Electromagnetic radiation safety inspection device of millimeter wave holographic imaging human body safety inspection equipment

Abstract

The invention discloses an electromagnetic radiation safety inspection device of millimeter wave holographic imaging human body safety inspection equipment. The electromagnetic radiation safety inspection device comprises a 360-degree laser radar sensor, a millimeter wave antenna, a millimeter wave antenna automatic moving mechanism, a millimeter wave power density sample automatic acquisition device and a control system, the 360-degree laser radar sensor, the millimeter wave antenna automatic moving mechanism and the millimeter wave power density sample automatic acquisition device are all in communication connection with the control system, and the millimeter wave antenna is in communication connection with the millimeter wave power density sample automatic acquisition device. Automation of electromagnetic radiation safety inspection of the millimeter wave holographic imaging human body safety inspection equipment can be achieved, manual reference point measurement, manual millimeter wave antenna movement and manual spectrum analyzer operation are not needed, a large amount of manual participation can be reduced, and safety inspection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of security inspection equipment, and particularly relates to an electromagnetic radiation security inspection device for millimeter-wave holographic imaging human body security inspection equipment. Background Art

[0002] In GB / T41482-2022 "Millimeter-wave Holographic Imaging Human Body Security Inspection Equipment", the equipment that uses the millimeter-wave holographic imaging method to inspect items carried on the human body surface is defined as millimeter-wave holographic imaging human body security inspection equipment. And in Appendix D of GB / T41482-2022 "Millimeter-wave Holographic Imaging Human Body Security Inspection Equipment", the operation method for electromagnetic radiation security inspection of millimeter-wave holographic imaging human body security inspection equipment is standardized, and this method is used to check whether the electromagnetic radiation of millimeter-wave holographic imaging human body security inspection equipment meets the national standard requirements.

[0003] The operation mode of electromagnetic radiation security inspection of millimeter-wave holographic imaging human body security inspection equipment is as follows: First, install the millimeter-wave antenna on the bracket, and the height of the bracket can be manually adjusted; Second step, manually measure the center point of the inspection channel and use this as a reference point, manually move the bracket to each measurement position, and adjust the millimeter-wave antenna to different heights; Third step, manually operate the spectrum analyzer to collect, analyze, and obtain the maximum power density sample value at the measurement position where the millimeter-wave antenna is located; Fourth step, repeat the second and third steps until the collection of the maximum power density sample values at all measurement positions is completed, manually record the maximum power density sample value corresponding to each measurement position, and complete the security inspection work record report.

[0004] During the existing security inspection operation process, a large number of links require manual intervention, resulting in a long operation time and cumbersome operation. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention aims to provide an electromagnetic radiation security inspection device for millimeter-wave holographic imaging human body security inspection equipment.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An electromagnetic radiation security inspection device for millimeter-wave holographic imaging human body security inspection equipment, comprising a 360-degree lidar sensor, a millimeter-wave antenna, a millimeter-wave antenna automatic moving mechanism, a millimeter-wave power density sample automatic collection device, and a control system; the 360-degree lidar sensor, the millimeter-wave antenna automatic moving mechanism, and the millimeter-wave power density sample automatic collection device are all communicatively connected to the control system, and the millimeter-wave antenna is communicatively connected to the millimeter-wave power density sample automatic collection device;

[0008] The millimeter wave antenna automatic moving mechanism includes a controller, a 1-axis sliding platform, a 2-axis sliding platform, a 3-axis lifting platform, a 4-axis rotating platform and a millimeter wave antenna bracket; the 360-degree laser radar sensor and the millimeter wave antenna are both installed on the millimeter wave antenna bracket; the controller is respectively controlled and connected to the 1-axis sliding platform, the 2-axis sliding platform, the 3-axis lifting platform and the 4-axis rotating platform, and is communicatively connected to the control system;

[0009] The 2-axis sliding platform is arranged on the 3-axis lifting platform and is driven by the 3-axis lifting platform to move up and down in the vertical direction, the 4-axis rotating platform is arranged on the 2-axis sliding platform and is driven by the 2-axis sliding platform to move linearly in the horizontal direction, the 1-axis sliding platform is arranged on the 4-axis rotating platform and is driven by the 4-axis rotating platform to rotate horizontally, the millimeter wave antenna bracket is fixed on the 1-axis sliding platform and is driven by the 1-axis sliding platform to move linearly in the horizontal direction; the transceiver port of the millimeter wave antenna is oriented parallel to the horizontal movement direction of the slider of the 1-axis sliding platform;

[0010] The millimeter wave power density sample automatic acquisition module includes a spectrum analyzer, and the spectrum analyzer is communicatively connected to the millimeter wave antenna and the control system respectively.

[0011] Furthermore, the 1-axis sliding platform and the 2-axis sliding platform are both composed of a horizontal movement driving mechanism, a horizontal slide and a horizontal movement driver, the horizontal movement driver is respectively connected to the horizontal movement driving mechanism and a controller, and the horizontal movement driving mechanism is transmission-connected to the horizontal slide.

[0012] Furthermore, the three-axis lifting platform is composed of a lifting drive mechanism, a scissors-type lifting structure, a base, a lifting platform and a lifting drive. The lifting drive is respectively connected to the controller and the lifting drive mechanism. The scissors-type lifting structure is arranged on the base. The lifting drive mechanism is transmission-connected to the scissors-type lifting structure and drives the scissors-type lifting structure to move up and down; the lifting platform is fixed to the top of the scissors-type lifting structure.

[0013] Furthermore, the four-axis rotating platform is composed of a rotating drive mechanism, a rotating platform and a rotating driver. The rotating driver is respectively connected to the rotating drive mechanism and a controller. The rotating drive mechanism is transmission-connected to the rotating platform and drives the rotating platform to rotate horizontally.

[0014] The present invention also provides a method for performing electromagnetic radiation security inspection of millimeter wave holographic imaging human body security inspection equipment using the above security inspection device, and the specific process is as follows:

[0015] In the first step, the staff places the safety inspection device in the inspection channel of the inspected equipment and starts the safety inspection device;

[0016] In the second step, the control system obtains the surrounding spatial point cloud data through the 360-degree lidar sensor, obtains the spatial dimensions and physical spatial positions of the inspection channels of the device under inspection based on the data sensed by the 360-degree lidar sensor, and obtains the physical spatial coordinate information of the center points of the inspection channels as the coordinate information of the reference points.

[0017] In the third step, based on the coordinate information of the reference points obtained in the second step, the control system controls the start of the millimeter-wave antenna automatic movement module. The millimeter-wave antenna automatic movement module drives the millimeter-wave antenna to move to the position of the reference point, and then starts the millimeter-wave power density sample automatic collection device. The spectrum analyzer obtains the millimeter-wave power density data at the position where the millimeter-wave antenna is located based on the electromagnetic radiation signal emitted by the device under inspection collected by the millimeter-wave antenna.

[0018] In the fourth step, the control system further controls the millimeter-wave antenna automatic movement module to drive the millimeter-wave antenna to move to each set measurement position, and obtains the millimeter-wave power density data corresponding to each measurement position through the spectrum analyzer.

[0019] Furthermore, the control system further summarizes the millimeter-wave power density data at the reference point and all measurement positions and automatically generates a work record report for the user to view.

[0020] The beneficial effects of the present invention are as follows: Using the present invention, the automation of electromagnetic radiation safety inspection of millimeter-wave holographic imaging human body security inspection equipment can be realized. There is no need for manual measurement of reference points, no need for manual movement of millimeter-wave antennas, and no need for manual operation of spectrum analyzers, which can reduce a large amount of manual participation and improve the efficiency of safety inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the safety inspection device described in Embodiment 1 of the present invention;

[0022] Figure 2 It is an overall structural schematic diagram of the millimeter-wave antenna automatic movement mechanism described in Embodiment 1 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] The following will further describe the present invention with reference to the drawings. It should be noted that this embodiment is based on the present technical solution and gives detailed implementation manners and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0024] Embodiment 1

[0025] This embodiment provides an electromagnetic radiation safety inspection device for millimeter-wave holographic imaging human body security inspection equipment, as Figure 1-2As shown in the figure, it includes a 360-degree lidar sensor 1, a millimeter-wave antenna 2, a millimeter-wave antenna automated moving mechanism 3, a millimeter-wave power density sample automatic acquisition device 4, and a control system 5. The 360-degree lidar sensor 1, the millimeter-wave antenna automated moving mechanism 3, and the millimeter-wave power density sample automatic acquisition device 4 are all communicatively connected to the control system 5, and the millimeter-wave antenna 2 is communicatively connected to the millimeter-wave power density sample automatic acquisition device 4.

[0026] The millimeter-wave antenna automated moving mechanism 3 includes a controller, a 1-axis sliding platform 31, a 2-axis sliding platform 32, a 3-axis lifting platform 33, a 4-axis rotating platform 34, and a millimeter-wave antenna bracket 35. The 360-degree lidar sensor 1 and the millimeter-wave antenna 2 are both installed on the millimeter-wave antenna bracket 35. The controller is respectively connected to control the 1-axis sliding platform 31, the 2-axis sliding platform 32, the 3-axis lifting platform 33, and the 4-axis rotating platform 34, and is communicatively connected to the control system 5.

[0027] The 2-axis sliding platform 32 is arranged on the 3-axis lifting platform 33 and is driven by the 3-axis lifting platform 33 to move up and down in the vertical direction. The 4-axis rotating platform 34 is arranged on the 2-axis sliding platform 32 and is driven by the 2-axis sliding platform 32 to move linearly in the horizontal direction. The 1-axis sliding platform 31 is arranged on the 4-axis rotating platform 34 and is driven by the 4-axis rotating platform 34 to rotate horizontally. The millimeter-wave antenna bracket 35 is fixed to the 1-axis sliding platform 31 and is driven by the 1-axis sliding platform 31 to move linearly in the horizontal direction. The orientation of the transceiver port of the millimeter-wave antenna 2 is parallel to the horizontal movement direction of the slider of the 1-axis sliding platform 31.

[0028] The millimeter-wave power density sample automatic acquisition module 4 includes a spectrum analyzer. The spectrum analyzer is respectively communicatively connected to the millimeter-wave antenna 2 and the control system 5. The spectrum analyzer is used to receive the millimeter-wave electromagnetic radiation signal emitted by the device under test obtained by the millimeter-wave antenna and output the millimeter-wave power density data at the position of the millimeter-wave antenna. The control system can adapt the control instructions according to the millimeter-wave frequency band of the device under test and the model of the spectrum analyzer.

[0029] In this embodiment, the 1-axis sliding platform 31 and the 2-axis sliding platform 32 are both composed of a horizontal movement stepping motor, a horizontal movement transmission mechanism, a horizontal slide, and a horizontal movement driver. The horizontal movement driver is respectively connected to the horizontal movement stepping motor and the controller. The horizontal movement stepping motor is connected to the horizontal slide through the horizontal movement transmission mechanism. During operation, the controller issues an instruction to the horizontal movement driver according to the instruction of the control system. After receiving the instruction from the controller, the horizontal movement driver drives the horizontal movement stepping motor to work, and the horizontal movement stepping motor drives the slider on the horizontal slide to move horizontally in a straight line.

[0030] In this embodiment, the 3-axis lifting platform 33 is composed of a lifting stepper motor, a lifting transmission mechanism, a scissor lifting structure 331, a base 332, a lifting platform 333, and a lifting driver. The lifting driver is respectively connected to the controller and the lifting stepper motor. The scissor lifting structure 331 is arranged on the base 332. The lifting stepper motor is connected to the scissor lifting structure 331 through the lifting transmission mechanism and drives the scissor lifting structure 331 to lift up and down. The lifting platform 333 is fixed to the top of the scissor lifting structure 331. The millimeter-wave antenna automatic moving mechanism of this embodiment can be folded and unfolded through the scissor lifting structure. When folded, the structure is compact and convenient for storage. When unfolded, the scissor arms have a large lifting space, the lifting platform is stable, and under the condition of ensuring the unchanged working load intensity, the overall weight of the structure is light and convenient for carrying and transportation. During operation, the controller issues an instruction to the lifting driver according to the instruction of the control system. After receiving the instruction from the controller, the lifting driver drives the lifting stepper motor to work. The lifting stepper motor drives the scissor lifting structure to lift up and down through the lifting transmission mechanism, thereby driving the lifting platform to lift up and down.

[0031] In this embodiment, the 4-axis rotating platform is composed of a rotating stepper motor, a rotating transmission mechanism, a rotating platform, and a rotating driver. The rotating driver is respectively connected to the rotating stepper motor and the controller. The rotating stepper motor is connected to the rotating platform through the rotating transmission mechanism and drives the rotating platform to rotate horizontally. During operation, the controller issues an instruction to the rotating driver according to the instruction of the control system. After receiving the instruction from the controller, the rotating driver drives the rotating stepper motor to work. The rotating stepper motor drives the rotating platform to rotate horizontally through the rotating transmission mechanism.

[0032] More specifically, in this embodiment, the housing of the horizontal slide of the 2-axis sliding platform 32 is fixed to the lifting platform 333 of the 3-axis lifting platform 33. The base of the rotating platform of the 4-axis rotating platform 34 is fixed to the slider of the horizontal slide of the 2-axis sliding platform 32. The housing of the horizontal slide of the 1-axis sliding platform 31 is fixed to the rotating plane of the rotating platform of the 4-axis rotating platform 34. The millimeter-wave antenna bracket 35 is fixed to the slider of the horizontal slide of the 1-axis sliding platform 31.

[0033] During operation, the millimeter-wave antenna can be driven to move back and forth along the orientation of the transceiver port of the millimeter-wave antenna by the 1-axis sliding platform, can be driven to move in both lateral directions by the 2-axis sliding platform, can have its height adjusted by the 3-axis lifting platform, and can have its orientation adjusted by the 4-axis rotating platform. As a result, the orientation of the transceiver port of the millimeter-wave antenna can be adjusted according to the actual position of the millimeter-wave emission source of the device under inspection, so as to keep it oriented towards the millimeter-wave emission source of the device under inspection.

[0034] Embodiment 2

[0035] This embodiment provides a method for electromagnetic radiation safety inspection of a millimeter-wave holographic imaging human body security inspection device by using the security inspection device described in Embodiment 1. The specific process is as follows:

[0036] In the first step, the staff places the security inspection device in the inspection channel of the device under inspection and starts the security inspection device.

[0037] In the second step, the control system obtains the surrounding space point cloud data through the 360-degree lidar sensor, obtains the spatial dimensions and physical space position of the inspection channel of the device under inspection based on the data sensed by the 360-degree lidar sensor, and obtains the physical space coordinate information of the center point of the inspection channel as the coordinate information of the reference point.

[0038] In the third step, based on the coordinate information of the reference point obtained in the second step, the control system controls the millimeter-wave antenna automatic movement module to start. The millimeter-wave antenna automatic movement module drives the millimeter-wave antenna to move to the position of the reference point, and then starts the millimeter-wave power density sample automatic acquisition device. The spectrum analyzer obtains the millimeter-wave power density data at the position where the millimeter-wave antenna is located based on the electromagnetic radiation signal emitted by the device under inspection collected by the millimeter-wave antenna.

[0039] Specifically, the controller drives the 1-axis sliding platform, the 2-axis sliding platform, and the 3-axis lifting platform to work, drives the millimeter-wave antenna to move to the position of the reference point, and drives the 4-axis rotating platform to work, driving the millimeter-wave antenna to rotate so that the transceiver port of the millimeter-wave antenna is oriented towards the millimeter-wave emission source of the device under inspection.

[0040] In the fourth step, the control system further controls the millimeter-wave antenna automatic movement module to drive the millimeter-wave antenna to move to each set measurement position, and obtains the millimeter-wave power density data corresponding to each measurement position through the spectrum analyzer.

[0041] Specifically, based on the reference point, the controller drives the 1-axis sliding platform and the 2-axis sliding platform to work, driving the millimeter-wave antenna to move to each set measurement position. At each measurement position, the controller drives the 4-axis rotating platform to work, driving the millimeter-wave antenna to rotate so that the transceiver port of the millimeter-wave antenna faces the millimeter-wave emission source of the device under test, and drives the 3-axis lifting platform to work to move the millimeter-wave antenna to different heights.

[0042] For the convenience of users to view, the control system can further summarize the millimeter-wave power density data at the reference point and all measurement positions and automatically generate a work record report for users to view.

[0043] For those skilled in the art, various corresponding changes and deformations can be given according to the above technical solutions and concepts, and all such changes and deformations should be included within the protection scope of the claims of the present invention.

Claims

1. Electromagnetic radiation safety inspection device for millimeter-wave holographic imaging human body security inspection equipment, characterized in that, It includes a 360-degree lidar sensor, a millimeter-wave antenna, a millimeter-wave antenna automatic moving mechanism, a millimeter-wave power density sample automatic acquisition device, and a control system; the 360-degree lidar sensor, the millimeter-wave antenna automatic moving mechanism, and the millimeter-wave power density sample automatic acquisition device are all communicatively connected to the control system, and the millimeter-wave antenna is communicatively connected to the millimeter-wave power density sample automatic acquisition device; The millimeter-wave antenna automatic moving mechanism includes a controller, a 1-axis sliding platform, a 2-axis sliding platform, a 3-axis lifting platform, a 4-axis rotating platform, and a millimeter-wave antenna bracket; the 360-degree lidar sensor and the millimeter-wave antenna are both installed on the millimeter-wave antenna bracket; the controller is respectively connected to the 1-axis sliding platform, the 2-axis sliding platform, the 3-axis lifting platform, and the 4-axis rotating platform in a controlled manner and is communicatively connected to the control system; The 2-axis sliding platform is arranged on the 3-axis lifting platform and is driven by the 3-axis lifting platform to move up and down in the vertical direction. The 4-axis rotating platform is arranged on the 2-axis sliding platform and is driven by the 2-axis sliding platform to move linearly in the horizontal direction. The 1-axis sliding platform is arranged on the 4-axis rotating platform and is driven by the 4-axis rotating platform to rotate horizontally. The millimeter-wave antenna bracket is fixed to the 1-axis sliding platform and is driven by the 1-axis sliding platform to move linearly in the horizontal direction; the orientation of the transceiver port of the millimeter-wave antenna is parallel to the horizontal movement direction of the slider of the 1-axis sliding platform; The millimeter-wave power density sample automatic acquisition module includes a spectrum analyzer, and the spectrum analyzer is communicatively connected to the millimeter-wave antenna and the control system respectively.

2. The security inspection device according to claim 1, characterized in that, Both the 1-axis sliding platform and the 2-axis sliding platform are composed of a horizontal movement driving mechanism, a horizontal slide, and a horizontal movement driver. The horizontal movement driver is respectively connected to the horizontal movement driving mechanism and the controller, and the horizontal movement driving mechanism is drivingly connected to the horizontal slide.

3. The security inspection device according to claim 1, characterized in that, The 3-axis lifting platform is composed of a lifting driving mechanism, a scissor lift structure, a base, a lifting platform, and a lifting driver. The lifting driver is respectively connected to the controller and the lifting driving mechanism. The scissor lift structure is arranged on the base, and the lifting driving mechanism is drivingly connected to the scissor lift structure and drives the scissor lift structure to move up and down; the lifting platform is fixed to the top of the scissor lift structure.

4. The security inspection device according to claim 1, wherein The 4-axis rotating platform is composed of a rotation driving mechanism, a rotating platform, and a rotation driver. The rotation driver is respectively connected to the rotation driving mechanism and the controller, and the rotation driving mechanism is drivingly connected to the rotating platform and drives the rotating platform to rotate horizontally.

5. A method for electromagnetic radiation safety inspection of a millimeter-wave holographic imaging human body security inspection device by using the security inspection device according to any one of claims 1-4, characterized in that, The specific process is as follows: First step, the staff places the security inspection device in the inspection channel of the device to be inspected and starts the security inspection device; Second step, the control system obtains the surrounding space point cloud data through the 360-degree lidar sensor, obtains the spatial dimensions and physical space positions of the inspection channel of the device to be inspected according to the data sensed by the 360-degree lidar sensor, and obtains the physical space coordinate information of the center point of the inspection channel as the coordinate information of the reference point; In the third step, based on the coordinate information of the reference point obtained in the second step, the control system controls the start of the millimeter-wave antenna automatic movement module. The millimeter-wave antenna automatic movement module drives the millimeter-wave antenna to move to the position of the reference point, and then starts the millimeter-wave power density sample automatic collection device. The spectrum analyzer obtains the millimeter-wave power density data at the position where the millimeter-wave antenna is located according to the electromagnetic radiation signal emitted by the device under test collected by the millimeter-wave antenna; In the fourth step, the control system further controls the millimeter-wave antenna automatic movement module to drive the millimeter-wave antenna to move to each set measurement position, and obtains the millimeter-wave power density data corresponding to each measurement position through the spectrum analyzer.

6. The method according to claim 5, characterized in that, The control system further summarizes the millimeter-wave power density data at the reference point and all measurement positions and automatically generates a work record report for the user to view.

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