JP3751677B2 - Disaster prevention equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, and a controlled device are connected to a receiving unit.
[0002]
[Prior art]
Conventionally, in disaster prevention facilities where multiple terminal devices such as fire detectors, repeaters, transmitters and controlled devices are connected to the fire receiver, an address is assigned to each terminal device, and the address from the fire receiver side is assigned. Accordingly, a polling method is used in which terminal devices are sequentially called, and only the called terminal device sends individual information about the terminal device such as a fire detection signal to the receiving unit. The fire receiver sequentially calls a number of terminal devices connected to a plurality of alarm lines using a data processing device built in the fire receiver, and information on the occurrence of fire from each terminal device. Collecting.
[0003]
[Problems to be solved by the invention]
Therefore, when such a polling method is used, it is necessary to increase the transmission speed of data transmitted on the alarm line in order to capture information from a large number of terminal devices within, for example, 5 seconds. It is necessary to use a large number of transmission lines, which is not economical.
[0004]
In order to solve this, an idling period is provided between call signals from the fire receiver to each terminal device, and the plurality of terminal devices are divided into groups, and an interrupt signal capable of identifying each group is provided as the interrupt signal. During the idling period, the fire receiver sends out to the terminal device, and when the fire receiver receives the interrupt signal, the fire receiver is configured to sequentially call the terminal devices of the group that sent out the interrupt signal in order. A polling scheme was invented.
[0005]
However, in such a polling method, an interrupt signal (for example, a group number) that can identify a group to which a terminal device that detects an abnormality belongs is sent to the fire receiver during the idling period, and then the terminal devices of the group are sequentially called. When there are many terminal devices in the group, there is still a problem that it takes time to detect the terminal device that detected the abnormality.
[0006]
An object of this invention is to provide the disaster prevention equipment which detects the terminal device which detected the abnormality rapidly, when there are many terminal devices in a group as mentioned above.
[0007]
[Means for Solving the Problems]
In the disaster prevention equipment in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, and a controlled device are connected to a fire receiver, the present invention groups the plurality of terminal devices into a plurality of groups, The fire receiver designates the group number sequentially for each group, and the terminal device calls the terminal of each terminal device in each group when its own group number matches the group number received from the fire receiver. For each time slot corresponding to a number, data such as status information or type information is sequentially returned to the fire receiver, and the time slot accepts information from each terminal device belonging to one group. After sending a polling signal to the group, before sending a polling signal to the next group, a plurality of time slots provided in sequence are Start time of Tsu bet is that slow enough to slot width increases.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a system diagram of an embodiment of a disaster prevention facility according to the present invention.
[0009]
In FIG. 1, an analog type that detects a fire phenomenon such as smoke, heat, flame light, gas or odor, and outputs a physical quantity signal to a fire receiver RE via a pair of signal lines that also serve as a power line. Various terminal devices such as fire detector S (smoke type such as photoelectric type, dimming type, ionization type, thermal type, flame type, gas type, odor type etc.), transmitter P, repeater RP, etc. A plurality of units, for example, 255 units are connected. The relay RP is connected to an on / off type fire detector F, a fire door D, a district bell B, a gas leak detector G, and the like that output a fire signal when a predetermined level of fire phenomenon is detected. Here, addresses are given to these terminal devices in order of two-digit hexadecimal numbers for each individual terminal device from the side closer to the fire receiver RE. That is, addresses are assigned to the terminal devices such as 00h, 01h, 02h,..., FEh from the side closer to the fire receiver RE. Hexadecimal numbers are displayed by adding h after numbers or letters. However, the address is also displayed in decimal notation for convenience of explanation below.
[0010]
Further, the terminal devices at addresses 00h to FEh are divided into 16 groups of a plurality of groups G0 to G15 in order from the side closer to the fire receiver RE.
[0011]
Therefore, as shown in FIG. 1, the groups G0 to G14 each include 16 units, and the group G15 includes 15 types of terminal devices.
[0012]
By the way, in this embodiment, each of 255 terminal apparatuses is given a unique address different from 8 bits of 00h to FEh. 2 (1) and 2 (2) show codes composed of 8 bits of terminal devices 10 and 255 as an example of addresses. As shown in FIG. 2, each address of this terminal device is divided into upper 4 bits (hereinafter referred to as upper digits) and lower 4 bits (hereinafter referred to as lower digits). A terminal number in the group is represented by a lower digit. That is, in the case of a terminal device having an address of 10, since the upper digit of the address code is 0h of “0000”, the 0th group is selected, and the lower digit is Ah of “1001”. This indicates that the terminal is a terminal device, and the overall address is 10 by 0Ah, which is a combination of the upper and lower digits. Also, the terminal device with address 255 is the 15th terminal device in the 15th group because the upper digit is Fh with “1111” and the lower digit is Eh with the lower digit “1110”. This indicates that the address as a whole is No. 255 by FEh in which the upper digit and the lower digit are merged.
[0013]
Accordingly, in this embodiment, the entire address is indicated by the entire 8-bit code, and this address indicates the group number by the upper digit and the terminal number in the group by the lower digit (hereinafter referred to as the intra-group terminal number). I have to.
[0014]
In this way, an address displayed in 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, so the “group information collection frame” of “point polling” , As will be described later, terminal devices having a common group number indicated by the specific digit in the address can be simultaneously called by polling, and the called group numbers are common and the terminal numbers are different. By utilizing this, response timing can be assigned to each terminal device.
[0015]
As will be described in detail later, the fire receiver RE polls each terminal device in the point polling, system polling, and selecting modes, collects predetermined information from the predetermined terminal device, It is something to control.
Hereinafter, “polling” refers to point polling or system polling, and excludes selecting.
[0016]
As shown in FIG. 3, the “point polling” includes a “group information collection frame” and a “transmitter detection frame”.
[0017]
Explaining the “group information collection frame”, in this frame, instead of sequentially polling each of the terminal devices, 255 terminal devices are grouped into 16 groups as described above, and fire reception is performed. The machine RE makes a call for each group. Each terminal device belonging to the called group sequentially returns the requested data such as status information or type information ID to the fire receiver RE at the response timing assigned to each terminal device.
[0018]
Here, the state information means that when the terminal device is an analog fire detector, the physical quantity data of the detected fire phenomenon, and when the terminal device is the relay RP, the on / off fire detector F and the gas leak detector G are connected. When there is a fire signal or gas leak signal, when controlled devices such as fire door D or district bell B are connected, whether these devices are open or closed, whether they are operating, or whether they are ringing In the case of data or transmitter, it means data indicating whether or not the push button switch is being operated.
[0019]
The predetermined information collected in the “group information collection frame” is referred to as “group information”.
[0020]
The “transmitter detection frame” is a frame provided to collect operation information promptly because the transmitter P is artificially operated and its operation information is highly reliable. For this reason, as shown in FIG. 3, the transmitter detection frame, after the above “group information collection frame” is performed for one group, simultaneously calls all transmitters belonging to this disaster prevention facility, In response to the call, the transmitting transmitter returns its address to the fire receiver RE in the designated time slot. Hereinafter, the collected address in this “transmitter detection frame” is referred to as “reporting transmitter address information”. Further, when a plurality of transmitters P issue a report, in the case of this embodiment, the transmitter with the smallest address stops transmission, and only the one transmitter with the largest address returns. Details of this will be described later.
[0021]
In “system polling”, the fire receiver RE transmits a predetermined control command to the terminal device to control all the terminal devices. Here, as a control command that the fire receiver RE performs to a plurality of terminal devices at the time of the system polling, for example, a fire recovery command (analog fire detector S that has sent a fire signal, a terminal such as a relay RP, etc.) Accumulation operation for determining whether or not the fire condition continues for a predetermined time, command to restore the device, terminal device such as the repeater RP ringing the district bell B, etc. to normal monitoring status) In order to perform the operation, there are an instruction to restore the terminal device such as a fire detector or a repeater that has sent a fire signal), an area sound stop instruction (an instruction to stop the ringing bell B), and the like.
[0022]
In addition, “selecting” is a method for specifying an address to an arbitrary terminal device and transmitting a predetermined control command to control the terminal device, or requesting a status information or type information ID to an arbitrary terminal device. A command is transmitted, and status information or type information ID is collected from each terminal device.
[0023]
FIG. 3 is a time chart showing an embodiment of the present invention.
[0024]
The operation proceeds from the upper left to the upper right in FIG. 3, and from the right end, the operation proceeds to the left end of the next lower stage, and the processing proceeds sequentially as described above. In FIG. 3, the horizontal line indicates a transmission signal from the fire receiver RE, and the horizontal line indicates a transmission signal from the terminal device.
[0025]
First, the codes AD, CM1, CM2, PS sent from the fire receiver RE to the terminal device and the codes D1, SS, DA, Da sent from the terminal device to the fire receiver RE will be described.
[0026]
Here, the codes AD, CM1, CM2, PS, D1, SS, DA, and Da are each composed of, for example, a start bit, an 8-bit data area, and an end bit, for a total of 10 bits. Accordingly, when these are transmitted from the fire receiver RE to the terminal device or from the terminal device to the fire receiver RE in transmission, one bit is sequentially transmitted from the upper digit as a binary number represented by 10 bits. Sent out. In the following description, for convenience of explanation, a data area represented by 8 bits indicating the contents of the above-mentioned AD, CM1, CM2, PS, D1, DA, Da, and SS is represented by a 2-digit hexadecimal number.
[0027]
First, the fire receiver RE sends an AD as an address, CM1 and CM2 as commands, and PS as a primary sum check code to the terminal device. Here, the address AD is a 2-digit hexadecimal number from 00h to FFh, and in the case of 00h to FEh (that is, AD ≠ FFh), the terminal device provided in the disaster prevention equipment to be operated in the selection In the case of FFh, it indicates point polling or system polling (hereinafter referred to as a polling instruction). The command CM1 is also a 2-digit hexadecimal number, and indicates the contents when selecting (ie, AD ≠ FFh). For example, CM1 turns off the fire test command for 82h and 83h turns off the confirmation lamp of the fire detector. This means that the selection is for the confirmation lamp extinction control command and the like.
[0028]
When a polling instruction (AD = FFh) is performed, the command CM1 indicates the type of polling to be performed. That is, when CM1 is 0Xh, it indicates that point processing is performed, that is, a point processing command, and when it is FXh, it indicates that system processing is performed, that is, a system processing command. Here, X is a hexadecimal number from 0h to Fh. Further, in this case, the contents of the polling are shown. For example, when CM1 is 00h, it is point polling, a type information ID return command, 01h is point polling, status information return command, F0h is system polling, fire recovery command, and F1h It is system polling, an accumulation recovery command, F2h is system polling, a district sound stop command, and F3h is system polling, and indicates an emergency broadcast stop command. Next, the command CM2 is also a 2-digit hexadecimal number, and is not used in the case of selecting and system polling.
[0029]
In the case of point polling, the command CM2 indicates a group to which predetermined information is to be returned in the polling (that is, a group designation code in point polling) by a lower digit. For example, CM2 is represented by 0Xh. Here, X is a hexadecimal number from 0h to Fh. This X represents a group number to which predetermined information should be returned.
[0030]
Furthermore, the primary sum check code PS is a code used for the terminal device to check whether or not the transmission from the fire receiver RE has been normally performed, and is performed by predetermined calculation from the AD, CM1, and CM2. This will be described later in detail.
[0031]
On the other hand, in the case of point polling, each terminal device sends D1 as status information or type information ID and SS as a secondary sum check code to the fire receiver RE. In the case of selecting, its own address DA, Da as return data, and SS as a secondary sum check code are sent to the fire receiver RE. In the case of system polling, the terminal device returns nothing. Here, the return data Da is information indicating that the operation has been performed according to the control command when the control command such as the status information of the terminal device, the type information ID, or the fire recovery command is received.
[0032]
The secondary sum check code SS is a code used by the fire receiver RE to check whether or not the transmission from the terminal device has been normally performed. In the case of point polling, the AD, CM1, and CM2 are used. , PS, D1, and in the case of selecting, it is obtained from AD, CM1, CM2, PS, DA, Da by a predetermined calculation, which will be described in detail later.
[0033]
Hereinafter, an example of the operation will be described with reference to FIG.
[0034]
As shown in FIG. 3, the point polling is composed of a “group information collection frame” and a “transmitter detection frame”. Further, the group information collection frame includes a “receiver field” in which the receiver calls the terminal device, a “first waiting field WF1” in which no transmission is performed between the receiver and the terminal device, and the called terminal device. Consists of a “terminal device field” for signal transmission, and a “transmitter detection frame” is a “transmitter field” for signal transmission between the receiver and the transmitter, and between the receiver and the terminal device. The “second weighting field WF2” in which no signal transmission is performed.
[0035]
First, as shown in FIG. 3, “receiver field” in “group information collection frame”, which is one operation of point polling, is started at P0. That is, the fire receiver RE sends FFh as AD, 01h as CM1, 00h as CM2, and a predetermined PS.
[0036]
On the other hand, the terminal device belonging to each group that has received the command or the like receives the first weighting field WF1 when the group number indicated by the lower digit of its own address matches the group number received from the fire receiver RE. After completion, the return data D1 and the secondary sum check code SS are returned to the fire receiver RE.
[0037]
When each terminal device returns the requested data, the data is sequentially returned from the terminal device having a smaller terminal number at the response timing assigned to each of the 16 terminal devices of the group that received the call. To do.
[0038]
On the other hand, the fire receiver RE enters the terminal device field composed 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 number 0 is entered. The terminal devices 15 to 15 sequentially transmit 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 transmits the data transmitted from each terminal device. collect.
[0039]
When this terminal field ends, the “transmitter detection frame”, which is one operation of point polling, is started in the CP, and the fire receiver RE transmits a transmitter call pulse PC for calling only the transmitter P. When a push button of a certain transmitter is operated and is in a reporting state, the transmitter P transmits its own address ADp immediately after the receiver receives the transmitter call pulse. Here, since the transmitter call pulse PC also serves as a start bit from the transmitter, the return timing of the address ADp by the transmitter P represented by 8 bits can be synchronized. In this way, the fire receiver RE can obtain the address information of the transmitter that issued the alarm.
[0040]
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 point designated by the group of group number 0 Polling (point polling (G0)) ends.
[0041]
Then, the command CM2 for designating the group is incremented by 1, and in P1, “point polling” (point polling (G1)) performed by designating the group of group number 1 is started, and the above operation is repeated again. It is. Hereinafter, although not shown, P2, P3,. . . , P14, each group number 2h,. . . , Fh are designated and “point polling” is started, and the above operation is repeated.
[0042]
After the “point polling” specifying the group number Fh, although not shown, the point polling for collecting the type information ID is performed, and the fire receiver RE is FFh as AD, 00h as CM1, 01h and a predetermined PS are transmitted as CM2, and the type information ID is transmitted from each terminal device instead of the status information of each terminal device as return data D1 in the terminal device field. Except for the return data D1, basically the same operation as the point polling for collecting the state information is performed by designating the group having the group number 0h. Then, “point polling” is performed by sequentially designating groups with group numbers 0h to Fh, 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, “point polling” for collecting the state information is started as described above.
[0043]
Next, system polling will be described.
[0044]
In P16 of FIG. 3, for example, when an operator inputs an instruction to perform system polling for performing fire recovery from the operation unit OP of the fire receiver RE to the fire receiver RE, the fire receiver RE performs fire recovery. A polling command (AD = FFh), a fire recovery command (CM1 = F0h), and a primary sum check code PS are sequentially transmitted as commands indicating system polling.
[0045]
In this embodiment, in the case of system polling, the terminal device is not sent back to the fire receiver RE, but a response signal indicating that the command signal has been received may be sent back. Good.
[0046]
In addition, in the case of system polling that includes storage restoration, content acoustic stop control, or emergency broadcast stop control, etc., a fire restoration command (CM1 = F0h) is a system polling that covers the implementation of the above-mentioned fire restoration except that the restoration restoration command (CM1 = F1h), district sound stop command (CM1 = F2h), and emergency broadcast stop command (CM1 = F3h). And basically the same.
[0047]
Next, selecting will be described.
[0048]
In P17 of FIG. 3, for example, when an operator inputs an instruction to perform selection for turning off the confirmation lamp of the terminal device whose address is 12h from the operation unit OP of the fire receiver RE to the fire receiver RE. The receiver RE receives the address (AD = 12h) of the terminal device to be selected as a command indicating the selection for turning off the confirmation lamp, the confirmation lamp turn-off control command (CM1 = 83h), the primary sum check code PS, and the like. Are sent sequentially.
[0049]
In addition, the terminal device whose address is 12h that has received this signal returns its own address DA, return data Da, and secondary sum check code SS. At this time, the return data Da includes data indicating that the confirmation lamp is turned off. In addition to the above-mentioned confirmation lamp turn-off control instruction (CM1 = 83h), commands sent by selecting include a fire test instruction (CM1 = 82h), a confirmation lamp lighting control instruction (CM1 = 84h), an inter-CL control instruction ( CM1 = 85h), start / return command of smoke prevention repeater (CM1 = 86h), interlocking sounding control command (CM1 = 87h), manual sounding control command (CM1 = 88h), SCI disconnection control command (CM1 = 89h) , Fire restoration command (CM1 = F0h), storage restoration command (CM1 = F1h) district sound stop command (CM1 = F2h), emergency broadcast stop command (CM1 = F3h), type information ID return command (CM1 = 00h), status There is an information return command (CM1 = 01h) and the like, and the content is basically the same as the selecting with the content of turning off the confirmation lamp except that the command content is different.
[0050]
Next, the case where a plurality of transmitters are reporting in the “transmitter detection frame” of “point polling” will be described with reference to FIG.
[0051]
FIG. 4 shows a time chart when three transmitters are operated.
[0052]
In FIG. 4, the transmitter call pulse PC output at the timing CP from the fire receiver RE is shown at the top, and the transmitters A, B, and C that have been sent are sent to the second to fourth stages. Address signals are shown. In the description of FIG. 4, for convenience of explanation, each address is represented by a decimal number instead of a hexadecimal number. Here, the address of transmitter A is 181 (decimal number, which is expressed as a binary number represented by 8 bits, 10110101), and the address of transmitter B is 96 (decimal number, which is expressed by 8 bits). The address of the transmitter C is 204 (decimal number, which is expressed as a binary number represented by 8 bits, 11001100). When each transmitter A, B, C receives a transmitter call pulse PC from the fire receiver RE at timing CP, it starts sending its own address bit by bit 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, since the address of the transmitter A is 10110101 (binary number) and the address of the transmitter C is 11001100 (binary number), the most significant bit is 1.
[0053]
Accordingly, the transmitter B transmits 0, that is, an inactive level, while the signal line is in an active level indicating 1 and therefore the transmitter B transmits an address larger than its own address. The machine determines that it is sending a signal and stops sending its own address. Next, for the transmitter A and the transmitter C that are sending addresses, the next (next lower) bit of each address is compared. Then, the bit is 0 for transmitter A, and the bit is 1 for transmitter C. Accordingly, the transmitter A is transmitting the inactive level, and on the other hand, since the signal line is in the active level, the transmitter A is transmitting a signal with a transmitter having an address larger than its own address. It is judged that the transmission of its own address is interrupted. As a result of the above operation, the transmitter that finally sends out its own address is one of the transmitters C that have the largest address among the operated transmitters. Then, as shown in the lowermost part of FIG. 4, the signal on transmission is sent with the address of the transmitter C as 8 bits, with the transmitter call pulse from the fire receiver RE as the start bit.
[0054]
FIG. 5 is a block diagram illustrating an example of the fire receiver RE in the embodiment. The fire receiver RE includes a microprocessor MPU1, ROMs (Read Only Memory) 11 to 13, RAMs (Random Access Memory) 11 to 19, IFs 11 to 13, a signal transmission / reception unit TRX1, an operation unit OP, a display The unit DP and the timer Tslt are included.
[0055]
The ROM 11 is a storage area for programs related 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 terminal number, and the type information ID. The ROM 13 is a storage area for an interlocking control table that indicates the interlocking control relationship between a fire area and a controlled device such as a fire door to be controlled.
[0056]
The RAM 11 is a work area. The RAM 12 is a storage area for the return data D1 and the secondary sum check code SS returned from the terminal device in the point polling group information collection frame. The RAM 121 stores the return data D1 and the RAM 122 stores the secondary sum check code SS. It consists of. The RAM 13 is a storage area for various terminal device addresses and type information IDs. 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 after that, when the terminal device needs to be changed, the address and type information ID need to be changed. These can be changed by operating the operation unit OP. When the type information ID is returned in the point polling group information collection frame, the type information ID previously stored in the RAM 13 is updated to the returned type information ID. The RAM 14 is a storage area for storing an address AD, a command CM1, a command CM2, and a primary sum check code PS to be transmitted to the terminal device in the group information collection frame. The RAM 14 includes a RAM 141 that stores an address AD, a RAM 142 that stores a command CM1, a RAM 143 that stores a command CM2, and a RAM 144 that stores a primary sum check code PS.
[0057]
The RAM 15 is a storage area for the address of the transmitter returned in the point polling transmitter detection frame. The RAM 16 stores, for each address, a variable fx (hereinafter referred to as a transmission abnormality detection variable) indicating the number of times a transmission abnormality has been detected for the terminal device with the address x. Here, the transmission abnormality detection variable fx is expressed in decimal notation.
[0058]
The RAM 17 is a storage area for storing an address AD, a command CM1, and a primary sum check code PS to be transmitted to the terminal device in system polling. The RAM 17 includes a RAM 171 that stores an address AD, a RAM 172 that stores a command CM1, and a RAM 173 that stores a command CM2. The RAM 18 is a storage area for storing an address AD, a command CM1, and a primary sum check code PS to be transmitted to the terminal device in selecting. The RAM 18 includes a RAM 181 for storing an address AD, a RAM 182 for storing a command CM1, and a RAM 183 for storing a primary sum check code PS.
[0059]
The RAM 19 is a storage area for the terminal device's own address DA, return data Da, and secondary sum check code SS returned from the terminal device during the selection. The RAM 19 includes a RAM 191 for storing the terminal device's own address DA, a RAM 192 for storing the return data Da, and a RAM 193 for storing the secondary sum check code SS. The timer Tslt is a timer that manages the start time and end time of the slot for receiving the status information and the transmitter slot.
[0060]
The IF 11 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. The IF 13 is an interface that connects the signal transmission / reception unit TRX1 and the microprocessor MPU1. The signal transmission / reception 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, which is provided with various switches, numeric keys, and the like. DP is a display unit and is provided with various indicator lamps, CRT and the like.
FIG. 6 is a block diagram showing an analog photoelectric fire detector S as an example of a terminal device in the embodiment.
[0061]
The analog photoelectric fire detector S includes a microprocessor MPU2, ROM 21, ROM 22, RAMs 21 to 28, IFs 21 to 26, a signal transmitting / receiving unit TRX2, and 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 a clock generation source CLK that generates a pulse at a predetermined time interval and performs sensor processing such as light emission and light reception, that is, smoke detection operation by driving the light emitting diode LD and the photodiode PD. , A light-emitting diode LED as an operation check lamp, a timer Td, a light-emitting circuit LDC that causes the light-emitting diode LD to emit light at a predetermined light emission amount, a light-receiving circuit PDC having an amplifier circuit and a sample hold circuit, and the operation check lamp LED are turned off And the light-emitting circuit LEDC that controls lighting and the sensitivity of the light-receiving unit And a fire test circuit TE for performing a fire test is increased to a value.
[0062]
The ROM 21 is a storage area for programs related to operations such as point processing, system processing, and selecting processing. In other words, the ROM 22 is a storage area for the self-address and type information ID, which is also used as the group number to which it belongs and the upper digit as the group number and the lower digit as the terminal number. A dip switch or the like may be used instead of the ROM 22.
[0063]
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 of the slot allocated to itself, that is, the timing of returning the status information of the terminal number m within the group to the fire receiver RE. The return timing is calculated from the intra-group terminal number m indicated by the lower digit of its own address immediately after the initial setting, and is indicated by the information return start time Tdm.
[0064]
The RAM 24 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. The RAM 24 includes a RAM 241 that stores an address AD, a RAM 242 that stores a command CM1, a RAM 243 that stores a command CM2, and a RAM 244 that stores a primary sum check code PS.
[0065]
The RAM 25 is an area for storing return data D1 and a secondary sum check code SS sent to the fire receiver RE in the point polling group information collection frame. The RAM 25 includes a RAM 251 that stores return data D1 and a RAM 252 that stores a secondary sum check code SS.
[0066]
The RAM 26 is a storage area for storing an address AD, a command CM1, and a primary sum check code PS in system polling. The RAM 26 includes a RAM 261 that stores an address AD, a RAM 262 that stores a command CM1, and a RAM 263 that stores a primary sum check code PS.
[0067]
The RAM 27 is a storage area for storing an address AD in selection, a command CM1, and a primary sum check code PS. The RAM 27 includes a RAM 271 that stores an address AD, a RAM 272 that stores a command CM1, and a RAM 273 that stores a primary sum check code PS.
[0068]
The RAM 28 is a storage area for the self-address DA, the return data Da, and the secondary sum check code SS of the fire detector S returned in selecting. The RAM 28 includes a RAM 281 for storing the self address DA, a RAM 282 for storing the return data Da, and a RAM 283 for storing the secondary sum check code SS.
[0069]
The IF 21 is an interface that connects the clock CLK and the microprocessor MPU2. The IF 22 is an interface that connects the fire test circuit TE and the microprocessor MPU2. The IF 23 is an interface that connects the signal transmission / reception unit TRX2 and the microprocessor MPU2. The IF 24 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 smoke detection light emitting circuit LDC and the microprocessor MPU2. Td is a return timing management timer for managing the data return start time and the like. The signal transmission / reception unit TRX2 is the same as the signal transmission / reception unit TRX1.
[0070]
Although not shown, the analog fire detector S is not limited to the photoelectric type shown in the present embodiment, and may be a thermal type, a flame type, a gas type, an odor type, or the like. In this case, instead of the light-emitting diode LD for smoke detection and the light-emitting circuit LDC, the photodiode PD and the light-receiving circuit PDC, in the case of a thermal analog fire detector, a thermistor as a heat sensing means and its detection circuit In the case of a flame type analog fire sensor, a light receiving element such as a pyroelectric element or an ultraviolet ray detection element and its detection circuit are provided, and in the case of a gas type analog fire sensor, a gas sensor and its In the case of the odor type provided with a detection circuit, the basic structure is the same except that a odor sensor and its detection circuit are provided.
[0071]
FIG. 7 is a block diagram showing a repeater RP as an example of the terminal device in the embodiment.
[0072]
The repeater RP is connected to the microprocessor MPU3, the ROM 31, ROM 32, the RAMs 31 to 38, the IFs 31 to 38, the timer Td which is a return timing management timer for managing the data return start time and the like, and the repeater RP. A fire signal receiving circuit FSR that receives a fire signal from an on-off type fire detector, and a sensitivity of the light receiving part of the on-off type fire detector connected to a repeater is increased to a predetermined value to perform a fire test. Fire test circuit TE, district acoustic control circuit LAC for controlling a district bell (not shown), inter-CL control circuit CLR for controlling on / off of power between the fire receiver RE and the repeater RP, and a fire door D (not shown) Smoke prevention control circuit BHR that controls the opening and closing of the SCI, and SCI disconnection control circuit SCR that controls the ON / OFF of the power supply at the relay RP and the signal line end And a broadcast control circuit BAC for controlling alarm generation from a speaker (not shown) and a signal transmission / reception unit TRX3.
[0073]
The ROM 31 is a storage area for programs and the like relating to the flowcharts shown in FIGS. The ROM 32 is a storage area for a self-address and type information ID, etc., 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 32.
[0074]
The RAM 31 is a work area. The RAM 32 is a storage area for storing current status information, that is, whether or not the on / off type fire detector F is transmitting a signal indicating a fire.
[0075]
The RAM 33 is a storage area of a slot allocated to itself, that is, a timing at which the status information of the terminal number m in the group is returned to the fire receiver RE. Hereinafter, this timing is indicated by an information return start time Tdm. The return timing is calculated from the terminal number indicated by the lower digit of its own address (U2 in FIG. 16) immediately after the initial setting (U1 in FIG. 16).
[0076]
The RAM 34 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. The RAM 341 for storing AD, the RAM 342 for storing CM1, It consists of a RAM 343 for storing CM2 and a RAM 344 for storing PS.
[0077]
The RAM 35 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, and includes a RAM 351 for storing D1 and a RAM 352 for storing SS.
[0078]
The RAM 36 is composed of a RAM 361 for storing AD in a storage area for storing an address AD, command CM1 and primary sum check code PS in system polling, a RAM 362 for storing CM1, and a RAM 363 for storing PS. The RAM 37 is a storage area for storing an address AD, a command CM1, and a primary sum check code PS in selecting, and includes a RAM 371 for storing the address AD, a RAM 372 for storing the CM1, and a RAM 373 for storing the PS.
[0079]
The RAM 38 is a storage area for the terminal device's own address DA, return data Da, and secondary sum check code SS returned in selecting. The RAM 381 stores the address DA, the RAM 382 stores Da, and the RAM 383 stores SS. Consists of.
[0080]
IF 31 is an interface for connecting the fire signal receiving circuit FSR and the microprocessor MPU3. The IF 32 is an interface for connecting the fire test circuit TE and the microprocessor MPU3. The IF 33 is an interface for connecting the district sound control circuit LAC and the microprocessor MPU3. The IF 34 is an interface for connecting the inter-CL control circuit CLR and the microprocessor MPU3. The IF 35 is an interface for connecting the smoke prevention control circuit BHR and the microprocessor MPU3. The IF 36 is an interface for connecting the SCI disconnection control circuit SCR and the microprocessor MPU3. The IF 37 is an interface for connecting the broadcast control circuit BAC and the microprocessor MPU3. The IF 38 is an interface for connecting the signal transmission / reception unit TRX3 and the microprocessor MPU3. The signal transmission / reception unit TRX3 is the same as the signal transmission / reception unit TRX1.
[0081]
Here, in the above embodiment, an on / off type fire detector, a district bell, a fire door, and a speaker are connected to one repeater, but at least one of those devices is connected to the repeater. You may comprise.
[0082]
FIG. 8 is a block diagram showing the transmitter P in the embodiment.
[0083]
The transmitter P includes a microprocessor MPU4, ROM41, ROM42, RAM41-49, IF41-43, signal transmitter / receiver TRX4, a switch SW such as a push button to be operated in the event of a fire, and light emission as a response lamp. A light emitting circuit LEDC that emits a diode LED, a response lamp LED, and a bit timer Tb are included.
[0084]
The ROM 41 is a storage area for programs and the like relating to the flowcharts shown in FIGS. The ROM 42 is a self-address storage area 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.
[0085]
The RAM 41 is a work area. The RAM 42 is an area for storing current operation information. The RAM 43 is an area for storing the timing for returning its own operation information to the fire receiver RE in the operations shown in FIGS. 18 and 19. The timing is calculated from the in-group terminal number m indicated by the lower digit of its own address immediately after the initial setting as in the case of the analog photoelectric fire detector S.
[0086]
The RAM 44 is an area for storing its own address setting which is sent out in FIGS. 18 and 19 when the transmitter is operating.
[0087]
The RAM 45 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. The RAM 451 for storing AD, the RAM 452 for storing CM1, It consists of a RAM 453 for storing CM2 and a RAM 454 for storing PS.
[0088]
The RAM 46 is an area for storing return data D1 sent to the fire receiver RE and the secondary sum check code SS in the point polling group information collection frame, and is composed of a RAM 461 for storing D1 and a RAM 462 for storing SS. The RAM 47 is an area for storing an address AD, a command CM1, and a primary sum check code PS received from the fire receiver RE in system polling. The RAM 47 includes a RAM 471 for storing AD, a RAM 472 for storing CM1, and a RAM 473 for storing PS. .
[0089]
The RAM 48 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 the selection. The RAM 481 stores the AD, the RAM 482 stores the CM1, and the RAM 483 stores the PS. Become. The RAM 49 is an area for storing its own address DA, return data Da, and secondary sum check code SS to be sent to the fire receiver RE, and RAM 491 for storing DA and RAM 492 and SS for storing Da. RAM 493 to be used.
[0090]
The IF 41 is an interface that connects the signal transmission / reception unit TRX4 and the microprocessor MPU4. The IF 42 is an interface that connects the switch SW such as a push button type and the microprocessor MPU 4. The IF 43 is an interface for connecting the light emitting circuit LEDC as a response lamp and the microprocessor MPU4. The signal transmission / reception unit TRX4 is the same as the signal transmission / reception unit TRX1. The bit timer Tb is a management timer for preventing a transmitter call pulse, which will be described later, and an address transmission signal and an address transmission signal from overlapping each other.
[0091]
FIG. 9 is a diagram showing a system flowchart of the fire receiver RE in the embodiment. First, after the fire alarm facility is started up by turning on the power, initial setting is performed (S1). For example, transmission abnormality detection variables fx for all addresses are set to zero. Then, it is determined whether or not a selecting command such as turning off the confirmation lamp 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 ( S2), it is determined whether or not a system polling command is input by the operator from the operation unit OP of the fire receiver RE (S3). If it is determined that the command is not input (N of S3) ), Point polling is performed (S4), the process returns to S2 and the above operation is repeated. If it is determined in S2 that a selection command for turning off the confirmation lamp is input by the operator from the operation unit OP of the fire receiver RE, the selection is performed (S6).
[0092]
If it is determined in S3 that the system polling command is input by the operator from the operation unit OP of the fire receiver RE (Y in S3), system polling is performed (S5). Therefore, when there is no input by the operator from the operation unit OP, point polling in S4 is performed.
[0093]
The detailed contents of each polling and selecting are input by the operator from the operation unit OP of the fire receiver RE, and the contents of AD, CM1, CM2, and PS are determined based on the input, and various polling and selecting are performed. Is done.
[0094]
10 to 12 are flowcharts specifically showing the point polling (S4) in FIG.
[0095]
Here, the aforementioned “group information collection frame” corresponds to S401 to S431, and the “transmitter detection frame” corresponds to S432 to S438.
[0096]
First, a polling command (AD = FFh), a status information return command in point polling (CM1 = 01h), and a group designation code in point polling (for example, CM2 = 00h) are stored in the RAM 141, RAM 142, and RAM 143, respectively (S401 to S403). ).
[0097]
Next, the number of active bits of the transmission bytes of AD of RAM 141, CM1 of RAM 142, and CM2 of RAM 143 is counted (S404), each count value is obtained, and this count value is added to obtain an added value (S405). . Next, the added value is inverted to obtain an inverted value (S406). The most significant bit of the inverted value is deleted to obtain a primary sum check code PS (S407). The primary sum check code PS is stored in the RAM 144 (S408).
[0098]
The address AD, the command CM1, the command CM2, and the primary sum check code PS stored in the RAM 141 to RAM 144 are sequentially transmitted from the signal transmitting / receiving unit TRX1 (S409).
[0099]
Next, the management timer Tslt is started (S410), and m is reset to 0 (S411). Here, m is a hexadecimal number indicating the intra-group terminal number. If the timer Tslt has already been started, a reset is performed to clear and restart (S411). Next, it is determined whether or not the management timer Tslt is the start time Tsm of the slot for receiving the return data D1 and the primary sum check code SS returned from the terminal device with the intra-group terminal number m. (S412). Here, the lower case letter m of the slot start time Tsm indicates the intra-group terminal number.
[0100]
When it is determined that the management timer Tslt is the start time Tsm of the slot (Y in S412), the reception enabled state, that is, the reception enabled state is entered (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 waits until the management timer Tslt reaches the slot start time Tsm (N in S412). 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 performed on the terminal device.
[0101]
When the reception enabled state is established and the return data D1 is received from the terminal device within the first predetermined time T1 (Y in S414, Y in S439), the data D1 is stored in the RAM 121 (S415). Here, the first predetermined time T1 refers to the time from the slot start time Tsm to the slot start time Tsm + 1 of the terminal device having the intra-group terminal number that is one larger than the intra-group terminal number of the terminal device, that is, m + 1. . The management timer Tslt determines whether or not the first predetermined time T1 has been exceeded (S437).
[0102]
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 122 (S417). The second predetermined time T2 here refers to the time from the slot start time Tsm to the slot end time Tem for the intra-group terminal number m. The management timer Tslt also determines whether or not the second predetermined time T2 has been exceeded (S438). Next, a sum check is performed based on the secondary sum check code SS stored in the RAM 122 in order to determine whether or not the transmission from the terminal device to the fire receiver RE is normally performed.
[0103]
That is, the address AD, command CM1, command CM2, primary sum check code PS and return data D1 stored in the RAM 141 to RAM 144 and RAM 121 are read (S418 to S422), AD, CM1, CM2, and primary sum check code PS. , Count the number of each active bit of the transmission byte of D1 (S423), and add this count value to obtain an added value (S424). Next, the added value is inverted to obtain an inverted value (S425). The most significant bit of the inverted value is deleted (S426), and the operation result, that is, the secondary operation code SC1 is obtained. It is determined whether or not the secondary operation code SC1 matches the secondary sum check code SS stored in the RAM 122 (S427).
[0104]
If the result of the sum check matches (Y in S427), the transmission has been performed normally. Therefore, the process proceeds to S428. If the point polling is performed for the first time, the transmission abnormality detection variable fx is 0. Reception is prohibited (Y in S428, S429), and the reading of data from the terminal device having the intra-group terminal number m ends here. Accordingly, data being received at this time is discarded. Then, m is incremented by 1 (S430), and the above S412 to S429 are repeated again to collect the return data D1 and the secondary sum check code SC1 from the terminal device having the intra-group terminal number m + 1.
[0105]
Then, the above S412 to S431 are repeated until the value of m reaches 10h. When m exceeds 10h (N of S431), the process proceeds to S432. That is, if it is determined that m exceeds 10h, the collection of the return data D1 and the secondary sum check code SS from all 16 terminal devices in the group is completed, and the process proceeds to S432.
[0106]
In this manner, the return data D1 from each terminal device belonging to one group is sequentially returned as group information in the slot prepared for each terminal device, and collected by the fire receiver RE.
[0107]
In S439, when the return data D1 is not received from the terminal device whose address is x within the predetermined time Tsm + 1 (N in S439), no response processing is performed for the terminal device of x number (S441). . The no-response processing here means that the transmission abnormality detection variable fx is incremented by 1 for the terminal device whose address is x. When the transmission abnormality detection variable fx becomes 3, for example, the fire receiver This means that an abnormal display (display that there is a transmission abnormality) is performed on the display unit DP of the RE. Here, the variable fx indicating the number of transmission abnormality detections is stored in the RAM 16 for each address.
[0108]
In S440, when the secondary sum check code SS is not received from the x-th terminal device within the predetermined time Tem, the process proceeds to S441 (N in S440), and the transmission abnormality detection variable fx is incremented by 1. When the transmission abnormality detection variable fx becomes 3, abnormality display (display that there is a transmission abnormality) is performed on the display unit DP of the fire receiver RE. Similarly to the above, the transmission abnormality detection variable fx is stored in the RAM 16 for each address. Further, if the secondary operation code SC1 does not match the secondary sum check code SS in S427, that is, if the result of the sum check does not match (N in S427), an erroneous response process is performed (S442). ). In the erroneous response process here, 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 unit DP of the fire receiver RE An error display (display that there is a transmission error) is performed. Note that fx is stored in the RAM 16 by address.
[0109]
In S428, when the point polling is performed for the second time or later, it is determined whether or not the transmission abnormality detection variable fx is 0, that is, the terminal device that is receiving data up to the previous time does not respond to an error response or error in the previous point polling. It is determined whether or not response processing has been performed, that is, whether or not fx stored in the RAM 16 for each address is zero. If no such abnormality has been detected in the previous time, that is, if it is determined that fx is 0 (Y in S428), the reception is prohibited (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, if transmission abnormality detection such as no response processing or erroneous response processing is not performed three times in succession, abnormality display (display of transmission abnormality) is not performed. In this case as well, the transmission abnormality detection variable fx that has become 0 is stored in the RAM 16 for each address.
[0110]
As a result, even if a transmission abnormality such as no response processing or erroneous response processing occurs during point polling, point polling can be continued without interruption.
[0111]
Hereinafter, the operation of the “transmitter detection frame”, that is, the operation of S432 to S438 will be described.
[0112]
Next, the microprocessor MPU1 determines whether or not the management timer Tslt is the transmitter slot start time Tp (S432). When it is determined that the management timer Tslt is the transmitter slot start time Tp (Y in S432), the “transmitter detection frame” is started, and the reception enabled state, that is, the reception enabled state is set (S433). Thereafter, a transmitter call pulse PC is transmitted from the signal transmission / reception unit TRX1 (S434). The transmitter call pulse PC also serves as a start bit of a return signal from the transmitter. Further, the transmitter call pulse PC is a call pulse for transmitters belonging to all groups, not just the transmitters in the group. For this reason, the fire receiver RE can collect the addresses ADp of the transmitters P that are in reporting and belong to all groups.
[0113]
Next, when the address ADp of the transmitter P is received from the transmitter P that is making a report within the third predetermined time T3 (Y in S435, Y in S444), the address ADp is stored in the RAM 15 ( In S436, the fact that the transmitter P has issued is displayed on the fire receiver RE together with the address of the transmitter P (S437), and the group designation code CM2 is incremented by 1 and stored in the RAM 143 (S438). At this time, the memory for the old CM2 is erased. Here, the third predetermined time T3 refers to 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.
[0114]
On the other hand, if 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).
[0115]
Further, in S435, when the fire receiver RE does not receive the address ADp of the transmitter P from the transmitter P that is reporting until the third predetermined time T3 (N in S435, N in N444), Similarly, the group designation code CM2 is incremented by 1 and stored in the RAM 143 (S438). At this time, the memory for the old group designation code CM2 is erased.
[0116]
In S438, when the group designation code is the last group number, the process returns to the first group number.
[0117]
In this way, the address ADp of the transmitter P that is in the process of reporting belonging to all groups is returned as the transmitter address information between the transmitter slots and collected by the fire receiver RE. Then, in S438, the group designation code CM2 is incremented by 1, and after the second waiting field WF2 (not shown) in which the fire receiver RE does nothing to the terminal device, the microprocessor MPU1 performs FIG. When there is no selecting command and system polling command (N in S2, N in S3), point polling including “group information collection frame” for group number 1 is performed.
[0118]
The second weighting field WF2 is processed by the terminal device so as to provide signal transmission redundancy due to variations in the return time of the return data D1 and the secondary sum check code SS returned from each terminal device. This is to reduce transmission and to synchronize transmission byte frames.
[0119]
The group numbers 2, 3,. . . After the point polling consisting of the “group information collection frame” and “transmitter detection frame” for 15 is finished, it is not shown, but instead of the status information return command (CM1 = 01h), the type information ID return command (CM1 = 00h) is sent together with AD and CM2 from the fire receiver RE, so that the group numbers 0, 1, 2, 3,. . . , 15 for point polling consisting of a “group information collection frame” and a “transmitter detection frame” for collecting the type information ID. 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 becomes the type information ID instead of the state information. It is. Then, after this point polling is completed, hereinafter, “group information collection frame” and “group information collection frame” and “type information ID” that collect point polling consisting of “group information collection frame” and “transmitter detection frame” that collect state information are collected. Point polling consisting of “transmitter detection frame” is repeated alternately.
[0120]
In the above embodiment, the transmission frame length management timer Tf is provided in the fire receiver RE and is started prior to S2, and the operation up to S438 before the timer overflows, or the second waiting If the field WF2 does not end, the point polling in the group in which point polling is being performed may be forcibly terminated, and the point designation for the next group may be started by incrementing the group designation code CM2. .
[0121]
Through such operations, the status information of the terminal devices belonging to the groups G0 to G15 is collected for each group, and at the same time, the addresses of the transmitting transmitters belonging to all groups are collected by one point polling. Is possible. Based on the collected data, the fire receiver RE can detect the terminal device that has detected an abnormality or the like.
[0122]
In the above description of operation, point polling consisting of “group information collection frame” and “transmitter detection frame” for collecting status information, and “group information collection frame” and “transmitter detection frame” for collecting type information IDs. The point polling consisting of “group information collection frame” and “transmitter detection frame” that collect status information is always performed, and the type is determined from the operation unit OP. “Group” that collects type information ID only when the operator inputs an instruction to perform point polling consisting of “group information collection frame” and “transmitter detection frame” to collect information ID to the fire receiver RE Point polling consisting of “information collection frame” and “transmitter detection frame” Collect the type information ID of the terminal device, then again, may return to the routine for collecting state information as "group information acquisition frame" the point polling consisting "Call detection frame". In “point polling” for collecting the type information ID, the transmitter detection frame may be omitted.
[0123]
FIG. 13 is a flowchart showing a specific example when the operator inputs a command to perform system polling to the fire receiver RE from the operation unit OP in FIG. 9 (S5).
[0124]
In S5, when there is an input command from the operation unit OP, AD and CM1 are stored in the RAM 171 and RAM 172 by system polling (S501 and S502), and the number of active bits of each transmission byte of the AD and the CM1. Are counted (S503) to obtain a count value, and an addition value is obtained by adding the count value (S504). Next, the added value is inverted to obtain an inverted value (S505). The most significant bit of the inverted value is deleted to obtain a primary sum check code PS (S506). The primary sum check code PS is stored in the RAM 173 (S507).
[0125]
The AD stored in the RAM 171 to RAM 173,
CM1 and the primary sum check code PS are sequentially transmitted from the signal transmission / reception unit TRX1 (S508), and the AD, the CM1, and the primary sum check code PS are deleted from the RAM 17 to prevent retransmission (S509). And it returns to S2 of FIG.
[0126]
In the present embodiment, the AD, CM1, and primary sum check code PS are sent from the fire receiver RE and no response is made from the terminal device. However, the command sent from the fire receiver RE is not used. The point polling shown in FIGS. 10 to 12 includes a response signal D1 for informing that the terminal 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 has been performed normally. As in the case of, the terminal device may transmit to the fire receiver RE.
[0127]
FIG. 14 and FIG. 15 are flowcharts showing a specific example when the operator inputs a command for performing selection from the operation unit OP to the fire receiver RE (S6).
[0128]
In S6, when there is an input command from the operation unit OP, the address AD and the command CM1 in the selection are read out to the RAM 181 and RAM 182 (S601, S602), and each AD and the active bit of the transmission byte of the CM1 are read. The number is counted (S603), and this 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 the inverted value is deleted to obtain a primary sum check code PS (S606). The primary sum check code PS is stored in the RAM 183 (S607). Then, the address AD, the command CM1, and the primary sum check code PS stored in the RAM 181 to RAM 183 are sequentially transmitted from the signal transmitting / receiving unit TRX1 (S608).
[0129]
Next, the management timer Tslt is started (S609). Next, the management timer Tslt is returned from the terminal device with the intra-group terminal number m and the secondary address DA and return data Da. It is determined whether or not it is the start time T4 of the slot for receiving the sum check code SS (S610). When it is determined that the management timer Tslt is the start time T4 of the slot (Y in S610), the reception enabled state, that is, the reception enabled state is entered (S611).
[0130]
On the other hand, if it is determined that the management timer Tslt has not reached the slot start time T4, the management timer Tslt waits until the management timer Tslt reaches the slot start time T4 (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 performed on the terminal device.
[0131]
If the self-address DA is received from the terminal device within the predetermined time T5 (Y in S612, N in S629), the DA is stored in the RAM 191 (S613). The management timer Tslt determines whether or not the predetermined time T5 has been exceeded. 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). The management timer Tslt also determines whether or not the predetermined time T6 has been exceeded. Next, when the secondary sum check code SS is received from the terminal device within the predetermined time T7 (Y in S616, N in S631), the SS is stored in the RAM 193 (S617). The management timer Tslt also determines whether or not the predetermined time T7 has been exceeded.
[0132]
Next, a sum check is performed based on the secondary sum check code SS stored in the RAM 193 in order to determine whether or not the transmission from the terminal device to the fire receiver RE is normally performed.
[0133]
That is, the address AD and the command CM1, the primary sum check code PS, the self address DA, and the return data Da stored in the RAM 181 to RAM 183, the RAM 191 and the RAM 192 are read (S618 to S622), the address AD and the command CM1, and the primary sum. The number of active bits of each transmission byte of the 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 to obtain an added value (S624). Next, the added value is inverted to obtain an inverted value (S625). The most significant bit of the inverted value is deleted (S626), and the result of the operation, that is, the secondary operation code SC2 is obtained. Then, it is determined whether or not the secondary operation code SC2 matches the secondary sum check code SS stored in the RAM 193 (S627).
[0134]
If the result of the sum check matches, transmission has been performed normally (Y in S627), reception is prohibited as it is (S628), and the process returns to S2 in FIG.
[0135]
In S612, if the self-address DA is not received from the terminal device within the predetermined time T5, the process proceeds to S632 (Y in S629), and no response processing, that is, an abnormal display (nothing is displayed on the display unit DP of the fire receiver RE). Display).
[0136]
Furthermore, when the return data Da is not received from the terminal device within the predetermined time T6 in S630 or when the secondary sum check code SS is not received from the terminal device within the predetermined time T7 in S631, the process returns to S632. Proceeding (Y in S630, Y in S631), no response processing, that is, an abnormality display (displaying that there is a transmission abnormality) is performed on the display unit DP of the fire receiver RE.
[0137]
Furthermore, if the secondary operation code SC2 does not match the secondary sum check code SS in S627, that is, if the result of the sum check does not match (N in S627), an erroneous response process, that is, a fire receiver. An abnormal display (display that there is a transmission abnormality) is performed on the display section DP of the RE.
[0138]
FIG. 16 is a diagram illustrating a main flowchart of the repeater RP as an example of the terminal device in the embodiment.
[0139]
First, initialization is performed (U1), and a return timing, that is, an information return start time Tdm is calculated from the intra-group terminal number (U2). If there is a received signal (Y in U3), AD, CM1, CM2, and PS are stored in RAM 341 to RAM 344, respectively (U4 to U7).
[0140]
Next, the number of active bits of the transmission bytes of AD of RAM 341, CM 1 of RAM 342, CM 2 of RAM 343, and PS of RAM 344 is counted (U8), each count value is obtained, and the added value is obtained by adding this count value. Obtain (U9). Next, the added value is inverted to obtain an inverted value (U10). The most significant bit of the inverted value is deleted to obtain the primary operation code SC3 (U11). It is determined whether or not the primary operation code SC3 and the primary sum check code PS match (U12). If the result of the sum check for the received signal matches, transmission has been performed normally (Y in U12), and it is determined whether the content of AD is a point polling command (U13). If it is a polling command, it is determined whether or not the content of CM1 is a point processing command (U14). If it is a point processing instruction (CM1 = 0Xh), point processing is performed (U15).
[0141]
If it is determined in U13 that the command is not a point polling instruction (AD ≠ FF) (N in U13), a selecting process is performed.
[0142]
On the other hand, if it is determined in U14 that the instruction of CM1 is not a point processing instruction (CM1 ≠ 0Xh) (N of U14), system processing is performed (U16).
[0143]
In U3, when there is no received signal (N in U3), state information is collected (U18), and the obtained state information is stored in the RAM 32. At this time, for example, data for the previous five times are stored in the RAM 22, and the oldest state information is erased (U19, U20).
[0144]
Here, the state information is collected by detecting whether there is 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, When the fire door D is connected, the repeater detects the open state signal indicating the open state and the closed state signal indicating the closed state, and when the district bell B is connected, the ringing state is indicated. This is done by detecting the ringing state signal shown by the repeater. The above operation is the same for the fire detector such as the photoelectric fire detector S and the transmitter P.
[0145]
Also, when CM2 is not sent from the fire receiver RE as in system polling or selecting, the above operation is basically the same except that the step U6 is not performed.
[0146]
FIG. 17 is a flowchart showing the point processing operation of the repeater RP. Here, the microprocessor MPU3 determines whether the group to which it belongs is called (U101). If it is determined that the own group number and the upper digit of CM2 match (Y in U101), it is determined that the group to which it belongs is specified, and its own status information is returned to the fire receiver RE. Therefore, the following operation is performed. That is, in order to determine the contents of the point processing, it is determined whether or not the received command CM1 is a status information return command (U102). If it is a status information return command, the current status information is read from the RAM 32 and this status information is read. Is stored in the RAM 351 as the return data D1 (U103). 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.
[0147]
Next, it is determined whether or not the timer Td is the information return start time Tdm (U105). Here, the lower case letter m of the information return start time Tdm slot indicates the intra-group terminal number. When the timer Td is the information return start time Tdm (Y in U105), AD, CM1, CM2, PS, and D1 stored in the RAM 341 to RAM 343 and RAM 351 are read (U106 to U110). The number of active bits of the transmission bytes of the AD, CM1, CM2, PS, and D1 is counted (U111), and an added value is obtained by adding the count value (U112). Next, the added value is inverted to obtain an inverted value (U113). The most significant bitini next sum check code SS of this inverted value is set (U114). Then, the return data D1 and the secondary sum check code SS stored in the RAM 351 and RAM 352 are sequentially transmitted from the signal transmission / reception unit TRX1 (U115).
[0148]
On the other hand, if the microprocessor MPU3 determines in U101 that the self group number does not match the high-order digit of CM2 (N in U101), it determines that the group to which it belongs is not specified, and proceeds to return. Point processing is not performed.
[0149]
On the other hand, when the received signal is not a status information return command in U102 (CM1 ≠ 01h), that is, a type information ID return command (CM1 = 02h) (N in U102), it is stored in the ROM 32. The own type information ID is read out and stored in the RAM 351. Thereafter, U104 to U113 are executed. The basic operation of U104 to U113 is the same as that described above except that the type information ID of the device itself is sent as return data D1 to the fire receiver RE instead of the status information.
[0150]
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 is reached.
[0151]
In U102 to U105, the fire receiver RE side is the first waiting field WF1 that does nothing with the terminal device (S412), and therefore the repeater RP is connected to itself. Data analysis such as fire signals obtained from the on-off type fire detector F can be performed under favorable conditions.
[0152]
In the above embodiment, the point processing of the relay RP is shown as an example of the terminal device, but this is a fire detector such as a photoelectric fire detector or a thermal fire detector. Is basically the same. That is, for example, in the case of the photoelectric fire detector S, the collection of the state information is periodically performed by the light emitting diode LD connected to the light emitting circuit LDC by the generation of the clock pulse from the clock, and the light receiving circuit PDC. This is basically the same as the repeater RP except that the connected photodiode PD receives the scattered light of the emitted light and detects the smoke density.
[0153]
Further, in the above, the information return start time Tdm is calculated from the own intra-group terminal number m in U2, and the larger the intra-group terminal number m of each terminal device, that is, the farther from the fire receiver RE. The information return start time Tdm is set to be delayed as the terminal device is displayed. In order to calculate the information return start time Tdm, for example, a group terminal number m and a table of information return information are stored in a predetermined ROM of the terminal device, and a corresponding information return from the own group terminal number m is stored. Get the start time. The information return start time Tdm is the same time as the slot start time for the intra-group terminal number m generated by the fire receiver RE. As a result, the status information of each terminal device is sequentially returned to each slot provided corresponding to each terminal device in the fire receiver RE.
[0154]
18 and 19 are flowcharts showing the point processing operation of the transmitter P as an example of the terminal device in the embodiment.
[0155]
First, initialization is performed (U201), and a response to the group information collection frames U101 to U115 shown in FIG. 17 is executed (U202). Next, within a predetermined time T1a (Y in U217), it is determined whether or not each transmitter P is reporting itself by whether or not the push button SW is pressed (U203). That is, if it is determined that the push button SW has been pressed within the predetermined time T1a and the alarm is being issued (Y in U203, N in U217), the process returns to U204. On the other hand, if it is determined that the push button SW has not been pressed and the alarm has not been issued even after the predetermined time T1a has elapsed (N in U203, Y in U217), the process waits as it is. Note that whether or not the predetermined time T1a has elapsed by a timer provided in the work area RAM 41 is determined. The timer is started together with the initial setting. If the timer is 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.
[0156]
Next, when each transmitter P detects a transmitter slot generated by the fire receiver RE within a 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 data return slots in the group information collection frame have been completed.
[0157]
When the process proceeds to U205, b is set to 7, and the process proceeds to U206. Here, b is a transmission bit number counter, and b is indicated by a decimal number. Then, “AD.b” indicates the number of the higher rank by b from the lowest order of the address of the transmitter P, that is, the higher order bit by b from the lowest order. 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 described above, the address of each transmitter P is represented by a binary number represented by 8 bits.
[0158]
When the transmitter P detects the transmitter call pulse transmitted from the fire receiver RE within the predetermined time T3a in U206 (Y in U205), the bit timer Tb is started (U207). Although not shown here, it is determined whether or not its 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 that are reporting by repeating the point polling in descending order of address. Thereafter, if it is determined that the predetermined time has elapsed (Y in U208), the process proceeds to U209. If it is determined that the timer Tb has not elapsed (N in U208), the process waits as it is. The predetermined time here is a time corresponding to the width of the transmitter call pulse. 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, for example, a time corresponding to 1 bit, that is, 1/2400 seconds is employed as the predetermined time. On the other hand, when the transmitter detection pulse transmitted from the fire receiver RE by each transmitter P in U206 is not detected within the predetermined time T3a (N in U206, Y in U219), the process returns.
[0159]
In U209, the most significant bit by b is sent from the least significant bit of the address ADp of the transmitter P, the timer Tb is started again, and the process proceeds to U210. The address ADp is stored in the RAM 44.
[0160]
Then, in U210, when the higher-order bits of b from the lowest order of the address ADp sent from the transmitter P are 0 (Y in U210, N in U211), the state of the signal line is 0. Whether it is 1 or 1 is monitored and discriminated within a predetermined time (U214). In other words, the transmitter P monitors and discriminates over a predetermined time whether the higher-order bit by 0 from the lowest order of the address transmitted from other transmitters P is 0 or 1. Here, when the signal line state remains 0 and the predetermined time has elapsed (N in U214, Y in U215), 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 ( The process proceeds to U216 and U216 of U214. Note that, for example, 1/2400 seconds, which is a 1-bit width of the address transmission signal from the transmitter P, is employed as the predetermined time mentioned here. This is for sequentially comparing the number of each binary number represented by 8 bits transmitted as an address from each transmitter P.
[0161]
If the process proceeds to U216, transmission of the transmitter address from the transmitter P is forcibly terminated.
[0162]
In U210, when the most significant bit of b from the least significant address sent from the transmitter P is 1 (N in U210), a predetermined time is waited until the timer Tb overflows (U211). , B is decremented by 1 (U212), and the process proceeds to U213. Here, the reason why the waiting time is provided in this way is that there is no overlap between one bit of the address transmission signal from the transmitter P and one bit of the address transmission signal transmitted next from the same transmitter P. It is for doing so.
[0163]
If the process proceeds to U213, it is determined whether b is 0 or more. Here, if b is 0 or more (Y in U213), since all the bits of the address ADp of the transmitter P have not been transmitted, the process returns to U209, and the routines from U209 to U213 are repeated. On the other hand, if b is less than 0 (N in U213), all the bits of the address ADp of the transmitter P have been transmitted, so the transmission ends.
[0164]
Therefore, by repeating the routines from U209 to U213, the bits at each position of the address ADp of the transmitter P are sequentially transmitted from the higher order, and the transmitter P compares the transmission data and the reception data in bit units, The transmitter P which has received the active level despite transmitting the active level stops the transmission, and finally the fire receiver RE uses only one transmitter P as the notification transmitter address information. Obtainable. As shown in the explanation of the group information collection frame, one transmitter P sends a check code after completing transmission of the address of its own transmitter P, so that transmission is performed normally. The fire receiver RE may be able to confirm whether or not the
[0165]
In the above embodiment, the number of terminal devices in one group is 16. However, the number may be other than 16, and the number of groups is 16. However, the number of groups may be divided into groups other than 16. .
[0166]
In addition, when an address is assigned to each terminal device, in addition to the above-described expression using a 2-digit number, the lower digit is a group number and the upper digit is a terminal number within each group. It may be displayed using a two-digit hexadecimal number, and is not limited to two digits as long as all terminal devices can be specified. Addresses displayed in a plurality of digits on each of a plurality of terminal devices. The group number may be displayed with several digits in the address, and the terminal number within each group may be displayed with the remaining digits.
[0167]
In the above embodiment, when a plurality of transmitters issue a report, by comparing the number of each digit of the address represented as an 8-bit binary number of each transmitter that has issued the report from the top. , The highest address among the addresses of the transmitters that issued is given priority and sent to the fire transmitter RE. However, the transmitter P sends its own address sequentially from the lower bits, and the alarm is sent. The priority is given to the address of one of the transmitters that received the fire by comparing the magnitude of the number of each address represented as an 8-bit binary number of each transmitter. It may be sent to the machine RE.
[0168]
FIG. 20 is a flowchart showing the operation of the system processing (U16) of the repeater RP as an example of the terminal device in the embodiment.
[0169]
When entering the system processing (U16), AD, CM1, and PS stored in the RAM 341, RAM 342, and RAM 344 are moved to the RAM 361, RAM 362, and RAM 363, respectively.
[0170]
First, it is determined whether or not the command CM1 received by the microprocessor MPU3 is a fire recovery command (U301). If the command CM1 is a fire recovery command (Y in U301), the fire signal receiving circuit FSR, the district sound control circuit Restore LAC and return. On the other hand, if it is not a fire recovery command (N in U301), it is determined whether or not the command CM1 is a storage recovery command (U303), and if it is a storage recovery command (Y in U303), a fire signal The receiving circuit FSR is restored (U304), and the process returns. On the other hand, if it is not a storage restoration command (N in U303), it is determined whether or not the command CM1 is a district sound stop command (U305). If it is a district sound stop command (Y in S305), The district acoustic control circuit LAC is turned off (U306), and the process returns. On the other hand, if it is not a district sound stop command (N in S305), it is determined whether it is an emergency broadcast stop command (U307). If it is an emergency broadcast stop command (Y in S307), emergency broadcast control is performed. The circuit BAC is turned off (U308), and the process returns. On the other hand, if it is not an emergency broadcast stop command (N in S308), the process directly returns.
[0171]
In the present embodiment, the system polling for the repeater RP has been described. However, in the case of a fire detector such as the photoelectric fire detector S, it is not controlled by the district sound stop command and the emergency broadcast stop command. In the case of the machine P, it is basically the same as the system polling for 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.
[0172]
FIGS. 21 and 22 are flowcharts showing specific operations of the selecting process (U17) of the repeater R as an example of the terminal device in the embodiment.
[0173]
When entering the selecting process (U17), AD, CM1, and PS stored in the RAM 341, RAM 342, and RAM 344 are moved to the RAM 371, RAM 372, and RAM 373, respectively.
[0174]
First, here, the microprocessor MPU3 determines whether or not the self-address of the repeater RP matches the received address AD (U401). If it is determined that the received address AD matches the received address AD (Y in U401), it is determined that the relay RP is designated, and the status information it has is returned to the fire receiver RE. Therefore, the following operation is performed.
[0175]
That is, in order to determine the contents of the selecting process, it is determined whether the received signal is a type information ID return command (CM = 00h) (U402), and if it is a type information ID return command (Y in U402) The type information ID and its own address are read from the ROM 32 and stored in the RAM 382 (U403). The address AD, command CM1, primary sum check code PS, own address DA, and return data Da stored in the RAM 371, RAM 372, RAM 373, RAM 381, and RAM 382 are read (U415 to U419), and the address AD, The number of active bits of the command CM1, the primary sum check code PS, its own address DA, and the transmission byte of the return data Da is counted (U420) to obtain a count value, and this count value is added to obtain an addition value (U421) ). Next, the added value is inverted to obtain an inverted value (U422). The most significant bit of this inverted value is deleted to obtain a secondary sum check code SS (U423). This secondary sum check code SS is stored in the RAM 383 (U424). Then, the self address DA, the return data Da, and the secondary sum check code SS stored in the RAM 381, RAM 382, and RAM 383 are sequentially transmitted from the signal transmitting / receiving unit TRX3 (U424).
On the other hand, if it is determined in U402 that the signal received by the microprocessor MPU3 is not a type information ID return command (N in U402), it is determined whether or not the received signal is a status information return command (CM1 = 01h). If it is determined (U404) and it is determined that it is a status information return command (CM1 = 01h), the status information is read out from the RAM 32 and stored in the RAM 382. The data is stored in the RAM 382 (U405). Thereafter, U415 to U424 are executed. The basic operation of U415 to U424 is the same as that described above except that the status information is sent as return data Da instead of its own type information ID to the fire receiver RE.
[0176]
On the other hand, in U404, it is determined 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), the fire signal receiving circuit FSR, The district acoustic control circuit LAC and the like are restored, and the process proceeds to U415. On the other hand, if it is not a fire recovery command (N in U406), it is determined whether or not the command CM1 is a storage recovery command (U408). If it is a storage recovery command (Y in S408), a fire signal The reception circuit FSR is restored (U409), and the process proceeds to U415. On the other hand, if the command is not a storage restoration command (N in S408), it is determined whether or not the command CM1 is a district sound stop command (U410), and if it is a district sound stop command (Y in U410). The district sound control circuit LAC is turned off (U411), and the process proceeds to U415. On the other hand, if it is not a district sound stop command (N in U410), it is determined whether or not it is an emergency broadcast stop command (U412). If it is an emergency broadcast stop command (Y in U412), emergency broadcast control is performed. The circuit BAC is turned off (U413), and the process proceeds to U415. On the other hand, if it is not an emergency broadcast stop command (N in U412), the process directly returns.
[0177]
In the point polling of the above embodiment, it is distinguished whether CM1 returns status information or type information ID among various data, and a group is specified by CM2, but this is not the case. It is also possible to distinguish whether to return status information or type information ID among various data by CM2 and to specify a group by CM1.
[0178]
In the system polling and selecting in the above embodiment, the command CM2 is not used. For example, the fire receiver RE sends a confirmation lamp turn-off command for turning off the confirmation lamp of the fire detector to the terminal device. In this case, the command CM1 may be sent as an instruction for controlling the confirmation lamp, and the command CM2 may be sent out together with the address AD and the primary sum check code PS as an instruction to turn off the lights.
[0179]
Furthermore, in the present embodiment, the selection for the repeater RP has been shown. However, in the case of a fire detector such as the photoelectric fire detector S, it is not controlled by the district sound stop instruction and the emergency broadcast stop instruction. In the case of the transmitter P, it 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.
[0180]
In the point polling of this embodiment, when receiving the return data D1 and the secondary sum check code SS sequentially from each terminal device from one group, the width of the slot for receiving the status information or the type information ID is: The intra-group terminal number m is made wider as it becomes larger. For example, FIG. 23 shows the slot width when point polling is performed for the group of group number 1. However, the slot width is increased so that the slot width increases from m = 0h to m = 10h. It is set. This is because the frequency of the oscillators of MPU1, MPU2, MPU3, and MPU4 used in fire receivers RE and terminal devices is not always the value specified in the product itself, and generally includes 1% error. Because it is.
[0181]
In this way, by giving each slot a spread, each return data D1 sent from the fire receiver RE and each terminal device due to an error in the frequency of each oscillator and each secondary sum check code SS are exchanged. Timing deviation can be absorbed.
[0182]
Furthermore, when entering the system process or selecting process, the AD, CM1, and PS of the RAM 341, RAM 342, and RAM 344 are moved to another RAM, but the contents (AD) of the RAM 341, RAM 342, and RAM 344 are not moved. , CM1, PS) may be used as they are in system processing and selecting processing.
[0183]
In the present 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 a primary addition code PS obtained by simply adding these are added. The terminal device sent out and called by polling simply adds the received AD, CM1, and CM2, and depending on whether or not 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. On the other hand, this terminal device receives the return data D1 to be returned to the fire receiver and the AD, CM1, and 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 receives the return data D1 received from the terminal device and the AD, CM1, CM2 returned to the terminal device. By comparing the second addition code obtained by simply adding PS with the secondary addition code SS received from the terminal device, the terminal device has successfully received the address code and instruction code sent from the fire receiver. The fire receiver may be able to recognize this.
[0184]
【effect】
Since the present invention is configured as in the above-described embodiment, when there are a large number of terminal devices in the group, there is an effect of quickly detecting a terminal device that has detected an abnormality, and each slot is spread. Thus, it is possible to absorb a difference in timing of transmission / reception of each return data and secondary sum check code transmitted from the fire receiver and each terminal device due to an error in the frequency of each oscillator.
[Brief description of the drawings]
FIG. 1 is a system diagram of disaster prevention equipment to which the 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 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 a terminal device in the embodiment.
FIG. 7 is a block diagram showing a repeater RP as an example of a 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 receiver RE in the embodiment.
FIG. 10 is a flowchart showing a specific operation of point polling in FIG. 9;
FIG. 11 is a flowchart showing a specific operation of point polling in FIG. 9;
FIG. 12 is a flowchart showing a specific operation of point polling in FIG. 9;
FIG. 13 is a flowchart showing a specific operation of system polling in FIG. 9;
FIG. 14 is a flowchart showing a specific operation of selecting in FIG. 9;
FIG. 15 is a flowchart showing a specific operation of selecting in FIG. 9;
FIG. 16 is a main flowchart of a repeater RP as an example of a terminal device in the embodiment.
FIG. 17 is a flowchart showing a specific operation of point processing of the relay PR in the embodiment.
FIG. 18 is a flowchart showing a specific operation of point processing of the transmitter P in the embodiment.
FIG. 19 is a flowchart showing a specific operation of point processing of the transmitter P in the embodiment.
FIG. 20 is a flowchart showing a specific operation of system processing of the relay PR in the embodiment.
FIG. 21 is a flowchart showing a specific operation of the selecting process of the relay PR in the embodiment.
FIG. 22 is a flowchart showing a specific operation of the selecting process of the relay PR in the embodiment.
FIG. 23 is a diagram illustrating a data width returned from the terminal device.
[Explanation of symbols]
Fire receiver as an example of RE receiver
S Analog fire detector
P transmitter
RP repeater
F On-off fire detector
B district sound equipment
G Gas leak detector
D Fire door as an example of controlled machine

Claims (1)

In a disaster prevention facility in which a plurality of terminal devices such as fire detectors, repeaters, transmitters and controlled devices are connected to a fire receiver, the plurality of terminal devices are grouped into a plurality of groups, and the fire receiver is Each group is called by sequentially specifying a group number, and the terminal device corresponds to the terminal number of each terminal device in each group when its own group number matches the group number received from the fire receiver. When the time slot accepts information from each terminal device belonging to one group, data such as status information or type information is sequentially returned to the fire receiver for each time slot, and a polling signal to the group is received. After a call is made and before a polling signal is sent to the next group, a plurality of time slots provided in sequence are opened. Disaster prevention facility, characterized in that the time is more slot width increases slowly.

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