Mountain forest fire prevention communication networking method and system

Abstract

The invention discloses a mountain forest fire prevention communication networking method and system, and belongs to the technical field of networking communication. The method comprises the following steps: a central monitoring platform transmits field audio and video data to an arm wearing terminal and a command center in real time; a fire scene spreading trend chart is generated based on the field data, fire spreading indexes in all directions of the fire scene are obtained based on the fire scene spreading trend chart, and the fire extinguishing priority is sent to a command center; and analyzing the danger index of the fire scene area based on the fire behavior spreading condition and the field environment data. According to the invention, the fire behavior spreading index and the regional danger index are obtained in different regions of the forest fire scene, so that the optimal allocation of fire scene fire extinguishing resources is realized, the safety and flexibility of fire extinguishing teams are improved, and the problems that the communication efficiency is improved only through an ad-hoc network and the cost is low in the prior art are solved. And reasonable dynamic adjustment and resource allocation cannot be carried out on firefighters according to the combustion condition of the forest fire scene, so that the fire extinguishing efficiency is low.

Description

Technical Field

[0001] The present invention relates to the field of networking communication technology, and in particular to a communication networking method and system for preventing forest fires in mountainous areas. Background Art

[0002] As my country pays more and more attention to forest resource protection and forestry continues to develop, the forest area in mountainous areas continues to expand, the total amount of forest resources continues to grow, and the importance of forest fire prevention becomes increasingly prominent. However, factors such as the complex topography and changing climate conditions in mountainous areas have brought huge challenges to forest fire prevention communications. Once a fire occurs, how to ensure unimpeded communication and achieve efficient command and dispatch has become a problem that needs to be solved.

[0003] Conventional wireless communication systems achieve communication coverage within a certain range by building fixed base stations in mountainous areas and using the transmission of wireless signals. For example, some communication systems based on ultra-short waves, microwaves and other frequency bands can work well in areas with relatively flat terrain and less obstruction, but in complex mountainous terrain, signals are easily blocked and reflected by mountains, resulting in communication blind spots, which cannot meet the communication needs of forest fire prevention in the entire mountainous area.

[0004] For example, the invention patent with publication number: CN116828639A discloses a high-availability communication networking method and system for forest fire prevention, including: based on a wireless communication network, a control center collects and processes global data and issues instructions at the same time; communication relays between a mobile terminal and a control center are performed through a relay device; the mobile terminal includes at least a personal communication terminal and a sound amplification device, and the personal communication terminal and the sound amplification device are wirelessly connected to the relay device; when it is detected that the personal communication terminal is in a faulty state, the sound amplification device is controlled to replace the faulty device to implement communication; multiple relay devices are configured to serve as backup communication relay devices for each other; and load balancing scheduling is performed within the communication network composed of relay devices and mobile terminals based on a convolutional neural network model.

[0005] For example, the invention patent with publication number: CN110278533B discloses a forest fire prevention data communication method based on a network control system, including: installing multiple primary devices in the forest area to be monitored; installing multiple secondary devices in the forest area to be monitored, and establishing a corresponding relationship between the secondary devices and the primary devices, so that one secondary device corresponds to at least one primary device; the primary device collects fire prevention data in the forest area to be monitored, and sends the fire prevention data to the corresponding secondary device; the secondary device forwards the fire prevention data to the control center. The present invention uses the network control system theory combined with the mixed event trigger mechanism to process the collected forest fire monitoring data process.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, only by improving communication efficiency through self-organizing networks, it is impossible to make reasonable dynamic adjustments and resource allocations for firefighters according to the burning conditions of the forest fire, and it is also impossible to carry out reasonable and accurate command and dispatch, resulting in low fire extinguishing efficiency. Summary of the invention

[0008] The embodiments of the present application provide a communication networking method and system for forest fire prevention in mountainous areas, thereby solving the problem in the prior art that communication efficiency is improved only by self-organizing networks, and firefighters cannot be reasonably and dynamically adjusted and resources allocated according to the burning conditions of the forest fire, resulting in low firefighting efficiency. The embodiment of the present application realizes the ability to make real-time dynamic adjustments to firefighters according to the burning conditions of the forest fire, thereby enhancing the accuracy of command and dispatch and improving firefighting efficiency.

[0009] The embodiment of the present application provides a communication networking method for forest fire prevention in mountainous areas, comprising the following steps: a central monitoring platform obtains on-site data of a forest fire scene from a database, wherein the on-site data includes on-site audio and video data and on-site environmental data; the central monitoring platform transmits the on-site audio and video data to an arm-worn terminal in real time through mobile communication; the central monitoring platform transmits the on-site audio and video data to a command center in real time through Wi-Fi communication; the central monitoring platform generates a fire spread trend chart based on the on-site data, and obtains a fire spread index in each direction of the fire scene based on the fire spread trend chart, wherein the fire spread index is used to reflect the current fire spread situation of the fire scene, and if there is a direction whose fire spread index is lower than a set fire spread threshold, the fire extinguishing priority of the direction is low, and if there is a direction whose fire spread index is not lower than the set fire spread threshold, the fire extinguishing priority of the direction is high; the central monitoring platform transmits the on-site audio and video data to an arm-worn terminal ... and the fire spread index is used to reflect the current fire spread situation of the fire scene; if there is a direction whose fire spread index is lower than a set fire spread threshold, the fire extinguishing priority of the direction is i communication sends the fire extinguishing priority to the command center; when the command center receives the fire extinguishing priority, it obtains the adjustment strategy derived by the commander according to the fire extinguishing priority, and the adjustment strategy is used to adjust the work of the firefighters; the command center sends the adjustment strategy to the arm-worn terminal of the firefighters through wireless digital trunking communication; the central monitoring platform analyzes the fire area danger index based on the fire spread and on-site environmental data, and the regional danger index is used to reflect the danger level of each area of ​​the fire scene; if the danger index of a certain area is lower than the set danger level threshold, the arrangement of firefighters in the area is maintained without adjustment; if the danger index of a certain area is not lower than the set danger level threshold, the regional danger level is obtained based on the regional danger index; if the regional danger level is lower than the set danger level threshold, the central monitoring platform sends an additional dispatch signal to the arm-worn terminal of the firefighters in the area through mobile communication; if the regional danger level is not lower than the set danger level threshold, the central monitoring platform sends an evacuation signal to the arm-worn terminal of the firefighters in the area through mobile communication.

[0010] Furthermore, a fire spread trend chart is generated based on the on-site data, including the following steps: extracting key feature data of the fire scene by preprocessing the on-site audio and video data, and tracking and analyzing the extracted key feature data; combining the extracted key feature data with geographic coordinates, using drawing software to integrate and visualize the fire feature data at each time point, and drawing a fire spread trend chart.

[0011] Furthermore, obtaining the fire spread index in all directions of the fire scene based on the fire spread trend chart includes the following steps: based on the fire spread trend chart, taking the fire source as the center, dividing a plurality of fire spread direction areas according to the direction; based on the on-site environmental data, obtaining the regional wind speed, regional temperature, and regional soil moisture of each fire spread direction area, and performing preprocessing; obtaining the weight factor of the preprocessed regional wind speed, regional temperature, and regional soil moisture for the fire spread index through an objective weighting method; and obtaining the fire spread index in all directions of the fire scene through the fire spread index formula.

[0012] Furthermore, the fire spread index formula is:

[0013]

[0014] Where ML is the fire spread index, FS is the regional wind speed, α1 is the weight factor of FS on ML, WD is the regional temperature, α2 is the weight factor of WD on ML, SD is the regional soil moisture, α3 is the weight factor of SD on ML, and e is a natural constant.

[0015] Furthermore, based on the fire spread situation and on-site environmental data, the fire area hazard index is analyzed, including the following steps: based on multiple fire spread direction areas, the regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index of each area are obtained through on-site environmental data, and preprocessed; the weight factors of the preprocessed regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index for the regional fire extinguishing difficulty index are obtained through an objective weighting method; the regional fire extinguishing difficulty index is obtained through the regional fire extinguishing difficulty index formula; the weight factors of the fire extinguishing difficulty index and the fire spread index for the regional hazard index are obtained through the objective weighting method, and the regional hazard index is obtained through the regional hazard index formula.

[0016] Furthermore, the fire extinguishing difficulty index formula is:

[0017]

[0018] Wherein, ND is the regional fire extinguishing difficulty index, QT is the regional toxic gas concentration, β1 is the weight factor of QT to ND, RL is the regional fuel accumulation, β2 is the weight factor of RL to ND, DX is the regional terrain threat index, β3 is the weight factor of DX to ND, and e is a natural constant.

[0019] Furthermore, the regional danger index formula is:

[0020]

[0021] Where WX is the regional danger index, ML is the fire spread index, γ1 is the weight factor of ML to WX, ND is the regional fire extinguishing difficulty index, γ2 is the weight factor of ND to WX, and e is a natural constant.

[0022] Furthermore, the steps for obtaining the regional terrain threat index are: based on multiple fire spread direction areas, obtain the regional slope, regional terrain undulation, and regional soil looseness of each area, and perform preprocessing; obtain the weight factor of the preprocessed regional slope, regional terrain undulation, and regional soil looseness to the regional terrain threat index through an objective weighting method; and obtain the regional terrain threat index through the regional terrain threat index formula.

[0023] Furthermore, the regional terrain threat index formula is:

[0024]

[0025] Where DX is the regional terrain threat index, PD is the regional slope, δ1 is the weight factor of PD on DX, QF is the regional terrain undulation, δ2 is the weight factor of QF on DX, SS is the regional soil looseness, and δ3 is the weight factor of SS on DX.

[0026] The embodiment of the present application provides a mountain forest fire prevention communication networking system, including: a data acquisition module, a data transmission module, a fire extinguishing priority assessment module, a fire area danger level assessment module, and a danger level assessment module; wherein the data acquisition module is used for the central monitoring platform to acquire on-site data of the forest fire scene, and the on-site data includes on-site audio and video data and on-site environmental data; the data transmission module is used for the central monitoring platform to transmit the on-site audio and video data to the arm-worn terminal and the command center in real time; the fire extinguishing priority assessment module is used to generate a fire spread trend chart based on the on-site data, and obtain the fire spread index in each direction of the fire scene based on the fire spread trend chart, and the fire spread index is used to reflect the current fire spread situation of the fire scene; if the fire spread index in a certain direction is lower than the set fire spread threshold, the fire extinguishing priority in that direction is low; if there is a certain direction whose fire spread index is lower than the set fire spread threshold, the fire extinguishing priority in that direction is low; If the fire spread index in a certain direction is not lower than the set fire spread threshold, the fire extinguishing priority in that direction is high, and the fire extinguishing priority is sent to the command center; the fire area danger level assessment module is used to analyze the fire area danger index based on the fire spread situation and on-site environmental data, and the regional danger index is used to reflect the danger level of each area of ​​the fire scene; the danger level assessment module is used to maintain the arrangement of firefighters in the area without making adjustments if the danger index of a certain area is lower than the set danger level threshold, and obtain the regional danger level based on the regional danger index if the danger index of a certain area is not lower than the set danger level threshold; if the regional danger level is lower than the set danger level threshold, an additional dispatch signal is sent to the arm-worn terminal of the firefighters in the area; if the regional danger level is not lower than the set danger level threshold, an evacuation signal is sent to the arm-worn terminal of the firefighters in the area.

[0027] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0028] 1. Real-time audio and video data of the fire scene and environmental data can be obtained through the central monitoring platform, so as to accurately capture the real-time changes of the fire scene, and then generate a fire spread trend chart and calculate the fire spread index, effectively realizing the intelligent analysis of the fire spread direction, and then transmitting the fire spread priority to the command center to realize dynamic monitoring and precise dispatch of the fire spread, effectively solving the problems of delayed fire spread judgment and inaccurate command and dispatch in the existing technology.

[0029] 2. By comparing and analyzing the fire spread index with the set threshold, the degree of fire spread in different directions in the fire scene can be identified in real time, and then the fire extinguishing priority can be automatically adjusted and transmitted to the command center, effectively realizing the optimal allocation of fire extinguishing resources at the fire scene, avoiding unreasonable resource mobilization, and improving fire extinguishing efficiency.

[0030] 3. By combining on-site environmental data with the analysis of the fire area hazard index, the danger level of each area of ​​the fire scene can be evaluated in real time, and accurate dispatch or evacuation instructions can be provided to firefighters, effectively improving the safety and flexibility of the firefighting team, avoiding excessive assembly or mistaken withdrawal of firefighters, and effectively solving the problems of untimely regional hazard assessment and unreasonable arrangement of firefighters in the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A flow chart of a method for communication networking for forest fire prevention in mountainous areas provided in an embodiment of the present application.

[0032] Figure 2 A schematic diagram of the mountain forest fire prevention communication network structure provided in an embodiment of the present application.

[0033] Figure 3 A structural schematic diagram of a mountain forest fire prevention communication networking system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The embodiments of the present application provide a communication networking method and system for forest fire prevention in mountainous areas, thereby solving the problem in the prior art that firefighters cannot be reasonably and dynamically adjusted and resources are allocated according to the burning conditions of the forest fire scene, resulting in low fire-fighting efficiency. By dividing the forest fire scene into regions to obtain the fire spread index and regional danger index, the optimal allocation of fire-fighting resources is achieved, thereby improving the safety and flexibility of the fire-fighting team.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Figure 1 A flow chart of a method for networking communication for preventing forest fires in mountainous areas provided in an embodiment of the present application, Figure 2A schematic diagram of a communication networking structure for forest fire prevention in a mountainous area provided in an embodiment of the present application, the method comprising the following steps: a central monitoring platform obtains on-site data of a forest fire scene from a database, the on-site data comprising on-site audio and video data and on-site environmental data; the central monitoring platform transmits the on-site audio and video data to an arm-worn terminal in real time through mobile communication; the central monitoring platform transmits the on-site audio and video data to a command center in real time through Wi-Fi communication; the central monitoring platform generates a fire spread trend chart based on the on-site data, and obtains a fire spread index in each direction of the fire scene based on the fire spread trend chart, the fire spread index being used to reflect the current fire spread situation of the fire scene, if there is a direction in which the fire spread index is lower than a set fire spread threshold, the fire extinguishing priority of the direction is low, if there is a direction in which the fire spread index is not lower than the set fire spread threshold, the fire extinguishing priority of the direction is high; the central monitoring platform sends the fire extinguishing priority to the command center through Wi-Fi communication; when the command center receives the fire extinguishing priority, it obtains an adjustment strategy derived by the commander according to the fire extinguishing priority, the adjustment strategy being used to adjust the work of firefighters; the command center sends the adjustment strategy to the arm-worn terminal of the firefighter through wireless digital trunking communication.

[0037] The central monitoring platform analyzes the fire area danger index based on the fire spread and on-site environmental data. The regional danger index is used to reflect the danger level of each area in the fire scene. If the danger index of a certain area is lower than the set danger level threshold, the arrangement of firefighters in the area will be maintained without adjustment. If the danger index of a certain area is not lower than the set danger level threshold, the regional danger level is obtained based on the regional danger index. If the regional danger level is lower than the set danger level threshold, the central monitoring platform will send an additional dispatch signal to the arm-worn terminal of the firefighters in the area through mobile communication. If the regional danger level is not lower than the set danger level threshold, the central monitoring platform will send an evacuation signal to the arm-worn terminal of the firefighters in the area through mobile communication.

[0038] In this embodiment, on-site audio and video data and on-site environmental data of the forest fire scene are obtained through the Sky Eye system and multiple sensors. The obtained on-site data is processed and analyzed by the central monitoring platform and then wirelessly transmitted to the firefighter's arm-worn terminal and the command center, so that the commander can make real-time decisions and effectively respond to changes in the fire scene.

[0039] The degree of fire spread in all directions of the fire scene is judged according to the fire spread index, and the fire extinguishing priority in all directions of the fire scene is obtained based on the degree of fire spread in all directions of the fire scene. The fire extinguishing priority is sent to the command center, which helps the commander to reasonably dispatch firefighters according to the fire extinguishing priority and improve the fire extinguishing efficiency.

[0040] The danger level of each area in the fire scene is judged according to the fire area danger index, and the danger level of the area is judged according to the area danger level. If the danger level of the area is low, it means that the fire in the area is still within the controllable range, and the commander needs to send additional firefighters to the area. If the danger level of the area is high, it means that the fire in the area is beyond the controllable range, and the commander needs to arrange for the firefighters in the area to evacuate. This not only improves the firefighting efficiency of forest fires, but also improves the safety of firefighters.

[0041] Furthermore, a fire spread trend chart is generated based on the on-site data, including the following steps: extracting key feature data of the fire scene by preprocessing the on-site audio and video data, and tracking and analyzing the extracted key feature data; combining the extracted key feature data with geographic coordinates, using drawing software to integrate and visualize the fire feature data at each time point, and drawing a fire spread trend chart.

[0042] In this embodiment, by performing denoising, image quality enhancement and image stabilization on the image data in the on-site audio and video data, the blurring effect caused by environmental interference (such as smoke and haze) can be reduced, the contrast of the flame can be improved, and the flame and the spreading boundary of the fire scene can be made clearer and more visible. In addition, the audio data is subjected to noise filtering and feature extraction to identify the burning sound of the flame, the sound of the wind, the crackling sound of the fire spreading, etc., which is helpful to identify the spread of the fire and the intensity of the fire.

[0043] Extract key feature data of the fire scene, including flame boundary, fire spread speed, flame direction, etc., track and analyze key feature data through time series analysis, compare the current image with the image at the previous moment through feature matching algorithm, and analyze the change trend of flame boundary, smoke expansion, etc. In this way, the speed of fire spread, the change of fire intensity and the direction of spread can be determined. At the same time, by analyzing the frequency change and volume change in the audio data, the change of fire intensity can be inferred. By tracking these key features, the progress of fire spread can be dynamically monitored, providing commanders with real-time information and helping to formulate emergency response plans.

[0044] The flame boundaries and spread areas extracted from the fire scene video are geographically located through geographic information system (GIS) technology, and converted into location data in the actual geographic coordinate system of the fire scene; by combining the fire spread characteristics with the geographic coordinates, the spatial characteristics of the fire spread can be corresponded to the specific geographic location, thereby clearly showing the direction and scope of the fire spread.

[0045] The dynamic process of fire spread is plotted in the geographic coordinate system through drawing software. According to the fire spread data at different time points, fire spread trend charts at multiple time nodes are generated to show the speed, scope and changing trend of fire spread. In this way, commanders can intuitively understand the fire spread and make fire extinguishing decisions based on the charts.

[0046] Furthermore, obtaining the fire spread index in all directions of the fire scene based on the fire spread trend chart includes the following steps: based on the fire spread trend chart, taking the fire source as the center, dividing a plurality of fire spread direction areas according to the direction; based on the on-site environmental data, obtaining the regional wind speed, regional temperature, and regional soil moisture of each fire spread direction area, and performing preprocessing; obtaining the weight factor of the preprocessed regional wind speed, regional temperature, and regional soil moisture for the fire spread index through an objective weighting method; and obtaining the fire spread index in all directions of the fire scene through the fire spread index formula.

[0047] In this embodiment, the fire source is regarded as the coordinate origin through the polar coordinate system, and the fire scene is divided into multiple directional areas with different angles and radii (distances). The fire scene can be divided into multiple areas by setting the angle of each direction (for example, 0 degrees to 360 degrees, and each certain angle is divided into an area) and the radius range. The fire spread in each area can be evaluated based on environmental factors such as wind speed, temperature, and humidity in the area.

[0048] The drone carries multiple sensors, including wind speed sensors, temperature sensors and optical sensors, to obtain the regional wind speed, regional temperature and regional soil moisture in each fire spread direction. Compared with the traditional ground sampling method, it can quickly collect a large amount of soil moisture data and is suitable for soil moisture monitoring in a large area.

[0049] Furthermore, the fire spread index formula is:

[0050]

[0051] Where ML is the fire spread index, FS is the regional wind speed, α1 is the weight factor of FS on ML, WD is the regional temperature, α2 is the weight factor of WD on ML, SD is the regional soil moisture, α3 is the weight factor of SD on ML, and e is a natural constant.

[0052] In this embodiment, when FS=3, α1=0.5, WD=50, α2=0.3, SD=0.8, and α3=0.2, ML=1.23 is obtained. The larger the fire spread index is, the higher the fire extinguishing priority of the area is.

[0053] Furthermore, based on the fire spread situation and on-site environmental data, the fire area hazard index is analyzed, including the following steps: based on multiple fire spread direction areas, the regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index of each area are obtained through on-site environmental data, and preprocessed; the weight factors of the preprocessed regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index for the regional fire extinguishing difficulty index are obtained through an objective weighting method; the regional fire extinguishing difficulty index is obtained through the regional fire extinguishing difficulty index formula; the weight factors of the fire extinguishing difficulty index and the fire spread index for the regional hazard index are obtained through the objective weighting method, and the regional hazard index is obtained through the regional hazard index formula.

[0054] In this embodiment, the gas sensors and lidar carried by the drone are used to obtain the regional toxic gas concentration and the regional fuel accumulation. The gas sensors can directly obtain the concentration of harmful gases in the area. Common harmful gases include carbon monoxide, carbon dioxide and nitrogen oxides. The lidar is used to obtain the detailed three-dimensional terrain and vegetation height data of the area, which helps to accurately measure the growth and distribution of plants in forests or grasslands, thereby inferring the fuel accumulation.

[0055] The regional fire extinguishing difficulty index is obtained through the regional fire extinguishing difficulty index formula, and the regional danger index of the area is determined based on the fire extinguishing difficulty index and the fire spread index. The regional danger index of the area is used to rank the danger level of the area. When the area is in a low-risk area, additional firefighters are dispatched to the area to improve the fire extinguishing efficiency. If the area is in a high-risk area, the command center transmits a retreat signal to the firefighter's arm-worn terminal to notify the firefighters in the area to evacuate, preventing casualties among the firefighters in the area and effectively improving the safety of firefighting by firefighters.

[0056] Furthermore, the fire extinguishing difficulty index formula is:

[0057]

[0058] Where ND is the regional fire extinguishing difficulty index, QT is the regional toxic gas concentration, β1 is the weight factor of QT to ND, RL is the regional fuel accumulation, β2 is the weight factor of RL to ND, DX is the regional terrain threat index, and β3 is the weight factor of DX to ND.

[0059] In this embodiment, when QT=0.6, β1=0.4, RL=50, β2=0.3, DX=0.7, β3=0.3, ND=3.099 is obtained. The higher the regional fire extinguishing difficulty index is, the more difficult it is to extinguish the fire in the area.

[0060] Furthermore, the regional hazard index formula is:

[0061]

[0062] Where WX is the regional danger index, ML is the fire spread index, γ1 is the weight factor of ML to WX, ND is the regional fire extinguishing difficulty index, and γ2 is the weight factor of ND to WX.

[0063] In this embodiment, when ML=1.23, γ1=0.6, ND=3.099, γ2=0.4, WX=0.991 is obtained. The closer the regional danger index is to 1, the more dangerous it is for firefighters to extinguish fire in the area.

[0064] Furthermore, the steps for obtaining the regional terrain threat index are as follows: based on multiple fire spread direction areas, the regional slope, regional terrain undulation, and regional soil looseness of each area are obtained and preprocessed; the weight factor of the preprocessed regional slope, regional terrain undulation, and regional soil looseness to the regional terrain threat index is obtained through an objective weighting method; and the regional terrain threat index is obtained through the regional terrain threat index formula.

[0065] In this embodiment, the regional slope, regional terrain undulation, and regional soil looseness in the area are obtained by carrying a laser radar device and a soil moisture sensor on a drone; the laser radar device generates a high-resolution digital elevation model from the collected point cloud data. When the drone is flying, the laser radar device scans the ground and collects high-precision point cloud data. The point cloud data represents the precise three-dimensional coordinates (X, Y, Z) of each point on the ground, where the Z value represents the height of the point. Using these point cloud data, a digital elevation model (DEM) can be generated, and the slope of each area can be calculated; by analyzing the digital elevation model data, the change in elevation in the area can be calculated. For example, the standard deviation or coefficient of variation of each ground unit is calculated, and these indicators can reflect the degree of undulation of the terrain; the soil moisture in the area is directly obtained by the soil moisture sensor, and the soil looseness in the area is calculated according to the soil moisture formula. The lower the soil moisture, the lower the soil looseness in the area.

[0066] Furthermore, the regional terrain threat index formula is:

[0067]

[0068] Where DX is the regional terrain threat index, PD is the regional slope, δ1 is the weight factor of PD on DX, QF is the regional terrain undulation, δ2 is the weight factor of QF on DX, SS is the regional soil looseness, and δ3 is the weight factor of SS on DX.

[0069] In this embodiment, when PD=0.3, δ1=0.3, QF=0.4, δ2=0.3, SS=0.6, δ3=0.4, WX=0.8 is obtained. If the regional terrain threat index is closer to 1, it means that the terrain in the area is more difficult to extinguish the fire.

[0070] like Figure 3 As shown, it is a structural schematic diagram of a mountain forest fire prevention communication networking system provided by an embodiment of the present application. A mountain forest fire prevention communication networking system provided by an embodiment of the present application includes: a data acquisition module, a data transmission module, a fire extinguishing priority assessment module, a fire area danger level assessment module, and a danger level assessment module; wherein, the data acquisition module is used for the central monitoring platform to acquire on-site data of the forest fire scene, and the on-site data includes on-site audio and video data and on-site environmental data; the data transmission module is used for the central monitoring platform to transmit the on-site audio and video data to the arm-worn terminal and the command center in real time; the fire extinguishing priority assessment module is used to generate a fire spread trend chart based on the on-site data, and obtain the fire spread index in each direction of the fire scene based on the fire spread trend chart, and the fire spread index is used to reflect the current fire spread situation of the fire scene; if the fire spread index in a certain direction is lower than the set fire spread threshold, The fire extinguishing priority in that direction is low. If there is a direction whose fire spread index is not lower than the set fire spread threshold, the fire extinguishing priority in that direction is high, and the fire extinguishing priority is sent to the command center; the fire area danger level assessment module is used to analyze the fire area danger index based on the fire spread situation and on-site environmental data, and the regional danger index is used to reflect the danger level of each area of ​​the fire scene; the danger level assessment module is used to maintain the arrangement of firefighters in the area without making adjustments if the danger index of a certain area is lower than the set danger level threshold; if the danger index of a certain area is not lower than the set danger level threshold, the regional danger level is obtained based on the regional danger index; if the regional danger level is lower than the set danger level threshold, an additional dispatch signal is sent to the arm-worn terminal of the firefighters in the area; if the regional danger level is not lower than the set danger level threshold, an evacuation signal is sent to the arm-worn terminal of the firefighters in the area.

[0071] In this embodiment, the data acquisition module is responsible for collecting audio and video data and environmental data from the forest fire scene, including environmental factors such as temperature, humidity, wind speed, and real-time video and audio information of the fire scene. These data are sent to the central monitoring platform via wireless transmission, ensuring that the central monitoring platform can obtain the latest status of the fire scene in real time, effectively providing an intuitive reflection of the on-site environment and changes in the fire scene.

[0072] The data transmission module receives the audio and video data and environmental data from the data acquisition module, and transmits these data in real time to the arm-worn terminal and the command center through the wireless network. It can quickly transmit the fire scene audio and video and environmental data to the fire command center and on-site firefighters in real time, improve the timeliness and accuracy of command decisions, and enhance the response speed of command personnel.

[0073] The fire extinguishing priority assessment module evaluates the fire spread in all directions of the fire scene through the fire spread trend chart, obtains the fire spread index, and assesses the fire extinguishing priority based on the fire spread index. Fire extinguishing resources are deployed preferentially in areas where the fire spreads rapidly, which helps commanders to scientifically and rationally allocate fire extinguishing forces and reduce the risk of casualties and fire spread.

[0074] The fire area hazard level assessment module analyzes the hazard index of the fire area through the fire spread and on-site environmental data. The fire area hazard index reflects the hazard level of different areas. It can accurately assess the hazard level, issue early warnings and adjust personnel deployment, thereby improving the pertinence and effectiveness of fire-fighting operations.

[0075] The danger level assessment module evaluates the danger level of each area of ​​the fire scene based on the regional danger index, and adjusts the deployment of firefighters according to the set threshold. When the danger index of a certain area is lower than the set threshold, the original personnel arrangement is maintained; if the danger index is higher than the threshold, the personnel deployment is adjusted according to the danger level, effectively ensuring the safety of firefighters and avoiding casualties due to negligence or information delays.

[0076] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0077] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0078] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0080] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0081] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for forest fire prevention communication networking in mountainous areas, characterized in that: The following steps are involved: The central monitoring platform obtains on-site data of the forest fire scene from the database, wherein the on-site data includes on-site audio and video data and on-site environmental data; The central monitoring platform transmits on-site audio and video data to the arm-worn terminal in real time via mobile communications; The central monitoring platform transmits on-site audio and video data to the command center in real time via WiFi communication; The central monitoring platform generates a fire spread trend chart based on the on-site data, and obtains the fire spread index in each direction of the fire based on the fire spread trend chart. The fire spread index is used to reflect the current fire spread situation of the fire scene; if the fire spread index in a certain direction is lower than the set fire spread threshold, the fire extinguishing priority in this direction is low; if the fire spread index in a certain direction is not lower than the set fire spread threshold, the fire extinguishing priority in this direction is high; The central monitoring platform sends the fire extinguishing priority to the command center via WiFi communication; When the command center receives the fire extinguishing priority, it obtains the adjustment strategy obtained by the commander according to the fire extinguishing priority, and the adjustment strategy is used to adjust the work of the firefighters; The command center sends the adjustment strategy to the arm-worn terminal of the firefighters through wireless digital trunking communication; The central monitoring platform analyzes the fire area danger index based on the fire spread and on-site environmental data. The regional danger index is used to reflect the danger level of each area in the fire scene. If the danger index of a certain area is lower than the set danger level threshold, the firefighter arrangement in the area will be maintained without adjustment. If the danger index of a certain area is not lower than the set danger level threshold, the danger level of the area will be obtained based on the danger index of the area. If the regional danger level is lower than the set danger level threshold, the central monitoring platform will send a dispatch signal to the arm-worn terminals of firefighters in the area through mobile communications. If the regional danger level is not lower than the set danger level threshold, the central monitoring platform will send an evacuation signal to the arm-worn terminals of firefighters in the area through mobile communications.

2. A method for forest fire prevention communication networking in mountainous areas as claimed in claim 1, characterized in that: Generating a fire spread trend chart based on on-site data includes the following steps: By preprocessing the on-site audio and video data, the key characteristic data of the fire scene is extracted, and the extracted key characteristic data is tracked and analyzed; The extracted key feature data are combined with geographic coordinates, and drawing software is used to integrate and visualize the fire feature data at each time point to draw a fire spread trend chart.

3. A method for forest fire prevention communication networking in mountainous areas as claimed in claim 1, characterized in that: Obtaining the fire spread index in each direction of the fire scene based on the fire spread trend chart includes the following steps: Based on the fire spread trend chart, with the fire source as the center, multiple fire spread direction areas are divided according to the direction; Based on the on-site environmental data, the regional wind speed, regional temperature, and regional soil moisture of each fire spreading direction area are obtained and pre-processed; The weight factors of regional wind speed, regional temperature and regional soil moisture on fire spread index after preprocessing are obtained through objective weighting method. The fire spread index in all directions of the fire scene is obtained through the fire spread index formula.

4. A method for forest fire prevention communication networking in mountainous areas as claimed in claim 3, characterized in that: The fire spread index formula is: Where ML is the fire spread index, FS is the regional wind speed, α1 is the weight factor of FS on ML, WD is the regional temperature, α2 is the weight factor of WD on ML, SD is the regional soil moisture, α3 is the weight factor of SD on ML, and e is a natural constant.

5. A method for communication networking for forest fire prevention in mountainous areas as claimed in claim 1, characterized in that: Based on the fire spread and on-site environmental data, the fire area danger index is analyzed, including the following steps: Based on multiple fire spreading direction areas, the regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index of each area are obtained through on-site environmental data, and pre-processed; The weight factors of regional toxic gas concentration, regional fuel accumulation, and regional terrain threat index on regional fire fighting difficulty index after pretreatment are obtained through objective weighting method. Obtain the regional fire fighting difficulty index through the regional fire fighting difficulty index formula; The objective weighting method is used to obtain the weight factors of the fire extinguishing difficulty index and the fire spread index to the regional hazard index, and the regional hazard index is obtained through the regional hazard index formula.

6. A method for communication networking for forest fire prevention in mountainous areas as claimed in claim 5, characterized in that: The fire extinguishing difficulty index formula is: Wherein, ND is the regional fire extinguishing difficulty index, QT is the regional toxic gas concentration, β1 is the weight factor of QT to ND, RL is the regional fuel accumulation, β2 is the weight factor of RL to ND, DX is the regional terrain threat index, β3 is the weight factor of DX to ND, and e is a natural constant.

7. A method for forest fire prevention communication networking in mountainous areas as claimed in claim 5, characterized in that: The regional hazard index formula is: Where WX is the regional danger index, ML is the fire spread index, γ1 is the weight factor of ML to WX, ND is the regional fire extinguishing difficulty index, γ2 is the weight factor of ND to WX, and e is a natural constant.

8. A method for communication networking for forest fire prevention in mountainous areas as claimed in claim 6, characterized in that: The steps for obtaining the regional terrain threat index are as follows: Based on multiple fire spreading direction areas, obtain the regional slope, regional terrain undulation, and regional soil looseness of each area and perform preprocessing; The weight factors of the pre-processed regional slope, regional terrain undulation, and regional soil looseness on the regional terrain threat index are obtained through the objective weighting method. The regional terrain threat index is obtained through the regional terrain threat index formula.

9. A method for forest fire prevention communication networking in mountainous areas as claimed in claim 8, characterized in that: The regional terrain threat index formula is: Where DX is the regional terrain threat index, PD is the regional slope, δ1 is the weight factor of PD on DX, QF is the regional terrain undulation, δ2 is the weight factor of QF on DX, SS is the regional soil looseness, and δ3 is the weight factor of SS on DX.

10. A mountain forest fire prevention communication networking system, characterized in that: include: Data acquisition module, data transmission module, fire extinguishing priority assessment module, fire area danger level assessment module, and danger level assessment module; Wherein, the data acquisition module is used for the central monitoring platform to acquire on-site data of the forest fire scene, and the on-site data includes on-site audio and video data and on-site environmental data; The data transmission module is used for the central monitoring platform to transmit on-site audio and video data to the arm-worn terminal and the command center in real time; The fire extinguishing priority assessment module is used to generate a fire spread trend chart based on the on-site data, and obtain the fire spread index in each direction of the fire based on the fire spread trend chart, and the fire spread index is used to reflect the current fire spread situation; If the fire spread index in a certain direction is lower than the set fire spread threshold, the fire extinguishing priority in that direction is low. If the fire spread index in a certain direction is not lower than the set fire spread threshold, the fire extinguishing priority in that direction is high, and the fire extinguishing priority is sent to the command center. The fire area danger level assessment module is used to analyze the fire area danger index based on the fire spread and on-site environmental data. The area danger index is used to reflect the danger level of each area in the fire scene; The danger level assessment module is used to maintain the firefighting personnel arrangement in a certain area without making any adjustment if the danger index of a certain area is lower than the set danger level threshold, and to obtain the danger level of the area based on the danger index of the area if the danger index of a certain area is not lower than the set danger level threshold; If the regional danger level is lower than the set danger level threshold, a dispatch signal will be sent to the arm-worn terminal of the firefighters in the area. If the regional danger level is not lower than the set danger level threshold, an evacuation signal will be sent to the arm-worn terminal of the firefighters in the area.

Images