JPH0248795A - Fire alarm system - Google Patents

Abstract

PURPOSE:To process a receiver in a short time, to eliminate the delay of the fire detection and to direct the extra force to a higher deciding processing by collecting outgoing data from a fire sensor in a group controlled by a master sensor and sending a fire deciding result. CONSTITUTION:Respective group control sensors MS are provided with a data collecting means ROM14 to identify and collect data transmitted from a fire sensor SE in a group to control, a RAM11, a fire deciding means ROM12 to execute the fire decision based on the collected data, a ROM13, a RAM12 and a decided result sending means TRS11 to send the fire decided result to a receiving part RE. A master sensor MS monitors an analog data collecting instruction from a receiver RE, collects the analog data of respective sensors in charge to the RAM11 and simultaneously, sends the fire decided result due to the RAM12 for it and the fire decided result of the group as a whole to the receiver RE. Thus, the processing of the receiver is easy, in a short time and sufficient, and when the individual fire decision of the receiver is executed, the reliability of the system can be further improved.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is applicable to a receiving unit such as a receiver or a repeater, and a plurality of analog fire detectors or ordinary on/off type fire detectors connected to the receiving unit. This invention relates to a fire alarm system consisting of a fire detector.

[Prior Art and Related Points] In a fire alarm system consisting of a fire sensor, that is, a fire detector and a receiver, the receiver sequentially polls each sensor and collects sensor data at that time. Based on the collected data, each sensor detects changes in the environmental conditions in which it is installed and outputs abnormality signals and the like.

In this case, the receiver processes the sensor data, compares it with the fire judgment criteria, and outputs an abnormal signal if they match, which makes the receiver's content processing program complex.
When a large number of sensors are connected, the processing time becomes longer and there is a possibility that fire detection may not be possible within a certain period of time.

In addition, when multiple sensors are installed in one compartment, this tendency becomes even more pronounced in standard judgments that detect fires based on the correlation of data between these sensors.
This increases the burden on the receiver.

[Means for Solving the Problems] Therefore, according to the present invention, a receiving section such as a receiver (RE) or a repeater, and an analog or on/off type receiving section connected to the receiving section (RE) are provided. In a fire alarm system equipped with a plurality of fire detectors (SR), the plurality of fire detectors are divided into groups, and each group has a group management sensor that also has a function to manage the fire detectors in the group. A container (S++~5NI) is provided,
Each of the group management sensors includes a data collection means for identifying and collecting data transmitted from the fire detectors in the group being managed.Steps 504 to 5
06, ROM 14, RAMII) and a fire determination means (step 508.512.524, RO) for determining a fire based on the data collected by the data collection means.
M12, ROM 13, RAM 12); and judgment result sending means (step 527) for sending the fire judgment result by the fire judgment means to the receiving section. be done.

The fire determination means of the group management sensor (step 508
．． 512.524, ROM12, ROM13, RAM
12) includes individual fire determination means (steps 508 and 524, ROM
12, RAM 12) and group-wide fire determination means (Stemp 512, ROM13, R
It is advantageous to include AM12).

The receiving unit also includes means (step 403, ROM 2) for sending an analog data collection command to the analog fire detector, and means for sending at least a fire judgment result collection command to the group management sensor. means (step 41
0, ROMB).

Furthermore, the receiving section may include means for confirming the fire determination result sent by the determination result sending means of the group management sensor.

[Example] An embodiment of the present invention will be described below.

FIG. 1 shows an example of the system configuration of the present invention, in which all N fire sensors are divided into M groups: S7 group, S7 group, ~SM group, and 81 groups include sensor S
11. S1□, ~S1 has 1 sensor, 82 group has sensors S21, S22, ~S2 has 2 sensors, etc., and S, group has Senna SM1. SN2
, ~5NKN K.

Each sensor is shown included. One of each group is a mask sensor, and in this example, 8
It is assumed that the sensor S in the 1st group, the sensor S21 in the 82nd group, and the SMI in the SX group are mask sensors, and represent each group.

The functions of each mask sensor are as follows.

The receiver issues an analog data collection command by sequential polling to all N connected sensors, and each sensor converts the physical location of the fire phenomenon detected by this command into electrical data and converts it into analog data. It is sent back to the receiver by sending it out to the transmission line or power/signal line. The receiver stores the returned data in a RAM or the like as necessary.

The master sensor in each group monitors or supervises the analog data sent out on the transmission line from each sensor in response to the receiver's analog data collection commands, which is transmitted from the receivers in each group to the master sensor. If it is sent analog data, it is stored in the analog data storage area RAMII of the assigned sensor within the mask sensor.

It is also possible to determine whether or not the analog data transmitted from the sensor assigned to the mask sensor is by registering the addresses of all assigned sensors in the mask sensor in advance. In the example, the address code is divided into the first group part and the second sensor number part, as shown in the subscript N and N of each sensor SMK shown in Figure 1, and the first group part of the sensor address is I'm trying to identify it.

The mask sensor monitors all the data of the assigned sensor and stores it in the assigned sensor's analog data storage area RAMI.
After storing the information in I, the fire judgment process begins. The processing details are as follows.

(a) Analog data storage area RAM of the assigned sensor
The analog data of each individual sensor in II is compared with the fire judgment standard, and if there is a sensor that matches, a bit is set at the corresponding sensor location in the data format shown in FIG. This process is carried out by reading the data of each sensor from the storage area RAM II in the mask sensor,
In the data format 1- in FIG. 2, which is performed for all the sensors in charge, the address of the mask sensor of the group is stored in the first part MA. second part EG
is for storing the judgment results for the group as a whole based on the data of all sensors in the group, and the third and subsequent parts E
5, E2, .

(b) Combine the data of each sensor in the group and compare it with the fire judgment criteria for the location of the group S1, and if they match, set a bit indicating the group.

When the receiver finishes collecting analog data for all sensors, it then issues a result collection command to the mask sensor representing each group.
) is converted into the data format shown in FIG. 2 and sent back to the receiver.

The receiver receives data from the mask sensor and displays its contents. In addition, depending on the need, the analog data of each sensor is read out from its own RAM and compared.
It is also possible to compare the fire judgment criteria defined in the receiver and display this content if they match.

By doing this, the mask sensor monitors the analog data collection command from the receiver and collects the analog data of each assigned sensor, and at the same time receives the fire judgment result for it and the fire judgment result for the entire group. Since the data is sent to the receiver, processing at the receiver is simple and quick.
Furthermore, if a fire signal is generated from a mask sensor, the reliability of the system will be further improved if the receiver also makes its own fire determination as described above.

There are various fire judgment criteria for individual sensors in mask sensors, such as fixed level, differential method, integral method, and difference method, depending on the type of sensor such as thermal type or smoke type. As for the fire judgment criteria for the group as a whole, there is a method to generate a fire signal as a group when similar fire signals are generated based on the judgment and determination results of individual sensors, and a method to generate a fire signal as a group, and analog data of adjacent sensors. One possible method is to make a determination based on the total amount of . Also, when sending the judgment results for the entire group back to the receiver, do not use the mask/senna address data format shown in Figure 2;
If it is registered in the receiver and communicated using a certain address, only one command is required from the receiver.

FIG. 3 is a block circuit diagram showing a fire alarm system to which an embodiment of the present invention is applied. In the figure, RE is a receiver, and SE is connected to the receiver RE via a pair of power and signal lines L. ``A plurality of analog fire detectors MS are connected to a receiver RE via a pair of power supply/signal lines. In addition, in FIG. 3, only one fire alarm SE and one master sensor MS are shown.

In the receiver RE, the MPU is a microprocessor, R
OM1 is a program storage area, ROM2 is a sensor address storage area where N sensor addresses are fixedly stored, and ROM3 is a mask sensor address memory where M mask sensor addresses are fixedly stored! area, RAM1
is a senna analog data storage area that stores sensor analog data; RAM2 is a judgment result storage area that stores sensor judgment results for each master sensor;
RAM3 is a work area, and TRX1 receives data via the transmission interface IFI! The signal transmitter/receiver unit, DP, connects the RRE to the transmission line, that is, the power supply/signal line, and the microprocessor M via the display interface IP2.
The display connected to the PUI side, OP, connects to the microprocessor MPU1rs via the input interface IF3.
This is an operation unit connected to the .

In each mask Senna MS, MPUII is a microprocessor, ROMII is a program storage area, and RO
M12 is a storage area for individual sensor judgment criteria where the judgment criteria for each sensor is individually stored, ROM13 is a group specific standard storage area where the judgment criteria for the group is stored, and ROM14 is a storage area for assigned sensor addresses. , RAM 11 is an analog data storage area for the sensor in charge, RAM 12 is a storage area for fire judgment results, RAM 13 is a work area,
RX11 is a signal transmitting/receiving unit that connects the mask sensor MS to the transmission line via the transmission interface IFII, and FSII is a signal transmitting/receiving unit that connects the mask sensor MS to the transmission line via the transmission interface
The fire phenomenon detection means DIPll is a dip switch for setting the address of the mask sensor, and the data is sent to the microprocessor MPUII via the address input interface IF13. connected to the side.

In each sensor SE, MPU21 is a microprocessor, ROM21 is a program storage area, RAM21 is a work area, and TRX21 is a transmission interface IF.
FS21 is a signal transmitting/receiving unit that connects the chemical sensor SE to the transmission line L via 21; FS21 is a fire phenomenon detection means that provides analog data of physical quantities based on the fire phenomenon to the microprocessor MPU21 side via the physics 1 conversion interface IF22; DIR21 is a dip switch for setting the address of the sensor, and is connected to the microprocessor MPU21 via an address input interface IF23.

The above operation shown in FIG. 3 will be explained below with reference to FIG.

FIG. 4 is a flowchart for explaining the operation of the receiver RE of the part related to the present invention of the program stored in the storage area ROM1, and FIG.
6 is a flowchart for explaining the operation of each mask sensor MS of a part related to the present invention of a program stored in M11, and FIG.
1 is a flowchart for explaining the operation of each sensor SE in a part related to the present invention of a program stored in FIG.

In FIG. 4, the receiver RE sequentially polls all N sensors based on the sensor address map stored in the storage area ROM2. Send an analog data collection command to N) (step 403), and if there is a return (Y) in step 404, read the analog data SLV (step 405) and store it in the sensor analog data storage area RAM1. (step 406).

When the analog data SLV for all the sensors of N1151 have been collected in the storage area RAM1 in this way (step 407), next, based on the mask sensor address map stored in the storage area ROM3, the The 0mth mask sensor (w
In the collection operation for +-1 to M), a result collection command is first sent to the m-th mask sensor (step 410), and judgment is made from the m-th master sensor in the data format shown in Figure 2. When the results are returned (Y in step 411), and Resul
t in the storage area RAM2 (step 412
), and if the fire bit is set in the result Re5ult (Y in step 413), the contents are displayed on the display DP.
(step 414) and moves to the next collection operation (%) for the master sensor from step 410.

In this way, when it is determined that the collection operation for all M mask sensors has been completed (Y in step 415), the process returns to the beginning and the polling operation from step 401 is repeated.

In FIG. 5 explaining the operation of the mask sensor MS,
If there is a transmission interrupt (Y in Stella 15o1), the transmission data is fetched (step 502), and whether the address associated with the transmission data is the own address set in the dip switch DIP II (step 503) or stored. Address information of the sensor responsible for the mask sensor stored in the area ROM 14 step 504);
A determination is made.

If it is determined that the address is neither the own address nor any of the K assigned sensor addresses (N in step 503 and N in step 504), the process returns to step 501 and waits for the next interrupt.

If it is determined that it is the address of one of the assigned sensors that has KI[1 (Y in step 504), it is an address associated with a command from the receiving 1llRE, or an address associated with outgoing data from the assigned sensor side. It is determined whether the address is an address (step 505), and if it is determined that the address is associated with f1 to the transmission data from the sensor side (Y in step 505), it corresponds to the address of the transmission sensor in the storage area RAMII. The received analog data SLV is stored in the location where the received analog data SLV is stored (step 506).

Then, after incrementing the variable k (k-1 to K) by one (Stella 7507>), among the judgment criteria of the individual sensors stored in the storage area ROM12, t constant criteria for the transmitting sensor are read, and the judgment is made. The standard is compared with the analog data SLV currently stored in the storage area RAMII (step 508), and if it is determined that the analog data and the judgment standard match as a result of the comparison (step 50).
8 Y), a location corresponding to the address of the transmitting sensor in the storage area RAM 12 having a data format as shown in FIG. 2 (any one of El, E2, ... EK in FIG. place) (step 509), and then the value of the variable is set to the total number of assigned sensors K.
It is determined whether or not it has been reached, and if it has not been reached (N in step 510), the process returns to step 501 to collect further data from the assigned sensor.

If it is determined that data has been collected from all the sensors in this way (Y in step 510), all the analog data of the sensors in charge stored in the storage area RAMII is read (step 511). )
, all the data are compared with the fire determination criteria as a group stored in the storage area ROM13, which is in charge of the master sensor. If they match (step 5
12 Y) 1. Set the corresponding bit in the storage area RAM 12, that is, set the bit in EG in the data format of FIG. 2, and if they do not match (Step 5
12N), reset the bits of EG (step 5)
14). Then, a determination completion flag L indicating that all determination processes in the group have been completed is set to 1 (step).
, return to step 501.

If it is determined in step 503 that it is the own address (Y in step 503), the captured transmission data is sent from the receiver RE in step 403 in FIG.
A determination is made whether it is the analog data collection command at step 410 or the result collection command at step 410 (step 520).

If it is an analog data collection command (step 5
20 Y), reads the analog data SLV from the fire phenomenon detection means FSII via the interface IF12 (step 521), and reads the dip switch D.
By writing the self-address and analog data SLV set in IPII to the interface IFII, they are transmitted to the transmission line L via the signal transmitting/receiving unit TRXIL (step 522), and the analog data storage area RAMII of the sensor in charge is The corresponding analog data SL is placed in the location corresponding to the corresponding master sensor address.
V is stored (step 523).

Next, among the individual sensor judgment criteria stored in the storage area ROM 12, the judgment criteria for the self and the storage area R
Compare all the analog data SLV stored in the AMII, and if they match (Y in step 524), the location corresponding to the self address in the storage area RAM 12, that is, in the case of this embodiment, the data format shown in FIG. A fire bit is set at E, which is the location for the mask sensor at (step 525).

If it is determined in step 520 that it is a result collection command (N in step 520), a determination end flag L is set, indicating that the collection and determination of analog data from all the sensors in charge have been completed. It is determined whether or not L=1. For example, if the determination processing result in step 512 for determining fire as a group is not yet available due to the calculation being in progress, the operation of setting flag L in step 515 has not been performed yet, that is, L≠1 (N at step 526), the process returns to step 501 and waits for the next transmission interrupt. Note that here, when it is determined that L=1, there is no response to the receiver RE. However, it is also possible to send a signal to the reception 1fiRE indicating that L=1 is not the case.

L-] (Y in step 526), the self-address set in the dip switch DIP II and the entire address written in the memory area RAM 12 in steps 509, 513 and 525 are By writing the data format as shown in FIG. 2 with the judgment result to the interface IFII,
Step 527 to send to the transmission line L via XII.
), thus the return is performed in response to the result collection command from the receiver RE. After that, variable k and flag I-
is cleared (step 528), and the process returns to step 501 to wait for the next interrupt.

In FIG. 6, which describes the operation of each sensor SE, if there is a transmission interrupt (Y in step 601), the transmission data is taken in (step 602), and the address sent along with the transmission data is , dip switch DIR21
(step 603). As a result of the comparison, if it is determined that the address matches the own address (Y in step 603), the transmitted data is
It is determined whether the analog data collection command in step 403 of FIG. 4 is sent from the receiver RE (
Step 604), if it is determined that it is an analog data collection command (Y in step 604), the detection content by the fire phenomenon detection means FS21, that is, the analog data SLV is read via the interface IF22 (
Step 605). Then, by sending the analog data SLV and self-address to the interface IF21 via the write signal transmitting/receiving unit TRX21 over the transmission line (step 606), the analog data is returned to the receiving fiRE.

[Effects of the Invention] As described above, according to the present invention, the group control sensor, that is, the mask
The sensor collects the transmitted data from the fire sensors in the group it manages, makes a fire judgment, and sends the fire judgment result to the receiver, so the processing at the receiver is simple and takes a short time. This eliminates the problem of delays in fire detection, and has the effect of allowing the receiver to use its remaining power for more advanced judgment processing.

[Brief explanation of the drawing]

FIG. 1 is a diagram conceptually showing the configuration of a group of fire alarm devices according to the present invention, and FIG. 2 is a diagram showing the data format sent from the mask sensor MS to the receiving fiRE.
FIG. 3 is a block circuit diagram showing a fire alarm device according to an embodiment of the present invention, FIG. 4 is a flowchart for explaining the operation of the receiver RE shown in FIG. 3, and FIG. Flowcharts 1 to 6 for explaining the operation of the mask sensor MS of FIG. 4 are flowcharts for explaining the operation of the sensor, that is, the fire detector SE of FIG.
In the figure, RE is the receiver, MS is the mask sensor or group management sensor, SE is the fire detector, ROM2 is the sensor address storage area, ROM3 is the mask sensor address storage area, and RAM1 is the sensor analog data. Storage area: RAM2 is a judgment result storage area, ROM12 is an individual sensor judgment criteria storage area, ROM13 is a group specific standard storage area, ROM14 is a responsible sensor address storage area, RAMII is an analog data storage area for the responsible sensor. Fire judgment result storage area, DrPll
and DIP21 are dip switches for address setting, and FSll and FS21 are fire phenomenon detection means. Patent applicant Nomi Disaster Prevention Industry Co., Ltd. Agent
Diagram 2

Claims (4)

[Claims] (1) In a fire alarm system equipped with a receiving section and a plurality of analog type or on/off type fire detectors connected to the receiving section, the plurality of fire detectors are divided into groups, and each group is is equipped with a group management sensor that also has the function of managing the fire detectors within the group, and each of the group management sensors has the following functions: a fire determination means for determining a fire based on the data collected by the data collection means; and a determination result sending unit for transmitting the fire determination result by the fire determination means to the receiving unit. A fire alarm device characterized by comprising means and. (2) The fire determination means of the group management sensor includes an individual fire determination means for determining a fire for each fire detector in the group based on the data collected by the data collection means, and an individual fire determination means for determining a fire for each fire detector in the group, based on the data collected by the data collection means. 2. A fire alarm system according to claim 1, comprising group-wide fire determination means for determining a fire. (3) The receiving unit includes means for sending an analog data collection command to the analog fire detector, and means for sending at least a fire determination result collection command to the group management sensor. A fire alarm device according to claim 1 or 2. (4) The fire alarm according to any one of claims 1 to 3, wherein the receiving unit has means for confirming the fire judgment result sent out by the judgment result sending means of the group management sensor. Device.