JP7440207B2 - Fire receiver and fire alarm system - Google Patents

Description

The present invention relates to a fire receiver connected to a LAN and a fire alarm system equipped with the fire receiver.

2. Description of the Related Art Conventionally, there is a fire alarm system in which a plurality of fire receivers are connected via a LAN. Each fire receiver is connected to a detector that detects fire and controlled equipment such as district acoustics and smoke prevention equipment that are linked to alarms from the detectors. In the fire alarm system, fire detection information is shared among a plurality of fire receivers connected via a LAN (for example, see Patent Document 1).

Japanese Patent Application Publication No. 11-328557

In the system described in Patent Document 1, interlocking between the sensor and the controlled device, in which the controlled device operates in response to an alarm from the sensor, is performed for each fire receiver. That is, the detector and the controlled device could not be linked between different fire receivers.

Here, buildings in which distributed fire alarm systems having a plurality of fire receivers are installed are becoming larger or more complex. As buildings become larger or more complex, controlled equipment such as smoke vents, smoke exhaust fans, and fire doors that are to be operated in series may be connected to different fire receivers. Furthermore, as buildings become more complex, a sensor connected to one fire receiver and a controlled device connected to another fire receiver may be installed in physically close positions. In such a case, it may be desirable to link some of the sensors connected to one fire receiver with some of the controlled devices connected to other fire receivers. However, in conventional fire alarm systems, the interlocking of controlled devices in response to detector alarms is done on a per-fire receiver basis. could not be linked.

The present invention has been made against the background of the above-mentioned problems, and provides a fire receiver and a fire alarm system in which controlled equipment can be linked in response to alarms from detectors between different fire receivers. be.

The fire receiver according to the present invention is a fire receiver to which a sensor and a controlled device that is controlled in conjunction with the alarm of the sensor is connected, and is connected to other fire receivers via LAN. a communication interface; a storage unit that stores data in which a first condition, a second condition, and a controlled device to be linked are linked when the first condition and the second condition are satisfied; , a control unit, and the first condition includes information specifying the sensor connected to a first fire receiver that is either one of the own fire receiver and the other fire receiver. is set, and the second condition includes information specifying the sensor that is connected to a second fire receiver different from the first fire receiver among the own device and the other fire receiver. information for identifying the controlled device connected to the self-device is set in the interlocking controlled device, and the control unit is configured to identify the sensor connected to the self-device. When an alarm is triggered, if the sensor that triggered the alarm is set to the first condition or the second condition, the sensor indicates that the first condition or the second condition for which the alarm was set is satisfied. information indicating that the first condition or the second condition is met is sent to the LAN via the communication interface, and information indicating that the first condition or the second condition is satisfied is received via the communication interface, When both of the two conditions are satisfied, the linked controlled device associated with the first condition and the second condition that are satisfied is operated.
Further, the fire alarm system according to the present invention is provided with a plurality of fire receivers to which a sensor and a controlled device that is controlled in conjunction with the alarm of the sensor are connected, and a plurality of fire receivers are provided. The fire alarm system is a fire alarm system in which a plurality of fire receivers are connected to each other via a LAN, and each of the plurality of fire receivers receives information specifying a sensor connected to the fire alarm set in a first condition, and information set in a second condition. information that identifies the sensor connected to the own machine , and the controlled device connected to the own machine that is set as the interlocking destination when the first condition and the second condition are satisfied. The plurality of fire receivers stores data associated with information , and when the fire receiver connected to the fire receiver fires an alarm, the fire receiver sets the fire receiver to the first condition. Or, if the second condition is set, the sensor sends information indicating that the first condition or the second condition is satisfied to the LAN, and the first condition or the second condition is satisfied. When information indicating that two conditions are satisfied is received via the LAN, and both the first condition and the second condition are satisfied, the information is associated with the first condition and the second condition that have been satisfied. The controlled device that is linked is operated.

According to the present invention, it is possible to link controlled devices in response to alarms from sensors between different fire receivers. In addition, since the fire receiver will interlock the controlled equipment connected to itself when both the first and second conditions are met, flexible interlocking operations can be achieved even in larger or more complex buildings. It can be carried out.

1 is a system diagram of a fire alarm system 100 according to Embodiment 1. FIG. 1 is a functional block diagram of a fire receiver 10 according to Embodiment 1. FIG. It is a figure explaining an example of the zone setting table which fire receiver 10 and main repeater 20 concerning Embodiment 1 have. FIG. 2 is a diagram illustrating an example of interlocking settings using the first common zone AND-IP set in the fire alarm system 100. FIG. 3 is a diagram illustrating an example of interlocking settings using a second common zone IP set in the fire alarm system 100. FIG. 3 is a diagram illustrating an example of interlocking settings of the first common zone AND-IP stored in the fire receiver 10 and the main repeater 20. FIG. FIG. 2 is a diagram illustrating an example of the operation of the fire receiver 10 and the main repeater 20 according to the first embodiment.

Hereinafter, a fire receiver and a fire alarm system according to the present invention will be explained with reference to the drawings. The present invention is not limited to the following embodiments, and can be variously modified without departing from the spirit of the present invention.

Embodiment 1.
FIG. 1 is a system diagram of a fire alarm system 100 according to the first embodiment. As shown in FIG. 1, in a distributed fire alarm system 100, a fire receiver 10 as a host device and a main repeater 20 are connected via a LAN (Local Area Network) 1. Although a plurality of main repeaters 20 are illustrated in FIG. 1, only one main repeater 20 may be connected to the LAN 1. The LAN 1 is a communication network for sharing information between the fire receiver 10 and the main repeater 20. Each of the fire receiver 10 and the plurality of main repeaters 20 is assigned an individual node number, and is uniquely identified in the fire alarm system 100. A sensor S and a controlled device that is controlled in conjunction with the alarm of the sensor S are connected to each of the fire receiver 10 and the plurality of main repeaters 20 via a signal line 3. . In this embodiment, the sensor S and the controlled device may be collectively referred to as a terminal device. The controlled device includes, for example, any one of an alarm device, a smoke prevention device, and a signal repeater. In the example of FIG. 1, a district acoustic device B and a smoke prevention device ER are shown as controlled devices. The sensor S has a sensor that detects a physical phenomenon caused by a fire, such as infrared radiation, ultraviolet radiation, or combustion gas, and outputs a detected value according to the physical phenomenon caused by the fire. The warning device is, for example, a device that outputs an acoustic warning such as a district sound device B or a speaker, or a light warning device that outputs a visual warning such as a flashlight. The smoke prevention device ER is, for example, a fire door, a shutter, or the like.

The fire receiver 10 and the main repeater 20 monitor and control terminal devices connected to each other via the signal line 3. Further, fire information collected from terminal devices is transmitted and received between the fire receiver 10 and the main repeater 20 via the LAN 1. Thereby, fire information is shared between the fire receiver 10 and the main repeater 20. Fire alarm system 100 is installed, for example, in a building having multiple floors. More specifically, the fire receiver 10 is placed on the first floor, and each of the plurality of main repeaters 20 is distributed on each floor above the second floor, and monitors the monitoring area of the floor where it is placed. The terminal device is installed on the same floor as the connected fire receiver 10 or main repeater 20. Note that the installation example of the distributed fire alarm system 100 described here is one example, and the fire receiver 10 and the plurality of main repeaters 20 may be distributed and arranged in different buildings. The main repeater 20 has the same function as the fire receiver 10 in that it controls the controlled equipment based on the alarm from the sensor connected to itself, and corresponds to the fire receiver of the present invention. . The fire receiver 10 and the main repeater 20 are assigned node numbers #1 to #4.

Each terminal device connected to the fire receiver 10 and the main repeater 20 is assigned an individual terminal address AD. The fire receiver 10 and the plurality of main repeaters 20 each uniquely identify the terminal device connected to itself by the terminal address AD. In FIG. 1, for example, the main repeater 20 #4 has a sensor S assigned addresses AD1, AD2, AD15, and AD16, a district sound device B assigned addresses AD3 and AD17, and an AD45 address. A smoke prevention device ER to which an address has been assigned is connected.

Further, the terminal devices connected to the fire receivers 10 or the main repeater 20 of #1 to #4 are grouped. A plurality of terminal devices connected to one fire receiver 10 or main repeater 20 are linked in groups. This group is called Zone Z. For example, focusing on the terminal devices connected to the main repeater 20 #4, the terminal devices AD1, AD2, and AD3 are set in zone Z1, the terminal devices AD15, AD16, and AD17 are set in zone Z7, and the terminal devices AD15, AD16, and AD17 are set in zone Z12. Terminal devices AD1 and AD45 are set. For example, when the sensor S of AD1 connected to the main repeater 20 of #4 issues an alarm, the main repeater 20 of #4 activates the smoke control of AD45, which is set in zone Z12 like the sensor S of AD1. Operate the device ER. Furthermore, since the sensor S of AD1 also belongs to zone Z1, when the sensor S of AD1 issues an alarm, the main repeater 20 of #4 Operate district sound device B. In this way, in conjunction with the alarm from the sensor S, the controlled equipment connected to the same fire receiver 10 or main repeater 20 as the sensor S operates.

Furthermore, there are a first common zone AND-IP and a second common zone IP as groups in which terminal devices connected to the fire receiver 10 and any two or more of the plurality of main repeaters 20 are linked. . In the example of FIG. 1, in the first common zone AND-IP1, the sensor S of AD1 connected to the main repeater 20 of #4 and the smoke prevention device ER of AD45 are connected to the main repeater 20 of #3. The sensor S of AD1 and the smoke prevention device ER of AD45, the sensor S of AD1 and AD2 connected to the fire receiver 10 of #1, and the district sound device B of AD3 are set. Also, in the second common zone IP2, the sensors S of AD15 and AD16 connected to the main repeater 20 of #4 and the district sound equipment B of AD17, and the AD15 and AD16 connected to the main repeater 20 of #3 A sensor S of , and a district sound device B of AD17 are set.

FIG. 2 is a functional block diagram of the fire receiver 10 according to the first embodiment. The fire receiver 10 includes a display section 11, an operation section 12, a communication interface 13, a terminal interface 14, a control section 15, and a storage section 16. The display unit 11 includes, for example, a liquid crystal display, and displays information regarding the alarm of the sensor S and information regarding the operation of the controlled device. The operation unit 12 includes operation buttons, a keyboard, a touch panel, etc. that accept operation input from the user to the fire receiver 10. The communication interface 13 is a communication interface circuit for communicating with the main repeater 20 via the LAN 1. The communication interface 13 converts the fire information output from the control unit 15 according to the communication protocol used in the LAN 1. Here, the communication interface 13 has a memory that stores the LAN address of the main repeater 20 connected to the LAN 1. The communication interface 13 outputs the fire information converted according to the communication protocol to the LAN address of the main repeater 20 as the output destination. The terminal interface 14 is a communication interface circuit for transmitting and receiving signals to and from a terminal device connected via the signal line 3.

The control unit 15 includes a CPU (Central Processing Unit), a memory, and an input/output port, and controls the entire fire receiver 10 by the CPU executing a program stored in the memory. The storage unit 16 is a memory that stores data related to a zone setting table and interlocking, which will be described later.

The main repeater 20 differs from the fire receiver 10 in that it does not include the display section 11 of the configuration of the fire receiver 10 shown in FIG. However, the other configurations are similar to the fire receiver 10 shown in FIG. 2.

FIG. 3 is a diagram illustrating an example of a zone setting table included in the fire receiver 10 and the main repeater 20 according to the first embodiment. FIG. 3 exemplifies the zone setting table that main repeater 20 #4 in FIG. 1 has. The zone setting table is stored in the storage unit 16. The zone setting table is a table that associates the terminal address AD of the terminal device connected to the main repeater 20 #4 with the zone Z, the first common zone AND-IP, and the second common zone IP. For example, as shown in FIG. 1, zones Z1 and Z12 and a first common zone AND-IP1 are set in the sensor S of AD1.

The zone setting table is input through the operation unit 12 and stored in the storage unit 16. Alternatively, the zone setting table is transferred from an external terminal such as a personal computer connected to the main repeater 20 and stored in the storage unit 16.

In FIG. 3, the zone setting table of the main repeater 20 of #4 is illustrated, but the main repeaters 20 of #3 and #2 and the fire receiver 10 of #1 also have the zone setting table as shown in FIG. are stored in each storage unit 16.

FIG. 4 is a diagram illustrating an example of interlocking settings using the first common zone AND-IP set in the fire alarm system 100. In the first common zone AND-IP set in the fire alarm system 100 of this embodiment, the first condition, the second condition, and the interlock destination are associated, and the first condition and the second condition are associated with each other. When both conditions are satisfied, that is, when the AND condition is satisfied, the linked controlled device operates. For example, information specifying the sensor S is set in the first condition and the second condition, and the conditions are satisfied when the sensor S issues an alarm. Information specifying a sensor in addition to the sensor S may be set as the first condition and the second condition, and in this case, for example, the condition is satisfied when the output value from the sensor exceeds a threshold value.

Next, a specific example of setting the first common zone AND-IP will be explained. As shown in FIG. 4, in the first common zone AND-IP1, the first condition is that the AD1 of the sensor S connected to the main repeater 20 of #4 and the fire receiver 10 of #1 are connected to the first common zone AND-IP1. AD1 of the sensor S is set. As the second condition, AD1 of the sensor S connected to the main repeater 20 #3 and AD2 of the sensor S connected to the fire receiver 10 #1 are set. As interlocking destinations, AD45 of the smoke prevention device ER connected to the main relay 20 of #4, AD5 of the smoke prevention device ER connected to the main relay 20 of #3, and the fire receiver #1. AD3 of district audio equipment B connected to 10 is set.

In the fire alarm system 100, when the addresses of multiple terminal devices are set in the first condition as in the first common zone AND-IP1 in FIG. 4, an alarm is issued from any one terminal device. If there is (that is, an OR condition), the first condition is satisfied. Additionally, if the addresses of multiple terminal devices are set in the second condition, the second condition will be satisfied if an alarm is issued from any one terminal device (i.e., OR condition). . Note that any number of terminal devices may be set in the first condition and the second condition. Further, in this embodiment, an address is used as the first condition, the second condition, and information for specifying the linked terminal device, but information other than the address may be used as long as it is information that can specify the terminal device. Good too.

FIG. 5 is a diagram illustrating an example of interlocking settings based on the second common zone IP set in the fire alarm system 100. In the second common zone IP set in the fire alarm system 100 of this embodiment, the first condition and the interlocking destination are associated, and when the first condition is satisfied, the controlled device of the interlocking destination operates. do. For example, information specifying the sensor S is set as the first condition, and the condition is satisfied when the sensor S issues an alarm. Information specifying a sensor in addition to the sensor S may be set as the first condition, and in this case, for example, the condition is satisfied when the output value from the sensor exceeds a threshold value. Any number of terminal devices may be set as the first condition. Further, in this embodiment, an address is used as the first condition and information for specifying the interlocking destination terminal device, but information other than the address may be used as long as it is information that can specify the terminal device.

Next, a specific example of setting the second common zone IP will be described. As a first condition, in the second common zone IP1 shown in FIG. AD1 and AD2 of the sensor S connected to the #1 fire receiver 10 are set. As interlocking destinations, the AD45 of the smoke prevention device ER connected to the main relay 20 of #4, the AD45 of the smoke prevention device ER connected to the main relay 20 of #3, and the fire receiver #1. AD3 of district audio equipment B connected to 10 is set.

The interlock settings shown in FIGS. 4 and 5 are set by an external terminal such as a personal computer or a dedicated terminal connected to the fire alarm system 100. In the external terminal, the first condition, second condition, and interlocking destination of the first common zone AND-IP are set, and the fire receiver 10 and the main repeater 20 each have the information set in the external terminal. Only information about your own aircraft is transferred. In addition, the first condition and linked destination of the second common zone IP are set in the external terminal, and each of the fire receiver 10 and the main repeater 20 is provided with information related to its own machine among the information set in the external terminal. only will be transferred. The information transferred to the fire receiver 10 and the main repeater 20 is stored in the storage section 16 of each device.

FIG. 6 is a diagram illustrating an example of interlocking settings of the first common zone AND-IP stored in the fire receiver 10 and the main repeater 20. In FIG. 6, when the first common zone AND-IP1 shown in FIG. It shows the data that will be used.

For the #4 main repeater 20, the first condition is set to AD1 of the sensor S connected to the own device, and the second condition is that none of the sensors S connected to the own device is set. . Furthermore, the AD45 of the smoke prevention and exhaust system ER connected to the own machine is set as the interlocking destination.

For the main repeater 20 of #3, as a first condition, none of the sensors S connected to the main repeater S is set. As the second condition, AD1 of the sensor S connected to the own machine is set, and AD45 of the smoke prevention and exhaust system ER is set as the interlocking destination.

For the #1 fire receiver 10, AD1 of the sensor S connected to the own device is set as the first condition, AD2 of the sensor S connected to the own device is set as the second condition, and the linked destination is set. The AD3 of the district audio device B connected to the own device is set as . Focusing on the #1 fire receiver 10, both the first condition and the second condition are the sensor S connected to the fire receiver 10. The #1 fire receiver 10 shown in FIG. 6 is configured to be able to interlock with terminal devices connected to itself.

As shown in the comparison between FIG. 4 and FIG. Of the settings, only the data of the terminal device connected to the machine is stored.

Note that, as shown in FIG. 1, a second common zone IP2 is set for the #3 main repeater 20 and the #4 main repeater 20. Although not shown in FIG. 6, the #3 main repeater 20 and the #4 main repeater 20 also store data on the first condition and interlock destination in the second common zone IP2. In addition, information on the interlocking settings of the first common zone AND-IP and the second common zone IP of the entire fire alarm system 100 shown in FIGS. One unit, for example, the storage unit 16 of the fire receiver 10 may store the information.

FIG. 7 is a diagram illustrating an example of the operation of the fire receiver 10 and the main repeater 20 according to the first embodiment. In FIG. 7, an example of the interlocking operation of the first common zone AND-IP1 shown in FIGS. 4 and 6 will be described. First, it is assumed that the sensor S of AD1 connected to the main repeater 20 of #4 issues an alarm. Then, the #4 main repeater 20 acquires the alarm information of AD1 associated with the first condition (S1). The #4 main repeater 20 is connected to the first common zone AND-IP1 because the AD1 of the sensor S connected to it is set as the first condition of the first common zone AND-IP1 (see FIG. 6). Information indicating that the first condition of AND-IP1 is satisfied is sent to the LAN1 via the communication interface 13 (S2).

The #3 main repeater 20 and the #1 fire receiver 10 connected to the LAN 1 receive information that the first condition of the first common zone AND-IP1 is satisfied (S3, S4), and the first condition is met. The fact that the above has been established is stored in the storage unit 16 of the own machine (S5, S6). In addition, the #4 main repeater 20 acquires the information sent by itself via the LAN1, or when the first condition of the first common zone AND-IP1 is satisfied as a result of sending out the information in step S2. The information is stored in the storage unit 16 of the own machine (S7).

In this way, even if the sensor S of AD1 connected to the fire receiver 10 of #1 and associated with the first condition (see FIG. 6) does not alarm, the main relay of #4 20 outputs that the first condition is satisfied, the first condition is also satisfied in the #1 fire receiver 10. In addition, the #3 main repeater 20 does not have a sensor S associated with the first condition, but since the #4 main repeater 20 outputs that the first condition is satisfied, the #3 main repeater 20 does not have a sensor S associated with the first condition. The first condition is also satisfied in the main repeater 20.

Next, it is assumed that the sensor S of AD2 connected to the fire receiver 10 of #1 issues an alarm. Then, the #1 fire receiver 10 acquires alarm information of AD2 associated with the second condition (S8). Since the AD2 of the sensor S connected to the #1 fire receiver 10 is set as the second condition of the first common zone AND-IP1 (see FIG. 6), the fire receiver 10 of #1 is in the first common zone. Information indicating that the second condition of AND-IP is satisfied is sent to the LAN 1 via the communication interface 13 (S9).

#3 main repeater 20 and #4 main repeater 20 connected to LAN1 receive information that the second condition of the first common zone AND-IP is satisfied (S10, S11), and the second condition is satisfied. The fact that this has been established is stored in the storage unit 16 of the own machine (S13, S14). Further, the #1 fire receiver 10 acquires the information transmitted by itself via the LAN 1, or when the second condition of the first common zone AND-IP1 is satisfied as a result of transmitting the information in step S9. The information is stored in the storage unit 16 of the own device (S12).

In this way, even if the sensor S of AD1 connected to the main relay 20 of #3 and associated with the second condition (see FIG. 6) does not alarm, the fire receiver of #1 10 outputs that the second condition is satisfied, the second condition is also satisfied in the main repeater 20 of #3. In addition, although the #4 main repeater 20 does not have a sensor S associated with the second condition, the #4 fire receiver 10 outputs that the second condition is satisfied. The second condition also holds true in the main repeater 20.

In the first common zone AND-IP1, the first condition and the second condition are satisfied, so the #1 fire receiver 10, the #3 main repeater 20, and the #4 main repeater 20 are not connected to their own device. Operate the controlled device that has been linked. In this way, between the fire receiver 10 and the main repeater 20, or between the main repeater 20 and another main repeater 20, the controlled equipment can be linked in response to the alarm from the sensor S. I can do it.

In addition, in FIG. 4, FIG. 6, and FIG. 7, in each of the fire receiver 10 and the main repeater 20, the terminal device connected to the own device is set to one or both of the first condition and the second condition. An example was given. However, the terminal device connected to the device itself does not need to be set in both the first condition and the second condition. That is, both the first condition and the second condition are set to "not set" in FIG. , both the first condition and the second condition may be satisfied.

In addition, in the fire receiver 10 and the main repeater 20 in which the interlocking operation based on the first common zone AND-IP of the present embodiment is set, when both the first condition and the second condition are satisfied, the interlocking destination The controlled device was made to operate. At least one of the first condition and the second condition is satisfied by the alarm being issued from a terminal device connected to the fire receiver 10 or the main repeater 20 other than the fire receiver 10. Therefore, even if the fire receiver 10 and multiple main repeaters 20 are distributed in a larger or more complex building, the alarm from the sensor S and the operation of the controlled equipment can be controlled with a degree of freedom. Can be highly linked.

In addition, the information transmitted and received via the LAN 1 between the fire receiver 10 and the main repeater 20, which operate in conjunction with each other after the first common zone AND-IP is set, is information that specifies the first common zone AND-IP. This is only information indicating that the first condition or the second condition associated with this first common zone AND-IP is satisfied. Therefore, if a sensor S or a controlled device connected to the fire receiver 10 and any one of the plurality of main repeaters 20 is added or removed, the sensor S or controlled device will not be connected. It is only necessary to edit the interlock settings of the fire receiver 10 or main repeater 20. For example, when adding a sensor S connected to the main repeater 20 of #3 and setting this sensor S as the first condition of the first common zone AND-IP1, the main repeater 20 of #3 What is necessary is to update the information in the storage unit 16. Therefore, even if the installation state of the terminal equipment changes after the fire receiver 10 or the main repeater 20 is installed, it is possible to suppress an increase in the burden on the workers involved in setting the first common zone AND-IP. In addition, even if it becomes necessary to change the specifications of the first common zone AND-IP, it is only necessary to edit the interlock settings of the target fire receiver 10 and main repeater 20, so the specifications can be changed in a timely manner. .

1 LAN, 3 signal line, 10 fire receiver, 11 display section, 12 operation section, 13 communication interface, 14 terminal interface, 15 control section, 16 storage section, 20 main repeater, 100 distributed fire alarm system, AD terminal Address, B district sound system, ER smoke control system, S sensor.

Claims (3)

A fire receiver to which a detector and a controlled device that is controlled in conjunction with the alarm of the detector are connected,
A communication interface for connecting with other fire receivers via LAN;
a storage unit that stores data in which a first condition, a second condition, and a controlled device to be linked are linked when the first condition and the second condition are satisfied;
comprising a control unit;
The first condition is set with information specifying the sensor connected to the first fire receiver, which is either the fire receiver of the own device or the other fire receiver,
The second condition is set with information specifying the sensor connected to a second fire receiver different from the first fire receiver among the self-device and the other fire receiver,
Information for identifying the controlled device connected to the device itself is set in the linked controlled device,
When the sensor connected to the own machine is activated, the control unit may set the sensor to the first condition or the second condition if the sensor that generated the alarm is set to the first condition or the second condition. sending information indicating that the first condition or the second condition is satisfied to the LAN via the communication interface;
receiving information indicating that the first condition or the second condition is satisfied via the communication interface;
A fire receiver that operates the linked controlled device associated with the satisfied first condition and second condition when both the first condition and the second condition are satisfied. The storage unit is a common storage unit for identifying as a group at least one of a sensor and a controlled device connected to the own fire receiver, and at least one of a sensor and a controlled device connected to another fire receiver. storing zone information in association with the first condition, the second condition, and the linked controlled device;
When an alarm is generated from a sensor to which the common zone is set among the sensors connected to the own device, the control unit is configured to control the control unit to set the first condition and the second condition for the sensor that has generated the alarm. The fire receiver according to claim 1, wherein information on the common zone associated with one of the first condition and the second condition is sent to the LAN together with information indicating that one of the conditions is satisfied. A fire alarm system in which a plurality of fire receivers are provided to which a detector and a controlled device that is controlled in conjunction with the alarm of the detector are connected, and the plurality of fire receivers are connected via a LAN. There it is,
Each of the plurality of fire receivers includes information specifying a sensor connected to the fire receiver set in the first condition, and information specifying a sensor connected to the fire receiver set in the second condition. and information specifying a controlled device connected to the own device that is set as an interlocking destination when the first condition and the second condition are satisfied,
The plurality of fire receivers include :
When the sensor connected to the own machine is activated, if the sensor that generated the alarm is set to the first condition or the second condition, the first condition for which the sensor was set. or transmitting information indicating that the second condition is satisfied to the LAN,
receiving information indicating that the first condition or the second condition is satisfied via the LAN;
A fire alarm system in which, when both the first condition and the second condition are satisfied, the controlled device of the interlocking destination that is associated with the satisfied first condition and the second condition is operated.

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