Disaster prevention linked system

Abstract

To provide a disaster prevention interlocking system that reduces the number of simultaneously unlocking entrance / exit management systems linked to non-fire alarms in a fire alarm system, and to effectively utilize system linkage that unlocks all at once in response to the reception of a fire signal.SOLUTION: A disaster prevention interlocking system interlocks a fire alarm system and an entrance / exit management system, wherein a fire receiver 14 transmits a first transfer notification signal to an entrance / exit control board 26 when a fire alarm is output, and transmits a second transfer notification signal to the entrance / exit control board 26 when a fire signal is continuously received even after a time required for confirming a fire scene from the transmission of the first transfer notification signal, and the entrance / exit control board 26 causes an electric lock 30 in a low-priority area A1 to unlock when the first transfer notification signal is received, causes the electric lock 30 in the low-priority area A1 to lock when the reception of the first transfer notification signal stops without receiving the second transfer notification signal, and causes the electric lock 30 in a high-priority area A2 to unlock when the second transfer notification signal is received without stopping reception of the first transfer notification signal.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a disaster prevention linkage system that operates in conjunction with a fire notification system for monitoring fires and an entrance / exit system that recognizes the entry and exit of users and controls an electric lock.

Background Art

[0002] Conventionally, in facilities such as office buildings, a fire notification system is installed to monitor fires. The system receives a fire signal from a fire detector with a receiver, outputs a fire alarm, and also outputs a transfer signal. In addition, an entrance / exit management system is installed. When the entrance / exit control device receives user ID information read by a reading terminal such as a card reader installed outside the door and determines that it matches the pre-registered registered user ID information, the electric lock of the door is unlocked to prevent unauthorized entry by third parties other than authorized personnel.

[0003] By the way, the entrance / exit management system that controls the electric lock of the door installed in the facility may hinder evacuation and firefighting activities in the event of a fire. Therefore, when the receiver of the fire notification system receives a fire signal and alerts, a system linkage is performed by sending the transfer signal output at that time to the entrance / exit management system to unlock all the electric locks, so as not to interfere with evacuation and firefighting activities.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in such an interlocking system where the access control system controls the simultaneous unlocking of electric locks via relay signals from a conventional fire alarm system, there is a problem in that even if the fire alarm receiver receives a fire signal from a fire detector due to a cause other than fire and outputs a false alarm, the access control system will still simultaneously unlock the electric locks via the relay signal, compromising the security of the facility provided by the access control system.

[0006] Therefore, even if the system is linked to control the simultaneous unlocking of electric locks in the access control system based on relay signals from the fire alarm system, in actual operation, it is highly likely that the system will deal with false fire alarms by performing a relay signal deactivation operation, which stops the simultaneous unlocking control function of the access control system based on relay signals from the fire alarm system. This results in a problem where the function of linking the system to simultaneously unlock the electric locks of the access control system based on relay signals from the fire alarm system, which is intended to prevent interference with evacuation and firefighting activities, is not utilized.

[0007] The present invention aims to provide a disaster prevention interlocking system that reduces the simultaneous unlocking of access control systems linked to false fire alarms in fire alarm systems, and enables effective use of system interlocking that simultaneously unlocks in response to the reception of fire signals. [Means for solving the problem]

[0008] (Third invention: Locking / unlocking control based on priority) The third invention of this 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 access control system that receives identification information from a reading terminal and unlocks an electric lock when it determines that the information matches the registered identification information, It is a disaster prevention interlocking system that links together, The fire alarm receiver transmits a first transfer signal to the access control device when it outputs a fire alarm, and if the fire signal continues to be received even after the time required to confirm the fire scene has elapsed since the transmission of the first transfer signal, it transmits a second transfer signal to the access control device. The access control device is characterized by unlocking the electric locks in areas with lower security priority when it receives a first alarm signal, and locking the electric locks in areas with lower security priority when the reception of the first alarm signal stops without receiving a second alarm signal.

[0009] Furthermore, if the access control system receives the second alarm signal without interrupting the reception of the first alarm signal, it will unlock the electric locks in areas with high security priority.

[0010] (Fourth Invention: Another form of lock / unlock control based on priority) The fourth invention of this 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 access control system that receives identification information from a reading terminal and unlocks an electric lock when it determines that the information matches the registered information, It is a disaster prevention interlocking system that links together, The fire alarm receiver, when it outputs a fire alarm, transmits a relay signal to the access control device. The access control device is characterized by unlocking the electric locks in areas with lower security priority when it receives a relay signal, and locking the electric locks in areas with lower security priority if the relay signal stops before the time required to confirm the fire scene has elapsed after the reception of the relay signal.

[0011] Furthermore, the access control system will unlock the electric locks in high-security-priority areas if the time required to confirm the fire scene has elapsed since the reception of the alarm signal without interruption. [Effects of the Invention]

[0012] (Effects of the second invention) According to the second invention of the present application, when the fire alarm receiver determines a fire from a fire signal received from a fire detector based on the set sensitivity and outputs a fire alarm, it changes the setting to a higher sensitivity than the set sensitivity, and when it determines a fire based on the changed higher sensitivity, it transmits a relay signal to the access control device, and when the access control device receives the relay signal transmitted by the fire alarm receiver, it unlocks the electric lock. Therefore, since it does not transmit a relay signal to the access control device at the stage when it determines a fire from a fire signal from a fire detector based on the set sensitivity and issues an alarm, it reliably prevents the electric lock from being unlocked in the event of a false fire alarm, and the security of the access control system is not compromised even if there is a false fire alarm in the fire alarm system.

[0013] Furthermore, if 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 from an actual fire, the fire will be reliably detected again based on the changed higher sensitivity, and the transmission of the alarm signal will quickly unlock all electric locks by the access control system, enabling appropriate responses to evacuation and firefighting activities.

[0014] On the other hand, in the case of a false fire alarm, if the system is switched to high sensitivity and a fire is detected again, other causes besides the transient fire may be resolved before the system can be re-evaluated. As a result, the system will not detect a fire even after switching to high sensitivity, and no relay signal will be transmitted, thus reliably preventing simultaneous unlocking linked to a false fire alarm.

[0015] (Effects of the third invention) According to the third invention of this application, the fire alarm receiver transmits a first transfer signal to the access control device when it receives a fire signal from a fire detector and outputs a fire alarm, and transmits a second transfer signal to the access control device if the reception of the fire signal continues even after the time required to confirm the fire scene has elapsed since the transmission of the first transfer signal, and the access control device unlocks the electric locks in areas with low security priority when it receives the first transfer signal transmitted by the fire alarm receiver, and unlocks the electric locks in areas with high security priority when it receives the second transfer signal transmitted by the fire alarm receiver, thus preventing fire detection due to causes other than fire. In the case of a false fire alarm, where the system receives a fire signal from a device and issues an alarm, the transmission of the first transfer signal will simultaneously unlock only the electric locks installed in areas with low security priority, while the electric locks installed in areas with high security priority will not be unlocked. If, during on-site verification before the transmission of the second transfer signal, it is determined that there is no fire alarm, the transmission of the first transfer signal will be stopped by resetting the fire alarm receiver. This will reset the simultaneous unlocking of all electric locks installed in areas with low security priority and lock them all simultaneously, ensuring that the security of the access control system is not compromised even if there is a false fire alarm in the fire alarm system.

[0016] Furthermore, if a fire detector is triggered by a fire, a second alarm signal is sent after the first alarm signal has elapsed to allow time for the fire scene to be confirmed. This also triggers the simultaneous unlocking of electric locks installed in high-security areas, enabling appropriate responses to evacuation and firefighting activities.

[0017] (Effects of the fourth invention) According to the fourth invention of the present application, when the fire receiver receives a fire signal from a fire detector and outputs a fire alarm, it transmits a transfer signal to the entrance / exit control device. When the entrance / exit control device receives the transfer signal transmitted by the fire receiver, it unlocks the electric locks in the area with a lower security priority. If the transfer signal has not stopped even after the time required to confirm the fire scene has elapsed since the reception of the transfer signal, it unlocks the electric locks in the area with a higher security priority. Therefore, in the case of a non-fire alarm in which a fire signal is received and an alarm is issued due to the activation of a fire detector caused by a cause other than a fire, only the electric locks installed in the area with a lower security priority are unlocked simultaneously by the transmission of the transfer signal. Until a predetermined time required to confirm the fire scene has elapsed, the electric locks installed in the area with a higher security priority are not unlocked simultaneously. During that time, if it is confirmed on-site that it is a non-fire alarm, the transmission of the transfer signal is stopped by the recovery operation of the fire receiver. As a result, the simultaneous unlocking of all the electric locks installed in the area with a lower security priority is reset and they are locked simultaneously, and the security of the entrance / exit management system is not impaired even if there is a non-fire alarm in the fire alarm system.

[0018] Also, when the fire detector issues an alarm due to a fire, the electric locks installed in the area with a higher security priority are also unlocked simultaneously after the time required to confirm the fire scene has elapsed since the reception of the transfer signal, enabling appropriate response to evacuation actions and fire-fighting activities.

Brief Description of the Drawings

[0019] [Figure 1] Explanatory diagram showing the outline of a disaster prevention linkage system that links an entrance / exit management system to a fire alarm system [Figure 2] Block diagram showing the functional configurations of the fire receiver and the entrance / exit control panel in the first invention [Figure 3] Time chart showing the system linkage operation of FIG. 2 in signal format [Figure 4] Time chart showing the system linkage operation of FIG. 2 in flow format [Figure 5] Time chart showing the system linkage operation of FIG. 2 for performing accumulation reception in signal format [Figure 6] Figure 2 shows a time chart in flowchart format illustrating the system-linked operation for storage and reception. [Figure 7] Block diagram showing the functional configuration of the fire alarm receiver and access control panel in the second invention. [Figure 8] Figure 7 is a time chart showing the system's linked operation in a flowchart format. [Figure 9] Block diagram showing the functional configuration of the fire alarm receiver and access control panel in the third invention. [Figure 10] Figure 9 is a time chart showing the system's linked operation in signal format. [Figure 11] A time chart showing the system-linked operation in the fourth invention in a flowchart format. [Modes for carrying out the invention]

[0020] [Overview of the disaster prevention linked system] Figure 1 is an explanatory diagram illustrating the overview of a disaster prevention interlocking system that links a fire alarm system with an access control system.

[0021] (Overview of fire alarm systems) As shown in Figure 1, the fire alarm system 10 is equipped with a fire alarm receiver 14, and detector circuits L1 to Ln are drawn from the fire alarm receiver 14 for each protected area, and fire detectors 16 are connected between them and the common line C, as shown representatively for detector circuit L1.

[0022] The fire detector 16 is a so-called on / off type smoke detector or heat detector, which detects changes in physical phenomena such as smoke and heat associated with a fire, triggers 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 detector latitude L1 to Ln, and outputs a fire alarm when it receives a fire signal from the fire detector 16.

[0023] The fire alarm operation of the fire receiver 14, upon receiving a fire signal from the fire detector 16, involves illuminating or flashing the fire indicator light, outputting a fire alarm sound, illuminating or flashing the area indicator light corresponding to the detector circuit from which the fire alarm was triggered to indicate the fire area, and controlling the output of the area audible alarm, etc.

[0024] Furthermore, when the fire alarm receiver 14 receives a fire signal from the fire detector 16 and outputs a fire alarm, it performs a predetermined processing operation to determine whether it is a false alarm (a fire alarm output due to receiving a fire signal from the fire detector 16 due to a cause other than fire) or a fire alarm (a fire alarm output due to receiving a fire signal from the fire detector 16 due to an actual fire). If it confirms a fire alarm due to an actual fire, it sends a transfer signal to the access control system 12 to perform an interlocking operation. On the other hand, if it confirms a false alarm, it performs control to disable interlocking without sending a transfer signal to the access control system 12.

[0025] (Overview of the access control system) As shown in Figure 1, the access control system 12 consists of a communication control device 20, a central device 22 equipped with web server functionality located in a control room or the like, clients 24 that can access the central device 22, access control panels 26 located near each room, a card reader 28 located on the exit side of each room's door, and electric locks 30 located on each door.

[0026] The communication control device 20 connects the central device 22 to the access control panel 26 via a serial transmission line 21 such as RS422, and also connects to the access control panel 26 via a serial transmission line 25 such as RS485. Furthermore, it connects to the fire alarm receiver 14 via a serial transmission line 18 used for alarm transmission, such as RS232, enabling mutual data transmission and control transmission between the central device 22 and the access control panel 26. In addition, it enables the transmission of alarm signals from the fire alarm receiver 14 to the access control panel 26 via the central device 22. The client 24 connects to the central device 22 via a LAN line 23 such as Ethernet, and is able to access the central device 22 and refer to and view access control information.

[0027] In operating the access control system 12, user ID information (user identification information) of users permitted to enter and exit each room is pre-configured in the central device 22, and this user ID information is uploaded and registered in the access control panel 26.

[0028] When a user enters or leaves a room, they insert or bring close a contact-type or contactless card containing their user ID information into the card reader 28. The user ID information read by the card reader 28 is transmitted to the access control panel 26, where it is compared with the registered user ID information. If the access control panel 26 determines that the user ID information matches, it unlocks the electric lock 30 to allow the user to enter the room. If the user ID information does not match, it keeps the electric lock 30 locked and refuses the user entry.

[0029] Furthermore, when the access control panel 26 receives a relay signal transmitted by the fire alarm receiver 14 via the central device 22, it performs a simultaneous unlocking control to unlock all of the electric locks 30 or all of a pre-set specific electric lock 30.

[0030] [Embodiment of the First Invention] Figure 2 is a block diagram showing the functional configuration of the fire alarm receiver and access control panel in the first invention of this application.

[0031] (Configuration of fire alarm receiver) As shown in Figure 2, the fire alarm receiver 14 is equipped with a control unit 32, which is a function realized, for example, by the execution of a program. The hardware used is a computer circuit equipped with a CPU, memory, various input / output ports, etc.

[0032] The control unit 32 is equipped with a receiving unit 34, a recovery unit 36, an operation unit 42, a display unit 44, an alarm unit 46, and a transmission unit 48.

[0033] The receiving unit 34 is provided in accordance with the detector lines L1 to Ln and receives and outputs fire signals from the fire detectors 16. The recovery unit 36 ​​temporarily cuts off the power supply to the detector lines L1 to Ln to restore the fire detectors 16 that have activated the alarm.

[0034] The control unit 42 is equipped with a main sound stop switch, a zone sound stop switch, a transmission stop switch, etc. The display unit 44 is equipped with various indicator lights and displays necessary for fire monitoring, such as a fire indicator light and a zone indicator light.

[0035] The alarm unit 46 is equipped with a speaker and outputs a fire alarm using the main sound, as well as voice output of operation sounds associated with switch operation and various guidance messages.

[0036] The alarm transmission unit 48 transmits an alarm signal to the access control system 12 via a serial transmission line 18 such as RS232 to control the simultaneous unlocking of the electric locks.

[0037] When the control unit 32 detects a fire alarm from the received fire signal output of any of the receiving units 34 corresponding to the detector lines L1 to Ln, it instructs the display unit 44 and the alarm unit 46 to display a representative fire or fire area, and to output a fire alarm sound.

[0038] Furthermore, when the control unit 32 receives a fire signal due to the activation of a fire detector 16 and outputs a fire alarm, it activates a recovery timer, and when a predetermined time T1 has elapsed, it controls a recovery unit 36 ​​provided in accordance with the detector line to which the activated fire detector 16 is connected to temporarily cut off the power supply, resets and restores the activated fire detector 16, and when it receives a fire signal due to a re-activation of the fire detector 16 after the restoration, it instructs the transmission unit 48 to transmit a transmission signal to the access control system 12.

[0039] For the sake of simplicity, the diagram shows a case where one access control panel 26 is connected to the serial transmission line 25 from the communication control device 20. However, in reality, as shown in Figure 1, multiple access control panels 26 are connected as needed. Also, the diagram shows a case where one card reader 28 and one electric lock 30 are connected to the access control panel 26. However, in reality, as shown in Figure 1, multiple sets of these are connected as needed.

[0040] (Configuration of the access control panel) As shown in Figure 2, the access control panel 26 is equipped with a control unit 50, which is a function realized, for example, by the execution of a program. The hardware used is a computer circuit equipped with a CPU, memory, various input / output ports, etc.

[0041] The control unit 50 is provided with a transmission unit 52 to which the communication control device 20 is connected, a transmission unit 54 to which the card reader 28 is connected, and a drive unit 56 to which the electric lock 30 is connected.

[0042] The control unit 50 uploads and registers user ID information from the central device 22. When it receives user ID information from the card reader 28 via the transmission unit 54 by reading the user card, it compares this with the registered user ID information. If a match is found, it unlocks the electric lock 30. If a mismatch is found, it keeps the electric lock 30 locked.

[0043] Furthermore, when the control unit 50 receives a transmission signal from the fire alarm receiver 14 via the communication control device 20 through the center device 22, or directly from the communication control device 20, via the transmission unit 52, the control unit 50 instructs the drive unit 56 to energize the solenoid of the electric lock 30 and perform unlocking control.

[0044] When the control unit 50 receives a transmission signal from the fire alarm receiver 14, the unlocking control of the electric locks 30 is performed by all access control panels 26 connected to the serial transmission line 25. Therefore, when considering the access control system 12 as a whole, the transmission signal from the fire alarm receiver 14 will trigger a simultaneous unlocking of all electric locks 30.

[0045] (Control operation for simultaneous unlocking via relay signal) Figure 3 is a time chart showing the system-linked operation of Figure 2 in signal format, divided into Figures 3(A) to (F), which show the operation of the fire detector 16, the reset unit 36, the reset timer, the fire alarm, the signal transfer unit 48, and the simultaneous unlocking operation. Note that each operation in Figure 3 is shown with a binary value, 0 for non-operating state and 1 for operating state.

[0046] When the fire detector 16 activates and transmits a fire signal at time t1 in Figure 3(A), the fire alarm receiver 14 receives it and outputs a fire alarm as shown in Figure 3(D). In addition, upon receiving the fire signal, the recovery timer shown in Figure 3(C) is activated, and at time t2, after a predetermined set time T1 has elapsed, the recovery unit 36 ​​shown in Figure 3(B) is activated to temporarily cut off the power supply to the activated fire detector 16, and then a recovery operation is performed to supply power at time t3.

[0047] If the fire detector 16 has detected an actual fire and activated an alarm due to the recovery operation by the recovery unit 36, the fire detector 16, which was reset and stopped when the power was cut off at time t2, will activate an alarm again and transmit a fire signal to the fire receiver 14 when the power is turned on at time t3 and operations resume.

[0048] Based on the re-reception of the fire signal following the recovery operation of the fire detector 16, the fire alarm receiver 14 transmits a transmission signal from the transmission unit 48 to the access control system 12, as shown in Figure 3(E), and simultaneously unlocks the electric locks 30, as shown in Figure 3(F).

[0049] On the other hand, in the case of a non-fire alarm caused by a transient event other than fire, such as smoke from smoking or steam from cooking, even if the recovery unit 36 ​​recovers the fire detector 16 that triggered the alarm after a predetermined time T1 has elapsed, the cause other than fire will have disappeared by then, and the fire detector 16 will not trigger the alarm again. Therefore, the fire receiver 14 will not transmit a transfer signal, and the electric locks 30 of the access control system will not be simultaneously unlocked.

[0050] Figure 4 is a time chart showing the system-linked operation of Figure 2 in flowchart format, illustrating the operation of the access control panel in conjunction with the operation of the fire alarm receiver.

[0051] As shown in Figure 4, when the fire alarm receiver 14 detects the reception of a fire signal from the fire detector 16 in step S1 (hereinafter, "step" is omitted), it proceeds to S2 and outputs a fire alarm. Subsequently, in S3, it starts the recovery timer, and in S4, when it detects that a predetermined time T1 has elapsed according to the recovery timer, it performs the recovery operation of the fire detector 16 in S5.

[0052] In response to the reset operation of the fire detector 16 in S5, if the system detects a re-fire from the fire detector 16 in S6, it proceeds to S7 and sends a transfer signal to the access control panel 26. When the access control panel 26 receives the transfer signal from the fire alarm receiver 14, it energizes the solenoid of the electric lock 30 in S8 to perform simultaneous unlocking control.

[0053] On the other hand, if S6 does not detect a re-fire alarm from the fire detector 16 in response to the recovery operation in S5, the transmission of the transfer signal in S7 is skipped and the process proceeds to S9, and the simultaneous unlocking of the 30 electric locks is not performed.

[0054] Furthermore, when the fire alarm receiver 14 detects in S9 that it has received a request for fire restoration operation based on confirmation that the fire has been extinguished, it proceeds to S10 and stops transmitting the transfer signal. In response, the access control panel 26 proceeds to S11 and performs lock restoration control, stopping the power supply to the solenoids of the electric locks that were simultaneously unlocked in S8 and simultaneously locking them.

[0055] (System-linked operation for stored reception) The control unit 32 of the fire alarm receiver 14 shown in Figure 2 may be equipped with a storage reception control function. In order to suppress false alarms, the storage reception by the control unit 32 does not output a fire alarm even when it receives a fire signal from the fire detector 16, but instead performs storage reception, which involves continuously receiving the fire signal for a predetermined storage time Ts, before confirming the fire and outputting a fire alarm.

[0056] Furthermore, even if the control unit 32 confirms a fire through stored reception and outputs a fire alarm, it activates the recovery timer, and after a predetermined time T1 has elapsed, it controls the recovery unit 36, which is provided in accordance with the detector line to which the triggered fire detector 16 is connected, to temporarily cut off the power supply, reset the triggered fire detector 16 and restore it, and if it receives a fire signal due to a re-fire from the fire detector 16 after the restoration, it instructs the transmission unit 48 to transmit the transmission signal to the access control system 12. The other configurations and functions are the same as in Figure 2 when stored reception is not performed.

[0057] (Control operation for simultaneous unlocking via stored reception and transmission signals) Figure 5 is a time chart showing the system-linked operation of Figure 2, which performs storage reception, in signal format. Divided into Figures 5(A) to (G), it shows the operation of the fire detector 16, the reset unit 36, the storage timer, the reset timer, the fire alarm, the transmission unit 48, and the simultaneous unlocking operation. Note that each operation in Figure 5 is shown with a binary value of 0 for non-operating state and 1 for operating state.

[0058] At time t1 in Figure 5(A), the fire detector 16 triggers and transmits a fire signal, which the fire receiver 14 receives and activates the storage timer shown in Figure 5(C). During storage by the storage timer, a storage indicator light on the display unit 44 is illuminated to provide notification.

[0059] When the storage time Ts, which was started at time t1, has elapsed, and time t2 is reached, as shown in Figure 5(B), the recovery unit 36 ​​is activated to temporarily cut off the power supply to the fire detector 16 that is sounding, and a recovery operation is performed to supply power again at time t3. If the fire detector 16 has detected an actual fire and sounded due to this recovery operation by the recovery unit 36, the fire detector 16, which was reset by the power supply at time t2, will sound again when the power is restored at time t3 and transmit a fire signal to the fire receiver 14. Upon receiving this stored signal, the fire receiver 14 confirms the fire and outputs a fire alarm as shown in Figure 5(E).

[0060] Upon confirmation of a fire through accumulated reception, the fire alarm receiver 14 activates the recovery timer shown in Figure 5(D) at time t3. After a predetermined set time T1 has elapsed, at time t4, as shown in Figure 5(B), it operates the recovery unit 36 ​​to temporarily cut off the power supply to the fire detector 16 that is sounding an alarm, and then performs a recovery operation to supply power at time t5. If the fire detector 16 has detected an actual fire and continues to sound an alarm as a result of this recovery operation of the recovery unit 36, it will sound an alarm again and transmit a fire signal to the fire alarm receiver 14 when the power is turned on at time t5.

[0061] Based on the re-reception of the fire signal following the recovery operation of the fire detector 16, the fire alarm receiver 14 transmits a transmission signal from the transmission unit 48 to the access control system 12, as shown in Figure 5(F), and simultaneously unlocks the electric locks 30, as shown in Figure 5(G).

[0062] On the other hand, in the case of a false fire alarm caused by a transient event other than fire, such as smoke from smoking or steam from cooking, even if the fire alarm receiver 14 confirms a fire through accumulated reception, when the recovery unit 36 ​​temporarily shuts off the power supply and restores the fire detector 16 after a predetermined time T1 has elapsed due to the subsequent recovery timer, the fire detector 16 will not re-fire because the cause other than fire has disappeared, no transfer signal will be transmitted, and the electric locks in the access control system will not be simultaneously unlocked.

[0063] Figure 6 is a time chart in flowchart format showing the system-linked operation of Figure 2, which performs storage reception, and illustrates the operation of the access control panel in conjunction with the operation of the fire alarm receiver.

[0064] As shown in Figure 6, when the fire alarm receiver 14 detects the reception of a fire signal from the fire detector 16 in S21, it proceeds to S22 to activate the storage timer. When it detects the elapsed storage time Ts by the storage timer in S23, it performs a recovery operation on the fire detector 16 in S24. In conjunction with this recovery operation, it detects the reception of a re-alarm from the fire detector 16 in S25, confirms the fire, and outputs a fire alarm in S26.

[0065] Next, in S27, the recovery timer is started, and in S28, when the recovery timer detects that a predetermined time T1 has elapsed, the fire detector 16 is restored in S29. In response to the restoration operation of the fire detector 16 in S29, when the system detects that a re-fire alarm has been received from the fire detector in S30, it proceeds to S31 and sends a transfer signal to the access control panel 26. When the access control panel 26 receives the transfer signal from the fire alarm receiver 14, it energizes the solenoid of the electric lock 30 in S32 to perform simultaneous unlocking control.

[0066] On the other hand, if S30 does not detect a re-fire alarm from the fire detector 16 in response to the recovery operation in S29, the transmission of the transfer signal in S31 is skipped and the process proceeds to S33, and the simultaneous unlocking of the electric locks 30 is not performed.

[0067] Furthermore, when the fire alarm receiver 14 detects in S33 that it has received a request for fire restoration operations based on confirmation that the fire has been extinguished, it proceeds to S34 and stops transmitting the transfer signal. In response, the access control panel 26 proceeds to S35 and performs lock restoration control, stopping the power supply to the solenoids of the electric locks 30 that were simultaneously unlocked in S32 and simultaneously locking them.

[0068] The control system, which confirms a fire through such accumulated reception, performs recovery operations, and then transmits a transfer signal based on a re-report, is essentially the same as performing the recovery operations for a fire alarm twice in a row in order to transmit a transfer signal. By essentially repeating the recovery operations twice and transmitting a transfer signal only when a fire is detected, it is possible to more reliably suppress the transmission of transfer signals due to false fire alarms.

[0069] Furthermore, in the embodiment of the first invention, a transfer signal is transmitted when a fire is detected by a re-fire alarm resulting from a single recovery operation. However, in order to more reliably avoid transmitting a transfer signal due to a false fire alarm, the recovery operation is repeated two or more times, and a transfer signal is transmitted when a fire is detected during the final recovery operation, thereby more reliably suppressing the transmission of a transfer signal due to a false fire alarm.

[0070] [Embodiment of the Second Invention] Figure 7 is a block diagram showing the functional configuration of the fire alarm receiver and access control panel in the second invention of this application.

[0071] (Configuration of fire alarm receiver) As shown in Figure 7, an analog detector 62 is connected between the transmission lines SL and SC that extend from the fire alarm receiver 14 of the fire alarm system 10, and the fire alarm receiver 14 functions as a so-called R-type receiver.

[0072] Each analog detector 62 has a predetermined address set in advance, for example, from a maximum of 255 addresses per line. Based on the reception of a batch AD conversion command sent from the fire alarm receiver 14 at a predetermined interval of, for example, one minute, it detects and holds analog data such as smoke concentration or temperature, and then sends analog data in response to a polling command sent from the fire alarm receiver 14 that specifies its own address.

[0073] Furthermore, the analog detector 62 has a function to send a fire interrupt signal to the fire receiver 14 that sets all signal bits to 1 if the detected analog data exceeds a predetermined fire level.

[0074] The fire alarm receiver 14 is equipped with a control unit 64, which is a function realized, for example, by the execution of a program. The hardware used is 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 transmission unit 48.

[0075] The transmission unit 60 transmits and receives various commands and data to and from the analog sensor 62 in a predetermined signal format. In this case, the transmission unit 60 transmits a downstream signal to the analog sensor 62 in voltage mode using a voltage pulse train, and receives an upstream signal in current mode using a current pulse train transmitted from the analog sensor 62.

[0076] The operation unit 42, display unit 44, alarm unit 46, and signal transmission unit 48 are the same as in the embodiment shown in Figure 2. Of these, the signal transmission unit 48 transmits a signal to the access control system 12 via a serial transmission line 18 such as RS232 to control the simultaneous unlocking of the electric locks.

[0077] The control unit 64 instructs the transmission unit 60 to send a batch AD conversion command, for example, at a 1-minute interval, and also sends a polling command specifying 255 addresses sequentially to the analog sensor 62 during the idle time between batch AD conversion commands, and receives and processes analog data from the analog sensor 62 at the response timing.

[0078] Furthermore, when the control unit 64 receives a fire interrupt signal from an analog detector 62, it sends a group search command specifying predetermined group addresses sequentially to detect the address of the analog detector 62 that triggered the fire interrupt. It then centrally sends AD conversion commands and polling commands to the analog detector 62 at the detected address to collect analog data and perform control to determine if a fire has occurred.

[0079] Furthermore, the control unit 64 collects analog data from the analog detector 62 that has triggered a fire interrupt, and if it determines that there is a fire based on a predetermined setting sensitivity, it outputs a fire alarm, changes the setting sensitivity to a high sensitivity, and after a predetermined time has elapsed, if it determines that there is a fire based on the changed high sensitivity, it instructs the alarm transfer unit 48 to transmit an alarm transfer signal.

[0080] To explain this change to high sensitivity in more detail, the control unit 64, for example, if it determines that there is a fire because the smoke density data is above a predetermined fire judgment level which corresponds to a predetermined set sensitivity, outputs a fire alarm and changes the predetermined fire judgment level to a lower predetermined fire judgment level which corresponds to high sensitivity. After a predetermined time has elapsed, if it determines that there is a fire based on the changed high-sensitivity fire judgment level, it instructs the transmission unit 48 to transmit a transmission signal.

[0081] (Configuration of the access control panel) As shown in Figure 7, the access control panel 26 is equipped with a control unit 50, and the control unit 50 is provided with a transmission unit 52 to which the communication control device 20 is connected, a transmission unit 54 to which the card reader 28 is connected, and a drive unit 56 to which the electric lock 30 is connected, and its configuration and function are the same as in the embodiment shown in Figure 2.

[0082] (Control operation for simultaneous unlocking via relay signal) Figure 8 is a time chart showing the system-linked operation of Figure 7 in flowchart format, illustrating the operation of the access control panel in conjunction with the operation of the fire alarm receiver.

[0083] As shown in Figure 8, in S41, the fire alarm receiver 14 sends a batch AD conversion command at one-minute intervals to convert the smoke concentration detection signal or temperature detection signal to analog data at all analog detectors 62 connected to the same transmission line and store it as analog data. Subsequently, it sends a polling command specifying the detector addresses sequentially, and collects detector data by receiving and storing the analog data transmitted from the analog detectors 62 at the response timing.

[0084] Next, the process proceeds to S42, and upon detecting the reception of a fire interrupt signal transmitted by analog detector 62, it proceeds to S43, where a group search command is sent to search for the address of the analog detector 62 that initiated the fire interrupt. Subsequently, in S44, data collection is performed by repeatedly detecting analog data using the address of the found analog detector 62, and in S45, if a fire is detected based on a predetermined set sensitivity, the process proceeds to S46 and a fire alarm is output. Alternatively, stored reception may be used, where data is collected over a predetermined period of time in S44, a fire is detected in S45 based on the data for that predetermined period, and a fire alarm is output in S46.

[0085] Next, in S47, the current sensitivity setting is changed to a predetermined high sensitivity, and in S48, data from the activated analog detector 62 is collected. After changing to high sensitivity in S47, if a predetermined time has elapsed in S49, the process proceeds to S50, where it detects whether or not there is a fire based on the changed high sensitivity setting. If a fire is detected in S50 based on the high sensitivity, the process proceeds to S51, where a transfer signal is sent to the access control panel 26. When the access control panel 26 receives the transfer signal from the fire receiver 14, in S52 it energizes the solenoid of the electric lock 30 to perform simultaneous unlocking control.

[0086] On the other hand, if S50 does not detect a fire based on high sensitivity, the transmission of the alarm signal in S51 is skipped and the process proceeds to S53, and the simultaneous unlocking of the electric locks 30 is not performed.

[0087] Furthermore, when the fire alarm receiver 14 detects in S53 that it has received a request for fire restoration operations based on confirmation that the fire has been extinguished, it proceeds to S54 and stops transmitting the alarm signal. In response, the access control panel 26 proceeds to S55 and performs lock restoration control, stopping the power supply to the solenoids of the electric locks 30 that were simultaneously unlocked in S52 and simultaneously locking them.

[0088] [Embodiment of the Third Invention] Figure 9 is a block diagram showing the functional configuration of the fire alarm receiver and access control panel in the third invention of this application, characterized in that the simultaneous unlocking of electric locks is performed in stages according to priority.

[0089] (Configuration of fire alarm receiver) As shown in Figure 9, the fire alarm receiver 14 is equipped with a control unit 32, and 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 transmission unit 48. The configuration and functions other than the transmission control of the transmission signal by the control unit 32 and the transmission unit 48 are the same as in the embodiment shown in Figure 2.

[0090] When the control unit 32 of the fire alarm receiver 14 receives a fire signal from the fire detector 16 and outputs a fire alarm, it instructs the transmission unit 48 to send a first transmission signal for areas with low security priority to the access control system 12. If the reception of the fire signal continues even after a predetermined time has elapsed since the transmission of the first transmission signal, which is necessary for confirming the fire scene, it sends a second transmission signal for areas with high security priority to the access control system 12.

[0091] Furthermore, if the control unit 32 detects that a reset operation has been received by the reset switch provided on the operation unit 42 within a predetermined time period after receiving a fire signal and transmitting the first transfer signal from the transfer unit 48, it performs control to stop transmitting the first transfer signal.

[0092] (Configuration of the access control panel) As shown in Figure 9, the access control panel 26 is equipped with a control unit 50, and the control unit 50 is provided with a transmission unit 34 to which the communication control device 20 is connected, and a drive unit 56 to which the electric lock 30 is connected. In addition, a card reader 28 that forms a pair with the electric lock 30 is connected to the control unit 50 via a transmission unit 52, as shown in Figure 2, but this is omitted in Figure 9.

[0093] The electric locks 30 connected to the access control panel 26 via the drive unit 56 are grouped into low-priority area A1, which can tolerate relatively low security, and high-priority area A2, which requires high security, according to the importance of security. The control unit 50 has pre-stored priority information indicating whether each electric lock 30 belongs to low-priority area A1 or high-priority area A2.

[0094] When the control unit 50 receives a first transmission signal from the fire alarm receiver 14 for an area with low security priority, it controls the simultaneous unlocking of the electric locks 30 on all doors installed in the pre-configured low-priority area A1.

[0095] Furthermore, when the control unit 50 receives a second alarm signal transmitted by the fire alarm receiver 14 for a high-security-priority area, it controls the simultaneous unlocking of all electric locks 30 on doors located in the pre-configured high-priority area A2.

[0096] Furthermore, after the control unit 50 receives a first alarm signal from the fire alarm receiver 14 and simultaneously unlocks the electric locks 30 on all doors installed in the low-priority area A1, if it detects that the first alarm signal has stopped without receiving a second alarm signal, it performs control to simultaneously re-lock the electric locks 30 on all doors installed in the low-priority area A1 that were unlocked.

[0097] (Control operation for simultaneous unlocking according to the priority of the relay signal) Figure 10 is a time chart showing the system-linked operation of Figure 9 in flowchart format, illustrating the operation of the access control panel in conjunction with the operation of the fire alarm receiver.

[0098] As shown in Figure 10, when the fire alarm receiver 14 detects the reception of a fire signal from the fire detector 16 in S61, it proceeds to S62 to output a fire alarm, and then in S63 transmits a first transfer signal to the access control panel 26.

[0099] When the access control panel 26 receives the first alarm signal from the fire alarm receiver 14, it performs a control in S64 to simultaneously unlock all electric locks 30 installed on the doors of the low-priority area A1.

[0100] Meanwhile, the fire alarm receiver 14 transmits the first transmission signal in S63 and then detects in S65 whether a predetermined time required for on-site verification has elapsed. Until the predetermined time has elapsed, it monitors in S66 whether or not the fire has been restored by accepting a restoration operation that would be carried out when a person in charge goes to the site and confirms that there is no fire.

[0101] When the system detects that a predetermined time has elapsed for on-site verification in S65, it proceeds to S67 and transmits a second alarm signal to the access control panel 26. Upon receiving the second alarm signal from the fire alarm receiver 14, the access control panel 26 performs a control operation in S68 to simultaneously unlock all electric locks 30 installed on the doors of high-priority area A2.

[0102] On the other hand, if S66 detects a fire restoration operation performed by a person in charge who goes to the site and confirms that there is no fire, S67 and S69, which are for sending the second alarm signal, are skipped, and the simultaneous unlocking of the electric locks 30 installed in high-priority area A2 is not performed.

[0103] Furthermore, when the fire alarm receiver 14 detects in S69 that it has received a request for fire restoration operations based on confirmation that the fire has been extinguished, if it has transmitted the first transfer signal in S63, it stops transmitting this signal in S70. The access control panel 26, having detected the cessation of reception of the first transfer signal, performs lock restoration control in S71 to simultaneously lock the electric locks 30 installed in the low-priority area A1.

[0104] Furthermore, if the fire alarm receiver 14 transmits a first alarm signal in S63 and a second alarm signal in S67, it stops transmitting the first and second alarm signals in S70. The access control panel 26, having detected the cessation of reception of the first and second alarm signals, performs a lock-reset control in S71, simultaneously locking the electric locks 30 installed in the low-priority area A1 and the high-priority area A2.

[0105] In this manner, if the fire alarm receiver 14 outputs a false fire alarm, the transmission of the first transfer signal will simultaneously unlock only the electric locks 30 installed in the low-priority area A1, while the electric locks 30 installed in the high-priority area A2 will not be simultaneously unlocked. Furthermore, if on-site confirmation during the predetermined time before the transmission of the second transfer signal reveals that there is no fire alarm, the transmission of the first transfer signal will be stopped by the recovery operation of the fire alarm receiver 14, resetting the simultaneous unlocking of the electric locks 30 installed in the low-priority area A1 and locking them simultaneously. This prevents the security of the access control system from being compromised by a false fire alarm transfer signal from the fire alarm system.

[0106] Furthermore, if the fire alarm from the fire detector 16 continues, a second transmission signal will be sent a predetermined time after the transmission of the first transmission signal, and the electric locks 30 on the doors installed in high-priority area A2 will be simultaneously unlocked, enabling appropriate responses to evacuation and firefighting activities.

[0107] Furthermore, if the control unit 32 of the fire alarm receiver 14 performs stored reception, it will first issue a fire alarm based on stored reception as shown in S21 to S26 of Figure 6, and then perform the operations shown in S63 to S71 of Figure 10.

[0108] [Embodiment of the 4th Invention] In this embodiment, in a different embodiment from the third invention, the electric locks are grouped according to priority, and in response to the transmission signal from the fire alarm receiver, the electric locks are unlocked simultaneously in stages according to priority.

[0109] (Configuration of fire alarm receiver) The fire alarm receiver in this embodiment is the same as the fire alarm receiver 14 shown in Figure 9. The control unit 32 of the fire alarm receiver 14 is equipped with a receiving unit 34, a recovery unit 36, an operation unit 42, a display unit 44, an alarm unit 46, and a transmission unit 48. The control unit 32 differs in that, when it receives a fire signal from the fire detector 16 and outputs a fire alarm, it instructs the transmission unit 48 to transmit a transmission signal to the access control system 12, and then stops transmitting the transmission signal when it detects that a recovery operation has been accepted. The rest of the configuration and functions are the same as in the embodiment shown in Figure 9.

[0110] (Configuration of the access control panel) The access control panel in this embodiment is the same as the access control panel 26 shown in Figure 9. The access control panel 26 includes a control unit 50, to which a transmission unit 52 is connected to a communication control device 20, and a drive unit 56 is connected to an electric lock 30. In addition, a card reader 28, which is paired with the electric lock 30, is connected to the control unit 50 via a transmission unit 54, as shown in Figure 2, but this is not shown.

[0111] The electric locks 30 connected to the access control panel 26 via the drive unit 56 are grouped into low-priority area A1, which can tolerate relatively low security, and high-priority area A2, which requires high security, according to the importance of security. The control unit 50 pre-stores priority information indicating whether each electric lock 30 belongs to low-priority area A1 or high-priority area A2.

[0112] When the control unit 50 receives a transmission signal from the fire alarm receiver 14, it controls the simultaneous unlocking of the electric locks 30 on all doors located in the pre-set low-priority area A1.

[0113] Furthermore, if the control unit 50 continues to receive the alarm signal even after a predetermined time has elapsed since the fire alarm receiver 14 transmitted the alarm signal and the fire alarm site has been confirmed, it determines that there is an actual fire and controls the simultaneous unlocking of the electric locks 30 on all doors installed in the high-priority area A2.

[0114] Furthermore, if the control unit 50 receives a transmission signal from the fire alarm receiver 14 and simultaneously unlocks all the electric locks 30 installed in the low-priority area A1, and then detects that the transmission signal has stopped before a predetermined time has elapsed necessary to confirm the fire scene, it will perform control to simultaneously re-lock all the electric locks 30 installed in the low-priority area A1 that were previously unlocked.

[0115] (Control operation for simultaneous unlocking of electric locks according to priority) Figure 11 is a time chart showing the system interlocking operation in a flowchart format in an embodiment of the fourth invention, illustrating the operation of the entry / exit control panel in conjunction with the operation of the fire alarm receiver, based on the functional configuration shown in Figure 9.

[0116] As shown in Figure 11, when the fire alarm receiver 14 detects the reception of a fire signal from the fire detector 16 in S81, it proceeds to S82 to output a fire alarm, and then in S83 transmits a transfer signal to the access control panel 26.

[0117] When the access control panel 26 receives a transmission signal from the fire alarm receiver 14, it performs a control in S84 to simultaneously unlock all electric locks 30 installed on the doors of the low-priority area A1. Subsequently, in S85, the access control panel 26 detects whether a predetermined time has elapsed since the simultaneous unlocking of the low-priority area A1 doors, which is necessary for on-site verification on the fire alarm receiver 14 side. Until the predetermined time has elapsed, in S86, it monitors whether the reception of transmission signals has stopped due to the acceptance of a recovery operation to be performed when a person in charge goes to the site and confirms that there is no fire.

[0118] When S85 detects that the predetermined time required for verification has elapsed, the process proceeds to S87 to perform control to simultaneously unlock all electric locks 30 installed in high-priority area A2.

[0119] On the other hand, if the fire alarm receiver 14 detects in S88 that a fire has been restored by a recovery operation performed by an officer who has gone to the site and confirmed that there is no fire, it stops transmitting the alarm signal in S89. Therefore, when the access control panel 26 detects the cessation of reception of the alarm signal in S86, it proceeds to S90, and if the electric locks 30 in the low-priority area A1 have been simultaneously unlocked in S84, it performs lock restoration control in S90 to simultaneously lock the electric locks 30 in the low-priority area A1.

[0120] Furthermore, if the electric locks 30 in low-priority area A1 are simultaneously unlocked in S84 and the electric locks 30 in high-priority area A2 are simultaneously unlocked in S87, then in S90, locking restoration control is performed to simultaneously lock the electric locks 30 in both low-priority area A1 and high-priority area A2.

[0121] In this manner, if the fire alarm receiver 14 outputs a false fire alarm, the transmission of a transfer signal will simultaneously unlock only the electric locks 30 installed in the low-priority area A1, while the electric locks 30 installed in the high-priority area A2 will not be simultaneously unlocked. Furthermore, if it is a false fire alarm, the reception of the transfer signal will stop due to the recovery operation of the fire alarm receiver 14 before the predetermined time required for on-site verification has elapsed. This prevents the security of the access control system from being compromised even if a false fire alarm is detected by the fire alarm system.

[0122] Furthermore, if the fire detector 16 continues to trigger due to a fire, the transmission signal will continue to be received, and after a predetermined time has elapsed necessary for on-site verification, the electric locks 30 on the doors installed in high-priority area A2 will be simultaneously unlocked, enabling appropriate responses to evacuation and firefighting activities.

[0123] Furthermore, if the control unit 32 of the fire alarm receiver 14 performs stored reception, it will first issue a fire alarm based on stored reception as shown in S21 to S26 of Figure 6, and then perform operations S83, S88, and S89 of Figure 11.

[0124] [Modified version of the present invention] (Fire alarm receiver) The fire receiver 14 shown in the embodiments of the first, third, and fourth inventions above took a P-type fire receiver that detects and sounds an alarm on a circuit-by-circuit basis as an example. However, the same can be applied to an R-type fire receiver shown in the embodiment of the second invention, which sets an address for each fire detector and detects and sounds an alarm on a detector-by-detector basis.

[0125] (Electric lock system) The above embodiment takes the case where the electric locks of the access control system are simultaneously unlocked by a relay signal from the fire alarm system as an example. However, an electric lock system that remotely controls electric locks installed on doors by operating an electric lock control panel may also be configured to simultaneously unlock the electric locks by transmitting a relay signal from the fire alarm system as described in the above embodiment.

[0126] (Security gate system) The above embodiment takes the example of simultaneously unlocking the electric locks of the access control system in response to a relay signal from a fire alarm system. However, a suitable security gate system that installs gates at the entrances and exits of a facility and controls opening and closing by reading and authenticating cards may also be configured to simultaneously open the gates in response to the transmission of a relay signal from a fire alarm receiver as described in the above embodiment.

[0127] (others) Furthermore, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of symbols]

[0128] 10: Fire alarm system 12: Access Control System 14: Fire alarm receiver 16:Fire detector 18,21,25,: Serial transmission line 23: LAN connection 20: Communication control device 22: Center device 24: Client 26: Access control panel 28: Card reader 30: Electric lock 32, 50, 64: Control Unit 34: Receiver 36: Recovery Department 48:Transfer Department 52, 54, 60: Transmission section 62: Analog detectors

Claims

1. A fire alarm system that receives fire signals from fire detectors in a fire receiver and outputs a fire alarm, An access control system that receives information from a reading terminal and unlocks an electric lock when it determines that the information matches the registered information, It is a disaster prevention linked system that connects the following: The fire alarm receiver transmits a first transfer signal to the access control device when it outputs the fire alarm, and transmits a second transfer signal to the access control device if the reception of the fire signal continues even after the time required to confirm the fire scene has elapsed since the transmission of the first transfer signal. The aforementioned access control device is characterized in that, upon receiving the first transmission signal, it unlocks the electric locks in areas with lower security priority, and upon receiving the first transmission signal without receiving the second transmission signal, it locks the electric locks in areas with lower security priority.

2. A disaster prevention interlocking system according to claim 1, The aforementioned access control device is characterized in that, when it receives the second transmission signal without interrupting the reception of the first transmission signal, it unlocks the electric lock in the area with high security priority.

3. A fire alarm system that receives fire signals from fire detectors in a fire receiver and outputs a fire alarm, An access control system that receives information from a reading terminal and unlocks an electric lock when it determines that the information matches the registered information, It is a disaster prevention interlocking system that links together, When the fire alarm is output, the fire alarm receiver transmits a relay signal to the access control device. The aforementioned access control device is characterized in that, upon receiving the relay signal, it unlocks the electric locks in areas with lower security priority, and if the relay signal stops before the time required to confirm the fire scene has elapsed from the time of receiving the relay signal, it locks the electric locks in areas with lower security priority.

4. A disaster prevention interlocking system according to claim 3, The aforementioned access control device is characterized by unlocking the electric locks in high-security-priority areas when the time required to confirm the fire scene has elapsed from the reception of the alarm signal without interruption of reception of the alarm signal.

Images