Individual safety equipment performance detection platform for forest fires

Abstract

The application discloses an individual safety equipment performance detection platform for forest fire, and belongs to the technical field of fireproof equipment testing. The application is aimed at solving the problem that there is no detection platform for detecting the overall performance of individual safety protection equipment such as fireproof cover. The application comprises a platform hardware and a detection and evaluation system. In the hardware, a sample mounting table is arranged in the middle of a test table. A plurality of folding support steel frames are arranged on the upper surface of the sample mounting table. A detector mounting hole is arranged on the sample mounting table, and the detector mounting hole is used for mounting temperature sensors and smoke sensors. The temperature sensors are symmetrically arranged at the center. A plurality of mounting plates are arranged on the test table, and the mounting plates form a relatively closed thermal environment space. Each mounting plate is provided with a plurality of mounting holes, and a burning heat source is mounted on the mounting holes through an angle adjusting device. The detection and evaluation system performs performance evaluation by using the ratio of the internal space temperature value to the temperature outside the individual safety equipment at the corresponding space position.

Description

Technical Field

[0001] This invention belongs to the field of fire protection equipment testing technology, specifically relating to a performance testing platform for individual safety and emergency avoidance equipment. Background Technology

[0002] Fires severely impact people's property safety, causing enormous property losses every year. Forest fires, in particular, cause extremely severe damage, especially to the ecosystem. Compared to other types of fires, forest fires are characterized by their large burned area, intense destruction, and extreme difficulty in control, posing a significant threat to individual safety.

[0003] Currently, forest fire-resistant covers are the only emergency self-rescue equipment worn by forest firefighters, playing a crucial role in individual safety during forest fires. However, current personal safety and emergency equipment comes in various forms with vastly different performance characteristics. In the complex environment of a forest fire, the heat sources that cause harm to the human body vary, as do the ways heat is transferred. Therefore, fire-resistant covers need to possess multiple thermal protection properties, including flame retardancy, heat insulation, resistance to heat radiation, and integrity. The LY / T2583-2016 standard for "Forest Fire-Resistant Covers" lacks a method and testing platform for assessing and measuring the overall safety protection performance of fire-resistant covers. Accurately and comprehensively testing and evaluating the thermal protection performance of fire-resistant covers is a crucial foundation for promoting the research and application of emergency self-rescue equipment. Current testing of fire-resistant equipment generally focuses on the flame retardancy and heat insulation capabilities of fire-resistant materials, but this is far from sufficient for assessing the overall safety protection performance of fire-resistant covers, especially in the context of forest fires.

[0004] While it's possible to create experimental conditions where a dummy is surrounded by flames using a flame-spreading device, and to simulate human skin sensation using heat flux sensors on the dummy to collect and process data for analyzing skin burns, current research remains largely theoretical. Very few research institutions or organizations are actually engaged in experimental testing and practical application of fire-resistant equipment, resulting in a scarcity of relevant theoretical and practical data. Ensuring the accuracy and comprehensiveness of the testing environment and data monitoring, and making skin burn simulations and analyses more realistic, remains a major challenge in testing the overall safety performance of fire-resistant shields. Summary of the Invention

[0005] This invention aims to address the current lack of a testing platform that can comprehensively test the safety performance of individual protective devices such as fire shields.

[0006] A performance testing platform for individual safety and refuge equipment used in forest fires includes: a test bench (100), a mounting plate (101), a combustion heat source (102), a sample mounting platform (200), a folding support steel frame (201), a detector mounting hole (202), a temperature sensor (401), and a smoke sensor (402).

[0007] A sample mounting platform (200) is provided in the middle of the test bench (100);

[0008] Multiple folding support steel frames (201) are provided on the upper surface of the sample mounting platform (200) to support the test sample to be installed;

[0009] The sample mounting stage is provided with detector mounting holes (202) for mounting temperature sensor (401) and smoke sensor (402). The detection ends of temperature sensor (401) and smoke sensor (402) protrude from the upper surface of the sample mounting stage (200). Multiple temperature sensors are provided and are symmetrically arranged with respect to the center of the sample mounting stage. The detection ends of the multiple temperature sensors are at different heights relative to the upper surface of the sample mounting stage, but the detection ends of two temperature sensors symmetrically arranged with respect to the center of the sample mounting stage must be at the same height relative to the upper surface of the sample mounting stage. One or more smoke sensors are provided.

[0010] Multiple mounting plates (101) are set on the test bench (100). The multiple mounting plates (101) form a relatively closed thermal environment space. Each mounting plate (101) is provided with multiple mounting holes. The combustion heat source (102) is installed on the mounting hole through an angle adjustment device.

[0011] This invention provides a testing platform for the overall testing of the safety protection performance of individual protective equipment such as fire shields, which can realize the overall testing of individual safety protection performance.

[0012] Furthermore, the platform also includes a lifting mechanism (300), and the sample mounting platform (200) is driven to lift by the lifting mechanism (300).

[0013] The testing platform of this solution has the advantage of being easy to operate.

[0014] Furthermore, according to claim 1, the performance testing platform for individual safety and refuge equipment for forest fires is characterized in that the two sides of the sample mounting platform (200) along the width and / or length direction are inclined surfaces, or the circumferential surface of the sample mounting platform (200) is an flared inclined surface, the surface of the test platform (100) in contact with the sample mounting platform (200) is an inclined surface, and it forms a tight closed structure with the inclined surface of the sample mounting platform.

[0015] This scheme ensures that when the combustion heat source sprays flame at a specific angle onto the sample, the flame or flame radiation heat will not affect the area below the platform, and also ensures energy utilization efficiency.

[0016] Furthermore, according to claim 3, the performance testing platform for individual safety and disaster avoidance equipment for forest fires is characterized in that, in the state where the test platform (100) and the sample mounting platform (200) form a tight closed structure, the upper surface of the sample mounting platform (200) is higher than the upper surface of the test platform (100).

[0017] Furthermore, the angle adjustment device is a universal joint.

[0018] This solution features a universal ball joint that is easy to operate and has low cost.

[0019] Furthermore, when the platform is in use, the combustion heat source (102) deflects at a certain angle in the same direction.

[0020] This method makes it easier for the test sample to be radiated by heat convection on the outside, so that the test environment is closer to the real situation. It also makes the internal environment of the test sample more closely resemble the real situation, thereby achieving more accurate performance testing of individual safety and emergency equipment such as fire shields.

[0021] Furthermore, the aforementioned performance testing platform for individual safety and evacuation equipment used in forest fires also includes a performance testing and evaluation system for individual safety and evacuation equipment, the system comprising:

[0022] Flame control unit: used to control the amount of fire from the combustion heat source;

[0023] Outer area temperature calculation unit: Calculates the total heat of the area enclosed by multiple mounting plates based on the fire volume of the combustion heat source, and then calculates and / or simulates the temperature outside the individual safety and avoidance equipment;

[0024] Temperature data acquisition unit: used to acquire data from all temperature sensors;

[0025] Smoke data acquisition unit: used to acquire smoke concentration data c from the smoke sensor; if only one smoke sensor is set, the smoke concentration data is obtained directly; if multiple smoke sensors are set, the average value is taken.

[0026] Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety and avoidance equipment based on the data from all temperature sensors, and obtain the temperature value of each space location inside the individual safety and avoidance equipment;

[0027] Performance evaluation unit: First, determine the ratio R between the local internal space temperature value and / or the overall internal space temperature value and the temperature outside the individual safety and avoidance equipment at the corresponding spatial location, and then conduct performance evaluation based on the ratio R.

[0028] This solution provides a testing platform for the overall testing of individual safety protection performance, such as fire shields. It not only enables the overall testing of individual safety protection performance, but also provides a method for evaluating the performance of individual safety and avoidance equipment. This method can effectively evaluate the overall physical factors of individual safety and avoidance equipment, and is not only objective, but also has a relatively consistent measurement standard. It avoids the test and evaluation bias caused by subjective factors, making the test and evaluation of individual safety and avoidance equipment more accurate.

[0029] Furthermore, the temperature field reconstruction process includes:

[0030] S1. Discretize the internal space of individual safety and avoidance equipment. Record the known spatial location of the temperature sensor detection end as the known spatial location, and use the temperature sensor value at the known spatial location as the corresponding spatial location x. i Temperature value

[0031] S2, obtained from S1 Interpolation is used to interpolate the values ​​of all discretized spatial locations to obtain the temperature value for each discretized spatial location.

[0032] S3. Remove the temperature values ​​corresponding to all known spatial locations, and randomly remove some temperature values ​​corresponding to spatial locations obtained through interpolation; denote these locations as the removed locations, and then interpolate them again to obtain the re-interpolated temperature of the removed locations, denoted as .

[0033] S4. Treat the temperature value of each spatial location as a particle and optimize it using the particle swarm optimization algorithm. Repeat step S3 once after each particle optimization. The particle obtained after optimization by the particle swarm optimization algorithm is the optimized temperature value of the corresponding spatial location.

[0034] The objective function used in the optimization process is as follows:

[0035]

[0036] Where, x' i Indicates a known spatial location. x' represents time t i Temperature sensor value at the location, x' represents time t iThe temperature value obtained by re-interpolation at the location.

[0037] Because the internal and external temperatures of personal safety and avoidance equipment are unevenly distributed over a certain period of time in reality, and this unevenness can seriously affect the performance evaluation of personal safety and avoidance equipment in some areas, this solution takes this problem into account and provides a more accurate method for reconstructing the temperature of the internal space of personal safety and avoidance equipment, thus ensuring the accuracy of the determination of the internal temperature of personal safety and avoidance equipment.

[0038] Furthermore, the process of determining the ratio R of the local internal space temperature value and / or the overall internal space temperature value over a period of time to the temperature outside the individual safety and evacuation equipment at the corresponding spatial location includes:

[0039] The local or overall internal space to be evaluated is denoted as x = {x”. i}, where x” represents each discretized spatial location contained within the local or global interior space to be evaluated; then x” is calculated. i Location average value, This represents the temperature value obtained by re-interpolation at x” at time t;

[0040] Based on the position of x”, determine the outer area of ​​the individual safety and avoidance equipment at the corresponding spatial location, and determine the temperature of the corresponding area outside the individual safety and avoidance equipment determined by the outer area temperature calculation unit.

[0041] Then calculate the ratio R between the local internal space temperature value and / or the overall internal space temperature value and the temperature outside the individual safety and avoidance equipment at the corresponding spatial location.

[0042] Furthermore, the process of performance evaluation based on the ratio R includes:

[0043] The evaluation is based on the ratio R and the smoke concentration data c, and the evaluation index values ​​are as follows:

[0044]

[0045] Where c represents smoke concentration data, λ represents the smoke concentration hazard threshold, and F(R) is a function that determines performance based on the ratio R, and F(R) is a function that is negatively correlated with R.

[0046] This scheme considers the ratio R and smoke concentration data c for evaluation, which can not only evaluate the performance of individual safety and avoidance equipment more comprehensively, but also detect and evaluate factors such as the performance degradation of the individual safety and avoidance equipment cover. Attached Figure Description

[0047] Figure 1This is a structural diagram of the cross-section of the detection platform along the center line in the width direction; in the diagram, 100 is the test platform, 101 is the mounting plate, 102 is the combustion heat source, 200 is the sample mounting platform, 201 is the folding support steel frame, 202 is the detector mounting hole, 300 is the lifting mechanism, 401 is the temperature sensor, and 402 is the smoke sensor.

[0048] Figure 2 This is a schematic diagram of the test sample (fire shield).

[0049] Figure 3 This is a schematic diagram of the temperature field reconstruction process. Detailed Implementation

[0050] The main function of the forest fire individual safety and refuge equipment performance testing platform is to comprehensively test the overall thermal protection performance of forest fire shelters, taking into account factors such as the shelter's space, external reflective materials, composite materials, and splicing performance, to fully evaluate the fire shelter's thermal protection performance. More importantly, in experimental studies involving dummy simulations of being surrounded by flames, it was discovered that in forest fires, individual safety and refuge equipment, especially fire shelters, experiences internal radiant heat, leading to thermal convection. Current testing methods do not consider this issue and are unlikely to take it into account when testing individual safety and refuge equipment. This invention uses the flame heat generated by a flame propagation device, along with radiant heat and thermal convection, to create a test condition where a dummy is surrounded by flames. A heat flux sensor on the dummy simulates human skin's sensory function and collects and processes the data to analyze skin burn conditions. This allows for comprehensive thermal protection performance testing of fire shelters suitable for forest fires, as well as similar individual safety and refuge equipment.

[0051] Specific implementation method one: Combining Figure 1 This implementation method is described below.

[0052] This embodiment is a performance testing platform for individual safety and disaster avoidance equipment used in forest fires, including: a test bench 100, a mounting plate 101, a combustion heat source 102, a sample mounting platform 200, a folding support steel frame 201, a detector mounting hole 202, a lifting mechanism 300, a temperature sensor 401, a smoke sensor 402, etc.

[0053] The test bench 100 is provided with a sample mounting platform 200 in the middle, and the sample mounting platform 200 is driven to rise and fall by the lifting mechanism 300.

[0054] In some embodiments, the two sides of the sample mounting platform 200 along the width and / or length direction are inclined, or the circumferential surface of the sample mounting platform 200 is an flared inclined surface (the sample mounting platform 200 can be a frustum-shaped structure similar to a cone). The surface of the test platform 100 that contacts the sample mounting platform 200 is an inclined surface, and it fits flat with the inclined surface of the sample mounting platform to form a tight closed structure, so as to ensure that when the combustion heat source sprays flame at a specific angle to the sample (especially in the downward direction), the flame or flame radiation heat does not travel along the gap to the bottom of the platform. Preferably, when the test platform 100 and the sample mounting platform 200 form a tight closed structure, the upper surface of the sample mounting platform 200 is higher than the upper surface of the test platform 100.

[0055] It should be noted that, in other embodiments, the lifting mechanism 300 may not be required, and the test sample may be installed manually by stepping over the mounting plate. When a lifting mechanism is installed, the lifting mechanism 300 driving the sample mounting platform 200 can be located below or above the sample mounting platform. Figure 1 The structure shown is merely a preferred example. When the lifting mechanism 300 driving the sample mounting platform 200 is positioned above the sample mounting platform, it can be moved by a steel wire rope or steel rod. The steel wire rope or steel rod is positioned around the perimeter to avoid combustion heat sources or jet flames, thereby reducing interference with the test sample on the sample mounting platform. At this time, the inclined surface of the test platform and the inclined surface of the sample mounting platform can be aligned. Figure 1 The slopes shown are in opposite directions.

[0056] Multiple folding support steel frames 201 are set on the edge of the upper surface of the sample mounting platform 200 to support the installed test sample, so as to ensure that a simulated individual safety avoidance space is formed inside the test sample.

[0057] The sample mounting stage is provided with detector mounting holes 202 for mounting temperature sensor 401 and smoke sensor 402. The detection ends of temperature sensor 401 and smoke sensor 402 protrude from the upper surface of the sample mounting stage 200. Multiple temperature sensors are provided and are symmetrically arranged with respect to the center of the sample mounting stage. The detection ends of the multiple temperature sensors are at different heights relative to the upper surface of the sample mounting stage, but the detection ends of two temperature sensors symmetrically arranged with respect to the center of the sample mounting stage must be at the same height relative to the upper surface of the sample mounting stage. There is one or more smoke sensors. When there are multiple smoke sensors, they are also symmetrically arranged with respect to the center of the sample mounting stage.

[0058] Multiple mounting plates 101 are set on the test bench 100, forming a relatively closed thermal environment space. This does not refer to an absolutely closed environment, but a relatively closed area. The multiple mounting plates 101 are arranged adjacent to each other, and there may be gaps between them. Generally, no cover plate is set above the area enclosed by the multiple mounting plates, but a cover plate can be set as needed. Each mounting plate 101 is provided with multiple mounting holes. The combustion heat source 102 is installed on the mounting holes through an angle adjustment device. In this embodiment, the angle adjustment device is a universal ball joint, and the combustion heat source is a flame spray gun head.

[0059] In actual testing of test samples, the test samples are as follows: Figure 2 As shown, the test sample is placed on the sample mounting platform and supported by a folding support steel frame 201. A high-temperature environment cover can be added to the outside of the test sample as needed. The combustion heat source 102 is deflected at a certain angle in the same direction, for example, in... Figure 1 The test direction is deflected clockwise / counterclockwise. When a high-temperature environment cover is installed, multiple openings are symmetrically arranged on the high-temperature environment cover for the combustion heat source 102 to spray flames into the cover symmetrically at a certain angle. The certain angle of deflection mentioned in this embodiment does not require that the angles be the same. They only need to be consistent in direction and similar in angle. For example, the angle deviation is controlled within 15 degrees. This not only ensures the comprehensive testing of the overall thermal protection performance of individual safety and emergency equipment such as forest fire shelters, that is, the comprehensive testing of factors including the space of the cover, external reflective materials, composite materials of the cover, and the splicing performance of the cover, especially the strength of the splicing parts, and the resulting impact on the internal space; at the same time, this can also form thermal convection on the outside of the test sample in different usage modes, so that the test sample is radiated by the thermal convection on the outside, making the test environment closer to the real situation, and forming thermal convection caused by radiative heat inside the test sample, so that the internal environment of the test sample is closer to the real situation, thereby achieving more accurate performance testing of individual safety and emergency equipment such as fire shelters.

[0060] It should be noted that the test platform 100 and sample mounting platform 200 in this embodiment are compact structures (achieved through two mutually contacting platforms). In actual needs, they can also form a distributed structure, that is, multiple mounting racks / sample mounting platforms for combustion heat sources 102 are distributed around the sample mounting platform 200. The advantage of the distributed structure is that the overall structure of the testing platform is simple and the cost is low, but it has corresponding disadvantages. The compact structure can precisely make up for this disadvantage. That is, when testing the same type of test sample, the compact structure is relatively "concentrated", which reduces the requirements for test space. More importantly, the compact mounting plate can form a relatively enclosed area, which makes it easier to form a relatively thermally closed space, reducing the "outward" diffusion and radiation of heat in the area, saving energy. At the same time, it can also ensure that thermal convection is formed on the outside of the test sample under different usage modes, especially in the mode without a high-temperature environment cover, so that the test environment is closer to the real situation. This makes thermal convection caused by radiant heat form inside the test sample, making the internal environment of the test sample closer to the real situation, thereby achieving more accurate testing of the performance of individual safety and disaster avoidance equipment such as fire shields. Specific Implementation Method Two:

[0062] This embodiment is a performance testing platform for individual safety and refuge equipment used in forest fires. Based on specific embodiment one, the platform further includes a performance testing and evaluation system for individual safety and refuge equipment, which can be implemented through a computer embedded system. The system includes:

[0063] Flame control unit: used to control the amount of fire from the combustion heat source;

[0064] The outer area temperature calculation unit calculates the total heat of the area enclosed by multiple mounting plates based on the fire volume of the combustion heat source, and then calculates and / or simulates the temperature outside the individual safety and avoidance equipment; if the temperature outside the individual safety and avoidance equipment is simulated, the finite element method (FEM) can be used for simulation based on the total heat.

[0065] Temperature data acquisition unit: used to acquire data from all temperature sensors;

[0066] Smoke data acquisition unit: used to acquire smoke concentration data c from the smoke sensor; if only one smoke sensor is set, the smoke concentration data is obtained directly; if multiple smoke sensors are set, the average value is taken.

[0067] Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety and safety equipment based on data from all temperature sensors;

[0068] like Figure 3As shown, the temperature field reconstruction process in this embodiment is as follows:

[0069] S1. Discretize the internal space of individual safety and avoidance equipment. Record the known spatial location of the temperature sensor detection end as the known spatial location, and use the temperature sensor value at the known spatial location as the corresponding spatial location x. i Temperature value

[0070] S2, obtained from S1 Interpolation is used to interpolate the values ​​of all discretized spatial locations to obtain the temperature value for each discretized spatial location.

[0071] S3. Remove the temperature values ​​corresponding to all known spatial locations, and randomly remove some temperature values ​​corresponding to spatial locations obtained through interpolation; denote these locations as the removed locations, and then interpolate them again to obtain the re-interpolated temperature of the removed locations, denoted as .

[0072] S4. Treat the temperature value of each spatial location as a particle and optimize it using the particle swarm optimization algorithm. Repeat step S3 once after each particle optimization. The particle obtained after optimization by the particle swarm optimization algorithm is the optimized temperature value of the corresponding spatial location.

[0073] The objective function used in the optimization process is as follows:

[0074]

[0075] Where, x' i Indicates a known spatial location. x' represents time t i Temperature sensor value at the location, x' represents time t i The temperature value obtained by re-interpolation at the location;

[0076] Performance evaluation unit: The evaluation is based on the ratio of the local internal space temperature value and / or the overall internal space temperature value over a period of time to the temperature on the outside of the individual safety and avoidance equipment at the corresponding spatial location.

[0077] For individual safety and refuge equipment such as fire shields, the shield body is basically made of soft materials spliced ​​together. Problems may arise at the splicing points due to splicing issues, or the splicing may be done by bonding, resulting in a double-layered result at the splicing points, thus causing problems at the non-sponge-jointed areas. Also, due to practical needs, it may be necessary to evaluate the performance of certain specific local areas or the entire area. Therefore, this invention uses the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature on the outside of the individual safety and refuge equipment at the corresponding spatial location as the evaluation index.

[0078] The evaluation process uses the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety and refuge equipment at the corresponding spatial location as the evaluation index. The time period is determined according to the actual test requirements, such as 30 minutes, 60 minutes, etc., or even based on the continuous changes of different time periods.

[0079] The process of determining the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety and evacuation equipment at the corresponding spatial location includes:

[0080] The local or overall internal space to be evaluated is denoted as x = {x”. i}, where x” represents each discretized spatial location contained within the local or global interior space to be evaluated; then x” is calculated. i Location average value, This represents the temperature value obtained by re-interpolation (the last interpolation) at time t, x”.

[0081] Based on the position of x”, determine the outer area of ​​the individual safety and avoidance equipment at the corresponding spatial location, and determine the temperature of the corresponding area (outer side of the individual safety and avoidance equipment) determined by the outer area temperature calculation unit;

[0082] Then calculate the ratio R between the local internal space temperature value and / or the overall internal space temperature value and the temperature outside the individual safety and refuge equipment at the corresponding spatial location;

[0083] In practice, the ratio of the two can be used as the performance evaluation index alone, or other indicators can be added for performance evaluation. Since smoke concentration is also a major factor affecting the safety of the space inside the fire shelter, this embodiment uses the ratio of the two as the performance evaluation index, and the evaluation index values ​​are as follows:

[0084]

[0085] Where c represents smoke concentration data, λ represents the hazardous threshold for smoke concentration, typically set to 100 ppm; F(R) is a function that determines performance based on the ratio R. The specific form of this function can be fitted according to actual needs or provided by experts; this invention does not impose many limitations. However, it should be noted that in this embodiment, F(R) is a function negatively correlated with R, meaning the larger the ratio R, the smaller the performance function value F(R). And in the formula... It is a discount factor, meaning that when the smoke concentration exceeds the danger threshold, within the same time range, the higher the smoke concentration, the worse the performance of the individual safety and refuge equipment. If evaluated according to the evolution over time, the performance of the individual safety and refuge equipment's enclosure (including the performance of the submaterial itself, the cracking performance at the joints, coating failure, etc.) may accelerate with the increase of the fire time, all of which will cause changes in smoke concentration, especially accelerated changes, which will pose a danger to the internal space of the individual safety and refuge equipment. Therefore, this invention also fully considers these changes in order to achieve a comprehensive test of the overall performance of the individual safety and refuge equipment.

[0086] The above examples of the present invention are merely illustrative of the computational model and process of the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is impossible to exhaustively list all possible implementations here. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A performance testing platform for individual safety and evacuation equipment used in forest fires, characterized in that, include: Test stand (100), mounting plate (101), combustion heat source (102), sample mounting platform (200), folding support steel frame (201), detector mounting hole (202), temperature sensor (401), smoke sensor (402); A sample mounting platform (200) is provided in the middle of the test bench (100). Multiple folding support steel frames (201) are provided on the upper surface of the sample mounting platform (200) to support the installed test samples; The sample mounting stage is provided with detector mounting holes (202) for mounting temperature sensor (401) and smoke sensor (402). The detection ends of temperature sensor (401) and smoke sensor (402) protrude from the upper surface of the sample mounting stage (200). Multiple temperature sensors are provided and are symmetrically arranged with respect to the center of the sample mounting stage. The detection ends of the multiple temperature sensors are at different heights relative to the upper surface of the sample mounting stage, but the detection ends of two temperature sensors symmetrically arranged with respect to the center of the sample mounting stage must be at the same height relative to the upper surface of the sample mounting stage. There is one or more smoke sensors. Multiple mounting plates (101) are set on the test bench (100). The multiple mounting plates (101) form a relatively closed thermal environment space. Each mounting plate (101) is provided with multiple mounting holes. The combustion heat source (102) is installed on the mounting hole through an angle adjustment device. The platform also includes a performance testing and evaluation system for individual safety and emergency avoidance equipment, the system comprising: Flame control unit: used to control the amount of fire from the combustion heat source; Outer area temperature calculation unit: Calculates the total heat of the area enclosed by multiple mounting plates based on the fire volume of the combustion heat source, and then calculates and / or simulates the temperature outside the individual safety and avoidance equipment; Temperature data acquisition unit: used to acquire data from all temperature sensors; Smoke data acquisition unit: used to acquire smoke concentration data c from the smoke sensor; if only one smoke sensor is set, the smoke concentration data is obtained directly; if multiple smoke sensors are set, the average value is taken. Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety and avoidance equipment based on the data from all temperature sensors, and obtain the temperature value of each space location inside the individual safety and avoidance equipment; Performance evaluation unit: First, determine the ratio R between the local internal space temperature value and / or the overall internal space temperature value and the temperature outside the individual safety and avoidance equipment at the corresponding spatial location, and then conduct performance evaluation based on the ratio R.

2. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 1, characterized in that, The platform also includes a lifting mechanism (300), and the sample mounting platform (200) is driven by the lifting mechanism (300) to lift.

3. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 1, characterized in that, The sample mounting platform (200) has two inclined surfaces along its width and / or length, or the circumferential surface of the sample mounting platform (200) is an flared inclined surface. The surface of the test platform (100) that contacts the sample mounting platform (200) is an inclined surface, and it fits flat with the inclined surface of the sample mounting platform to form a tight closed structure.

4. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 3, characterized in that, When the test stage (100) and the sample mounting stage (200) form a tight closed structure, the upper surface of the sample mounting stage (200) is higher than the upper surface of the test stage (100).

5. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 1, characterized in that, The angle adjustment device is a universal ball joint.

6. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 1, characterized in that, When the platform is in use, the combustion heat source (102) deflects at a certain angle in the same direction.

7. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 1, characterized in that, The temperature field reconstruction process includes: S1. Discretize the internal space of individual safety and avoidance equipment. Record the known spatial location of the temperature sensor detection end as the known spatial location, and use the temperature sensor value at the known spatial location as the corresponding spatial location. Temperature value ; S2, obtained from S1 Interpolation is used to interpolate the discretized spatial locations to obtain the temperature value for each discretized spatial location. ; S3. Remove the temperature values ​​corresponding to all known spatial locations, and randomly remove some temperature values ​​corresponding to spatial locations obtained through interpolation; denote these locations as the removed locations, and then interpolate them again to obtain the re-interpolated temperature of the removed locations, denoted as . ; S4. Treat the temperature value of each spatial location as a particle and optimize it using the particle swarm optimization algorithm. Repeat step S3 once after each particle optimization. The particle obtained after optimization by the particle swarm optimization algorithm is the optimized temperature value of the corresponding spatial location. The objective function used in the optimization process is as follows: in, Indicates a known spatial location. Represents time t Temperature sensor value at the location, Represents time t The temperature value obtained by re-interpolation at the location.

8. The performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 7, characterized in that, The process of determining the ratio R of the local internal space temperature value and / or the overall internal space temperature value over a period of time to the temperature outside the individual safety and shelter equipment at the corresponding spatial location includes: Let x = { }, This represents each discretized spatial location contained within the local or global interior space to be evaluated; then, the calculation is performed. Location average value, Represents time t The temperature value obtained by re-interpolation at the location; according to The location is determined by the outer area of ​​the individual safety and avoidance equipment at the corresponding spatial location, and the temperature of the corresponding area outside the individual safety and avoidance equipment is determined by the outer area temperature calculation unit. Then calculate the ratio R between the local internal space temperature value and / or the overall internal space temperature value and the temperature outside the individual safety and avoidance equipment at the corresponding spatial location.

9. A performance testing platform for individual safety and evacuation equipment used in forest fires according to claim 8, characterized in that, The process of performance evaluation based on the ratio R includes: The evaluation is based on the ratio R and the smoke concentration data c, and the evaluation index values ​​are as follows: in, For smoke concentration data, The hazardous threshold for smoke concentration; The function that determines performance based on the ratio R. Is with Functions that are negatively correlated.

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