Rescue detection equipment performance test system

Abstract

The utility model provides a rescue detection equipment performance test system which comprises a building simulation structure composed of an outer wall body simulant A and an inner covering simulant B. The outer wall body simulant A is in an upright quadrangular frustum pyramid shape, an inverted quadrangular frustum pyramid space is dug downwards from the upper surface of the outer wall body simulant A, and the inner covering simulant B is arranged in the inverted quadrangular frustum pyramid space. The four peripheral side surfaces of the outer wall body simulant A are inclined surfaces, and the four side surfaces of the quadrangular frustum pyramid space are also inclined surfaces; the inner covering simulant B is formed by stacking a plurality of sub-components with sheet-shaped or block-shaped structures, and the inner covering simulant B can be filled into the quadrangular frustum pyramid space; the building simulation structure can build a simulant collapse scene in a standardized manner, simulates the influence degree of a collapse environment on electromagnetic wave signal attenuation, and is used for standardized performance testing of electromagnetic wave detection equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the performance evaluation technical field of detection equipment such as life detector, small radar etc. with electromagnetic wave as the main function, specifically relates to a kind of rescue detection equipment performance test system. BACKGROUND

[0002] The test scene of life detector and radar detection equipment currently used for disaster rescue is completed based on existing conventional building or artificial collapsed ruins of rescue training base. Artificial building collapsed ruins currently have no unified design construction standard, so when testing electromagnetic wave type detection equipment, the test data is very different based on the ruin scene of different materials and structures, and there is no relatively unified standard ruin scene to measure the working capacity of the equipment. The performance indicators of detection radar include: detection distance, reflectivity, transmission power, wavelength, angular resolution and sampling frequency. Most of these indicators are related to the reflection section of the test scene, and electromagnetic waves are reflected multiple times, even diffusely reflected and penetrated through the wall in the test space, accelerating the attenuation of detection signal strength. The test results of the same radar detection equipment in different building or artificial building ruin scenes are very different, and it is difficult to measure the actual application capacity of the equipment. SUMMARY

[0003] In combination with the current status of test work in the industry, the utility model designs a rescue detection equipment performance test system according to the collapse characteristics of building, and expects to standardize the construction of simulated building collapse scene, simulate the influence degree of collapsed environment on electromagnetic wave signal attenuation, and be used for the standardized performance test of electromagnetic wave type detection equipment.

[0004] The technical scheme adopted by the utility model is as follows: a rescue detection equipment performance test system, characterized by comprising building simulation structure; the building simulation structure comprises two parts of outer wall simulation object A and inner covering simulation object B, the outer wall simulation object A is a right-angled quadrangular prism shape, a right-angled quadrangular prism space is excavated downward from the upper surface thereof, so that the four outer peripheral sides of the outer wall simulation object A are inclined surfaces, and the four side surfaces of the right-angled quadrangular prism space are also inclined surfaces; the inner covering simulation object B is composed of a plurality of sheet or block structure sub-components stacked, and the inner covering simulation object B can be filled and placed into the right-angled quadrangular prism space; an upper opening of the right-angled quadrangular prism space and four corners of the bottom surface are each provided with a measuring point; between the upper opening and the bottom surface of the right-angled quadrangular prism space, two measuring surfaces are selected according to the contour shape of the inner covering simulation object B, and each of the two measuring surfaces and the four side parts of the right-angled quadrangular prism space is provided with a measuring point, a total of twelve measuring points are provided, and three measuring surfaces are provided on the bottom surface of the right-angled quadrangular prism space and the two measuring surfaces.

[0005] The outer wall body simulation object A is composed of a metal frame and a cement reinforced prefabricated plate attached to the metal frame; the sub-component of the inner covering simulation object B is a cement reinforced prefabricated piece.

[0006] When two measurement planes are selected, the surfaces of the slices are selected as much as possible, and one measurement point is arranged at the geometric center of the bottom surface of the quadrangular pyramid space as the data acquisition source of the measurement plane.

[0007] In addition, the inner covering simulation object B includes multiple slices, which are not necessarily stacked horizontally, but can be placed at an angle relative to the bottom surface of the quadrangular pyramid space, and adjacent two slices can also be stacked at an angle. Specifically, the adjacent two slices are placed parallel to each other, or the inclination angle of the adjacent two slices relative to the horizontal plane is mirror-symmetrically placed.

[0008] The utility model also requests protection the test method based on above-mentioned rescue detection equipment performance test system, specifically includes the following steps:

[0009] S1, four detection point positions a, b, c, d which are spaced from each other and have inconsistent heights are arranged around the outer periphery of the outer wall body simulation object A, and one detection point position Q is arranged directly above the geometric center of the outer wall body simulation object A; according to the contour shape of the inner covering simulation object B, signal receivers are arranged at the measurement point positions;

[0010] S2, the search and rescue simulation object is placed below or inside the inner covering simulation object B;

[0011] S3, the detection device to be tested is used to emit electromagnetic wave signals from the five detection point positions towards the search and rescue simulation object;

[0012] S4, twelve point signal strengths of the four detection point positions a, b, c, d are acquired based on the twelve measurement point positions; three plane signal strengths of the four detection point positions a, b, c, d and the detection point position Q directly above are acquired based on the three measurement planes;

[0013] S5, the comprehensive detection capability of the detection device to be tested is calculated according to the obtained point signal strengths and plane signal strengths.

[0014] In the above step S5, calculating the comprehensive detection capability of the detection device to be tested includes the following steps:

[0015] S5.1, the parallel detection performance Z of the detection device is calculated:

[0016] S5.1.1, the point signal strengths of the four detection points a, b, c, d distributed around the building simulation structure are calculated:

[0017]

[0018] In the formula: m represents the six measurement points whose data are ranked first among the twelve measurement points; p m Represents the weight, with a value of p. m =1 / 6; x m This represents the electromagnetic wave signal data received at the m-th measurement point; i = 1, 2, 3, 4, representing the four detection points a, b, c, and d, respectively.

[0019] S5.1.2 Calculate the surface signal intensity at four detection points a, b, c, and d distributed around the perimeter of the simulated building structure:

[0020]

[0021] In the formula: n = 1, 2, 3, representing the three measurement surfaces formed by the measurement points; y n This represents the electromagnetic wave signal data received by the nth measuring surface; s n The weights are set to 1 / 2, 1 / 4, and 1 / 4 in order from bottom to top on the measurement surface; i = 1, 2, 3, 4, representing the four detection points a, b, c, and d, respectively.

[0022] S5.1.3 Based on the point signal strength and area signal strength obtained above, calculate the detection capability Z values ​​for the four detection points a, b, c, and d respectively. i :

[0023] Z i =(X i +Y i ) / 2

[0024] After obtaining the detection capability values ​​of four detection points a, b, c, and d, a weighted average is calculated to obtain the parallel detection performance Z of the detection device.

[0025]

[0026] In the formula: k i The values ​​represent the weights: k1 for probe point a is 0.3, k2 for probe point b is 0.3, k3 for probe point c is 0.2, and k4 for probe point d is 0.2; i = 1, 2, 3, 4, representing the four probe points a, b, c, and d respectively.

[0027] S5.2 Calculate the vertical detection performance Y of the detection device. Q :

[0028]

[0029] m=1, 2, 3, represents three measurement planes composed of measurement points; Y Qm represents the electromagnetic wave signal data received by the mth measurement plane; h m represents the weight, and the value is 1 / 3;

[0030] S5.3 Calculate the comprehensive detection capability f of the detection device:

[0031] f=0.7Z+0.3Y Q .

[0032] In the setting of the five detection points, first, the first detection point, that is, the detection point a, is determined, and the detection point a is arranged at a position 3 meters outwardly extended from the outer edge of the outer wall body simulation object A, and the height from the ground is 0.3 meters; then, taking the detection point a as the starting point, taking the geometric center point of the building simulation structure as the center, the detection point b is arranged at a position 60° circumferentially rotated, and the height from the ground is 0.6 meters; taking the detection point a as the starting point, taking the geometric center point of the building simulation structure as the center, the detection point c is arranged at a position 150° circumferentially rotated, and the height from the ground is 0.9 meters; taking the detection point a as the starting point, taking the geometric center point of the building simulation structure as the center, the detection point d is arranged at a position 270° circumferentially rotated, and the height from the ground is 1.2 meters; and the detection point Q is arranged at a position 3 meters above the geometric center of the building simulation structure and the upper surface.

[0033] The advantage of the technical scheme of the utility model lies in that:

[0034] (1) The building simulation object which can be standardized and modularized manufactured is designed, the test data of different detection devices can be unified, and objective and reasonable performance evaluation can be conveniently made; the inner-outer double-layer structure composed of the outer wall body simulation object A and the inner covering simulation object B, and the angle-adjustable slice partition (cement reinforced prefabricated slab) of the inner covering simulation object B are used to make horizontal section signal blocking or reflection, and the restoration degree of the building collapse characteristics is high.

[0035] (2) The combined arrangement of the measurement points and the detection points can accurately detect the attenuation degree of the radar signal at multiple angles, the test difficulty is increased or decreased in combination with the adjustable cross section, and then the detection performance of the radar equipment is measured, so that the detection capability of a radar electromagnetic wave type detection equipment is accurately measured, and the comprehensive performance is evaluated.

[0036] (3) The building simulation object with the inner-outer double-layer structure can be tested after spraying water, covering ash layer and snowflakes, has wide application range, and can effectively test the detection capability and signal attenuation amplitude of the electromagnetic wave type detection equipment in a high-humidity environment (such as in a rainy state) and an extreme weather environment. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1It is building simulation structure schematic diagram of collapsed state of the test system of the utility model;

[0038] Figure 2 It is outer wall simulation structure schematic diagram of collapsed state of the test system of the utility model;

[0039] Figure 3 It is inner covering simulation structure schematic diagram of collapsed state of the test system of the utility model;

[0040] Figure 4 It is second embodiment structure schematic diagram of inner covering simulation of collapsed state of the test system of the utility model. DETAILED DESCRIPTION

[0041] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar components or components with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as a limitation on the utility model.

[0042] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like is a simplified description, and is not intended to indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0043] In the description of the utility model, it is understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two components. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0044] The performance test system of the rescue detection equipment of the utility model firstly designs the simulation of the building collapsed state environment, which can be standardized manufactured, through simulating the inclination effect of the inner and outer wall surface of the building caused by earthquake, explosion and other disaster accidents, the scene of the detection equipment in practical application, such as life detection, small radar, etc. with electromagnetic wave as the main function is reproduced. Figure 1 ,Figure 2 and Figure 3 , respectively, are building simulation structure schematic diagrams of the building collapse state of the utility model test system, outer wall simulation structure schematic diagram under the collapsed state and inner covering simulation structure schematic diagram under the collapsed state, the typical features of the building collapse state generally present as the cavity inclined collapse, the internal space covered by the floor debris state, therefore, the building simulation of the utility model includes two parts of the outer wall simulation A and the inner covering simulation B, the outer contour of the outer wall simulation A is designed as a right-angled quadrangular prism shape, the inside of the quadrangular prism is excavated as an inverted quadrangular prism space, referring to Figure 2 , the outer surface four circumferential surfaces are in an inclined state, and the inner surface four circumferential surfaces are also in an inclined state; the inner covering simulation B fills the space excavated in the outer wall simulation A, referring to Figure 3 , the inner covering simulation B is a structure of multiple layers stacked together, for example, a three-dimensional hollow structure composed of multiple layers of partitions, used for simulating the prefabricated plate collapse stacking of the building, the drawing shows the state of three layers of plate-shaped objects stacked, and obviously, it can also be provided as other multiple layers of stacking quantity. The overall shape of the inner covering simulation B is an inverted quadrangular prism shape, which is matched with the space excavated in the outer wall simulation A, so that the inner covering simulation B can be filled into the inside of the outer wall simulation A as a whole, and the object to be detected is placed at the bottom of the space excavated in the outer wall simulation A, below the inner covering simulation B, simulating the scene covered by the collapsed building.

[0045] The outer wall simulation A is first built based on the basic contour shape when built, and then the cement reinforced prefabricated plate is attached to the metal frame, and the inner covering simulation B can use one or more layers of reinforced cement prefabricated plates of appropriate size to form a cross-sectional slice. When the detection equipment (life detector, small radar) emits electromagnetic waves to the simulation for testing at a certain fixed position (variable) around the simulation, the electromagnetic waves successively pass through the outer inclined surface of the outer wall simulation A, part of the electromagnetic waves is diffusely reflected, part of the electromagnetic waves penetrates the outer reinforced cement plate, and the internal inclined surface, or the electromagnetic waves successively pass through the multiple layers of inner covering simulation B, causing the electromagnetic wave energy to attenuate multiple times, and then reach the gap between the outer wall simulation A and the inner covering simulation B in stages, until reaching the object to be detected. At this time, whether the electromagnetic wave still has the required detection ability and the size of the remaining detection ability directly feedback the comprehensive performance of the detection equipment.

[0046] In view of the complexity of the actual collapsed state of the building, the inner covering simulation B is not in the state of multiple layers of plate-shaped structure stacking, but in the structure of multiple irregular slices stacking, referring to Figure 4 , is a structure schematic diagram of the second embodiment of the inner covering simulation under the collapsed state of the utility model test system, in this embodiment, the slice of the inner covering simulation B is adjusted from horizontal to inclined, as Figure 4The inner covering analog B comprises a plurality of slices arranged in an inclined manner, and a central axis of each slice is inclined at an angle, such as 30°, with respect to a horizontal plane. The inclined angle of the slices is arranged to increase the penetration thickness of the electromagnetic wave in the vertical direction penetrating the prefabricated cement board, and to increase the reflection of the electromagnetic wave by changing the original plane into an inclined plane, to weaken the feedback strength of the electromagnetic wave signal, and to increase the detection difficulty. For example, assuming that the prefabricated cement board has a thickness of 8 cm, and the actual penetration thickness of the radar electromagnetic wave in the vertical direction after being inclined by 30° is L = 8 / COS 30°, and the value of L is about 9.23 cm.

[0047] In other embodiments, the inner covering analog B is not necessarily composed of complete and regular slices, but can be composed of more slices in a broken block shape and spliced with each other in space.

[0048] The specific working process of the test system of the utility model will be described in detail in combination with the above specific embodiments. During specific testing, the measurement points are arranged based on the building analog structure of the utility model, three measurement points are arranged along four edge lines in the interior excavated space of the outer wall analog A, and a total of twelve measurement points are used to measure the electromagnetic wave signals emitted by the external detection device. Referring to Figure 1 In this embodiment, the twelve measurement points include four points ABCD arranged on the upper plane of the interior excavated space, four points EFGH arranged on the bottom plane of the interior excavated space, and four points arranged on each of the two planes between the upper plane and the bottom plane. The eight measurement points can be preferably arranged on the planes where the surfaces of the slices of the inner covering analog B are located, such as the surface planes of the slices F1E1H1G1 and F2E2H2G2 in the illustrated embodiment. Meanwhile, one measurement point is arranged on each of the three planes E2F2G2H2, E1F1G1H1, and EFGH to obtain plane data, or three plane data are obtained by averaging four point data on the same plane. The twelve measurement points obtain twelve point data and three plane data EFGH, F1E1H1G1, and F2E2H2G2 (excluding the plane where ABCD is located, because the plane is essentially on the outer surface of the building analog structure).

[0049] In the arrangement of the detection device, the outer edge of the building simulation structure extends outward by 3 meters, and a first detection point a is determined at a height of 0.3 meters from the ground at this point. Then, taking the first detection point a as the starting point and the geometric center point of the building simulation structure as the center, a detection point b is set at a circumferential rotation of 60° and a height of 0.6 meters from the ground, a detection point c is set at a circumferential rotation of 150° and a height of 0.9 meters from the ground, and a detection point d is set at a circumferential rotation of 270° and a height of 1.2 meters from the ground, that is, the four detection points a, b, c, and d approximately show a spiral upward trend. Then, a detection point Q is set at a position 3 meters above the upper surface of the building simulation structure. Each detection point emits electromagnetic waves, and fifteen measurement data can be obtained from twelve measurement points. Taking the first detection point a as an example, the point data of the twelve measurement points are arranged from large to small, and the first six are selected for averaging as the point signal strength Xa. The weighted average of the three plane data is obtained as the surface signal strength Ya of the first detection point a. The plane data can be obtained by averaging the signal strengths of the four measurement points distributed on the same plane. The signal strengths of the other three detection points are obtained by repeating the measurement and using the same value selection method, and the point signal strengths and surface signal strengths are denoted as Xb, Xc, Xd, Yb, Yc, Yd, respectively. Then, the detection point Q above is tested, and only the surface signal strengths Y Q1 、Y Q2 、Y Q3 of the three plane data are obtained. The weighted average of the three surface signal strengths is also calculated as the surface signal strength Y Q of the detection point Q.

[0050] In evaluating the detection performance of a detection device, the parallel detection performance and the vertical detection performance are evaluated comprehensively. First, the acquisition method of the parallel detection performance is introduced:

[0051] According to the above spiral arrangement and vertical arrangement, five detection points are arranged. First, the point signal strengths of the four detection points a, b, c, and d distributed on the side of the building simulation structure are calculated:

[0052]

[0053] wherein m represents the six measurement points whose point data are ranked in the first six among the twelve measurement points; p m represents the weight, and p m = 1 / 6; x m represents the electromagnetic wave signal data received by the mth measurement point; i = 1, 2, 3, 4, respectively representing the four detection points a, b, c, and d.

[0054] The surface signal strengths of the four detection points a, b, c, and d distributed on the side of the building simulation structure are calculated:

[0055]

[0056] In the formula, n=1, 2, 3, represents three measurement planes formed by measurement points; y n represents the electromagnetic wave signal data received by the nth measurement plane; s n represents the weight, which is set to 1 / 2, 1 / 4, 1 / 4 in turn according to the measurement planes from bottom to top; i=1, 2, 3, 4, respectively represents four detection points a, b, c, d.

[0057] Based on the point signal intensity and the plane signal intensity calculated above, the detection capability values Z of the four detection points a, b, c, d are calculated i :

[0058] Z i =(X i +Y i ) / 2

[0059] After obtaining the detection capability values of the four detection points a, b, c, d, the weighted average calculation is performed on the detection capability values of the four detection points to obtain the parallel detection performance Z of the detection device:

[0060]

[0061] In the formula, k i represents the weight, the weight k1 of the detection point a is 0.3, the weight k2 of the detection point b is 0.3, the weight k3 of the detection point c is 0.2, and the weight k4 of the detection point d is 0.2; i=1, 2, 3, 4, respectively represents four detection points a, b, c, d.

[0062] The plane data intensity of the detection point Q arranged directly above the building simulation structure is calculated, and the plane data intensity is the vertical detection performance Y of the detection device:

[0063]

[0064] In the formula, m=1, 2, 3, represents three measurement planes formed by measurement points; Y Qm represents the electromagnetic wave signal data received by the mth measurement plane; h m represents the weight, which is 1 / 3.

[0065] Based on the obtained parallel detection performance Z and vertical detection performance Y Q The comprehensive detection capability f of the tested detection device is obtained, and the comprehensive detection capability f is:

[0066] f=0.7Z+0.3Y Q

[0067] Although the specific embodiments of the utility model are described above with reference to the drawings, it is not a limitation on the protection scope of the utility model, and the skilled in the art should understand that on the basis of the technical scheme of the utility model, various equivalent structures or equivalent processes of modification or deformation that can be made by the skilled in the art without creative labor, or direct or indirect application to other related technical fields, are still within the protection scope of the utility model.

Claims

1. A performance testing system for rescue detection equipment, characterized in that, The building simulation structure comprises an outer wall simulation A and an inner cover simulation B, the outer wall simulation A is a right-angled quadrangular prism, a quadrangular prism space is formed by digging downward from the upper surface of the outer wall simulation A, the four outer circumferential sides of the outer wall simulation A are inclined surfaces, and the four side surfaces of the quadrangular prism space are also inclined surfaces; The inner cover simulation B is composed of a plurality of stacked sub-components in the form of sheet or block structure, and the inner cover simulation B can be filled into the quadrangular prism space; The upper opening of the quadrangular prism space and the four corners of the bottom surface are respectively provided with a measuring point; between the upper opening and the bottom surface of the quadrangular prism space, two measuring surfaces are selected according to the profile of the inner cover simulation B, and one measuring point is arranged at each of the overlapping positions of the two measuring surfaces and the four side prisms of the quadrangular prism space, so that a total of twelve measuring points are arranged, and three measuring surfaces are arranged on the bottom surface of the quadrangular prism space and the two measuring surfaces. The outer wall simulation A is composed of a metal frame and a cement reinforced prefabricated plate attached to the metal frame; the sub-components of the inner cover simulation B are cement reinforced prefabricated components.

2. The rescue probe performance testing system of claim 1, further characterized by, The inner cover simulation B comprises a plurality of stacked slices, each of which is a cement reinforced prefabricated plate.

3. The rescue probe performance testing system of claim 1 or 2, further characterized by, The two measuring surfaces are selected on the surface of the slice, and one measuring point is arranged at the geometric center of the bottom surface of the quadrangular prism space as the data acquisition source of the measuring surface.

4. The rescue probe performance testing system of claim 3, further characterized by, The inner cover simulation B comprises a plurality of slices, and the slices are placed at a certain inclination angle relative to the bottom surface of the quadrangular prism space.

5. The rescue probe performance testing system of claim 1 or 2, further characterized by, The adjacent two slices are placed in parallel, or the inclination angles of the adjacent two slices relative to the horizontal plane are mirror-symmetrically placed.

6. The rescue probe performance testing system of claim 5, further characterized by, Four detection points a, b, c and d are arranged around the outer circumferential side of the outer wall simulation A, and the detection point Q is arranged directly above the geometric center of the outer wall simulation A; the search and rescue simulation is placed below the inner cover simulation B at the bottom of the quadrangular prism space.

7. The rescue probe performance testing system of claim 1, further characterized by, The detection point a is arranged at a position 3 meters outward from the outer edge of the outer wall simulation A and 0.3 meters above the ground; then, the detection point b is arranged at a position 0.6 meters above the ground and 60° circumferentially rotated from the detection point a and the geometric center of the building simulation structure as the center; the detection point c is arranged at a position 0.9 meters above the ground and 150° circumferentially rotated from the detection point a and the geometric center of the building simulation structure as the center; the detection point d is arranged at a position 1.2 meters above the ground and 270° circumferentially rotated from the detection point a and the geometric center of the building simulation structure as the center; 8. The rescue probe performance testing system of claim 7, further characterized by, The detection point Q is arranged directly above the geometric center of the building simulation structure at a position 3 meters above the upper surface. ​ ​

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