JPH01159797A - Disaster prevention facility - Google Patents

Abstract

PURPOSE:To uniform the data acquisiting times of all the fire sensors and to accurately decide on a fire by outputting acquisition instructions all at once from a reception means to let respective fire sensors detect. CONSTITUTION:The receiver RE, prior to respective polling, transmits acquisition instructions all simultaneously to all the analog type fire detectors SE1-SEN to which it is to poll. Upon receiving the acquisition instructions, the sensors SE1-SEN detects the detection amount regarding the phenomenon of fire. Later, the detection amounts are transmitted to the receiver RE.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to disaster prevention equipment, and in particular, a system in which a receiving means such as a receiver or a repeater has a plurality of analog fire detectors connected to the receiving means. This relates to a disaster prevention system that polls and collects detected amounts related to fire phenomena.

[Prior art and its problems] - In disaster prevention equipment that uses a polling method, analog fire detectors connected to receiving means such as receivers or repeaters have different This is done by the control of a built-in timer or oscillator, or at its own timing as a trigger upon reception of its own address, which is a polling signal. In both cases, physical quantities such as smoke volume are converted into electrical signals at their own timing to detect so-called fire phenomena, so the polling time of the receiver and the timing of data acquisition in each fire sensor are very important. Therefore, the detection data will be acquired at different times among all the fire sensors. For this reason, the timing of detection of a fire phenomenon by a plurality of connected analog fire detectors and the timing of data collection to the receiving means are inconsistent.

In particular, if the receiver side performs many interrupt controls for equipment control during the polling period to collect data from the fire sensor, the data collection interval will vary significantly.
For example, if one polling time for fire sensor data collection is 4 seconds, if many interrupt controls are performed during that one polling period, the polling period will double to 8 seconds. It is also possible.

As a result, when making a fire judgment based on data collected from a fire sensor, the judgment method that has a fire judgment standard that processes time-related processes in particular has a 4-second cycle, but the actual The data that comes from the fire detector has the disadvantage that the time it takes to convert the physical quantity of the fire sensor into an electrical signal varies, resulting in a large error in the judgment itself.

In order to know the data acquisition time, it is conceivable to store the time at which data was acquired for each polling in the memory for each fire sensor, but in order to know this time on the receiver side, the time when the data was acquired together with the detection data can be stored. The data must also be sent back to the receiver, making the polling procedure cumbersome, and even in this case, the collected detection data is not at the same time and is not optimal.

[Means for Solving the Problems] Accordingly, an object of the present invention is to reduce the time it takes for a fire sensor to acquire detection data even if the polling time varies by performing device control, interrupt control, etc. It is about matching.

In order to achieve this object, according to the present invention, a receiving means such as a receiver or a repeater polls a plurality of analog fire detectors connected to the receiving means, and detects a detection result by each analog fire detector. In the disaster prevention equipment configured to collect detected amounts related to fire phenomena, the receiving means is configured to simultaneously collect the detected amounts for all of the analog fire detectors to be polled prior to each polling. Acquisition command sending means for sending an acquisition command is provided, and each of the analog fire detectors is provided with an acquisition command sent from the acquisition command sending means of the receiving means, and a means for determining whether or not the command has been received. and fire phenomenon detection means that operates to acquire the detected amount when the acquisition command determining means determines that the acquisition command has been received. provided.

[Operation] The receiving means (RE) such as a receiver or a repeater has the analog fire detector (SE, -8EN) that should be polled.
) is provided with acquisition command sending means (step 203) that sends out the detection amount acquisition command all at once prior to each polling, and each of the analog fire detectors is provided with acquisition command determining means (step 303) for determining whether or not an acquisition command sent from the acquisition command sending means has been received; Fire phenomenon detection means (step 304) is provided to obtain the detected amount.

In this way, the receiving means first outputs the acquisition command all at once, and each fire sensor detects the amount of detection related to the fire phenomenon at the time of receiving the acquisition command, so that subsequent information from the receiving means The detection data collected by the return command during polling is at the same time. In this way, since the data acquisition times of all fire sensors are always the same, this method is particularly effective when determining a fire based on the correlation with other fire sensors. becomes possible.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram for explaining the operation of the disaster prevention equipment according to an embodiment of the present invention, in which a plurality of fire sensors (analog fire detectors) SEI-9E are connected to the receiving fiRE.
N and a plurality of control repeaters CNI to CNK are shown connected. Controlled equipment (not shown) (such as a fire door, smoke damper, smoke exhaust damper, etc.) is connected to each control repeater.

In the receiver RE, MPUI is a microprocessor, ROM11 is a read-only memory for storing programs etc. that will be described later in the flowchart of FIG. A read-only memory, RAM 11, stores each address, an address map such as each address for the K repeaters CN, ~CN, and a control pattern (matrix) of the controlled equipment, and the RAM 11 is used for each fire sensor. This is a random access memory for storing detection data returned from a fire sensor, and has N areas for storing detection data for each fire sensor, and each area is a partition capable of storing data for a predetermined number of times. Or have segments.

The RAM 12 is a random access memory for storing time data, and has a predetermined number of memory cells for storing detection times corresponding to a predetermined number of detection data stored in each area of RAM II for storing detection data. It has several divisions or segments.

RAM13 is a working random access memory, TRX1 is a transmitting/receiving unit consisting of a serial/parallel, parallel/serial converter, a transmitting circuit, a receiving circuit, etc., and is connected to a signal line and also serves as a transmitting/receiving interface. It is connected to the microprocessor MPU 1 via IFII.

CL is a clock unit connected to the microprocessor MPU1 via the interface IF12, DP is a display unit connected to the microprocessor MPUI via the interface IF13, and OP is connected to the microprocessor MPUI via the interface IF14. This is the operation section.

In the fire sensors SE, ~SEH, the MPU2 is a microprocessor, the ROM21 is a read-only memory for storing programs, etc., which will be described later in the flowchart of FIG. 3, and the ROM22 is a self-address and discrimination pattern of various commands. RAM21 is a read-only memory for storing things such as
RAM22 is a random access memory for storing detection data; FS is a thermal type, ionization type, scattering type, dimming type, flame type, or gas type detection unit; A fire detection section AD consisting of an amplifier, a sample hold circuit, etc. is a fire detection section FS.
The analog/digital converter TRX2 converts the detected analog quantity into a digital quantity and supplies it to the microprocessor MPU2 via the detected data reading interface IF21. Microprocessor MP via
This is a transmitting/receiving unit connected to U2.

Although the internal configuration of the repeaters CN and -CN is not shown in Fig. 1, in the internal circuit of the fire sensor, the fire detection unit FS and analog
By connecting a controlled terminal instead of connecting the digital converter AD and using the interface IF21 as an interface for outputting control signals to the controlled terminal, the internal configuration of the fire sensor can be used almost as is inside the repeater. It can be configured as follows.

Figure 2 (1) Regarding the operation of the disaster prevention equipment shown in Figure 1
This will be explained using (2) and FIG. 3.

FIGS. 2(1) and 2(2) are flowcharts for explaining the operation of the receiver, and FIG. 3 is a flowchart for explaining the operation of the fire sensor.

In Fig. 2 (1) and (2), first, following the initial setting (step 201), the sensor number n to be polled is set to 0 (step 202), and a data acquisition command is sent to all sensors. (Step 203), this data acquisition command is sent all at once, and when each fire sensor receives this data acquisition command, it reads the detection data from the fire detection unit F'S all at once and randomly outputs the data as described below.・The receiver R stores the read detection data in the access memory, but does not return the read detection data at this stage.
In E, next, the sending time of the acquisition command is determined by the interface I.
Read from the clock section CL via F12 (step 20
4) The sending time of the data acquisition command is stored in the first address section or segment of the time data storage RAM 12, and the stored sending time is shifted one address at a time (step 205).

Next, according to the process from step 209, detection data is collected and fire judgment processing is performed in order starting from the first fire sensor. However, if there is an interruption such as a test on the fire sensor or control of a controlled terminal, etc. , first performs necessary interrupt processing, and then performs data collection from the fire sensor and fire determination processing.

In other words, if there is one interrupt input (Y in step 207)
ES), after performing necessary interrupt processing, for example, sending a control command to the repeater CN (step 208),
If there is no data return command (No in step 207), a data return command is sent to the n-th fire sensor (
Step 209).

If data is returned in response to the data return command (YES in step 210), the RAM II for storing detected data
The received data is stored in the section (or segment) at the start address of the nth area, and the stored data stored in each section (or segment) in the first area is stored at one address in the first area. Step by step step 2
11).

Thereafter, fire determination processing is performed based on the detection data stored in the RAMII (step 212), and in the case of a fire (YES in step 213), the fire district is displayed (step 214) and the detection data is stored. for RA
The changing state of the fire is determined and displayed from the detection data stored in each division (or segment) of each area of M11 and the time data stored in each division (or segment) of time data storage RAM 12 ( Step 21
5).

Then, by incrementing n by one (step 206)
, steps 207 to 2 for the next numbered fire sensor.
Sending and reading similar data return commands up to 15,
Fire determination processing is performed, and then, when n reaches the total number N of fire sensors (YES in step 216), that is,
When the reading of the detection data for all fire sensors and the fire determination process are completed, the process returns to step 202, and the next acquisition command is sent to each fire sensor at the same time (step 204).

In the flowchart showing the operation of each fire sensor in FIG. 3, first, after initial setting (step 301), if there is a received signal from the receiver RE (YES in step 302), it is determined whether it is an acquisition command or not. , a return instruction is determined.

If it is an acquisition command (YES in step 303)
, outputs a detection command to the fire detection section FS and detects the sensor.
The level is detected (step 304), and a conversion command is output to the analog-to-digital converter AD to convert the analog sensor level detected by the fire detection section FS into a digital quantity (step 305). - Store the digital detection data from the digital converter AD in the RAM 21 for storing detection data (step 306).

If the received signal from the receiver RE is a return command (YES in step 307), it is determined whether the received signal is from the self-address or not, and if it is from the self-address (step 307). 308: YES), reads the detected data from the detected data storage RAM 21 and receives it 11i.
It is sent to the RE (step 309).

In the flowchart shown in Fig. 3 above, when each fire sensor receives an acquisition command, it performs analog-to-digital conversion, but when it receives an acquisition command, it operates the fire detection unit FS and outputs its detection output. It is also possible to hold the address in a sample-and-hold circuit and perform analog-to-digital conversion when the self address is received in step 308.

[Effects of the Invention] As described above, according to the present invention, even if device-based (such as wholesale) interrupt processing is performed during the polling period, the data of the multiple analog fire detectors collected by the receiver side according to the return command is always collected. The information is obtained at the same time, so there is an effect that an accurate fire judgment can be made.Furthermore, this effect becomes even more remarkable when a fire judgment is made based on the correlation with other fire sensors.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing disaster prevention equipment according to an embodiment of the present invention, and FIGS. 2 (1) and (2) are flowcharts for explaining the operation of the receiving fiRE shown in FIG. FIG. 3 is a flowchart for explaining the operation of the fire sensor shown in FIG. 1. In the figure, RE is a receiver, ROM11 is a read-only memory for program storage, ROM12 is a read-only memory for address map storage, and RAMII is a read-only memory for storing address maps.
is a random access memory for sensing data storage, R
AM12 is a random access memory for storing time data, CL is a clock section, TRX1 is a transmitting/receiving section, SE, ~S
EN is a fire sensor, FS is a fire detection section, ROM21 is a read-only memory for storing programs, ROM22
is read-only for storing self-address discrimination patterns.
Memory, RAM21 is a random access memory for storing detected data, TRX2 is a transmitting/receiving unit, CN, ~CN
K is a control repeater. Map 2 (1)

Claims (4)

[Claims] (1) In disaster prevention equipment in which the receiving means polls a plurality of analog fire detectors connected to the receiving means and collects the detection amount related to the fire phenomenon detected by each analog fire detector. , the receiving means is provided with acquisition command sending means for sending an acquisition command for the detection amount to all of the analog fire detectors to be polled at the same time prior to each polling; Each of the sensors includes an acquisition command determining means for determining whether or not an acquisition command sent from the acquisition command sending means of the receiving means is received, and the acquisition command determining means determines whether the acquisition command is received. fire phenomenon detection means that operates to obtain the detected amount when the fire occurs. (2) The disaster prevention equipment according to claim 1, wherein the acquisition command sending means has a storage unit that stores the sending time of the acquisition command. (3) Claim 1, wherein the receiving means is a receiver.
Disaster prevention equipment as described in Section 2 or Section 2. (4) Claim 1, wherein the receiving means is a repeater.
Disaster prevention equipment as described in Section 2 or Section 2.