A detection system and method for radar life detector

Abstract

The present invention discloses a detection system and method for a radar life detector. The detection system includes: a detection scene simulation device, a mobile device, a human body simulation device, and a control device; one side of the detection scene simulation device is used as a placement area for the radar life detector to be tested, and the other side is used as a detection area; the mobile device is arranged relative to the other side of the detection scene simulation device; the human body simulation device is arranged on the mobile device; and the control device controls the mobile device to drive the human body simulation device to move within the detection area of ​​the detection scene simulation device. When performing detection, the beacon is controlled to move within the detection area, and the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate, and detection missed alarm rate of the radar life detector to be tested are completed. The solution provided by the present invention can comprehensively detect the detection performance of the radar life detector, with high detection accuracy and strong versatility.

Description

Technical Field

[0001] The invention relates to detection technology, in particular to performance detection technology of a radar life detector. Background Art

[0002] At various disaster sites such as earthquakes, landslides, collapses, and fires, various ruins pose a huge obstacle to the development of emergency rescue work. Firefighting radar life detectors are important tools for searching and rescuing survivors after disasters, and play a key role in the rapid development of emergency rescue work.

[0003] Combined with the use of life detectors in China's fire brigades, there are several common types of life detectors, including audio, video, infrared, etc., and radar life detectors are widely used because of their strong environmental adaptability, high efficiency, and good performance compared to other detectors.

[0004] The detection performance of radar life detectors is affected by factors such as the depth of penetration of ruins, the detection distance, and the magnitude of detection errors. At present, when describing the detection performance of radar life detectors produced by enterprises, they basically detect real human targets after penetrating a thicker continuous medium (such as solid red bricks); or detect real human targets at a certain distance after penetrating a fixed thickness continuous medium (such as a solid red brick wall) and an air medium. This test method cannot simulate the actual situation after the superposition of various ruins material media at the rescue site, which has a great impact on the penetration detection results; and the real human targets in each test have different breathing, heartbeat and other vital signs due to individual physical conditions, which also has a great impact on the universality of the detection results during the test.

[0005] Furthermore, most existing corporate standards also emphasize technical parameters such as long detection distance and large detection angle. In the corresponding test methods, due to the difference in thickness and width of the human body being measured and the lack of accurate measurement reference points, there are certain measurement errors in distance and angle; and the current test methods may capture some interference signals due to the high sensitivity of the equipment and determine that there is a person, or fail to capture effective signals due to low sensitivity and determine that there is no person, resulting in false alarms in detection.

[0006] It can be seen that providing a radar life detector performance detection solution with high detection accuracy, comprehensive detection and universality is an issue that urgently needs to be solved in this field. Summary of the invention

[0007] Aiming at the problems existing in the existing radar life detector performance detection scheme, a new radar life detector performance detection scheme is needed.

[0008] To this end, the purpose of the present invention is to provide a detection system for a radar life detector, and also to provide a detection method for a radar life detector, thereby accurately and comprehensively detecting the performance of the radar life detector.

[0009] In order to achieve the above object, the detection system of the radar life detector provided by the present invention comprises:

[0010] A detection scene simulation device, one side of which is used as a placement area for the radar life detector to be tested, and the other side of which is used as a detection area;

[0011] A moving device, the moving device is arranged relative to the other side of the detection scene simulation device;

[0012] A human body simulation device, wherein the human body simulation device is arranged on a mobile device;

[0013] A control device controls the moving device to drive the human body simulation device to move within the detection area of ​​the detection scene simulation device.

[0014] Furthermore, the detection scene simulation device includes a rotating chassis, and a plurality of discontinuous medium layers arranged on the rotating chassis, and the arrangement of the plurality of discontinuous medium layers can be randomly interchanged.

[0015] Furthermore, the multiple discontinuous dielectric layers include at least three dielectric layers made of different materials.

[0016] Furthermore, the moving device is a track moving device, including a first linear track, a first movable disk platform, a second linear track, a second movable platform, and a lifting platform. The first linear track is placed in the detection area relative to the detection scene simulation device, the first movable disk platform is movably placed on the first linear track, the second linear track is placed on the first movable disk platform and is perpendicular to the first linear track, the second movable platform is movably placed on the second linear track, and the lifting platform is placed on the second movable platform.

[0017] Furthermore, the mobile device includes a wheeled mobile mechanism and a camera. The wheeled mobile mechanism is controlled by a control device to drive the human body simulation device to move freely within the detection area. The camera is arranged at the upper part of the detection area and is controlled by the control device to calibrate and divide the position of the wheeled mobile mechanism within the detection area as error feedback to form a closed-loop control of the wheeled mobile mechanism.

[0018] Furthermore, the human body simulation device is composed of a beacon that can simulate human life characteristic information.

[0019] In order to achieve the above object, the present invention provides a detection method for a radar life detector, the detection method comprising:

[0020] Simulating the detection scene through at least three layers of discontinuous dielectric layers to form the placement area and detection area of ​​the radar life detector to be tested, and setting a beacon device simulating human life characteristic information in the detection area;

[0021] The beacon is controlled to move in the detection area to complete the detection of the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate and detection missed alarm rate of the radar life detector to be tested.

[0022] Furthermore, the detection method determines a measurement reference point, randomly selects test points multiple times within the detection range of the radar life detector to be tested, performs root mean square statistics on the distance and angle information obtained from the test, and obtains the error between the test value and the actual value.

[0023] Furthermore, the detection method determines a measurement reference point, randomly selects test points multiple times within the detection range of the radar life detector to be tested, turns on or off the beacon for testing, and records the missed alarm rate and the false alarm rate respectively to determine the detection false alarm rate.

[0024] The solution provided by the present invention can comprehensively detect the detection performance of the radar life detector, and has high detection accuracy and strong versatility.

[0025] Furthermore, the solution provided by the present invention can realize automatic detection of the detection performance of the radar life detector.

[0026] In addition, the solution provided by the present invention is easy to implement and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 It is a structural schematic diagram of a detection system of a radar life detector in an example of the present invention;

[0029] Figure 2 This is a schematic diagram of the detection distance range of the radar life detector in this example;

[0030] Figure 3 This is a schematic diagram of the detection angle range of the radar life detector in this example;

[0031] Figure 4 This is a schematic diagram of the detection distance error detection of the radar life detector in this example;

[0032] Figure 5 This is a schematic diagram of the radar life detector positioning angle error detection in this example. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0034] This example uses common building materials in earthquake-prone areas and the wavelength of life detection radars. It selects red bricks, prefabricated panels, foam, wood, gypsum boards, plastics and other materials and specifies their thickness, height and width to build multi-layer discontinuous dielectric walls. The dielectric layers can be randomly combined and the arrangement order can be randomly interchanged. In this way, the actual situation and fixed materials are simulated based on multi-layer discontinuous dielectric walls, and the detection scene of the radar life detector is constructed in conjunction with the transformation combination method, thereby realizing a comprehensive test of the detection performance of the radar life detector.

[0035] See also Figure 1 , which is a schematic diagram of the structure of the detection system of the radar life detector constructed based on the above principle in this example.

[0036] As can be seen from the figure, the radar life detector performance detection system 100 is mainly composed of a detection scene simulation device 110, a track moving device 120, a human body simulation device 130 and a control device (not shown) that cooperate with each other.

[0037] The detection scene simulation device 110 in the system is used to simulate the detection scene. It is mainly composed of a rotating chassis 111 and multiple discontinuous medium layers 112 arranged on the rotating chassis, and the order of each layer in the multiple discontinuous medium layers can be randomly interchanged.

[0038] Since the radar detection angle is generally in the range of 60° on the left and 60° on the right, for a total of 120°, this example uses a rotating chassis 111 as a base to carry the multiple discontinuous dielectric layers 112 .

[0039] The rotating chassis 111 is provided with a placement track 113 for movably placing multiple discontinuous medium layers 112 , and the multiple discontinuous medium layers 112 can be randomly combined and their arrangement order can be randomly interchanged, thereby improving the simulation effect.

[0040] The specific structure of the rotating chassis 111 can be determined according to the requirements. The rotation of the chassis can be driven manually or automatically by a driving component.

[0041] like Figure 2As shown, for the multi-layer discontinuous dielectric layer 112, this example preferably consists of three dielectric layers of different materials, including a first dielectric layer 112a, a second dielectric layer 112b, and a third dielectric layer 112c. The three detection dielectric layers all adopt a cube structure of the same size, preferably a cube structure with an outer size (length, width, and height) of 2m×2m×0.3m.

[0042] Meanwhile, the first medium layer 112a medium 1 is constructed by masonry bricks and mortar, the second medium layer 112b is constructed by prefabricated panels and mortar, and the third medium layer 112c is constructed by splicing pine boards.

[0043] In the specific implementation:

[0044] a) Wall bricks should comply with the requirements of GB 5101;

[0045] b) Prefabricated panels should comply with the requirements of GB / T 14040;

[0046] c) The moisture content of pine boards should be 10% to 14%;

[0047] d) Mortar and masonry works should comply with the requirements of GB 50203.

[0048] The three discontinuous dielectric layers 112 thus formed can well simulate the working environment of a radar life detector.

[0049] The bottom of each of the three discontinuous medium layers 112 of such a structure is provided with a pulley that cooperates with the track 113 arranged on the rotating chassis 111, thereby enabling each of the three discontinuous medium layers 112 to be movably arranged on the rotating chassis 111, thereby enabling the three discontinuous medium layers 112 to be randomly combined and their arrangement order to be randomly interchanged.

[0050] Preferably, the first medium layer 112a, which is most commonly made of masonry bricks and mortar in the actual environment, can be fixed in the center of the rotating chassis 111, and pulleys that match the installation track 113 on the rotating chassis 111 are set at the bottom of the second medium layer 112b and the third medium layer 112c, so that the second medium layer 112b and the third medium layer 112c can be moved and adjusted on the installation track on the rotating chassis 111, and the order can be adjusted according to the actual test needs. For example, when detecting a straight line, the three discontinuous medium layers 112 on the turntable can be moved together; when detecting the angular range, the second medium layer 112b and the third medium layer 112c can be moved to a place outside the turntable, and only the first medium layer 112a is used.

[0051] The detection scene simulation device based on the three discontinuous dielectric layers 112 and the rotating chassis 111 can well simulate the working environment of the radar life detector. Among them, one side of the three discontinuous dielectric layers 112 is used as the placement area 114 of the radar life detector to be tested, which is used to place the radar life detector 200 to be tested, preferably at the center position of 1 meter wide and 1 meter high; and the area on the other side of the three discontinuous dielectric layers 112 is used as the detection area 115. Due to the setting of the corresponding human body simulation device (such as Figure 5 shown).

[0052] The track moving device 120 in this system is set in the detection area 115 of the detection scene simulation device, and is used to drive the human body simulation device 130 to move in the detection area 115, and cooperate with the detection scene simulation device 110 to complete the performance detection of the radar life detector 200 in the installation area 114.

[0053] As can be seen from the figure, the track moving device 120 is mainly composed of a first linear track 121, a first moving disk platform 122, a second linear track 123, a second moving platform 124, and a lifting platform 125.

[0054] The first linear track 121 is arranged in the detection area relative to the detection scene simulation device, and the first movable disk platform 122 is movably arranged on the first linear track 121 to drive the components arranged thereon to move forward and backward in a straight line relative to the detection scene simulation device 110. Preferably, the first movable disk platform 122 is driven by electric energy to achieve precise automatic movement.

[0055] The second linear track 123 is arranged on the first movable disk platform 122 and is perpendicular to the first linear track 121. Meanwhile, the second movable platform 124 is movably arranged on the second linear track 123 to drive the components arranged thereon to move linearly left and right relative to the detection scene simulation device 110. Preferably, the first movable disk platform 122 is driven by electric energy to achieve precise automatic movement.

[0056] The lifting platform 125 is placed on the second mobile platform 124, and is used to carry the human body simulation device 130. Preferably, the lifting platform 125 is driven by electric energy to achieve accurate automatic lifting.

[0057] The track moving device 120 thus constructed can achieve precise positioning and movement based on two sets of tracks and two sets of moving platforms, effectively ensuring the accuracy of the moving position of the human body simulation device in the detection area 115.

[0058] The human body simulation device 130 in the system is placed on the lifting platform 125 in the track moving device 120, and is used to simulate a human body with life characteristic signals.

[0059] In this example, a beacon that can simulate human vital signs is preferably used, which can simulate human breathing frequency and corresponding simulated breathing amplitude. The beacon is placed on the lifting platform 125, and can be adjusted to a height of 1.55M to 1.85M under the drive of the lifting platform 125 to simulate different human heights to improve the accuracy of the test.

[0060] In the specific implementation, considering the need of multi-target detection, two or more sets of human body simulation devices can be set on the track moving device 120, so that the multiple human body simulation devices (beacons) are not on the same axis, and are used to detect radar detection of two or more multi-target signals.

[0061] When setting up multiple sets of human body simulation devices, multiple sets of mobile platform mechanisms consisting of a first moving disk platform 122, a second linear track 123, a second moving platform 124, and a lifting platform 125 are set on the first linear track 121 of the track moving device 120, and corresponding human body simulation devices (beacon instruments) are placed thereon.

[0062] Regarding the solution of using the track moving device 120 to drive the human body simulation device 130 to move accurately within the detection area in this system, this example also provides an alternative solution, which is to use a wheeled moving mechanism and a camera to replace the track moving device 120.

[0063] In this alternative scheme, the wheeled mobile mechanism serves as a supporting device for the human body simulation device 130 and is controlled by the control device to drive the human body simulation device 130 to move freely within the detection area. The camera is arranged at the upper part of the detection area to calibrate the position of the wheeled mobile mechanism within the detection area as error feedback to form a closed-loop control, thereby accurately controlling the moving direction of the human body simulation device 130 driven by the wheeled mobile mechanism within the detection area.

[0064] The control device in this example is used to control the track moving device 120 to drive the human body simulation device 130 to move within the detection area of ​​the detection scene simulation device, and can also control and adjust the life characteristic signal generated by the human body simulation device 130.

[0065] The control device in this example can realize the control of the track moving device 120 and the human body simulation device 130 in a wireless or effective manner.

[0066] Furthermore, the control device can be implemented in various forms, such as a PC installed in a control room, a mobile terminal installed in a test control system, etc., which can be determined according to actual needs.

[0067] The radar life detector performance detection system 100 constructed based on the above scheme can realize remote wireless remote control, adjust the front and back, left and right, height distance and the opening and closing of the beacon, and the precise rotation angle of the turntable, which can be used for fully automatic blind test of radar detection capabilities.

[0068] This example further provides a solution for using the above radar life detector performance detection system to perform radar life detector performance detection.

[0069] When testing radar life detectors, you first need to simulate and build a corresponding test environment.

[0070] This example is realized by the cooperation of the rotating chassis 111 and the multi-layer discontinuous medium layer 112 in the detection scene simulation device 110. Three layers of discontinuous medium layers (wall layer, prefabricated board layer and pine board layer) are combined on the rotating chassis 111 to simulate the detection scene, and the placement area and detection area of ​​the radar life detector to be tested are formed on both sides thereof. At the same time, the radar life detector 200 to be tested is placed in the placement area and adjusted to the central position of 1 meter wide and 1 meter high.

[0071] Next, the system is initialized, that is, the initial position and height of the beacon in the detection area are adjusted by the control device (as described above).

[0072] Next, according to the test requirements, corresponding control parameters are input into the control device, such as the location information of the beacon, the turning on and off of the beacon signal, the status information of simulating human life characteristics, etc. The control device forms corresponding control instructions to control the beacon to move in the detection area, and completes the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate and detection missed alarm rate of the radar life detector to be tested.

[0073] Among them, by determining the measurement reference point, randomly selecting test points multiple times within the detection range of the radar life detector to be tested, performing root mean square statistics on the distance and angle information obtained from the test, and obtaining the error between the test value and the actual value.

[0074] Furthermore, by determining the measurement reference point, randomly selecting test points multiple times within the detection range of the radar life detector to be tested, turning the beacon on or off for testing, and recording the missed alarm rate and false alarm rate respectively to determine the detection false alarm rate.

[0075] The following example illustrates the process of completing the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate and detection missed alarm rate detection for the radar life detector.

[0076] Detection distance range detection

[0077] See also Figure 2 , which is a schematic diagram of the detection distance range detection of the radar life detector in this example.

[0078] As can be seen from the figure, when performing the detection, multiple layers of detection medium layers 112 and air medium with interchangeable arrangement order are spaced between the radar life detector 200 and the beacon 130, wherein the detection medium layer 112 preferably has three layers: the first medium layer 112a, the second medium layer 112b, and the third medium layer 112c. The three detection medium layers adopt a cubic structure with an outer dimension (length, width, and height) of 2m×2m×0.3m; at the same time, the first medium layer 112a medium 1 is made of masonry bricks and mortar, the second medium layer 112b is made of prefabricated panels and mortar, and the third medium layer 112c is made of pine wood boards.

[0079] The radar life detector to be tested is located in the placement area 114 and is set up at the center of the detection medium surface and close to the detection medium layer surface. According to the maximum detection distance value L of the detector, the beacon 130 is placed L far in front of the radar life detector to be tested, and the radar host is detected in both horizontal and vertical directions.

[0080] Detection angle range test

[0081] See also Figure 3 , which is a schematic diagram of the detection angle range detection of the radar life detector in this example.

[0082] As can be seen from the figure, when performing the detection, a single layer of medium 1 and air medium are placed between the radar life detector 200 and the beacon 130. The radar life detector 200 is located in the placement area 114 and is set up at the center of the detection medium surface and is close to the detection medium surface. According to the maximum detection angle value θ and the maximum detection distance value L of the detector, the beacon is placed L / 2 away in the θ / 2 angle direction in front of the radar life detector 200, and the radar host is detected in the horizontal and vertical directions respectively.

[0083] Detection distance error test

[0084] See also Figure 4 , which is a schematic diagram of the detection distance error detection of the radar life detector in this example. When performing this detection, multiple detection medium layers 112 and air medium with interchangeable arrangement order are spaced between the radar life detector 200 and the beacon 130. Here, the detection medium layer 112 is preferably three layers (as described above for the detection distance range detection).

[0085] The radar life detector 200 to be tested is located in the placement area 114, and is set up at the center of the detection medium surface and close to the surface of the detection medium layer. Within the maximum detection distance value L in front of the radar life detector 200, 10 beacon distances l (l≤L) are randomly set for detection, and the difference between each detection distance value and the actual distance value is the detection distance error.

[0086] Positioning angle error test

[0087] See also Figure 5 , which is a schematic diagram of the radar life detector positioning angle error detection in this example.

[0088] As can be seen from the figure, when performing this detection, a single layer of medium 1 and air medium are separated between the radar life detector 200 and the beacon 130. The radar life detector 200 is located in the installation area 114 and is set up at the center of the detection medium surface and is close to the detection medium surface.

[0089] At the same time, in the test area 115 (i.e., directly in front of the radar host), a parallelogram test range 116 is outlined, and the angle θ1 (θ1≤θ) and distance l (l≤L) of the beacon are randomly set 10 times within the range for detection. The difference between each detected angle value and the actual angle value is the positioning angle error.

[0090] Detection false alarm rate test

[0091] Based on the test method of detection distance error test and positioning angle error test, a total of 10 detections are conducted, and the percentage of the number of detections made when the beacon is not turned on to the total number of detections is set as the false alarm rate.

[0092] Detection false alarm rate test

[0093] Based on the test method of detection distance error test and positioning angle error test, a total of 10 detections are conducted, and the percentage of the number of times the beacon is turned on but not detected in the total number of detections is the missed alarm rate.

[0094] From the above example, it can be seen that the scheme given in this example can detect the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate and detection missed alarm rate of the radar life detector. The detection range is comprehensive and the detection results are accurate.

[0095] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. The detection system of radar life detector is characterized by: include: A detection scene simulation device, wherein the detection scene simulation device is composed of a rotating chassis and three discontinuous medium layers arranged on the rotating chassis to simulate the detection scene, wherein the first medium layer is made of masonry bricks and mortar, the second medium layer is made of prefabricated panels and mortar, and the third medium layer is spliced ​​with pine boards, the first medium layer is fixed at the center of the rotating chassis, and pulleys matching the rotating chassis are arranged at the bottom of the second medium layer and the third medium layer, and the second medium layer and the third medium layer can be moved and adjusted on the rotating chassis, and when detecting the opening angle range, the second medium layer and the third medium layer can be moved to a place outside the turntable, and only the first medium layer is used; One side of the three-layer dielectric layer is used as the placement area of ​​the radar life detector to be tested, and the other side is used as the detection area; the radar life detector to be tested is located in the placement area, and is set up at the center of the detection medium surface and close to the surface of the detection medium layer; A mobile device, wherein the mobile device is arranged relative to a detection area of ​​the detection scene simulation device; A human body simulation device, wherein the human body simulation device is arranged on a mobile device; A control device controls the moving device to drive the human body simulation device to move within the detection area of ​​the detection scene simulation device.

2. The detection system of the radar life detector according to claim 1, characterized in that: The moving device is a track moving device, including a first linear track, a first moving disk platform, a second linear track, a second moving platform, and a lifting platform. The first linear track is placed in the detection area relative to the detection scene simulation device, the first moving disk platform is movably placed on the first linear track, the second linear track is placed on the first moving disk platform and is perpendicular to the first linear track, the second moving platform is movably placed on the second linear track, and the lifting platform is placed on the second moving platform.

3. The detection system of the radar life detector according to claim 1, characterized in that: The mobile device includes a wheeled mobile mechanism and a camera. The wheeled mobile mechanism is controlled by a control device to drive the human body simulation device to move freely within the detection area. The camera is arranged at the upper part of the detection area and is controlled by the control device to calibrate and divide the position of the wheeled mobile mechanism within the detection area as error feedback to form a closed-loop control of the wheeled mobile mechanism.

4. The detection system of the radar life detector according to claim 1, characterized in that: The human body simulation device is composed of a beacon instrument that can simulate human life characteristic information.

5. A detection method of a radar life detector, characterized in that: The detection method is based on the detection system of the radar life detector according to any one of claims 1 to 4, comprising: Simulating the detection scene through at least three layers of discontinuous dielectric layers to form the placement area and detection area of ​​the radar life detector to be tested, and setting a beacon device simulating human life characteristic information in the detection area; The beacon is controlled to move in the detection area to complete the detection of the detection distance range, detection angle range, detection distance error, positioning angle error, detection false alarm rate and detection missed alarm rate of the radar life detector to be tested.

6. The detection method of the radar life detector according to claim 5, characterized in that: The detection method determines a measurement reference point, randomly selects test points multiple times within the detection range of the radar life detector to be tested, performs root mean square statistics on the distance and angle information obtained from the test, and obtains the error between the test value and the actual value.

7. The detection method of the radar life detector according to claim 5, characterized in that: The detection method determines a measurement reference point, randomly selects test points multiple times within the detection range of the radar life detector to be tested, turns on or off the beacon for testing, and records the missed alarm rate and the false alarm rate respectively to determine the detection false alarm rate.

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