Performance detection platform of individual safety risk avoiding equipment for forest fire

Abstract

The invention discloses an individual safety risk avoiding equipment performance detection platform for forest fire, and belongs to the technical field of fireproof equipment testing. The invention aims to solve the problem that a detection platform for integrally detecting the safety protection performance of individuals such as a fire-proof cover does not exist at present. The device comprises platform hardware and a detection and evaluation system, in the hardware, a sample mounting table is arranged in the middle of a test board; a plurality of folding supporting steel frames are arranged on the upper table surface of the sample mounting table; a detector mounting hole is formed in the sample mounting table and is used for mounting a temperature sensor and a smoke sensor; the temperature sensors are arranged in central symmetry; a plurality of mounting plates are arranged on the test board and form a relatively closed thermal environment space, each mounting plate is provided with a plurality of mounting holes, and the combustion heat sources are mounted on the mounting holes through angle adjusting devices; and the detection evaluation system performs performance evaluation by using the ratio of the internal space temperature value to the temperature of the outer side of the individual safety risk avoiding equipment at the corresponding space position.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire protection equipment testing, and particularly relates to a performance detection platform for individual safety refuge equipment. Background Art

[0002] Fire accidents seriously affect people's property safety and cause huge property losses every year. Among them, the losses caused by forest fires are extremely serious, especially the losses to the ecosystem. Compared with other fires, forest fires have the characteristics of large burned area, strong destruction, and difficulty in control, which pose a great threat to individual safety.

[0003] At present, the forest fire prevention fire shield is the only emergency self-rescue equipment worn by forest firefighters, and it plays a crucial role in individual safety in forest fires. However, at present, the forms of individual safety refuge equipment are diverse and their performances vary greatly. In the complex forest fire environment, the heat sources that cause harm to the human body are different, and the heat transfer methods are also different. Therefore, the fire shield needs to have various thermal protection performances such as flame retardancy, heat insulation, heat radiation resistance, and integrity. In the standard test of LY / T 2583-2016 "Forest Fire Prevention Fire Shield", there is no way and detection platform to evaluate and measure the overall safety protection performance of the fire shield. How to accurately and comprehensively test and evaluate the thermal protection performance of the fire shield is an important basis for promoting the research and application of emergency self-rescue equipment. At present, the detection of fire protection equipment generally focuses on the flame retardancy and heat insulation ability of fireproof materials, but this is far from enough for the evaluation of the overall safety protection performance of the fire shield, especially the overall safety protection performance of the fire shield under the characteristics of forest fires cannot be well reflected.

[0004] Although it is possible to create test conditions where a dummy is surrounded by flames by using the flame generated by a flame spread device, and simulate the human skin sensing function through the heat flux sensor on the dummy body and collect and process data to analyze the skin burn situation. However, at present, it only stays at the level of theoretical research. There are few scientific research institutions or organizations that truly engage in experimental testing and practical application of refuge equipment, and the corresponding theoretical and practical data are scarce. How to ensure the accuracy and comprehensiveness of the test environment and data monitoring, and make the skin burn simulation and analysis closer to the real situation is still a major difficulty faced by the test of the overall safety protection performance of the fire shield. Summary of the Invention

[0005] The present invention aims to solve the problem that there is currently no detection platform for comprehensively detecting the overall safety protection performance of individual safety protection equipment such as fire shields.

[0006] An individual safety hazard avoidance equipment performance detection platform for forest fires, comprising: a test bench (100), a mounting plate (101), a combustion heat source (102), a specimen mounting table (200), a folding support steel frame (201), a detector mounting hole (202), a temperature sensor (401), and a smoke sensor (402);

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

[0008] A plurality of folding support steel frames (201) are provided on the upper surface of the specimen mounting table (200) for supporting the test samples to be installed;

[0009] Detector mounting holes (202) are provided on the specimen mounting table. The detector mounting holes (202) are used to mount the temperature sensor (401) and the smoke sensor (402). The detection ends of the temperature sensor (401) and the smoke sensor (402) protrude from the upper surface of the specimen mounting table (200); The temperature sensors are provided in multiple numbers and are symmetrically arranged with respect to the center of the specimen mounting table. The heights of the detection ends of the multiple temperature sensors with respect to the upper surface of the specimen mounting table are different, but the heights of the detection ends of two temperature sensors symmetrically arranged with respect to the center of the specimen mounting table with respect to the upper surface of the specimen mounting table need to be the same; The smoke sensors are provided in one or more numbers;

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

[0011] The present invention provides a detection platform for comprehensively detecting the overall individual safety protection performance such as a fire shield, and can realize the overall detection of the individual safety protection performance.

[0012] Further, the platform further includes a lifting mechanism (300), and the specimen mounting table (200) is driven by the lifting mechanism (300) to realize lifting.

[0013] The detection platform of this solution has the advantage of convenient operation.

[0014] Further, according to an individual safety hazard avoidance equipment performance detection platform for forest fires described in claim 1, it is characterized in that both side surfaces of the specimen mounting table (200) in the width and / or length directions are inclined surfaces, or the peripheral surface of the specimen mounting table (200) is a flared inclined surface, and the surface of the test bench (100) in contact with the specimen mounting table (200) is an inclined surface, and it is in flat fit with the inclined surface of the specimen mounting table to form a tight closed structure.

[0015] This solution can ensure that when the combustion heat source sprays flames on the specimen at a specific angle, the flames or the radiant heat of the flames will not affect the area below the platform, and it also ensures the utilization rate of energy.

[0016] Further, for an individual safety refuge equipment performance detection platform for forest fires according to claim 3, it is characterized in that, in a state where the test bench (100) and the specimen mounting table (200) form a tight closed structure, the upper surface of the specimen mounting table (200) is higher than the upper surface of the test bench (100).

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

[0018] This solution with a universal ball joint is convenient to operate and has a low cost.

[0019] Further, in the state of platform use, the combustion heat source (102) deflects a certain angle in the same direction.

[0020] This solution can more easily cause the specimen to be affected by the radiation of the external heat convection, making the test environment closer to the real situation, forming heat convection caused by radiant heat inside the specimen, so that the internal environment of the specimen is closer to the real situation, and thus achieving a more accurate test of the performance of individual safety refuge equipment such as fire shelters.

[0021] Further, the individual safety refuge equipment performance detection platform for forest fires further includes a set of individual safety refuge equipment performance detection and evaluation system, and the system includes:

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

[0023] Outer area temperature calculation unit: calculates the total heat of the area surrounded by multiple mounting plates according to the fire amount of the combustion heat source, and further calculates and / or simulates the temperature outside the individual safety refuge equipment;

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

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

[0026] Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety refuge equipment according to the data of all temperature sensors, and obtain the temperature value of each spatial position inside the individual safety refuge equipment;

[0027] Performance evaluation unit: First, determine the ratio R of the temperature value of the local internal space and / or the overall internal space within a certain period of time to the temperature outside the individual safety refuge equipment at the corresponding space position, and perform performance evaluation based on the ratio R.

[0028] This solution provides a detection platform for comprehensively detecting the individual safety protection performance of fire shields and the like. While being able to achieve the overall detection of individual safety protection performance, it also provides a method for detecting and evaluating the performance of individual safety refuge equipment, which can effectively evaluate based on the physical factors of the entire individual safety refuge equipment. It not only has objectivity but also has a relatively consistent measurement standard, avoiding detection and evaluation deviations caused by subjective factors, and making the detection and evaluation of individual safety refuge equipment more accurate.

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

[0030] S1. Discretize the internal space of the individual safety refuge equipment. Denote the space position where the detection end of the pre-known temperature sensor is located as the known space position, and use the temperature sensor value at the known space position as the temperature value at the corresponding space position x i of

[0031] S2. According to what is obtained in S1 Interpolate all discretized space positions using the interpolation method to obtain the temperature value at each discretized space position

[0032] S3. Remove the temperature values corresponding to all known space positions, and randomly remove the temperature values corresponding to some of the space positions obtained by interpolation; Denote these positions as the removed positions, and use the interpolation method to interpolate the removed positions again to obtain the re-interpolated temperature of the removed positions, denoted as

[0033] S4. Take the temperature value at each space position as a particle, and use the particle swarm optimization algorithm for optimization. Each time a particle optimization is performed, repeat step S3. After being optimized by the particle swarm optimization algorithm, the obtained particles at the corresponding positions are the temperature values at the optimized corresponding space positions;

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

[0035]

[0036] where, x' i represents the known space position, represents the temperature sensor value at x' i at time t, represents the temperature sensor value at x' iThe temperature value obtained by re - interpolation at the [specific location].

[0037] Since in actual situations, the internal and external temperatures of an individual safety and refuge equipment are unevenly distributed within a certain time range, and this non - uniformity can cause local areas to seriously affect the performance evaluation of the individual safety and refuge equipment. This solution notices this problem and provides a more accurate method for temperature reconstruction of the internal space of the individual safety and refuge equipment, ensuring the accuracy of determining the temperature of the internal space of the individual safety and refuge equipment.

[0038] Further, the process of determining the ratio R of the temperature value of the local internal space and / or the overall internal space to the temperature outside the individual safety and refuge equipment at the corresponding space position within a certain period of time includes:

[0039] Denote the local internal space or the overall internal space to be evaluated as x = {x” i}, where x” represents each discretized space position included in the local internal space or the overall internal space to be evaluated; then calculate the i average value at the position of x” , representing the temperature value obtained by re - interpolation at x” at time t;

[0040] Determine the outer region of the individual safety and refuge equipment at the corresponding space position according to the position of x”, and determine the temperature of the corresponding region outside the individual safety and refuge equipment determined by the outer - region temperature calculation unit;

[0041] Then calculate the ratio R of the temperature value of the local internal space and / or the overall internal space to the temperature outside the individual safety and refuge equipment at the corresponding space position.

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

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

[0044]

[0045] Among them, c is the smoke concentration data, λ is the smoke concentration danger threshold; F(R) is a function for determining performance according to the ratio R, and F(R) is a function negatively correlated with R.

[0046] This solution considers the ratio R and the smoke concentration data c for evaluation, which can not only evaluate the performance of the individual safety and refuge equipment more comprehensively, but also detect and evaluate factors such as the performance degradation of the housing of the individual safety and refuge equipment. Brief Description of the Drawings

[0047] Figure 1Structural diagram of the cross-section of the center line in the width direction of the detection platform; in the figure, 100 - test bench, 101 - mounting plate, 102 - combustion heat source, 200 - specimen mounting table, 201 - folding support steel frame, 202 - detector mounting hole, 300 - lifting mechanism, 401 - temperature sensor, 402 - smoke sensor.

[0048] Figure 2 Schematic diagram of the test sample (fire shield).

[0049] Figure 3 Schematic diagram of the temperature field reconstruction process. Specific implementation mode

[0050] The main function of the performance detection platform for individual safety emergency equipment in forest fires is to comprehensively test the overall thermal protection performance of forest fire shields, such as factors like the space of the shield body, external reflective materials, composite materials of the shield body, and splicing performance of the shield body, and to completely evaluate the thermal protection performance of the fire shield. More importantly, in the experimental study on manufacturing a dummy surrounded by flames, it was found that in forest fires, for individual safety emergency equipment, especially the protective shield, there will be radiant heat inside and a kind of heat convection caused by radiant heat. None of the current detection methods have noticed this problem, and it is even more impossible to consider this problem when detecting individual safety emergency equipment. The present invention creates the experimental conditions of a dummy surrounded by flames through the flame heat generated by the flame spreading device, as well as the radiant heat and heat convection environment, and simulates the human skin sensing function through the heat flux sensor on the dummy body and conducts data acquisition and processing to analyze the skin burn situation, thereby realizing the overall thermal protection performance test of the fire shield applicable to forest fires and the overall thermal protection performance test of individual safety emergency equipment similar to the fire shield.

[0051] Specific implementation mode one: Combined with Figure 1 Describe this implementation mode,

[0052] This implementation mode is a performance detection platform for individual safety emergency equipment in forest fires, including: test bench 100, mounting plate 101, combustion heat source 102, specimen mounting table 200, folding support steel frame 201, detector mounting hole 202, lifting mechanism 300, temperature sensor 401, smoke sensor 402, etc.

[0053] A specimen mounting table 200 is arranged in the middle of the test bench 100, and the specimen mounting table 200 is driven by a lifting mechanism 300 to achieve lifting;

[0054] In some embodiments, both side surfaces of the specimen mounting table 200 in the width and / or length directions are inclined surfaces, or the peripheral surface of the specimen mounting table 200 is a flared inclined surface (the specimen mounting table 200 can be a frustum-shaped structure similar to a cone). The surface of the test table 100 in contact with the specimen mounting table 200 is an inclined surface, and it is in flat fit with the inclined surface of the specimen mounting table to form a tight closed structure, so as to ensure that when the combustion heat source sprays a flame at a specific angle onto the specimen (especially in the downward direction), the flame or the radiant heat of the flame does not go along the gap under the platform; preferably, in the state where the test table 100 and the specimen mounting table 200 form a tight closed structure, the upper surface of the specimen mounting table 200 is higher than the upper surface of the test table 100.

[0055] It should be noted that: actually, in other embodiments, the lifting mechanism 300 may not be provided, and the test sample can be directly installed by manually stepping over the mounting plate. When the lifting mechanism is installed, the lifting mechanism 300 for driving the specimen mounting table 200 can be arranged below the specimen mounting table or also above it. Figure 1 The structure shown is only a preferred example. When the lifting mechanism 300 for driving the specimen mounting table 200 is arranged above the specimen mounting table, it can be driven by a steel wire rope or a steel rod. The steel wire rope or the steel rod is arranged around to avoid the combustion heat source or the sprayed flame to reduce the interference to the test sample on the specimen mounting table; at this time, the inclined surface of the test table and the inclined surface of the specimen mounting table can be Figure 1 in the opposite inclined surface directions as shown.

[0056] A plurality of folding support steel frames 201 are arranged on the edge of the upper surface of the specimen mounting table 200 to support the installed test sample to ensure that a simulated individual safety refuge space is formed inside the test sample.

[0057] Detector mounting holes 202 are provided on the specimen mounting table. The detector mounting holes 202 are used to mount the temperature sensor 401 and the smoke sensor 402. The detection ends of the temperature sensor 401 and the smoke sensor 402 protrude from the upper surface of the specimen mounting table 200; a plurality of temperature sensors are provided and are symmetrically arranged with respect to the center of the specimen mounting table. The detection ends of the plurality of temperature sensors have different heights relative to the upper surface of the specimen mounting table, but the detection ends of two temperature sensors symmetrically arranged with respect to the center of the specimen mounting table need to have the same height relative to the upper surface of the specimen mounting table; the smoke sensor is provided with one or more. When a plurality of smoke sensors are provided, they are also symmetrically arranged with respect to the center of the specimen mounting table.

[0058] Multiple mounting plates 101 are provided on the test bench 100. The multiple mounting plates 101 form 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 provided above the enclosed area of the multiple mounting plates. Of course, a cover plate can also be provided according to needs; each mounting plate 101 is provided with multiple mounting holes, and the combustion heat source 102 is installed in 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 the spray gun head of the flame vine.

[0059] When actually detecting the test sample, the test sample is as Figure 2 shown. The test sample is arranged on the specimen mounting table and supported by the folding support steel frame 201. According to actual needs, a high-temperature environment cover can be added on the outside of the test sample. The combustion heat source 102 deflects a certain angle in the same direction. For example, it deflects clockwise / counterclockwise in the Figure 1 retest direction. When a high-temperature environment cover is added, a plurality of openings are symmetrically arranged on the high-temperature environment cover for the combustion heat source 102 to spray flames into the cover at a certain angle symmetrically. The "deflecting a certain angle" in this embodiment does not require the angles to be exactly the same. As long as their directions are the same and the angles are not much different, for example, the angle deviation is controlled within 15 degrees. This can not only ensure the comprehensive test of the overall thermal protection performance of individual safety and risk avoidance equipment such as forest fire shelters, that is, the comprehensive test of factors such as the space of the cover body, the external reflective material, the composite material of the cover body, and the splicing performance of the cover body, especially the strength of the splicing part, and the resulting influence 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 affected by the radiation of the external thermal convection, so that the test environment is closer to the real situation, and thermal convection caused by radiative heat is formed inside the test sample, so that the internal environment of the test sample is closer to the real situation, so as to achieve a more accurate test of the performance of individual safety and risk avoidance equipment such as fire shelters.

[0060] It should be noted that: The test bench 100 and the specimen mounting table 200 in this embodiment belong to a compact structure (realized by two mutually contacting tables). In actual needs, a distributed structure can also be formed, that is, mounting frames / specimen mounting tables of multiple combustion heat sources 102 are distributed around the specimen mounting table 200; The advantage of the distributed structure is that the overall structure of the detection platform is simple and the cost is low, but there are corresponding disadvantages, while the compact structure can just make up for this shortcoming, that is: when testing the same model of test samples, the compact structure is relatively "concentrated", reducing the requirements for the test space. More importantly, the compact mounting plate can form a relatively enclosed area, making it easier to form a relatively thermally closed space, reducing the "outward" diffusion and radiation of heat in the area, saving energy, and at the same time ensuring that thermal convection is formed outside the test sample under different usage modes of the test sample. Especially in the mode without setting a high-temperature environment cover, the test environment is made closer to the real situation, and then thermal convection caused by radiant heat is formed inside the test sample, making the internal environment of the test sample closer to the real situation, so as to achieve more accurate performance detection of individual safety refuge equipment such as fire shelters. Specific Embodiment 2:

[0062] This embodiment is a performance detection platform for individual safety refuge equipment for forest fires. On the basis of Specific Embodiment 1, the platform further includes a set of individual safety refuge equipment performance detection and evaluation system, and the system can be realized through a computer embedded system. The system includes:

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

[0064] Outer region temperature calculation unit: calculate the total heat of the area surrounded by multiple mounting plates according to the fire amount of the combustion heat source, and then calculate and / or simulate the temperature outside the individual safety refuge equipment; If the temperature outside the individual safety refuge equipment is simulated, based on the total heat, it can be simulated by using the finite element method (FEM).

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

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

[0067] Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety refuge equipment according to the data of all temperature sensors;

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

[0069] S1. Discretize the internal space of the individual safety refuge equipment. Denote the spatial positions where the detection ends of the pre-known temperature sensors are located as known spatial positions, and use the temperature sensor values at the known spatial positions as the temperature values of the corresponding spatial positions x i at

[0070] S2. According to what is obtained in S1 Interpolate all the discretized spatial positions using the interpolation method to obtain the temperature values of each discretized spatial position

[0071] S3. Remove the temperature values corresponding to all the known spatial positions, and at the same time randomly remove the temperature values corresponding to some of the spatial positions obtained by interpolation; Denote these positions as the removed positions, and use the interpolation method to interpolate the removed positions again to obtain the re-interpolated temperature of the removed positions, denoted as

[0072] S4. Take the temperature value of each spatial position as a particle, and use the particle swarm optimization algorithm for optimization. Each time a particle optimization is performed, repeat step S3. After being optimized by the particle swarm optimization algorithm, the obtained particles corresponding to the positions are the temperature values of the corresponding spatial positions after optimization;

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

[0074]

[0075] where x' i represents the known spatial position, represents the temperature sensor value at x' i at time t, represents the temperature value obtained by re-interpolation at x' i at time t;

[0076] Performance evaluation unit: Evaluate using the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety refuge equipment at the corresponding spatial position within a period of time as the evaluation index;

[0077] For individual safety refuge equipment such as a fire shield, its cover part is basically made of soft materials through splicing. Problems may occur at the splicing joints due to splicing issues, or the splicing joints may be double-layered due to the bonding method of splicing, resulting in problems occurring at non-splicing joints. Or, due to actual needs, it may be necessary to evaluate the performance of certain special local areas or the overall area. Therefore, in the present invention, the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety refuge equipment at the corresponding space position is used as an evaluation index for evaluation.

[0078] During the evaluation process using the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety refuge equipment at the corresponding space position as an evaluation index over a period of time, the period of time is determined according to actual test requirements, such as 30 minutes, 60 minutes of fire exposure, etc., and even evaluation can be carried out according to the continuous change situation at different times.

[0079] The determination process of the ratio of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety refuge equipment at the corresponding space position includes:

[0080] Denote the local internal space or the overall internal space to be evaluated as x = {x” i}, where x” represents each discretized space position included inside the local internal space or the overall internal space to be evaluated; then calculate the i average value of the position of x”, where represents the temperature value obtained by reinterpolation (the last interpolation) at x” at time t.

[0081] Determine the outer area of the individual safety refuge equipment at the corresponding space position according to the position of x”, and determine the temperature of the corresponding area (the outside of the individual safety refuge equipment) determined by the outer area temperature calculation unit;

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

[0083] In fact, only the ratio of the two can be used as the performance evaluation index, or other indexes can be added for performance evaluation. Since the smoke concentration is also a main factor affecting the safety of the space inside the fire shield, therefore, when using the ratio of the two as the performance evaluation index in this embodiment, it can be evaluated in combination with the smoke concentration data c, and the evaluation index value is as follows:

[0084]

[0085] Among them, c is the smoke concentration data, λ is the smoke concentration danger threshold, which is generally set to 100 ppm; F(R) is a function for determining the performance according to the ratio R. The specific form of this function can be fitted according to actual needs or given by experts. The present invention does not make excessive limitations. However, it should be noted that in this embodiment, F(R) is a function negatively correlated with R, that is, the larger the ratio R, the smaller the performance function value F(R). And in the formula, is the discount factor. That is, when the smoke concentration exceeds the danger threshold, within the same time range, if the smoke concentration is higher, it means that the performance of the individual safety and hazard avoidance equipment is worse; if evaluated according to the time evolution, then as the fire time increases, it may lead to the accelerated failure of the cover performance of the individual safety and hazard avoidance equipment (including the performance of the secondary material itself, the cracking performance at the joints, the coating failure, etc.), all of which will cause changes in the smoke concentration, especially accelerated changes, posing a danger to the internal space of the individual safety and hazard avoidance equipment. Therefore, the present invention also fully considers these changes to achieve a comprehensive detection of the overall performance of the individual safety and hazard avoidance equipment.

[0086] The above examples of the present invention are only to illustrate in detail the calculation model and calculation process of the present invention, rather than a limitation on the implementation mode of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation modes here. Any obvious changes or modifications derived from the technical solution of the present invention still fall within the protection scope of the present invention.

Claims

1. A performance testing platform for individual safety and risk avoidance equipment for forest fires, characterized in that: include: A test bench (100), a mounting plate (101), a combustion heat source (102), a sample mounting table (200), a folding support steel frame (201), a detector mounting hole (202), a temperature sensor (401), and a smoke sensor (402); A sample mounting platform (200) is arranged in the middle of the test platform (100); A plurality of folding support steel frames (201) are arranged on the upper surface of the sample installation table (200) for supporting the installed test samples; The sample mounting table is provided with a detector mounting hole (202), and the detector mounting hole (202) is used to mount a temperature sensor (401) and a smoke sensor (402), and the detection ends of the temperature sensor (401) and the smoke sensor (402) protrude from the upper surface of the sample mounting table (200); a plurality of temperature sensors are provided, and they are symmetrically arranged about the center of the sample mounting table, and the heights of the detection ends of the plurality of temperature sensors relative to the upper surface of the sample mounting table are different, but the heights of the detection ends of the two temperature sensors symmetrically arranged about the center of the sample mounting table relative to the upper surface of the sample mounting table need to be the same; the number of smoke sensors is provided as one or more; A plurality of mounting plates (101) are arranged on the test bench (100), the plurality of mounting plates (101) form a relatively closed thermal environment space, each mounting plate (101) is provided with a plurality of mounting holes, and the combustion heat source (102) is mounted on the mounting hole via an angle adjustment device.

2. The performance testing platform for individual safety and risk avoidance equipment for 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 achieve lifting.

3. The performance testing platform for individual safety and risk avoidance equipment for forest fires according to claim 1, characterized in that: The two side surfaces of the sample mounting platform (200) along the width and / or length direction are inclined surfaces, or the peripheral surface of the sample mounting platform (200) is an expanded inclined surface, and the surface of the test platform (100) in contact with the sample mounting platform (200) is an inclined surface, and is matched with the inclined surface of the sample mounting platform to form a tight closed structure.

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

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

7. A performance testing platform for individual safety and risk avoidance equipment for forest fires according to any one of claims 1 to 6, characterized in that: The platform also includes a set of individual safety and risk avoidance equipment performance detection and evaluation system, the system includes: Flame control unit: used to control the amount of fire of the combustion heat source; External area temperature calculation unit: calculates the total heat of the area enclosed by multiple mounting plates according to the amount of fire from the burning heat source, and then calculates and / or simulates the temperature of the external side of the individual safety and hazard avoidance equipment; Temperature data acquisition unit: used to obtain data from all temperature sensors; Smoke data acquisition unit: used to obtain smoke concentration data c from the smoke sensor; if one smoke sensor is set, the smoke concentration data can be directly obtained; if multiple smoke sensors are set, the average value can be taken; Internal temperature field reconstruction unit: used to reconstruct the temperature of the internal space of the individual safety and risk avoidance equipment according to the data of all temperature sensors, and obtain the temperature value of each space position inside the individual safety and risk avoidance equipment; Performance evaluation unit: first determine the ratio R of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety and risk avoidance equipment at the corresponding spatial position within a period of time, and perform performance evaluation based on the ratio R.

8. The performance testing platform for individual safety and risk avoidance equipment for forest fires according to claim 7, characterized in that: The temperature field reconstruction process includes: S1. Discretize the internal space of the individual safety and risk avoidance equipment, record the spatial position of the temperature sensor detection end known in advance as the known spatial position, and take the temperature sensor value of the known spatial position as the corresponding spatial position x i Temperature value S2, obtained according to S1 The interpolation method is used to interpolate all discretized spatial positions to obtain the temperature value of each discretized spatial position. S3, remove the temperature values ​​corresponding to all known spatial positions, and randomly remove the temperature values ​​corresponding to some spatial positions obtained by difference; record these positions as removed positions, and use the interpolation method to interpolate the removed positions again to obtain the re-interpolated temperature of the removed positions, which is recorded as S4, taking the temperature value of each spatial position as a particle, and optimizing it using the particle swarm optimization algorithm. Each time the particle optimization is performed, step S3 is repeated. After the particle swarm optimization algorithm is used to optimize, the particle at the corresponding position is obtained, which is the optimized temperature value of the corresponding spatial position. The objective function used in the optimization process is as follows: Among them, x' i represents a known spatial position, represents time t x' i The temperature sensor value at represents time t x' i The reinterpolated temperature value at .

9. The performance testing platform for individual safety and risk avoidance equipment for forest fires according to claim 8, 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 to the temperature outside the individual safety and hazard avoidance equipment at the corresponding spatial position within a period of time includes: The local internal space or the whole internal space to be evaluated is denoted as x = {x" i }, x" represents each discretized spatial position contained in the local internal space or the overall internal space to be evaluated; then calculate x" i Positional average value, represents the temperature value obtained by reinterpolation at time x”; Determine the outer area of ​​the individual safety and risk avoidance equipment at the corresponding spatial position according to the position of x", and determine the temperature of the outer area corresponding to the outer area of ​​the individual safety and risk avoidance equipment determined by the outer area temperature calculation unit; Then, a ratio R of the local internal space temperature value and / or the overall internal space temperature value to the temperature outside the individual safety and risk avoidance equipment at the corresponding spatial position is calculated.

10. The performance testing platform for individual safety and risk avoidance equipment for forest fires according to claim 9, characterized in that: The process of performance evaluation based on the ratio R includes: Based on the ratio R and smoke concentration data c, the evaluation index values ​​are as follows: Where c is the smoke concentration data, λ is the smoke concentration danger threshold; F(R) is a function that determines the performance based on the ratio R, and F(R) is a function that is negatively correlated with R.

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