44 results about "Fire point" patented technology

The invention provides a forest disaster detection method and device, and belongs to the field of forest disaster monitoring, and the method comprises the steps: collecting an infrared image, a stereoscopic vision image and positioning data of a target forest region in real time; an ASSA module is introduced in the feature extraction stage of the YOLOv11, and an infrared image is input into the improved YOLOv11 for flame target recognition; recognizing the stereoscopic vision image through a smoke and fire recognition algorithm, and detecting flame and smoke targets; determining a fire detection result by combining the identification results of the flame target and the smoke target; under the condition that the fire disaster is determined to occur, an HITNet algorithm is adopted to carry out ignition point positioning through a stereoscopic vision image, and the geographic coordinates of a fire disaster point are determined based on positioning data; and sending alarm information based on the fire point geographic coordinates. Therefore, the capability of extracting the flame heat radiation characteristics of the tiny fire points is effectively enhanced, and the detection result of the forest fire is improved.

The invention discloses a dynamic fire extinguishing strategy generation method and system based on fire behavior development stage grading, belongs to the technical field of artificial intelligence, and aims to solve the problems of rapid fire behavior spreading and toxic and harmful flue gas retention in a fire disaster in a closed space of a multi-layer underground parking lot. The target tracking device firstly uses image identification to position a fire point, then uses the fire source detection device to collect a fire type and a fire behavior degree, and generates triple data; the data are input into a fire behavior stage grading model, and the fire behavior is divided into an incubation period, an accelerated spread period and a deflagration period according to a combustion entropy threshold value. According to the current stage, the corresponding fire extinguishing strategy is loaded from the blocking priority rule base, and in the detonation period, the aerogel flame retardant is only allowed to be put into the top ventilation opening in the fire diffusion direction. And then the fire scene control instruction drives the fire behavior blocking robot to release the flame retardant on time at a fixed point, and environment parameters after release are collected and fed back to the model. And if the combustion entropy value crosses the stage threshold value, the model triggers the blocking strategy to be dynamically switched.

The invention relates to the technical field of fire remote sensing application, and particularly discloses a method suitable for wind cloud satellite fire remote sensing application, and the method specifically comprises the following steps: 1, data preprocessing: obtaining wind cloud satellite fire original data, and carrying out the comprehensive preprocessing of the wind cloud satellite fire original data; step 2, identification model construction: based on radiation transmission and fire point spectral characteristics, establishing an identification model in combination with multi-spectral channel data; and inversion: inversing parameters of fire point temperature and area based on a thermal radiation transmission theory and multi-channel data. All-weather and high-time-efficiency fire monitoring is achieved, dynamic fire monitoring data are obtained in real time, the monitoring range is wide, the time frequency is high, the accuracy is high, the core area of a fire scene is accurately positioned through the hyperspectral monitoring technology, key data support is provided for rescue, and the rescue efficiency is improved. According to the recognition model, wind cloud satellite fire remote sensing is applied to fire dynamic monitoring and evaluation, fire emergency drilling, fire dynamic early warning and fire plan.

The invention relates to the technical field of artificial intelligence and fire monitoring, and provides an underground pipe gallery fire extinguishing method and system.The fire extinguishing method comprises the steps that a next behavior decision sequence is determined according to current fire behavior spreading information, current fire behavior information, the respective current fire extinguisher position of at least one target fire extinguisher and the current ignition point position of an ignition point; generating a next control instruction according to the next behavior decision sequence; a next behavior decision sequence is sent to the movable sliding rails where the at least one target fire extinguisher is located, and the next behavior decision sequence is used for controlling the movable sliding rails where the at least one target fire extinguisher is located to slide along the fixed rail according to the next driving parameter indicated by the next motion control parameter. And driving the at least one target fire extinguisher to slide, so that the at least one target fire extinguisher extinguishes the ignition point.

The invention relates to the technical field of forest fire emergency disposal, in particular to a helicopter-borne forest fire automatic identifying, positioning and extinguishing method and system. The method comprises the following steps: identifying infrared suspected fire points according to meteorological conditions and a space-time weight matrix; analyzing the probability of the open fire and the smoke by using the spectral response difference of the open fire and the smoke in different wavebands; generating a high-confidence three-dimensional fire point list based on a D-S evidence theory in combination with the infrared suspected fire point, the open fire and smoke probability, the combustion intensity and the live wire intensity; constructing a multi-objective optimization model, and solving a to-be-extinguished line and a region priority list in combination with the multi-objective optimization model, fire scene topographic feature parameters, fire line spreading features and the high-confidence three-dimensional fire point list; and generating or adjusting a flight route and a fire extinguishing instruction through a model prediction control framework based on a delivery window, the high-confidence three-dimensional fire point list and the to-be-extinguished line and area priority list.

The invention discloses a mechanical trigger type active fire extinguishing power distribution cabinet, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a cabinet body, a mounting rack and a clamping rail, the mounting rack comprises two vertical plates fixedly connected in the cabinet body and a plurality of transverse plates fixedly connected between the two vertical plates, and the clamping rail is mounted on the mounting rack through screws. The clamping rails are used for mounting electronic elements; the fire extinguisher is provided with an execution component, and the execution component is used for controlling the fire extinguisher to work; the lifting component is used for controlling the fire extinguisher to descend. The multiple sensing parts are arranged to correspond to the multiple areas of the mounting frame, real-time monitoring of the temperature conditions of all the areas is achieved, targeted fire extinguishing operation is achieved, gravitational potential energy is used as a power source, core actions such as lifting, translation and spraying triggering do not need electric power support, and even if a circuit is completely damaged due to a fire disaster, the fire extinguishing effect is good. And the fire extinguishing device can still accurately move to a fire point through a mechanical structure to complete fire extinguishing.

The present application relates to the technical field of forest fire emergency disposal, in particular to a helicopter-borne forest fire automatic identification positioning and extinguishing method and system. The method comprises the following steps: identifying infrared suspected fire points according to meteorological conditions and a space-time weight matrix; analyzing open fire and smoke probability by using the spectral response difference of open fire and smoke in different wave bands; generating a high-confidence three-dimensional fire point list based on D-S evidence theory in combination with the infrared suspected fire points, the open fire and smoke probability, and the burning intensity and fire line strength; constructing a multi-objective optimization model, and solving a to-be-extinguished fire line and a regional priority list in combination with the multi-objective optimization model, fire field terrain feature parameters, fire line spread characteristics, and the high-confidence three-dimensional fire point list; and generating or adjusting a flight route and an extinguishing instruction through a model predictive control framework based on a throwable window, the high-confidence three-dimensional fire point list, the to-be-extinguished fire line and regional priority list.

The utility model relates to the technical field of containers, and discloses a container built-in fire-fighting pipeline structure which comprises a box body frame, a fire-fighting spraying mechanism and a spraying adjusting mechanism, a groove is formed in the top of the box body frame, and a through hole is formed in the bottom in the groove of the box body frame. By arranging the fire-fighting spraying mechanism and the spraying adjusting mechanism, fire can be quickly extinguished through the sprayers arranged at all points in the box body frame under the condition that the fire occurs in the box body frame, the fire can be extinguished under the condition that the box door cannot be opened, the diffusion of dense smoke can be effectively reduced, and the fire extinguishing efficiency is improved. And through the spraying adjusting mechanism, the position of water sprayed by the spraying heads can be driven to be changed, so that the water sprayed by the multiple groups of spraying heads is aligned to the fire point position, the efficiency of extinguishing the fire point in the box body frame is improved, and the loss caused by goods is reduced.

The present application relates to lighter technical field, disclose a kind of ultra-thin fire gathering flat fire ignition system and ultra-thin lighter, including air outlet valve, tower pipe pressure cap, tower pipe, tower head, porcelain cup, porcelain cup;Tower head is shaped with the air outlet of downside opening, the upper end of tower head is shaped with taper portion, taper portion is shaped with multiple radial air outlet holes, the inner end of air outlet hole is communicated with air outlet;Porcelain cup upper shell is flat, the inside of porcelain cup upper shell is shaped with the waist type flat hole, the two side arc walls of waist type flat hole are inwardly inclined and set as inner "eight". By the waist type and conical setting of the inner hole of porcelain cup, the fire can be flat and gathered, and the fire can be linear and flat, which can increase the flame area. By replacing the existing multiple ignition mode with surface ignition mode, the consumption and waste of gas can be further reduced for larger diameter tobacco. The lighter using the ignition system can be ultra-thin, convenient to carry and improve the appearance.

The present application relates to the technical field of escape route analysis, and discloses a dynamic three-dimensional escape route generation method based on a fire point, comprising: acquiring temperature data, smoke data, train state data and a three-dimensional space structure in a target site in real time, analyzing the preprocessed temperature data, smoke data and train data to obtain three-dimensional coordinates of the fire point and a fire situation-train coupling risk factor, and the target site being a subway station; capturing flow field changes through a three-dimensional transient wind flow field intensity atlas, and finally constructing a dynamic risk avoidance traffic atlas and generating an escape route in combination with regional smoke condition adaptive weight values and exit dynamic evacuation efficiency values, wherein the route generation process is real-time adaptive to dynamic changes of the flow field, smoke and personnel distribution, which ensures route safety and also takes into account evacuation efficiency, and effectively avoids route failure caused by flow field or smoke mutation.

The present application relates to the technical field of monitoring or controlling charging stations, and in particular to a charging pile safety monitoring method and system, comprising the following steps: step 1, monitoring phase; step 2, primary feedback; step 3, traceability analysis phase, determining the fire point and the fire cause; step 3.1, on-site situation extraction; step 3.2, fire point analysis, based on image features, when the pixels in the image satisfy the condition of brightness L>L thresh and color in C range , the area where the pixels are located is determined as a suspected flame area F; the present application realizes accurate and comprehensive monitoring and safety warning through the real-time collection of data by multiple sensors in all directions. Through traceability analysis, the fire point and the cause can be quickly and clearly determined, and the responsibility can be defined. The primary feedback timely alarms and assists in judgment, and the secondary feedback is targeted based on the traceability results, the double feedback mechanism optimizes the emergency process, improves the user experience, and comprehensively safeguards the operation safety of the charging pile.

The application provides a fire point automatic identification method of an intelligent charging station, comprising: grouping each section according to thermal radiation intensity and measured thickness of a smoke layer, identifying an abnormal area of accumulated thickness of a vortex stagnation of a beam recess in each section; obtaining smoke layer deposition thickness distribution data, classifying thermal radiation intensity attenuation of the beam recess position according to the smoke layer deposition thickness distribution data, generating an attenuation distribution diagram, and identifying a potential fire point shielding area in a smoke exhaust path; according to the potential fire point shielding area, extracting a beam recess smoke layer shielding rate with a longer stagnation time from the smoke layer thickness distribution diagram, rechecking the smoke layer shielding rate in combination with the vortex stagnation time of the beam recess and the beam recess spacing, obtaining a rechecked thermal radiation intensity distribution sequence; and according to the rechecked thermal radiation intensity distribution sequence, iteratively updating thermal radiation attenuation characteristics along the slope under the influence of the ceiling slope angle, and determining a real fire point position coordinate under the smoke layer shielding.

The embodiment of the invention discloses a spraying fire extinguishing method and device, electronic equipment and a storage medium. The spraying fire extinguishing method comprises the steps that a real-time video of a target area is collected; performing smoke and fire identification on the real-time video based on a preset smoke and fire identification algorithm; when the real-time video is identified to have a smoke point or a fire point, sending the real-time video to an authorization platform; when fire alarm confirmation operation of the authorization platform for the real-time video is received, a control instruction is sent to a fire-fighting spraying system corresponding to the target area so as to control the fire-fighting spraying system to start a spraying head to extinguish fire in the target area, and the scheme can improve the fire extinguishing efficiency.

The utility model discloses a self-flame-retardant efficient fire-extinguishing adhesive tape sheet which comprises a flame-retardant adhesive tape sheet, a fire-extinguishing layer and a flame-retardant protective layer which are sequentially arranged from the bottom layer to the surface layer, flame-retardant materials are arranged in each layer structure, and the flame-retardant grade of the fire-extinguishing adhesive tape sheet is remarkably improved, so that each part of the fire-extinguishing adhesive tape sheet can be prevented from spontaneous combustion when a fire disaster occurs; and a flame-retardant effect can also be achieved. Wherein perfluorohexanone microbeads in the fire extinguishing layer are densely distributed in flame-retardant filling adhesive cement, after high-temperature wall breaking, gas rushes out along a crevasse and rapidly reaches a fire point, the effect of rapid fire extinguishing is achieved, the density of the perfluorohexanone microbeads is close to a saturated state, and the fire extinguishing efficiency is further improved.

The invention provides a magnesium alloy ignition point coupling judgment method and system under a flame condition, and belongs to the technical field of material performance testing. The method comprises the following steps: heating a magnesium alloy sample under a flame heating condition; driving a temperature measuring probe to penetrate into the sample at a preset moment so as to penetrate through a surface oxidation film of the sample, and obtaining the real temperature of the melt in the sample; and performing space-time coupling matching on the change of the real temperature and the visual information of the sample state so as to determine the ignition point of the magnesium alloy. The invention also provides a system for realizing the method. The system comprises a flame heating unit, a dynamic temperature measurement unit and a signal acquisition and judgment unit. The real temperature of the melt is obtained by dynamically puncturing the oxide film, so that the problem of temperature measurement distortion caused by heat insulation of the oxide film is fundamentally solved; and in combination with a time-space coupling judgment criterion of temperature jump and combustion expansion behaviors, dual confirmation of the ignition point is realized, interference is effectively eliminated, and accuracy, reliability and repeatability of ignition point data are ensured.

The invention relates to the field of photovoltaic fire monitoring, and discloses a roof distributed photovoltaic power generation fire monitoring and early warning method, which comprises the following steps: acquiring infrared radiation data in each monitoring area in real time through a thermal imaging camera deployed in the monitoring area, identifying an abnormal thermal event in the monitoring area, and sending the abnormal thermal event to the monitoring area; generating an equipment fault warning signal and a suspected fire point mark, controlling a thermal imaging camera to perform fire point positioning scanning on a corresponding area through a holder, and then performing ignition point judgment; according to the invention, by dividing the monitoring area and setting dual criteria of the temperature threshold and the fire source feature, the system executes two sets of analysis logics of equipment fault early warning and fire detection in parallel, and when the temperature of the monitoring area exceeds the heat-resistant threshold of the equipment, fault warning is triggered; and when a high-temperature area conforming to the morphological characteristics of the fire source appears in the thermal image, the high-temperature area is marked as a suspected fire point, so that the labor division mechanism not only ensures the sensitive perception of local faults of the component, but also reduces the false alarm rate of ambient temperature fluctuation.

The utility model provides an automatic fire-fighting device for a wind power fan, which comprises a fan motor and a temperature monitoring module, the temperature monitoring module is mounted on the surface of the fan motor, the output end of the temperature monitoring module is unidirectionally connected with a host, the output end of the host is unidirectionally connected with a water valve, and the water valve is mounted on a water supply pipe passage. The water mist spraying device has the advantages that water mist is sprayed towards a fire point or the root of a flame, and the conical water mist is wide in coverage area and can go deep into a fire source to quickly reduce the temperature of the fire point and restrain fire spreading. And meanwhile, the carbon dioxide jet head jets linear carbon dioxide airflow to surround the fan motor to form an effective isolation barrier to prevent external oxygen from entering the fire scene, so that a combustion chain is cut off, and continuous combustion of a fire point is prevented. And external oxygen is effectively isolated to prevent continuous combustion of a fire point, so that fire extinguishing of the fire point of the motor is well and quickly realized.

This invention relates to the field of water cannon technology and discloses a housing. The housing is embedded in the ceiling and flush with the ceiling finish. An infrared thermal imaging scanner is used to measure the coordinates of the heat source and the area covered by open flame in the monitored area in real time and transmit the information to the main control chip. The housing is equipped with a lifting component, a rotating dual-water-path spray component, and a water outlet delay component. The lifting component is used to drive the rotating dual-water-path spray component to move up and down in the vertical direction. The rotating dual-water-path spray component has two working modes: single-point direct fire extinguishing and direct fire + ring spray composite fire extinguishing. The main control chip adjusts the fire extinguishing mode of the dual-water-path spray component according to the number of fire points and the area covered by open flame. The water outlet delay component is connected to the dual-water-path spray component and supplies water only when the dual-water-path spray component uses the composite fire extinguishing mode. The water outlet delay component is used to control the release of spray water and extend the release time.

The invention discloses a spherical screen building fire fighting system and method based on fire perception and intelligent smoke exhaust. The method is used in fire-fighting technical field. The method comprises the following steps: carrying out smoke detection on a large-range space through the linear light beam smoke detector, and generating a fire alarm signal; the control module receives the fire alarm signal; according to the alarm signal, a corresponding fire extinguishing device in the fire extinguishing execution module is started in a linkage mode; the automatic tracking and positioning jet fire extinguishing device responds to a starting instruction, positions a fire point and sprays water to extinguish fire; when the environment temperature reaches a preset temperature sensing contact, the superfine dry powder fire extinguishing hanging ball triggers and releases the superfine dry powder fire extinguishing agent.

The invention provides a fire detection and positioning embedded system in a high and large space and a method thereof. The method comprises the steps that a first image sensor and a second image sensor collect video streams of a surrounding environment in real time; the first image processing module converts a received video stream to generate first binocular image data; the second image processing module corrects the first binocular image data through a calibration method to obtain second binocular image data; the fire extinguishing module starts a fire extinguishing mechanism according to the spatial three-dimensional coordinates of the fire points; the fire point display module displays the image information around the fire point in real time according to the coordinates of the fire point, and the embedded system for flame target positioning in the tall and large space can accurately and efficiently recognize and position flames in the tall and large space, so that serious loss caused by fire disasters is effectively prevented.

The invention discloses a daily-scale urban industrial heat value evaluation method, device and equipment and a medium, and the method comprises the steps: obtaining a plurality of industrial heat source regions based on a to-be-evaluated target range in preset time, and setting the preset time as reference time and evaluation time; establishing an evaluation strategy model of the plurality of industrial heat source areas based on the sum of fire point radiation power within the reference time, the sum of fire point radiation power within the evaluation time and the number of days of fire point occurrence of each industrial heat source; and evaluating fire point radiation power FRP values of one or more industrial heat sources in one or more cities under the daily scale according to the evaluation strategy model. According to the method, the daily-scale urban industrial production activity evaluation method is established based on the night thermal abnormal point remote sensing data, the urban industrial heat source enterprises are identified and the evaluation strategy factors of the evaluation strategy model, support is provided for urban industrial production activity monitoring and industrial production emission management, and the limitation on the time scale in a traditional method is made up.

1. The name of the design product: fire alarm control device for energy storage power station. 2. The use of the design product: the design product is used for detecting fire and detecting the location of the fire point, and controlling the spraying of fire extinguishing agent. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention belongs to the field of fire fighting, and particularly relates to a method for positioning fire in a tunnel based on overlapped view fields of front and rear cameras and a fire fighting system. According to the scheme, a group of thermal infrared cameras arranged at the head end and the tail end of each section of a tunnel are used for collecting thermal infrared video streams, and framing images of the video streams are input into a flame detection model for fire point recognition and segmentation. After flames are detected, extracting flame areas synchronously recognized in the two images and coordinate information of central points of the flame areas, and determining real coordinates of the fire points according to relative positions of the fire points in the images in a geometric inversion mode; the obtained fire point position information can assist a tunnel fire-fighting system to realize linkage control of spraying equipment, fan equipment, sound-light alarm equipment, broadcasting equipment and the like, so that early discovery, real-time sensing, accurate positioning and automatic response of fire points in a tunnel are realized. According to the invention, the problems of recognition lag and difficult positioning in the existing in-tunnel fire monitoring scheme are solved.

The invention discloses a small-flame critical low-temperature adjustment and repair operation method for a stainless steel vehicle body of a railway vehicle, which comprises the following steps of: performing critical-temperature low-temperature point-to-point adjustment and repair on an adjustment and repair position by using a flame spray gun and adopting small flame, and then finishing integral adjustment and repair from point to surface; the method comprises the steps that 1, the contact distance between flame of a flame spray gun and a to-be-adjusted stainless steel plate is controlled, and the outer flame position of the flame tip makes contact with the stainless steel plate; 2, observing the color change of the heated stainless steel plate, measuring the temperature by matching with a temperature measuring gun, and controlling the temperature value to be 300-360 DEG C; step 3, a wooden hammer is used for slightly hitting, the hitting is uniform, the force is not too strong, hitting is carried out from the periphery of the baking point to the center of the baking point, and the hitting mode adopts multi-point hitting on the circumference; 4, after the step 3 is completed, watering and chilling are conducted immediately, water is directly poured to the position of a warming point, and the temperature of the center of the stainless steel plate is drastically reduced; and 5, the fire points are adjusted and repaired to be distributed from the center fire point of the protrusion to the periphery in a radial shape till the flatness of the bulge of the stainless steel plate meets the technological requirement.

The invention relates to the technical field of escape route analysis, and discloses a fire point-based dynamic three-dimensional escape route generation method, which comprises the following steps of: acquiring temperature data, smoke data, train state data and a three-dimensional space structure in a target place in real time, analyzing the preprocessed temperature data, smoke data and train data, and generating a fire point-based dynamic three-dimensional escape route; the three-dimensional coordinates of a fire point and a fire-train coupling risk factor are obtained, and the target place is a subway station; flow field changes are captured through a three-dimensional transient air flow field intensity map, finally, a dynamic risk avoiding passing map is constructed, an escape route is generated in combination with a regional smoke condition adaptation weight value and an exit dynamic evacuation efficiency value, the route generation process adapts to dynamic changes of the flow field, smoke and personnel distribution in real time, route safety is ensured, evacuation efficiency is also considered, and the evacuation efficiency is improved. And route failure caused by sudden change of a flow field or smoke is effectively avoided.

The utility model discloses a fire point monitoring camera, and specifically relates to the fire point monitoring camera technology field, the fire point monitoring camera comprises a housing, two sides of the housing are symmetrically provided with guide housings, the guide housings are provided with communication cavities, the housing is provided with a notch, two sides of the notch are symmetrically provided with communication grooves, and the communication grooves are communicated with the communication cavities. The groove opening is communicated with the communicating cavity through the communicating groove, a collecting box is arranged on the back face of the shell, a containing groove is formed in the collecting box, and the containing groove is communicated with the communicating cavity. According to the fire point monitoring camera provided by the utility model, smoke is absorbed through the guide shells at the two sides of the shell, the smoke is transmitted through the communicating cavities in the guide shells, the camera is mounted through the notch in the shell, and the notch and the communicating grooves are communicated through the communicating grooves at the two sides of the notch; and the smoke is transferred into a placement groove in the back of the shell, and the smoke is collected.

The invention discloses a fire radiation power open-air straw combustion emission calculation method and a related device, and relates to the technical field of atmospheric pollutant emission monitoring, and the method comprises the steps: obtaining multi-source remote sensing data; performing fire point fusion, space-time clustering and platform attribution judgment processing on the multi-source remote sensing data to generate a fire point data set with a unified reference; based on the fire point data set, fire radiation energy is calculated through a fire radiation energy calculation method, and a fire radiation energy data set is obtained; according to the fire radiation energy data set, calculating the pollutant discharge amount, and obtaining the discharge amount of various pollutants of each fire point; and according to the discharge amount of various pollutants of each fire point, pollutant discharge amount space distribution is carried out, and a grid-level pollutant discharge space distribution result is output. According to the invention, large-range real-time monitoring can be realized, and the precision and efficiency of open-air straw combustion emission amount accounting can be improved.

This invention discloses a method for precise tracking of fire ignition points based on distributed optical fibers, specifically relating to the field of fire monitoring and safety early warning technology. The method involves acquiring the initial temperature distribution sequence along the optical fiber and periodically collecting temperature data during monitoring. Temperature anomaly segments are identified based on the temperature increment distribution, and the temperature rise gradient characteristics and spatial diffusion width characteristics of these anomaly segments are extracted. The asymmetric temperature rise gradient coefficient and thermal diffusion offset index are calculated to construct an anomaly feature set. A thermal diffusion evolution model is constructed based on this feature set, and reverse heat source fitting calculations are performed on the temperature anomaly segments to obtain a set of candidate ignition point locations. Trajectory correlation analysis is conducted on the candidate ignition point locations at multiple consecutive time points, and the point with the smallest spatial drift and continuously increasing temperature rise is selected as the target ignition point. This invention can effectively suppress positioning deviations caused by thermal diffusion and environmental disturbances, achieving precise identification and dynamic tracking of early fire source locations in complex environments.

The invention discloses charging pile monitoring equipment and a monitoring method, and relates to the technical field of charging piles, and the charging pile monitoring equipment is technically characterized by comprising a pre-buried bottom frame, a dry powder box and a vertical rod, the dry powder box is installed behind the pre-buried bottom frame, the vertical rod is installed above the dry powder box, and a fire extinguishing driving mechanism is arranged above the vertical rod; the fire extinguishing driving mechanism comprises a top cross rod, side sliding grooves and a moving frame, and the side sliding grooves are formed in the left side and the right side of the top cross rod correspondingly. The technical effects that by arranging the fire extinguishing driving mechanism, when a fire breaks out in the vehicle charging process, the position of the dry powder spray head can be flexibly adjusted, dry powder is aligned with a fire point, and therefore the fire point of the vehicle is accurately extinguished; accurate alignment of a fire point means that the dry powder can directly act on a fire source, flames are rapidly extinguished, the fire extinguishing time is shortened, and accurate fire extinguishing can reduce the influence on non-fire parts of the vehicle to the maximum extent and reduce extra damage to the vehicle due to fire extinguishing action.