Fire alarm control system and method

Abstract

The present invention provides a fire alarm control system and method, belonging to the field of fire alarm control technology, wherein the system comprises: a plurality of detection modules, for respectively detecting target areas and generating a plurality of detection signals, a fire control module, respectively communicating with the plurality of detection modules, for receiving the plurality of detection signals, obtaining the corresponding working states of the plurality of detection modules based on the output values ​​of the plurality of detection modules, obtaining the fault information of the detection modules based on the numbering information corresponding to the plurality of detection modules and the corresponding working states of the plurality of detection modules, obtaining the corresponding temperature abnormality of the target area based on the temperature information of the target area, and obtaining the fire alarm information of the target area based on the corresponding temperature abnormality of the target area and the position information of the target area. By exchanging data between the fire control module and the plurality of detection modules, the fire alarm system can be inspected and alarmed at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of fire alarm control, and in particular to a fire alarm control system and method. Background Art

[0002] Existing fire alarm control systems are composed of regional or centralized fire alarm controllers. Each fire alarm controller contains several bus disks and loop cards inside the cabinet as shown in the figure below. The cabinet contains various field loop devices (smoke sensors, temperature sensors, manual alarms, sound and light alarms) outside the cabinet, which are connected to different loop cards in the cabinet. When the main control display screen of the controller fails, the entire controller is paralyzed. When a loop card in the cabinet fails, the field loop equipment connected to this loop card is also paralyzed. When a specific loop device in a fire protection zone of the field loop equipment, such as a smoke sensor, fails, the current fire protection zone is paralyzed.

[0003] Especially in many important places, such as nuclear power, power plants, subways, chemical industry and other important places, the fire alarm cannot work normally during the maintenance period. For maintenance, the work, power and production must be stopped. When a fault occurs, it cannot be repaired in time. It can only wait until a certain maintenance time in a certain year, first stop the work and power, and then implement the maintenance. During the period from equipment failure to maintenance, the fire alarm control system is in a sick working state, and even loses part of the alarm function, which poses a great safety hazard. Therefore, there is a technical problem in the prior art that the fire alarm system cannot be repaired and alarmed at the same time. Summary of the invention

[0004] In view of this, it is necessary to provide a fire alarm control system and method to solve the technical problem in the prior art that the fire alarm system cannot be repaired and alarmed at the same time.

[0005] In order to solve the above technical problems, on the one hand, the present invention provides a fire alarm control system, comprising: Multiple detection modules are used to detect the target area respectively and generate multiple detection signals; the detection signals are: the number information corresponding to the multiple detection modules, the output values ​​of the multiple detection modules, the location information of the target area and the temperature information of the target area; The fire control module is respectively connected to the plurality of detection modules for receiving a plurality of detection signals, obtaining the corresponding working states of the plurality of detection modules based on the output values ​​of the plurality of detection modules, and obtaining the fault information of the detection modules based on the corresponding number information of the plurality of detection modules and the corresponding working states of the plurality of detection modules; Based on the temperature information of the target area, the temperature anomaly corresponding to the target area is obtained, and based on the temperature anomaly corresponding to the target area and the position information of the target area, the fire alarm information of the target area is obtained.

[0006] In a possible implementation, the fire control module includes: The first fire controller is respectively connected to the plurality of detection modules for obtaining first fault information of the detection modules based on the number information corresponding to the plurality of detection modules and the working states corresponding to the plurality of detection modules, and obtaining first fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area; The second fire controller is communicatively connected to the multiple detection modules respectively, and is used to obtain second fault information of the detection modules based on the numbering information corresponding to the multiple detection modules and the working status corresponding to the multiple detection modules, and obtain second fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area.

[0007] In one possible implementation, The first fire controller is also in communication connection with the second fire controller, and is used to receive the second fault information of the detection module and the second fire alarm information of the target area, and obtain the fault information of the detection module after the first comparison based on the first fault information of the detection module and the second fault information of the detection module; Based on the first fire alarm information of the target area and the first fire alarm information of the target area, obtaining the fire alarm information of the target area after the first comparison; Based on the fault information of the detection module after the first comparison and the fire alarm information of the target area after the first comparison, a fault detection result of the first fire controller is obtained.

[0008] In one possible implementation, The second fire controller is further used to receive the first fault information of the detection module and the first fire alarm information of the target area sent by the first fire controller, and obtain the fault information of the detection module after the second comparison based on the first fault information of the detection module and the second fault information of the detection module; obtaining fire alarm information of the target area after a second comparison based on the first fire alarm information of the target area and the first fire alarm information of the target area; Based on the fault information of the detection module after the second comparison and the fire alarm information of the target area after the second comparison, a fault detection result of the second fire controller is obtained.

[0009] In a possible implementation, the first fire controller includes: The first loop card is respectively connected to the plurality of detection modules for communication and is used for reading a plurality of detection signals generated by the plurality of detection modules.

[0010] In a possible implementation, it includes: The second loop card is respectively connected to the plurality of detection modules for communication and is used for reading a plurality of detection signals generated by the plurality of detection modules.

[0011] In one possible implementation, The second loop card is also connected to the first loop card for communication, and is used for sending the second fault information of the detection module and the second fire alarm information of the target area to the first loop card, and receiving the first fault information of the detection module and the first fire alarm information of the target area sent by the first loop card.

[0012] On the other hand, the present invention also provides a fire alarm control method, comprising: The target area is detected respectively by multiple detection modules and multiple detection signals are generated; the detection signals are: the number information corresponding to the multiple detection modules, the output values ​​of the multiple detection modules, the location information of the target area and the temperature information of the target area; Receiving multiple detection signals through the fire control module, obtaining the corresponding working states of the multiple detection modules based on the output values ​​of the multiple detection modules, and obtaining the fault information of the detection modules based on the corresponding number information of the multiple detection modules and the corresponding working states of the multiple detection modules; Based on the temperature information of the target area, the temperature anomaly corresponding to the target area is obtained, and based on the temperature anomaly corresponding to the target area and the position information of the target area, the fire alarm information of the target area is obtained.

[0013] In a possible implementation, obtaining the working states corresponding to the multiple detection modules based on the output values ​​of the multiple detection modules includes: The output values ​​of the multiple detection modules are compared with the preset thresholds respectively to obtain the corresponding working states of the multiple detection modules.

[0014] In a possible implementation, obtaining the temperature abnormality corresponding to the target area based on the temperature information of the target area includes: The temperature information of the target area is compared with the preset temperature thresholds to obtain the temperature anomaly corresponding to the target area.

[0015] The beneficial effects of the present invention are as follows: the fire alarm control system provided by the present invention comprises: a plurality of detection modules, which are used to respectively detect the target areas and generate a plurality of detection signals; the detection signals are: number information corresponding to the plurality of detection modules, output values ​​of the plurality of detection modules, location information of the target areas and temperature information of the target areas; a fire control module, which is respectively communicated with the plurality of detection modules, is used to receive the plurality of detection signals, obtains the working states corresponding to the plurality of detection modules based on the output values ​​of the plurality of detection modules, obtains the fault information of the detection modules based on the number information corresponding to the plurality of detection modules and the working states corresponding to the plurality of detection modules; obtains the temperature anomaly corresponding to the target area based on the temperature information of the target area, and obtains the fire alarm information of the target area based on the temperature anomaly corresponding to the target area and the location information of the target area. The present invention provides a fire alarm control system, which includes: multiple detection modules and a fire control module. The multiple detection modules are used to detect target areas respectively and generate multiple detection signals. The fire control module receives the multiple detection signals sent by the multiple detection modules, and performs data analysis on the detection signals to determine whether the multiple detection modules have failed and whether they have output detection signals, and locates the fault points to obtain fault information of the detection modules. At the same time, temperature detection is performed based on the detection signals to determine whether there is temperature abnormality in the target area. If so, a fire alarm is issued to generate fire alarm information of the target area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of an embodiment of a fire alarm control system provided by the present invention; Figure 2 A schematic diagram of an embodiment of a fire alarm control system provided by the present invention; Figure 3 A schematic diagram of the prior art of an embodiment of the fire alarm control system provided by the present invention; Figure 4 A schematic flow chart of an embodiment of a fire alarm control method provided by the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0020] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0021] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a fire alarm control system and method, which are described below respectively.

[0024] Figure 1 A schematic structural diagram of an embodiment of a fire alarm control system provided by the present invention includes: Multiple detection modules 101 are used to detect the target area respectively and generate multiple detection signals; the detection signals are: the number information corresponding to the multiple detection modules 101, the output values ​​of the multiple detection modules 101, the position information of the target area and the temperature information of the target area; The fire control module 102 is respectively connected to the plurality of detection modules 101 for communication, and is used to receive a plurality of detection signals, obtain the corresponding working states of the plurality of detection modules 101 based on the output values ​​of the plurality of detection modules 101, and obtain the fault information of the detection modules based on the corresponding number information of the plurality of detection modules 101 and the corresponding working states of the plurality of detection modules 101; Based on the temperature information of the target area, the temperature anomaly corresponding to the target area is obtained, and based on the temperature anomaly corresponding to the target area and the position information of the target area, the fire alarm information of the target area is obtained.

[0025] It can be understood that the fire alarm control system provided by the present invention greatly improves the accuracy of the alarm and reduces the false alarm rate. In the case of partial equipment or line failure in the system, the alarm accuracy is still high. At the same time, the system can still have the function of fire detection and alarm when some equipment is not working or under maintenance. The system is particularly suitable for installation and use in nuclear power, power plants, subways, chemical industry and other places.

[0026] Figure 2 A schematic diagram of an embodiment of a fire alarm control system provided by the present invention includes: The first fire controller is respectively connected to the plurality of detection modules 101 for communication, and is used to obtain first fault information of the detection modules based on the number information corresponding to the plurality of detection modules 101 and the working states corresponding to the plurality of detection modules 101, and obtain first fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area; The second fire controller is respectively communicated with the multiple detection modules 101, and is used to obtain second fault information of the detection modules based on the numbering information corresponding to the multiple detection modules 101 and the working status corresponding to the multiple detection modules 101, and obtain second fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area.

[0027] It can be understood that the first fire controller and the second fire controller, in addition to detecting their own fire partitions, also detect each other's fire partitions. When the first fire controller fails, the second fire controller can still actively detect the fire partitions of the first fire controller and adopt dual-machine hot backup.

[0028] It can be further understood that the fire detection area between subway station A and station B is detected by two controllers at subway station A and station B at the same time, and each controller can cover the entire fire detection area independently. When a circuit card of one controller or the entire controller fails, the other controller can still take on the entire fire detection work.

[0029] It can be further understood that, in one embodiment, when there is a real fire alarm at the first fire detection circuit in the plurality of detection modules 101, the system performs the following operations: Under normal circumstances, both the first circuit device and the second circuit device can sense the fire alarm. At this time, the alarm first fire controller will detect the first circuit device and the first circuit device alarm, and the alarm second fire controller will also detect the first circuit device and the second circuit device alarm. There will be 4 fire alarm information on the graphic display device. When a fire occurs, the first fire controller fails, and the alarm second fire controller can still detect the first circuit device and the second circuit device alarm. What's more, when the first circuit device fails and cannot work, the alarm host can also detect the alarm information on the second circuit device.

[0030] When the first alarm fire controller fails or is under maintenance, the second alarm fire controller can still work normally and take over all devices on the two loops. The on-site loop devices are also in hot backup working state.

[0031] When the first circuit card of the first fire controller fails, the first circuit card of the second fire controller can still work normally. The alarm of the second circuit equipment is displayed on the alarm first fire controller, and the alarm of the first circuit equipment and the first circuit equipment alarm are displayed on the alarm second fire controller.

[0032] It can be further understood that, in one embodiment, when a false fire alarm is detected at the first fire detection circuit in the plurality of detection modules 101, the system performs the following operations: At this time, it is only possible that the first circuit device of the first fire controller detected a false alarm, and the first circuit device of the second fire controller will not alarm when polling. At the same time, the second circuit device of the first fire controller and the second circuit device of the second fire controller are both detected normally, so it can be quickly determined that the first circuit device of the first fire controller is a false alarm.

[0033] It can be further understood that, in one embodiment, when a device is disconnected between the first fire detection circuit and the second fire detection circuit in the plurality of detection modules 101, the system performs the following operations: At this time, the first fire controller can detect that loop devices 1-1 are online, 1-2... to 1-n are disconnected, and the second fire controller can detect that loop devices 1-2 to 1-n are online, and loop device 1-1 is disconnected. And both the first fire controller and the second fire controller can detect that loop devices 2-1 to 2-n are online.

[0034] If any point of the equipment is disconnected, it will not affect the normal operation of all equipment. The equipment that is disconnected on the first fire controller of the first circuit can work normally on the second fire controller, and the equipment that is disconnected on the second fire controller of the first circuit can still work normally on the first fire controller.

[0035] Based on the above phenomenon, it can be quickly determined that there is a disconnection between the first-loop device and the second-loop device, rather than a device failure.

[0036] The fire detection function of the entire system is not affected, but the hot backup effect of some redundant equipment has failed.

[0037] It can be further understood that, in one embodiment, when there is a short circuit between the first fire detection circuit and the second fire detection circuit in the plurality of detection modules 101, the system performs the following operations: At this time, the isolating switch inside the first circuit device will automatically disconnect, and the first circuit of the first fire controller cannot detect any device. When the second fire controller supplies power, the second circuit device detects a short circuit at the left outgoing line, and the isolating switch inside the second circuit device will automatically disconnect. At this time, the second fire controller will detect that 1-3 to 1-n are online, and 1-1 to 1-2 are offline. Both the first fire controller and the second fire controller can detect that 2-1 to 2-n are online.

[0038] According to the above phenomenon, it can also be quickly determined that there is a fault between the first loop device and the second loop device, and the first loop device and the second loop device are invalid.

[0039] If a fire occurs in the first-loop device at this time, the 2-1 loop device that backs up each other can also detect the fire. At this time, both the first fire controller and the second fire controller can detect that there is an alarm in 2-1. The fire detection function of the entire system is not affected, but the redundant function of some hot backup loop devices fails.

[0040] It can be further understood that, in one embodiment, when there is a problem with the RS485 (a standard that defines the electrical characteristics of drivers and receivers in a balanced digital multipoint system) line or RJ45 (connector type) line of the network between the first fire controller and the first fire controller in the plurality of detection modules 101, the system performs the following operations: Because the data transmitted by the RS485 and RJ45 of the alarm host are the same, there is information redundancy between the two. When any one of the lines fails, the other network line will work normally and will not affect the communication between the first fire controller and the second fire controller.

[0041] When the equipment is working normally, it will not affect the system alarm and can quickly use multi-point alarms to confirm real fire alarm information, reducing the manual confirmation of fire alarms.

[0042] In the event of equipment failure, it will not affect the system alarm, but some redundant functions will fail.

[0043] In the event of a line short circuit, the system alarm will not be affected, but some redundant functions will fail.

[0044] In the case of equipment failure or line short circuit, it can be directly repaired without affecting other alarms. For example, if the line between the first circuit equipment and the first circuit equipment is broken, the first fire controller and the second fire controller can be operated to temporarily stop the upper circuit cards on both sides from working. At this time, there is no electricity on the entire first circuit line, and the first circuit line can be repaired, but the lower second circuit line is still in working condition. The first fire controller and the second fire controller can also perform alarm detection through the second bus circuit. In the case of equipment failure, there is no need to wait for a fixed maintenance time or stop work and power outage for maintenance.

[0045] In some embodiments of the present invention, The first fire controller is also in communication connection with the second fire controller, and is used to receive the second fault information of the detection module and the second fire alarm information of the target area, and obtain the fault information of the detection module after the first comparison based on the first fault information of the detection module and the second fault information of the detection module; Based on the first fire alarm information of the target area and the first fire alarm information of the target area, obtaining the fire alarm information of the target area after the first comparison; Based on the fault information of the detection module after the first comparison and the fire alarm information of the target area after the first comparison, a fault detection result of the first fire controller is obtained.

[0046] It is understandable that in order to solve the problem of false alarms of on-site equipment, the loop equipment of the same fire partition also adopts a hot backup working mode. At the same fire point that needs to be monitored, two different loop devices are installed (such as the two different loop devices above and below in the figure) and are connected to different loop cards respectively. In this way, when a certain fire point alarms, two different loop devices will sense the occurrence of the event.

[0047] At the same time, any loop device can be connected to two different fire alarm controller loop cards at the same time, so that one loop device alarm can be detected by both fire controller loop cards, and the hot backup loop device can also sense the device alarm. When a real fire occurs, the two fire controllers should be able to sense 4 alarm information. This greatly reduces the possibility of false alarms and the cumbersome process of manual on-site confirmation.

[0048] In order to achieve the same loop device being connected to two different alarm fire controller loop cards at the same time, the loop cards also need to be processed algorithmically.

[0049] The communication mode between the conventional loop card and the loop device is one master and multiple slaves. Now two loop cards need to be connected, so it involves a two-master-multiple-slave mode. For this reason, the algorithm needs to be coordinated so that there is only one master device on the loop at a time. Before the loop card needs to switch to the master device, first determine whether there is voltage on the bus. If there is no voltage, it means that there is no master device working at present, and it can switch to the master device. Before switching the master device, compare the last time it worked as the master device to ensure that the time interval from the last time it worked as the master device to the current time it works as the master device is greater than 1 second.

[0050] In some embodiments of the present invention, The second fire controller is further used to receive the first fault information of the detection module and the first fire alarm information of the target area sent by the first fire controller, and obtain the fault information of the detection module after the second comparison based on the first fault information of the detection module and the second fault information of the detection module; obtaining fire alarm information of the target area after a second comparison based on the first fire alarm information of the target area and the first fire alarm information of the target area; Based on the fault information of the detection module after the second comparison and the fire alarm information of the target area after the second comparison, a fault detection result of the second fire controller is obtained.

[0051] It is understandable that the two alarm fire controllers use RS485 (a standard that defines the electrical characteristics of drivers and receivers in a balanced digital multi-point system), CAN (Controller Area Network) or Ethernet to communicate, and any two of the above communication methods can be used to connect two or more alarm fire controllers to a networked state, so that each alarm fire controller can display the information of other alarm fire controllers. The network communication method also uses hot backup to ensure the reliability of the controller networking. When one of the network communications, such as CAN, has a problem, the other network communication, such as Ethernet, can still work normally.

[0052] The two alarm fire controllers work together by using network communication. When the loop card of the first fire controller is ready to inspect and control the loop equipment, the loop card corresponding to the second fire controller is notified to monitor the current loop equipment, and the second fire controller is notified to inspect and control the loop card where the hot backup is located. In this way, at time T1, when the first fire controller uses the first loop card to inspect and control the upper loop equipment, the second loop card of the second fire controller is in the monitoring state. At the same time, when the second fire controller uses the first loop card to inspect and control the lower backup loop equipment at time T1, the second loop card of the first fire controller is also in the monitoring state. At time T2, conversely, the second loop card of the second fire controller inspects and controls the upper loop equipment, and the first loop card is in the monitoring state. At the same time, the second loop card of the first fire controller inspects and controls the lower loop equipment, and the first loop card is in the monitoring state. Repeatedly, the inspection and control are circulated, and the monitoring is switched.

[0053] In order to prevent conflicts, the following provisions are made: the loop card number of the first fire controller with an odd number is the main detection loop, which is connected to the even-numbered loop card of the second fire controller after passing through the on-site loop device; the loop card number of the first fire controller with an even number is the backup detection loop, which is connected to the odd-numbered loop card of the second fire controller after passing through the on-site backup loop device. Generally, for the first fire controller and the second fire controller, the odd-numbered loop card of the first fire controller actively initiates a detection command to the connected on-site device, and the even-numbered loop card of the second fire controller connected to the same loop line passively receives the detection information of the on-site loop device. At the same time, the odd-numbered loop card of the second fire controller actively initiates a detection command to the connected on-site device, and the even-numbered loop card of the first fire controller connected to the same loop line passively receives the detection information of the on-site loop device. When the network communication sends a command that needs to switch direction, the above-mentioned directions of initiating the detection command and passively receiving the detection information are completely reversed.

[0054] When at least one network communication line can ensure that the first fire controller and the second fire controller can be connected to the network, the following table filters out other message information and only retains the message information of master-slave switching. The controller determines the current working mode according to the specific message received, which loop card works in the master mode and which loop card works in the slave mode. The details are shown in Table 1: Table 1: Protocol table for the first fire controller and the second fire controller to obtain detection data

[0055] In some embodiments of the present invention, The first fire controller comprises: The first loop card is respectively connected to the plurality of detection modules 101 for communication, and is used for reading a plurality of detection signals generated by the plurality of detection modules 101 .

[0056] It is understandable that the communication mode between the conventional loop card and the loop device is one master and multiple slaves. Now two loop cards need to be connected, so it involves a two-master-multiple-slave mode. For this reason, the algorithm needs to be coordinated so that there is only one master device on the loop at a time. Before the loop card needs to switch to the master device, first determine whether there is voltage on the bus. If there is no voltage, it means that there is no master device working at present, and it can switch to the master device. Before switching the master device, compare when the master device last worked to ensure that the time interval from the last time it was the master device to the time it is the master device again is greater than 1 second.

[0057] In some embodiments of the present invention, the second fire controller comprises: The second loop card is respectively connected to the plurality of detection modules 101 for communication, and is used for reading a plurality of detection signals generated by the plurality of detection modules 101 .

[0058] It is understandable that in order to solve the problem of false alarms of on-site equipment, the loop equipment of the same fire partition also adopts a hot backup working mode. At the same fire point that needs to be monitored, two different loop devices are installed (such as the two different loop devices above and below in the figure) and are connected to different loop cards respectively. In this way, when a certain fire point alarms, two different loop devices will sense the occurrence of the event.

[0059] At the same time, any loop device can be connected to two different fire alarm controller loop cards at the same time, so that one loop device alarm can be detected by both fire controller loop cards, and the hot backup loop device can also sense the device alarm. When a real fire occurs, the two fire controllers should be able to sense 4 alarm information. This greatly reduces the possibility of false alarms and the tedious process of manual on-site confirmation.

[0060] In order to achieve the same loop device being connected to two different alarm fire controller loop cards at the same time, the loop cards also need to be processed algorithmically.

[0061] The communication mode between the conventional loop card and the loop device is one master and multiple slaves. Now two loop cards need to be connected, so it involves a two-master-multiple-slave mode. For this reason, the algorithm needs to be coordinated so that there is only one master device on the loop at a time. Before the loop card needs to switch to the master device, first determine whether there is voltage on the bus. If there is no voltage, it means that there is no master device working at present, and it can switch to the master device. Before switching the master device, compare the last time the master device worked to ensure that the time interval from the last time it was the master device to the current time it is the master device is greater than 1 second.

[0062] In some embodiments of the present invention, The second loop card is also connected to the first loop card for communication, and is used for sending the second fault information of the detection module and the second fire alarm information of the target area to the first loop card, and receiving the first fault information of the detection module and the first fire alarm information of the target area sent by the first loop card.

[0063] It can be understood that the two alarm fire controllers use RS485, CAN or Ethernet to communicate, and any two of the above communication methods can be used to connect two or more alarm fire controllers to a networked state, so that each alarm fire controller can display the information of other alarm fire controllers. The network communication method also uses hot backup to ensure the reliability of the controller networking. When one of the network communications such as CAN has a problem, the other network communication such as Ethernet can still work normally.

[0064] The two alarm fire controllers work together by using network communication. When the loop card of the first fire controller is ready to inspect and control the loop equipment, the loop card corresponding to the second fire controller is notified to monitor the current loop equipment, and the second fire controller is notified to inspect and control the loop card where the hot backup is located. In this way, at time T1, when the first fire controller uses the first loop card to inspect and control the upper loop equipment, the second loop card of the second fire controller is in the monitoring state. At the same time, when the second fire controller uses the first loop card to inspect and control the lower backup loop equipment at time T1, the second loop card of the first fire controller is also in the monitoring state. At time T2, conversely, the second loop card of the second fire controller inspects and controls the upper loop equipment, and the first loop card is in the monitoring state. At the same time, the second loop card of the first fire controller inspects and controls the lower loop equipment, and the first loop card is in the monitoring state. Repeatedly, the inspection and control are circulated, and the monitoring is switched.

[0065] It can be further understood that the communication mode between the conventional loop card and the loop device is one master and multiple slaves. Now two loop cards need to be connected, so it involves a two-master-multiple-slave mode. For this reason, the algorithm needs to be coordinated so that there is only one master device on the loop at a time. Before the loop card needs to switch to the master device, first determine whether there is voltage on the bus. If there is no voltage, it means that there is no master device working at present, and it can switch to the master device. And before switching the master device, compare when it last worked as the master device to ensure that the time interval from the last time it worked as the master device to the time it works as the master device again is greater than 1 second.

[0066] It can be further understood that in Figure 2The middle loop device 1-1 and loop device 2-1 are hot standby redundant and are installed as close together as possible. Similarly, loop devices 1-n and loop devices 2-n are also redundant. During normal operation, if any device alarms, the corresponding redundant device will also detect the alarm.

[0067] There is another advantage of simultaneously counting the same loop device into the loop cards of two different fire controllers. When the first fire controller detects that a loop device has a fault, the second fire controller will also detect that the device has a fault in the next T2 cycle, and the fault of this loop device can be finally determined.

[0068] When the first fire controller detects a false alarm of a certain circuit device at time T1, the second fire controller will detect it again in the next T2 cycle, and the circuit device at the same fire detection point near another backup circuit will not alarm, so it can be determined that a circuit device has a false alarm.

[0069] Figure 3 A schematic diagram of the prior art of an embodiment of the fire alarm control system provided by the present invention; Understandably, Figure 3 For the existing fire alarm system, two methods are listed: branch line loop card and ring loop card. The first loop card is a connection method that only supports branch line loops. When the line between the second loop device and loop device 3 is broken, the controller can only detect that the first loop device and the second loop device are online, and the fire partitions where loop devices 3~n are located are all offline and unmonitored. Loop card n is a connection method that supports ring loops. When there is a line break between outgoing loop devices 3 and 4, loop card n can detect that loop devices 1~3 are online using the outgoing side of the loop, and loop devices 4~n can be detected online using the incoming side of the loop card. Although monitoring can be performed in the same way, when loop card n fails, the fire partitions where the entire loop devices 1~n are located are all in an unmonitorable state. Or when a certain loop device fails, the fire partition where this specific loop device, such as the smoke sensor, is located is also in an unmonitorable state.

[0070] Figure 4 A flow chart of an embodiment of a fire alarm control method provided by the present invention includes: S401, detecting the target area respectively by using multiple detection modules and generating multiple detection signals; the detection signals include: number information corresponding to the multiple detection modules, output values ​​of the multiple detection modules, location information of the target area and temperature information of the target area; S402, receiving multiple detection signals through the fire control module, obtaining the corresponding working states of the multiple detection modules based on the output values ​​of the multiple detection modules, and obtaining the fault information of the detection modules based on the corresponding number information of the multiple detection modules and the corresponding working states of the multiple detection modules; S403, based on the temperature information of the target area, obtain the temperature anomaly corresponding to the target area, and based on the temperature anomaly corresponding to the target area and the position information of the target area, obtain the fire alarm information of the target area. In some embodiments of the present invention, the output values ​​of the multiple detection modules are used to obtain the corresponding working states of the multiple detection modules, including: The output values ​​of the multiple detection modules are compared with the preset thresholds respectively to obtain the corresponding working states of the multiple detection modules.

[0071] It can be understood that the output values ​​of the multiple detection modules are compared with the preset thresholds respectively to obtain the corresponding working states of the multiple detection modules.

[0072] In some embodiments of the present invention, obtaining the temperature abnormality corresponding to the target area based on the temperature information of the target area includes: The temperature information of the target area is compared with the preset temperature thresholds to obtain the temperature anomaly corresponding to the target area.

[0073] It can be understood that the temperature abnormality corresponding to the target area is obtained by comparing the temperature information of the target area with the preset temperature thresholds.

[0074] The fire alarm control system and method provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A fire alarm control system, characterized in that: include: Multiple detection modules are used to detect the target area respectively and generate multiple detection signals; the detection signals are: the number information corresponding to the multiple detection modules, the output values ​​of the multiple detection modules, the location information of the target area and the temperature information of the target area; The fire control module is respectively connected to the plurality of detection modules for receiving a plurality of detection signals, obtaining the corresponding working states of the plurality of detection modules based on the output values ​​of the plurality of detection modules, and obtaining the fault information of the detection modules based on the corresponding number information of the plurality of detection modules and the corresponding working states of the plurality of detection modules; Based on the temperature information of the target area, the temperature anomaly corresponding to the target area is obtained, and based on the temperature anomaly corresponding to the target area and the position information of the target area, the fire alarm information of the target area is obtained.

2. The fire alarm control system according to claim 1, characterized in that: The fire control module comprises: The first fire controller is respectively connected to the plurality of detection modules for obtaining first fault information of the detection modules based on the number information corresponding to the plurality of detection modules and the working states corresponding to the plurality of detection modules, and obtaining first fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area; The second fire controller is communicatively connected to the multiple detection modules respectively, and is used to obtain second fault information of the detection modules based on the numbering information corresponding to the multiple detection modules and the working status corresponding to the multiple detection modules, and obtain second fire alarm information of the target area based on the temperature abnormality corresponding to the target area and the position information of the target area.

3. The fire alarm control system according to claim 2, characterized in that: The first fire controller is also in communication connection with the second fire controller, and is used to receive the second fault information of the detection module and the second fire alarm information of the target area, and obtain the fault information of the detection module after the first comparison based on the first fault information of the detection module and the second fault information of the detection module; Based on the first fire alarm information of the target area and the first fire alarm information of the target area, obtaining the fire alarm information of the target area after the first comparison; Based on the fault information of the detection module after the first comparison and the fire alarm information of the target area after the first comparison, a fault detection result of the first fire controller is obtained.

4. The fire alarm control system according to claim 3, characterized in that: The second fire controller is further used to receive the first fault information of the detection module and the first fire alarm information of the target area sent by the first fire controller, and obtain the fault information of the detection module after the second comparison based on the first fault information of the detection module and the second fault information of the detection module; obtaining fire alarm information of the target area after a second comparison based on the first fire alarm information of the target area and the first fire alarm information of the target area; Based on the fault information of the detection module after the second comparison and the fire alarm information of the target area after the second comparison, a fault detection result of the second fire controller is obtained.

5. The fire alarm control system according to claim 3, characterized in that: The first fire controller comprises: The first loop card is respectively connected to the plurality of detection modules for communication and is used for reading a plurality of detection signals generated by the plurality of detection modules.

6. The fire alarm control system according to claim 4, characterized in that: The second fire controller comprises: The second loop card is respectively connected to the plurality of detection modules for communication and is used for reading a plurality of detection signals generated by the plurality of detection modules.

7. The fire alarm control system according to claim 6, characterized in that: The second loop card is also connected to the first loop card for communication, and is used for sending the second fault information of the detection module and the second fire alarm information of the target area to the first loop card, and receiving the first fault information of the detection module and the first fire alarm information of the target area sent by the first loop card.

8. A fire alarm control method, characterized in that: include: The target area is detected respectively by multiple detection modules and multiple detection signals are generated; the detection signals are: the number information corresponding to the multiple detection modules, the output values ​​of the multiple detection modules, the location information of the target area and the temperature information of the target area; Receiving multiple detection signals through the fire control module, obtaining the corresponding working states of the multiple detection modules based on the output values ​​of the multiple detection modules, and obtaining the fault information of the detection modules based on the corresponding number information of the multiple detection modules and the corresponding working states of the multiple detection modules; Based on the temperature information of the target area, the temperature anomaly corresponding to the target area is obtained, and based on the temperature anomaly corresponding to the target area and the position information of the target area, the fire alarm information of the target area is obtained.

9. The fire alarm control method according to claim 8, characterized in that: The obtaining of the working states corresponding to the multiple detection modules based on the output values ​​of the multiple detection modules includes: The output values ​​of the multiple detection modules are compared with the preset thresholds respectively to obtain the corresponding working states of the multiple detection modules.

10. The fire alarm control method according to claim 8, characterized in that: The obtaining of the temperature abnormality corresponding to the target area based on the temperature information of the target area includes: The temperature information of the target area is compared with the preset temperature thresholds to obtain the temperature anomaly corresponding to the target area.

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