Disaster prevention linkage system

Abstract

To make effective use of a linkage of systems, which unlock all at once in a case of receiving occurrence of a fire, by reducing simultaneous unlocking of an enter / exit management system linked to a non-fire alarm of a fire alarm system.SOLUTION: In a disaster prevention linkage system that links a fire alarm system with an enter / exit management system, when a fire receiver 14 outputs a fire alarm, the disaster prevention linkage system determines occurrence of a fire based on a setting sensitivity set to a high sensitivity and sends a transfer signal to an enter / exit control board 26, and the enter / exit control board 26 unlocks an electric lock 30. Otherwise, when the fire receiver 14 outputs the fire alarm, the disaster prevention linkage system sends the transfer signal to the enter / exit control board 26 so as to unlock an electric lock 30 in an area with a low security priority; and in the case where the enter / exit control board 26 still receives the transfer signal even after a time required to confirm a fire site, the disaster prevention linkage system unlocks an electric lock 30 in an area with a high security priority.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a disaster prevention interlocking system that operates in conjunction with a fire alarm system that monitors for fires and an entrance / exit system that recognizes the entrance / exit of users and controls an electric lock. [Background technology]

[0002] Conventionally, in facilities such as office buildings, fires have been monitored by installing fire alarm systems that receive fire signals from fire detectors with a receiver and output a fire alarm as well as a signal to transfer information. In addition, entrance / exit management systems have been installed that receive user ID information read by a reading terminal such as a card reader installed on the outside of the door and receive it with an entrance / exit control device, and if it is determined to match the registered user ID information registered in advance, unlock the electronic lock on the door to prevent third parties other than those involved from entering the facility.

[0003] However, the entrance / exit management system that controls the electric locks on the doors installed in the facility may become an obstacle to evacuation and firefighting activities in the event of a fire. For this reason, when the fire alarm system receiver receives a fire signal and issues an alarm, it sends an alarm transfer signal to the entrance / exit management system, which unlocks all the electric locks at once, linking the systems together to ensure that evacuation and firefighting activities are not hindered. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-037438 A [Patent Document 2] JP 2004-310629 A [Patent Document 3] Japanese Patent Application Publication No. 10-63961 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in such an interlocking system in which the entrance / exit control system controls the simultaneous unlocking of the electric locks based on a signal transmitted from a conventional fire alarm system, even if the fire receiver receives a fire signal from a fire detector due to a cause other than a fire and outputs a non-fire alarm, the entrance / exit control system will still simultaneously unlock the electric locks based on the signal transmitted, thereby compromising the security of the facility provided by the entrance / exit control system.

[0006] For this reason, even if the entrance / exit control system is linked to control the simultaneous unlocking of the electronic locks in response to a signal transmitted from the fire alarm system, in actual operation it is highly likely that operations will deal with non-fire alarms by performing a signal transmission stop operation to halt the control function for the simultaneous unlocking of the entrance / exit control systems in response to a signal transmitted from the fire alarm system, resulting in the problem that the function of the system linkage to simultaneously unlock the electronic locks of the entrance / exit control systems in response to a signal transmitted from the fire alarm system, which is intended to avoid hindering evacuation actions or firefighting activities, will not be utilized.

[0007] The present invention aims to provide a disaster prevention interlocking system that reduces the simultaneous unlocking of entrance / exit management systems that are linked to non-fire alarms in a fire alarm system, and makes it possible to effectively utilize system interlocking that simultaneously unlocks in response to receiving a fire signal. [Means for solving the problem]

[0008] (Second invention: Unlocking all doors simultaneously by transmitting a fire signal after changing the sensitivity of the fire receiver) The second invention of the present application is a fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm when a fire is detected based on a set sensitivity; an entrance / exit control system that receives information from the reading terminal at an entrance / exit control device and unlocks an electric lock when the information matches registered identification information; In a disaster prevention linkage system that links When the fire receiver outputs a fire alarm, the sensitivity is changed to a higher sensitivity than the set sensitivity, and when a fire is determined to exist based on the changed high sensitivity, the fire receiver transmits a transfer signal to the entrance / exit control device; The entrance / exit control device is characterized by unlocking the electric lock when it receives an alarm signal transmitted by a fire receiver.

[0009] (Third invention: simultaneous unlocking control based on priority) The third invention of the present application is a fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm; an entrance / exit control system that receives the identification information from the reading terminal at an entrance / exit control device and unlocks an electric lock when it is determined that the identification information matches the registered identification information; In a disaster prevention linkage system that links the fire receiver transmits a first signal transfer to the entrance / exit control device when a fire alarm is output, and transmits a second signal transfer to the entrance / exit control device when the fire signal is still being received even after a time required for checking the fire site has elapsed since the transmission of the first signal transfer; The entry / exit control device is characterized in that when a first signal transmission is received, it unlocks the electric locks in areas with a low security priority, and when a second signal transmission is received, it unlocks the electric locks in areas with a high security priority.

[0010] (Fourth invention: Another form of simultaneous unlocking control based on priority) The fourth invention of the present application is a fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm; an entrance / exit control system that receives the identification information from the reading terminal at an entrance / exit control device and unlocks an electric lock when the identification information matches the registered information; In a disaster prevention linkage system that links The fire receiver transmits a transfer signal to the entrance / exit control device when a fire alarm is output, The entrance / exit control device is characterized in that when it receives a signal transmission, it unlocks the electric locks of areas with low security priority, and when the signal transmission does not stop even after the time required for checking the fire scene has elapsed since receiving the signal transmission, it unlocks the electric locks of areas with high security priority. Effect of the Invention

[0011] (Effects of the second invention) According to the second invention of the present application, when the fire receiver determines that there is a fire from the fire signal received from the fire detector based on the set sensitivity and outputs a fire alarm, it changes the sensitivity setting to a higher sensitivity than the set sensitivity, and if it determines that there is a fire based on the changed high sensitivity setting, it sends a transfer signal to the entrance / exit control device, and the entrance / exit control device unlocks the electric lock when it receives the transfer signal sent by the fire receiver.Since the transfer signal is not sent to the entrance / exit control device at the stage when a fire is determined to be a fire from the fire signal from the fire detector based on the set sensitivity and an alarm is issued, it is possible to reliably prevent the electric lock from being unlocked in response to a non-fire alarm, and the security of the entrance / exit management system is not compromised even if there is a non-fire alarm in the fire alarm system.

[0012] In addition, when a fire is detected and an alarm is issued, the sensitivity is changed to a higher setting than before and the fire is detected again. If the fire signal is due to an actual fire, the fire is reliably detected again based on the changed high sensitivity, and a signal is sent to quickly unlock all the electric locks using the entrance / exit control device, allowing evacuation and firefighting activities to be handled appropriately.

[0013] On the other hand, in the case of a non-fire alarm, the cause other than the temporary fire is eliminated between the time when the sensitivity is changed to high and the time when a fire is judged again, so that a fire is not judged even if the sensitivity is changed to high and no signal is sent, it is possible to reliably prevent simultaneous unlocking linked to a non-fire alarm.

[0014] (Effects of the third invention) According to the third invention of the present application, the fire receiver transmits a first signal transfer to the entrance / exit control device when it receives a fire signal from a fire detector and outputs a fire alarm, and transmits a second signal transfer to the entrance / exit control device when the fire signal is still being received even after the time required for checking the fire site has elapsed since the transmission of the first signal transfer. The entrance / exit control device unlocks the electric locks in areas with a low security priority when it receives the first signal transfer transmitted by the fire receiver, and unlocks the electric locks in areas with a high security priority when it receives the second signal transfer transmitted by the fire receiver. Therefore, it is possible to prevent a fire from being detected due to a cause other than a fire. In a non-fire alarm system that receives a fire signal from a fire alarm device and issues an alarm, when the first signal is sent, only the electric locks installed in areas with a low security priority are unlocked simultaneously, and the electric locks installed in areas with a high security priority are not unlocked simultaneously. If an on-site check determines that there is no fire alarm before the second signal is sent, the transmission of the first signal is stopped by the recovery operation of the fire receiver, and this resets the simultaneous unlocking of all electric locks installed in areas with a low security priority and locks them all at once, so the security of the entrance / exit control system is not compromised even if there is a non-fire alarm in the fire alarm system.

[0015] In addition, if a fire detector is activated due to a fire, a second signal will be sent after the time required to confirm the fire site has elapsed since the first signal, and all electronic locks installed in areas with high security priority will be unlocked simultaneously, allowing evacuation and firefighting activities to be handled appropriately.

[0016] (Effects of the fourth invention) According to the fourth invention of the present application, the fire receiver transmits a transfer signal to the entrance / exit control device when it receives a fire signal from a fire detector and outputs a fire alarm, and the entrance / exit control device unlocks the electric locks in areas with a low security priority when it receives the transfer signal transmitted by the fire receiver, and unlocks the electric locks in areas with a high security priority when the transfer signal has not stopped even after the time required for checking the fire site has elapsed since the reception of the transfer signal. Therefore, in the case of a non-fire alarm in which a fire signal is received due to a fire detector being activated for a cause other than a fire and an alarm is issued, only the electric locks installed in areas with a low security priority are unlocked simultaneously by the transmission of the transfer signal, and the electric locks installed in areas with a high security priority are not unlocked simultaneously until the specified time required for checking the fire site has elapsed, and if a non-fire alarm is found during that time, the transmission of the transfer signal is stopped by the recovery operation of the fire receiver, and as a result, the simultaneous unlocking of all the electric locks installed in areas with a low security priority is reset and they are locked simultaneously, so that the security of the entrance / exit control system is not compromised even if there is a non-fire alarm in the fire alarm system.

[0017] In addition, if a fire detector is activated due to a fire, the electronic locks installed in areas with high security priority will be unlocked all at once after the time required to confirm the fire site has elapsed from the time the alarm signal is received, allowing evacuation and firefighting activities to be carried out appropriately. [Brief description of the drawings]

[0018] [Figure 1] An explanatory diagram showing the outline of a disaster prevention interlocking system that links an entrance / exit management system to a fire alarm system. [Diagram 2] A block diagram showing the functional configuration of a fire control panel and an entrance / exit control panel in the first invention. [Diagram 3] A time chart showing the system linkage operations in Figure 2 in signal format. [Figure 4] A time chart showing the system linkage operations in Figure 2 in flow format. [Diagram 5] A time chart showing the system linkage operation of Figure 2, which performs storage reception, in signal format. [Figure 6] A time chart showing the system linkage operation of Figure 2, which performs storage reception, in flow format. [Figure 7] A block diagram showing the functional configuration of a fire control panel and an entrance / exit control panel in the second invention. [Figure 8] A time chart showing the system linkage operations in Figure 7 in flow format. [Figure 9] A block diagram showing the functional configuration of a fire control panel and an entrance / exit control panel according to the third invention. [Figure 10] A time chart showing the system linkage operation in Fig. 9 in signal format. [Figure 11] A time chart showing the system interlocking operation in the fourth aspect of the invention in a flow format. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] [Outline of the disaster prevention interlocking system] FIG. 1 is an explanatory diagram showing an overview of a disaster prevention linkage system that links an entrance / exit management system with a fire alarm system.

[0020] (Fire alarm system overview) As shown in FIG. 1, the fire alarm system 10 is equipped with a fire receiver 14, from which sensor lines L1 to Ln are drawn for each alert area, and a fire sensor 16, as shown representatively in sensor line L1, is connected between the fire receiver 14 and a common line C.

[0021] The fire detector 16 is a so-called on-off type smoke detector or heat detector, etc., which detects changes in physical phenomena such as smoke and heat associated with a fire, issues an alarm, and transmits a fire signal to the fire receiver 14. The fire receiver 14 is a so-called P-type fire receiver that monitors fires in units of the detector latitudes L1 to Ln, and outputs a fire alarm when it receives a fire signal from the fire detector 16.

[0022] The fire alarm operation of the fire receiver 14, when it receives a fire signal from the fire detector 16, is to turn on or flash the fire representative light and output a fire alarm sound, and also turn on or flash the area indicator light corresponding to the detector line from which the fire was reported to indicate the area where the fire has occurred, and also control the output of the area sound alarm, etc.

[0023] In addition, when the fire receiver 14 receives a fire signal from the fire detector 16 and outputs a fire alarm, it performs a predetermined processing operation to confirm whether it is a non-fire alarm, in which a fire signal from the fire detector 16 is received due to a cause other than a fire and a fire alarm is output, or a fire alarm, in which a fire signal from the fire detector 16 is received due to an actual fire and a fire alarm is output, and if it confirms that it is a fire alarm due to an actual fire, it sends a transfer signal to the entrance / exit management system 12 to perform a linkage operation, whereas if it confirms that it is a non-fire alarm, it controls the system to not link without sending a transfer signal to the entrance / exit management system 12.

[0024] (Entrance / Exit Management System Overview) As shown in FIG. 1, the entrance / exit management system 12 is composed of a communication control device 20, a central device 22 with a web server function located in a control room or the like, a client 24 that can access the central device 22, an entrance / exit control panel 26 located near each room or the like, a card reader 28 located on the exit side of the door of each room, and an electric lock 30 located on each door.

[0025] The communication control device 20 is connected to the center device 22 via a serial transmission line 21 such as RS422, to the entrance / exit control panel 26 via a serial transmission line 25 such as RS485, and further to the fire receiver 14 via a serial transmission line 18 used for signal transfer such as RS232, enabling data transfer and control transfer between the center device 22 and the entrance / exit control panel 26, and further enabling signal transfer from the fire receiver 14 to the entrance / exit control panel 26 via the center device 22. The client 24 is connected to the center device 22 via a LAN line 23 such as Ethernet (registered trademark), and can access the center device 22 to refer to and view the entrance / exit management information.

[0026] When operating the entry / exit management system 12, user ID information (user identification information) of users who are permitted to enter and exit each room is pre-set in the central device 22, and this user ID information is uploaded and registered in the entry / exit control panel 26.

[0027] When a user enters or leaves a room, the user swipes a contact or contactless card recording his / her user ID information over or brings it close to card reader 28, and the user ID information read by card reader 28 is sent to entrance / exit control panel 26, which checks it against the registered user ID information. If entrance / exit control panel 26 determines that the user ID information matches, it unlocks electric lock 30 to allow the user to enter the room, but if the user ID information does not match, it keeps electric lock 30 in the locked state and denies the user entry.

[0028] In addition, when the entrance / exit control panel 26 receives an alarm signal transmitted by the fire receiver 14 via the central device 22, it performs simultaneous unlocking control to unlock all of the electric locks 30 or all of specific electric locks 30 that have been preset.

[0029] [Embodiment of the first invention] FIG. 2 is a block diagram showing the functional configuration of the fire control panel and the entrance / exit control panel in the first invention of the present application.

[0030] (Fire Receiver Configuration) As shown in FIG. 2, the fire receiver 14 is equipped with a control unit 32, which is a function realized, for example, by executing a program, and uses, as hardware, a computer circuit equipped with a CPU, memory, various input / output ports, etc.

[0031] The control unit 32 is provided with a receiving unit 34, a recovery unit 36, an operation unit 42, a display unit 44, an alarm unit 46, and a reporting unit 48.

[0032] The receiving units 34 are provided corresponding to the sensor lines L1 to Ln, and receive and output fire signals from the fire sensors 16. The recovery unit 36 ​​temporarily cuts off the power supply to the sensor lines L1 to Ln to recover the fire sensors 16 that have triggered an alarm.

[0033] The operation unit 42 is provided with a main sound stop switch, a district sound stop switch, a report transfer stop switch, etc. The display unit 44 is provided with various indicator lights and displays necessary for fire monitoring, such as a fire representative light, a district indicator light, etc.

[0034] The alarm unit 46 includes a speaker and outputs a fire alarm using the main sound, as well as operation sounds associated with switch operations and various types of voice guidance.

[0035] The reporting unit 48 transmits a reporting signal to the entrance / exit management system 12 via a serial transmission line 18 such as RS232 to control the simultaneous unlocking of the electric locks.

[0036] When the control unit 32 detects a fire alert from the received fire signal output by any of the receiving units 34 corresponding to the sensor lines L1 to Ln, it instructs the display unit 44 and the alarm unit 46 to display a representative fire and a fire area, and also controls the output of a fire alarm sound.

[0037] In addition, when the control unit 32 receives a fire signal due to the activation of the fire detector 16 and outputs a fire alarm, it activates a recovery timer and, when a predetermined time T1 has elapsed, controls the recovery unit 36 ​​provided corresponding to the sensor line connecting the activated fire detector 16 to temporarily cut off the power supply and resets and restores the activated fire detector 16, and if, after the recovery, it receives a fire signal due to the fire detector 16 again, it instructs the notification unit 48 to transmit a notification transfer signal to the entrance / exit control system 12.

[0038] For ease of explanation, a single entrance / exit control panel 26 is connected to the serial transmission line 25 from the communication control device 20, but in reality, multiple entrance / exit control panels 26 are connected as needed, as shown in Fig. 1. Also, a single card reader 28 and electric lock 30 are connected to the entrance / exit control panel 26, but in reality, multiple sets of these are connected as needed, as shown in Fig. 1.

[0039] (Configuration of the entrance / exit control panel) As shown in FIG. 2, the entrance / exit control panel 26 is equipped with a control unit 50, which is a function realized, for example, by executing a program, and uses, as hardware, a computer circuit equipped with a CPU, memory, various input / output ports, etc.

[0040] The control unit 50 is provided with a transmission unit 52 that connects the communication control device 20, a transmission unit 54 that connects the card reader 28, and a drive unit 56 that connects the electric lock 30.

[0041] The control unit 50 uploads and registers user ID information from the center device 22, and when it receives user ID information by reading the user card from the card reader 28 via the transmission unit 54, it compares this with the registered user ID information, and if it determines that the match is true, it unlocks the electric lock 30, and if it determines that the match is false, it controls the electric lock 30 to remain in the locked state.

[0042] In addition, when the control unit 50 receives an alarm signal transmitted by the fire receiver 14 from the communication control device 20 via the center device 22 or directly from the communication control device 20 through the transmission unit 52, it instructs the drive unit 56 to perform unlocking control by passing electricity through the solenoid of the electric lock 30 to unlock it.

[0043] When a signal transmission from the fire receiver 14 is received, the control unit 50 controls the unlocking of the electric locks 30 in all of the entrance / exit control panels 26 connected to the serial transmission line 25. Therefore, when the entrance / exit management system 12 is viewed as a whole, a signal transmission from the fire receiver 14 controls the unlocking of all of the electric locks 30 at once.

[0044] (Control operation of simultaneous unlocking by signal transmission) Fig. 3 is a time chart showing the system interlocking operation of Fig. 2 in the form of signals, and is divided into Fig. 3(A) to (F) to show the operation of the fire detector 16, the operation of the recovery unit 36, the operation of the recovery timer, the operation of the fire alarm, the operation of the report transfer unit 48, and the simultaneous unlocking operation. Each operation in Fig. 3 is shown by a binary value of 0 for a non-operating state and 1 for an operating state.

[0045] When the fire detector 16 activates and transmits a fire signal at time t1 in Fig. 3(A), the fire receiver 14 receives this and outputs a fire alarm as shown in Fig. 3(D). In addition, upon receipt of the fire signal, the recovery timer in Fig. 3(C) is started, and at time t2 when a predetermined set time T1 has elapsed, the recovery unit 36 ​​shown in Fig. 3(B) is operated to temporarily cut off the power supply to the activated fire detector 16, and at time t3, a recovery operation is performed to supply power.

[0046] If the fire detector 16 has detected an actual fire and sounded an alarm as a result of the recovery operation by this recovery unit 36, the fire detector 16, which was reset and stopped by the power cut at time t2, will sound an alarm again and transmit a fire signal to the fire receiver 14 when operation resumes following the power being turned on at time t3.

[0047] Based on re-reception of the fire signal following the recovery operation of the fire detector 16, the fire receiver 14 transmits a report signal from the report transmission unit 48 to the entrance / exit management system 12, as shown in Figure 3 (E), and performs simultaneous unlocking of the electric locks 30, as shown in Figure 3 (F).

[0048] On the other hand, in the case of a non-fire alarm due to a temporary cause other than fire, such as smoke from smoking or water vapor from cooking, even if the fire detector 16 that triggered the alarm is restored by the restoration unit 36 ​​after the specified time T1 has elapsed, the cause other than the fire will have disappeared by that time, and the fire detector 16 will not re-alert, so the fire receiver 14 will not transmit a notification signal and the electric locks 30 of the entrance / exit management system will not be simultaneously unlocked.

[0049] Figure 4 is a time chart showing the system linkage operation of Figure 2 in flow format, and shows the operation of the entrance / exit control panel in conjunction with the operation of the fire receiver.

[0050] 4, when the fire receiver 14 detects the reception of a fire signal from the fire detector 16 in step S1 (hereinafter, "step" is omitted), the process proceeds to S2 and outputs a fire alarm. Then, in S3, the recovery timer is started, and when the elapse of a predetermined time T1 by the recovery timer is detected in S4, the recovery operation of the fire detector 16 is performed in S5.

[0051] In response to the recovery operation of the fire detector 16 in S5, if reception of a re-alarm from the fire detector 16 is detected in S6, the process proceeds to S7, where a signal is transmitted to the entrance / exit control panel 26. When the entrance / exit control panel 26 receives a signal from the fire receiver 14, it energizes the solenoids of the electric locks 30 in S8, thereby performing simultaneous unlocking control.

[0052] On the other hand, if S6 does not detect a re-alarm from the fire detector in response to the recovery operation of the fire detector 16 in S5, the transmission of the signal transfer in S7 is skipped and the process proceeds to S9, and the simultaneous unlocking of all 30 electronic locks is not performed.

[0053] In addition, when the fire receiver 14 detects in S9 the receipt of a fire restoration operation based on confirmation that the fire has been extinguished, it proceeds to S10 and stops transmitting the report signal. In response, the entrance / exit control panel 26 proceeds to S11 and stops the flow of electricity to the solenoids of the electric locks that were simultaneously unlocked in S8, thereby performing lock restoration control to simultaneously lock all the locks.

[0054] (System linkage operation for storing and receiving) The control unit 32 of the fire receiver 14 shown in Fig. 2 may have a function for controlling accumulation reception. In order to suppress non-fire alarms, the accumulation reception by the control unit 32 does not output a fire alarm even if a fire signal is received due to an alarm from the fire detector 16, but performs accumulation reception in which the fire signal is continuously received for a predetermined accumulation time Ts, and then performs control to determine a fire and output a fire alarm.

[0055] Furthermore, even when the control unit 32 has confirmed a fire through accumulated reception and output a fire alarm, it starts a recovery timer, and when a predetermined time T1 has elapsed, it controls the recovery unit 36 ​​provided corresponding to the sensor line connecting the activated fire detector 16 to temporarily cut off the power supply and resets and recovers the activated fire detector 16, and when it receives a fire signal due to the re-activation of the fire detector 16 after recovery, it instructs the report transfer unit 48 to transmit a report transfer signal to the entrance / exit management system 12. The other configurations and functions are the same as those in the case of not performing accumulated reception in FIG. 2.

[0056] (Control operation of simultaneous unlocking by storing and receiving and transmitting signals) Fig. 5 is a time chart showing the system interlocking operation of Fig. 2 in the form of signals, which performs accumulation and reception, and is divided into Fig. 5(A) to (G) and shows the operation of the fire detector 16, the operation of the recovery unit 36, the operation of the accumulation timer, the operation of the recovery timer, the operation of the fire alarm, the operation of the report transfer unit 48, and the simultaneous unlocking operation. Each operation in Fig. 5 is represented by a binary value of 0 for a non-operating state and 1 for an operating state.

[0057] When the fire detector 16 goes off and transmits a fire signal at time t1 in Fig. 5(A), the fire receiver 14 receives the signal and starts the accumulation timer in Fig. 5(C). During accumulation by the accumulation timer, an accumulation lamp provided on the display unit 44 is turned on to notify the user.

[0058] When time t2 is reached after the accumulation time Ts by the accumulation timer started at time t1 has elapsed, the recovery unit 36 ​​is operated to temporarily cut off the power supply to the sounding fire detector 16, and a recovery operation is performed to supply power again at time t3, as shown in Fig. 5(B). If the fire detector 16 has detected an actual fire and sounded an alarm as a result of this recovery operation by the recovery unit 36, the fire detector 16, which was reset by the power supply at time t2, will sound an alarm again when the power is turned back on at time t3, and transmit a fire signal to the fire receiver 14. The fire receiver 14 determines that there is a fire through this accumulation and reception, and outputs a fire alarm as shown in Fig. 5(E).

[0059] The fire receiver 14 starts the recovery timer in Fig. 5(D) at time t3 when a fire is confirmed by accumulated reception, and at time t4 when a predetermined set time T1 has elapsed, it operates the recovery unit 36 ​​to temporarily cut off the power supply to the activating fire detector 16 as shown in Fig. 5(B), and performs a recovery operation of supplying power at time t5. If the fire detector 16 detects an actual fire and continues to activate the fire alarm as a result of this recovery operation of the recovery unit 36, it will activate the alarm again when the power is turned on at time t5 and send a fire signal to the fire receiver 14.

[0060] Based on re-reception of the fire signal following the recovery operation of the fire detector 16, the fire receiver 14 transmits a report signal from the report transmission unit 48 to the entrance / exit management system 12, as shown in Figure 5 (F), and performs simultaneous unlocking of the electric locks 30, as shown in Figure 5 (G).

[0061] On the other hand, in the case of a non-fire alarm due to a temporary cause other than a fire, such as smoke from smoking or water vapor from cooking, even if the fire receiver 14 determines that there is a fire through accumulated reception, if the recovery unit 36 ​​restores the fire detector 16 by temporarily cutting off the power supply when the specified time T1 set by the recovery timer has elapsed, the fire detector 16 will not re-alert because the cause other than the fire has disappeared, a notification signal will not be sent, and the electric locks in the entrance / exit management system will not be simultaneously unlocked.

[0062] FIG. 6 is a time chart showing in flow form the system linkage operation of FIG. 2, which performs stored reception, and shows the operation of the entrance / exit control panel in conjunction with the operation of the fire receiver.

[0063] As shown in FIG. 6, when the fire receiver 14 detects reception of a fire signal from the fire detector 16 in S21, it proceeds to S22 and starts the accumulation timer, and when it detects the lapse of accumulation time Ts by the accumulation timer in S23, it performs recovery operation of the fire detector 16 in S24, and when it detects reception of a re-alarm from the fire detector 16 in S25 as a result of this recovery operation, it confirms the existence of a fire and outputs a fire alarm in S26.

[0064] Next, a recovery timer is started in S27, and when the recovery timer detects the passage of a predetermined time T1 in S28, a recovery operation is performed on the fire detector 16 in S29. In response to the recovery operation of the fire detector 16 in S29, if reception of a re-alarm from the fire detector is detected in S30, the process proceeds to S31, where a report transfer signal is sent to the entrance / exit control panel 26. When the entrance / exit control panel 26 receives the report transfer signal from the fire receiver 14, it energizes the solenoid of the electric lock 30 in S32, and performs simultaneous unlocking control.

[0065] On the other hand, if reception of a re-alarm from the fire detector is not detected in S30 in response to the recovery operation of the fire detector 16 in S29, the transmission of the signal transfer signal in S31 is skipped and the process proceeds to S33, and the electric locks 30 are not unlocked all at once.

[0066] In addition, when the fire receiver 14 detects in S33 the receipt of a fire restoration operation based on confirmation that the fire has been extinguished, it proceeds to S34 and stops transmitting the report signal. In response, the entrance / exit control panel 26 proceeds to S35 and stops the flow of electricity to the solenoids of the electric locks 30 that were simultaneously unlocked in S32, thereby performing lock restoration control to simultaneously lock all the locks.

[0067] The control of performing recovery operations in response to a fire alert after a fire has been confirmed through such accumulated reception and then transmitting an alert signal based on a re-issued alert is essentially the same as performing recovery operations in response to a fire alert twice in succession in order to transmit an alert signal. In effect, by repeating two recovery operations and transmitting an alert signal when a fire is detected, it is possible to more reliably prevent the transmission of alert signals based on non-fire alerts.

[0068] In addition, in the embodiment of the first invention, a transfer signal is transmitted when a fire is detected by a re-alarm following a single recovery operation. However, in order to more reliably avoid the transmission of a transfer signal due to a non-fire alarm, the recovery operation is repeated multiple times (two or more times), and a transfer signal is transmitted if a fire is detected following the final recovery operation, thereby more reliably preventing the transmission of a transfer signal due to a non-fire alarm.

[0069] [Embodiment of the second invention] FIG. 7 is a block diagram showing the functional configuration of the fire control panel and the entrance / exit control panel in the second aspect of the present invention.

[0070] (Fire Receiver Configuration) As shown in FIG. 7, an analog sensor 62 is connected between transmission lines SL and SC drawn from a fire receiver 14 of a fire alarm system 10, and the fire receiver 14 has a function as a so-called R-type receiver.

[0071] The analog sensor 62 has a predetermined address preset per line, for example out of a maximum of 255 addresses, and upon receiving a batch AD conversion command transmitted from the fire receiver 14 at a predetermined interval, for example one minute, the sensor detects and retains analog data such as smoke concentration or temperature, and then transmits the analog data in response to a polling command specifying its own address transmitted from the fire receiver 14.

[0072] The analog sensor 62 also has a function of transmitting a fire interrupt signal to the fire receiver 14 such that the signal bits are all 1 when the detected analog data exceeds a predetermined fire level.

[0073] The fire receiver 14 includes a control unit 64, which is a function realized by, for example, executing a program, and uses, as hardware, a computer circuit equipped with a CPU, memory, various input / output ports, etc. The control unit 64 is provided with a transmission unit 60, an operation unit 42, a display unit 44, an alarm unit 46, and a reporting unit 48.

[0074] The transmission unit 60 transmits and receives various commands and data in a predetermined signal format to and from the analog sensor 62. In this case, the transmission unit 60 transmits downstream signals to the analog sensor 62 in a voltage mode using a voltage pulse train, and receives upstream signals transmitted from the analog sensor 62 in a current mode using a current pulse train.

[0075] The operation unit 42, display unit 44, alarm unit 46 and reporting unit 48 are the same as those in the embodiment shown in Figure 2, and among these, the reporting unit 48 transmits a reporting signal to the entrance / exit management system 12 via a serial transmission line 18 such as RS232 to control the simultaneous unlocking of the electric locks.

[0076] The control unit 64 instructs the transmission unit 60 to transmit a batch AD conversion command at a cycle of, for example, one minute, and also transmits a polling command sequentially specifying 255 addresses to the analog sensor 62 during the free time of the batch AD conversion command, and controls the reception and processing of analog data from the analog sensor 62 at the response timing.

[0077] In addition, when the control unit 64 receives a fire interrupt signal from the analog sensor 62, it sends a group search command sequentially specifying specified group addresses to detect the address of the analog sensor 62 that has caused the fire interrupt, and then transmits AD conversion commands and polling commands intensively to the analog sensor 62 at the detected address to collect analog data and perform control to determine whether a fire has occurred.

[0078] In addition, the control unit 64 collects analog data from the analog sensor 62 that has performed a fire interrupt, and if it determines that a fire has occurred based on a predetermined sensitivity setting that has been set in advance, it outputs a fire alarm and changes the sensitivity setting from that point to high sensitivity.After a predetermined time has elapsed, if it determines that a fire has occurred based on the newly set high sensitivity, it instructs the reporting unit 48 to transmit a reporting signal.

[0079] To explain in detail how this setting is changed to high sensitivity, for example, when the control unit 64 judges a fire to have occurred because the smoke density data is equal to or higher than a predetermined fire judgment level which corresponds to a predetermined set sensitivity, the control unit 64 outputs a fire alarm and changes the setting of the predetermined fire judgment level to a lower predetermined fire judgment level which corresponds to high sensitivity, and after a predetermined time has elapsed, if the control unit 64 judges a fire to have occurred based on the changed fire judgment level of high sensitivity, it instructs the reporting unit 48 to transmit a reporting signal.

[0080] (Configuration of the entrance / exit control panel) As shown in Figure 7, the entry / exit control panel 26 is equipped with a control unit 50, which is provided with a transmission unit 52 that connects the communication control device 20, a transmission unit 54 that connects the card reader 28, and a drive unit 56 that connects the electric lock 30, and its configuration and functions are the same as those of the embodiment in Figure 2.

[0081] (Control operation of simultaneous unlocking by signal transmission) FIG. 8 is a time chart showing the system linkage operation of FIG. 7 in flow format, and shows the operation of the entrance / exit control panel in conjunction with the operation of the fire control panel.

[0082] As shown in Figure 8, in S41, the fire receiver 14 sends a batch AD conversion command at a one-minute cycle to all analog detectors 62 connected to the same transmission line to convert the smoke concentration detection signals or temperature detection signals into digital to analog data and store them as analog data, then sends a polling command that sequentially specifies the detector addresses, and receives the analog data sent from the analog detectors 62 at the response timing to collect and store the detector data.

[0083] Next, the process proceeds to S42, and if reception of a fire interrupt signal transmitted by the analog sensor 62 is detected, the process proceeds to S43, and a group search command is transmitted to search for the address of the analog sensor 62 that performed the fire interrupt. Next, in S44, the address of the searched analog sensor 62 is specified and data collection is performed by repeatedly detecting analog data, and if a fire is detected based on a predetermined set sensitivity in S45, the process proceeds to S46 and a fire alarm is output. Accumulative reception may be used so that data is collected over a predetermined period of time in S44, a fire is detected based on the data for the predetermined period of time in S45, and a fire alarm is output in S46.

[0084] Next, in S47, the current sensitivity setting is changed to a predetermined high sensitivity, and in S48, data is collected from the analog detector 62 that has triggered an alarm. After changing to high sensitivity in S47, if a predetermined time has elapsed in S49, the process proceeds to S50, where a fire is detected based on the changed high sensitivity setting. If a fire is detected based on the high sensitivity in S50, the process proceeds to S51, where a report signal is sent to the entrance / exit control panel 26. When the entrance / exit control panel 26 receives the report signal from the fire receiver 14, it energizes the solenoids of the electric locks 30 in S52, thereby controlling the simultaneous unlocking.

[0085] On the other hand, if no fire is detected based on high sensitivity in S50, the transmission of the report signal in S51 is skipped and the process proceeds to S53, and the electric locks 30 are not simultaneously unlocked.

[0086] In addition, when the fire receiver 14 detects in S53 the receipt of a fire restoration operation based on confirmation that the fire has been extinguished, it proceeds to S54 and stops transmitting the report signal. In response, the entrance / exit control panel 26 proceeds to S55 and stops the flow of electricity to the solenoids of the electric locks 30 that were simultaneously unlocked in S52, thereby performing lock restoration control to simultaneously lock all the locks.

[0087] [Embodiment of the Third Invention] FIG. 9 is a block diagram showing the functional configuration of a fire receiver and an entrance / exit control panel in the third invention of the present application. This embodiment is characterized in that the electric locks are unlocked simultaneously in stages, divided according to priority.

[0088] (Fire Receiver Configuration) As shown in Figure 9, the fire receiver 14 has a control unit 32, which is provided with a receiving unit 34, a recovery unit 36, an operation unit 42, a display unit 44, an alarm unit 46, and a reporting unit 48, and the configuration and functions other than the control of transmission of the reporting signal by the control unit 32 and the reporting unit 48 are the same as those of the embodiment in Figure 2.

[0089] When the control unit 32 of the fire receiver 14 receives a fire signal generated by the fire detector 16 and outputs a fire alarm, it instructs the reporting unit 48 to send a first reporting signal intended for an area with a low security priority to the entrance / exit management system 12, and if the fire signal continues to be received even after a specified time required for confirming the fire site has elapsed since the transmission of the first reporting signal, it sends a second reporting signal intended for an area with a high security priority to the entrance / exit management system 12.

[0090] In addition, if the control unit 32 detects acceptance of a recovery operation by the recovery switch provided on the operation unit 42 within a predetermined time after receiving a fire signal and transmitting the first report signal from the report unit 48, it performs control to stop the transmission of the first report signal.

[0091] (Configuration of the entrance / exit control panel) As shown in Fig. 9, the entrance / exit control panel 26 includes a control unit 50, which is provided with a transmission unit 34 that connects the communication control device 20 to the control unit 50, and a drive unit 56 that connects the electric lock 30 to the control unit 50. Note that, as in Fig. 2, a card reader 28 that is paired with the electric lock 30 is connected to the control unit 50 via a transmission unit 52, but this is omitted in Fig. 9.

[0092] The electric locks 30 connected to the entrance / exit control panel 26 via a drive unit 56 are grouped into low priority areas A1, which can tolerate relatively low security, and high priority areas A2, which require high security, according to the importance of security, and the control unit 50 pre-stores priority information indicating whether each electric lock 30 belongs to the low priority area A1 or the high priority area A2.

[0093] When the control unit 50 receives the first report signal sent by the fire receiver 14 for an area with a low security priority, it controls the electric locks 30 of all doors installed in the pre-set low priority area A1 to be unlocked simultaneously.

[0094] In addition, when the control unit 50 receives a second report signal sent by the fire receiver 14 for an area with a high security priority, it controls the electric locks 30 of all doors installed in the pre-set high priority area A2 to be unlocked simultaneously.

[0095] In addition, if the control unit 50 receives a first signal from the fire receiver 14 and simultaneously unlocks the electric locks 30 of all doors installed in the low-priority area A1, and then detects the stop of the first signal without receiving a second signal, it controls the electric locks 30 of all doors installed in the low-priority area A1 that were simultaneously unlocked to be simultaneously re-locked.

[0096] (Control operation of simultaneous unlocking according to the priority of the signal transmission) FIG. 10 is a time chart showing the system linkage operation of FIG. 9 in flow form, and shows the operation of the entrance / exit control panel in conjunction with the operation of the fire control panel.

[0097] As shown in FIG. 10, when the fire receiver 14 detects reception of a fire signal from the fire detector 16 in S61, the process proceeds to S62 to output a fire alarm, and then transmits a first communication signal to the entrance / exit control panel 26 in S63.

[0098] When the entrance / exit control panel 26 receives the first report signal from the fire receiver 14, it performs control in S64 to simultaneously unlock all the electric locks 30 installed on the doors of the low priority area A1.

[0099] On the other hand, after sending the first report signal in S63, the fire receiver 14 detects whether or not a predetermined time required for on-site confirmation has elapsed in S65, and until the predetermined time has elapsed, monitors whether or not the fire has been restored by accepting a restoration operation, which is performed when a person in charge goes to the site and confirms that there is no fire in S66.

[0100] When it is detected in S65 that a predetermined time required for on-site confirmation has elapsed, the process proceeds to S67, where a second report signal is sent to the entrance / exit control panel 26. When the entrance / exit control panel 26 receives the second report signal from the fire receiver 14, it performs control in S68 to simultaneously unlock all of the electric locks 30 installed on the doors of the high priority area A2.

[0101] On the other hand, if it is detected in S66 that the fire has been restored by the restoration operation that is performed when the person in charge goes to the scene and confirms that there is no fire, S67 and S69 for sending the second alarm signal are skipped, and the electric locks 30 installed in the high priority area A2 are not unlocked all at once.

[0102] In addition, when the fire receiver 14 detects in S69 the receipt of a fire restoration operation based on confirmation that the fire has been extinguished, if the first report signal has been transmitted in S63, this transmission is stopped in S70, and the entrance / exit control panel 26, having detected the stop of reception of the first report signal, performs lock restoration control in S71 to simultaneously lock all of the electric locks 30 installed in the low priority area A1.

[0103] In addition, if the fire receiver 14 has transmitted the first report signal in S63 and the second report signal in S67, the transmission of the first report signal and the second report signal is stopped in S70, and the entry / exit control panel 26, upon detecting the stop of reception of the first report signal and the second report signal, performs lock restoration control in S71 to simultaneously lock all of the electric locks 30 installed in the low priority area A1 and the high priority area A2.

[0104] In this manner, when the fire receiver 14 outputs a non-fire alarm, only the electric locks 30 installed in the low priority area A1 are unlocked simultaneously by transmitting the first signal transfer, and the electric locks 30 installed in the high priority area A2 are not unlocked simultaneously. Also, if an on-site check determines that it is not a fire alarm within a specified time period before the second signal transfer is transmitted, the transmission of the first signal transfer is stopped by the recovery operation of the fire receiver 14, and the simultaneous unlocking of the electric locks 30 installed in the low priority area A1 is reset and they are all locked simultaneously, thereby preventing the security of the entrance / exit control system from being compromised by non-fire alarm signal transfer from the fire alarm system.

[0105] In addition, if the fire alarm from the fire detector 16 continues, a second alarm signal is transmitted a predetermined time after the transmission of the first alarm signal, and the electric locks 30 of the doors installed in the high priority area A2 are unlocked simultaneously, allowing evacuation and firefighting activities to be handled appropriately.

[0106] In addition, when the control unit 32 of the fire receiver 14 performs accumulated reception, it performs the operations of S63 to S71 in FIG. 10 after issuing a fire alarm based on the same accumulated reception as shown in S21 to S26 in FIG.

[0107] [Embodiment of the Fourth Invention] This embodiment is different from the third invention in that the electric locks are grouped according to priority, and in response to a reporting signal from a fire receiver, the electric locks are unlocked all at once in stages according to their priority.

[0108] (Fire Receiver Configuration) The fire receiver of this embodiment is similar to the fire receiver 14 shown in Figure 9, and the control unit 32 of the fire receiver 14 is provided with a receiving unit 34, a recovery unit 36, an operation unit 42, a display unit 44, an alarm unit 46, and a reporting unit 48. The control unit 32 differs in that when it receives a fire signal due to an alarm from the fire detector 16 and outputs a fire alarm, it instructs the reporting unit 48 to send a reporting signal to the entrance / exit management system 12, and then controls the sending of the reporting signal to stop when it detects that a recovery operation has been received; otherwise, the configuration and functions are similar to those of the embodiment of Figure 9.

[0109] (Configuration of the entrance / exit control panel) The entrance / exit control panel of this embodiment is similar to the entrance / exit control panel 26 shown in Figure 9, and the entrance / exit control panel 26 is equipped with a control unit 50, which is provided with a transmission unit 52 that connects the communication control device 20 to the control unit 50, and a drive unit 56 that connects the electric lock 30 to the control unit 50.In addition, as shown in Figure 2, a card reader 28 that is paired with the electric lock 30 is connected to the control unit 50 via the transmission unit 54, but this is not shown in the illustration.

[0110] The electric locks 30 connected to the entrance / exit control panel 26 via a drive unit 56 are grouped into low priority areas A1, which can tolerate relatively low security, and high priority areas A2, which require high security, according to the importance of security, and the control unit 50 pre-stores priority information indicating whether each electric lock 30 belongs to the low priority area A1 or the high priority area A2.

[0111] When the control unit 50 receives the report signal transmitted by the fire receiver 14, it performs control to simultaneously unlock the electric locks 30 of all the doors installed in the preset low priority area A1.

[0112] In addition, if the control unit 50 continues to receive the report signal sent by the fire receiver 14 even after a specified time required for confirming the fire site has elapsed since receipt of the report signal, it determines that there is a real fire and performs control to simultaneously unlock the electric locks 30 of all doors installed in the high priority area A2.

[0113] In addition, if the control unit 50 receives an alarm signal from the fire receiver 14 and simultaneously unlocks all electric locks 30 installed in the low-priority area A1, and then detects that the alarm signal has stopped before a specified time period required for checking the fire site has elapsed, the control unit 50 controls all electric locks 30 installed in the low-priority area A1 that were simultaneously unlocked to be simultaneously re-locked.

[0114] (Control operation of simultaneous unlocking according to the priority of electric locks) FIG. 11 is a time chart showing in a flow format the system interlocking operation in the embodiment of the fourth invention, and shows the operation of the entrance / exit control panel accompanying the operation of the fire control panel for the functional configuration of FIG.

[0115] As shown in FIG. 11, when the fire receiver 14 detects reception of a fire signal from the fire detector 16 in S81, the process proceeds to S82 to output a fire alarm, and then transmits a notification signal to the entrance / exit control panel 26 in S83.

[0116] When the entrance / exit control panel 26 receives the report signal from the fire receiver 14, it controls the simultaneous unlocking of all the electric locks 30 installed on the doors of the low-priority area A1 in S84. Next, the entrance / exit control panel 26 detects in S85 whether a predetermined time required for the fire receiver 14 to confirm the site has elapsed since the simultaneous unlocking of the low-priority area A1, and until the predetermined time has elapsed, it monitors in S86 whether reception of the report signal has stopped due to the acceptance of a restoration operation to be performed when a person in charge goes to the site and confirms that there is no fire.

[0117] When it is detected in S85 that the predetermined time required for current confirmation has elapsed, the process proceeds to S87, where control is exercised to simultaneously unlock all the electric locks 30 installed in the high priority area A2.

[0118] On the other hand, if the fire receiver 14 detects in S88 that the fire has been restored by a restoration operation performed by a person in charge when visiting the scene and confirming that there is no fire, it stops transmitting the report signal in S89. Therefore, when the entrance / exit control panel 26 detects in S86 that the reception of the report signal has stopped, it proceeds to S90, and if the electric locks 30 in the low-priority area A1 have all been unlocked in S84, it performs lock restoration control to simultaneously lock all the electric locks 30 in the low-priority area A1 in S90.

[0119] In addition, if the electric locks 30 in the low priority area A1 are simultaneously unlocked in S84 and the electric locks 30 in the high priority area A2 are simultaneously unlocked in S87, lock restoration control is performed in S90 to simultaneously lock the electric locks 30 in the low priority area A1 and the high priority area A2.

[0120] In this way, when the fire receiver 14 outputs a non-fire alarm, only the electric locks 30 installed in the low priority area A1 are unlocked simultaneously by transmitting the alarm transmission signal, and the electric locks 30 installed in the high priority area A2 are not unlocked simultaneously. Also, if it is not a fire alarm, the reception of the alarm transmission signal is stopped by the recovery operation of the fire receiver 14 before the specified time required for on-site confirmation has elapsed, thereby preventing the security of the entrance / exit management system from being compromised even if there is a non-fire alarm in the fire alarm system.

[0121] In addition, if the fire detector 16 continues to issue a fire alarm, the reception of the alarm signal will continue, and after a specified time required for on-site confirmation has elapsed, the electric locks 30 on the doors installed in the high priority area A2 will be unlocked all at once, allowing evacuation and firefighting activities to be handled appropriately.

[0122] In addition, when the control unit 32 of the fire receiver 14 performs accumulated reception, it will issue a fire alarm based on the same accumulated reception as shown in S21 to S26 in Figure 6, and then perform the operations of S83, S88, and S89 in Figure 11.

[0123] [Modifications of the present invention] (Fire Receiver) The fire receiver 14 shown in the above embodiments of the first, third and fourth inventions is an example of a P-type fire receiver that detects fires and issues an alarm on a line-by-line basis, but it can also be applied to the R-type fire receiver shown in the embodiment of the second invention, which sets an address to the fire detector and detects fires and issues an alarm on a detector-by-detector basis.

[0124] (Electronic lock system) The above embodiment takes as an example the case where the electric locks of an entrance / exit management system are unlocked all at once by a signal transmission from a fire alarm system, but in the case of an electric lock system in which electric locks installed on doors are remotely controlled by operating an electric lock control panel, the electric locks may also be unlocked all at once by transmitting a signal transmission from the fire alarm system according to the above embodiment.

[0125] (Security Gate System) The above embodiment has been described as an example of the case where the electric locks of an entrance / exit control system are unlocked simultaneously by a signal transmitted from a fire alarm system. However, in the case of an appropriate security gate system in which gates are installed at the entrances and exits of a facility and opening and closing is controlled by card reading authentication, the gates may also be opened simultaneously by transmitting a signal transmitted from a fire receiver according to the above embodiment.

[0126] (others) Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited to the numerical values ​​shown in the above embodiment. [Explanation of symbols]

[0127] 10: Fire alarm system 12: Entrance / Exit Management System 14: Fire alarm receiver 16:Fire detector 18, 21, 25: Serial transmission lines 23: LAN line 20: Communication control device 22: Center device 24: Client 26: Entrance / Exit Control Panel 28: Card reader 30: Electric lock 32,50,64: Control section 34: Receiving unit 36: Recovery Department 48:Transfer Department 52, 54, 60: Transmission section 62: Analog sensor

Claims

1. A fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm when a fire is detected based on a set sensitivity; an entrance / exit control system that receives information from the reading terminal at an entrance / exit control device and unlocks an electric lock when the information matches registered information; In a disaster prevention linkage system that links When the fire receiver outputs the fire alarm, the sensitivity is changed to a higher sensitivity than the set sensitivity, and when a fire is determined to exist based on the changed high sensitivity, the fire receiver transmits a transfer signal to the entrance / exit control device; The disaster prevention linkage system is characterized in that the entrance / exit control device unlocks the electric lock when it receives an alarm signal transmitted by the fire receiver.

2. A fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm; an entrance / exit control system that receives information from the reading terminal at an entrance / exit control device and unlocks an electric lock when the information matches registered information; In a disaster prevention linkage system that links the fire receiver transmits a first signal transfer to the entrance / exit control device when the fire alarm is output, and transmits a second signal transfer to the entrance / exit control device when the fire signal is still being received even after a time required for checking the fire site has elapsed since the transmission of the first signal transfer; The disaster prevention linkage system is characterized in that the entry / exit control device unlocks the electric locks in areas with a low security priority when it receives the first report signal, and unlocks the electric locks in areas with a high security priority when it receives the second report signal.

3. A fire alarm system that receives a fire signal from a fire detector with a fire receiver and outputs a fire alarm; an entrance / exit control system that receives information from the reading terminal at an entrance / exit control device and unlocks an electric lock when the information matches registered information; In a disaster prevention linkage system that links the fire receiver transmits a notification signal to the entrance / exit control device when the fire alarm is output; The entrance / exit control device unlocks the electric locks in areas with a low security priority when it receives the alarm signal, and unlocks the electric locks in areas with a high security priority when the alarm signal has not stopped even after the time required to confirm the fire scene has elapsed since receiving the alarm signal.This disaster prevention linkage system is characterized by this.

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