JP2021149183A - Fire alarm facility - Google Patents

Abstract

To provide a fire alarm facility making it possible to readily and easily realize comprehensive monitoring of a monitoring area including information other than disaster prevention by utilizing a fire sensor installed in the monitoring area.SOLUTION: In a fire alarm facility, an analog fire sensor 16 is connected via a sensor base 14 onto a signal line 12 led to an R-type fire receiver 10. Environment monitoring means 18 is interposed between the sensor base 14 and the analog fire sensor 16. The environment monitoring means 18 observes the condition of an environment in which the fire sensor 16 is installed, and transmits an environment observation value to the R-type fire receiver 10. The R-type fire receiver 10 receives the environment observation value transmitted from the environment monitoring means 18, and displays the condition of the sensor installed environment on a display device 24.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fire alarm system that receives a fire signal from a fire detector connected to a signal line drawn from a fire receiver and gives an alarm.

Conventionally, in a P-type (proprietary-type) fire alarm system, an on / off fire detector is connected to a signal line from a fire receiver to monitor a fire in the monitoring area for each signal line, and fire reception is performed. The aircraft receives a fire alarm signal from the on / off fire detector and outputs a fire alarm.

Further, in the conventional R type (Record-type) fire alarm system, an analog fire detector is connected to the signal line from the fire receiver, and the analog fire detector is set with a unique address and has a transmission function. The fire receiver monitors fires in the monitoring area on a sensor-by-sensor (address-by-address) basis, and the fire receiver when the analog values such as smoke concentration and temperature detected by the analog fire detector exceed a predetermined fire threshold. It is judged as a fire and a fire alarm indicating the location of the fire corresponding to the detector address is output.

On the other hand, in buildings such as office buildings where fire alarm systems are installed, the temperature of rooms, etc., which are monitoring areas where fire sensors are installed, is to maintain a comfortable indoor environment on a daily basis. By installing sensors and humidity sensors and monitoring the room temperature and room humidity at a monitoring center, etc., management and control such as air conditioning operation and ventilation to maintain the indoor environment optimally are performed.

Japanese Unexamined Patent Publication No. 05-151478 JP-A-2002-026744

However, in order to monitor the environmental condition of the room, which is the monitoring area of the fire alarm system, a sensor for environmental monitoring such as a temperature sensor and a humidity sensor is installed, and a signal line is provided between the monitoring center and the monitoring center. It is necessary to lay it and monitor the environmental condition, which requires a dedicated signal line, which increases the equipment cost, and also places a sensor for environmental monitoring in the existing building to monitor the environmental condition at the monitoring center etc. It is difficult to provide monitoring equipment because additional repair work is difficult.

In addition, the location of the fire detector is located approximately in the center of the ceiling surface of the room, which is the monitoring area, and it can be said that it is a suitable position for, for example, a sensor for environmental monitoring that monitors conditions other than disaster prevention. Since the fire detector has already been installed according to the standard, it cannot be used for the installation of sensors other than the fire detector, and there is also a problem that the installation location of the sensor for environmental monitoring is restricted.

The present invention provides a fire alarm system that makes it possible to easily and easily realize comprehensive monitoring of a monitoring area including information other than disaster prevention by using a fire detector installed in a monitoring area. The purpose.

(Fire alarm system)
The present invention relates to a fire alarm system in which a fire detector is connected to a fire receiver via a detector base.
An environmental monitoring means installed between the sensor base and the fire detector that observes the state of the installation environment and sends the environmental observation values to the fire receiver.
A receiver control unit installed in the fire receiver that receives a signal from the fire detector and outputs a fire alarm, and also receives and notifies the environmental observation value from the environmental monitoring means.
Is provided.

(Contents of environmental monitoring)
The environmental monitoring means observes at least one of the temperature, humidity, microparticulate matter (PM), illuminance, radiation, vibration, noise, and pests of the installation environment.

(Mating structure of environmental monitoring means)
The environmental monitoring means is provided with a first fitting structure that is electrically and mechanically detachably fitted to the sensor base on the mounting surface with the sensor base, and the fire detector is mounted on the mounting surface with the fire detector. A second fitting structure is provided which is electrically and mechanically detachably fitted.

(Transmission of sensor detection values and environmental observation values of R-type fire alarm system)
A unique address is set for the fire detector, and the same address is set for the environmental monitoring means placed on the fire detector.
The receiver control unit of the fire receiver sends a ringing signal with an address specified,
When the fire detector determines a ringing signal of an address that matches its own address, it sends a response signal of the detector detection value to the fire receiver.
When the environmental monitoring means determines the ringing signal of the address matching the self-address, the environmental monitoring means transmits the response signal of the environmentally observed value to the fire receiver after a predetermined time based on the time related to the transmission of the sensor detection value.

(Stopping environmental monitoring operation in case of fire)
When the receiver control unit detects a fire, the receiver control unit stops the operation of the environmental monitoring means.

(Resumption of environmental monitoring operation due to fire recovery)
When the receiver control unit detects a predetermined fire recovery operation after detecting a fire, the receiver control unit transmits an environment monitoring stop release signal to the signal line to release the stop operation of the environment monitoring means.

(Basic effect)
The present invention is provided in a fire alarm system in which a fire detector is connected to a fire receiver via a detector base, and is provided between the detector base and the fire detector to observe the state of the installation environment. An environmental monitoring means that sends environmental observation values to the fire receiver, and an environmental monitoring means provided in the fire receiver that receives signals from the fire detector and outputs a fire alarm, and also receives environmental observation values from the environmental monitoring means. Since a receiver control unit is provided to notify the fire, the fire receiver can appropriately monitor the environmental condition of the room, for example, which is the monitoring area where the fire detector is installed, in addition to the disaster prevention information including the fire. It will be possible. Furthermore, since the environmental monitoring means can be installed at the installation location of the fire detector at a position suitable for the environmental monitoring means, it is possible to fully demonstrate the observation performance by the environmental monitoring means.

In addition, the fire detector is detachably installed on the sensor base fixedly installed on the ceiling surface of the room that is the monitoring area, whereas the environmental monitoring means is installed between the sensor base and the fire detector. Therefore, the installation location of the fire detector can be used as it is to appropriately monitor the state of the installation environment.

Furthermore, since the environmental observation values from the environmental monitoring means are transmitted to the fire receiver using the signal line of the fire alarm system, a fire detector is installed without laying a new signal line for environmental monitoring. The environmental condition of the monitoring area can be appropriately monitored, and it can be easily and easily applied to the existing fire alarm system.

(Effect of environmental monitoring contents)
In addition, since the environmental monitoring means is designed to observe at least one of the temperature, humidity, microparticulate matter (PM), illuminance, radiation, vibration, noise, and pests in the installation environment, a fire in the installation environment of the fire detector Various environmental conditions other than the above can be monitored as needed, which can be useful for the comfortable use of the monitoring area.

(Effect of fitting structure of environmental monitoring means)
In addition, the environmental monitoring means is provided with a first fitting structure that is electrically and mechanically detachably fitted to the sensor base on the mounting surface with the sensor base, and a fire is provided on the mounting surface with the fire detector. A second fitting structure that is electrically and mechanically detachably fitted to the sensor is provided, so it is easy and easy to install an environmental monitoring means between the sensor base and the fire detector installed in the monitoring area. It can be placed to monitor the environment, and even in the existing fire alarm system, similarly, the fire detector is removed from the sensor base and an environmental monitoring means is placed in between, and a fire receiver is also used. By simply adding a function to send and receive signals to and from the environment monitoring means, the state of the installation environment can be easily and easily monitored.

(Effect of transmission of sensor detection value and environmental observation value of R-type fire alarm system)
A unique address is set for the fire detector and the same address is set for the environmental monitoring means arranged in the fire detector, and the receiver control unit of the fire receiver sends a ringing signal with the specified address. , The fire detector sends a response signal of the detector detection value to the fire receiver when it determines the call signal of the address that matches the self-address, and the environmental monitoring means sends the call signal of the address that matches the self-address. When it is determined, the response signal of the environmental observation value is transmitted to the fire receiver after a predetermined time based on the time related to the transmission of the sensor detection value. It is possible to operate the environment monitoring means in conjunction with the operation of the sensor. Furthermore, since the environmental monitoring means transmits the response signal of the environmental observation value to the fire receiver after a predetermined time, the response signal of the sensor detection value and the response signal of the environmental observation value collide with each other while giving priority to the operation of the fire detector. Can be prevented.

(Effect of stopping the environmental monitoring operation in the event of a fire)
In addition, since the fire receiver stops the operation of the environmental monitoring means when a fire is detected, even if the environmental monitoring means is provided on the detector side, the environmental monitoring operation is stopped in the event of a fire to receive the fire. The burden on the environmental monitoring control of the machine control unit is eliminated, the control performance for the fire monitoring control is improved by that amount, and even if the function for monitoring the installation environment of the fire detector is provided, the original fire monitoring function is impaired. There is no.

(Effect of resuming environmental monitoring operation by fire recovery)
In addition, when the receiver control unit detects a predetermined fire recovery operation after detecting a fire, it sends an environmental monitoring stop release signal to the signal line to release the stop operation of the environmental monitoring means. In conjunction with the recovery operation performed by the fire receiver after the fire extinguishing is confirmed, the environmental monitoring operation by the environmental monitoring means that had been stopped until then can be automatically restarted.

It is a block diagram which showed the outline of the R type fire alarm system together with the functional structure of the R type fire receiver. It is a block diagram showing the functional configuration of the sensor base, the environmental monitoring means, and the fire detector in FIG. 6 is a time chart showing signal transmission between an R-type fire receiver, an analog fire detector, and an environmental monitoring means in the R-type fire alarm system of FIG. 1. It is a flowchart which showed the control operation by the fire receiver of FIG. It is a flowchart which showed the control operation by the environment monitoring means of FIG. It is a block diagram which showed the outline of the P type fire alarm system together with the functional composition of a fire receiver. It is a block diagram which showed the functional structure of the sensor base of FIG. 6, the environment monitoring means, and a fire detector. It is a flowchart which showed the control operation by the fire receiver of FIG. It is a flowchart which showed the control operation by the environment monitoring means of FIG.

Hereinafter, embodiments of the fire alarm system according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

[Basic concept of the embodiment]
Embodiments generally relate to fire alarm equipment.

The "fire alarm system" is a means for detecting and notifying a fire in a monitoring area. For example, a fire detector is connected to a signal line from a fire receiver via a detector base, and the fire detector is used. When a fire in the monitoring area is detected, a fire alarm is output from the fire receiver to notify the fire, and the concept includes an R-type fire alarm system and a P-type fire alarm system. In addition, part or all of the communication path between the fire receiver and the sensor base may be configured by wireless communication.

Here, the "monitoring area" is an area subject to fire monitoring by a fire alarm system, and is an outdoor or indoor space having a certain extent, for example, an area such as a building room, a corridor, or a staircase. It is a concept including. A "fire receiver" is an R-type fire receiver and a P-type fire that receives a signal from a fire detector and determines that a fire is a fire by issuing an alarm with a sound and / or a display to notify a person. Classified as a receiver. A "fire detector" is a device that detects the smoke concentration and temperature associated with a fire and sends a detected value or a signal that is determined to be a fire to the fire receiver, and is classified into an analog fire detector and an on / off fire detector. It is a concept that includes smoke detectors and heat detectors.

The "R-type fire alarm system" is a facility composed of an R-type fire receiver and an analog fire detector, and monitors a fire in units of detectors (sensor address units). Here, the "R-type fire receiver" is when the detector detection value (analog value) such as smoke concentration and temperature detected by the analog fire detector and the detector address are received and a fire is determined. It outputs a fire alarm indicating the location of the fire based on the sensor address. The "analog fire detector" is a device that detects the smoke concentration, temperature, etc. and sends the detector detection value as AD-converted analog data (analog value) to the R-type fire receiver together with its own address. be.

The "P-type fire alarm system" is a facility that is composed of a P-type fire receiver and an on / off fire detector, and monitors a fire on a signal line basis. Here, the "P-type fire receiver" receives a fire alarm signal based on the fire detection of the on / off fire detector, and when it is determined to be a fire, the monitoring area corresponding to the signal line, for example, the fire occurrence floor. It outputs a fire alarm to indicate. The "on-off fire detector" is a device that detects smoke concentration, temperature, etc. and transmits a fire alarm signal to a P-type fire receiver when it exceeds a predetermined fire threshold value or exceeds a fire threshold value.

The fire alarm system of the present embodiment includes an environmental monitoring means and a reception control unit, the environmental monitoring means is provided in the fire detector, and the reception control unit is provided in the fire receiver.

The "environmental monitoring means" is a means provided between the sensor base and the fire detector to observe the installation environment and transmit the environmental observation value to the fire receiver. Here, "observing the installation environment" means, for example, observing at least one of the temperature, humidity, microparticulate matter (PM), illuminance, radiation, vibration, noise, and pest of the installation environment and observing the environment. Therefore, as an example, at least one of a temperature sensor, a humidity sensor, a microparticulate substance sensor, an illuminance sensor, a radiation sensor, a vibration sensor, a noise sensor, a pest sensor, an ultrasonic sensor, and a microwave Doppler sensor. It is equipped with one.

The "reception control unit" is provided in the fire receiver, receives a signal from the fire detector to output a fire alarm, and receives an environmental observation value from the environmental monitoring means to display and / or sound. It is notified by.

Hereinafter, specific embodiments will be described. In the embodiment shown below, a case where the “monitoring area” is the “room of the building” and the “fire alarm system” is the “R-type fire alarm system” or the “P-type fire alarm system” will be described.

[Specific contents of the embodiment]
Next, the specific contents of the embodiment will be described. The contents will be explained separately as follows.
a. R-type fire alarm system b. Analog fire detector c. Environmental monitoring means in R-type fire alarm system d. Transmission signal in R-type fire alarm system e. Fire monitoring control in R-type fire alarm system f. Environmental monitoring control in R-type fire alarm system g. P-type fire alarm system h. On-off fire detector i. Environmental monitoring means in P-type fire alarm system j. Fire monitoring control in P-type fire alarm system k. Environmental monitoring control in P-type fire alarm system l. Modifications of the present invention

[A. R-type fire alarm system]
FIG. 1 is an explanatory diagram showing an outline of an R-type fire alarm system together with a functional configuration of an R-type fire receiver. As shown in FIG. 1, the R-type fire alarm system includes an R-type fire receiver 10 and an analog fire detector 16.

The R-type fire alarm system monitors fires in units of installation locations (address units) of fire detectors, and R-type fire receivers 10 are installed in disaster prevention centers and managers' rooms of buildings. An analog fire detector 16 is connected to a signal line 12 drawn from the type fire receiver 10 to the monitoring area via a sensor base 14 installed on the ceiling surface, and further, in the present embodiment, the detection is performed. An environmental monitoring means 18 is arranged between the device base 14 and the analog fire detector 16 and is connected to the signal line 12 via the sensor base 14.

The sensor base 14 is paired with the sensor mounting surface on the lower side of the sensor base 14, as shown in the assembled / disassembled state of the sensor base 14, the environmental monitoring means 18, and the analog fire detector 16 at the right end of FIG. A fitting structure 14a provided with the fitting terminals of the above is provided, and the fitting structure 16a composed of a pair of fitting terminals provided on the base mounting surface on the upper side of the analog fire detector 16 with respect to the fitting structure 14a. Therefore, the analog fire detector 16 is electrically and mechanically detachably connected to the sensor base 14.

Further, since the environmental monitoring means 18 is arranged between the sensor base 14 and the analog fire detector 16, the first fitting provided with a pair of fitting terminals on the mounting surface of the environmental monitoring means 18 on the sensor base 14 side. A structure 18a is provided, a second fitting structure 18b having a pair of fitting terminals is provided on the mounting surface on the analog fire detector 16 side, and the environmental monitoring means 18 is electrically and mechanically provided to the sensor base 14. The analog fire detector 16 is electrically and mechanically and detachably connected to the environmental monitoring means 18.

The analog fire detector 16 has a unique address and a transmission function, and detects the smoke concentration or temperature by a batch A / D conversion signal transmitted from the R-type fire receiver 10 at a predetermined cycle, for example, a 1-minute cycle. The signal is sampled by A / D conversion to store the sensor detection value that becomes analog detection data, and then for the ringing signal that matches the self-address transmitted from the R-type fire receiver 10 by sequentially specifying the address. A sensor response signal with a sensor detection value set is transmitted. Further, the analog fire detector 16 has a function of determining a preliminary fire by comparing the analog detection value with a predetermined preliminary fire threshold for preliminarily determining a fire, which is lower than a predetermined fire threshold for determining a fire on the receiver side. When a preliminary fire is determined, a predetermined fire interruption signal is transmitted to the R-type fire receiver 10.

The environmental monitoring means 18 observes the state of the installation environment and transmits the environmental observation value to the R-type fire receiver 10. The environmental monitoring means 18 observes at least one of, for example, the temperature, humidity, microparticulate matter (PM), illuminance, radiation, vibration, noise or pest of the installation environment. Therefore, the environmental monitoring means 18 includes, for example, a temperature sensor, a humidity sensor, a microparticulate substance sensor (PM2.5 sensor), an illuminance sensor, a radiation sensor, a vibration sensor, a noise sensor, and a pest, depending on the environmental monitoring target. A sensor, an ultrasonic sensor, a microwave Doppler sensor, or the like is provided.

Further, the environmental monitoring means 18 is set with the same unique address as the analog fire detector 16 integrally arranged, and like the analog fire detector 16, the R-type fire receiver 10 has a predetermined cycle, for example, 1. The sensor detection signal is sampled by the batch A / D conversion signal transmitted in a minute cycle to store the environmental observation value that becomes the environmental observation data, and then the address is sequentially assigned from the R-type fire receiver 10. For the ringing signal that matches the self-address transmitted by designating, the environmental response signal set with the environmental observation value is set after the elapse of a predetermined waiting time for the analog fire detector 16 to finish transmitting the sensor response signal. Send.

The R-type fire receiver 10 is provided with a receiver control unit 20, a transmission unit 22, a display device 24, a display unit 26, an operation unit 28, an alarm unit 30, and a report transfer unit 32.

The receiver control unit 20 is composed of a computer circuit including a CPU, a memory, and various input / output ports. In addition to a predetermined fire monitoring control function by executing a program, an environment monitoring means 18 installed in a monitoring area 18 The environment monitoring and notification function is realized in response to.

The transmission unit 22 has a function of bidirectionally transmitting a signal between the analog fire detector 16 connected to the signal line 12 drawn out to the monitoring area and the environment monitoring means 18. Here, the maximum address that can be set per line of the signal line 12 drawn from the transmission unit 22 is, for example, 256 addresses. Therefore, the signal line 12 has a maximum of 256 analog fire detectors 16 and a maximum of 256. The environment monitoring means 18 of the stand can be connected.

The downlink signal from the transmission unit 22 of the R-type fire receiver 10 to the analog fire detector 16 is transmitted in a voltage mode in which the line voltage is changed according to the data bits. The signal in this voltage mode is transmitted as a voltage pulse that changes the voltage of the signal line 12 between, for example, 18 and 30 volts.

On the other hand, the uplink signal from the analog fire detector 16 to the transmission unit 22 of the R-type fire receiver 10 is transmitted in a current mode in which the signal line current is changed according to the data bits. In this current mode, a signal line current is passed through the signal line 12 at the timing of bit 1 of the transmission data, and an uplink signal is transmitted to the transmission unit 22 of the R-type fire receiver 10 as a so-called current pulse train.

Similarly to the case of the analog fire detector 16, the signal transmission between the transmission unit 22 of the R-type fire receiver 10 and the environmental monitoring means 18 integrally provided with the analog fire detector 16 is also environmentally monitored from the transmission unit 22. The downlink signal to the means 18 is transmitted in the voltage mode, and the uplink signal from the environment monitoring means 18 to the transmission unit 22 of the R-type fire receiver 10 is transmitted in the current mode.

The fire monitoring control by the receiver control unit 20 is as follows. During normal monitoring, the receiver control unit 20 instructs the transmission unit 22 to repeat a batch A / D conversion signal for all analog fire detectors 16 at a predetermined transmission cycle, for example, every 1 minute cycle. I'm sending. When the analog fire detector 16 receives the batch A / D conversion command from the R-type fire receiver 10, it samples the detected detection signals such as smoke concentration and temperature by A / D conversion to obtain analog detection data. It is stored as a detector detection value and compared with a predetermined preliminary fire threshold.

Further, the receiver control unit 20 instructs the transmission unit 22 to transmit a ringing signal in which the sensor address is sequentially specified during the transmission cycle of the batch A / D conversion signal, and the analog fire detector 16 When it receives a ringing signal of an address that matches its own address, it transmits a sensor response signal in which the sensor detection value stored at that time is set to the R-type fire receiver 10.

Further, when the detector detection value sampled at the time of receiving the batch A / D conversion command by the analog fire detector 16 exceeds or exceeds the predetermined preliminary fire threshold value, a fire interruption signal is transmitted to the R-type fire receiver 10. do. This fire interrupt signal sends a signal that is not normally used, such that the response bit string is all 1.

When the receiver control unit 20 of the R-type fire receiver 10 receives the fire interruption signal from the analog fire detector 16, it transmits a group search signal from the group including the analog fire detector 16 that has detected a preliminary fire. The group is identified by receiving the response signal of the preliminary fire.

Subsequently, the individual analog fire detectors 16 included in the determined group are searched within the group by sequentially transmitting a ringing signal with a specified address, and the detectors of the analog fire detector 16 that transmit the fire interruption signal. By recognizing the address and repeatedly transmitting a call signal that specifies the detector address recognized by the batch AD conversion command and the address search, the detector detection values are intensively collected and compared with the predetermined fire threshold, and a fire is fired. When a state above the threshold value or exceeding the fire threshold value continues for a predetermined accumulation time, it is determined that the fire has occurred, and an operation of outputting a fire alarm indicating the fire occurrence location (fire occurrence section such as a room) corresponding to the sensor address is performed. When the R-type fire receiver 10 recognizes the address of the analog fire detector 16 that has transmitted the fire interruption signal, it outputs a preliminary fire alarm (pre-alarm) indicating a location such as a room corresponding to the detector address. Take action and call attention to those involved.

On the other hand, the receiver control unit 20 receives the environmental response signal set with the environmental observation value transmitted from the environmental monitoring means 18 in response to the transmission of the ringing signal in which the sensor addresses are sequentially specified. Based on the observed environmental values, predetermined information indicating the state of the installation location of the environmental monitoring means 18 is generated, and the display device 24 is displayed for notification. In this case, if there is an abnormality in the environmentally observed value, a predetermined alarm sound is issued to call attention.

The display unit 26 is provided with various indicator lights necessary for fire monitoring, such as a fire representative light and a failure representative light. The operation unit 28 is provided with various switches necessary for fire monitoring, such as a fire determination switch, an acoustic stop switch, a district acoustic pause switch, and a recovery switch. The alarm unit 30 includes a speaker and outputs various alarm sounds and voice messages. The transfer unit 32 outputs a predetermined transfer signal to an external device or device.

Here, the display device 24 includes a part of the functions of the display unit 26, and can include a part of the functions of the operation unit 28 by using a display with a touch panel.

Further, although the display device 24 normally displays the display based on the environmental observation value detected by the environmental monitoring means 18, the environmental monitoring means 18 is provided with a plurality of types of sensors for a plurality of types of environmental observation. When the value is received, the environment menu screen is displayed so that the required environmental observation value can be selectively displayed.

Further, when the receiver control unit 20 receives the fire interrupt signal from the analog fire detector 16, it transmits an environment monitoring stop signal instructing the transmission unit 22 to specify a common address to the signal line 12, and all the signals are transmitted. Control is performed to stop the operation of the environment monitoring means 18. As a result, when a fire occurs, the receiver control unit 20 only performs the control operation of fire monitoring, and the control operation of the environmental monitoring notification is stopped, so that even if the environmental monitoring means 18 is provided, the fire monitoring control is adversely affected. There is no such thing.

Further, when the receiver control unit 20 detects the recovery by the operation of the recovery switch provided in the operation unit 28 performed in response to the extinguishing of the fire after transmitting the environment monitoring stop signal, the receiver control unit 20 instructs the transmission unit 22. Then, an environment monitoring stop release signal for which a common address is specified is transmitted to the signal line 12, and control is performed to release the stop operation of all the environment monitoring means 18 and restart the operation.

[B. Analog fire detector]
FIG. 2 is an explanatory diagram showing the functional configurations of the sensor base, the environmental monitoring means, and the analog fire detector of FIG.

As shown in FIG. 2, the analog fire detector 16 includes a power supply unit 38, a transmission unit 40, a sensor control unit 42, a fire sensor unit 44, and a warning indicator light 45 (not shown). The power supply unit 38 inputs the power supply voltage supplied from the receiver side by the signal line 12 composed of the SC line 12a and the C line 12b, and outputs a predetermined constant voltage as the sensor power supply voltage. The signal line 12 may be provided with a dedicated power supply line in addition to the SC line 12a and the C line 12b for transmission.

The transmission unit 40 receives the uplink signal in the voltage mode and transmits the downlink signal in the current mode with the transmission unit 22 of the R-type fire receiver 10.

The fire sensor unit 44 is, for example, a smoke detection unit, which has a known scattered light type smoke detection structure, intermittently drives a light emitting unit using an infrared LED to emit light at a predetermined cycle, and is a light receiving unit such as a photodiode. The received signal of the received scattered light is amplified, and the smoke concentration detection signal is output. Further, the fire sensor unit 44 may be provided with a temperature detection unit instead of the smoke detection unit, and the temperature detection unit uses, for example, a thermistor as the temperature detection element, and in this case, the resistance value changes with temperature. The voltage signal is output as a temperature detection signal.

The sensor control unit 42 is composed of a computer circuit including various input / output ports including a CPU, a memory, and an A / D conversion port, and the function of the sensor control unit 42 is realized by executing a program.

When the sensor control unit 42 receives the batch A / D conversion signal via the transmission unit 40, the sensor control unit 42 samples the smoke concentration detection signal or the temperature detection signal output from the fire sensor unit 44 by A / D conversion for analog detection. When the data is stored as a sensor detection value and subsequently a ringing signal matching the self-address is received, a sensor response signal in which the sensor detection value is set is generated, and the transmission unit 40 is instructed to transmit the control. conduct.

Further, the detector control unit 42 compares the detector detection value with a predetermined preliminary fire threshold value lower than the fire threshold value used in the fire determination on the receiver side, and determines that the fire is a preliminary fire when the preliminary fire threshold value is equal to or greater than the preliminary fire threshold value. Then, the transmission unit 40 is instructed to control the transmission of the fire interruption signal.

[C. Environmental monitoring means in R-type fire alarm system]
(C1. Outline of environmental monitoring means)
As shown in FIG. 2, the environmental monitoring means 18 is mechanically detachably arranged between the sensor base 14 and the analog fire detector 16 by the first fitting structure 18a and the second fitting structure 18b. Moreover, it is electrically and detachably connected to the signal line 12 composed of the SC line 12a and the C line 12b.

The environment monitoring means 18 is composed of a power supply unit 46, a transmission unit 48, an environment monitoring control unit 50, and an observation unit 52. The power supply unit 46 inputs the power supply voltage supplied from the receiver side by the signal line 12 composed of the SC line 12a and the C line 12b, and outputs a predetermined constant voltage as the power supply voltage.

The transmission unit 48 receives the uplink signal in the voltage mode and transmits the downlink signal in the current mode with the transmission unit 22 of the R-type fire receiver 10.

The observation unit 52 observes the environmental state of the place where the environmental monitoring means 18 is installed. Observation of the environmental condition by the environmental monitoring means 18 will be described as follows.

(C2. Observation of environmental temperature)
The observation unit 52 is provided with a temperature sensor when observing the environmental temperature of the installation location. The environment monitoring control unit 50 transmits the temperature detection value to the R-type fire receiver 10. For example, a thermistor is used as a temperature sensor, and in this case, a temperature detection value that becomes a voltage signal corresponding to a change in resistance value due to temperature is output.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the temperature detection value transmitted from the environmental monitoring means 18. Is displayed and the environmental temperature is displayed in each section by numerical value and color coding, etc. so that the distribution of the environmental temperature in the facility can be grasped at a glance, and it can be used for air conditioning management and control.

(C3. Observation of environmental humidity)
When observing the environmental humidity of the installation location, the observation unit 52 is provided with a humidity sensor, and the environmental monitoring control unit 50 transmits the humidity detection value to the R-type fire receiver 10.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the humidity detection value transmitted from the environmental monitoring means 18. Is displayed and the environmental humidity is displayed in each section by numerical value and color coding, etc. so that the distribution of the environmental humidity in the facility can be grasped at a glance, and it can be used for air conditioning management and control. Further, a low humidity threshold value or a high humidity threshold value may be set to determine low humidity and issue a dry warning by sound and / or display, or determine high humidity and issue an unpleasant warning.

(C4. Observation of microparticulate substances)
When observing the concentration of the microparticulate substance (PM) at the installation location, the observation unit 52 is provided with, for example, a PM2.5 sensor as a microparticulate substance sensor, and the environmental monitoring control unit 50 detects the PM2.5 concentration. Is transmitted to the R-type fire receiver 10.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 was divided into, for example, a sensor installation section in the display device 24 based on the PM2.5 concentration detection value transmitted from the environmental monitoring means 18. In addition to displaying the floor plan of the facility, the PM2.5 concentration is displayed in each section by numerical value and color coding so that the distribution of PM2.5 concentration in the facility can be grasped at a glance. Further, the abnormal level of PM2.5 concentration may be set to issue a warning by sound and / or display.

(C5. Observation of illuminance)
When observing the illuminance of the installation location, the observation unit 52 is provided with an illuminance sensor, and the environment monitoring control unit 50 transmits the illuminance detection value to the R-type fire receiver 10.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the illuminance detection value transmitted from the environmental monitoring means 18. Is displayed and the illuminance is displayed in each section by numerical value and color coding so that the state of brightness due to the lighting in the facility can be grasped at a glance, and it is used for operation management of whether or not proper lighting is performed. do.

(C6. Observation of radiation)
When observing radiation harmful to the human body at the installation site, for example, radiation caused by a nuclear accident, the observation unit 52 is provided with a radiation sensor, and the environment monitoring control unit 50 sets the radiation detection value to the R-type fire receiver 10. Send to.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the radiation detection value transmitted from the environmental monitoring means 18. Is displayed and the radiation intensity is displayed in each section by numerical value and color coding so that the radiation intensity in the facility can be grasped at a glance, and when the radiation intensity exceeds the danger level, an alarm is given by sound and / or display. To issue.

(C7. Observation of vibration)
The observation unit 52 is provided with a vibration sensor when observing the vibration of the installation location. As the vibration sensor, an acceleration sensor that detects acceleration due to vibration, a strain sensor that detects distortion due to vibration, and the like are provided. The environment monitoring control unit 50 transmits the vibration detection value detected by the vibration sensor to the R-type fire receiver 10.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the vibration detection value transmitted from the environmental monitoring means 18. Is displayed and the vibration intensity is displayed in each section by numerical value and color coding so that the state of vibration in the facility can be grasped at a glance, and when the vibration intensity exceeds the abnormal level, an alarm is issued by sound and / or display. Try to put it out.

(C8. Observation of noise)
The observation unit 52 is provided with a noise sensor when observing the noise at the installation location. A microphone is provided as a noise sensor. The environment monitoring control unit 50 transmits the noise detection value detected by the noise sensor to the R-type fire receiver 10.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the noise detection value transmitted from the environmental monitoring means 18. Is displayed and the noise level is displayed in each section by numerical value and color coding so that the state of noise in the facility can be grasped at a glance, and when the noise level exceeds the abnormal level, it is displayed by sound and / or display. Be alert.

(C9. Observation of pests)
The observation unit 52 is provided with a pest sensor when observing the invasion of pests into the installation site. As the pest sensor, a sensor that detects vibration and sound peculiar to the pest is used. The environment monitoring control unit 50 transmits the pest detection value detected by the noise sensor to the R-type fire receiver 10.

As the pest observation sensor, an ultrasonic sensor, a microwave Doppler sensor, or the like can be provided. Since ultrasonic sensors can detect moving objects, they can be used to monitor the invasion of pests such as cockroaches and fire ants, for example.

In addition, the microwave Doppler sensor can detect displacements on the order of several millimeters with high accuracy by comparing the frequency of the transmitted wave and the frequency of the reflected wave, for example, for monitoring the invasion of pests such as cockroaches and fire ants. Available.

The receiver control unit 20 of the R-type fire receiver 10 shown in FIG. 1 is a facility plan view divided into, for example, a sensor installation section in the display device 24 based on the pest detection value transmitted from the environmental monitoring means 18. Is displayed and the invasion of pests is displayed in each section by color coding, etc., so that the presence of pests in the facility can be grasped at a glance, which can be useful for pest control measures such as disinfection.

(C10. Other environmental observations)
As the sensor provided in the observation unit 52, an appropriate sensor other than the above-mentioned sensor can be provided as needed. Further, the observation unit 52 may be provided with two or more different sensors to observe the environmental state in a complex manner.

[D. Transmission signal in R-type fire alarm system]
FIG. 3 is a time chart showing signal transmission between the R-type fire receiver, the analog fire detector, and the environmental monitoring means in the R-type fire alarm system of FIG. 1, and FIG. 3 (A) shows a downlink signal (calling). The transmission of the signal) is shown, and FIG. 3 (B) shows the transmission of the uplink signal (response signal).

As shown in FIG. 3A, the R-type fire receiver 10 transmits the batch A / D conversion signal 60 as a downlink signal every predetermined transmission cycle T, and in the meantime, the sensor address is sequentially designated. The call signal 62 is transmitted as a downlink signal. The call signal 62 is composed of an address, a command, and a checksum (CK), and a call command (polling command) is set in the command.

The batch A / D conversion signal 60 is also composed of an address, a command, and a checksum (CK) like the call signal 62. The batch A / D conversion command is set in the command, and a common address is set in the address.

The analog fire detector 16 and the environmental monitoring means 18 that have received the batch A / D conversion signal 60 transmitted from the R-type fire receiver 10 sample the detection signal by the sensor by A / D conversion, and the sensor detection value or Store as an environment detection value.

Further, as shown in FIG. 3B, the analog fire detector 16 that determines that the address of the call signal 62 and the self-address match with respect to the call signal 62 transmitted from the R-type fire receiver 10 detects the detector. The sensor response signal 64 in which the value is set is transmitted as an uplink signal, and the environment monitoring means 18 that determines that the address of the same ring signal matches the self-address detects the environment response signal 66 in which the environment observation value is set. After a predetermined waiting time determined by the transmission time of the instrument response signal 64 has elapsed, the signal is transmitted as an uplink signal.

[E. Fire monitoring control in R-type fire alarm system]
FIG. 4 is a flowchart showing a fire control operation by the R-type fire receiver 10 of FIG. 1, which is controlled by the receiver control unit 20.

As shown in FIG. 4, the receiver control unit 20 transmits a batch A / D conversion signal for each predetermined transmission cycle T in step S1 during normal monitoring, and transmits a ringing signal whose addresses are sequentially specified during that period. When call control is performed and the reception of the sensor response signal is determined in step S2, the process proceeds to step S3. During normal monitoring, the sensor detection value set in the sensor response signal is sufficiently lower than the fire threshold value. Controls such as displaying the status of fire monitoring from.

Subsequently, the receiver control unit 20 displays the observed environmental state of the installation location on the display device 24 based on the environmental observation value set in the environmental response signal received following the sensor response signal in step S4. And perform control such as notifying.

Subsequently, when the receiver control unit 20 detects the reception of the fire interruption signal from the analog fire detector 16 that has determined the preliminary fire in step S5, the receiver control unit 20 proceeds to step S6 to transmit the environmental monitoring stop signal, and all of them. The operation of the environment monitoring means 18 is stopped, and then the process proceeds to step S7, the group including the analog fire detector 16 that has determined the preliminary fire by transmitting the group search signal is specified, and the detector address in the specified group is specified. By transmitting the ringing signal, the control is performed to search for the address of the so-called alarm detector that has determined the preliminary fire.

Subsequently, the receiver control unit 20 proceeds to step S8, intensively collects the detector detection values from the detector addresses where the preliminary fire is determined, and when the state of the fire threshold value or higher continues for a predetermined accumulation time. It is determined that there is a fire, and a fire alarm that identifies the location of the fire area (fire area) is output.

Subsequently, the receiver control unit 20 monitors the presence or absence of fire recovery in step S9, and when fire recovery is performed by operating the recovery switch as the fire is extinguished, the process proceeds to step S10 and an environmental monitoring stop release signal is transmitted. Then, the operation stop of all the environment monitoring means 18 is released, the environment monitoring operation is restarted, and the process returns to the process of step S1.

[F. Environmental monitoring control in R-type fire alarm system]
FIG. 5 is a flowchart showing the control operation by the environment monitoring means 18 of FIG. 1, and the control is performed by the environment monitoring control unit 50 provided in the environment monitoring means 18 of FIG.

As shown in FIG. 5, when the environment monitoring control unit 50 determines the reception of the call signal for which the self-address is specified in step S11, the process proceeds to step S12, and the sensor response signal transmitted from the analog fire detector 16 having the same address Waiting for the elapse of a predetermined waiting time corresponding to the transmission time, and determining the elapse of this waiting time, the process proceeds to step S13, and an environmental response signal set with the environmental observation value stored by A / D conversion at that time is generated. , It is transmitted to the R-type fire receiver 10 as an uplink signal.

Subsequently, when the environment monitoring control unit 50 determines the reception of the environment monitoring stop signal in step S14, the environment monitoring control unit 50 proceeds to step S15 to stop the environment monitoring operation, and stops other operations while leaving only the function of the transmission unit 48. Make it a state.

Subsequently, when the environment monitoring control unit 50 determines that the environment monitoring stop release signal has been received in step S16 while the environment monitoring is stopped, the environment monitoring control unit 50 proceeds to step S17 to release the environment monitoring stop operation and restart the environment monitoring operation. Return to S11.

[G. P-type fire alarm system]
FIG. 6 is an explanatory diagram showing an outline of a P-type fire alarm system together with a functional configuration of a P-type fire receiver. As shown in FIG. 6, the P-type fire alarm system that monitors a fire in units of signal lines is a signal line drawn out from a P-type fire receiver 100 installed in a disaster prevention center of a building, a manager's room, or the like to a monitoring area. An on-off fire detector 116 is connected to the 112 via a detector base 14 installed on the ceiling surface, and an environmental monitoring means 18 is arranged between the detector base 14 and the on-off fire detector 116 to provide a detector. It is connected to the signal line 112 via the base 14.

The on / off fire detector 116 detects the smoke concentration or temperature, determines that it is a fire if the detected value exceeds or exceeds a predetermined fire threshold, and sends a warning current to the signal line 112 to send the detector warning signal to a P-type fire. It is transmitted to the receiver 100.

The environmental monitoring means 18 arranged between the detector base 14 and the on / off fire detector 116 is basically the same as the environmental monitoring means 18 shown in FIG.

The P-type fire receiver 100 is provided with a receiver control unit 120, a transmission unit 22, a line receiver unit 122, a display device 124, a display unit 126, an operation unit 128, an alarm unit 130, and a report transfer unit 132.

The receiver control unit 120 is composed of a computer circuit including a CPU, a memory, and various input / output ports, and in addition to a predetermined fire monitoring control function by executing a program, an environmental monitoring means installed in a monitoring area. The function of environmental monitoring and notification is realized corresponding to 18.

The line receiving unit 122 detects the alarm current flowing by the fire determination of the on / off fire detector 116 connected to the signal line 112 drawn out for each monitoring area, and transmits the line alarm receiving signal to the receiver control unit 120. Output to.

The transmission unit 22 is formed as a single transmission signal line by connecting in parallel to each of the plurality of signal lines 112 drawn out from the plurality of line reception units 122 to the monitoring area via the diode 150, and is based on a sensor. It has a function of bidirectionally transmitting a signal between all the environmental monitoring means 18 provided between the 14 and the on / off fire detector 116. The diode 150 prevents the alarm current from flowing through the other signal lines 112 even if the alarm current flows through its own signal line 112 due to the fire alarm of the on / off fire detector 116. Here, when the transmission unit 22 is connected in parallel to the signal lines 112 from the plurality of line reception units 122 to form a single transmission signal line, the maximum address that can be set is, for example, 256 addresses, and therefore a plurality of addresses. A maximum of 256 environmental monitoring means 18 can be connected to the signal line 112 as a whole.

The downlink signal from the transmission unit 22 to the environment monitoring means 18 is transmitted in the voltage mode, and the uplink signal from the environment monitoring means 18 to the transmission unit 22 is transmitted in the current mode.

The fire monitoring control by the receiver control unit 120 is as follows. When the receiver control unit 120 determines that any of the plurality of line receiving units 122 has received the sensor alarm signal, for example, the storage operation is started, and the reception of the detected alarm signal is continued for a predetermined storage time. Then, it is determined that there is a fire, and control is performed to output a fire alarm that identifies a monitoring area corresponding to the signal line 112 receiving the sensor alarm signal, for example, the floor where the fire occurred.

On the other hand, the receiver control unit 120 receives the environment response signal in which the environment observation value is set is received from the environment monitoring means 18 in response to the transmission of the call signal in which the addresses of the transmission units 22 are sequentially specified. Based on the observed values, predetermined information indicating the environmental state of the installation location of the environmental monitoring means 18 is generated, and the display device 124 is displayed for notification. The display unit 126, the operation unit 128, the alarm unit 130, and the report unit 132 are basically the same as the R-type fire receiver 10 shown in FIG.

Further, when the receiver control unit 120 detects the reception of the detected alarm signal by the line reception unit 122, the receiver control unit 120 transmits an environment monitoring stop signal instructing the transmission unit 22 to specify a common address to the signal line 112, and all of them are transmitted. Controls to stop the operation of the environment monitoring means 18 of the above. As a result, when a fire occurs, the receiver control unit 120 performs a control operation only for the fire monitoring control, and the control operation of the environmental monitoring notification is stopped. Therefore, even if the environmental monitoring means 18 is provided, the fire monitoring control is adversely affected. There is no effect.

Further, when the receiver control unit 120 detects the recovery by the operation of the recovery switch provided in the operation unit 128, which is performed in response to the extinguishing of the fire after transmitting the environment monitoring stop signal, the receiver control unit 120 instructs the transmission unit 22. Then, an environment monitoring stop release signal for which a common address is specified is transmitted to the signal line 112, and control is performed to release the stop operation of all the environment monitoring means 18 and restart the operation.

[H. On-off fire detector]
FIG. 7 is an explanatory diagram showing the functional configurations of the sensor base, the environmental monitoring means, and the on / off fire detector of FIG.

As shown in FIG. 7, the on / off fire detector 116 includes a power supply unit 138, a alarm circuit unit 140, a detector control unit 142, a fire sensor unit 144, and an alarm indicator light 145 (not shown). The power supply unit 138 inputs the power supply voltage supplied from the receiver side by the signal line 112 composed of the SC line 112a and the C line 112b, and outputs a predetermined constant voltage as the sensor power supply voltage.

When the alarm circuit unit 140 determines a fire, the alarm circuit unit 140 performs a switching operation of short-circuiting the signal lines 112 to a low impedance, causes a predetermined alarm current to flow through the signal line 112, and receives the detector alarm signal as a P-type fire. It is transmitted to the machine 100, and the alarm indicator lamp 145 is turned on by the alarm current.

The fire sensor unit 144 is, for example, a smoke detection unit, which has a known scattered light type smoke detection structure, intermittently drives a light emitting unit using an infrared LED to emit light at a predetermined cycle, and is a light receiving unit such as a photodiode. The received signal of the received scattered light is amplified, and the smoke concentration detection signal is output. Further, the fire sensor unit 144 may be provided with a temperature detection unit instead of the smoke detection unit, and the temperature detection unit uses, for example, a thermistor as the temperature detection element, and in this case, the resistance value changes with temperature. Outputs a temperature detection signal that becomes a voltage signal.

The sensor control unit 142 is composed of a computer circuit including a CPU, a memory, and various input / output ports, and the function of the sensor control unit 142 is realized by executing a program. The detector control unit 142 compares the detection signal output from the fire sensor unit 144 with a predetermined fire threshold value, determines that the fire is above the fire threshold value or exceeds the fire threshold value, and operates the alarm circuit unit 140. A predetermined alarm current is passed through the signal line 112 to control the detector alarm signal to be transmitted to the P-type fire receiver 100.

[I. Environmental monitoring means in P-type fire alarm system]
As shown in FIG. 7, the environmental monitoring means 18 is mechanically detachably arranged between the sensor base 14 and the on / off fire detector 116 by the first fitting structure 18a and the second fitting structure 18b. Moreover, it is electrically and detachably connected to the signal line 112 composed of the SC line 12a and the C line 12b.

The environment monitoring means 18 is composed of a power supply unit 46, a transmission unit 48, an environment monitoring control unit 50, and an observation unit 52, and its functions are basically the same as those of the environment monitoring means 18 shown in FIG. 2, but the environment monitoring When the control unit 50 detects the reception of the call signal for which the self-address is specified, unlike the environment monitoring means of FIG. 2, the control unit 50 outputs an environment response signal in which the environment observation value is set without waiting for the elapse of a predetermined waiting time. It differs in that it controls transmission as an uplink signal.

[J. Fire monitoring control in P-type fire alarm system]
FIG. 8 is a flowchart showing the control operation by the P-type fire receiver 100 of FIG. 6, which is controlled by the receiver control unit 120.

As shown in FIG. 8, during normal monitoring, the receiver control unit 120 instructs the transmission unit 22 in step S21 to transmit a batch A / D conversion signal every cycle T, and during that time, the environmental monitoring means 18 Call control is performed by transmitting a call signal in which addresses are sequentially specified. When the reception of the environmental response signal from the environmental monitoring means 18 is determined in step S22, the process proceeds to step S23, and the environmental observation value set in the environmental response signal is set. Based on the above, control such as displaying the environmental state of the installation location on the display device 124 and notifying the display device 124 is performed.

Subsequently, the receiver control unit 120 detects the reception of the detector alarm signal from the on / off fire detector 116 that ignited in step S24, further determines the elapse of a predetermined accumulation time, and proceeds to step S25 to monitor the environment. A stop signal is transmitted to stop the operation of all the environmental monitoring means 18, and then the process proceeds to step S26 to output a fire alarm with a display of the fire occurrence area, for example, the fire occurrence floor, in which the issued signal line is specified. ..

Subsequently, the receiver control unit 120 monitors the presence or absence of fire recovery in step S27, and when fire recovery is performed by operating the recovery switch as the fire is extinguished, the process proceeds to step S28 and an environmental monitoring stop release signal is transmitted. Then, the operation stop of all the environment monitoring means 18 is released, the environment monitoring operation is restarted, and the process returns to the process of step S21.

[K. Environmental monitoring control in P-type fire alarm system]
FIG. 9 is a flowchart showing the control operation by the environment monitoring means 18 of FIG. 6, which is controlled by the environment monitoring control unit 50 provided in the environment monitoring means 18 of FIG.

As shown in FIG. 9, when the environment monitoring control unit 50 determines the reception of the call signal for which the self-address is specified in step S31, the process proceeds to step S32, and the environmental observation value stored by the A / D conversion at that time is set. An environmental response signal is generated, and the environmental response signal is transmitted to the P-type fire receiver 100 as an uplink signal.

Subsequently, when the environment monitoring control unit 50 determines the reception of the environment monitoring stop signal in step S33, the environment monitoring control unit 50 proceeds to step S34 to stop the environment monitoring operation, and stops other operations while leaving only the function of the transmission unit 48. Make it a state.

Subsequently, when the environment monitoring control unit 50 determines that the environment monitoring stop release signal has been received in step S35 while the environment monitoring is stopped, the environment monitoring control unit 50 proceeds to step S36 to release the environment monitoring stop operation and restart the environment monitoring operation. Return to S31.

[L. Modifications of the present invention]
(External output of environmental observation values)
The fire receiver may output the environmental observation value acquired from the environmental monitoring means and / or the value based on the environmental observation value to other equipment. When the device or the device connected to the device notifies the environmental observation value and / or the value based on the environmental observation value, the fire receiver is for notifying the environmental observation value and / or the value based on the environmental observation value. It may not have a function.

(Installation of environmental monitoring means)
In the above embodiment, the environmental monitoring means is provided between all the sensor bases and the fire detector, but the installation of the environmental monitoring means may be any required sensor installation location.

Further, as the environmental monitoring means, a plurality of types of environmental monitoring means equipped with sensors for observing different observed values may be prepared, and different types of environmental monitoring means may be installed at different fire detector installation locations.

(Operation indicator of environmental monitoring means)
In addition, if an operation indicator light is provided in the environmental monitoring means and a failure or the like is detected in the environmental monitoring state by the fire receiver, a control signal with an address is transmitted to blink or turn on the operation indicator light. good. From this, the environmental monitoring means causing the failure can be easily confirmed and dealt with by blinking or lighting the operation indicator lamp.

(others)
Further, the present invention is not limited to the above-described embodiment, includes appropriate modifications that do not impair its purpose and advantages, and is not further limited by the numerical values shown in the above-described embodiment.

10: R-type fire receiver 12, 112: Signal line 14: Sensor base 14a, 16a, 116a: Fitting structure 16: Analog fire detector 18: Environmental monitoring means 18a: First fitting structure 18b: Second fitting Combined structures 20, 120: Receiver control units 22, 40, 48: Transmission unit 24, 124: Display device 26, 126: Display unit 28, 128: Operation unit 30, 130: Alarm unit 32, 132: Transfer unit 38 , 46, 138: Power supply unit 42, 142: Sensor control unit 44, 144: Fire sensor unit 45, 145: Notification indicator 50: Environmental monitoring control unit 52: Observation unit 100: P-type fire receiver 116: On / off Fire detector 116a: Fitting structure 122: Line receiving unit 140: Alarm circuit unit

Claims (6)

In a fire alarm system in which a fire detector is connected to a fire receiver via a detector base.
An environmental monitoring means provided between the detector base and the fire detector to observe the installation environment and transmit the environmental observation value to the fire receiver.
A receiver control unit provided in the fire receiver, which receives a signal from the fire detector to output a fire alarm, and receives and notifies the environmental observation value from the environmental monitoring means.
A fire alarm system characterized by the fact that
In the fire alarm system according to claim 1,
The environmental monitoring means is a fire alarm system that observes at least one of temperature, humidity, fine particulate matter (PM), illuminance, radiation, vibration, noise, and pests in the installation environment.
In the fire alarm system according to claim 1 or 2.
The environmental monitoring means is provided with a first fitting structure that is electrically and mechanically detachably fitted to the sensor base on the mounting surface with the sensor base, and the mounting surface with the fire detector. A fire alarm system characterized in that a second fitting structure is provided in which the fire detector is electrically and mechanically detachably fitted to the fire detector.
In the fire alarm system according to any one of claims 1 to 3,
A unique address is set for the fire detector, and the same address is set for the environmental monitoring means arranged in the fire detector.
The receiver control unit of the fire receiver transmits a call signal specifying the address, and then transmits the call signal.
When the fire detector determines the ringing signal at an address that matches its own address, it transmits a response signal of the detector detection value to the fire receiver.
When the environmental monitoring means determines the ringing signal of the address matching the self-address, the response signal of the environmentally observed value is sent to the fire receiver after a predetermined time based on the time related to the transmission of the sensor detection value. A fire alarm system characterized by transmitting.
In the fire alarm system according to claim 4,
The receiver control unit is a fire alarm system characterized in that when a fire is detected, the operation of the environmental monitoring means is stopped.
In the fire alarm system according to claim 5,
When the receiver control unit detects a predetermined fire recovery operation after detecting a fire, the receiver control unit transmits an environmental monitoring stop release signal to a signal line to release the stop operation of the environmental monitoring means. Notification equipment.

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