JP7417385B2 - Disaster prevention support system - Google Patents

Description

The present invention relates to a disaster prevention support system that supports fire alarm equipment in cooperation with a mobile terminal.

Conventionally, by linking fire alarm equipment, support servers, and mobile terminals such as mobile phones via the Internet, it does not affect the mobility of lifeguards, and the camera equipment of mobile terminals can be used to monitor the situation at the scene. A system has been proposed that can display images of emergency situations and notify emergency contacts.

Japanese Patent Application Publication No. 2013-089076 JP 2017-117472 Publication

By the way, in fire alarm equipment, when a fire sensor reaches a predetermined fire detection concentration, for example, a fire signal is sent to a receiver to start an accumulation operation, and a predetermined accumulation condition is satisfied. Sometimes it is determined to be a fire, but before it is determined to be a fire, a precursor phenomenon of a fire such as a gradual increase in smoke concentration, such as a smoldering fire, is observed, and this precursor phenomenon of a fire is determined to be a fire. If you know before it happens, you can quickly and appropriately deal with both fire and non-fire situations.

An object of the present invention is to provide a disaster prevention support system that detects a precursor phenomenon of a fire and enables quick and appropriate response through cooperation between a fire alarm system, a support device, and a mobile terminal.

(Disaster prevention support system)
The present invention provides a disaster prevention support system in which a fire alarm system having a receiver and a fire detector installed in a fire prevention object, a support device, and a mobile terminal carried by a person concerned with the fire prevention object are connected via a network. And ,
The support device detects the location of the mobile terminal in advance and transmits predetermined disaster prevention support information to the fire alarm equipment and mobile terminals located around it, and when the fire alarm equipment determines that there is a sign of a fire, the support device sends the fire alarm. Sends a support activation signal to the equipment and mobile terminals located around it,
The mobile terminal is characterized in that it receives and stores the disaster prevention support information, and reads out and displays the stored disaster prevention support information when receiving the support activation signal.

Here, a fire sign is a precursor phenomenon that is highly likely to lead to a fire, and also includes precursor phenomena caused by non-fire factors such as cooking smoke, water vapor, and smoking smoke that have no possibility of leading to a fire.

(Display of positional relationship between flash point and mobile device)
The support activation signal includes location information of a fire point determined to be a sign of a fire ,
The disaster prevention support information includes map information of fire prevention objects,
The mobile terminal displays on the screen the positional relationship between the fire point and its own aircraft based on the location information of the fire point and the map information of the fire prevention object.

(Display of fire warning district name and countermeasure information)
The disaster prevention support information includes at least the district name indicating the installation location of the fire detector, and fire sign response information indicating the response action when a fire sign is determined,
Based on the disaster prevention support information, the mobile terminal displays on the screen the district name of the fire detector that has been determined to be a fire sign and the fire sign countermeasure information.

(On-site confirmation and response transmission)
The mobile terminal includes at least an operation instruction to check the scene and send the confirmation result in response to the fire warning information displayed, and sends a fire confirmation signal or non-fire confirmation signal via the support device by the response operation of the scene confirmation. transmitted to the receiver of the fire alarm equipment,
The receiver determines a fire and reports a fire when receiving a fire confirmation signal, and determines a non-fire and reports a non-fire when receiving a non-fire confirmation signal.

(Determination of signs of fire by receiver)
The receiver receives a fire signal when the smoke concentration or temperature detected by the fire detector satisfies a predetermined fire sign judgment accumulation condition in a state where the detected value is lower than the predetermined fire judgment value, or when a fire signal is received from a fire detector that has judged that there is a fire. When received and a predetermined fire determination accumulation operation is started, it is determined that there is a sign of a fire.

(Determination of signs of fire by fire detector)
The fire detector determines that a fire omen exists when a predetermined fire omen judgment accumulation condition is satisfied in a state where the detected value of smoke concentration or temperature is lower than a predetermined fire judgment value.

(Effects of disaster prevention support system)
According to the disaster prevention support system of the present invention, the support device such as the server detects the position of the mobile terminal carried by the person concerned with the disaster prevention object, and thereby detects the position of the mobile terminal carried by the person concerned with the disaster prevention object. The terminal is identified and disaster prevention support information is sent there and stored in advance. For example, when the receiver determines that there is a sign of a fire, it detects the fire alarm equipment or a mobile terminal located around it and sends a support activation signal. By transmitting and displaying disaster prevention support information, people at or near the fire alarm system can learn of signs of a fire and take human action, including on-site inspection, at the stage of a sign that is likely to lead to a fire. It can be carried out.

(Effects of displaying the positional relationship between the flash point and the mobile device)
In addition, the positional relationship between the fire spot determined to be a sign of a fire and their own aircraft (the person concerned's own mobile terminal) is displayed on the screen as map information on the mobile terminal of the person concerned who is in or around the fire alarm equipment. , it is possible to accurately grasp the location of the fire point and take countermeasures such as on-site confirmation.

(Effects of displaying fire warning district names and countermeasure information)
In addition, the name of the district of the fire detector targeted for judgment as a fire sign and fire sign response information are displayed on the screen of the mobile terminal of the person concerned in or around the fire alarm system, indicating that the fire sign has been determined to be a sign of fire. It is possible to know where the location is and take countermeasures according to the fire warning information.

(Effects of on-site confirmation and response transmission)
In addition, the fire alarm equipment and related parties in its surroundings check the scene according to the instructions of the fire warning information displayed on the mobile terminal and send a fire confirmation signal if there is a fire, and a non-fire confirmation signal if there is no fire. It is possible to send a response and notify a fire alarm when a fire is confirmed by the receiver, or to notify a non-fire when a non-fire is confirmed, at the stage when it is determined that it is a sign of a fire.

(Effect of fire sign determination)
Also, when the smoke concentration or temperature detected by the fire detector is lower than the predetermined fire judgment value and the predetermined fire sign judgment accumulation conditions are met, or when a fire signal is received from a fire detector that has judged that there is a fire. By determining a fire sign when a predetermined fire determination accumulation operation is started, it is possible to reliably capture a precursor phenomenon before determining a fire and determine it as a fire sign.

An explanatory diagram showing the configuration of a disaster prevention support system according to the present invention Block diagram showing the functional configuration of a mobile phone terminal Explanatory diagram showing the display screen of disaster prevention support information on a mobile phone terminal Time chart showing the operation of the disaster prevention support system

[Configuration and functions of disaster prevention support system]
(Fire alarm equipment)
As shown in FIG. 1, fire alarm equipment 10 (10-1, 10-2, 10-3) is installed in fire prevention objects such as buildings, and as shown in the fire alarm equipment 10-1 as a representative, A fire detector 16 is connected to a signal line 14 drawn out from the receiver 12 to each floor of a building, for example.

The fire alarm equipment 10 of this embodiment takes an R-type (Record-type) fire alarm equipment as an example.The fire detector 16 is set with a unique address, and the receiver 12 is operated at a predetermined cycle, for example, a one-second cycle. Sends a batch A/D conversion command signal, A/D converts the smoke concentration or temperature detection signals detected by the sensor sections of all fire detectors 16, and holds the smoke concentration detection value or temperature detection value. Then, polling is performed in which a call signal sequentially designating the sensor address is transmitted to cause each fire sensor 16 to return a response signal including a detected smoke concentration value or a detected temperature value.

(Determination of fire signs)
The fire detector 16 detects, for example, when the smoke concentration detection value reaches a predetermined preliminary fire judgment value, for example, 3%/m, which is lower than a predetermined fire judgment value, for example, 10%/m, for determining a fire by the receiver 12. It is determined that there is a preliminary fire, and a fire interrupt signal is transmitted to the receiver 12. Note that the fire interrupt signal is, for example, an all-1-bit signal that invalidates all signals being transmitted and received through the signal line 14.

The receiver 12, which has received the fire interrupt signal from the fire detector 16, transmits a group search command signal specifying the group address, performs a group search to identify the group address that responded with the fire interrupt signal, and then , sends an intra-group search command signal that sequentially specifies the sensor addresses within the searched group address, and sends the address of the fire sensor 16 that responded with a fire interrupt signal, that is, the address of the fire sensor 16 that was determined to be a preliminary fire. Identify.

Subsequently, when the smoke concentration detection value from the fire detector 16 that has determined that there is a preliminary fire satisfies a predetermined fire sign determination accumulation condition, the receiver 12 determines, for example, that the smoke concentration detection value is preliminary for a predetermined number of consecutive times. When the value exceeds the fire determination value, it is determined to be a fire sign, and a fire sign determination signal is transmitted as a transfer signal to the support server 30, and a cautionary warning (pre-alarm) indicating a preliminary fire is output.

Subsequently, when the smoke concentration detection value from the fire detector 16 that has determined that there is a preliminary fire reaches a predetermined fire determination value and satisfies a predetermined fire determination accumulation condition, the receiver 12 transmits the signal continuously for a predetermined number of times, for example. When the smoke concentration detection value exceeds the fire judgment value, it is determined that there is a fire, and a fire alarm is output by the main sound ringing or district sound ringing, as well as interlocking control of predetermined smoke prevention equipment, etc., and transfer notification to external equipment. Performs fire alarm operations including output.

Note that when the receiver 12 does not judge the fire sign, and the smoke concentration detected by the fire detector 16 reaches a predetermined preliminary fire judgment value and satisfies the predetermined fire sign judgment accumulation condition, for example, the fire sign judgment is performed a predetermined number of times in a row. Then, when the detected smoke concentration value exceeds the preliminary fire determination value, it may be determined that it is a sign of a fire, and a fire sign determination signal may be transmitted to the receiver 10.

(Support server)
A wireless LAN adapter 18 is connected to the receiver 12, and when it determines that it is a sign of a fire, it transfers and outputs a fire sign determination signal to the wireless LAN adapter 18, and functions as a support device via a wireless LAN base station 26 and the Internet 28 . It is sent to the support server 30. The fire omen determination signal includes predetermined terminal information such as the address of the fire detector 16 that is the subject of the fire omen determination, and the district name indicating the installation location.

The support server 30 is communicatively connected to a mobile phone terminal 20 such as a smartphone via the Internet 28, a mobile phone network 22, and a mobile phone base station 24.

The support server 30 provides mobile phone terminals 20 (20-1, 20-) carried by persons concerned with the fire prevention object for each fire prevention object in which the fire alarm equipment 10 (10-1, 10-2, 10-3) is installed. 2,...) are registered in advance.

Persons involved in registering the mobile terminal identification information of the mobile terminals 20 (20-1, 20-2, ...) include disaster prevention managers and disaster prevention personnel who work at the disaster prevention center or administrator's office, and those who are responsible for the fire prevention object. This includes patrolling security company personnel and disaster prevention personnel designated for each floor of companies that have moved into the building.

The support server 30 periodically transmits a location information request signal specifying the registered mobile terminal identification information and collects the location information of the mobile phone terminals 20 (20-1, 20-2, . . . ). . The mobile phone terminal 20 is equipped with a GPS function, and upon receiving the position information request signal from the support server 30, activates the GPS function to detect the latitude and longitude indicating the current position as position information, and transmits it to the support server 30.

When the support server 30 receives location information from the mobile phone terminals 20 (20-1, 20-2, . The mobile phone terminals 20 (20-1, 20-2, ...) whose detection positions are included in the equipment installation area, for example, the fire alarm equipment 10-1 and The mobile phone terminals 20-1 and 20-2 located in the vicinity are determined, and predetermined disaster prevention support information is transmitted and stored in advance.

Disaster prevention support information includes map information (floor maps, etc.) of buildings, etc. that are subject to fire prevention, district names that indicate the address and installation location of fire detectors 16, and fire sign response information that indicates actions to be taken when a fire sign is determined. Contains at least Further, the fire sign countermeasure information includes an instruction to check the installation site of the fire detector 16 that is subject to fire sign determination, and to send a response indicating whether there is a fire or not.

(Support by receiving fire sign determination signals)
When the support server 20 receives the fire sign determination signal from the receiver 12, it acquires location information from the mobile phone terminals 20 (20-1, 20-2, . . .) registered in advance, and at that time, fire alarm equipment For example, a mobile phone terminal 20-1 located at 10-1 and a mobile phone terminal 20-2 located nearby, for example, are determined and a support activation signal is transmitted, and the mobile phone terminals 20-1 and 20-2 are stored in advance. The disaster prevention support information provided is read out and displayed on the screen.

The support activation signal transmitted from the support server 30 to the mobile phone terminals 20-1 and 20-2 includes the position information of the fire point indicating the position of the fire detector 16 that is the target of fire sign determination, and -1 and 20-2 are able to locate the fire point and own aircraft ( Map information indicating the positions of the mobile phone terminals 20-1, 20-2) is displayed on the screen.

As a result, personnel carrying mobile phone terminals 20-1 and 20-2 can grasp the location of the fire point relative to the current location from the map information displayed on the screen, and at the same time determine the location of the fire point based on the response instructions for on-site confirmation displayed on the screen. Go to the location and confirm whether there is a fire or not.

On-site confirmation of the location of the fire point based on the judgment of fire signs is done by humans, so if there is a fire, it can definitely be confirmed that it is a fire.Furthermore, since the fire is in its early stages, it is necessary to extinguish it in the initial stages using a fire extinguisher, etc. On the other hand, if the cause of the fire is smoke or steam from smoking or cooking, it can be confirmed that it is not a fire.

The person concerned who has confirmed the scene sends a fire confirmation signal or a non-fire confirmation signal to the support server 30 by touching the screen of the mobile phone terminals 20-1, 20-2, etc., and then sends a fire confirmation signal or a non-fire confirmation signal to the support server 30 from the support server 30 to the fire alarm equipment 10. -1 receiver 12.

When the receiver 12 receives a fire confirmation signal, this corresponds to the reception of a fire notification signal by pressing a button on the transmitter, so it is determined that a fire has been confirmed, and predetermined fire alarm operations, interlock control, and transfer control are performed. etc.

On the other hand, when the receiver 12 receives the non-fire confirmation signal, it stops the caution alarm associated with the preliminary fire determination, notifies the non-fire confirmation, and restores based on the restoration operation of the person in charge.

[Mobile phone terminal]
(Configuration of mobile phone terminal)
As shown in FIG. 2, the mobile phone terminal 20 is a smartphone that also has the functions of a personal mobile computer. The mobile phone control unit 32 of the mobile phone terminal 20 is realized by an LSI equipped with a CPU, memory, and various input/output interfaces, executes installed programs, and performs communication connections such as phone calls, email connections, and Internet connections, and related connections. In addition to various controls, detection of position information based on the position information request signal from the support server 30 and transmission of a response signal, reception and storage of disaster prevention support information transmitted from the support server 30, activation of support transmitted from the support server 30 Performs disaster prevention support control such as reading and displaying disaster prevention support information based on signals.

The mobile phone communication unit 34 performs mobile phone communication using the W-CDMA standard known as the third generation mobile communication system (3G) or the IMT-Advanced standard known as the fourth generation mobile communication system (4G).

The wireless LAN communication unit 36 performs wireless communication based on a wireless LAN network such as WiFi (registered trademark) or Bluetooth (registered trademark) in accordance with IEEE802.11. The wireless LAN communication unit 36 also has a function as a wireless LAN access point.

The GPS communication unit 38 performs communication to obtain the longitude and latitude of the current position using a Global Positioning System using orbiting satellites. The camera unit 40 uses a CMOS image sensor to capture images and obtain still images and moving images.

The SIM card 42 is a card that stores an IMSI (International Mobile Subscriber Identity) number, which is a number for identifying a mobile phone number, and by replacing the SIM card 42, the same mobile phone number can be used on multiple mobile phone terminals. possible.

The display 44 uses a display device such as a liquid crystal panel or an organic EL panel, and a touch panel 46 is arranged on the panel surface. The audio input/output unit 48 includes a microphone, a speaker, and an audio codec, and performs audio input/output.

The operation unit 50 receives user operations using a keypad or operation buttons to perform telephone control and the like. The memory card 52 is a removable external memory and is used for external storage of various data such as images captured by the camera unit 40.

(Disaster prevention support screen)
As shown in FIG. 3, the mobile telephone terminal 20 displays the disaster prevention support screen 54 when receiving the support activation signal from the support server 30. The disaster prevention support screen 54 displays the time of occurrence and the district name of the place of occurrence (point of fire) as fire sign occurrence information 58, following the fire sign warning message 56 of "This is a fire sign."

Next, an instruction to check the scene is given as a fire sign response instruction 60, and then map information 62 is displayed. The map information 62 displays the fire point 64 and the own aircraft 66, and the positional relationship between the two is known, and the person concerned goes to the fire point 64 from the current position of the own aircraft 66 to check on the spot whether there is a fire or not.

Subsequently, a response response instruction 68, a fire confirmation button 70, and a non-fire confirmation button 72 are provided, and when a fire is confirmed, when the fire confirmation button 70 is touched, a fire confirmation signal is sent to the support server 30, and a non-fire confirmation is confirmed. In this case, when the non-fire confirmation button 72 is touched, a non-fire confirmation signal is transmitted to the support server 30. Note that when the fire confirmation button 70 is touched and a fire confirmation signal is transmitted, the installation locations of fire extinguishing equipment such as fire extinguishers and fire hydrants may be displayed on the map information 82 to support initial fire extinguishment.

[Operation of disaster prevention support system]
As shown in FIG. 4, the support server 30 periodically transmits a location information request signal in step S1, and the mobile phone terminal 20 uses the GPS function to acquire latitude and longitude location information in step S2 to provide support. Send to server 30.

The support server 30 determines in step S3 whether the location information acquired from the mobile phone terminal 20 is located in or around the fire alarm equipment, and if it is located, transmits disaster prevention support information to the mobile phone terminal 20 in step S4. , are stored in step S5.

When the receiver 12 determines that it is a fire sign in step S6, it transmits a fire sign determination signal to the support server 30 in step S7, and also outputs a cautionary warning indicating a preliminary fire. The support server 30 that has received the fire sign determination signal transmits a position information request signal to the mobile phone terminal 20 in step S8, and the mobile phone terminal 20 operates the GPS function in step S9 and transmits the detected position information to the support server 30. Send to.

When the support server 30 determines that the location of the mobile phone terminal 20 obtained in step S10 is at or around the fire alarm equipment, it transmits a support activation signal to the mobile phone terminal 20 in step S11, and in steps S12 and S13, the support server 30 transmits the support activation signal as shown in FIG. As described above, the disaster prevention support screen is displayed, and in step S14, a fire confirmation signal or a non-fire confirmation signal is transmitted to the support server 30 based on the fire or non-fire confirmation response operation.

The support server 30 transmits a fire confirmation signal or a non-fire confirmation signal to the receiver 12 in step S15, and in step S16, when the receiver 12 receives the fire confirmation signal, it confirms a fire and performs a fire alarm operation. When a non-fire confirmation signal is received, the warning alarm is stopped, a non-fire is reported, and recovery is performed based on the recovery operation.

[Modification of the present invention]
(Determination of fire signs)
As another form of determining that it is a fire sign, the receiver 12 performs a predetermined accumulation operation when the smoke concentration detection value or temperature detection value from the fire detector 16 that is the target of the fire sign reaches a predetermined fire judgment value. It may be determined that there is a sign of failure when the process starts.

In addition, as another method for determining a fire sign, the increasing rate of change in the smoke concentration detection value or temperature detection value of the fire detector 16 is determined, and a predetermined preliminary fire judgment change is determined in which this rate of change is lower than the fire judgment change rate. It may be determined that a fire omen exists when the predetermined fire omen judgment rate is reached and a predetermined fire omen judgment accumulation condition is satisfied, for example, when the preliminary fire odor judgment change rate is exceeded a predetermined number of times in succession.

(Fire alarm equipment)
Although the above embodiment takes an R-type (Record-type) fire alarm equipment as an example, it may also be a P-type (Proprietary-type) fire alarm equipment. P-type fire alarm equipment monitors fire for each line connected to an on-off type fire detector, and the receiver only needs to determine that it is a sign of a fire when it starts fire judgment accumulation operation based on the line alarm. .

(Mobile device)
Although the above embodiment uses the mobile phone terminal 20 as the mobile terminal, a mobile terminal device such as a tablet terminal may also be used.

(network)
Further, the network between the receiver 12, the mobile phone terminal 20, and the support server 30 is not limited to the Internet 28 and the mobile phone network 22, but includes any appropriate network configuration.

(Transmitter function of mobile terminal)
In addition, in the disaster prevention support system of the present invention, the detected value of smoke concentration, for example, from the fire detector 16 received by the receiver 12 is transmitted to the support server 30, and the support server 30 sends a detected value of the smoke concentration (for example, smoke concentration %/m) or a preliminary fire sign that is a sign of a fire sign (for example, smoke concentration 1.5%/m), the mobile phone terminal located at or near the fire alarm equipment 10-1 20 (20-1, 20-2), and the mobile phone terminal 20 (20-1, 20-2) displays the transmitter image on the screen and sounds a predetermined warning sound if necessary. Output.

The person carrying the mobile phone terminal 20 (20-1, 20-2) knows that a fire warning phenomenon is occurring when the transmitter screen is displayed, and either checks the scene or has already done so. If you notice a fire precursor phenomenon that causes a fire sign or a preliminary fire sign, touch the push button of the transmitter image displayed on the screen of the mobile phone terminal 20-1, 20-2, and the support server A fire notification signal is transmitted to the receiver 12 via the receiver 30, and the receiver 12 determines that a fire has been determined and issues a fire alarm.

In addition, the receiver 12 that has received the fire report signal transmits a fire report response signal to the mobile phone terminal 20 (20-1, 20-2) via the support server 30, and displays the transmitter image displayed on the screen. The response lamp lights up to notify that the receiver 12 has received the message.

Therefore, a transmitter virtually exists in the mobile phone terminal 20 (20-1, 20-2) at the stage of a fire precursor phenomenon determined to be a fire sign or a preliminary fire sign, and a fire transmitter is actually present in the mobile phone terminal 20 (20-1, 20-2). It becomes possible to report a fire using the virtual transmitter on the mobile phone terminal 20 (20-1, 20-2) without having to go to the place where the mobile phone terminal 20 (20-1, 20-2) is installed.

(others)
Furthermore, the present invention includes appropriate modifications without impairing its objects and advantages, and is not limited by the numerical values shown in the above embodiments.

10-1 to 10-3: Fire alarm equipment 12: Receiver 14: Signal line 16: Fire detector 18: Wireless LAN adapter 20-1, 20-2: Mobile phone terminal 22: Mobile phone network 24: Mobile phone base Station 26: Wireless LAN base station 28: Internet 30: Support server 32: Mobile phone control unit 36: Wireless LAN communication unit 38: GPS communication unit 44: Display 46: Touch panel

Claims (6)

A disaster prevention support system in which a fire alarm system having a receiver and a fire detector installed in a fire prevention object, a support device, and a mobile terminal carried by a person concerned with the fire prevention object are connected via a network. ,
The support device detects the position of the mobile terminal in advance and transmits predetermined disaster prevention support information to the fire alarm equipment and the mobile terminal located around it, and when the fire alarm equipment determines that there is a sign of a fire. , transmitting a support activation signal to the fire alarm equipment and the mobile terminal located in its vicinity;
The disaster prevention support system is characterized in that the mobile terminal receives and stores the disaster prevention support information, and reads and displays the stored disaster prevention support information when receiving the support activation signal.
The disaster prevention support system according to claim 1,
The support activation signal includes position information of the fire point determined to be the fire sign ,
The disaster prevention support information includes map information of the fire prevention object,
The disaster prevention support system is characterized in that the mobile terminal displays the positional relationship between the fire point and the own device on a screen based on the position information of the fire point and the map information of the fire prevention object.
The disaster prevention support system according to claim 1,
The disaster prevention support information includes at least a district name indicating the installation location of the fire detector, and fire sign response information indicating a response action when a fire sign is determined,
The disaster prevention support system is characterized in that the mobile terminal displays on a screen the district name of the fire detector that has been determined to be a fire sign and the fire sign handling information based on the disaster prevention support information.
The disaster prevention support system according to claim 3 ,
The mobile terminal includes at least an operation instruction for checking the site and transmitting a confirmation result in response to the displayed fire sign countermeasure information, and transmits a fire confirmation signal or a non-fire confirmation signal to the support device by the response operation of the site confirmation. to the receiver of said fire alarm equipment via
The receiver is characterized in that when it receives the fire confirmation signal, it determines a fire and reports a fire, and when it receives the non-fire confirmation signal, it determines a non-fire and reports a non-fire. Disaster prevention support system.
The disaster prevention support system according to claim 1,
The receiver satisfies a predetermined fire sign judgment accumulation condition in a state where the smoke concentration or temperature detected by the fire detector is lower than a predetermined fire judgment value, or when the fire detector judges that a fire has occurred. A disaster prevention support system characterized in that when a fire signal is received and a predetermined fire determination accumulation operation is started, it is determined that the fire sign is detected.
The disaster prevention support system according to claim 1,
A disaster prevention support system characterized in that the fire detector determines the fire sign when a predetermined fire sign judgment accumulation condition is satisfied in a state where the detected value of smoke concentration or temperature is lower than a predetermined fire judgment value. .

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