Fixed fire extinguishing system, method and terminal based on closed cabin

Abstract

The invention provides a fixed fire extinguishing system and method based on a closed cabin and a terminal. A fire behavior detection module sends out an automatic alarm signal or an active alarm module manually triggers an active alarm signal; a fire judgment module determines the closed state of the cabin door when judging that a fire occurs, and generates a linkage fire control signal; linkage fire extinguishing operation is executed on the closed cabin through the fire extinguishing control module; and after-combustion fire extinguishing operation is executed when the after-combustion fire extinguishing signal is triggered. The problems that in the prior art, a fixed fire extinguishing system of a closed cabin is insufficient in fire false alarm and fire re-combustion coping capacity are solved. The technical problem that a single detector is prone to triggering fire false alarm is solved through the logic design that the multiple detectors trigger alarm signals at the same time and determine the closed state of the cabin door, and the safety of the closed cabin is protected by positively responding to reburning fire through the linkage air-oil system and reburning monitoring.

Description

Technical Field

[0001] The present invention relates to the field of cabin fire extinguishing, and in particular to a fixed fire extinguishing system, method and terminal based on a closed cabin. Background Art

[0002] With the advancement of my country's marine technology, the safe operation of enclosed compartments, such as battery compartments and data center equipment rooms, as critical facilities, has become a focus of attention. These compartments are relatively enclosed and complex, often housing large quantities of flammable and explosive materials or densely packed precision equipment and cables. Once a fire occurs, it can spread rapidly within the enclosed space, potentially causing significant damage to equipment and property. Uncontrolled fires can also lead to secondary disasters such as explosions, seriously threatening personnel safety and even potentially fatally impacting core functions such as ship navigation and data center operations.

[0003] However, existing fixed fire-extinguishing systems for such enclosed cabins still suffer from significant technical deficiencies, making them unable to meet practical safety requirements. First, fire assessment reliability is insufficient, resulting in frequent false alarms and missed alarms. Traditional systems generally rely on a single type of sensor for fire monitoring. Temperature sensors are sensitive to localized high temperatures, but their response is delayed when the temperature gradient is small in the early stages of a fire, easily missing the optimal opportunity for firefighting. Smoke sensors can capture combustion aerosols early, but are prone to triggering false alarms due to interference from dust accumulation, oil mist, or water vapor generated by equipment operation, common in enclosed cabins. This single-sensor mechanism results in the system either initiating unnecessary firefighting actions due to false alarms or delaying firefighting due to missed alarms, furthering the severity of the fire. Second, firefighting strategies lack adaptability, making it difficult to prevent fire resurgences. Existing systems often use a fixed "single trigger, full-strength" firefighting activation logic. These simple triggering criteria make it difficult to dynamically adjust according to the fire's development stage. In the early stages of a fire, releasing an excessive amount of extinguishing agent at once not only wastes resources but may also cause secondary damage to intact equipment within the compartment. Furthermore, if the fire is not fully extinguished or hidden hotspots exist, the lack of a secondary release mechanism allows residual fire to easily reignite and spread rapidly, creating a vicious cycle of fire extinguishing and reigniting. Third, insufficient system coordination makes it difficult to achieve precise, zoned control. Enclosed compartments often have air circulation or structural connections with adjacent areas, such as the plumbing connection between a ship's battery compartment and the engine room. However, traditional fire-extinguishing systems lack zoning protection, making it impossible to implement differentiated control measures tailored to the fire characteristics of different compartments or areas. Furthermore, they lack linkage mechanisms with associated equipment such as ventilation systems and isolation valves. This means that when a fire breaks out, ventilation and oxygen supply cannot be promptly shut off or fire compartments cannot be sealed, leading to the loss of extinguishing agent or the spread of the fire to adjacent areas. Failure to disconnect the air and oil circuits or prematurely opening ventilation can lead to an influx of oxygen, causing reignition and further exacerbating the fire. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a fixed fire extinguishing system, method and terminal based on a closed cabin, which is used to solve the problem that the fixed fire extinguishing system in the closed cabin in the prior art is insufficient in responding to false fire alarms and re-ignition of fire.

[0005] To achieve the above-mentioned objectives and other related objectives, the first aspect of the present invention provides a fixed fire extinguishing system, method and terminal based on a closed cabin, the system comprising: a fire detection module, an active alarm module, a fire judgment module and a fire extinguishing control module; wherein the fire detection module is used to monitor the environmental parameters in the closed cabin in real time, and to send out a corresponding automatic alarm signal when the monitored environmental parameters meet the fire alarm conditions; the active alarm module is used for the user to manually send out an active alarm signal; the fire judgment module is connected to the fire detection module and the active alarm module, and is used to determine whether a fire occurs in the closed cabin based on the received automatic alarm signal and / or active alarm signal, and to generate a linkage fire control signal when it is determined that a fire occurs and the cabin door is in a closed state; the fire extinguishing control module is connected to the fire judgment module, and is used to perform a linkage fire extinguishing operation on the closed cabin according to the linkage fire control signal, and to perform a re-ignition fire extinguishing operation according to the automatic alarm signal sent by the fire detection module during the fire extinguishing process.

[0006] In some embodiments of the first aspect of the present invention, the fire detection module includes: a temperature detector and a smoke detector; wherein the temperature detector is used to monitor the temperature data in the closed cabin in real time, and to issue an automatic temperature alarm signal when the temperature data meets the temperature abnormality condition; the smoke detector is used to monitor the smoke particle data in the closed cabin in real time, and to issue an automatic smoke alarm signal when the smoke particle data meets the smoke abnormality condition.

[0007] In some embodiments of the first aspect of the present invention, the active alarm module includes: a manual alarm button in the cockpit for the user to manually trigger the active alarm signal based on experience.

[0008] In some embodiments of the first aspect of the present invention, the fire judgment module is used to determine that a fire has occurred in the closed cabin when it receives both a temperature-sensing automatic alarm signal and a smoke-sensing automatic alarm signal; or to determine that a fire has occurred in the closed cabin when it receives an active alarm signal.

[0009] In some embodiments of the first aspect of the present invention, the linkage fire control signal includes an air and oil remote cut-off signal, a delay signal, and a valve control signal to control the cutting off of ventilation in the closed cabin, the cutting off of fuel supply, and the release of fire extinguishing agent.

[0010] In some embodiments of the first aspect of the present invention, the execution of the linkage fire extinguishing operation in the closed cabin according to the linkage fire control signal includes: executing a first-level fire extinguishing operation; wherein, the first-level fire extinguishing operation includes: cutting off the ventilation system and the fuel supply system according to the air and oil remote cut-off signal; after the first-level fire extinguishing operation is completed, executing a second-level fire extinguishing operation; wherein, the second-level fire extinguishing operation includes: establishing a delay window period of the bottle head valve according to the delay signal, and driving the bottle head valve to release the fire extinguishing agent of the first gas cylinder according to the valve control signal at the end of the delay window period.

[0011] In some embodiments of the first aspect of the present invention, the automatic alarm signal issued by the fire detection module includes: issuing a re-ignition fire extinguishing signal when the temperature detector of the fire detection module monitors that the temperature data meets the temperature re-ignition condition within a preset time after the end of the secondary fire extinguishing operation; issuing a re-ignition fire extinguishing signal when the smoke detector of the fire detection module monitors that the smoke particle data meets the smoke re-ignition condition within a preset time after the end of the secondary fire extinguishing operation.

[0012] In some embodiments of the first aspect of the present invention, the re-ignition fire extinguishing operation includes: driving the cylinder head valve to release the fire extinguishing agent from the second gas cylinder according to the re-ignition fire extinguishing signal, and extending the release and soaking time of the fire extinguishing agent until the fire is extinguished.

[0013] To achieve the above-mentioned and other related objectives, the second aspect of the present invention provides a fixed fire extinguishing method for a closed cabin. The method comprises: issuing an automatic alarm signal or manually triggering an active alarm signal when environmental parameters meet fire alarm conditions; determining whether a fire has occurred based on the alarm signal, and if a fire has occurred, determining the cabin door's closed state and generating a coordinated fire control signal; executing a coordinated fire extinguishing operation in the closed cabin based on the coordinated fire control signal; and automatically monitoring the fire extinguishing status and executing a re-ignition fire extinguishing operation when a re-ignition fire extinguishing signal is triggered.

[0014] To achieve the above-mentioned and other related objectives, the third aspect of the present invention provides a fixed fire extinguishing device based on a closed cabin, wherein the device comprises: a memory, a processor, and a computer program stored in the memory.

[0015] As described above, the present invention provides a fixed fire extinguishing system, method, and terminal for a closed cabin, which have the following beneficial effects: The present invention comprises: a fire detection module, an active alarm module, a fire determination module, and a fire extinguishing control module; wherein the fire detection module issues an automatic alarm signal or a user manually triggers an active alarm signal when environmental parameters meet fire alarm conditions; the fire determination module determines the cabin door closure status upon determining the presence of a fire and generates a linked fire control signal; the fire extinguishing control module performs a linked fire extinguishing operation on the closed cabin according to the linked fire control signal; and performs a re-ignition fire extinguishing operation upon triggering a re-ignition fire extinguishing signal. The present invention is intended to address the problem of the prior art that fixed fire extinguishing systems for closed cabins are insufficiently capable of responding to false fire alarms and re-ignition of fires. The present invention solves the technical problem of single detectors being prone to triggering false fire alarms by employing a logic design that simultaneously triggers alarm signals from multiple detectors and determines the cabin door closure status upon receiving dual signals. Furthermore, the present invention actively responds to re-ignition fires by linking the air and oil system and re-ignition monitoring, thereby protecting the safety of the closed cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of a fixed fire extinguishing system module based on a closed cabin in one embodiment of the present invention.

[0017] Figure 2 Shown is a flow chart of a fixed fire extinguishing method based on a closed cabin in one embodiment of the present invention.

[0018] Figure 3 Shown is a logical diagram of a fixed fire extinguishing method based on a closed cabin in one embodiment of the present invention.

[0019] Figure 4 Shown is a schematic structural diagram of a fixed fire extinguishing terminal based on a closed cabin in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0021] It should be noted that in the following description, reference is made to the accompanying drawings, which describe several embodiments of the present invention. It should be understood that other embodiments may be used and that mechanical, structural, electrical and operational changes may be made without departing from the spirit and scope of the present invention. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present invention is limited only by the claims of the published patents. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Spatially related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0022] Throughout this specification, when a part is said to be "connected" to another part, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a part is said to "include" a certain component, unless otherwise stated, this does not exclude the other component but rather implies that the other component may be included.

[0023] The terms "first," "second," and "third" are used to describe various parts, components, regions, layers, and / or segments, but are not intended to be limiting. These terms are used solely to distinguish one part, component, region, layer, or segment from another. Therefore, a reference to a first part, component, region, layer, or segment below may also refer to a second part, component, region, layer, or segment without departing from the scope of the present invention.

[0024] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0025] The present invention provides a fixed fire extinguishing system, method and terminal based on a closed cabin, comprising: a fire detection module, an active alarm module, a fire judgment module and a fire extinguishing control module; wherein the fire detection module sends an automatic alarm signal or the active alarm module manually triggers an active alarm signal; the fire judgment module determines the closed state of the cabin door when it determines that a fire has occurred, and generates a linkage fire control signal; the fire extinguishing control module performs a linkage fire extinguishing operation on the closed cabin; and performs a re-ignition fire extinguishing operation when a re-ignition fire extinguishing signal is triggered. The present invention is used to solve the problem of insufficient ability of the fixed fire extinguishing system for closed cabins in the prior art to respond to false fire alarms and re-ignition of fire. The present invention solves the technical problem that a single detector is prone to triggering false fire alarms by using a logic design in which multiple detectors trigger alarm signals at the same time and determine the closed state of the cabin door, and actively responds to re-ignition fires by linking the air-oil system and re-ignition monitoring to protect the safety of the closed cabin.

[0026] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be embodied in many different forms and is not limited to the embodiments described herein.

[0027] like Figure 1 Shown is a module schematic diagram of a fixed fire extinguishing system based on a closed cabin in an embodiment of the present invention.

[0028] The system includes: a fire detection module 101, an active alarm module 102, a fire judgment module 103, and a fire extinguishing control module 104; wherein the fire detection module 101 is used to monitor the environmental parameters in the closed cabin in real time, and to send out a corresponding automatic alarm signal when the monitored environmental parameters meet the fire alarm conditions; the active alarm module 102 is used for the user to manually send out an active alarm signal; the fire judgment module 103 is used to determine whether a fire occurs in the closed cabin based on the received automatic alarm signal and / or active alarm signal, and to generate a linkage fire control signal when it is determined that a fire occurs and the cabin door is in a closed state; the fire extinguishing control module 104 is used to perform a linkage fire extinguishing operation on the closed cabin according to the linkage fire control signal, and to perform a re-ignition fire extinguishing operation according to the automatic alarm signal sent by the fire detection module 101 during the fire extinguishing process.

[0029] In one embodiment, to ensure real-time safety monitoring of a sealed cabin, a fire detection module is installed within the cabin to monitor environmental parameters that could potentially trigger a fire. The fire detection module 101 includes a heat detector and a smoke detector. The heat detector monitors the temperature within the sealed cabin in real time and issues an automatic temperature alarm signal when the temperature data meets an abnormal temperature condition. The heat detectors are distributed and installed at predetermined intervals within the sealed cabin, ensuring comprehensive, real-time temperature monitoring of all areas within the cabin. They integrate high-precision temperature sensors and a data processing unit, covering a temperature measurement range of -20°C to 150°C with an accuracy of ±0.5°C, enabling precise capture of temperature fluctuations at localized hot spots. During operation, the data processing unit analyzes the collected temperature data in real time. If any of the following abnormal temperature conditions are met, the fire detection module 103 is immediately issued an automatic temperature alarm signal via wired or wireless communication, simultaneously uploading the real-time temperature data and monitoring location information. The abnormal temperature condition for the heat detector can be, but is not limited to, one of the following two conditions:

[0030] When the real-time temperature exceeds a preset threshold, an automatic temperature alarm is triggered. Different temperature thresholds can be set for different types of enclosed compartments based on their environmental characteristics and potential fire risks. For example, a ship's battery compartment can be set to 60°C, while a data center room can be set to 50°C.

[0031] When the monitored temperature rise rate per unit time exceeds a preset threshold, an automatic temperature alarm is issued. This threshold can be set based on the characteristics of the cabin, for example, 10°C / min. This monitoring of the temperature rise rate allows for a timely alarm in the early stages of a fire, even when the temperature has not yet reached the threshold but is rising rapidly, thus avoiding delayed response due to small temperature gradients.

[0032] The smoke detector is used to monitor the smoke particle data in the closed cabin in real time, and to send out an automatic smoke alarm signal when the smoke particle data meets the abnormal smoke conditions. The smoke detector also adopts a multi-point arrangement method and is installed on the top of the closed cabin or in a location with good air circulation, so as to timely and accurately monitor the smoke particle data in the cabin. It adopts the laser scattering principle or the ion sensing principle, and can detect smoke particles with a particle size range of 0.01μm to 10μm, with high sensitivity. When the smoke particle data monitored by the smoke detector meets the above-mentioned abnormal smoke conditions, it will immediately send out an automatic smoke alarm signal to the fire judgment module, and upload the smoke particle concentration data and monitoring location information. The abnormal smoke conditions of the smoke detector can be, but are not limited to, set as:

[0033] When the smoke particle concentration detected exceeds the preset concentration threshold, the smoke detector automatically triggers the alarm signal. The concentration threshold can be adjusted according to the cabin environment. For areas with less dust, such as data center rooms, the concentration threshold can be set to 0.05mg / m 3 For ship battery compartments where a small amount of dust may exist, the concentration threshold can be set at 0.1 mg / m 3 .

[0034] When the monitored smoke particle concentration rises within a short period of time and meets the preset trend characteristics, the smoke sensor will automatically issue a smoke alarm signal. For example, if the smoke particle concentration rises by more than 50% within 10 seconds, the alarm will be issued even if the concentration has not yet reached the threshold.

[0035] In one embodiment, the active alarm module 102 includes: a manual alarm button in the cockpit for the user to manually trigger the active alarm signal based on experience. The manual alarm button in the cockpit is installed in a position that is easy for the operator to quickly reach and has a good field of view, such as the ship's cockpit, the data center monitoring room, etc., to ensure that the staff can quickly find and operate it in an emergency. A transparent protective cover can be provided on the outside of the button. The protective cover adopts an anti-accidental touch design and requires a certain amount of force to open to avoid false triggering due to accidental collisions. When the staff discovers that there is a fire in the closed cabin through on-site observation, other auxiliary monitoring means, etc., and the automatic alarm system does not respond in time, such as a missed report, or it is determined that the automatic alarm signal is a false alarm, the button can be manually operated. The staff can rely on experience to judge whether a fire has occurred based on the specific environmental parameters provided by the fire detection module 101. For example, if the fire judgment module 103 only receives the temperature automatic alarm signal but does not receive the smoke automatic alarm signal, although the fire judgment module 103 determines it to be a false alarm, the cockpit display screen will simultaneously display the real-time smoke monitoring and temperature detection data and change trends of the area; the staff can make judgments based on their experience with the cabin environment, such as knowing that when equipment in a certain area is running, there will be short-term local high temperatures but no smoke generation, etc., combined with the provided dynamic data: if it is observed that the smoke concentration has not reached the smoke alarm threshold, but shows a slow upward trend, and there is a time correlation with the temperature increase, it can be judged as a real fire in the early stage. At this time, the active alarm signal is manually triggered to avoid delaying the fire extinguishing opportunity due to the single temperature signal not being identified as a fire by the system. Unlike the automatic alarm signal, the manual alarm signal has a higher priority. After receiving the signal, the fire judgment module will skip the dual automatic alarm signal confirmation process of the automatic alarm and directly send a linkage fire control signal.

[0036] In one embodiment, the fire determination module 103 is configured to determine that a fire has occurred in the closed cabin when receiving both a temperature-sensing automatic alarm signal and a smoke-sensing automatic alarm signal;

[0037] Specifically, upon receiving both the temperature and smoke alarm signals simultaneously, fire detection module 103 immediately determines that a fire has occurred within the enclosed cabin. Fire detection module 103 requires that the two alarm signals be spatially correlated, meaning they must originate from the same monitoring zone or adjacent monitoring points to prevent independent abnormal signals from different zones from being mistakenly identified as fires. A signal time synchronization window is also established to ensure temporal correlation between the two signals, eliminating interference from accidental triggering at different times. This design, through the coordinated verification of temperature and smoke, addresses the issue of false alarms from a single sensor.

[0038] If the fire detection module 103 receives only the temperature alarm signal from the heat detector but not the smoke alarm signal from the corresponding area's smoke detector, the system will identify it as a potential false alarm. The module will then initiate an interference troubleshooting process, such as accessing the temperature curve for the heat detector. If the abnormal temperature is found to be caused by non-fire factors such as a temporary overload or direct sunlight, and there is no sign of a sustained temperature increase, it will be marked as a false alarm. Staff can then conduct on-site verification based on this false alarm information.

[0039] If the fire detection module 103 receives only the smoke alarm signal from the smoke detector but not the temperature alarm signal from the corresponding area's temperature detector, it also identifies a potential false alarm. The module triggers smoke source analysis. If the smoke particles are determined to be dust accumulation, equipment oil mist, or water vapor, and there are no abnormal temperature fluctuations in the corresponding area, the module marks the alarm as a false alarm. Staff can then conduct on-site verification based on the false alarm information.

[0040] Upon receiving an active alarm signal—that is, a signal triggered by the manual alarm button in the cockpit—the fire determination module 103 directly determines that a fire has occurred within the enclosed cabin, regardless of whether it has received an automatic alarm signal from the fire detection module. This gives the active alarm signal the highest priority, eliminating the need for supplementary verification with the automatic alarm signal. This is because active alarm signals, derived from the on-site judgment of staff, can effectively supplement scenarios where automatic monitoring misses a fire. For example, if the automatic system only receives a single temperature or smoke alarm, the operator can determine whether a fire has occurred by combining historical cabin fire data with real-time feedback and trends, thereby avoiding missed fires by manually pressing the alarm button.

[0041] The synergy of these two judgment logics significantly improves system reliability: the dual automatic alarm signal verification mechanism reduces false alarms through cross-validation, while the single active signal mechanism fills in the blind spots of automatic monitoring through manual intervention. This allows personnel to quickly trigger a firefighting response through active alarms, especially in the early stages of a rekindled fire, thus preventing the escalation of the disaster caused by delayed automatic monitoring. Upon confirming a fire, the fire judgment module checks whether the doors of the enclosed cabin are closed. If so, it issues a fire control signal. If not, it issues a door closure alarm, prompting personnel to close the doors and ensure the cabin meets the sealing requirements. Once the cabin is confirmed to be sealed, a fire control signal is then issued.

[0042] In one embodiment, the linkage fire control signal includes an air and oil remote cut-off signal, a delay signal, and a valve control signal to control the cutting off of ventilation in the closed cabin, the cutting off of fuel supply, and the release of fire extinguishing agent.

[0043] The linked fire control signal uses multi-level coordinated control logic to contain the fire in the enclosed cabin. The air and oil remote cutoff signal, serving as the core signal for initial fire control, is triggered by the fire assessment module 103, which issues a linked fire control signal after confirming that the cabin door is closed. This air and oil remote cutoff signal is hardwired to the cabin ventilation system control cabinet and the solenoid valves in the fuel supply line, achieving a dual cutoff effect: It immediately shuts down ventilation equipment such as axial fans and exhaust fans, blocking oxygen supply channels and preventing the fire from being exacerbated by air circulation; and it also cuts off power to the fuel pump and fuel line valves, preventing fuel leakage and the formation of secondary combustion sources.

[0044] The delay signal is used to coordinate the timing of fire extinguishing agent release and air and oil remote cut-off, and its delay parameters can be dynamically set according to the cabin volume and complexity. When the fire judgment module 103 confirms the fire, the delay signal is started first, during which the air and oil remote cut-off signal is triggered synchronously to complete the ventilation and fuel cut-off, creating an oxygen-deficient fire extinguishing environment for the fire extinguishing agent; at the same time, during the delay window period, the staff can check the fire situation and surrounding systems again during the delay period to see if they are in a suitable fire extinguishing condition. Before the delay ends, the system automatically detects the air and oil cut-off status feedback signal. Only when it is confirmed that the ventilation has been shut down and the fuel has been cut off, the delay signal triggers the subsequent valve control signal to ensure that the fire extinguishing agent is in the best fire extinguishing condition when it is released. This mechanism not only avoids the hedging loss of fire extinguishing agent and air circulation, but also reduces the risk of misoperation through status detection.

[0045] The valve control signal utilizes independent zone control logic and is linked to the zone monitoring data from the fire assessment module 103. Each fire zone corresponds to an independent fire extinguishing agent storage tank and electric control valve. The valve control signal contains the zone address code and opening instruction, dispensing fire extinguishing agent based on the fire situation. Furthermore, the valve control signal is interlocked with the delay signal, allowing activation only after the delay has expired and the air and oil remote cutoff signal has been confirmed to be effective, preventing the accidental release of fire extinguishing agent during false alarms.

[0046] In one embodiment, performing a linked fire extinguishing operation on a closed cabin according to the linked fire control signal includes: when the fire judgment module 103 confirms the fire, when it is determined that the closed cabin is in a closed state with a door, immediately generating a linked fire control signal to perform a linked fire extinguishing operation on the closed cabin.

[0047] Execute a first-level fire-extinguishing operation; this includes shutting off the ventilation and fuel supply systems in response to a remote air and oil shutoff signal. Specifically, for the ventilation system, upon triggering the remote air and oil shutoff signal, the control unit immediately shuts down the ventilation fans and simultaneously closes the fire dampers in the ventilation ducts. To ensure shutoff reliability, upon receiving the signal, the ventilation system must provide feedback on the execution status, such as fan shutdown and fire damper closure status. If no valid feedback is received, the system can activate a backup mechanical shutoff circuit to forcibly terminate ventilation. For the fuel supply system, the remote air and oil shutoff signal is hardwired to the fuel pump control box and the emergency shutoff valve in the fuel supply line. The system then shuts off the fuel pump power to stop fuel supply and then closes the emergency shutoff valve. After shutoff, the system monitors fuel line pressure in real time. If the pressure does not drop to a safe threshold, the shutoff is deemed to have failed, prompting personnel to perform manual intervention, eliminating the risk of fire spreading due to continued fuel supply at the source. The primary link in the coordinated fire control response is the first-level fire extinguishing operation. Its core goal is to curb the initial spread of the fire and reduce the conditions for re-ignition by cutting off the supply of combustion support and fuel, while creating a closed environment for subsequent fire extinguishing operations.

[0048] After the first-level firefighting operation is completed, the second-level firefighting operation is executed. The second-level firefighting operation is implemented based on the completion of the first-level operation. The delayed release mechanism reduces ineffective firefighting caused by false alarms and ensures that the fire extinguishing agent is accurately applied to the fire area. First, the delay window period of the bottle head valve is activated according to the delay signal. The window period duration can be preset according to the cabin type, such as 30 seconds for a ship battery cabin and 20 seconds for a data center computer room.

[0049] At the end of the delay window, the first gas cylinder is configured to be in an activated standby state, and its cylinder head valve control circuit is in a conduction ready state, which can respond to the valve control signal and take immediate action; the valve control signal drives the cylinder head valve, which immediately opens the first gas cylinder to release the fire extinguishing agent and release the preset dose, which includes but is not limited to HFC-227ea. During the release process, the system monitors the pressure of the fire extinguishing agent pipeline of the first gas cylinder in real time through a pressure sensor to ensure stable flow; the above-mentioned release logic improves the utilization rate of the fire extinguishing agent and reduces the probability of re-ignition in a closed oxygen-free environment by coordinating with the timing of the first-level operation. After the release is completed, the system can automatically switch the cylinder head valve control: by detecting that the pressure in the cylinder drops to the preset threshold through the pressure sensor installed in the outlet pipe of the first gas cylinder or confirming that the release action is completed through a specific timing setting, the control system immediately executes the state switching logic, cuts off the control circuit of the first gas cylinder and locks its cylinder head valve, and at the same time connects the control circuit of the second gas cylinder, which is electrically isolated from the trigger system, to the trigger system, so that it changes from a passive standby state to an activated standby state.

[0050] In one embodiment, the automatic alarm signal issued by the fire detection module 101 includes:

[0051] According to the temperature sensor of the fire detection module 101, a re-ignition fire extinguishing signal is issued when the temperature data monitored by the temperature sensor within a preset time after the end of the secondary fire extinguishing operation meets the temperature re-ignition condition; the temperature re-ignition condition of the temperature sensor sets the re-ignition alarm threshold according to the characteristics of the cabin temperature field after the fire is extinguished, and the threshold monitoring logic includes but is not limited to when the temperature of any area is monitored to rise above a specific temperature or the temperature rise exceeds a specific temperature amplitude within a specific time; when any of the above conditions is met, the detector will continuously verify the data, and after confirming that the temperature abnormality persists, it will immediately issue a re-ignition fire extinguishing signal.

[0052] The smoke detector of the fire detection module 101 issues a rekindling fire extinguishing signal when smoke particle data detected by the fire detection module 101 meets the smoke rekindling conditions within a preset time after the completion of the secondary fire extinguishing operation. The smoke detector's smoke rekindling conditions are algorithmically optimized for the residual aerosol environment after fire extinguishing. The threshold monitoring logic includes, but is not limited to, monitoring the particle concentration gradient threshold. The residual smoke concentration in the cabin generally decreases after fire extinguishing. If the monitored smoke concentration continues to rise above a specific threshold within a specific time period, rekindling is confirmed and the rekindling fire extinguishing signal is issued.

[0053] After the second-level fire extinguishing operation is completed, the system automatically enters the re-ignition monitoring stage. The preset monitoring time can be determined according to the type of cabin fire and the characteristics of the fire extinguishing agent. For example, areas with chemical combustion risks such as ship battery compartments can be preset to 60 minutes, and areas with solid combustibles such as data center computer rooms can be preset to 30 minutes. This duration must cover the critical window period when the suppression effect of the fire extinguishing agent decays to ensure full monitoring of the re-ignition of residual fires. During the monitoring period, the temperature detector and the smoke detector maintain a high-frequency acquisition state to capture the weak signals at the initial stage of re-ignition. Whether it is the re-ignition extinguishing signal triggered by temperature or smoke, it is transmitted to the fire extinguishing control module 104 using a dual-path combination of wired and wireless to ensure reliable transmission when the local line of the enclosed cabin is damaged. After receiving the signal, the system skips the delay link of the first-level fire extinguishing operation and immediately starts the re-ignition extinguishing operation.

[0054] In one embodiment, the re-ignition fire extinguishing operation includes: driving the bottle head valve to release a second bottle of fire extinguishing agent according to the re-ignition fire extinguishing signal, and extending the release time of the fire extinguishing agent until the fire is extinguished. The re-ignition fire extinguishing operation is an enhanced fire extinguishing mechanism designed for fire re-ignition scenarios. Through secondary release and dynamic duration control, it solves the problem of residual fire re-ignition caused by single release termination in traditional systems.

[0055] When the re-ignition fire extinguishing signal is transmitted to the control system, the system immediately outputs a driving signal through the activated fire extinguishing agent control circuit of the second gas cylinder, driving the fire extinguishing agent head valve of the second gas cylinder to open the valve to release the fire extinguishing agent. Compared with the first gas cylinder, the second gas cylinder can adopt a large flow outlet design to ensure the fire extinguishing intensity during the re-ignition stage. The release time of the fire extinguishing agent of the second gas cylinder is determined by the temperature and smoke data collected in real time by the fire detection module 101 during the release process. Until all sensor data are within the safe range for a continuous time period and no re-ignition trend is detected, such as no local temperature rise point or no characteristic gas release, the system determines that the re-ignition is extinguished, issues a shutdown command, and stops releasing the fire extinguishing agent.

[0056] Based on the characteristics of fires in closed cabins: the re-ignition of residual fires at hidden fire points often has a delay, and it is difficult to completely suppress the residual fire with a short period of fire extinguishing agent coverage. In order to prevent the re-ignition, after the fire extinguishing agent of the second gas cylinder is released, the system starts the control logic of extending the soaking time, and the effective residence time of the preset fire extinguishing agent in the closed cabin is set. Specifically, after the bottle head valve is closed, the system starts timing, and at the same time, the linkage ventilation system remains closed and the isolation valve remains closed to ensure that the cabin is in a closed environment to maintain the concentration of fire extinguishing agent. During this period, the fire detection module 101 continuously monitors the temperature and smoke particle concentration in the cabin. If the temperature is not detected to rise within a longer specific time period and the smoke concentration continues to be lower than a specific value, the system can determine that the safety conditions are met, and gradually open the ventilation system for replacement, so as to further strengthen the prevention and control capabilities of the re-ignition of the fire.

[0057] It should be noted that the division of modules in the embodiment of the enclosed cabin-based fixed fire-extinguishing system is merely a logical functional division. In actual implementation, all or part of these modules may be integrated into a single physical entity, or they may be physically separated. Furthermore, these modules may be implemented entirely as software invoked by processing elements, entirely as hardware, or partially as software invoked by processing elements, while others may be implemented in hardware. Since the implementation principles of this enclosed cabin-based fixed fire-extinguishing system have been described in the aforementioned embodiment, they will not be repeated here.

[0058] Similar to the principles of the above embodiments, the present invention provides a fixed fire extinguishing method based on a closed cabin. Figure 2 The following is a flow chart of a fixed fire extinguishing method based on a closed cabin in one embodiment of the present invention, wherein the method comprises:

[0059] Step S21: When the environmental parameters meet the fire alarm conditions, an automatic alarm signal is issued or an active alarm signal is manually triggered by the user;

[0060] Step S22: determining whether a fire has occurred based on the alarm signal, and determining the closed state of the hatch when a fire has occurred, and generating a linkage fire control signal;

[0061] Step S23: performing a linked fire extinguishing operation in the closed cabin according to the linked fire control signal;

[0062] Step S24: Automatically monitor the fire extinguishing situation and execute the re-ignition fire extinguishing operation when the re-ignition fire extinguishing signal is triggered.

[0063] In order to better illustrate the above-mentioned fixed fire extinguishing method based on a closed cabin, the present invention provides the following specific embodiments.

[0064] Embodiment: A method of fixed fire extinguishing based on a closed cabin. Figure 3 It is a logical diagram showing a fixed fire extinguishing method based on a closed cabin in one embodiment of the present invention.

[0065] The method comprises:

[0066] S31: Fire monitoring started

[0067] The fire monitoring module captures temperature and smoke data in real time, and automatically issues an alarm signal when any indicator reaches the fire alarm condition; at the same time, the active alarm module allows the user to manually trigger the alarm, forming an automatic and active dual alarm trigger mechanism.

[0068] S32: Fire Assessment

[0069] The fire detection module aggregates all alarm signals and only detects a fire in two situations: when both automatic temperature and smoke alarms are received, or when an active alarm is received. Upon fire detection, the system checks whether the hatch is closed. If so, a coordinated fire control signal is generated, ensuring that firefighting is carried out within a sealed environment.

[0070] S33: Staged fire extinguishing

[0071] The fire extinguishing control module performs two steps according to the linkage fire control signal:

[0072] Level 1 operation: Shut down the ventilation system and oil supply system through the air and oil remote cut-off signal, cutting off the combustion source and fuel supply;

[0073] Secondary operation: Combined with the delay signal and valve control signal, the cylinder head valve is driven to release the first cylinder fire extinguishing agent to complete the initial fire extinguishing.

[0074] S34: Reignition Monitoring and Disposal

[0075] The fire detection module continuously monitors the status after fire extinguishing. If a re-ignition signal is triggered, it immediately notifies the fire extinguishing control module to start the re-ignition operation: the fire extinguishing agent in the second gas cylinder is released through the valve control signal, and the release and soaking time are extended until the fire is completely extinguished, forming a closed-loop control of the re-ignition risk.

[0076] The entire method is based on the logical chain of monitoring-judgment-fire extinguishing-reignition disposal. It reduces false alarms through double signal judgment and improves fire extinguishing reliability through graded operations and reignition response.

[0077] The fixed fire extinguishing method based on a closed cabin provided by the embodiment of the present invention can be implemented on the terminal side. As for the hardware structure of the application terminal of the fixed fire extinguishing method based on a closed cabin, please refer to Figure 4 , which is an optional hardware structure diagram of an application terminal 4000 of a fixed fire extinguishing method based on a closed cabin provided by an embodiment of the present invention, such as Figure 4 As shown, the computer device includes: at least one processor 401, memory 402, at least one network interface 403 and a user interface 405. The various components in the device are coupled together via a bus system 404. It is understood that the bus system 404 is used to achieve connection and communication between these components. In addition to including a data bus, the bus system 404 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the bus system 404 is not described in detail. Figure 4 In the text, various buses are labeled as bus systems.

[0078] The user interface 405 may include a display, a keyboard, a mouse, a trackball, a click gun, keys, buttons, a touch pad or a touch screen.

[0079] It will be appreciated that the memory 402 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM) or a programmable read-only memory (PROM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM) and synchronous static random access memory (SSRAM). The memory described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0080] The memory 402 in the embodiment of the present invention is used to store various categories of data to support the operation of the electronic terminal 400. Examples of such data include: any executable program for operating on the electronic terminal 400, such as an operating system 4021 and an application 4022; the operating system 4021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 4022 can include various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. The implementation of the fixed fire extinguishing method based on a closed cabin provided in the embodiment of the present invention can be included in the application 4022.

[0081] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 401. Processor 401 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in processor 401 or by software instructions. The above processor 401 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 401 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor 401 may be a microprocessor or any conventional processor. The steps of the accessory optimization method provided in conjunction with the embodiments of the present invention can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium located in a memory. The processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0082] In an exemplary embodiment, the electronic terminal 400 may be used by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), and complex programmable logic devices (CPLDs) to execute the aforementioned methods. A person skilled in the art will appreciate that all or part of the steps in implementing the aforementioned method embodiments may be accomplished by hardware associated with a computer program. The aforementioned computer program may be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the aforementioned method embodiments; and the aforementioned storage medium includes various media that can store program codes, such as ROM, RAM, magnetic disks, or optical disks.

[0083] In the embodiments provided herein, the computer readable and writable storage medium may include a read-only memory, a random access memory, an EEPROM, a CD-ROM or other optical disk storage device, a magnetic disk storage device or other magnetic storage device, a flash memory, a USB flash drive, a mobile hard disk, or any other medium that can be used to store desired program code in the form of instructions or data structures and can be accessed by a computer. In addition, any connection can be appropriately referred to as a computer readable medium. For example, if the instruction is sent from a website, a server or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of the medium. However, it should be understood that computer readable and writable storage media and data storage media do not include connections, carriers, signals or other temporary media, but are intended to be non-temporary, tangible storage media. Disk and disc, as used in this application, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.

[0084] In summary, the present invention provides a fixed fire extinguishing system, method and terminal based on a closed cabin, comprising: a fire detection module, an active alarm module, a fire judgment module and a fire extinguishing control module; wherein the fire detection module sends an automatic alarm signal or the active alarm module manually triggers an active alarm signal; the fire judgment module determines the closed state of the cabin door when judging that a fire has occurred, and generates a linkage fire control signal; the fire extinguishing control module performs a linkage fire extinguishing operation on the closed cabin; and performs a re-ignition fire extinguishing operation when a re-ignition fire extinguishing signal is triggered. The present invention is used to solve the problem of insufficient ability of the fixed fire extinguishing system for closed cabins in the prior art to respond to false fire alarms and re-ignition of fire. The present invention solves the technical problem that a single detector is prone to triggering false fire alarms by using a logic design in which multiple detectors trigger alarm signals at the same time and determine the closed state of the cabin door, and actively responds to the re-ignition of fire by linking the air-oil system and re-ignition monitoring to protect the safety of the closed cabin.

[0085] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A fixed fire extinguishing system based on a closed cabin, characterized in that: include: Fire detection module, active alarm module, fire judgment module, fire extinguishing control module; among them, The fire detection module is used to monitor the environmental parameters in the closed cabin in real time and send out a corresponding automatic alarm signal when the monitored environmental parameters meet the fire alarm conditions; The active alarm module is used for the user to manually send an active alarm signal; The fire judgment module is connected to the fire detection module and the active alarm module, and is used to determine whether a fire occurs in the closed cabin based on the received automatic alarm signal and / or active alarm signal, and generate a linkage fire control signal when it is determined that a fire occurs and the cabin door is in a closed state; The fire extinguishing control module is connected to the fire judgment module and is used to perform a linkage fire extinguishing operation on the closed cabin according to the linkage fire control signal, and perform a re-ignition fire extinguishing operation according to the automatic alarm signal sent by the fire detection module during the fire extinguishing process.

2. A fixed fire extinguishing system based on a closed cabin according to claim 1, characterized in that: The fire detection module includes: a temperature detector and a smoke detector; wherein, The temperature detector is used to monitor the temperature data in the closed cabin in real time and send out an automatic temperature alarm signal when the temperature data meets the temperature abnormality condition; The smoke detector is used to monitor the smoke particle data in the closed cabin in real time, and to send out an automatic smoke alarm signal when the smoke particle data meets the smoke abnormality condition.

3. A fixed fire extinguishing system based on a closed cabin according to claim 1, characterized in that: The active alarm module includes: a manual alarm button in the cockpit is used for the user to manually trigger the active alarm signal based on experience.

4. A fixed fire extinguishing system based on a closed cabin according to claim 2, characterized in that: The fire judgment module is used to determine that a fire has occurred in the closed cabin when it receives both a temperature-sensing automatic alarm signal and a smoke-sensing automatic alarm signal; or to determine that a fire has occurred in the closed cabin when it receives an active alarm signal.

5. A fixed fire extinguishing system based on a closed cabin according to claim 1, characterized in that: The linkage fire control signal includes an air and oil remote cut-off signal, a delay signal and a valve control signal to control the cutting off of ventilation in the closed cabin, cutting off the fuel supply and the release of fire extinguishing agent.

6. A fixed fire extinguishing system based on a closed cabin according to claim 5, characterized in that: The performing of the linked fire extinguishing operation in the closed cabin according to the linked fire control signal includes: Execute the first-level fire extinguishing operation; wherein, the first-level fire extinguishing operation includes: cutting off the ventilation system and the fuel supply system according to the air and oil remote cut-off signal; After the first-level fire extinguishing operation is completed, the second-level fire extinguishing operation is performed; wherein, the second-level fire extinguishing operation includes: establishing a delay window period of the bottle head valve according to the delay signal, and driving the bottle head valve to release the fire extinguishing agent of the first gas cylinder according to the valve control signal at the end of the delay window period.

7. A fixed fire extinguishing system based on a closed cabin according to claim 6, characterized in that: The automatic alarm signal issued by the fire detection module includes: The fire detection module sends a re-ignition fire extinguishing signal when the temperature data detected by the heat sensor of the fire detection module meets the temperature re-ignition condition within a preset time after the completion of the secondary fire extinguishing operation; The smoke detector according to the fire detection module sends a re-ignition fire extinguishing signal when the smoke particle data detected by the smoke detector meets the smoke re-ignition condition within a preset time after the secondary fire extinguishing operation is completed.

8. A fixed fire extinguishing system based on a closed cabin according to claim 6, characterized in that: The re-ignition fire extinguishing operation includes: driving the cylinder head valve to release the fire extinguishing agent from the second gas cylinder according to the re-ignition fire extinguishing signal, and extending the release and soaking time of the fire extinguishing agent until the fire is extinguished.

9. A method for fixed fire extinguishing in an enclosed cabin, applied to a fixed fire extinguishing system in an enclosed cabin as claimed in any one of claims 1 to 8, comprising: When the environmental parameters meet the fire alarm conditions, an automatic alarm signal is issued or the user manually triggers an active alarm signal; Determining whether a fire has occurred based on the alarm signal, and determining the closed state of the hatch when a fire has occurred, and generating a linkage fire control signal; Executing a linked fire extinguishing operation in the closed cabin according to the linked fire control signal; Automatically monitor the fire extinguishing situation and execute the re-ignition fire extinguishing operation when the re-ignition fire extinguishing signal is triggered.

10. An electronic terminal, used in the fixed fire extinguishing method based on a closed cabin as claimed in claim 9, the device comprising: A memory, a processor, and a computer program stored in the memory.

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