 0 or more (Y of U213), all the bits of each position of the address ADp of the transmitter P have not been transmitted, so the process returns to U209.
The routine of U209 to U213 is repeated. On the other hand, when b is less than 0 (N in U213), all the bits of each position of the address ADp of the transmitter P have been transmitted, so the transmission ends.

Therefore, by repeating the routine of U209 to U213, the address AD of the transmitter P is
Each bit of p is sequentially transmitted from the higher order, and the transmitter P compares the transmission data with the reception data bit by bit, and the transmitter P receives the active level even though it transmits the inactive level. Stops transmitting, and finally the fire receiver RE can obtain the address of only one transmitter P as the alarm transmitter address information. As described in the description of the group information collection frame, 1
One transmitter P may send a check code after ending the sending of the address of its own transmitter P so that the fire receiver RE can confirm whether or not the transmission is normally performed. .

Although the number of terminal devices in one group is 16 in the above embodiment, the number may be other than 16 and the number of groups is 16. However, the number of terminals is divided into groups other than 16. May be.

In addition, when assigning an address to each terminal device, a two-digit number is used and expressed as described above. In addition, the lower digit is the group number and the upper digit is the terminal number within each group. It may be displayed by using a 2-digit hexadecimal number, and if all terminal devices can be identified,
It is not limited to digits, but an address that is displayed in multiple digits is assigned to each of multiple terminal devices, and the group number is displayed in several digits in the address, and the terminal number in each group is displayed in the remaining digits. Good.

In the above-described embodiment, when a plurality of transmitters issue a report, the magnitudes of the respective numbers of the addresses represented as 8-bit binary numbers of the respective issuers are compared from the highest. By doing so, the maximum address among the addresses of the issued transmitters is preferentially transmitted to the fire transmitter RE, but the transmitter P sequentially transmits its own address from the lower bits. , The priority of the address of one of the reported transmitters is compared by comparing the magnitude of each digit of the address expressed as an 8-bit binary number of each reported transmitter from the lowest. Alternatively, it may be sent to the fire receiver RE.

FIG. 20 is a flowchart showing the operation of the system process (U16) of the relay RP as an example of the terminal device in the above embodiment.

When entering the system process (U16), the AD, CM1, and PS stored in the RAM 341, RAM 342, and RAM 344 are loaded into the RAM 361 and R, respectively.
Transfer to AM362 and RAM363.

First, it is determined whether or not the command CM1 received by the microprocessor MPU3 is a fire restoration command (U301). If the command CM1 is a fire restoration command (Y of U301), the fire signal reception circuit FSR, the district The sound control circuit LAC and the like are restored and the process returns. On the other hand, if it is not a fire recovery command (N of U301), it is judged whether or not the command CM1 is a storage recovery command (U303), and if it is a storage recovery command (U303).
Y), the fire signal receiving circuit FSR is restored (U30
4) Return. On the other hand, if it is not the storage restoration command (N of U303), it is judged whether or not the command CM1 is the district sound stop command (U305), and if it is the district sound stop command (Y of S305), The local sound control circuit LAC is turned off (U306), and the process returns. On the other hand, if it is not the district sound stop command (S30
5N), it is judged whether or not it is the emergency broadcast stop command (U307), and if it is the emergency broadcast stop command (S307).
(Y of 307), the emergency broadcast control circuit BAC is turned off (U308), and the process returns. On the other hand, if it is not the emergency broadcast stop command (N in S308), the process directly returns.

Although the system polling for the repeater RP has been described in the present embodiment, the fire detector such as the photoelectric fire detector S is not controlled by the district sound stop command and the emergency broadcast stop command. In the case of the transmitter P, the repeater R is used except that it is not controlled by the storage restoration command, the district sound stop command and the emergency broadcast stop command.
It is basically the same as the case of the system polling for P.

21 and 22 are flowcharts showing the specific operation of the selecting process (U17) of the relay RP as an example of the terminal device in the above embodiment. When entering the selecting process (U17), the AD, CM1, and PS stored in the RAM 341, RAM 342, and RAM 344 are stored in the RAM 371 and R, respectively.
Move to AM372, RAM373.

First, here, the microprocessor MPU
3 is the own address of the repeater RP and the received address AD
It is determined whether and match (U401). When it is determined that the self address and the received address AD match (Y of U401), it is determined that the repeater RP is designated, and the status information of the self is given to the fire receiver R.
The following operations are performed in order to send the data back to E.

That is, in order to determine the contents of the selecting process, the received signal is a type information ID return command (CM =
00h) (U402), and if it is a type information ID return command (Y of U402), the type information ID and its own address are read from the ROM 32, and the RAM 3
It stores in 82 (U403). And the RAM 371,
RAM372, RAM373, RAM381, RAM3
Address AD and command CM respectively stored in 82
1, primary sum check code PS, own address D
A, return data Da is read (U415 to U41
9), the address AD, command CM1, primary sum check code PS, own address DA, return data D
The number of each active bit of the transmission byte of a is counted (U420) to obtain a count value, and the count value is added to obtain an addition value (U421). Next, the added value is inverted to obtain an inverted value (U422). By deleting the most significant bit of this inverted value, the secondary sum check code S
S is obtained (U423). This secondary thumb check code S
The S is stored in the RAM 383 (U424). And R
The own address DA, the return data Da, and the secondary sum check code SS stored in the AM 381, the RAM 382, and the RAM 383 are sequentially output from the signal transmitting / receiving unit TRX3.
It is sent (U424). On the other hand, when U402 determines that the signal received by the microprocessor MPU3 is not the type information ID return command (N of U402), it is determined whether the received signal is the state information return command (CM1 = 01h). It is determined (U404) and the status information return command (CM1
(01h), the status information is read from the RAM 32 and stored in the RAM 382. At the same time, although not shown, its own address is read from the ROM 32 and stored in the RAM 382 (U405). Then, U415 to U424 are executed thereafter. It should be noted that instead of the own type information ID, the state information is returned to the data Da.
U41 except that it is sent to the fire receiver RE.
The basic operation of 5 to U424 is similar to the above case.

On the other hand, in U404, it is judged whether or not the command CM1 received by the microprocessor MPU3 is a fire recovery command (U406). If the command CM1 is a fire recovery command (Y in U406), a fire signal is received. Circuit F
Restore the SR, district sound control circuit LAC, etc., and proceed to U415. On the other hand, if the command is not a fire recovery command (N in U406), it is determined whether the command CM1 is a storage recovery command (U408), and if it is a storage recovery command (Y in S408), a fire signal is issued. The receiving circuit FSR is restored (U409), and the process proceeds to U415. On the other hand, if it is not the storage recovery command (N of S408), the command C concerned
It is determined whether or not M1 is a district sound stop command (U410), and if it is a district sound stop command (U4).
10 Y), turn off the district sound control circuit LAC (U
411), and proceed to U415. On the other hand, if it is not the district sound stop command (N of U410), it is determined whether it is the emergency broadcast stop command (U412), and if it is the emergency broadcast stop command (Y of U412), emergency broadcast control The circuit BAC is turned off (U413), and the process proceeds to U415. On the other hand, if it is not the emergency broadcast stop command (N in U412), the process directly returns.

In the point polling of the above embodiment, the CM 1 discriminates whether the status information or the type information ID is returned among various data.
Although the group is designated by 2, the CM 2 conversely distinguishes whether the status information or the type information ID is returned among various data, and the group is designated by the CM 1. May be.

Further, although the command CM2 is not used in the system polling and selecting in the above-mentioned embodiment, for example, the confirmation light extinguishing command for extinguishing the confirmation light of the fire detector from the fire receiver RE is issued to the terminal. When sending to the device, the command CM1 may be sent as a command for controlling the confirmation light, and the command CM2 may be sent as a command to turn off the light together with the address AD and the primary sum check code PS.

Furthermore, in the present embodiment, the repeater RP
However, in the case of fire detectors such as photoelectric fire detector S, it is not controlled by the district sound stop command and emergency broadcast stop command.
The case is basically the same as the case of selecting the repeater RP except that it is not controlled by the storage restoration command, the district sound stop command and the emergency broadcast stop command.

Further, in the point polling of this embodiment, when the return data D1 and the secondary sum check code SS are sequentially received from one terminal device from one group, the slot for receiving the status information or the type information ID is selected. The width is made wider as the terminal number m in the group becomes larger. For example, in FIG. 23, group number 1
The slot width when point polling is performed for the group
The slot width is set so that the slot width becomes wider as = 10h. This is a fire receiver RE
, MPU2, MPU used for terminals and terminal devices
3. The frequency of the oscillator of MPU4 is not always the value itself specified in the product, and the error is generally 1
% Is included. In this way, by making each of the above slots wider, the return data D1 and the secondary sum check code SS sent and received by the fire receiver RE and each terminal device due to the error in the frequency of each oscillator are exchanged. Timing deviation can be absorbed.

Furthermore, when the system processing or the selecting processing is started, the RAM 341, the RAM 34
2. The AD, CM1, and PS of the RAM 344 were moved to another RAM, but the RAM 34 was not moved.
1, contents of RAM 342, RAM 344 (AD, CM
1, PS) may be used as they are in the system process or the selecting process.

In this embodiment, whether or not the transmission is normally performed is determined by the sum check method as described above. However, each AD, CM1, CM2 and the primary addition in which these are simply added are performed. The terminal device that has transmitted the code PS and called by polling receives the received AD, CM1,
CM2 is simply added, and depending on whether the addition result (first addition code) matches the primary addition code PS,
The terminal device can recognize whether or not the signal received from the fire receiver is normal, and on the other hand, this terminal device sends back data D1 and the like to be returned to the fire receiver and AD, CM1, CM2 received from the fire receiver RE. The primary addition code PS is simply added to create the secondary addition code SS, and the fire receiver RE
Compares the second addition code obtained by simply adding the return data D1 etc. received from the terminal device with the AD, CM1, CM2, PS returned to the terminal device, and the secondary addition code SS received from the terminal device. By doing so, the fire receiver may be able to recognize that the terminal device has normally received the address code and the instruction code sent from the fire receiver.

Further, in the above embodiment, the transmission abnormality is detected in the point polling, but the transmission abnormality may be similarly detected not only in the point polling but also in the system polling and selecting. .

[0147]

[Effect] The present invention stores the number of transmission abnormality detections and detects the transmission abnormality when the number of detections exceeds a predetermined number, so that a false alarm of the transmission abnormality is prevented and the transmission abnormality is displayed reliably. You can

Further, according to the present invention, polling can be continued even if a transmission abnormality occurs, so that status information and the like can be quickly collected from the terminal device.

[Brief description of drawings]

FIG. 1 is a system diagram of disaster prevention equipment to which the above embodiment is applied.

FIG. 2 is an example of an 8-bit code indicating an address.

FIG. 3 is a time chart showing an embodiment of the present invention.

FIG. 4 shows a time chart when three transmitters operate in the above embodiment of the present invention.

FIG. 5 is a block diagram showing an example of a fire receiver RE in the embodiment.

FIG. 6 is a block diagram showing a photoelectric fire detector S as an example of the terminal device in the embodiment.

FIG. 7 is a block diagram showing a relay device RP as an example of the terminal device in the embodiment.

FIG. 8 is a block diagram showing a transmitter P as an example of a terminal device in the embodiment.

FIG. 9 is a system flowchart of the fire alarm receiver RE in the above embodiment.

FIG. 10 is a flowchart showing a specific operation of point polling in FIG.

FIG. 11 is a flowchart showing a specific operation of point polling in FIG.

FIG. 12 is a flowchart showing a specific operation of point polling in FIG.

FIG. 13 is a flowchart showing a specific operation of system polling in FIG.

FIG. 14 is a flowchart showing a specific operation of selecting in FIG.

FIG. 15 is a flowchart showing a specific operation of selecting in FIG.

FIG. 16 is a main flowchart of a repeater RP as an example of the terminal device in the above embodiment.

FIG. 17 is a flowchart showing a specific operation of point processing of the relay device RP in the above embodiment.

FIG. 18 is a flowchart showing a specific operation of point processing of the transmitter P in the above embodiment.

FIG. 19 is a flowchart showing a specific operation of point processing of the transmitter P in the above embodiment.

FIG. 20 is a flowchart showing a specific operation of system processing of the relay RP in the above embodiment.

FIG. 21 is a flowchart showing a specific operation of a selecting process of the relay device RP in the above embodiment.

FIG. 22 is a flowchart showing a specific operation of a selecting process of the repeater RP in the above embodiment.

FIG. 23 is a diagram showing a slot width.

[Explanation of symbols]

 RE Fire receiver as receiver S Analog type fire detector RP Repeater B District audio equipment (District bell) G Gas leak detector D Fire door as controlled device F On / off type fire detector P Transmitter PC transmitter Ringing pulse

Claims (2)

[Claims] 1. In a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter or a controlled device is connected to a receiver, the transmission error is detected when the terminal device has a transmission error. It has a detection means for detecting, a storage means for storing the number of times of transmission abnormality detection, and a display means for displaying the occurrence of transmission abnormality when the number of detection times stored in the storage means exceeds a predetermined number. Disaster prevention equipment. 2. In a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter or a controlled device is connected to a receiver, even if a transmission error occurs in the terminal device, polling is continued. Disaster prevention equipment characterized by doing.