Intelligent vehicle fire prevention and control method and system and storage medium

Abstract

The invention discloses an intelligent vehicle fire prevention and control method and system and a storage medium, and belongs to the technical field of vehicle safety, and the method comprises the steps: obtaining a periodic thermodynamic diagram of a target area, receiving the thermodynamic diagram, converting the thermodynamic diagram into a temperature matrix, generating a fire signal of the target area according to the temperature matrix, and sending the fire signal to a server; cutting off a main power supply of the vehicle according to the fire signal, starting an independent power supply module to supply power, and generating an alarm signal corresponding to a fire behavior grade and a first fire extinguishing instruction for starting a fire extinguishing packet closest to an ignition point to extinguish fire for the first time; and if the alarm signal is still received within the preset time after the first fire extinguishing, a second fire extinguishing instruction is started for starting all the fire extinguishing bags around the ignition point to perform second fire extinguishing. According to the invention, information of a target area can be sensed in real time, fire behavior and danger can be found as soon as possible, and intelligent fire prevention and control can be realized through unified management of the main controller.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle safety technology, and in particular relates to a vehicle fire intelligent prevention and control method, system and storage medium. Background Art

[0002] After long-term use, vehicles may experience electrical failures, oil leakage and other problems that can easily cause fires. The current fire detection method is to install a fire detection system in the vehicle. When the smoke detection probe detects smoke, the alarm information is transmitted to the smoke detection host to alarm. However, the smoke detection probe requires a certain amount of installation space and the installation position is limited. It is generally suitable for installation in a fixed area inside the vehicle. The fire detection range of the probe installation position is limited, and it cannot detect areas that are not covered by the smoke detection probe. Moreover, the probe cannot be installed in a smaller space inside the vehicle, nor is it suitable for installation in a bare environment under the vehicle. There are situations where some key parts cannot detect fire.

[0003] In addition, traditional vehicle fire prevention and control solutions have the following defects:

[0004] Response lag: Smoke detectors cannot locate the source of fire and are susceptible to environmental interference;

[0005] Passive prevention and control: Lack of active fire extinguishing capabilities. Existing fire extinguishing devices rely on manual triggering or single temperature threshold control.

[0006] Power supply dependency: The system is completely dependent on the vehicle's main power supply and may be paralyzed if a fire causes a short circuit;

[0007] Data tracing is difficult: local storage is easily damaged, and cloud data cannot be synchronized when the network is disconnected, which makes subsequent accident cause investigation and subsequent prevention difficult. Summary of the Invention

[0008] The technical problem to be solved by the present invention is: how to achieve intelligent prevention and control of vehicle fires, improve the active fire extinguishing capability of the system, and enhance the safety of vehicles.

[0009] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0010] In a first aspect, the present invention provides a method for intelligently preventing and controlling vehicle fires, comprising the following steps:

[0011] Obtain a periodic thermal map of the target area, receive the thermal map and convert it into a temperature matrix, and generate a fire signal of the target area according to the temperature matrix, wherein the fire signal includes: fire level and fire point location information;

[0012] According to the fire signal, the vehicle's main power supply is cut off and the independent power supply module is activated to supply power, and an alarm signal corresponding to the fire level and a first fire extinguishing instruction are generated, which are used to activate the fire extinguishing package closest to the fire point for the first fire extinguishing;

[0013] If an alarm signal is still received within the preset time after the first fire extinguishing, the second fire extinguishing instruction will be activated to activate all fire extinguishing packages around the fire point for a second fire extinguishing; otherwise, it indicates that the fire risk has been eliminated.

[0014] The method for generating a fire signal in a target area is as follows: calculating the maximum temperature in the area, the temperature rise rate in a continuous temperature sampling period, and the temperature difference between adjacent areas based on a temperature matrix; and determining the fire level and confirming the ignition point location information based on the maximum temperature in the area, the temperature rise rate in a continuous temperature sampling period, and the temperature difference between adjacent areas.

[0015] The method for judging the fire level includes:

[0016] When 80℃≤Tmax<150℃, and ΔT neighbor ≥5℃: mild fire;

[0017] When 150℃≤Tmax<300℃, and ΔT / Δt≥10℃ / s: moderate fire;

[0018] When Tmax ≥ 300℃: severe fire;

[0019] Where Tmax is the maximum temperature in the area, ΔT / Δt is the temperature rise rate during the continuous temperature sampling period, and ΔT neighbor is the temperature difference between adjacent areas.

[0020] The alarm signal includes:

[0021] In the case of a minor fire: When the vehicle is stationary and unattended, the APP pushes an alarm signal; when the vehicle is in motion, the instrument panel displays a minor fire information and reminds you to drive carefully;

[0022] Moderate fire: When the vehicle is stationary and unattended, an additional SMS notification will be sent. While the vehicle is in motion, the dashboard will display a moderate fire message and remind the driver to pull over for a safety check and fire extinguishing.

[0023] In the event of a severe fire: when the vehicle is stationary and unattended, an audible and visual alarm is triggered and the rescue platform is automatically contacted; while the vehicle is in motion, the instrument panel displays a severe fire and reminds the driver to pull over for a safety check and fire extinguishing operation.

[0024] The fire signal also includes confidence information, which is used to reduce the probability of misjudgment of the fire situation. The method for obtaining the confidence information includes the following steps:

[0025] Set the basic confidence level of the fire signal and modify it: calculate the fire level of two consecutive cycles. If the calculation results are consistent, modify the basic confidence level by increasing the preset value as the new confidence level; if the calculation results are inconsistent, the confidence level remains the original basic confidence level.

[0026] Repeat the above basic confidence correction method. When the corrected confidence reaches the set threshold, it indicates that the fire situation judgment is accurate, and the confidence information at this time is output.

[0027] When the vehicle is in normal condition, the main power supply of the vehicle is float charged by the independent power supply module; in the event of a fire, the main controller controls the solid-state relay to switch between the main power supply of the vehicle and the independent power supply module.

[0028] When the fire level is light: the independent power supply module outputs a single voltage of 12V;

[0029] When the fire level is moderate or severe: the independent power supply module outputs 12V-24V dual voltage.

[0030] In a second aspect, the present invention provides a vehicle fire intelligent prevention and control system, comprising:

[0031] Thermal imaging detection module, used to obtain vehicle thermal image data in real time and transmit it in real time;

[0032] a data processing module, receiving the thermal map and converting it into a temperature matrix, generating a fire signal according to the temperature matrix, and sending the fire signal to a main controller;

[0033] The main controller analyzes the fire signal and generates the corresponding control signal, activates the alarm module and the fire extinguishing module according to the control signal, and sends the received fire signal to the data storage module for storage;

[0034] The independent power supply module is used to supply power to various modules of the vehicle fire intelligent prevention and control system in the event of a fire.

[0035] The fire signal is stored in the data storage module in real time and uploaded to the cloud at the same time.

[0036] The fire extinguishing module includes a plurality of fire extinguishing packages, which are controlled to start up through electromagnetic valves and spray in a directional manner toward the fire point.

[0037] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-mentioned vehicle fire intelligent prevention and control method.

[0038] In a fourth aspect, the present invention provides a computer program product, comprising a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned vehicle fire intelligent prevention and control method.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] Thermal imaging technology is used to monitor fire conditions in real time and accurately locate them. Combined with an independent power supply, the system ensures continued operation after power outages, triggering graded alarms and targeted fire extinguishing. The system utilizes a local-cloud dual storage architecture, supports fire extinguishing effect feedback and remote monitoring of power status, significantly improving emergency response capabilities and accident tracing efficiency in complex fire environments. A confidence optimization process is added to fire signals to reduce the probability of misjudgment. The intelligent vehicle fire prevention and control method of the present invention enables all-weather fire detection and automated fire handling, greatly improving vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Flowchart of fire level determination and alarm signal of the present invention;

[0042] Figure 2 A structural block diagram of the vehicle fire intelligent prevention and control system of the present invention;

[0043] Figure 3 The calculation flow chart of the fire signal of the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] Example 1

[0046] refer to Figure 1-Figure 3 As shown, a vehicle fire intelligent prevention and control method includes the following steps:

[0047] Obtain a periodic thermal map of the target area, receive the thermal map and convert it into a temperature matrix, and generate a fire signal of the target area according to the temperature matrix, wherein the fire signal includes: fire level and fire point location information;

[0048] According to the fire signal, the vehicle's main power supply is cut off and the independent power supply module is activated to supply power, and an alarm signal corresponding to the fire level and a first fire extinguishing instruction are generated, which are used to activate the fire extinguishing package closest to the fire point for the first fire extinguishing;

[0049] If an alarm signal is still received within the preset time after the first fire extinguishing, the second fire extinguishing instruction will be activated to activate all fire extinguishing packages around the fire point for a second fire extinguishing; otherwise, it indicates that the fire risk has been eliminated.

[0050] Fire signals and related data are stored in the data storage module in real time and uploaded to the cloud.

[0051] Methods for determining fire signals in target areas include:

[0052] The data processing module obtains the temperature matrix of the target area in real time, and calculates the maximum temperature Tmax in the area, the temperature rise rate ΔT / Δt of the continuous temperature sampling period, and the temperature difference between adjacent areas based on the temperature matrix.

[0053] The temperature rise rate can be calculated by the temperature matrix difference between the current sampling period and the previous sampling period.

[0054] The temperature difference between adjacent areas is calculated using the Sobel operator or gradient method to detect the temperature mutation area; the coordinates corresponding to the highest temperature point in the temperature mutation area are the ignition point location.

[0055] Fire levels are classified according to the calculation results:

[0056] Mild fire (80℃≤Tmax<150℃, and ΔT neighbor ≥5℃): Local temperature rise, no diffusion;

[0057] Moderate fire (150℃≤Tmax<300℃, and ΔT / Δt≥10℃ / s): risk of fire spread;

[0058] Severe fire (Tmax ≥ 300℃): characteristics of open flames, with risk of deflagration;

[0059] No fire (other conditions): No fire risk.

[0060] The alarm signals corresponding to the fire level include:

[0061] Minor fire: When the vehicle is stationary and unattended, the app pushes an alarm signal; when the vehicle is in motion, the instrument panel displays a minor fire message and reminds drivers to drive carefully.

[0062] Moderate fire: When the vehicle is stationary and unattended, an additional SMS notification will be sent. When the vehicle is in motion, the dashboard will display a moderate fire and remind you to pull over for a safety check and fire extinguishing.

[0063] Severe fire: When the vehicle is stationary and unattended, an audible and visual alarm (95dB buzzer + 2Hz strobe light) is triggered and the rescue platform is automatically contacted. While the vehicle is in motion, the instrument panel displays a severe fire indication and reminds drivers to pull over for a safety check and fire extinguishing.

[0064] No alarm signal is generated when there is no fire.

[0065] To reduce the probability of misjudgment, confidence optimization is added to the fire judgment process. The basic confidence of the fire signal is set and revised: the fire level of two consecutive cycles is calculated. If the calculation results are consistent, the basic confidence is revised and the basic confidence is increased by a preset increase value, 20%, as the new confidence; if the calculation results are inconsistent, the confidence remains the original basic confidence.

[0066] Repeat the above basic confidence correction method. When the corrected confidence reaches the set threshold, it indicates that the fire situation judgment is accurate. The confidence information at this time is output, and the system starts to run the subsequent fire extinguishing and alarm procedures.

[0067] When the vehicle is in normal condition, the main power supply of the vehicle is float charged by the independent power supply module; in the event of a fire, the main controller controls the solid-state relay to switch between the main power supply of the vehicle and the independent power supply module.

[0068] When the fire level is light: the independent power supply module outputs a single voltage of 12V;

[0069] When the fire level is moderate or severe: the independent power supply module outputs 12V-24V dual voltage.

[0070] The vehicle fire intelligent prevention and control method described in the present invention can perceive the information of the target area in real time, discover fire conditions and fire risks early, and realize intelligent prevention and control and accident handling through unified management by the main controller. The independent power supply better ensures the normal operation of the system, and the fire classification can realize more refined fire prevention and control.

[0071] Example 2

[0072] refer to Figure 2 As shown, a vehicle fire intelligent prevention and control system includes: a thermal imaging detection module: including several infrared cameras deployed at various positions of the vehicle, which are used to obtain real-time thermal map data of the vehicle. The infrared cameras in this embodiment have a resolution of ≥ 320×240, a frame rate of 9Hz, and a temperature measurement range of -20℃~550℃).

[0073] Data processing module: Receives the thermal map generated by the thermal imaging detection module and converts it into a temperature matrix. It then identifies abnormal temperature rise based on the temperature matrix, classifies the fire level, locates the fire point, generates a corresponding fire signal, and sends the fire signal to the main controller.

[0074] Main controller: Analyzes the fire signal and generates corresponding control signals, activates the alarm module and the fire extinguishing module according to the control signals, and sends the received fire signal to the data storage module for storage;

[0075] Alarm module: receives the control signal from the main controller and generates the corresponding alarm signal;

[0076] Fire extinguishing module: It includes a fire extinguishing package array composed of several fire extinguishing packages. According to the control signal of the main controller, the fire extinguishing package closest to the fire point or all the fire extinguishing packages near the fire point are activated. The fire extinguishing package is a suspended ultra-fine dry powder. The fire extinguishing package is controlled by a solenoid valve to start and spray in a directional manner towards the fire point. The response time is less than 0.1 seconds.

[0077] Independent power supply module: When a fire is confirmed, the vehicle's main power supply is cut off, and the independent power supply module supplies power to the intelligent fire prevention and control system. The voltage mode is switched according to the fire level. In a mild fire, a single 12V voltage is output; in a moderate / severe fire, a dual voltage of 12V+24V is output, and dynamic load distribution is performed. The power supply priority is shown in the following table. In normal operation without a fire, the vehicle's main power supply is float charging of the independent power supply module. The independent power supply module is a lithium iron phosphate battery pack enclosed in a fireproof metal compartment. The main power supply is cut off within 0.2 seconds after the fire is triggered, and the independent power supply has a battery life of ≥30 minutes.

[0078] After the fire signal is triggered, the main controller controls the solid-state relay (SSR) to complete the main power cut-off and independent power switching within 0.2 seconds.

[0079] Data Storage Module: This module supports both local and cloud storage, ensuring data integrity and facilitating accident tracing. The data storage module uses industrial-grade TF cards with a 30-day coverage cycle to ensure data integrity during network outages. Cloud storage supports data backtracking for more than five years. Local storage ensures data integrity during network outages, and cloud storage can be used for cross-vehicle data aggregation and fire hazard prediction.

[0080] The vehicle power is cut off by controlling the fire level, eliminating the risk of system short circuit and reducing the possibility of secondary accidents. The main power supply and independent power supply modules are switched seamlessly to ensure the normal operation of the intelligent prevention and control system.

[0081] Based on the positioning results of the thermal imaging detection module, the fire extinguishing package in the corresponding area is accurately activated to reduce the consumption of fire extinguishing agent, and the fire extinguishing effect is continuously monitored to improve the success rate of fire extinguishing through the secondary fire extinguishing strategy.

[0082] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned vehicle fire intelligent prevention and control method.

[0083] Example 4

[0084] A computer program product includes a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned vehicle fire intelligent prevention and control method.

[0085] In summary, the present invention uses thermal imaging technology to monitor fire conditions in real time and accurately locate them, combined with an independent power supply to ensure that the system continues to operate after a power outage, triggering graded alarms and directional fire extinguishing. The system adopts a local-cloud dual storage architecture, supports fire extinguishing effect feedback and remote monitoring of power status, significantly improving emergency response capabilities and accident tracing efficiency in complex fire environments. A confidence optimization process is added to the fire signal to reduce the probability of misjudgment. The intelligent vehicle fire prevention and control method of the present invention can realize all-weather fire detection, realize automated fire handling, greatly enhance active fire extinguishing capabilities, achieve full closed-loop fire prevention and control, and greatly improve vehicle safety.

[0086] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle fire intelligent prevention and control method, characterized in that: The steps include: Obtain a periodic thermal map of the target area, receive the thermal map and convert it into a temperature matrix, and generate a fire signal of the target area according to the temperature matrix, wherein the fire signal includes: fire level and fire point location information; According to the fire signal, the vehicle's main power supply is cut off and the independent power supply module is activated to supply power, and an alarm signal corresponding to the fire level and a first fire extinguishing instruction are generated, which are used to activate the fire extinguishing package closest to the fire point for the first fire extinguishing; If an alarm signal is still received within the preset time after the first fire extinguishing, the second fire extinguishing instruction will be activated to activate all fire extinguishing packages around the fire point for a second fire extinguishing; otherwise, it indicates that the fire risk has been eliminated.

2. The vehicle fire intelligent prevention and control method according to claim 1, characterized in that: The method for generating a fire signal in a target area is as follows: calculating the maximum temperature in the area, the temperature rise rate in a continuous temperature sampling period, and the temperature difference between adjacent areas based on a temperature matrix; and determining the fire level and confirming the ignition point location information based on the maximum temperature in the area, the temperature rise rate in a continuous temperature sampling period, and the temperature difference between adjacent areas.

3. The vehicle fire intelligent prevention and control method according to claim 2, characterized in that: The method for judging the fire level includes: When 80℃≤Tmax<150℃, and ΔT neighbor ≥5℃: mild fire; When 150℃≤Tmax<300℃, and ΔT / Δt≥10℃ / s: moderate fire; When Tmax ≥ 300℃: severe fire; Where Tmax is the maximum temperature in the area, ΔT / Δt is the temperature rise rate during the continuous temperature sampling period, and ΔT neighbor is the temperature difference between adjacent areas.

4. The vehicle fire intelligent prevention and control method according to claim 1, characterized in that: The alarm signal includes: In the case of a minor fire: When the vehicle is stationary and unattended, the APP pushes an alarm signal; when the vehicle is in motion, the instrument panel displays a minor fire information and reminds you to drive carefully; Moderate fire: When the vehicle is stationary and unattended, an additional SMS notification will be sent. While the vehicle is in motion, the dashboard will display a moderate fire message and remind the driver to pull over for a safety check and fire extinguishing. In the event of a severe fire: when the vehicle is stationary and unattended, an audible and visual alarm is triggered and the rescue platform is automatically contacted; while the vehicle is in motion, the instrument panel displays a severe fire and reminds the driver to pull over for a safety check and fire extinguishing operation.

5. The vehicle fire intelligent prevention and control method according to claim 1, characterized in that: The fire signal also includes confidence information, which is used to reduce the probability of misjudgment of the fire situation. The method for obtaining the confidence information includes the following steps: Set the basic confidence level of the fire signal and modify it: calculate the fire level of two consecutive cycles. If the calculation results are consistent, modify the basic confidence level and increase it by the preset value as the new confidence level. If the calculation results are inconsistent, the confidence level will be the original basic confidence level; Repeat the above basic confidence correction method. When the corrected confidence reaches the set threshold, it indicates that the fire situation judgment is accurate, and the confidence information at this time is output.

6. The vehicle fire intelligent prevention and control method according to claim 1, characterized in that: When the vehicle is in normal condition, the main power supply of the vehicle is float charged by the independent power supply module; in the event of a fire, the main controller controls the solid-state relay to switch between the main power supply of the vehicle and the independent power supply module.

7. The vehicle fire intelligent prevention and control method according to claim 1, characterized in that: When the fire level is light: the independent power supply module outputs a single voltage of 12V; When the fire level is moderate or severe: the independent power supply module outputs 12V-24V dual voltage.

8. A vehicle fire intelligent prevention and control system, based on the method according to any one of claims 1 to 7, characterized in that: include: Thermal imaging detection module, used to obtain vehicle thermal image data in real time and transmit it in real time; a data processing module, receiving the thermal map and converting it into a temperature matrix, generating a fire signal according to the temperature matrix, and sending the fire signal to a main controller; The main controller analyzes the fire signal and generates the corresponding control signal, activates the alarm module and the fire extinguishing module according to the control signal, and sends the received fire signal to the data storage module for storage; The independent power supply module is used to supply power to various modules of the vehicle fire intelligent prevention and control system in the event of a fire.

9. The vehicle fire intelligent prevention and control method according to claim 8, characterized in that: The fire signal is stored in the data storage module in real time and uploaded to the cloud.

10. The vehicle fire intelligent prevention and control system according to claim 8, characterized in that: The fire extinguishing module includes a plurality of fire extinguishing packages, which are controlled to start up through electromagnetic valves and spray in a directional manner toward the fire point.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the vehicle fire intelligent prevention and control method according to any one of claims 1 to 7 are implemented.

12. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the steps of the vehicle fire intelligent prevention and control method described in any one of claims 1 to 7 are implemented.

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