JP2020133195A - Fire alarm system, sensor, and control method - Google Patents

Abstract

To provide a fire alarm system capable of appropriately unlocking in an emergency according to a fire occurrence state.SOLUTION: A fire alarm system, which includes a receiver, a first device connected to the receiver and transmitting a fire signal relating to a fire to the receiver in response to a human operation, and a second device for transmitting the fire signal to the receiver under a condition different from the human operation, is configured such that a plurality of the first devices and the second devices can be connected to the receiver; and the receiver includes a determination unit that is configured to, when receiver receives the fire signal from either the first device or the second device, based on a determination rule according to whether or not the fire signal is received from a non-transmission source device different from the transmission source device which is the transmission source of the fire signal, determine whether or not an emergency unlocking, which is performed in an emergency, is to be performed in a predetermined area corresponding to the transmission source device.SELECTED DRAWING: Figure 2

Description

The present invention relates to fire alarm systems, detectors, and control methods.

In a high-security system that prevents illegal entry into a room, there is a technique for performing emergency unlocking (panic opening) that automatically unlocks a room door in an emergency (see, for example, Patent Document 1). As a result, the person performing the rescue or the like can enter and leave from the outside. Patent Document 1 discloses a technique for automatically unlocking a door when two or more sensors are activated among a plurality of various disaster prevention sensors provided in a room such as a laboratory. As a result, even if a worker in the room cannot open the door due to some accident, an emergency response can be taken from the outside.
On the other hand, the emergency unlocking technology is used to open a secure door when a fire breaks out by linking with a fire alarm system.

Japanese Unexamined Patent Publication No. 11-134570

However, in the fire alarm system, the emergency lock may be unlocked by pressing the push button of the transmitter or picking up the handset of the emergency telephone device. Therefore, even if a fire does not actually occur, it is desirable to prevent misuse such as pretending to be a fire and unlocking in an emergency. However, when the transmitter or the like is operated when a fire actually occurs, it is necessary to unlock it in an emergency. That is, in the fire alarm system, it is necessary to appropriately unlock in an emergency according to the situation of fire occurrence.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fire alarm system, a detector, and a control method capable of appropriately unlocking in an emergency according to a fire occurrence situation. There is.

In order to solve the above-mentioned problems, one embodiment of the present invention includes a receiver, a first device that connects to the receiver and transmits a fire signal related to a fire to the receiver based on a human operation. A fire alarm system comprising a second device that transmits the fire signal to the receiver based on conditions different from human operation, and capable of connecting a plurality of the first device and the second device to the receiver. In the above, when the receiver receives the fire signal from either the first device or the second device, the fire is fired from a non-source device different from the source device that is the source of the fire signal. A determination unit that determines whether or not to perform emergency unlocking, which is an emergency unlocking, in a predetermined area corresponding to the source device, based on a determination rule according to whether or not a signal is being received. It is a fire alarm system equipped with.

Further, in the fire alarm system according to the embodiment of the present invention, when the source device is the first device and the fire signal is not received from the non-source device, the determination unit unlocks the emergency. Is not performed.

Further, in one embodiment of the present invention, the determination unit determines that the emergency unlocking is performed when there are a plurality of the source devices.

Further, in one embodiment of the present invention, the second device transmits a detection result regarding a fire and the fire signal based on the detection result to the receiver, and the determination unit is the first device to transmit. When the second device, which is a device and is installed within a predetermined range from the place where the source device is provided, receives the sensing result of a predetermined threshold value or more, the emergency unlocking is performed. Is determined to be performed.

Further, in one embodiment of the present invention, when the source device is the first device and the fire signal is not received from the non-source device, the determination unit outputs the fire signal from the source device. When a predetermined time or more has passed since the reception, it is determined that the emergency unlocking is performed.

Further, in one embodiment of the present invention, a disaster prevention center communication device is further provided, the receiver is communicably connected to the disaster prevention center communication device, and the disaster prevention center communication device is a fire corresponding to the fire signal. Is transmitted to the receiver, and the determination unit determines that the fire signal is received and, when the confirmation signal is received, the emergency unlocking is performed. ..

Further, in one embodiment of the present invention, a base portion for installing a sensor at an installation location, a sensing portion that is detachably connected to the base portion to detect a fire at the installation location, the sensing unit, and the above. It is a detector provided with a transmission control unit that does not transmit a fire signal according to the detection result regarding fire when the base unit is not connected.

Further, one embodiment of the present invention includes a receiver, a first device that connects to the receiver and transmits a fire signal related to a fire to the receiver based on a human operation, and conditions different from those of a human operation. A method for controlling the receiver in a fire alarm system comprising a second device for transmitting the fire signal to the receiver based on the above, and a plurality of the first device and the second device can be connected to the receiver. When the fire signal is received from either the first device or the second device, the fire signal is received from a non-source device other than the source device that is the source of the fire signal. This is a control method for determining whether or not to perform emergency unlocking, which is an emergency unlocking, in a predetermined area corresponding to the source device, based on a determination rule according to whether or not the device is used. ..

As described above, according to the present invention, it is possible to appropriately unlock in an emergency according to the situation of fire occurrence.

It is a block diagram which shows the configuration example of the fire alarm system 1 of 1st Embodiment. It is a block diagram which shows the structural example of the receiver 10 of 1st Embodiment. It is a figure which shows the structural example of the information stored in the storage part 107 of the 1st Embodiment. It is a flowchart which shows the operation example of the receiver 10 of 1st Embodiment. It is a block diagram which shows the structural example of the sensor 20 of the 2nd Embodiment. It is a figure which shows the structural example of the circuit of the sensor 20 of 2nd Embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration example of the fire alarm system 1 of the first embodiment. The fire alarm system 1 includes, for example, a receiver 10, a transmitter 20, an emergency telephone device 30, a detector 40, an electronic key control device 50, a disaster prevention center communication device 60, and a monitored device 70. Here, the transmitter 20 and the emergency telephone device 30 are examples of the "first device". Further, the sensor 40 is an example of the “second device”.

The receiver 10 is communicably connected to the transmitter 20, the emergency telephone device 30, the sensor 40, and the electronic key control device 50, and exchanges various signals related to the fire.
The transmitter 20 is a device that transmits a fire signal to the receiver 10 when the push button is pressed. The emergency telephone device 30 is a device that transmits a fire signal to the receiver 10 when the receiving device is picked up. That is, the transmitter 20 and the emergency telephone device 30 are devices for transmitting a fire signal by human operation, and are an example of the "first device".

The sensor 40 is a device that detects a fire at the installation location where the sensor 40 is installed and transmits the detection result to the receiver 10 on a regular basis or in accordance with a request from the receiver 10. The detector 40 is to measure the degree of various phenomena that may occur with the occurrence of a fire, such as smoke, heat, or flame, as a sense of fire. The degree of smoke is, for example, smoke concentration. The degree of heat is, for example, temperature. The degree of flame is, for example, the amount of infrared rays.
When the detection result is equal to or higher than a predetermined threshold value, the detector 40 transmits a fire signal indicating that a fire has been detected to the receiver 10. That is, the sensor 40 is a device that transmits a fire signal under conditions different from those operated by humans, and is an example of a "second device".

The electronic key control device 50 is a device that locks or unlocks an electronic key provided in an automatic door of a building, an entrance / exit gate, or a door provided at an entrance / exit of each room in the building.
The electronic key control device 50 unlocks the electronic key when a predetermined authentication process is normally performed in a normal time when no fire has occurred. The authentication process here is a process for authenticating entry / exit to a building. For example, when a pre-registered IC card is held over a card reader, entry / exit of a person holding the IC card is permitted. It is a process.
In an emergency when a fire breaks out, the electronic key control device 50 unlocks the electronic key based on a control signal instructing the receiver 10 to unlock the electronic key. As a result, the automatic door will be opened, the entrance / exit gate can be passed without holding an IC card, people inside the building can evacuate immediately, and people who extinguish or rescue fire from outside the building can do so. You will be able to enter the room. The unlocking of the electronic key by the electronic key control device 50 in an emergency is an example of "emergency unlocking".

In the example of FIG. 1, one transmitter 20, one emergency telephone device 30, and one sensor 40 are connected to the receiver 10, but the present invention is not limited to this. A plurality of transmitters 20, emergency telephone devices 30, and detectors 40 may be connected to the receiver 10 in total.
Further, in addition to the electronic key control device 50, other monitoring devices and control devices such as a gas leak alarm, a fire door, and a smoke damper may be connected to the receiver 10. In this case, the receiver 10 is. It receives the monitoring results from these monitoring devices and transmits signals to control the control devices to these control devices.

Further, the receiver 10 is communicably connected to the disaster prevention center communication device 60, which is a communication device of the disaster prevention center. The disaster prevention center here is an organization that monitors the building from the viewpoint of disaster prevention in the building, and responds to various monitoring devices such as fires, elevator failures, power outages, water leaks, and emergency calls from users. .. For example, when a disaster prevention center receives an alarm signal indicating the occurrence of a fire, security guards or the like rush to the site to confirm and report the fire, or take emergency measures.

The disaster prevention center communication device 60 receives an alarm signal from the receiver 10 indicating that a fire may have occurred. When a fire is confirmed by a security guard or the like corresponding to the alarm signal, the disaster prevention center communication device 60 transmits a confirmation signal indicating that the fire has been confirmed to the receiver 10.
Further, the disaster prevention center communication device 60 is communicably connected to the monitored device 70. The monitoring target device 70 is a device that transmits an abnormality alarm signal to the disaster prevention center communication device 60 when an abnormality in the object to be monitored is detected by the disaster prevention center. The object to be monitored by the disaster prevention center is an infrastructure system in a building, for example, an elevator device, an electric monitoring device, a water supply monitoring device, and the like.

FIG. 2 is a block diagram showing a configuration example of the receiver 10 of the first embodiment. The receiver 10 includes, for example, a communication unit 101, a determination unit 102, a control unit 103, a display unit 104, an input unit 105, an output unit 106, and a storage unit 107.

The communication unit 101 communicates with the transmitter 20, the emergency telephone device 30, the sensor 40, and the electronic key control device 50. The communication unit 101 receives a fire signal from the transmitter 20, the emergency telephone device 30, and the detector 40. Further, the communication unit 101 transmits a control signal to the electronic key control device 50.
In addition, the communication unit 101 communicates with the disaster prevention center communication device 60. The communication unit 101 transmits a fire signal to the disaster prevention center communication device 60. The communication unit 101 receives a confirmation signal from the disaster prevention center communication device 60.

The determination unit 102 determines whether or not to perform emergency unlocking based on the fire signal received by the communication unit 101. In the following description, among the transmitter 20, the emergency telephone device 30, and the detector 40, the device that transmits the fire signal to the receiver 10 is referred to as a “source device”. Further, among the transmitter 20, the emergency telephone device 30, and the sensor 40, a device different from the source device is referred to as a “non-source device”.

The determination unit 102 opens in an emergency in a predetermined area corresponding to the source device based on a determination rule according to the type of the source device and whether or not a fire signal is received from the non-source device. Determine whether or not to unlock the lock in an emergency.

Here, the type of the source device is the type of the device that has transmitted the fire signal, and is information corresponding to whether or not the fire signal has been transmitted by human operation. For example, when the type of the source device is the transmitter 20 or the emergency telephone device 30, it indicates that the fire signal has been transmitted by human operation. On the other hand, when the type of the source device is the sensor 40, it indicates that the fire signal was transmitted based on the detection result different from the human operation.

The judgment rule according to whether or not a fire signal is received from the non-source device is that when the fire signal is transmitted by the source device, the non-source device detects a fire or a warning against a fire. This is a rule for determining whether the fire notification system 1 has been abused or whether a fire has actually occurred. For example, when a fire signal is transmitted by the source device, if the fire signal is also transmitted by the non-source device, the fire is detected in the non-source device as well, and it is possible that a fire actually occurred. Highly sexual. Alternatively, when the non-source device is the detector 40, if a detection result of a level that is not at the level of transmitting a fire signal but at a level that warns of a fire is detected, the non-source device also warns against a fire. It has been detected and it is highly possible that a fire actually broke out. When there is a high possibility that a fire actually occurred, it is necessary to unlock in an emergency. On the other hand, when the fire signal is not transmitted by the non-source device and the detection result of the level to warn of fire is not detected when the non-source device is the sensor 40, the source device does not detect the fire signal. A fire signal was sent, but no fire or fire alert was detected in the non-source device. In such a case, since there is a high possibility that the fire alarm system 1 has been abused, it is necessary to prevent the emergency unlocking.

The determination unit 102 is an emergency when the source device is the transmitter 20, the emergency telephone device 30, that is, the device to which the fire signal is transmitted by human operation, and the fire signal is not transmitted from the non-source device. Judge that the lock will not be unlocked.

Further, the determination unit 102 may determine that the lock is to be unlocked in an emergency when there are a plurality of source devices.

Further, the determination unit 102 is a transmitter 20 or an emergency telephone device 30, that is, a device for transmitting a fire signal by human operation, and a predetermined source device is provided from a place where the source device is provided. When a detection result regarding a fire equal to or higher than a predetermined threshold value is detected from the detector 40 installed within the range, it may be determined to unlock in an emergency.
Here, which area the sensor 40 is installed to watch out for may be stored in advance in the storage unit 107, for example. In this case, the determination unit 102 acquires by referring to the storage unit 107 which area the sensor 40 in the fire alarm system 1 is alert to. Then, the determination unit 102 determines, for example, that the emergency unlocking is performed when the detection result by the sensor 40 that alerts the same area as the alert area that the transmission source device warns is equal to or more than a predetermined threshold value.
The predetermined threshold value used for the determination unit 102 here may be a threshold value different from the threshold value used for determining whether or not the sensor 40 transmits a fire signal. The predetermined threshold value here is a value smaller than the threshold value for transmitting a fire signal, but is a value that should be watched because it may lead to the occurrence of a fire. For example, when a fire signal is transmitted when the smoke concentration of 7% is detected by the sensor 40, the determination unit 102 determines the smoke concentration from the sensor 40 installed within a predetermined range from the device that transmitted the fire signal. When 3% or more is detected, it is determined that the emergency unlocking is performed.

Further, the determination unit 102 is a case where the source device is the transmitter 20, the emergency telephone device 30, that is, the device to which the fire signal is transmitted by human operation, and the fire signal is not transmitted from the non-source device. , It may be determined that the emergency unlocking is performed after a predetermined time or more has elapsed from the transmission of the fire signal from the source device.

Further, the determination unit 102 opens in an emergency when a fire signal is transmitted from the transmission source device and a confirmation signal indicating that a fire corresponding to the fire signal is confirmed is transmitted from the disaster prevention center communication device 60. It may be determined that the lock is to be performed.

The display unit 104 gives a fire alarm and a display related to the fire based on the fire signal received from the source device. The display unit 104 displays, for example, the installation location of the source device that outputs the fire signal as the location where the fire has occurred, as well as the display indicating the occurrence of the fire.
The input unit 105 is, for example, an operation panel or an operation button provided on the receiver 10. A signal that is operated and input by a building manager, a guard, a guard, or the like is input to the input unit 105. The operation input signal by the building manager is, for example, a signal for notifying an evacuation order, evacuation guidance, alarm cancellation, training, or the like.
The output unit 106 outputs a fire alarm based on the fire signal received from the source device. Further, the output unit 106 outputs an announcement according to the content input to the input unit 105.

The control unit 103 comprehensively controls the receiver 10. When the determination unit 102 determines that the lock is to be unlocked in an emergency, the control unit 103 transmits a control signal indicating the unlocking of the electronic key to the electronic key control device 50 via the communication unit 101. Further, the control unit 103 causes the determination unit 102, the display unit 104, and the output unit 106 to output the fire signal received from the transmission source device acquired by the communication unit 101, for example. Further, the control unit 103 causes the output unit 106 to output the content input to the input unit 105, or causes the source device to transmit the content input to the input unit 105 via the communication unit 101.

The storage unit 107 stores installation information regarding the source device to which the receiver 10 is connected. This installation information is information indicating the installation location of the device to which the receiver 10 is connected. Hereinafter, the installation information will be described with reference to FIG.

FIG. 3 is a diagram showing a configuration example of information stored in the storage unit 107 of the first embodiment.
As shown in FIG. 3, the address information includes, for example, an address number, a device, a device type, an installation location, and each item of a sensor installed within a predetermined range. The address number indicates the number of the address used by the receiver 10 for communication. The name of the source device of the communication destination corresponding to the address number is indicated on the device.

The device type indicates a trigger when the source device of the communication destination transmits a fire signal. In this example, since the transmitter 20 and the emergency telephone device 30 transmit the fire signal by human operation, the transmission type of the transmitter 20 and the emergency telephone device 30 is shown as "human operation". Further, since the sensor 40 transmits a fire signal based on the detection result, the transmission type of the sensor 40 is indicated as "sensation result".

The installation location indicates the installation location of the source device of the communication destination corresponding to the address number. Further, the detectors installed within a predetermined range are indicated with the address numbers of the detectors 40 installed within a predetermined range from the installation location of the source device of the communication destination corresponding to the address number. In this example, the transmitter 20 having the address number 001 is installed in front of the common area elevator on the south 1st floor of the main building, and the sensor 40 having the address number 003 is installed within a predetermined range from the common area elevator.

FIG. 4 is a flowchart showing an operation example of the receiver 10 of the first embodiment.
The receiver 10 receives the fire signal (step S10). The receiver 10 notifies the disaster prevention center communication device 60 of an alarm signal indicating that the fire signal has been received.
The receiver 10 determines whether or not the source device is the transmitter 20 or the emergency telephone device 30 (step S11).
When the source device is the transmitter 20 or the emergency telephone device 30, the receiver 10 determines whether or not fire signals have been received from a plurality of devices (step S12). For example, when the receiver 10 receives a fire signal from another device within a predetermined time from the time when the fire signal is first received, it determines that the fire signal has been received from a plurality of devices.

When the receiver 10 determines that the fire signal is not received from a plurality of devices, the detection result of the detector 40 installed near the place where the source device that transmitted the fire signal is installed is predetermined. It is determined whether or not it is equal to or higher than the threshold value (step S13).
In step S13, the receiver 10 determines whether or not a confirmation signal for the alarm signal has been transmitted from the disaster prevention center communication device 60 when the detection result of the detector 40 installed in the vicinity is less than a predetermined threshold value. (Step S14). The receiver 10 determines, for example, that the confirmation signal for the warning signal has been transmitted when the confirmation signal is received within a predetermined time after the warning signal is transmitted to the disaster prevention center communication device 60.

When the receiver 10 determines in step S14 that the confirmation signal is not transmitted from the disaster prevention center communication device 60, it determines whether or not a predetermined time or more has elapsed since receiving the first fire signal (step S15). ).

When the receiver 10 determines that the source device is the sensor 40 in step S11 and the fire signal is received from a plurality of devices in step S12, the detection result of the sensor 40 installed nearby in step S13. Is equal to or greater than a predetermined threshold value, if a confirmation signal is received within a predetermined time in step S14, or if a predetermined time or more has elapsed since the first fire signal was received in step S15, emergency unlocking is performed. It is determined that this is to be performed, and a control signal indicating unlocking of the electronic key is transmitted to the electronic key control device 50 (step S16).

As described above, in the fire notification system 1 of the first embodiment, the receiver 10 is the transmission source of the communication unit 101 that receives the fire signal, the transmitter 20, the emergency telephone device 30, and the detector 40. A determination unit 102 for determining whether or not to perform emergency unlocking in a predetermined area corresponding to the source device is provided based on a determination rule according to the state of the device and the non-source device. As a result, in the fire alarm system 1 of the first embodiment, for example, the fire alarm system 1 is abused based on not only the fire signal being transmitted but also the states of the source device and the non-source device. If it is judged that there is a high possibility that a fire signal has been transmitted, the emergency unlocking will not be performed. If it is judged that there is a high possibility that a fire has actually occurred, the emergency unlocking will be performed. Because it can be done, it can be properly unlocked in an emergency depending on the situation of the fire.

Further, in the fire notification system 1 of the first embodiment, in the determination unit 102, the source device is the transmitter 20 or the emergency telephone device 30, and the communication unit 101 does not receive the fire signal from the non-source device. In that case, it is determined that the emergency unlocking is not performed. As a result, in the fire alarm system 1 of the first embodiment, if the fire signal is transmitted by human operation and the fire signal is not transmitted from another device, it is highly possible that the fire alarm system 1 has been abused. It is possible to judge and prevent the emergency unlocking.

Further, in the fire alarm system 1 of the first embodiment, the determination unit 102 determines that the emergency unlocking is performed when there are a plurality of source devices. As a result, in the fire alarm system 1 of the first embodiment, when fire signals are transmitted from a plurality of devices, it is determined that there is a high possibility that a fire actually occurred, and the fire is unlocked in an emergency. can do.

Further, in the fire notification system 1 of the first embodiment, the detector 40 transmits a detection result related to the fire and a fire signal based on the detection result, and the communication unit 101 receives the detection result from the detector 40. In the determination unit 102, the source device is the transmitter 20 or the emergency telephone device 30, and the sensor 40 installed within a predetermined range from the place where the source device is provided is set to a predetermined threshold value or more. When the detection result of is received by the communication unit 101, it is determined that the unlocking is performed in an emergency. As a result, in the fire notification system 1 of the first embodiment, even if the fire signal is transmitted by human operation and the fire signal is not transmitted from another device, the detection provided around the source device is provided. If the detection result by the device 40 exceeds a predetermined warning level, it is possible to determine that there is a high possibility that a fire actually occurred and to perform emergency unlocking.

Further, in the fire notification system 1 of the first embodiment, the receiver 10 is communicably connected to the disaster prevention center communication device 60, and the communication unit 101 confirms a fire corresponding to the fire signal from the disaster prevention center communication device 60. Upon receiving the confirmation signal indicating that, the determination unit 102 determines that the emergency unlocking is performed when the fire signal is received and the confirmation signal is received. As a result, in the fire notification system 1 of the first embodiment, when a fire is confirmed by the guards of the disaster prevention center, it is determined that there is a high possibility that a fire actually occurred and the lock is unlocked in an emergency. Can be done.

In the above-described embodiment, the case where the receiver 10 controls the electronic key control device 50 has been described as an example, but the present invention is not limited to this. For example, the disaster prevention center communication device 60 may control the electronic key control device 50. In this case, the receiver 10 notifies the disaster prevention center communication device 60 of the determination result by the determination unit 102. Then, the disaster prevention center communication device 60 controls the electronic key control device 50 according to the determination result notified from the receiver 10. Alternatively, the disaster prevention center communication device 60 may be configured to include the determination unit 102. In this case, when the receiver 10 receives the fire signal or the detection result from the transmitter 20, the emergency telephone device 30, and the detector 40, the receiver 10 notifies the disaster prevention center communication device 60 of the contents thereof. The disaster prevention center communication device determines whether or not to perform emergency unlocking based on the fire signal and the detection result notified from the receiver 10, and controls the electronic key control device 50 according to the determination result.

(Second Embodiment)
Next, the second embodiment will be described. This embodiment is different from the above-described embodiment in that it suppresses the transmission of a fire signal due to an unauthorized operation of the sensor 40.

FIG. 5 is a block diagram showing a configuration example of the sensor 40 of the second embodiment. The detector 40 of the present embodiment is an on / off type detector that outputs a fire signal by short-circuiting the line when a fire is detected.
The sensor 40 includes, for example, a base unit 401, a sensing unit 402, and a transmission control unit 403.
The base portion 401 is fixed to the ceiling surface or wall surface of the installation location where the sensor 40 is installed, and is a base that makes it easy to attach the sensor 40 by detachably connecting the sensor portion 402.
The sensing unit 402 is detachably connected to the base unit 401 to detect a fire at the installation location. The transmission control unit 403 controls the transmission of a fire signal according to the detection result regarding the fire. The transmission control unit 403 does not transmit a fire signal when the base unit 401 and the sensing unit 402 are not connected.

FIG. 6 is a diagram showing a configuration example of the circuit of the sensor 40 of the second embodiment. The sensor 40 of the present embodiment is connected to a fire alarm line L and a common line C constituting a fire line K which is a communication line between the receiver 10 and the sensor 40.
The base portion 401 includes, for example, terminals T1, T2, and T5 to T8. The terminal T1 is connected to the fire alarm line L, and the terminal T6 is connected to the common line C. Further, the end of the connection line connecting the terminals T1 and T2 on the terminal T2 side is connected to the terminal T3 of the sensing unit 402. Further, the end of the connection line connecting the terminals T5 and T8 on the terminal T5 side is connected to the terminal T4 of the sensing unit 402, and the end on the terminal T8 side is connected to the terminal T10 of the transmission control unit 403. Further, the end of the connection line connecting the terminals T6 and T7 on the terminal T7 side is connected to the terminal T9 of the transmission control unit 403.

The sensing unit 402 includes, for example, terminals T3, T4, and switch SW1. The terminal T3 is connected to the terminal T2 of the base portion 401. The terminal T4 is connected to the terminal T5 of the base portion 401. Switch SW1 connects or disconnects terminals T3 and T4.
The switch SW1 connects terminals T3 and T4 to short-circuit the line when a fire is detected, such as when the smoke concentration exceeds a predetermined threshold value.

The transmission control unit 403 includes, for example, terminals T9 and T10, and a switch SW2. The terminal T9 is connected to the terminal T7 of the base portion 401. The terminal T10 is connected to the terminal T8 of the base portion 401. The switch SW2 connects or disconnects the terminals T9 and T10.
The switch SW2 connects the terminals T9 and T10 when the base unit 401 and the sensing unit 402 are connected, and conducts between the terminals T9 and T10 when the base unit 401 and the sensing unit 402 are not connected. To shut off.

With such a circuit configuration, the sensor 40 is a fire alarm line L and a common line when the base unit 401 and the sensor unit 402 are connected and when the terminals T3 and T4 are connected. C short-circuits and outputs a fire signal.
On the other hand, in the sensor 40, when the base unit 401 and the sensing unit 402 are not connected, when the terminals T3 and T4 are connected, the fire alarm line L and the common line C are not short-circuited. Do not output a fire signal.

As described above, the sensor 40 of the second embodiment is detachably connected to the base portion 401 for installing the detector 40 at the installation location, and is detachably connected to the base portion 401 to detect a fire at the installation location. When the unit 402 and the base unit 401 are not connected, a transmission control unit 403 that does not transmit a fire signal according to a detection result regarding a fire is provided. As a result, the sensor 40 of the second embodiment outputs a fire signal even when a malicious person illegally operates the sensor 40 to output a fire signal. It can be suppressed.

For example, the conventional sensor 40 does not have the switch SW2, and the terminals T9 and T10 are connected regardless of whether the base unit 401 and the sensor unit 402 are connected. Therefore, when a malicious person illegally operates the sensor 40 to output a fire signal, the sensor unit 402 is removed and the terminals T2 and T5 of the base unit 401 are short-circuited. As a result, the fire alarm line L and the common line C are short-circuited, and a fire signal is illegally output.

On the other hand, in the sensor 40 of the present embodiment, the switch SW2 connects the terminals T9 and T10 only when the base unit 401 and the sensor unit 402 are connected. As a result, when a malicious person removes the sensing unit 402, the connection between the switch SW2 terminals T9 and T10 is cut off. Therefore, even if the terminals T2 and T5 of the base portion 401 are short-circuited due to an illegal operation, the fire alarm line L and the common line C are not short-circuited, and the fire signal is not output illegally. That is, it is possible to suppress the output of a fire signal due to an illegal operation.

In the above description, the transmission control unit 403 exemplifies and describes a configuration in which the terminals T9 and T10 are mechanically connected or disconnected by the switch SW2, but the present invention is not limited thereto. The transmission control unit 403 may be operated by, for example, program control. In this case, for example, the transmission control unit 403 acquires the detection result by the sensor that detects the connection state between the base unit 401 and the sensing unit 402, and a fire signal when the base unit 401 and the sensing unit 402 are connected. Is determined to be transmitted.

In the above-described embodiment, the door is opened in the direction in which the traveling direction is from the first device or the second device (that is, at least one of the transmitter 20, the emergency telephone device 30, or the sensor 40) toward the exit side of the building. When the opening operation is performed, the emergency unlocking is performed regardless of the determination result of the determination unit 102, and the door is opened in a direction in which the traveling direction is not the direction from the first device or the second device toward the exit side. When this is done, the emergency unlocking may be performed according to the determination result of the determination unit 102.
In this case, for example, the fire alarm system 1 includes a door open / close detector. The door open / close detector detects the operation of opening the automatic door of the building, the entrance / exit gate, or the door provided at the entrance / exit of each room in the building. Then, when the door open / close detector detects an operation of opening the door, it detects whether or not the operation is performed from the inside of the building. The door open / close detector is provided on the building side of the door, for example, and detects that an operation of opening the door has been performed (for example, the handle has been pushed or pulled). The door open / close detector transmits the detection result to the receiver 10.
The determination unit 102 of the receiver 10 has detected a fire signal from at least one of the transmitter 20, the emergency telephone device 30, or the detector 40, and the operation of opening the door from the inside of the building is detected. In that case, it is determined that the emergency unlocking is performed. On the other hand, when the determination unit 102 of the receiver 10 receives the fire signal and the operation of opening the door is not detected from the inside of the building, the fire alarm system 1 is abused by the determination method described above. If it is judged that there is a high possibility, the emergency unlocking is not performed, and if it is judged that there is a high possibility that a fire actually occurred, it is determined that the emergency unlocking is performed.

All or part of the fire alarm system 1, the receiver 10 and the detector 40 in the above-described embodiment may be realized by a computer. In that case, the program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, a "computer-readable recording medium" is a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, and dynamically holds the program for a short period of time. It may also include a program that holds a program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or a client in that case. Further, the above program may be for realizing a part of the above-mentioned functions, and may be further realized for realizing the above-mentioned functions in combination with a program already recorded in the computer system. It may be realized by using a programmable logic device such as FPGA.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the design and the like within a range not deviating from the gist of the present invention are also included.

1 ... Fire alarm system 10 ... Receiver 101 ... Communication unit 102 ... Judgment unit 103 ... Control unit 104 ... Display unit 105 ... Input unit 106 ... Output unit 107 ... Storage unit 20 ... Transmitter 30 ... Emergency telephone device 40 ... Sensor 401 ... Base unit 402 ... Sensing unit 403 ... Transmission control unit

Claims (8)

The receiver, a first device that connects to the receiver and transmits a fire signal related to a fire to the receiver based on human operation, and the receiver that transmits the fire signal based on conditions different from human operation. In a fire alarm system comprising a second device for transmitting to the receiver and capable of connecting a plurality of the first device and the second device to the receiver.
The receiver
When the fire signal is received from either the first device or the second device, whether or not the fire signal is received from a non-source device other than the source device that is the source of the fire signal. A determination unit that determines whether or not to perform emergency unlocking, which is an emergency unlocking, in a predetermined area corresponding to the source device, based on the determination rule according to the above.
A fire alarm system equipped with. The fire alarm according to claim 1, wherein the determination unit determines that the emergency unlocking is not performed when the source device is the first device and the fire signal is not received from the non-source device. system. The fire alarm system according to claim 1 or 2, wherein the determination unit determines that the emergency unlocking is performed when there are a plurality of source devices. The second device transmits a fire detection result and a fire signal based on the detection result to the receiver.
In the determination unit, the source device is the first device, and the second device installed within a predetermined range from the place where the source device is provided is said to have a predetermined threshold value or more. The fire alarm system according to any one of claims 1 to 3, wherein when the detection result is received, it is determined that the emergency unlocking is performed. In the determination unit, when the source device is the first device and the fire signal is not received from the non-source device, a predetermined time or more has elapsed since the fire signal was received from the source device. The fire alarm system according to any one of claims 1 to 4, which determines that the emergency unlocking is performed when the fire alarm system is used. Further equipped with disaster prevention center communication device,
The receiver is communicably connected to the disaster prevention center communication device.
The disaster prevention center communication device transmits a confirmation signal indicating that a fire corresponding to the fire signal has been confirmed to the receiver.
The fire according to any one of claims 1 to 5, wherein the determination unit determines that the emergency unlocking is performed when the fire signal is received and the confirmation signal is received. Notification system. The base where the sensor is installed at the installation location, and
A sensing unit that is detachably connected to the base portion and detects a fire at the installation location,
A detector including a transmission control unit that does not transmit a fire signal according to a detection result regarding a fire when the sensing unit and the base unit are not connected. The receiver, a first device that connects to the receiver and transmits a fire signal related to a fire to the receiver based on human operation, and the receiver that transmits the fire signal based on conditions different from human operation. A method for controlling the receiver in a fire alarm system, which comprises a second device for transmitting to the receiver and capable of connecting a plurality of the first device and the second device to the receiver.
When the determination unit receives the fire signal from either the first device or the second device, the determination unit receives the fire signal from a non-source device other than the source device that is the source of the fire signal. Based on the determination rule according to whether or not the device is used, it is determined whether or not to perform emergency unlocking, which is an emergency unlocking, in a predetermined area corresponding to the source device.
Control method.

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