A mobile platform based automatic fire extinguishing device

Abstract

The application discloses a kind of automatic fire extinguishing device based on mobile platform, it is related to automatic fire extinguishing appliance technical field, including base;The application improves the safety of fire rescue by cooperating control module with electromagnetic valve, to realize automatic fire extinguishing control function;According to the fire feature output by sensing unit, intelligent matching nozzle type and injection mode is carried out by execution control unit;The instantaneous injection amount of fire extinguishing agent is accurately controlled by the dynamic adjustment of electromagnetic valve opening degree by varistor, and the fire extinguishing effect is real-time evaluated based on combustion-inhibition kinetics equation, the electromagnetic valve opening degree is closed-loop adjusted according to the change of fire range, and the intelligent control loop of "sensing-decision-execution-feedback" is formed;When temperature drops and flame signal disappears, it is automatically determined that fire has been extinguished and injection is terminated, effectively avoiding the invalid consumption of fire extinguishing agent, and significantly improving the accuracy and intelligent level of fire extinguishing operation.

Description

Technical Field

[0001] This invention relates to the field of automatic fire extinguishing equipment technology, and in particular to an automatic fire extinguishing device based on a mobile platform. Background Technology

[0002] With the continuous increase in the scale and complexity of urban buildings, and the widespread application of new energy technologies in building and industrial settings, fire accidents are characterized by enclosed spaces, complex structures, dense equipment, and harsh handling environments. Currently, fire handling in buildings and new energy facilities mainly relies on firefighters manually carrying fire extinguishing equipment into the site for operation. Under high-risk or confined space conditions, the risk of personnel exposure is relatively high. Existing automatic fire extinguishing equipment generally has the following defects. First, fire extinguisher installation methods are limited: most only support a single fixed vertical or horizontal posture, making them poorly adaptable to installation space, mobile platform structures, and complex terrain. They are prone to shaking, shifting, or even falling off during movement, lacking sufficient shock resistance and stability, and unable to meet the needs of multiple scenarios and platforms. Second, most devices still rely on manual activation of the fire extinguisher, requiring operators to be close to the fire source, greatly increasing safety hazards such as burns, poisoning, and explosions, making it difficult to achieve unmanned, long-distance fire extinguishing. At the same time, disassembly and maintenance are inconvenient: the process of replacing fire extinguishers and connecting pipelines is cumbersome, lacking quick disassembly and assembly structures. In the event of a fire emergency, it is impossible to quickly replace the extinguishing agent or inspect the pipeline, affecting the efficiency and continuity of fire extinguishing. Therefore, the above-mentioned problems need to be addressed and improved. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic fire extinguishing device based on a mobile platform.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an automatic fire extinguishing device based on a mobile platform, comprising a base and an insulated box installed at the front end of the top surface of the base, wherein a first fixing mechanism and a second fixing mechanism for vertically and horizontally placing fire extinguishers are installed at the rear end of the top surface of the base, a control mechanism for controlling the switch of the fire extinguisher is installed inside the insulated box, and a quick-release mechanism for controlling the fire extinguishing range is installed on the top surface of the base, wherein the quick-release mechanism is located at the front end of the insulated box; The control mechanism includes a control module installed on the top surface of the base, and the control module contains a perception and decision unit and an execution control unit. The perception and decision-making unit acquires multi-source data and preprocesses it to remove outliers; it inversely calculates the core temperature of the fire source based on the principle of thermal imaging, filters high-temperature pixel areas by setting a temperature threshold, and calculates the area or radius of the fire range by combining distance and sensor field of view parameters; at the same time, it uses the ratio of ultraviolet and infrared radiation intensity to determine whether the fire source is an open flame or smoldering, and determines the planar position of the fire source relative to the device through triangulation, and finally outputs four key characteristic parameters: fire source temperature, fire range, fire source type, and fire source location. The execution control unit dynamically adjusts the spraying strategy based on the fire characteristics output by the sensing unit; it controls the instantaneous spraying amount of extinguishing agent by adjusting the opening of the solenoid valve through the rheostat; at the same time, it monitors the changes in the fire range in real time, evaluates the fire extinguishing effect according to the combustion-inhibition kinetic equation, and dynamically adjusts the opening of the solenoid valve according to the real-time fire range to form a closed-loop control.

[0005] Preferably, the data analysis steps of the perception decision unit are as follows: M1: Acquires and preprocesses multi-source data, extracts fire characteristic parameters based on the preprocessed data: obtains the infrared radiation intensity of each pixel through an infrared temperature sensor. Inverting the core temperature of the fire source Set fire detection thresholds Screening temperature The pixels form a set of heat sources; M2: Retrieve the straight-line distance to the fire source obtained from the laser rangefinder sensor. The actual physical area of ​​a single pixel is calculated by combining the sensor's field of view parameters. Multiply by the total number of pixels in the heat source set Obtain the area of ​​the fire The threshold values ​​for the ratio of ultraviolet to infrared radiation intensity and the spectral ratio are obtained using a flame sensor. The type of fire source is determined by comparison, whether it is an open flame or smoldering; the coordinates of the center of the smallest circumcircle of the heat source set are used as the reference. Calculate azimuth angle using sensor intrinsic parameters The location of the fire source was determined to be... .

[0006] Preferably, the data analysis steps of the execution control unit are as follows: N1: Dynamically adjust the spraying strategy based on the fire characteristic parameters output by the sensing and decision-making unit: if the fire source is an open flame, select direct-fire or cone-shaped nozzles for concentrated fire suppression; if it is smoldering, select atomizing or diffusion nozzles for cooling and penetration; if the fire area... or radius Large-area coverage is achieved through sweeping fire from mobile platforms; if or The nozzle is precisely positioned to cover the center of the fire source for targeted application. and These are the preset fire range threshold and radius threshold, respectively; N2: Adjust the opening ratio of the solenoid valve via a variable resistor. Controlling the instantaneous spray volume of extinguishing agent , A fixed coefficient; real-time monitoring of the fire's extent. The changes follow the combustion-inhibition kinetic equations. Evaluate the fire extinguishing effectiveness and obtain points. According to the real-time fire range With injection pressure Dynamically adjust the opening of the solenoid valve This forms a closed-loop control; when the temperature change rate And the range of the fire When the fire shrinks, the fire is considered extinguished effectively; when... And the flame sensor output voltage At that point, it was determined that the fire had been extinguished, and spraying was stopped.

[0007] Preferably, the first fixing mechanism includes a support seat that is bolted to the top surface of the base, and a fixing cylinder for vertically placing the fire extinguisher is fixed to the top surface of the support seat. The fixing cylinder has a double-layer structure, and the inner wall of the fixing cylinder is coated with a damping coating.

[0008] Preferably, the second fixing mechanism includes a support rod that is mounted on the top surface of the base by screws, and two symmetrical fixing rings are mounted on the top end of the support rod. Both ends of the two fixing rings are fixed with ear plates, and the two ear plates are connected by screws.

[0009] Preferably, the control mechanism includes a mobile power supply and a solenoid valve mounted on the top surface of the base, and the mobile power supply, solenoid valve and control module are all located inside the insulation box.

[0010] Preferably, the power supply, solenoid valve, and control module are connected by a power cord, and a rheostat is connected between the power supply and the solenoid valve.

[0011] Preferably, the quick-release mechanism includes an input end connected to the rear end of the solenoid valve and a fire pipe connected to the front end of the solenoid valve. A positioning block is installed on the top surface of the base by screws. An arc-shaped groove for placing the fire pipe is opened on the positioning block. A cable tie for fixing the fire pipe is installed on the positioning block. A threaded interface is installed at the other end of the fire pipe. A nozzle is threadedly connected to the other end of the threaded interface. A valve for connecting to a fire extinguisher is installed at the other end of the input end.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The combination of the first and second fixing mechanisms facilitates stable positioning of vertical and horizontal fire extinguishers, improving shock resistance during movement and thus ensuring reliable installation and terrain adaptability. Furthermore, the cooperation between the flame recognition module and the solenoid valve enables automatic flame recognition and triggering without manual operation, enhancing fire rescue safety and achieving automatic fire suppression control. The threaded interface and nozzle allow for quick replacement of nozzles with different spray angles, facilitating adjustments to the extinguishing range for various fire conditions and improving accuracy, thus enabling multi-scenario adaptation. Ultimately, this solves the problems of traditional devices, such as limited installation methods, lack of automatic control, and restricted extinguishing range adjustment. 2. The sensing and decision-making unit uses infrared thermal imaging technology to invert the core temperature of the fire source, and combines laser ranging and field of view parameters to accurately calculate the fire area. It accurately distinguishes between open flames and smoldering fire sources by using the ultraviolet / infrared spectral ratio, and uses triangulation to determine the specific position of the fire source relative to the device. The unit finally outputs four key characteristic parameters: fire source temperature, fire range, fire source type, and fire source location. This provides comprehensive and reliable data support for subsequent precise fire extinguishing, and solves the problem of blind operation that traditional devices cannot obtain detailed fire information and rely on manual visual judgment. 3. The execution control unit intelligently matches the nozzle type and spraying method based on the fire characteristics output by the sensing and decision-making unit: direct-fire nozzles are selected for concentrated suppression of open flames, while atomizing nozzles are selected for expanded coverage of smoldering flames; when the fire area is large, the sweeping mode is automatically switched, and when the area is small, precise spraying is applied at fixed points. The opening of the solenoid valve is dynamically adjusted by a rheostat to precisely control the instantaneous spray volume of the extinguishing agent, and the extinguishing effect is evaluated in real time based on the combustion-suppression kinetic equation. The opening of the solenoid valve is adjusted in a closed loop according to the changes in the fire area, forming an intelligent control loop of "sensing-decision-execution-feedback"; when the temperature drops and the flame signal disappears, the fire is automatically determined to be extinguished and the spraying is terminated, effectively avoiding the ineffective consumption of extinguishing agent and significantly improving the accuracy and intelligence level of fire extinguishing operations. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the first installation method of the device proposed in this invention; Figure 2 This is a schematic diagram of the second installation method of the device proposed in this invention; Figure 3 This is a top view of the overall appearance of the device proposed in this invention; Figure 4 This is a schematic diagram of the first fixing mechanism proposed in this invention; Figure 5 This is a schematic diagram of the control mechanism structure proposed in this invention; Figure 6 This is a schematic diagram of the quick-release mechanism proposed in this invention; Figure 7 This is a schematic diagram of the second fixing mechanism proposed in this invention; Figure 8 This is a flowchart of the system proposed in this invention.

[0014] The following are the components listed in the diagram: 1. Base; 2. Insulation box; 3. Support base; 4. Fixing cylinder; 5. Support rod; 6. Fixing ring; 7. Power supply; 8. Solenoid valve; 9. Control module; 10. Rheostat; 11. Input terminal; 12. Fire hose; 13. Positioning block; 14. Cable tie; 15. Threaded interface; 16. Nozzle; 17. Air valve. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] Example 1: See Figures 1 to 7This invention discloses an automatic fire extinguishing device based on a mobile platform, comprising a base 1 and an insulated box 2 installed at the front of the top surface of the base 1. A first fixing mechanism and a second fixing mechanism are installed at the rear of the top surface of the base 1 for vertically and horizontally placing fire extinguishers. The first and second fixing mechanisms are not installed simultaneously, but rather according to the terrain and actual usage conditions, allowing for vertical or horizontal installation of the fire extinguishers. This ensures the device can extinguish fires in any terrain and flexibly selects the installation posture of the fire extinguishers according to the actual application scenario, improving the adaptability of the automatic fire extinguishing device to different mobile platforms, installation spaces, and operational requirements without changing the overall structure of the device. The insulated box 2 contains a control mechanism for controlling the fire extinguisher switch. This control mechanism is electrically connected to a flame detection module. When the flame detection module detects a fire source, it automatically triggers the opening of a solenoid valve, thereby achieving automatic control of the fire extinguishing process and improving the safety and flexibility of fire response. A quick-release mechanism is installed on the top surface of the base 1 to control the fire extinguishing range. To ensure effective delivery of the fire extinguisher, the spray pattern and spray range are adjusted to improve the uniformity of spatial coverage of the fire extinguisher within the target area. The quick-release mechanism is located at the front end of the insulated box 2. The first fixing mechanism includes a support base 3 bolted to the top surface of the base 1. A fixing cylinder 4 for vertically placing the fire extinguisher is fixed to the top surface of the support base 3. The double-layered fixing cylinder 4 ensures that the fire extinguisher does not shake, while also providing insulation and anti-collision protection for the fire extinguisher, ensuring the stability of the fire extinguisher during firefighting. The fixing cylinder 4 has a double-layer structure, and the inner wall of the fixing cylinder 4 is coated with a damping coating, which increases the friction between the fire extinguisher and the inner wall of the fixing cylinder 4. The control mechanism includes a mobile power supply 7, a solenoid valve 8, and a control module 9 installed on the top surface of the base 1. The mobile power supply 7 provides power to the solenoid valve 8 and the control module 9. The mobile power supply 7, the solenoid valve 8, and the control module 9 are all located inside the insulated box 2. The mobile power supply 7, the solenoid valve 8, and the control module 9 are connected by a power cord, and a rheostat 10 is connected between the mobile power supply 7 and the solenoid valve 8.

[0017] In this invention, the quick-release mechanism includes an input end 11 connected to the rear end of the solenoid valve 8 and a fire hose 12 connected to the front end of the solenoid valve 8. A plastic tube connects the input end 11 to the fire extinguisher. The solenoid valve 8 controls the opening or closing of the extinguishing agent when it receives a trigger signal output by the flame recognition module. A positioning block 13 is installed on the top surface of the base 1 by screws. The positioning block 13 facilitates the fixing of the fire hose 12 with cable ties 14. An arc-shaped groove for placing the fire hose 12 is provided on the positioning block 13. Cable ties 14 for fixing the fire hose 12 are installed on the positioning block 13. A threaded interface 15 is installed at the other end of the fire hose 12. By adopting a threaded connection, nozzles with different structures and spray characteristics can be selected and replaced according to the specific conditions of the fire scene. For example, a diffusion nozzle, a fan-shaped nozzle, or other nozzle structures that are conducive to expanding the spray coverage range can be used. This design helps to adjust the spray pattern and spray range while ensuring the effective delivery of the fire extinguisher, thereby improving the fire extinguishing effect. The uniformity of spatial coverage within the target area is ensured. Furthermore, by rationally designing the nozzle's ejection structure, the local impact force during fire extinguisher spraying can be reduced to a certain extent, avoiding the splashing of combustibles, fire spread, or secondary hazards caused by high-speed direct spraying. This makes it more conducive to achieving a stable and comprehensive fire extinguishing effect on the fire source area. The other end of the threaded interface 15 is threadedly connected to the nozzle 16, and the other end of the input end 11 is equipped with an air valve 17 for connecting to the fire extinguisher. The air valve 17 facilitates quick replacement of the fire extinguisher. In this installation method, the fire extinguisher is installed vertically on the support base 3. The fixing cylinder 4 is preferably a double-layer thin-walled ring structure. The fire extinguisher is inserted into the thin-walled ring from above, thereby effectively limiting the fire extinguisher in the horizontal direction, preventing it from shaking or shifting during movement, and resisting the reaction force generated when the fire extinguisher sprays the extinguishing agent. It is detachably connected to the base 1 by bolts to achieve quick installation and removal of the fire extinguisher.

[0018] Example 2: The technical solution is basically the same as that of Example 1, except that, as Figure 2 , Figure 5 , Figure 7 As shown, the second fixing mechanism includes a support rod 5 mounted on the top surface of the base 1 by screws, which facilitates the support of the fire extinguisher. Two symmetrical fixing rings 6 are installed at the top of the support rod 5. The arc-shaped fixing device adopts an arc-shaped fixing structure that matches the shape of the fire extinguisher, providing stable support and limiting for the fire extinguisher body. Both ends of the two fixing rings 6 are fixed with ear plates, which are connected by screws. In this installation method, the fire extinguisher is installed on the base 1 in a horizontal position. The inner contour of the fixing ring 6 matches the shape of the outer wall of the fire extinguisher, which is used to form surface contact support and limiting for the fire extinguisher body, thereby improving the stability in the horizontal placement state. The arc-shaped fixing rings 6 are also fixedly connected to the mounting base plate by bolts to ensure that the fire extinguisher remains reliably fixed during movement and spraying.

[0019] Working Principle: When using this invention, firstly, select the installation method of the fire extinguisher according to the actual fire extinguishing needs. If vertical placement is required, place the fire extinguisher into the fixing cylinder 4 of the first fixing mechanism. The damping coating on the inner wall of the fixing cylinder 4 increases friction, and the double-layer structure achieves stable insulation and impact protection. If horizontal placement is required, place the fire extinguisher in the two fixing rings 6 at the top of the support rod 5 of the second fixing mechanism, and then tighten it with screws on the ear plate. After installation, connect the outlet of the fire extinguisher to the input end 11 of the quick-release mechanism through the air valve 17. At the same time, ensure that the mobile power supply 7, solenoid valve 8 and control module 9 in the control mechanism are connected through the power cord, and that the rheostat 10 between the mobile power supply 7 and the solenoid valve 8 is connected correctly. Next, place the fire hose 12 in the arc-shaped groove of the positioning block 13 and fix it with cable ties 14. Select the appropriate nozzle 16 according to the fire scene conditions. The threaded interface 15 is connected to the fire pipe 12. When the flame recognition module detects a flame in the target area and meets the preset trigger criteria, it automatically outputs an opening signal to the solenoid valve 8. The mobile power supply 7 supplies power to it, and the rheostat 10 can adjust the working state of the solenoid valve 8, thereby controlling the fire extinguisher switch to open automatically and realize the automatic spraying of the extinguishing agent. The extinguishing medium is sprayed from the nozzle 16 through the input end 11, the solenoid valve 8, and the fire pipe 12 to realize automatic fire extinguishing. When the flame signal disappears or remains below the set threshold for a certain period of time, the flame recognition module stops outputting the trigger signal, the solenoid valve 8 closes automatically, and the spraying stops. During the fire extinguishing process, the extinguishing range and spray pattern can be adjusted by changing different types of nozzles 16 according to the changes in the fire intensity to achieve the best fire extinguishing effect. If the extinguishing medium in the fire extinguisher is exhausted, the fire extinguisher can be quickly replaced through the valve 17 to ensure the continuous fire extinguishing work. The flame recognition module is electrically or signal-connected to the solenoid valve 8. The flame recognition module can be installed on a mobile platform or integrated into the front end of the insulated box 2 of the device body for real-time flame monitoring of the target area. The flame recognition module can detect flames based on optical images, infrared radiation, or ultraviolet / infrared spectral ratios. When a flame signal is detected that meets a preset criterion, an opening signal is automatically sent to the solenoid valve 8 to trigger the solenoid valve 8 to open. When the flame signal disappears or remains below a set threshold for a certain period of time, the trigger signal is automatically stopped, the solenoid valve 8 closes, and the spraying is terminated. The preset criterion can be set based on flame intensity, duration, or spectral characteristics to avoid false triggering.

[0020] Example 3: See Figure 8 The control module 9 is equipped with a perception and decision-making unit and an execution control unit. The perception and decision-making unit acquires multi-source data and preprocesses it to remove outliers; it inversely calculates the core temperature of the fire source based on the principle of thermal imaging, filters high-temperature pixel areas by setting a temperature threshold, and calculates the area or radius of the fire range by combining distance and sensor field of view parameters; at the same time, it uses the ratio of ultraviolet and infrared radiation intensity to determine whether the fire source is an open flame or smoldering, and determines the planar position of the fire source relative to the device through triangulation, and finally outputs four key characteristic parameters: fire source temperature, fire range, fire source type, and fire source location. The execution control unit dynamically adjusts the spraying strategy based on the fire characteristics output by the sensing unit; it controls the instantaneous spraying amount of extinguishing agent by adjusting the opening of the solenoid valve through the rheostat; at the same time, it monitors the changes in the fire range in real time, evaluates the extinguishing effect according to the combustion-inhibition kinetic equation, and dynamically adjusts the opening of the solenoid valve according to the real-time fire range to form a closed-loop control. A multi-sensor monitoring module is installed at the front end of the device, including an infrared temperature sensor, a flame sensor, a vision camera, and a laser rangefinder; the data acquired by each sensor is preprocessed; and corresponding sensors are equipped with... Multiple probes can acquire data simultaneously. One data point; Preprocessing: The collected data is sorted according to the collection time, and corresponding items collected at the same time are processed. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time; An infrared temperature sensor is essentially a "temperature camera" composed of countless pixels, each of which receives the intensity of infrared radiation from the heat source. Then the core temperature of the fire source , and These are the first and second radiation constants, respectively. Define the operating wavelength of the sensor; set a fire detection threshold. All temperatures The pixels are filtered out to form a heat source set. A pixel from any heat source set is selected, and its circumscribed circle is drawn. The radius of the smallest circumscribed circle is then chosen. Multiply the total number of pixels in the heat source set by the actual physical area corresponding to a single pixel. This gives the total area, i.e., the extent of the fire. ; Retrieve the straight-line distance to the fire source obtained from the laser rangefinder sensor. The horizontal physical size corresponding to a single pixel The vertical physical size corresponding to a single pixel , The horizontal field of view of the temperature sensor lens. The vertical field of view of the temperature sensor lens. and These represent the number of pixels in the horizontal and vertical directions of the temperature sensor imaging chip, respectively. ; The flame sensor converts the received light radiation into a voltage signal. ,like The presence of flames was determined. The preset threshold voltage is used for judgment; the raw signal output by the flame sensor is an analog voltage. The flame intensity value is then converted into a digital value via an ADC (analog-to-digital converter). , This is the reference voltage for the ADC; if the ratio of the ultraviolet to infrared radiation intensity of the fire source is... If so, the type of fire source is determined to be an open flame. This is the threshold for the spectral ratio. With radius Using the center of the smallest circumcircle as the center point, obtain the coordinates of the center point. and the intrinsic parameters of the laser rangefinder sensor , , , Calculate the horizontal azimuth angle using triangulation. In summary, using the current location's coordinates origin, the location of the fire source is determined to be... ; If the fire source is determined to be an open flame, use direct-fire or cone-shaped nozzles to concentrate the extinguishing agent and deliver it directly to the base of the fire; otherwise, use atomizing or diffuser nozzles to expand the coverage area and cool and penetrate the flames.

[0021] exist or When the fire was determined to be large, a mobile platform was used to rotate or swing and sweep the area to achieve wide coverage; or At that time, it was determined that the fire was small, so the sprinkler head was precisely positioned to cover the center of the fire source. and These are the preset fire range threshold and radius threshold, respectively; If the rate of temperature change A negative value indicates that the fire extinguishing was effective; if The shrinking size indicates effective control; and At that time, it was determined that the fire had been extinguished.

[0022] Extinguishing agent injection volume With solenoid valve opening Injection pressure satisfy: , For flow coefficient, This refers to the opening ratio of the solenoid valve. The effective flow area when the solenoid valve is fully open. Density of the extinguishing agent The pressure difference across the valve. Aperture ratio; ignore aperture ratio The impact, simplified to ,coefficient ; Fire range The time-dependent changes satisfy the combustion-inhibition kinetic equation: , This refers to the natural rate of fire spread. The extinguishing efficiency of the extinguishing agent. The instantaneous injection volume varies with the opening degree of the solenoid valve; When constant, for the formula Integrating both sides, we get , This represents the initial fire area. Duration of firefighting operations; This enables the execution control unit to adjust according to the real-time fire range. and injection pressure Perform solenoid valve opening ratio The adjustment.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic fire extinguishing device based on a mobile platform, comprising a base (1) and an insulated box (2) installed at the front end of the top of the base (1), characterized in that: The base (1) has a first fixing mechanism and a second fixing mechanism installed at the rear end of the top surface for vertical and horizontal placement of fire extinguishers. The heat insulation box (2) has a control mechanism installed inside for controlling the switch of the fire extinguisher. The base (1) has a quick-release mechanism installed on the top surface for controlling the fire extinguishing range. The quick-release mechanism is located at the front end of the heat insulation box (2). The control mechanism includes a control module (9) installed on the top surface of the base (1), and the control module (9) is equipped with a perception and decision unit and an execution control unit. The perception and decision-making unit acquires multi-source data and preprocesses it to remove outliers; it inversely calculates the core temperature of the fire source based on the principle of thermal imaging, filters high-temperature pixel areas by setting a temperature threshold, and calculates the area or radius of the fire range by combining distance and sensor field of view parameters; at the same time, it uses the ratio of ultraviolet and infrared radiation intensity to determine whether the fire source is an open flame or smoldering, and determines the planar position of the fire source relative to the device through triangulation, and finally outputs four key characteristic parameters: fire source temperature, fire range, fire source type, and fire source location. The execution control unit dynamically adjusts the spraying strategy based on the fire characteristics output by the sensing unit; it controls the instantaneous spraying amount of extinguishing agent by adjusting the opening of the solenoid valve through the rheostat; at the same time, it monitors the changes in the fire range in real time, evaluates the fire extinguishing effect according to the combustion-inhibition kinetic equation, and dynamically adjusts the opening of the solenoid valve according to the real-time fire range to form a closed-loop control.

2. The automatic fire extinguishing device based on a mobile platform according to claim 1, characterized in that: The data analysis steps for the perception and decision-making unit are as follows: M1: Acquires and preprocesses multi-source data, extracts fire characteristic parameters based on the preprocessed data: obtains the infrared radiation intensity of each pixel through an infrared temperature sensor. Inverting the core temperature of the fire source Set fire detection thresholds Screening temperature The pixels form a set of heat sources; M2: Retrieve the straight-line distance to the fire source obtained from the laser rangefinder sensor. The actual physical area of ​​a single pixel is calculated by combining the sensor's field of view parameters. Multiply by the total number of pixels in the heat source set Obtain the area of ​​the fire The threshold values ​​for the ratio of ultraviolet to infrared radiation intensity and the spectral ratio are obtained using a flame sensor. The type of fire source is determined by comparison, whether it is an open flame or smoldering; the coordinates of the center of the smallest circumcircle of the heat source set are used as the reference. Calculate azimuth angle using sensor intrinsic parameters The location of the fire source was determined to be... .

3. The automatic fire extinguishing device based on a mobile platform according to claim 2, characterized in that: The data analysis steps for the execution control unit are as follows: N1: Dynamically adjust the spraying strategy based on the fire characteristic parameters output by the sensing and decision-making unit: if the fire source is an open flame, select direct-fire or cone-shaped nozzles for concentrated fire suppression; if it is smoldering, select atomizing or diffusion nozzles for cooling and penetration; if the fire area... or radius Large-area coverage can be achieved through sweeping fire from mobile platforms; if or The nozzle is precisely positioned to cover the center of the fire source for targeted application. and These are the preset fire range threshold and radius threshold, respectively; N2: Adjust the opening ratio of the solenoid valve via a variable resistor. Controlling the instantaneous spray volume of extinguishing agent , A fixed coefficient; real-time monitoring of the fire's extent. The changes follow the combustion-inhibition kinetic equations. Evaluate the fire extinguishing effectiveness and obtain points. According to the real-time fire range With injection pressure Dynamically adjust the opening of the solenoid valve This forms a closed-loop control; when the temperature change rate And the range of the fire When the fire is reduced in size, the fire is considered extinguished effectively; when... And the flame sensor output voltage At that point, it was determined that the fire had been extinguished, and spraying was stopped.

4. The automatic fire extinguishing device based on a mobile platform according to claim 1, characterized in that: The first fixing mechanism includes a support seat (3) that is bolted to the top surface of the base (1). The top surface of the support seat (3) is fixed with a fixing cylinder (4) for vertically placing the fire extinguisher. The fixing cylinder (4) has a double-layer structure and the inner wall of the fixing cylinder (4) is coated with a damping coating.

5. An automatic fire extinguishing device based on a mobile platform according to claim 1, characterized in that: The second fixing mechanism includes a support rod (5) installed on the top surface of the base (1) by screws. Two symmetrical fixing rings (6) are installed at the top of the support rod (5). Ear plates are fixed to both ends of the two fixing rings (6), and the two ear plates are connected by screws.

6. An automatic fire extinguishing device based on a mobile platform according to claim 1, characterized in that: The control mechanism also includes a mobile power supply (7) and a solenoid valve (8) installed on the top surface of the base (1). The mobile power supply (7), the solenoid valve (8) and the control module (9) are all located inside the insulation box (2).

7. An automatic fire extinguishing device based on a mobile platform according to claim 6, characterized in that: The mobile power supply (7), the solenoid valve (8) and the control module (9) are connected by a power line, and a rheostat (10) is connected between the mobile power supply (7) and the solenoid valve (8).

8. An automatic fire extinguishing device based on a mobile platform according to claim 1, characterized in that: The quick-release mechanism includes an input end (11) connected to the rear end of the solenoid valve (8) and a fire pipe (12) connected to the front end of the solenoid valve (8). A positioning block (13) is installed on the top surface of the base (1) by screws. An arc-shaped groove for placing the fire pipe (12) is opened on the positioning block (13). A cable tie (14) for fixing the fire pipe (12) is installed on the positioning block (13). A threaded interface (15) is installed at the other end of the fire pipe (12). A nozzle (16) is threaded to the other end of the threaded interface (15). A valve (17) for connecting to a fire extinguisher is installed at the other end of the input end (11).

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