Multi-stage linkage fire alarm system and control system
By introducing a priority processing mechanism and distributed alarm units into a multi-level linkage fire alarm system, the problem of low reliability of fire alarms is solved, timely response and accurate location of fire alarms are achieved, and the safety and response efficiency of the system are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 深圳市拓海通用电气有限公司
- Filing Date
- 2026-01-27
- Publication Date
- 2026-06-12
Smart Images
Figure CN122200876A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automatic alarm technology, and in particular to a multi-level linkage fire alarm system and control system. Background Technology
[0002] Multi-level linkage fire alarm systems can provide both fault alarms and fire alarms. Fault alarms target abnormal conditions of electrical equipment, while fire alarms detect smoke, temperature, or flame signals within the target area. However, existing multi-level linkage fire alarm systems suffer from low fire alarm reliability, which can easily lead to fires not being detected in the first instance. Summary of the Invention
[0003] The main purpose of this application is to propose a multi-level linkage fire alarm system and control system, which aims to improve the reliability of fire alarms in the multi-level linkage fire alarm system.
[0004] To achieve the above objectives, the multi-level linkage fire alarm system provided in this application includes: Alarm device; Multiple fire detection devices are configured to be distributed at various locations in the target area to detect fire alarm signals at each location. Multiple fault detection modules are configured to detect fault signals of various electrical devices. A control device is connected to the alarm device, multiple fire detection devices, and the fault detection module; the control device is configured to: If a fire alarm signal is received but no fault signal is received, the alarm device is controlled to output a fire alarm signal; if a fault signal is received but no fire alarm signal is received, the alarm device is controlled to output a fault alarm signal; if both a fire alarm signal and a fault signal are received simultaneously, the alarm device is controlled to output the fire alarm signal first.
[0005] In one embodiment, the alarm device includes a display module, and the control device is specifically configured to: Upon receiving a fire alarm signal, the display module is controlled to display fire information; If a fault signal is received but no fire alarm signal is received, the display module is controlled to display fault information.
[0006] In one embodiment, the alarm device includes multiple fire alarm units and multiple fault alarm units. The multiple fire alarm units are configured to be distributed at various locations in the target area, and the multiple fault alarm units are configured to be distributed at various locations in the target area. The multiple fire alarm units are respectively associated with various fire detection devices, and the multiple fault alarm units are respectively associated with various fault detection modules. The control device is specifically configured as follows: If a fire alarm signal is received but no fault signal is received, the associated fire alarm unit will be activated; if a fault signal is received but no fire alarm signal is received, the associated fault alarm unit will be activated; if both a fire alarm signal and a fault signal are received simultaneously, the associated fire alarm unit will be activated.
[0007] In one embodiment, the plurality of fire alarm units and the plurality of fire detection devices are configured based on location association; the control device is specifically configured as follows: Upon receiving a fire alarm signal, the location of the fire is determined based on the address information of the fire alarm signal, and the fire alarm unit associated with that location is controlled to sound an alarm. If a fault signal is received but no fire alarm signal is received, the location of the fault is determined based on the address information of the fault signal, and the fault alarm unit associated with that location is controlled to sound an alarm.
[0008] In one embodiment, the plurality of fire alarm units include a general mobilization fire alarm unit and a plurality of zone fire alarm units. The general mobilization fire alarm unit is located in the public area of the target area, and the plurality of zone fire alarm units are respectively located in each building area of the target area. The plurality of zone fire alarm units are respectively associated with each fire detection device based on location. The control device is specifically configured as follows: Upon receiving a fire alarm signal, the system controls the general mobilization fire alarm unit to sound an alarm, determines the location of the fire based on the address information of the fire alarm signal, and controls the associated zone fire alarm unit to sound an alarm.
[0009] In one embodiment, the mobilization alarm unit triggers the alarm via a time-delay switch; the control device is specifically configured as follows: Upon receiving a fire alarm signal, the system controls the delay switch to start its closing timer so that the delay switch closes after the timer expires, triggering the general mobilization alarm unit to sound an alarm. Additionally, the system determines the location of the fire based on the address information of the fire alarm signal and controls the associated zone fire alarm unit to sound an alarm. If a false alarm confirmation command is received during the closing timing process, the delay switch is controlled to stop the closing timing and remain normally open; When the delay switch is closed and a reset command is received, the delay switch is controlled to return to its normally open state.
[0010] In one embodiment, the multi-level linkage fire alarm system further includes multiple manual fire alarm triggers, which are configured to be distributed at various locations in the target area. The control device is also connected to the multiple manual fire alarm triggers, which are configured to output the fire alarm signal when triggered.
[0011] In one embodiment, the multi-level linkage fire alarm system further includes a reset operation unit, and the control device is also connected to the reset operation unit; The control device is further configured to, upon receiving a reset operation command output by the reset operation unit, control the alarm device to stop outputting a fire alarm signal or a fault alarm signal.
[0012] In one embodiment, the multi-level linkage fire alarm system further includes a self-test module, and the control device is also connected to the self-test module. The self-test module is configured to detect the functional status of any one or more of the alarm device, the plurality of fire detection devices, and the plurality of fault detection modules when it is in operation. The control device is also configured to control the self-test module to operate upon receiving a self-test signal.
[0013] This application also provides a control system, which includes a multi-level linkage fire alarm system as described in any of the above claims.
[0014] As can be seen from the above, the multi-level linkage fire alarm system and control system provided in this application prioritizes the output of the fire alarm signal when the control device receives both the fire alarm signal and the fault signal at the same time. This solves the problem that the fire alarm signal may be masked by the fault signal in the prior art. It has the advantages of ensuring that the fire alarm signal is given priority in conflict scenarios, improving the reliability of the alarm system, and reducing safety hazards. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0016] Figure 1 A schematic diagram of the first embodiment of the multi-level linkage fire alarm system provided in this application; Figure 2A system schematic diagram of a second embodiment of the multi-level linkage fire alarm system provided in this application; Figure 3 A system schematic diagram of the third embodiment of the multi-level linkage fire alarm system provided in this application; Figure 4 A system schematic diagram of the fourth embodiment of the multi-level linkage fire alarm system provided in this application; Figure 5 This is a system schematic diagram of the fifth embodiment of the multi-level linkage fire alarm system provided in this application.
[0017] Explanation of icon numbers: 10. Multi-level linkage fire alarm system; 110. Alarm device; 111. Fault alarm unit; 112. Fire alarm unit; 120. Fire detection device; 130. Fault detection module; 140. Control device; 151. General mobilization fire alarm unit; 152. Zone fire alarm unit; 160. Delay switch; 170. Self-test module.
[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0020] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0021] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0022] In operating environments such as rail transit, large vehicles, large ships, aircraft, and industrial facilities, multi-level linkage fire alarm systems serve as core equipment for ensuring the safety of personnel and property. For example, these systems use fire detection devices to capture real-time signals of fire hazards such as abnormal smoke concentration and sudden increases in ambient temperature; and fault detection modules continuously monitor abnormal equipment status signals such as electrical short circuits, sensor open circuits, or communication interruptions. However, the control devices of these multi-level linkage fire alarm systems generally employ serial processing logic or a single state machine architecture. When a fault signal is triggered first, the alarm device immediately enters a fault alarm state, such as continuously flashing a yellow warning light or emitting an intermittent buzzer. In this state, system resources are completely occupied by the fault handling process. If a fire breaks out in the monitored area, subsequent fire alarm signals are often delayed or even completely ignored because they cannot break through the current logic loop or resource lockout state. Especially in complex operating conditions, such as when a fire risk follows equipment failure during control system operation, the delayed response of the alarm system will directly delay emergency evacuation and firefighting operations, increasing the possibility of casualties and property damage. Therefore, existing multi-level linkage fire alarm systems suffer from low fire alarm reliability, which can easily lead to fires not being detected in the first instance.
[0023] In this regard, such as Figure 1 As shown, this application proposes a multi-level linkage fire alarm system 10, which includes: Alarm device 110; Multiple fire detection devices 120 are configured to be distributed at various locations in the target area to detect fire alarm signals at each location. Multiple fault detection modules 130 are configured to detect fault signals of various electrical devices. Control device 140, which is connected to alarm device 110, multiple fire detection devices 120, and multiple fault detection modules 130 respectively; control device 140 is configured to: If a fire alarm signal is received but no fault signal is received, the alarm device 110 is controlled to output a fire alarm signal; if a fault signal is received but no fire alarm signal is received, the alarm device 110 is controlled to output a fault alarm signal; if both a fire alarm signal and a fault signal are received simultaneously, the alarm device 110 is controlled to output the fire alarm signal first.
[0024] For ease of understanding, the following explains some key terms in this embodiment: The alarm device 110 is not limited in its specific form; it can be a single-function audible and visual alarm, such as a high-decibel buzzer or a flashing warning light, or a comprehensive human-computer interaction terminal integrating voice broadcasting, graphic display, and tactile feedback. In complex scenarios, the alarm device 110 may also include an LCD screen, an LED dot matrix screen, or a wireless communication module for remote notification, capable of displaying the specific location of the fire source or fault codes.
[0025] The fire detection device 120 is configured to continuously monitor physical or chemical parameters in the environment. Specific detection targets include, but are not limited to: the concentration of smoke particles in the air, such as photoelectric or ionization smoke detectors; the abnormal rate of increase in ambient temperature, such as differential or constant temperature detection; the spectral characteristics of flame radiation, such as infrared or ultraviolet flame detection; and the concentration of gases such as carbon monoxide produced by combustion. The fire detection device 120 can be an independent sensor node or a distributed detection module connected to a sensor network. Its output signal is digitally processed and transmitted to the control device 140.
[0026] The fault detection module 130 is designed to monitor the operational status of the multi-level linkage fire alarm system 10 itself or the electrical circuits and equipment it monitors, such as sensor connection status, power supply, and communication links, and to generate a fault signal when an anomaly is detected. This fault detection module 130 can be a circuit monitoring module or a software diagnostic program.
[0027] The control device 140 is designed to receive signals from the fire detection device 120 and the fault detection module 130, process these signals according to preset logic, and then control the output of the alarm device 110. The control device 140 can be a microcontroller, a programmable logic controller (PLC), or an application-specific integrated circuit (ASIC).
[0028] A fire alarm signal indicates a fire detected by the fire detection device 120. A fault signal indicates an abnormal state of the system itself or the monitored equipment detected by the fault detection module 130. A fire alarm signal indicates an alarm issued by the alarm device 110 when a fire is detected. A fault alarm signal indicates an alarm issued by the alarm device 110 when a system fault is detected.
[0029] The target area refers to the specific physical space monitored and protected by the multi-level linkage fire alarm system 10, such as the cockpit of the control system, the cargo hold, or a specific area of an industrial plant.
[0030] The multi-level linkage fire alarm system 10 integrates an alarm device 110, multiple fire detection devices 120, multiple fault detection modules 130, and a control device 140 to achieve effective monitoring and alarm of fire and fault signals.
[0031] Understandably, while the alarm device 110 can simultaneously output both fire and fault alarm information at the hardware level, the lack of a priority preemption mechanism in the control logic can lead to the problem of low-priority signals continuously occupying the alarm channel, thus blocking high-priority signals. Specifically, when a fault signal triggers and drives the alarm device 110 to execute a fault alarm, the control logic often locks into the current state or is monopolized by a single process, preventing subsequent fire alarm signals from cutting off or overriding the current fault output process. This logical flaw can result in critical scenarios where equipment failure causes a fire or both occur simultaneously, preventing the timely issuance of crucial fire alarm signals and potentially leading to a serious fire.
[0032] In an optional embodiment of this application, the multi-level linkage fire alarm system 10 is configured for use in the control system of a large vessel. Multiple fire detection devices 120 include various types of triggering devices such as heat detectors, smoke detectors, composite detectors, high-temperature detectors, explosion-proof smoke detectors, and manual alarm buttons. These fire detection devices 120 are configured to be distributed across different locations on the vessel according to the fire risk characteristics of different areas: for example, heat or smoke detectors are configured in the engine room and auxiliary engine room to monitor for oil fires or high-temperature hazards; corresponding detectors are configured in the vehicle hold to monitor for fires in loaded vehicles; and manual alarm buttons and detectors are configured in densely populated or core control areas such as the bridge and watch room to facilitate rapid triggering when a fire is discovered manually. All detectors monitor the vessel's fire information in real time, and generate a fire alarm signal upon detecting an anomaly. Correspondingly, multiple fault detection modules 130 are configured to monitor the electrical equipment throughout the large vessel. Specifically, the fault detection module 130 continuously monitors the working status of electrical equipment at various locations, and immediately generates a fault signal when a fault is detected in any electrical equipment in the main engine compartment, auxiliary engine compartment, or vehicle main compartment.
[0033] In an optional embodiment of this application, the alarm device 110 is configured to indicate different alarm states through differentiated output of audible and visual signals. For example, the alarm device 110 can indicate a fire alarm state by using a red high-frequency flashing light in conjunction with a continuous, rapid alarm sound, and indicate a fault alarm state by using a yellow constant-on light in conjunction with intermittent alert sounds, thereby achieving dual visual and auditory differentiation. At the communication and control level, the control device 140 establishes communication connections with the alarm device 110, multiple fire detection devices 120, and multiple fault detection modules 130, respectively. This connection method can be flexibly configured according to the application scenario, including wired transmission based on bus protocols such as CAN bus and RS485, as well as wireless interaction based on radio frequency technologies such as LoRa, ZigBee, and Wi-Fi. At the core control logic level, the control device 140 has a built-in signal priority arbitration mechanism, configured to perform graded responses based on the type and combination of received signals: if the control device 140 receives only a fire alarm signal, its control alarm device 110 immediately enters the fire alarm state; if the control device 140 receives only a fault signal, its control alarm device 110 enters the fault alarm state. Specifically, when the fire alarm signal and the fault signal overlap in timing (i.e., received simultaneously, or when one signal is received while the other is received), the control device 140 executes the fire alarm priority arbitration logic. Specifically, if the system is currently in a fault alarm state and subsequently receives a fire alarm signal, the control device 140 will immediately interrupt the current fault alarm output, forcibly preempt and switch to the fire alarm state; conversely, if the system receives a fault signal while in a fire alarm state, the control device 140 will shield or temporarily store the fault signal, maintaining the fire alarm state unchanged. This logic ensures that, under any operating condition, the response channel for fire—the highest level of danger—is always unobstructed and prioritized for triggering.
[0034] Optionally, the fault detection module 130 has flexible physical integration methods and detection strategies: On the one hand, it can be integrated into the control device 140 as a signal polling program or loop monitoring circuit, sending periodic handshake signals to each electrical device through the communication bus and monitoring the electrical characteristics of the loop. When no response signal is received from the device within a preset time or a sudden change in the electrical characteristics of the loop is detected (such as an open circuit or short circuit), it is determined that the corresponding electrical device or connection line has a fault. On the other hand, each of the fault detection modules 130 can also be physically integrated into the circuit boards of each of the fire detection devices 120 or electrical devices in each area, as an embedded self-diagnostic unit. It uses the microprocessor inside the device to directly monitor and actively report the health status of its own hardware in real time. In this case, its detection range specifically covers the key functional indicators of each fire detection device 120 (such as the sensitivity attenuation of the fire detection device 120, the degree of dust accumulation in the photoelectric chamber, the integrity of the sampling circuit or whether the communication transceiver function is normal) and the operating status of each electrical device (such as the voltage stability of the power supply line, the short circuit or open circuit abnormality of the signal bus, and electrical faults such as poor equipment grounding).
[0035] In summary, the multi-level linkage fire alarm system 10 of this application effectively solves the problem that fire alarm information may be masked or delayed by fault information in traditional systems by introducing a priority processing mechanism for fire alarm signals and fault signals in the control device 140. In application scenarios such as control systems or industrial monitoring, this system can ensure that in complex situations where fire and system failure occur simultaneously, the more urgent danger of fire can be prioritized and alarmed in a timely manner, thereby improving the reliability of the system and the efficiency of response to emergencies, and protecting the safety of personnel and property.
[0036] In some embodiments described above, the multi-level linkage fire alarm system 10 can control the alarm device 110 to output corresponding alarm signals based on the received signal type (fire alarm signal or fault signal). However, traditional alarm feedback is often limited to simple audible and visual prompts, such as expressing abnormalities only through the flashing of an alarm bell or indicator light. Simply outputting such general alarm signals may not intuitively and clearly convey the specific event type and related information to operators or users. This may lead to operators being unable to quickly and accurately determine the level of danger when dealing with emergencies, thereby affecting response efficiency and the accuracy of decision-making.
[0037] In one embodiment of this application, the alarm device 110 includes a display module, and the control device 140 is specifically configured to: control the display module to display fire information when a fire alarm signal is received; and control the display module to display fault information when a fault signal is received but no fire alarm signal is received.
[0038] It is understandable that a fire alarm signal can be received simultaneously with a fault signal, or it can be received only as a fire alarm signal.
[0039] The display module is a hardware component used to visually present information, aiming to provide an intuitive human-computer interaction interface. In this embodiment, the display module can be implemented using technologies such as LCD screens, and can be integrated into the panel of the fire alarm control box, the fire alarm repeater in the driver's cab, and the fire alarm repeater in the duty room; alternatively, it can be a standalone display module. When the control device 140 receives a fire alarm signal, it is configured to control the display module to display fire information. Specifically, after receiving signals from heat detectors, smoke detectors, composite detectors, or manual alarm buttons, the control device 140 analyzes the signals. Subsequently, the control device 140 formats the extracted key data and controls the repeaters in the fire alarm display panel, driver's cab, and duty room to synchronously display the specific alarm address of the detector or manual alarm button that triggered the alarm signal, such as the specific location of the main engine room, auxiliary engine room, or vehicle main compartment, as well as the time of the alarm occurrence. In this way, multi-point synchronous display is achieved, ensuring that the crew can obtain consistent fire data immediately, regardless of whether they are on the bridge or in the duty room. Similarly, when the control device 140 receives a fault signal but not a fire alarm signal, it is configured to control the display module to display fault information. In this case, the control device 140 parses the received fault signal, extracts detailed data related to the fault, such as the type of equipment malfunctioning, its specific location, fault code, time of occurrence, and suggested troubleshooting steps. Then, the control device 140 formats this fault data into information that can be visually presented on the display module and sends it to the display module for display via the communication interface.
[0040] It is understood that controlling the output of a fire alarm signal by the alarm device 110 can be achieved by controlling the display module to display fire information, and controlling the output of a fault alarm signal by the alarm device 110 can be achieved by controlling the display module to display fault information. The display module has the function of displaying both fault and fire information. However, when both fire and fault alarm signals are triggered simultaneously, without effective priority management, the limited area of the display screen may be continuously occupied by the fault information that is triggered first, causing the fire alarm to be ignored. Therefore, this control device 140 is configured to implement a fire alarm priority display control strategy. That is, at any moment when a fire alarm signal is detected, regardless of whether fault information is currently being displayed, the display module is forced to prioritize and lock the display of fire information. This ensures that in critical fire situations, the display module can eliminate interference from secondary information and focus on presenting the most threatening fire data, ensuring the timeliness and accuracy of emergency decision-making.
[0041] In one embodiment, such as Figure 2 As shown, the alarm device 110 includes multiple fire alarm units 112 and multiple fault alarm units 111. The multiple fire alarm units 112 are configured to be distributed at various locations in the target area, and the multiple fault alarm units 111 are configured to be distributed at various locations in the target area. The multiple fire alarm units 112 are respectively associated with each fire detection device 120, and the multiple fault alarm units 111 are respectively associated with each fault detection module 130. The control device 140 is specifically configured to: control the associated fire alarm units 112 to alarm when a fire alarm signal is received but a fault signal is not received; control the associated fault alarm units 111 to alarm when a fault signal is received but a fire alarm signal is not received; and control the associated fire alarm units 112 to alarm when both a fire alarm signal and a fault signal are received simultaneously.
[0042] Multiple fire alarm units 112 are configured to be distributed across various locations within the target area, and can be dispersed and installed near different sub-areas, floors, rooms, or specific hazardous points. This distributed configuration aims to ensure that alarms are issued from the nearest location in the event of a fire, improving alarm coverage and timeliness. Similarly, multiple fault alarm units 111 can be positioned near various critical equipment or line nodes to indicate abnormal states of specific electrical lines, sensors, or communication modules on-site. This allows maintenance personnel to quickly and directly pinpoint specific fault nodes and conduct troubleshooting without consulting master drawings, significantly shortening fault location time and improving system maintenance efficiency and recovery speed.
[0043] Multiple fire alarm units 112 are associated with each fire detection device 120, and multiple fault alarm units 111 are associated with each fault detection module 130. Specifically, this can be achieved through signal channel binding at the logical level. That is, when a fire detection device 120 detects a fire alarm signal, the fire alarm unit 112 associated with that fire detection device 120 will be locked and activated by the control device 140, thereby executing the corresponding fire alarm output. Similarly, when a fault detection module 130 detects a fault signal, the fault alarm unit 111 associated with that fault detection module 130 will be triggered to execute the corresponding fault prompt.
[0044] Optionally, the fire alarm unit 112 and the fault alarm unit 111 can be an integrated audible and visual alarm, a separate buzzer with indicator lights, or a display component integrated on a control panel. Specifically, they can be physically combined into one, for example, through different alarm modes of the same audible and visual alarm device; or they can be two physically independent devices. Of course, the fire alarm unit 112 is significantly different from the fault alarm unit 111 in terms of alarm characteristics. To prevent confusion, the fire alarm unit 112 can be configured to output a red strobe signal in conjunction with a continuous or rapid fire alarm sound signal to convey the highest level of urgency; while the fault alarm unit 111 can be configured to output a constant yellow light signal in conjunction with intermittent fault sound signals.
[0045] Based on this, when only a fire alarm signal is received, the control device 140 will activate the fire alarm unit 112 associated with the area where the fire alarm signal originates and issue a fire alarm. When only a fault signal is received, the control device 140 will activate the fault alarm unit 111 associated with the source of the fault signal and issue a fault alarm. When both a fire alarm signal and a fault signal are received simultaneously, the control device 140 will prioritize controlling the associated fire alarm unit 112 to sound an alarm. This reflects the highest priority handling of fire hazards, ensuring that fire alarms can be issued in a timely manner in complex situations and avoiding delays in fire response due to interference from fault information.
[0046] In one embodiment, such as Figure 2 As shown, multiple fire alarm units 112 and multiple fire detection devices 120 are configured based on location association, and multiple fault alarm units 111 and multiple fault detection modules 130 are configured based on location association. The control device 140 is specifically configured to: upon receiving a fire alarm signal, determine the location of the fire based on the address information of the fire alarm signal, and control the fire alarm units 112 associated with that location to sound an alarm; upon receiving a fault signal but not a fire alarm signal, determine the location of the fault based on the address information of the fault signal, and control the fault alarm units 111 associated with that location to sound an alarm.
[0047] The target area is divided into several independent monitoring sub-areas or logical address units, such as the main engine compartment, auxiliary engine compartment, vehicle main compartment, and driver's cab. Multiple fire detection devices 120 are distributed in each monitoring sub-area, and multiple fault detection modules 130 are distributed within each electrical device. It is understood that multiple fire alarm units 112 are associated with multiple fire detection devices 120 based on their location, and multiple fault alarm units 111 are associated with multiple fault detection modules 130 based on their location. Specifically, during system deployment, each fire alarm unit 112 and fault alarm unit 111 is assigned to a specific physical location within the target area, establishing a clear locational correspondence with the fire detection devices 120 and fault detection modules 130 within that location. This association can be achieved through preset address coding, area division, or physical wiring methods, ensuring that the signal from each detection device can be traced back to its specific installation location.
[0048] In one feasible implementation, the control device 140 executes the addressing-location-directional alarm control logic. When the control device 140 receives a fire alarm signal, it first parses the address information carried in the signal and quickly locates the specific physical location of the fire by consulting a preset mapping relationship. Subsequently, the control device 140 controls the fire alarm unit 112 associated with that specific location to sound an alarm. This ensures that the fire alarm signal has clear spatial directionality, guiding rescue personnel directly to the fire point rather than blindly searching. Furthermore, regarding fault control logic, if a fault signal is received but no fire alarm signal is received, the control device 140 determines the specific location of the fault based on the address information of the fault signal. Subsequently, the control device 140 activates the fault alarm unit 111 associated with that location. This allows maintenance personnel to directly go to the identified fault point for repair, avoiding the tedious process of troubleshooting wiring over a large area and improving system maintenance efficiency.
[0049] In one feasible implementation, when the control device 140 receives a fire alarm signal from a fire detection device 120, the fire alarm signal typically carries unique address information or a zone identifier. The control device 140 internally stores a mapping relationship between the address information and actual physical location of each fire detection device 120, such as floor, room number, and zone number. The control device 140 parses the address information in the fire alarm signal and determines the specific location of the fire by querying a preset mapping table or database. Once the fire location is determined, the control device 140 activates the fire alarm unit 112 directly corresponding to that fire location according to a preset location association relationship, causing it to sound an alarm. For example, if the fire alarm signal comes from the fire detection device 120 in room A on the third floor, the control device 140 will determine the fire location to be room A on the third floor and only activate the fire alarm unit 112 in room A or adjacent to that room. Similarly, when the control device 140 receives a fault signal from a fault detection module 130, this signal also contains address information or a zone identifier. The control device 140 parses the address information in the fault signal and determines the specific location of the fault according to a preset mapping relationship. For example, the fault detection module 130 of a certain area may detect faults such as short circuits, sensor failures, or power abnormalities, and send a fault signal containing the address information of that area to the control device 140. If the control device 140 confirms that there is no fire alarm signal, it determines the location of the fault based on the address information and activates the fault alarm unit 111 directly corresponding to that location, causing it to issue an alarm. It is worth noting that when the control device 140 receives both a fire alarm signal and a fault signal simultaneously, it is configured to execute an arbitration strategy prioritizing fire alarm location. Specifically, the control device 140 will prioritize parsing the address information in the fire alarm signal to pinpoint the specific area where the fire occurred and forcibly activate the fire alarm unit 112 associated with that fire area to output a fire alarm signal. During this period, for concurrent fault signals, the control device 140 will take measures such as shielding, temporarily storing, or recording in the background. That is, it will temporarily not activate the fault alarm unit 111 corresponding to the fault location, or only display it on the control room screen without issuing on-site audible and visual prompts. In this way, in critical moments when multiple signals occur simultaneously, it can ensure that the fire alarm signal is effectively transmitted, and will not cause on-site chaos due to the simultaneous alarm of fault alarm unit 111 and fire alarm unit 112, thus improving the reliability of the fire alarm.
[0050] like Figure 2The diagram illustrates the distributed architecture and connectivity of a multi-level linkage fire alarm system within a target area, specifically comprising two independent monitoring sub-areas: Location A and Location B. Each location is equipped with a fire detection device 120 (distinguished as Fire Detection Device A and B) and a fault detection module 130 (distinguished as Fault Detection Module A and B), responsible for transmitting the collected fire alarm and fault signals to the control device 140 in real time. Simultaneously, each location is also equipped with a fire alarm unit 112 (e.g., fire alarm units A and B) and a fault alarm unit 111 (e.g., fault alarm units A and B). The control device 140 establishes communication connections with all the aforementioned detection devices and alarm units, forming a closed-loop control network. Thus, the control device can receive fire alarm or fault signals from a specific location (e.g., Location A) and directionally control the corresponding fire alarm unit 112 (i.e., fire alarm unit A) or fault alarm unit 111 (i.e., fault alarm unit A) to perform actions, achieving spatial correspondence and precise linkage from signal input to alarm output.
[0051] In one embodiment, such as Figure 3 As shown, the multiple fire alarm units 112 include a general mobilization fire alarm unit 151 and multiple zone fire alarm units 152. The general mobilization fire alarm unit 151 is located in the public area of the target area, and the multiple zone fire alarm units 152 are respectively located in each building area of the target area. The multiple zone fire alarm units 152 are respectively associated with each fire detection device 120 based on their location. The control device 140 is specifically configured to: when receiving a fire alarm signal, control the general mobilization fire alarm unit 151 to sound an alarm, determine the location of the fire based on the address information of the fire alarm signal, and control the zone fire alarm units 112 associated with that location to sound an alarm.
[0052] The general mobilization fire alarm unit 151 is a device used to issue a general fire alarm throughout the entire target area. Its main function is to quickly issue a unified and mandatory fire warning to all personnel within the target area upon detecting a fire alarm signal, prompting them to immediately pay attention to the fire and take appropriate emergency measures, such as evacuation. The general mobilization fire alarm unit 151 is typically installed in public areas of the target area, such as lobbies, corridors, entrances, and other locations with high personnel flow or concentrated information dissemination, to ensure that its alarm information can be widely received. The general mobilization fire alarm unit 151 can be implemented in various forms, such as high-decibel audible and visual alarms, broadcast systems, or emergency voice prompt systems integrated with building automation systems, designed to provide a non-discriminatory and wide-coverage alarm.
[0053] Zone fire alarm units 152 are fire alarm devices 110 installed for specific local areas (e.g., individual building blocks) within a target area. These units are configured based on location association with individual fire detection devices 120, meaning that each zone fire alarm unit 152 is responsible for fire alerts in its own building block or adjacent areas. Its main function is to provide specific location information of the fire, assisting personnel in quickly locating the fire source and guiding personnel within the local area to evacuate or take initial fire-fighting measures. Zone fire alarm units 152 may include audible and visual alarms, indicator lights, or displays with area markings, and their alarm range is typically limited to specific building blocks or floors to accurately indicate the fire area.
[0054] Optionally, upon receiving a fire alarm signal, the control device 140 is configured to simultaneously activate the general mobilization fire alarm unit 151 and the zone fire alarm unit 152. Specifically, upon receiving a fire alarm signal from any fire detection device 120, the control device 140 immediately triggers the general mobilization fire alarm unit 151 located in the public area to issue a zone-wide alarm, ensuring that all personnel are promptly informed of the fire. Simultaneously, the control device 140 analyzes the address information contained in the fire alarm signal to accurately determine the specific location of the fire and further controls the zone fire alarm unit 112 associated with that location to sound an alarm. This dual alarm mechanism ensures both global alerts and precise local guidance.
[0055] In some embodiments described above, the multi-level linkage fire alarm system 10 can trigger the general mobilization fire alarm unit 151 and the zone fire alarm unit 152 to issue alarms based on fire alarm signals. However, in practical applications, the fire detection device 120 may generate false alarm signals due to environmental interference, instantaneous fluctuations, or accidental triggering. If the general mobilization fire alarm unit 151 triggers an alarm immediately upon receiving such a signal, it may lead to unnecessary panic, personnel evacuation, and resource waste, reducing the reliability of the system and user trust.
[0056] Therefore, in one embodiment of this application, as Figure 4 As shown, the general mobilization alarm unit triggers the alarm via a time delay switch 160. The control device 140 is specifically configured to: upon receiving a fire alarm signal, control the time delay switch 160 to start a closing timer so that the time delay switch 160 closes after the timer expires, triggering the general mobilization alarm unit to sound an alarm; determine the location of the fire based on the address information of the fire alarm signal, and control the associated zone fire alarm unit 112 to sound an alarm; if a false alarm confirmation command is received during the closing timer, control the time delay switch 160 to stop the closing timer and remain normally open; if the time delay switch 160 is closed and a reset command is received, control the time delay switch 160 to return to its normally open state.
[0057] The time-delay switch 160 is a switch with a time delay function. Upon receiving a trigger signal, it does not immediately change its state but waits for a preset time period to complete before performing its operation, thus providing a buffer time for further confirmation of the fire alarm signal. Specifically, upon receiving a fire alarm signal, the control device 140 controls the time-delay switch 160 to start its closing timer. This means that the timer inside the time-delay switch 160 begins working, for example, counting down or counting forward, until the preset delay time is reached. When the timer finishes, the time-delay switch 160 closes, thereby triggering the general mobilization alarm unit to issue an alarm signal. Simultaneously, the control device 140 still determines the location of the fire based on the address information of the fire alarm signal and controls the associated zone fire alarm unit 112 to sound an alarm.
[0058] To further improve the system's fault tolerance, during the closing timing process, if the control device 140 receives a false alarm confirmation command, such as a cancellation signal from manual operation or a secondary confirmation signal from within the system, the control device 140 will immediately control the delay switch 160 to stop the closing timing and maintain it in the normally open state. This effectively avoids triggering the general mobilization alarm due to false alarms. Furthermore, even if the delay switch 160 is closed and the general mobilization alarm unit has already started alarming, upon receiving a reset command, the control device 140 will also control the delay switch 160 to return to the normally open state, thereby deactivating the general mobilization alarm. The reset command can be issued manually, for example, after confirming that the fire has been extinguished or the false alarm has been handled.
[0059] Through the above technical solution, when the fire detection device 120 is triggered, the system first controls the zone fire alarm unit 152 associated with the fire source location to act immediately. This design not only sends a directional warning to the personnel closest to the fire source at the first moment, ensuring they quickly detect the anomaly, but also uses the timing cycle of the delay switch 160 to provide a buffer confirmation time for the overall system mobilization alarm. During this buffer period, on-duty personnel can go to the scene according to the guidance of the zone alarm or confirm the fire through monitoring: if it is confirmed to be a sensor false alarm or a non-emergency situation, the operator can promptly trigger the false alarm confirmation command, forcing the delay switch 160 to stop timing and remain open, thereby intercepting the erroneous overall alarm process at the source and avoiding panic and resource waste caused by local false alarms throughout the ship / factory; conversely, if no false alarm confirmation command is received after the timing ends, or if the fire is confirmed to be real, the delay switch 160 will complete the timing closing action normally, thereby connecting and triggering the overall mobilization alarm unit. In this way, the anti-interference capability, intelligence level, and accurate management capability of the alarm system in complex environments are improved.
[0060] In one embodiment, the multi-level linkage fire alarm system 10 further includes multiple manual fire alarm triggers and multiple manual fault triggers. The multiple manual fire alarm triggers are configured to be distributed at various locations in the target area, and the multiple manual fault triggers are configured to be distributed at various locations in the target area. The control device 140 is also connected to the multiple manual fire alarm triggers and the multiple manual fault triggers respectively. The manual fire alarm triggers are configured to output the fire alarm signal when triggered, and the manual fault triggers are configured to output the fault signal when triggered.
[0061] The manual fire alarm trigger, serving as a redundant supplement to automatic detection, is configured to allow manual intervention to issue a fire alarm signal. Physically, the trigger can be a glass-break switch, a resettable push-button, or a lever structure with a protective cover, and is typically marked in red to comply with safety regulations. It is deployed in conspicuous and easily accessible locations such as evacuation routes, stairwell exits, driver's cabs, and rooms containing critical equipment. In terms of circuit implementation, the manual fire alarm trigger integrates a switching circuit or address encoding module. Once triggered by mechanical action, it closes contacts or sends a specific digital message. This signal has a unique device ID and is identified by the control device 140 as a high-priority fire alarm event. Similarly, the multiple manual fault triggers are devices that allow manual issuance of equipment fault signals. Their implementation is similar to the manual fire alarm trigger; they can be buttons, switches, or panels, typically installed in the equipment operating area or in locations easily accessible to maintenance personnel. When personnel discover equipment abnormalities, malfunctions, or require maintenance, they can send a fault signal to the control device 140 by operating the trigger.
[0062] The multiple manual fire alarm triggers and multiple manual fault triggers are configured to be distributed throughout the target area, ensuring that personnel can easily and quickly locate and operate the manual triggers from any location within the target area, thereby enabling timely response to fires or faults. Their installation density and location will be rationally planned according to building codes, safety standards, and actual needs, such as being installed in evacuation routes on each floor, fire compartment entrances and exits, important equipment rooms, and densely populated areas.
[0063] The control device 140 is connected to multiple manual fire alarm triggers and multiple manual fault triggers, thereby establishing a communication link between the manual triggers and the control device 140, enabling the control device 140 to receive and process the signals emitted by the manual triggers. This connection can be implemented via wired means (such as bus system, multi-wire system) or wireless means (such as Wi-Fi, Zigbee, LoRa, etc.).
[0064] When the manual fire alarm trigger is activated, its internal circuitry generates a specific level change, pulse signal, or data packet. This signal is designed to have the same format as the fire alarm signal output by the fire detection device 120 or to be recognized as a fire alarm event by the control device 140, thereby outputting the fire alarm signal. Similarly, when the manual fault trigger is activated, its internal circuitry generates a specific signal. This signal is designed to have the same format as the fault signal output by the fault detection module 130 or to be recognized as a fault event by the control device 140, thereby outputting the fault signal.
[0065] Optionally, each of the manual fire alarm triggers is configured with a unique location identifier (such as an address code or area ID) and is associated with the fire alarm unit 112 at the corresponding location. When the manual fire alarm trigger is triggered, the control device 140 locates the source of the fire alarm based on the location identifier and controls the associated fire alarm unit 112 (e.g., an audible and visual alarm in the area) to sound an alarm. Similarly, each of the manual fault triggers is also configured with a unique location identifier and is associated with the fault alarm unit 111 at the corresponding location. When the manual fault trigger is triggered, the control device 140 controls the associated fault alarm unit 111 to sound an alarm based on the location identifier, thus visually indicating the specific area where there is a potential fault or equipment requires maintenance, facilitating quick location by maintenance personnel.
[0066] Through the above technical solution, the multi-level linkage fire alarm system 10 of this application no longer relies solely on the fire detection device 120 and the fault detection module 130 for automatic detection. When personnel discover a fire or equipment malfunction, they can immediately issue a fire alarm signal or a fault signal via a manual fire alarm trigger or a manual fault trigger. After these manually triggered signals are received by the control device 140, they will be processed according to the predetermined alarm logic. For example, if a fire alarm signal is received but a fault signal is not received, the alarm device 110 is controlled to output a fire alarm signal; if a fault signal is received but a fire alarm signal is not received, the alarm device 110 is controlled to output a fault alarm signal; if both a fire alarm signal and a fault signal are received simultaneously, the alarm device 110 is controlled to prioritize outputting the fire alarm signal.
[0067] In one embodiment, the multi-level linkage fire alarm system 10 further includes a reset operation unit, and the control device 140 is also connected to the reset operation unit; the control device 140 is further configured to: after receiving a reset operation command output by the reset operation unit, control the alarm device 110 to stop outputting fire alarm signals or fault alarm signals.
[0068] In one feasible implementation, the reset operation unit can be a physical button, such as one located on the operation panel of the control device 140, for the operator to manually press to trigger the reset operation; it can also be a virtual button on a touch screen interface, issuing a reset command through touch operation; or it can be a receiving module for reset signals sent by a remote control device. Regardless of the form, the reset operation unit generates a specific reset operation command and sends it to the control device 140. The connection between the control device 140 and the reset operation unit can be a physical wired connection, such as through a signal line or data bus, to ensure reliable command transmission; or it can be a wireless connection, such as through a wireless communication module. When the control device 140 receives the reset operation command issued by the reset operation unit, its internal logic responds immediately and sends a corresponding control command to the alarm device 110. These control commands are intended to cause the alarm device 110 to stop the currently outputting fire alarm signal or fault alarm signal. For example, if alarm device 110 is emitting an audible and visual alarm, control device 140 will instruct it to stop the buzzer and turn off the warning lights; if alarm device 110 includes a display module, control device 140 will clear the fire or fault information on the display screen, restoring it to standby or normal display state. By introducing a reset operation unit and enabling control device 140 to respond to its output reset operation command, the multi-level linkage fire alarm system 10 can promptly stop the signal output of alarm device 110 after the fire or fault has been effectively handled, or in the event of a confirmed false alarm. This avoids continuous interference with the alarm signal, improving system manageability and user experience. Simultaneously, this mechanism ensures that the system can quickly return to normal monitoring status, preparing for the next potential fire or fault detection, thereby enhancing the practicality and reliability of the entire alarm system.
[0069] In one embodiment, such as Figure 5 As shown, the multi-level linkage fire alarm system 10 also includes a self-test module 170, and the control device 140 is also connected to the self-test module 170. The self-test module 170 is configured to detect the functional status of any one or more of the alarm device 110, the multiple fire detection devices 120, and the multiple fault detection modules 130 when it is in operation. The control device 140 is also configured to control the self-test module 170 to work when it receives a self-test signal.
[0070] The self-test module 170 can be a standalone hardware circuit board integrating sensors, a microcontroller, and a communication interface to perform detection tasks; alternatively, it can be a piece of software code integrated within the control device 140, evaluating the status of other components by sending test commands and receiving feedback. The core function of the self-test module 170 is to simulate or detect the normal operating conditions of the tested component and determine whether its response meets expectations, thereby ensuring the reliability of the core components of the alarm system. The connection between the control device 140 and the self-test module 170 can be achieved through various communication methods, such as wired connections, simple general-purpose input / output, or wireless connections.
[0071] When in operation, the self-test module 170 is configured to diagnose the functional status of the alarm device 110, the multiple fire detection devices 120, and the multiple fault detection modules 130. Specifically, for the alarm device 110, the self-test module 170 performs a light and screen check process: sequentially illuminating all indicator lights on the panel to check the integrity of the light-emitting diodes, simultaneously activating the pixel or logic self-test program of the LCD screen, and driving the buzzer to emit a test alarm sound. For the fire detection devices 120, the self-test module 170 sends inspection commands or simulated fire alarm electronic signals through the communication loop, such as instructing the sensors to execute self-diagnostic algorithms, simulating the response of smoke or heat sensors under fire thresholds, and checking whether they can correctly feed back fire alarm signals. For the fault detection modules 130, the self-test module 170 verifies the system's fault identification logic by monitoring subtle changes in voltage / current or sending heartbeat packets to simulate fault conditions such as open circuits or communication loss.
[0072] Of course, the self-test module 170 can also test other devices and apparatuses, not only the alarm device 110, the multiple fire detection devices 120 and the multiple fault detection modules 130, but the specifics are not limited here.
[0073] Upon receiving a self-test signal, the control device 140 controls the self-test module 170 to operate. The self-test signal can originate from various sources; for example, it can be manually triggered by the user through a reset operation unit or a dedicated self-test button; it can also be a pre-set timed task within the control device 140, such as performing a comprehensive self-test every morning; or it can be an automatic power-on self-test executed when the system starts. When the control device 140 receives the self-test signal, it sends a specific instruction code or electrical signal through its connection with the self-test module 170 to activate the self-test module 170's detection program, thereby initiating the system's health check.
[0074] By introducing a self-test module 170, which is controlled by the control device 140 upon receiving a self-test signal, the system can actively detect the functional status of the alarm device 110, multiple fire detection devices 120, and multiple fault detection modules 130. This enables the system to promptly detect and report potential component failures or performance anomalies, thereby avoiding the risk of the alarm system failing to operate normally due to the failure of critical components in emergency situations.
[0075] This application also provides a control system, which includes a multi-level linkage fire alarm system 10.
[0076] It should be noted that since this control system includes a multi-level linkage fire alarm system 10, and the multi-level linkage fire alarm system 10 adopts all the technical solutions of all the above embodiments, this control system has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0077] Optionally, the control system can be a control system for large ships, a control system for trains, a control system for large trucks, a control system for aircraft, etc., without any specific limitation here.
[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no technical conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A multi-level linkage fire alarm system, characterized in that, The multi-level linkage fire alarm system includes: Alarm device; Multiple fire detection devices are configured to be distributed at various locations in the target area to detect fire alarm signals at each location. Multiple fault detection modules are configured to detect fault signals of various electrical devices. A control device is connected to the alarm device, multiple fire detection devices, and multiple fault detection modules; the control device is configured to: If a fire alarm signal is received but no fault signal is received, the alarm device is controlled to output a fire alarm signal; if a fault signal is received but no fire alarm signal is received, the alarm device is controlled to output a fault alarm signal; if both a fire alarm signal and a fault signal are received simultaneously, the alarm device is controlled to output the fire alarm signal first.
2. The multi-level linkage fire alarm system as described in claim 1, characterized in that, The alarm device includes a display module, and the control device is specifically configured as follows: Upon receiving a fire alarm signal, the display module is controlled to display fire information; If a fault signal is received but no fire alarm signal is received, the display module is controlled to display fault information.
3. The multi-level linkage fire alarm system as described in claim 1, characterized in that, The alarm device includes multiple fire alarm units and multiple fault alarm units. The multiple fire alarm units are configured to be distributed at various locations in the target area, and the multiple fault alarm units are configured to be distributed at various locations in the target area. The multiple fire alarm units are respectively associated with various fire detection devices, and the multiple fault alarm units are respectively associated with various fault detection modules. The control device is specifically configured as follows: If a fire alarm signal is received but no fault signal is received, the associated fire alarm unit will be activated; if a fault signal is received but no fire alarm signal is received, the associated fault alarm unit will be activated; if both a fire alarm signal and a fault signal are received simultaneously, the associated fire alarm unit will be activated.
4. The multi-level linkage fire alarm system as described in claim 3, characterized in that, Multiple fire alarm units and multiple fire detection devices are configured based on location association; the control device is specifically configured as follows: Upon receiving a fire alarm signal, the location of the fire is determined based on the address information of the fire alarm signal, and the fire alarm unit associated with that location is controlled to sound an alarm. If a fault signal is received but no fire alarm signal is received, the location of the fault is determined based on the address information of the fault signal, and the fault alarm unit associated with that location is controlled to sound an alarm.
5. The multi-level linkage fire alarm system as described in claim 4, characterized in that, The multiple fire alarm units include a general mobilization fire alarm unit and multiple zone fire alarm units. The general mobilization fire alarm unit is located in the public area of the target area, and the multiple zone fire alarm units are respectively located in various residential areas of the target area. The multiple zone fire alarm units are respectively associated with various fire detection devices based on their locations. The control device is specifically configured as follows: Upon receiving a fire alarm signal, the system controls the general mobilization fire alarm unit to sound an alarm, determines the location of the fire based on the address information of the fire alarm signal, and controls the associated zone fire alarm unit to sound an alarm.
6. The multi-level linkage fire alarm system as described in claim 5, characterized in that, The mobilization alarm unit triggers an alarm via a time delay switch; the control device is specifically configured as follows: Upon receiving a fire alarm signal, the system controls the delay switch to start its closing timer so that the delay switch closes after the timer expires, triggering the general mobilization alarm unit to sound an alarm. Additionally, the system determines the location of the fire based on the address information of the fire alarm signal and controls the associated zone fire alarm unit to sound an alarm. If a false alarm confirmation command is received during the closing timing process, the delay switch is controlled to stop the closing timing and remain normally open; When the delay switch is closed and a reset command is received, the delay switch is controlled to return to its normally open state.
7. The multi-level linkage fire alarm system as described in any one of claims 1 to 6, characterized in that, The multi-level linkage fire alarm system also includes multiple manual fire alarm triggers, which are configured to be distributed in various locations within the target area. The control device is also connected to the multiple manual fire alarm triggers, which are configured to output the fire alarm signal when triggered.
8. The multi-level linkage fire alarm system as described in any one of claims 1 to 6, characterized in that, The multi-level linkage fire alarm system also includes a reset operation unit, and the control device is also connected to the reset operation unit. The control device is further configured to, upon receiving a reset operation command output by the reset operation unit, control the alarm device to stop outputting a fire alarm signal or a fault alarm signal.
9. The multi-level linkage fire alarm system as described in any one of claims 1 to 6, characterized in that, The multi-level linkage fire alarm system also includes a self-testing module. The control device is also connected to the self-testing module. The self-testing module is configured to detect the functional status of any one or more of the alarm device, the multiple fire detection devices, and the multiple fault detection modules when it is in operation. The control device is also configured to control the self-test module to operate upon receiving a self-test signal.
10. A control system, characterized in that, The control system includes a multi-level linkage fire alarm system as described in any one of claims 1 to 9.