Fire extinguishing method and device under dangerous chemical leakage scene

Abstract

The invention provides a fire extinguishing method and device in a dangerous chemical leakage scene, and the method comprises the steps: obtaining the type of a dangerous chemical, the weather information and topographic information of a fire scene, and the leakage range of the dangerous chemical after a server detects the combustion of the dangerous chemical; determining a fire extinguishing scheme according to the dangerous chemical type, the weather information, the topographic information, the combustion range and the leakage range; sending the fire extinguishing scheme to field command equipment; and receiving a confirmation instruction of the field command equipment, and sending the fire extinguishing scheme to the intelligent wearable equipment. Therefore, in the application, the applicable fire extinguishing scheme is directly output according to the dangerous chemical fire scene condition, and the fire extinguishing scheme is issued to the intelligent wearable device of each fireman through the scene command device of the scene command center, so that the efficiency and accuracy of fire emergency response are effectively improved; and pertinence and safety of fire extinguishing actions of dangerous chemicals are ensured.

Description

Technical Field

[0001] This application relates to the field of data processing, and particularly to a fire extinguishing method and device in the scenario of dangerous chemical leakage. Background Art

[0002] Dangerous chemicals are very likely to cause fire and explosion accidents. Moreover, when different chemicals catch fire under different circumstances, their extinguishing methods vary greatly. If the disposal is improper, not only can the fire not be effectively extinguished, but the disaster situation will be further enlarged. In addition, due to the strong toxicity and corrosiveness of most of the chemicals themselves and their combustion products, it is extremely easy to cause poisoning, burns, etc. to personnel. Therefore, it is particularly important to accurately and quickly determine the appropriate fire extinguishing method and fire extinguishing equipment when dangerous chemicals catch fire. Summary of the Invention

[0003] This application provides a fire extinguishing method and device in the scenario of dangerous chemical leakage, directly outputs an applicable fire extinguishing plan based on the situation at the dangerous chemical fire scene, and sends the fire extinguishing plan to the intelligent wearable devices of each firefighter through the on-site command equipment of the on-site command center, greatly improving the efficiency and accuracy of fire fighting emergency response, and ensuring the scientificity, pertinence and safety of the dangerous chemical fire fighting operation.

[0004] In a first aspect, this application provides a fire extinguishing method in the scenario of dangerous chemical leakage, which is applied to a fire extinguishing system. The fire extinguishing system includes a server, the on-site command equipment of the command center, and the intelligent wearable devices of firefighters. The method includes: after detecting the combustion of dangerous chemicals, obtaining the type of dangerous chemicals, the meteorological information and terrain information of the fire scene; and obtaining the combustion range and the leakage range of the dangerous chemicals; determining a fire extinguishing plan according to the type of dangerous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range, where the fire extinguishing plan includes fire fighting equipment configuration information, fire fighting manpower configuration information, and fire fighting route deployment information; sending the fire extinguishing plan to the on-site command equipment; and receiving the confirmation instruction of the on-site command equipment and sending the fire extinguishing plan to the intelligent wearable devices.

[0005] In some embodiments, determining a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range includes: determining the fire extinguishing agent material and the fire extinguishing method according to the type of hazardous chemicals; determining the potential combustion range according to the leakage range and the combustion range, and determining the amount of fire extinguishing agent according to the potential combustion range; determining the combustion intensity of the hazardous chemicals according to the type of hazardous chemicals and the meteorological information, and determining the dispensing frequency of the fire extinguishing agent according to the combustion intensity; determining the types and quantities of fire fighting equipment according to the fire extinguishing agent material, the fire extinguishing method, and the amount of fire extinguishing agent, where the fire fighting equipment includes aerial fire fighting equipment, ground fire extinguishing equipment, and underground fire extinguishing equipment; determining the working frequency of the fire fighting equipment according to the dispensing frequency; and determining the fire fighting equipment configuration information according to the types, quantities, and working frequencies of the fire fighting equipment.

[0006] In some embodiments, determining a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: determining a preset diffusion range according to the type of hazardous chemicals, the leakage range, and the meteorological information; determining the number of firefighters according to the preset diffusion range and the quantity of fire fighting equipment; determining the types of firefighters according to the types of fire fighting equipment; and determining the fire fighting human resource configuration information according to the number of firefighters and the types of firefighters.

[0007] In some embodiments, the fire fighting route deployment information includes fire fighting attack route deployment information, the meteorological information includes wind speed and wind direction, and determining a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the type of hazardous chemicals is a harmful gas or that the hazardous chemicals can produce harmful gases; determining the cutting-in direction of the fire fighting route according to the terrain data and the fire spread direction; generating a first multi-layer surrounding fire fighting route according to the combustion range and the leakage range, where the first multi-layer surrounding fire fighting route is used to form a first combustion area isolation belt range and a first core fire source extinguishing range; and generating first fire fighting attack route deployment information according to the cutting-in direction and the first multi-layer surrounding fire fighting route.

[0008] In some embodiments, the fire route deployment information includes fire attack route deployment information, the meteorological information includes wind speed, wind direction, and rainfall, the meteorological information includes wind speed and wind direction, and determining the fire extinguishing plan according to the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the hazardous chemical type is liquid; determining the preset diffusion range of the hazardous chemical according to the rainfall, where the preset diffusion range includes the leakage range; determining the cut-in direction of the fire extinguishing route according to the terrain data and the fire spread direction; generating a second multi-layer surrounded fire extinguishing route according to the combustion range and the preset diffusion range, where the second multi-layer surrounded fire extinguishing route is used to form a second peripheral leakage control area, a second combustion area isolation belt range, and a second core fire source extinguishing range; generating second fire attack route deployment information according to the cut-in direction and the second multi-layer surrounded fire extinguishing route.

[0009] In some embodiments, the fire route deployment information includes fire retreat route deployment information, and determining the fire extinguishing plan according to the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: obtaining the vital sign data and positioning information of the smart wearable device; determining the safety factor of the firefighter according to at least one of the vital sign data, the positioning information, and the cut-in direction; detecting that the safety factor is lower than a preset safety threshold; generating the fire retreat route deployment information according to the hazardous chemical type, the terrain data, the combustion range, and the leakage range.

[0010] In some embodiments, the calculation process of the safety factor is obtained by using at least one of the following methods: calculating the difference between the vital sign data and the preset vital sign data; or calculating the relative position of the positioning information and the combustion area isolation belt range; or calculating the angular deviation between the cut-in direction and the fire spread direction; or calculating the overlapping range between the combustion range and the combustion area isolation belt range.

[0011] In a second aspect, the present application provides a fire extinguishing device for a hazardous chemical leakage scenario, which is applied to a fire extinguishing system. The fire extinguishing system includes a server, on-site command equipment at a command center, and intelligent wearable equipment for firefighters. The fire extinguishing device includes: a receiving unit, configured to, after detecting the combustion of hazardous chemicals, obtain the type of hazardous chemicals, meteorological information, and terrain information at the fire scene; and obtain the combustion range and the leakage range of the hazardous chemicals; a processing unit, configured to determine a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range, where the fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information; a sending unit, configured to send the fire extinguishing plan to the on-site command equipment; and the receiving unit, configured to, after receiving a confirmation instruction from the on-site command equipment, send the fire extinguishing plan to the intelligent wearable equipment.

[0012] In a third aspect, the present application provides a fire extinguishing system, including a server, on-site command equipment at a command center, and intelligent wearable equipment for firefighters. The server is configured to execute the step instructions in any one of the methods in the first aspect.

[0013] In a fourth aspect, a server includes a processor and a memory. One or more programs are stored on the memory, and the one or more programs are called by the processor to execute the step instructions in any one of the methods in the first aspect.

[0014] It can be seen that in the present application, after the server detects the combustion of hazardous chemicals, it obtains the type of hazardous chemicals, meteorological information, and terrain information at the fire scene; and obtains the combustion range and the leakage range of the hazardous chemicals; determines a fire extinguishing plan according to the type of hazardous chemicals, meteorological information, terrain information, combustion range, and leakage range, where the fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information; sends the fire extinguishing plan to the on-site command equipment; and after receiving a confirmation instruction from the on-site command equipment, sends the fire extinguishing plan to the intelligent wearable equipment. This fire extinguishing plan can accurately select a suitable fire extinguishing agent according to the characteristics of hazardous chemicals, reduce secondary hazards caused by misusing unsuitable fire extinguishing agents, and automatically generate an appropriate fire-fighting manpower configuration plan, avoiding waste or unbalanced allocation of human resources, and intelligently planning the optimal fire-fighting attack route and fire-fighting retreat route, effectively reducing the time for firefighters to be exposed in dangerous areas and reducing the probability of accidents. Therefore, in the present application, a suitable fire extinguishing plan is directly output according to the situation at the hazardous chemical fire scene, and the fire extinguishing plan is sent to the intelligent wearable equipment of each firefighter through the on-site command equipment at the on-site command center, greatly improving the efficiency and accuracy of fire-fighting emergency response and ensuring the scientificity, pertinence, and safety of hazardous chemical fire-fighting operations. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them,

[0016] Figure 1 is a schematic diagram of the scenario of the fire extinguishing system provided by the embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the structure of the server provided by the embodiment of the present application;

[0018] Figure 3 is a schematic diagram of the scenario of another fire extinguishing system provided by the embodiment of the present application;

[0019] Figure 4 is a schematic diagram of the process of a fire extinguishing method in the scenario of dangerous chemical leakage provided by the embodiment of the present application;

[0020] Figure 5 is a schematic diagram of the first multi-layer surrounding fire extinguishing route provided by the present application;

[0021] Figure 6 is a schematic diagram of the second multi-layer surrounding fire extinguishing route provided by the present application;

[0022] Figure 7 is a schematic diagram of the display interface of the fire fighting equipment configuration information provided by the embodiment of the present application;

[0023] Figure 8 is a schematic diagram of the display interface of the fire fighting human resource configuration information provided by the embodiment of the present application;

[0024] Figure 9 is a schematic diagram of the display interface of the fire extinguishing evacuation route provided by the embodiment of the present application;

[0025] Figure 10 is a functional unit structure block diagram of a fire extinguishing device in the scenario of dangerous chemical leakage provided by the embodiment of the present application. Detailed implementation manners

[0026] To enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present application.

[0027] In the description and claims of this application and the above-mentioned drawings, terms such as "first", "second", etc. are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but in some embodiments may also include steps or units not listed, or in some embodiments may also include other steps or units inherent to these processes, methods, products or devices.

[0028] Referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The occurrence of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] The "and / or" in the embodiments of this application describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist simultaneously; B exists alone. Among them, A and B can be singular or plural.

[0030] In the embodiments of this application, the symbol " / " can represent an "or" relationship between the front and back associated objects. In addition, the symbol " / " can also represent a division sign, that is, perform a division operation. For example, A / B can represent A divided by B.

[0031] The "at least one (item)" or its similar expression in the embodiments of this application refers to any combination of these items, including any combination of single item (s) or plural item (s), referring to one or more, and multiple referring to two or more. For example, at least one (item) of a, b or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b and c. Among them, each of a, b, c can be an element or a set containing one or more elements.

[0032] The "equal to" in the embodiments of this application can be used in conjunction with "greater than", applicable to the technical solutions adopted when greater than, and can also be used in conjunction with "less than", applicable to the technical solutions adopted when less than. When "equal to" is used in conjunction with "greater than", it is not used in conjunction with "less than"; when "equal to" is used in conjunction with "less than", it is not used in conjunction with "greater than".

[0033] To solve the above problems, the present application provides a fire extinguishing method and device in the scenario of dangerous chemical leakage. An applicable fire extinguishing plan is directly output according to the situation at the dangerous chemical fire site, and the fire extinguishing plan is sent to the intelligent wearable devices of each firefighter through the on-site command equipment of the on-site command center, greatly improving the efficiency and accuracy of fire emergency response, and ensuring the scientificity, pertinence and safety of the dangerous chemical fire extinguishing operation.

[0034] The following uses specific embodiments to elaborate in detail on the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0035] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the scenario of the fire extinguishing system provided by the embodiment of the present application. The fire extinguishing system 1 includes a server 10, on-site command equipment 20, and intelligent wearable devices 30 worn by firefighters. The server 10, on-site command equipment 20, and intelligent wearable devices 30 are all communicatively connected.

[0036] Among them, the server 10 can specifically include a server responsible for data processing on the side of the network platform, which can implement functions such as data transmission and data processing. It can be a physical server, or a server cluster or distributed system composed of multiple physical servers. In this embodiment, the number of servers 10 is not specifically limited. Alternatively, it can also be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, Content Delivery Network (CDN), and big data and artificial intelligence platforms.

[0037] Specifically, see Figure 2 , Figure 2 which is a schematic diagram of the structure of the server provided by the embodiment of the present application. As Figure 2 shown, the server 10 includes a processor 11, a memory 13, a communication interface 12, and one or more programs 131. Among them, the one or more programs 131 are stored in the memory 13 and are configured to be executed by the above-mentioned processor 11. The one or more programs 131 include instructions for executing any step in the following method embodiments.

[0038] Among them, the intelligent wearable device 30 can include a front-end device applied to the user side, which can implement functions such as positioning, data collection, and data transmission. It can be a user device such as a mobile phone with a positioning function, a handheld device, or a wearable device. Preferably,Figure 1 As shown, a wristwatch is presented.

[0039] Among them, the on-site command device 20 may specifically include a front-end device applied to the user side that can implement functions such as data collection and data transmission. It can be user equipment (UE) such as a mobile phone, smart phone, laptop computer, digital radio receiver, personal digital assistant (PDA), tablet computer (PAD), handheld device, vehicle-mounted device, wearable device, computing device or other processing devices connected to a wireless modem, mobile station (MS), mobile terminal, etc.

[0040] Among them, see Figure 3 , the fire extinguishing system 1 further includes a fire situation monitoring device 40. The fire situation monitoring device 40 includes but is not limited to various meteorological sensors (such as temperature, humidity, wind speed sensors, etc.), video surveillance systems, satellite remote sensing monitoring systems, and unmanned aerial vehicle inspection systems. By using a combination of various fire situation monitoring devices 40, the fire situation information can be timely detected, so that the server 10 can timely predict the change trend of the fire situation.

[0041] Please refer to Figure 4 , Figure 4 is a schematic flow chart of a fire extinguishing method in a dangerous chemical leakage scenario provided by an embodiment of the present application, which is applied to the server 10 as shown in Figure 1 shown, as shown in Figure 4 shown, the method includes:

[0042] Step S401, after the server detects the combustion of dangerous chemicals, it obtains the type of dangerous chemicals, meteorological information, and terrain information at the fire scene; and obtains the combustion range and the leakage range of the dangerous chemicals.

[0043] Step S402, the server determines a fire extinguishing plan according to the type of dangerous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range.

[0044] Among them, the fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information.

[0045] In some embodiments, the fire extinguishing plan is determined according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range, including: determining the material of the fire extinguishing agent and the fire extinguishing method according to the type of hazardous chemicals; determining the potential combustion range according to the leakage range and the combustion range, and determining the amount of the fire extinguishing agent according to the potential combustion range; determining the combustion intensity of the hazardous chemicals according to the type of hazardous chemicals and the meteorological information, and determining the release frequency of the fire extinguishing agent according to the combustion intensity; determining the type and quantity of fire-fighting equipment according to the material of the fire-fighting agent, the fire-fighting method and the amount of the fire-fighting agent, the fire-fighting equipment including high-altitude fire-fighting equipment, ground fire-fighting equipment and underground fire-fighting equipment; determining the working frequency of the fire-fighting equipment according to the release frequency; determining the fire-fighting equipment configuration information according to the type, quantity and working frequency of the fire-fighting equipment.

[0046] Among them, different types of hazardous chemicals have unique chemical properties, and their combustion characteristics and degree of danger vary. Therefore, it is necessary to select fire extinguishing agent materials and fire extinguishing methods in a targeted manner to ensure the fire extinguishing effect and avoid causing more serious dangers.

[0047] Among them, common types of hazardous chemicals include flammable liquids, flammable solids, inorganic oxidizers and organic peroxides, poisonous and corrosive substances, compressed gases and liquefied gases, etc.

[0048] For example, for flammable liquids: lighter than water and insoluble in water: such as gasoline, benzene, etc., such liquids cannot be put out with water when they catch fire, otherwise the liquid will float on the water surface and flow with the water, expanding the fire. Generally, fire extinguishers such as foam, dry powder, and carbon dioxide are used to extinguish fires. Foam is used to cover the surface of the liquid to isolate the air, or dry powder and carbon dioxide are used to reduce the oxygen content and temperature to extinguish the fire. For those that are heavier than water and insoluble in water: such as carbon disulfide, water can be used to cover and extinguish the fire. Water can form an isolation layer on its surface to prevent air from contacting the liquid. Foam and dry powder fire extinguishers can also be used to extinguish fires. For those that are soluble in water: such as ethanol, acetone, etc., anti-soluble foam fire extinguishers and dry powder fire extinguishers can be used to extinguish fires. Anti-soluble foam can form a stable foam layer on the surface of such liquids, which plays a role in isolating the air. If necessary, it can also be diluted with a large amount of water to reduce its concentration and reduce the intensity of combustion, but it is necessary to control the water flow to prevent the liquid from spreading.

[0049] For flammable solids: Generally, flammable solids, such as sulfur and naphthalene, can be extinguished with water, foam fire extinguishers, and dry powder fire extinguishers. Water can lower the temperature, and foam and dry powder can isolate the air and prevent the combustion from continuing. For flammable solids that react with water, such as metallic potassium and sodium, it is absolutely forbidden to use water and foam fire extinguishers to extinguish the fire, because they will react violently with water, produce hydrogen and release a lot of heat, which may cause an explosion. Such fires should be covered and extinguished with dry sand, stone powder, etc. to isolate them from the air.

[0050] For inorganic oxidants and organic peroxides: Inorganic oxidants: Such as potassium chlorate, potassium permanganate, etc. When such substances catch fire, water, foggy water, sand, etc. can be used to extinguish the fire. However, some oxidants may explode under conditions such as heat and impact. When extinguishing the fire, keep a safe distance and avoid direct impact. Organic peroxides: Such as benzoyl peroxide, etc. Due to their extremely unstable nature, they are prone to decomposition and explosion when exposed to heat, friction, impact, etc. When extinguishing the fire, a large amount of water should be used for cooling, and at the same time, covered with sand, etc. to prevent further decomposition and combustion.

[0051] For poisonous and corrosive substances: Poisonous substances: When extinguishing the fire, the appropriate fire extinguishing agent should be selected according to their specific properties. Generally speaking, water, foam, dry powder and other fire extinguishers can be used to extinguish the fire. However, if highly poisonous substances such as cyanides catch fire, the fire-fighting personnel must wear professional gas masks to prevent poisoning. Corrosive substances: For acidic corrosive substances, such as sulfuric acid, hydrochloric acid, etc., alkaline substances such as baking soda, lime, etc. can be used for neutralization, but it should be noted that the neutralization reaction may generate heat and gas, and careful operation is required. For alkaline corrosive substances, such as sodium hydroxide, potassium hydroxide, etc., acidic substances such as boric acid can be used for neutralization. Under the condition of ensuring safety, a large amount of water can also be used for flushing and dilution, but it is necessary to prevent the spread of the corrosive liquid and cause environmental pollution.

[0052] For compressed gases and liquefied gases: Combustible gases: Such as hydrogen, methane, etc. If a leakage fire occurs, the gas source should be cut off first to make the flame go out by itself. If the gas source cannot be cut off, dry powder, carbon dioxide and other fire extinguishers can be used to extinguish the fire, and at the same time, a large amount of water is used to cool the burning container and pipeline to prevent the container from exploding due to heat. Combustion-supporting gases: Such as oxygen, chlorine, etc., which do not burn by themselves but can support combustion. When such gases leak and catch fire, the cooling method is mainly adopted. Water is used to cool the leaking container and pipeline to reduce the temperature, prevent the container from bursting, and at the same time, try to close the valve to cut off the gas leakage source.

[0053] Therefore, in this embodiment, different hazardous chemicals have different chemical properties, combustion characteristics and degrees of danger. By determining the type of hazardous chemicals, the fire extinguishing agent and the fire extinguishing method can be accurately matched. Ensure that the fire extinguishing operation will not cause more serious secondary accidents due to the selection of inappropriate fire extinguishing agents or fire extinguishing methods.

[0054] Among them, the potential combustion range is the area where the fire is estimated to spread after comprehensively considering the current combustion range and the leakage range. Accurately determining the potential combustion range helps to reasonably calculate the required amount of fire extinguishing agent, ensuring that there is enough fire extinguishing agent to extinguish the fire and avoiding wasting resources.

[0055] Exemplarily, assume that the hazardous chemical is methanol, the leakage area is a circular area with a diameter of 10 meters, and the current combustion area is a circular area with a diameter of 5 meters. Considering the volatility and flammability of methanol, as well as the surrounding environmental factors (such as wind direction, terrain, etc.), it is estimated that the potential combustion area may expand to a circular area with a diameter of 20 meters. According to this potential combustion area, combined with the fire extinguishing experience data of methanol fires (such as X liters of foam fire extinguishing agent required per square meter), the quantity of foam fire extinguishing agent required is calculated.

[0056] Among them, the type of hazardous chemical determines its basic combustion characteristics, while meteorological information such as temperature, humidity, wind speed, wind direction, rainfall, etc. will have a significant impact on the combustion process, thereby changing the combustion intensity. Different combustion intensities require different action frequencies of the fire extinguishing agent during fire extinguishing to maintain an effective fire extinguishing effect.

[0057] In specific implementation, when the wind speed is small and the change in combustion intensity is small, the fire extinguishing operation can be carried out more concentratedly during fire extinguishing, and the fire extinguishing agent can act more effectively on the combustion area. When the wind speed is large, it will cause the fire to spread rapidly and the combustion area is likely to expand. During fire extinguishing, fire extinguishing forces need to be arranged in a larger range in the upwind direction, and the working power of the fire extinguishing agent also needs to be increased to make it have stronger coverage, wind resistance, and fire extinguishing capabilities. High temperature and dryness will accelerate the volatilization and diffusion of hazardous chemicals, make the combustion more intense, and the leakage area may expand. It is necessary to increase the coverage thickness and frequency of the fire extinguishing agent. Low temperature and high humidity may affect the performance of some fire extinguishing agents. For example, the stability of foam may decrease, and the spraying distance and effect of dry powder may be affected. At this time, it may be necessary to increase the dispensing frequency of the fire extinguishing agent to reduce the negative impact of meteorological conditions on the fire extinguishing agent, or select a fire extinguishing agent more suitable for low temperature environments. A certain amount of rainfall can help cool the burning substances and dilute some water-soluble hazardous chemicals, but it may cause the leaked substances to spread with the rainwater, expanding the pollution range. Adjust the usage amount and dispensing frequency of the fire extinguishing agent according to the type of hazardous chemical to reduce the negative impact of rainfall on fire extinguishing.

[0058] Therefore, in this embodiment, the combustion intensity of the hazardous chemical is jointly affected by its own characteristics and meteorological conditions. By real-time monitoring of meteorological information, determining the combustion intensity in combination with the chemical type, and then adjusting the dispensing frequency of the fire extinguishing agent, the fire extinguishing operation can adapt to the change of the fire situation. It avoids the ineffective dispensing or insufficient dispensing of the fire extinguishing agent, improves the fire extinguishing efficiency, and reduces the losses and hazards caused by the fire.

[0059] In summary, different fire extinguishing agent materials correspond to different types of fire-fighting equipment. In addition, different fire extinguishing methods may require some auxiliary fire-fighting equipment. For example, aerial fire extinguishing requires lift platforms, tower cranes, etc. Therefore, the type of fire-fighting equipment required is determined by comprehensively considering the fire extinguishing agent material and the fire extinguishing method. The quantity of the fire extinguishing agent can determine the quantity of the fire-fighting equipment. The dispensing frequency of the fire extinguishing agent determines the dispensing frequency of the fire-fighting equipment. By synthesizing these factors, the configuration information of the fire-fighting equipment can be accurately determined to ensure that the fire-fighting equipment meets the fire extinguishing requirements.

[0060] Exemplarily, if it is determined to use foam fire extinguishing agent and the fire extinguishing method is spraying with a foam gun, and it is calculated that 5,000 liters of foam fire extinguishing agent are required and the dispensing frequency is continuous spraying. Then the fire-fighting equipment configuration information may include: equipping 5 foam fire trucks, each fire truck is equipped with 2 foam guns, the flow rate of each foam gun can meet the requirement of spraying the corresponding quantity of foam fire extinguishing agent within the specified time, and at the same time ensuring that the storage capacity of the foam liquid in the fire truck is sufficient, as well as supporting water supply equipment and power devices, etc., to ensure the smooth progress of the entire fire extinguishing process.

[0061] In some embodiments, the determining the fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range further includes: determining a preset diffusion range according to the type of hazardous chemicals, the leakage range and the meteorological information; determining the number of firefighters according to the preset diffusion range and the quantity of the fire-fighting equipment; determining the types of firefighters according to the types of the fire-fighting equipment; and determining the fire-fighting manpower configuration information according to the number of firefighters and the types of firefighters.

[0062] Among them, the physical and chemical properties of hazardous chemicals determine the possibility and manner of their diffusion. The leakage range is the starting range of diffusion, and meteorological information, such as wind direction, wind speed, rainfall, etc., has a key impact on the diffusion direction and speed of hazardous chemicals. By synthesizing these factors, the area where hazardous chemicals may diffuse, that is, the preset diffusion range, can be estimated more accurately.

[0063] In actual implementation, it is generally difficult to prevent the diffusion of gaseous hazardous chemicals, and it is also difficult for solid hazardous chemicals to diffuse. Only liquid hazardous chemicals will have a difference between the diffusion range and the leakage range due to the influence of rainfall. Specifically, the more the rainfall, the larger the preset diffusion range of liquid hazardous chemicals, and the less the rainfall, the smaller the preset diffusion range of liquid hazardous chemicals, and the closer it is to the leakage range. The larger the preset diffusion range, the more firefighters are needed to block its diffusion.

[0064] Among them, the combustion range determines the number of firefighters required at the core fire source, the preset diffusion range determines the number of firefighters required for intercepting the peripheral fire or leakage, and the quantity of fire-fighting equipment can also reflect the number of firefighters required. By synthesizing the number of firefighters required at the core fire source, the number of firefighters required for intercepting the peripheral fire or leakage, and the quantity of fire-fighting equipment, the total number of firefighters required can be reasonably determined to ensure sufficient manpower support for the fire extinguishing operation.

[0065] In addition, different types of fire-fighting equipment have different operation requirements and technical characteristics, and firefighters with corresponding professional skills and knowledge are required to operate them. For example, foam fire trucks require firefighters who master skills such as foam mixture ratio and spraying operation; detection equipment such as gas detectors requires firefighters who are familiar with the instrument principle and operation method to use.

[0066] After determining the number and types of firefighters, different types of firefighters are combined according to a certain ratio and task division to form detailed fire-fighting manpower allocation information. This can enable each firefighter to play a role in a suitable position, achieve the optimal allocation of human resources, and improve the overall fire extinguishing and emergency handling efficiency.

[0067] In some embodiments, the fire-fighting route deployment information includes fire attack route deployment information, the meteorological information includes wind speed and wind direction, and determining the fire extinguishing plan according to the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the hazardous chemical type is a harmful gas or the hazardous chemical can produce a harmful gas; determining the cutting-in direction of the fire extinguishing route according to the terrain data and the fire spread direction; generating a first multi-layer surrounded fire extinguishing route according to the combustion range and the leakage range, where the first multi-layer surrounded fire extinguishing route is used to form a first combustion area isolation belt range and a first core fire source extinguishing range; generating first fire attack route deployment information according to the cutting-in direction and the first multi-layer surrounded fire extinguishing route.

[0068] Among them, the wind direction directly determines the direction of fire spread, and the wind speed affects the speed of fire spread. Starting from the leakage area and with the wind direction as the guiding direction, combined with the wind speed, the fire spread direction can be determined.

[0069] Among them, when the hazardous chemical is a harmful gas or can produce a harmful gas, its diffusion will cause great harm to personnel and the environment. Therefore, the server determines the cutting-in direction of the fire extinguishing route according to the terrain and the fire spread direction to ensure that firefighters enter from the side wind or upwind direction to avoid toxic smoke.

[0070] Wherein, when the hazardous chemical is a harmful gas or can generate harmful gases, multiple-layer surrounding fire extinguishing routes are generated according to the combustion range and the leakage range. The multiple-layer surrounding fire extinguishing routes are used to form the range of the combustion area isolation zone and the range for extinguishing the core fire source. The range of the combustion area isolation zone is used to ensure the safety of firefighters and maintain a safe distance from the core fire source. The range for extinguishing the core fire source is used to indicate the range for discharging the fire extinguishing agent.

[0071] When specifically implemented, see Figure 5 , Figure 5 which is a schematic diagram of the first multiple-layer surrounding fire extinguishing route provided by this application, including the combustion range, the leakage range, the fire spread direction F1, the cutting-in direction F2, and the generated first combustion area isolation zone range and the first core fire source extinguishing range.

[0072] It can be seen that in the embodiment of this application, by integrating the cutting-in direction and the multiple-layer surrounding fire extinguishing route, a clear and definite fire extinguishing attack route can be provided for firefighters, making the fire extinguishing operation more orderly and efficient, avoiding chaos and repetitive operations, and improving the coordination and success rate of the fire extinguishing operation.

[0073] In some embodiments, the fire fighting route deployment information includes the fire extinguishing attack route deployment information, the meteorological information includes wind speed, wind direction, and rainfall, the meteorological information includes wind speed and wind direction. Determining the fire extinguishing plan according to the type of hazardous chemical, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the type of hazardous chemical is liquid; determining the preset diffusion range of the hazardous chemical according to the rainfall, and the preset diffusion range includes the leakage range; determining the cutting-in direction of the fire extinguishing route according to the terrain data and the fire spread direction; generating a second multiple-layer surrounding fire extinguishing route according to the combustion range and the preset diffusion range, and the second multiple-layer surrounding fire extinguishing route is used to form a second outer leakage control area, a second combustion area isolation zone range, and a second core fire source extinguishing range; generating second fire extinguishing attack route deployment information according to the cutting-in direction and the second multiple-layer surrounding fire extinguishing route.

[0074] Wherein, when the hazardous chemical is liquid, rainfall will affect the diffusion of the liquid hazardous chemical. Rainwater may dilute and wash the hazardous chemical, expanding its diffusion range or changing the diffusion direction.

[0075] Therefore, in this embodiment, when the hazardous chemical is a liquid, the generated multi-layer enclosed fire extinguishing route further includes a peripheral leakage control area for blocking the leakage of the hazardous chemical, such as arranging sandbag damming facilities to control the leakage of the hazardous chemical. The range of the combustion area isolation belt is used to ensure the safety of firefighters and maintain a safe distance from the core fire source, and the range of the core fire source extinguishing area is used to indicate the range of fire extinguishing agent delivery.

[0076] During specific implementation, see Figure 6 , Figure 6 which is a schematic diagram of the second multi-layer enclosed fire extinguishing route provided by this application, including the combustion range, the leakage range, the fire spread direction F1, the cut-in direction F2, and the generated second peripheral leakage control area, the second combustion area isolation belt range, and the second core fire source extinguishing range.

[0077] It can be seen that in this embodiment, the firefighters set up a three-layer enclosed fire extinguishing route, effectively controlling the fire spread and the leakage of hazardous chemicals, improving the fire extinguishing efficiency, and reducing the fire loss and environmental pollution.

[0078] In some embodiments, the fire fighting route deployment information includes fire fighting retreat route deployment information. The determination of the fire fighting plan according to the type of hazardous chemical, the meteorological information, the terrain information, the combustion range, and the leakage range further includes: obtaining the vital sign data and positioning information of the intelligent wearable device; determining the safety factor of the firefighter according to at least one of the vital sign data, the positioning information, and the cut-in direction; detecting that the safety factor is lower than a preset safety threshold; generating the fire fighting retreat route deployment information according to the type of hazardous chemical, the terrain data, the combustion range, and the leakage range.

[0079] Among them, the intelligent wearable device worn by the firefighter can collect and transmit their vital sign data (such as heart rate, blood pressure, blood oxygen saturation, etc.) and positioning information in real time. By establishing a communication connection with the intelligent wearable device, the server or the command center can obtain these key data to understand the physical condition and specific location of the firefighter at the fire scene in real time.

[0080] Comprehensively considering factors such as vital sign data, positioning information, and cut-in direction, the safety factor of the firefighter is calculated through a preset algorithm or model. For example, abnormal vital signs (such as too high heart rate, too low blood oxygen), being in a dangerous area (such as near the fire source, toxic gas leakage point), or an unfavorable cut-in direction for quick evacuation, etc., will all reduce the safety factor.

[0081] In specific implementation, in some embodiments, the calculation process of the safety factor is obtained by using at least one of the following methods: calculating the difference between the vital sign data and the preset vital sign data; or calculating the relative position of the positioning information and the range of the combustion area isolation zone; or calculating the angular deviation between the cutting-in direction and the fire spreading direction; or calculating the overlapping range between the combustion range and the range of the combustion area isolation zone.

[0082] Among them, when firefighters are in a normal working state, their vital signs are within a certain range. When facing fire hazards, their vital signs will change. By calculating the difference between the actual vital sign data and the preset normal data, it can intuitively reflect the pressure and danger level that the firefighters' bodies bear. The larger the difference, the higher the safety risk and the lower the safety factor. When the difference is too large, the server needs to send a retreat instruction to the intelligent wearable device of this firefighter in a timely manner, and the retreat instruction includes the retreat route.

[0083] Among them, the combustion area isolation zone is a safety area set to control the spread of fire. The relative relationship between the position of the firefighter and the isolation zone can reflect the degree of direct threat of the fire to them. The closer to the combustion area and the farther from the isolation zone, the higher the safety risk and the lower the safety factor. When the positioning information of the firefighter leaves the range of the isolation zone and enters the combustion area, the server needs to send a retreat instruction to the intelligent wearable device of this firefighter in a timely manner, and the retreat instruction includes the retreat route.

[0084] Among them, the angular relationship between the fire extinguishing cutting-in direction of the firefighter and the fire spreading direction affects the degree of threat they face from the fire. When the included angle between the cutting-in direction and the fire spreading direction is small, the firefighter is more vulnerable to the direct impact of the fire, and the safety risk is high; when the included angle is large, it is relatively safe. When the included angle is too small, the server needs to send a retreat instruction to the intelligent wearable device of this firefighter in a timely manner, and the retreat instruction includes the retreat route.

[0085] Among them, the overlapping situation between the combustion range and the isolation zone range reflects the degree of breakthrough of the fire on the isolation zone and the safety risk of the firefighters working within the isolation zone. The larger the overlapping range, the greater the threat of the fire to the firefighters within the isolation zone. When the combustion range of the fire starts to overlap with the isolation zone range, the server needs to send a retreat instruction to the intelligent wearable device of this firefighter in a timely manner, and the retreat instruction includes the retreat route.

[0086] It should be noted that the above several ways of determining the safety factor can be used alone, combined, or other appropriate ways can be used to determine the safety factor, and the present application does not make specific restrictions on this.

[0087] Among them, when it is detected that the safety factor is lower than the preset safety threshold, it indicates that the firefighter is in a relatively high danger state and corresponding measures need to be taken immediately, such as arranging a retreat.

[0088] Among them, the evacuation route is planned by integrating information such as the characteristics of hazardous chemicals (such as toxicity, flammability, and explosiveness), terrain data (such as road distribution, building layout, etc.), combustion range, and leakage range to form a safe and feasible fire-fighting evacuation route. The route should avoid dangerous areas and consider the passability of the terrain to ensure that firefighters can evacuate quickly and safely. Exemplarily, in a liquid ammonia leakage fire, according to the toxicity and diffusion range of liquid ammonia, as well as the terrain at the scene (there are rivers, roads, and buildings in the vicinity), the generated evacuation route guides firefighters to first move towards a direction with higher terrain and good ventilation, and then evacuate to a safe area along a wide road.

[0089] It can be seen that in this embodiment, it is possible to comprehensively integrate the vital sign data, positioning information, cutting-in direction, combustion range, and isolation zone range of firefighters to timely detect the dangerous situations faced by firefighters, trigger the subsequent emergency response mechanism, avoid firefighters from being harmed due to the failure to detect dangerous situations in a timely manner, and improve the safety of fire-fighting operations.

[0090] Step S403, the server sends the fire-fighting plan to the on-site command device.

[0091] Step S404, after the server receives the confirmation instruction from the on-site command device, it sends the fire-fighting plan to the intelligent wearable device.

[0092] Among them, after receiving the fire-fighting plan, the intelligent wearable device displays the fire-fighting equipment configuration information on the intelligent wearable device, such as Figure 7 shown, including displaying the type of hazardous chemicals, the material of the fire extinguishing agent, the quantity of the fire extinguishing agent, the required fire-fighting equipment, the fire-fighting method, the material for blocking leakage, etc. Also, it displays the fire-fighting manpower configuration information on the intelligent wearable device, such as Figure 8 shown, including displaying the number of firefighters and the specific types of firefighters. And, it displays the multi-layer encircling fire-fighting route as shown in Figure 5 or 6 according to the fire-fighting route deployment information, and when the safety factor is relatively low, it displays the fire-fighting evacuation route as shown in Figure 9 shown.

[0093] It can be seen that in this application, after the server detects the combustion of hazardous chemicals, it obtains the type of hazardous chemicals, meteorological information, and terrain information at the fire scene; and obtains the combustion range and the leakage range of hazardous chemicals; determines a fire extinguishing plan based on the type of hazardous chemicals, meteorological information, terrain information, combustion range, and leakage range. The fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information; sends the fire extinguishing plan to the on-site command device; and upon receiving the confirmation instruction from the on-site command device, sends the fire extinguishing plan to the intelligent wearable device. This fire extinguishing plan can accurately select a suitable fire extinguishing agent according to the characteristics of hazardous chemicals, reducing the secondary hazards caused by the misuse of unsuitable fire extinguishing agents. Moreover, it automatically generates an appropriate fire-fighting manpower configuration plan, avoiding the waste or unbalanced allocation of human resources. In addition, it intelligently plans the optimal fire-fighting attack route and fire-fighting retreat route, effectively reducing the time that firefighters are exposed to dangerous areas and lowering the probability of accidents. Therefore, in this application, a suitable fire extinguishing plan is directly output based on the situation at the hazardous chemical fire scene, and the fire extinguishing plan is sent to the intelligent wearable device of each firefighter through the on-site command device of the on-site command center, greatly improving the efficiency and accuracy of fire-fighting emergency response and ensuring the scientific nature, pertinence, and safety of hazardous chemical fire-fighting operations.

[0094] The above mainly introduced the solution of the embodiment of this application from the perspective of the execution process on the method side. It can be understood that in order for the server to implement the above functions, it includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combined with the units and algorithm steps of each example described in the embodiments provided in this article, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0095] The embodiment of this application can divide the functions of the server according to the above method examples. For example, each function unit can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of this application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0096] In the case of adopting an integrated unit, please refer to Figure 10 , Figure 10This is a functional unit structure diagram of a fire extinguishing device in a scenario of hazardous chemical leakage provided by an embodiment of the present application. The fire extinguishing device 100 includes:

[0097] A receiving unit 1001, configured to obtain the type of hazardous chemicals, meteorological information, and terrain information at the fire scene after detecting the combustion of hazardous chemicals; and obtain the combustion range and the leakage range of hazardous chemicals.

[0098] A processing unit 1002, configured to determine a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range. The fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information.

[0099] A sending unit 1003, configured to send the fire extinguishing plan to the on-site command device.

[0100] The receiving unit 1001 is configured to, upon receiving the confirmation instruction from the on-site command device, send the fire extinguishing plan to the intelligent wearable device.

[0101] It can be seen that in the present application, after the server detects the combustion of hazardous chemicals, it obtains the type of hazardous chemicals, meteorological information, and terrain information at the fire scene; and obtains the combustion range and the leakage range of hazardous chemicals; determines a fire extinguishing plan according to the type of hazardous chemicals, meteorological information, terrain information, combustion range, and leakage range. The fire extinguishing plan includes fire-fighting equipment configuration information, fire-fighting manpower configuration information, and fire-fighting route deployment information; sends the fire extinguishing plan to the on-site command device; upon receiving the confirmation instruction from the on-site command device, sends the fire extinguishing plan to the intelligent wearable device. This fire extinguishing plan can accurately select a suitable fire extinguishing agent according to the characteristics of hazardous chemicals, reduce the secondary hazards caused by the misuse of unsuitable fire extinguishing agents, and automatically generate an appropriate fire-fighting manpower configuration plan, avoiding the waste or unbalanced configuration of human resources, and intelligently planning the optimal fire-fighting attack route and fire-fighting retreat route, effectively reducing the time for firefighters to be exposed in the dangerous area and reducing the probability of accidents. Therefore, in the present application, a suitable fire extinguishing plan is directly output based on the situation at the hazardous chemical fire scene, and the fire extinguishing plan is sent to the intelligent wearable device of each firefighter through the on-site command device of the on-site command center, greatly improving the efficiency and accuracy of fire-fighting emergency response and ensuring the scientificity, pertinence, and safety of the hazardous chemical fire-fighting operation.

[0102] In some embodiments, the processing unit 1002 determines a fire extinguishing plan based on the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range, including: determining the fire extinguishing agent material and the fire extinguishing method according to the hazardous chemical type; determining the potential combustion range according to the leakage range and the combustion range, and determining the amount of the fire extinguishing agent according to the potential combustion range; determining the combustion intensity of the hazardous chemical according to the hazardous chemical type and the meteorological information, and determining the delivery frequency of the fire extinguishing agent according to the combustion intensity; determining the types and quantities of fire-fighting equipment according to the fire extinguishing agent material, the fire extinguishing method, and the amount of the fire extinguishing agent, where the fire-fighting equipment includes aerial fire-fighting equipment, ground fire-extinguishing equipment, and underground fire-extinguishing equipment; determining the working frequency of the fire-fighting equipment according to the delivery frequency; and determining the fire-fighting equipment configuration information according to the types, quantities, and working frequencies of the fire-fighting equipment.

[0103] In some embodiments, the processing unit 1002 determines a fire extinguishing plan based on the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range, further including: determining a preset diffusion range according to the hazardous chemical type, the leakage range, and the meteorological information; determining the number of firefighters according to the preset diffusion range and the quantity of the fire-fighting equipment; determining the types of firefighters according to the types of the fire-fighting equipment; and determining the fire-fighting manpower configuration information according to the number of firefighters and the types of firefighters.

[0104] In some embodiments, the fire-fighting route deployment information includes fire attack route deployment information, the meteorological information includes wind speed and wind direction, and the processing unit 1002 determines a fire extinguishing plan based on the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range, further including: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the hazardous chemical type is a harmful gas or the hazardous chemical can generate harmful gases; determining the cutting-in direction of the fire-fighting route according to the terrain data and the fire spread direction; generating a first multi-layer surrounded fire-fighting route according to the combustion range and the leakage range, where the first multi-layer surrounded fire-fighting route is used to form a first combustion area isolation belt range and a first core fire source extinguishing range; and generating first fire attack route deployment information according to the cutting-in direction and the first multi-layer surrounded fire-fighting route.

[0105] In some embodiments, the fire route deployment information includes fire attack route deployment information, the meteorological information includes wind speed, wind direction, and rainfall, the meteorological information includes wind speed and wind direction, and the processing unit 1002 determines a fire extinguishing plan according to the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range, further including: determining the fire spread direction according to the leakage area, the wind direction, and the wind speed; detecting that the hazardous chemical type is liquid; determining a preset diffusion range of the hazardous chemical according to the rainfall, where the preset diffusion range includes the leakage range; determining the cutting-in direction of the fire extinguishing route according to the terrain data and the fire spread direction; generating a second multi-layer enclosed fire extinguishing route according to the combustion range and the preset diffusion range, where the second multi-layer enclosed fire extinguishing route is used to form a second outer leakage control area, a second combustion area isolation belt range, and a second core fire source extinguishing range; and generating second fire attack route deployment information according to the cutting-in direction and the second multi-layer enclosed fire extinguishing route.

[0106] In some embodiments, the fire route deployment information includes fire retreat route deployment information, and the processing unit 1002 determines a fire extinguishing plan according to the hazardous chemical type, the meteorological information, the terrain information, the combustion range, and the leakage range, further including: obtaining the vital sign data and positioning information of the intelligent wearable device; determining the safety factor of the firefighter according to at least one of the vital sign data, the positioning information, and the cutting-in direction; detecting that the safety factor is lower than a preset safety threshold; and generating the fire retreat route deployment information according to the hazardous chemical type, the terrain data, the combustion range, and the leakage range.

[0107] In some embodiments, the calculation process of the safety factor is obtained by using at least one of the following methods: calculating the difference between the vital sign data and the preset vital sign data; or calculating the relative position of the positioning information and the combustion area isolation belt range; or calculating the angular deviation between the cutting-in direction and the fire spread direction; or calculating the overlapping range between the combustion range and the combustion area isolation belt range.

[0108] The embodiments of the present application provide a computer-readable storage medium, on which computer programs / instructions are stored, and when the computer programs / instructions are executed by a processor, the steps of the method according to any possible embodiment are implemented.

[0109] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0110] In the above embodiments, the descriptions of the various embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] In several embodiments provided by this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical or other forms.

[0112] The units described as separate components above may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0113] In addition, in each embodiment of this application, the various functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0114] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the above methods in various embodiments of this application. The aforementioned memory includes: various media such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), external hard drives, magnetic disks, or optical discs that can store program codes.

[0115] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory. The memory can include: flash drives, read-only memories (English: Read-Only Memory, abbreviated: ROM), random access memories (English: Random Access Memory, abbreviated: RAM), magnetic disks, or optical discs, etc.

[0116] The above has introduced the embodiments of this application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A fire extinguishing method in a hazardous chemical leakage scenario, characterized in that: Applied to a fire extinguishing system, the fire extinguishing system includes a server and on-site command equipment of a command center, and smart wearable equipment of firefighters; the method includes: After detecting the burning of hazardous chemicals, obtain the type of hazardous chemicals and the meteorological and topographic information of the fire scene; and obtain the burning range and the leakage range of hazardous chemicals; Determine a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range, wherein the fire extinguishing plan includes fire fighting equipment configuration information, fire fighting manpower configuration information, and fire fighting route deployment information; Sending the fire extinguishing plan to the on-site command equipment; After receiving the confirmation instruction from the on-site command device, the fire extinguishing plan is sent to the smart wearable device.

2. The method according to claim 1, characterized in that: The determining of the fire extinguishing scheme according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range includes: Determine the fire extinguishing agent material and fire extinguishing method according to the type of hazardous chemicals; Determine a potential combustion range according to the leakage range and the combustion range, and determine the amount of fire extinguishing agent according to the potential combustion range; Determine the combustion intensity of the hazardous chemical according to the type of hazardous chemical and the meteorological information, and determine the release frequency of the fire extinguishing agent according to the combustion intensity; Determine the type and quantity of fire-fighting equipment according to the material of the fire-extinguishing agent, the fire-extinguishing method, and the amount of the fire-extinguishing agent, wherein the fire-fighting equipment includes high-altitude fire-fighting equipment, ground fire-fighting equipment, and underground fire-fighting equipment; Determining the operating frequency of the fire-fighting equipment according to the delivery frequency; The fire fighting equipment configuration information is determined according to the type, quantity and operating frequency of the fire fighting equipment.

3. The method according to claim 2, characterized in that The determining of the fire extinguishing scheme according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range also includes: Determine a preset diffusion range according to the type of hazardous chemicals, the leakage range, and the meteorological information; Determining the number of firefighters according to the preset diffusion range and the number of firefighting equipment; Determining the type of firefighter based on the type of firefighting equipment; The firefighting manpower configuration information is determined according to the number of firefighters and the types of firefighters.

4. The method according to claim 3, characterized in that The fire route deployment information includes fire attack route deployment information, the meteorological information includes wind speed and wind direction, and the fire extinguishing scheme is determined according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range and the leakage range, and further includes: Determine the direction of fire spread according to the leakage area, the wind direction and the wind speed; It is detected that the type of the hazardous chemical is harmful gas or the hazardous chemical can produce harmful gas; Determine the entry direction of the fire extinguishing route according to the terrain data and the fire spreading direction; Generating a first multi-layer surrounding fire extinguishing route according to the combustion range and the leakage range, wherein the first multi-layer surrounding fire extinguishing route is used to form a first combustion zone isolation zone range and a first core fire source extinguishing range; The first fire-fighting attack route deployment information is generated according to the cut-in direction and the first multi-layer encircling fire-fighting route.

5. The method according to claim 3, characterized in that: The firefighting route deployment information includes firefighting attack route deployment information, the meteorological information includes wind speed, wind direction, and rainfall, the meteorological information includes wind speed and wind direction, and the firefighting plan is determined according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range, and further includes: Determine the direction of fire spread according to the leakage area, the wind direction and the wind speed; The type of the hazardous chemical is detected to be liquid; Determine a preset diffusion range of the hazardous chemical according to the rainfall, wherein the preset diffusion range includes the leakage range; Determining the cutting direction of the fire extinguishing route according to the terrain data and the fire spreading direction; Generate a second multi-layer encircling fire extinguishing route according to the combustion range and the preset diffusion range, wherein the second multi-layer encircling fire extinguishing route is used to form a second peripheral leakage control area, a second combustion zone isolation zone range, and a second core fire source extinguishing range; The second fire-fighting attack route deployment information is generated according to the cutting direction and the second multi-layer encirclement fire-fighting route.

6. The method according to claim 4 or 5, characterized in that: The firefighting route deployment information includes firefighting retreat route deployment information, and the firefighting scheme is determined according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range, and further includes: Obtaining vital sign data and positioning information of the smart wearable device; Determine the safety factor of the firefighter according to at least one of the vital sign data, the positioning information, and the entry direction; detecting that the safety factor is lower than a preset safety threshold; The fire extinguishing and evacuation route deployment information is generated according to the type of hazardous chemicals, the terrain data, the burning range, and the leakage range.

7. The method according to claim 6, characterized in that The safety factor is calculated by at least one of the following methods: Calculating the difference between the vital sign data and the preset vital sign data; or, Calculating the relative position of the positioning information and the range of the combustion zone isolation zone; or, Calculating the angular deviation between the cutting direction and the fire spreading direction; or, Calculate the overlap range between the combustion range and the combustion zone isolation zone range.

8. A fire extinguishing device for hazardous chemical leakage, characterized in that: Applied to a fire extinguishing system, the fire extinguishing system includes a server and on-site command equipment of a command center, and smart wearable equipment for firefighters; the fire extinguishing device includes: The receiving unit is used to obtain the type of hazardous chemicals and the meteorological information and topographic information of the fire scene after detecting the burning of hazardous chemicals; and to obtain the burning range and the leakage range of hazardous chemicals; A processing unit, configured to determine a fire extinguishing plan according to the type of hazardous chemicals, the meteorological information, the terrain information, the combustion range, and the leakage range, wherein the fire extinguishing plan includes fire fighting equipment configuration information, fire fighting manpower configuration information, and fire fighting route deployment information; A sending unit, used for sending the fire extinguishing plan to the on-site command equipment; The receiving unit is used to receive a confirmation instruction from the on-site command device and send the fire extinguishing plan to the smart wearable device.

9. A fire extinguishing system, characterized in that: It includes a server, on-site command equipment of a command center, and smart wearable devices for firefighters, and the server is used to execute the step instructions in the method as described in any one of claims 1-7.

10. A server, characterized in that: The method comprises a processor and a memory, wherein one or more programs are stored in the memory, and the one or more programs are called by the processor to execute the step instructions in the method according to any one of claims 1 to 7.

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