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

Abstract

The utility model 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. According to the utility model, automation of electromagnetic radiation safety inspection of the millimeter wave holographic imaging human body safety inspection equipment can be realized, manual reference point measurement, manual millimeter wave antenna movement and manual frequency 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] This utility model relates to the field of security inspection equipment technology, specifically to an electromagnetic radiation security inspection device for millimeter-wave holographic imaging human body security inspection equipment. Background Technology

[0002] GB / T41482-2022, "Millimeter-Wave Holographic Imaging Human Body Security Inspection Equipment," defines equipment that uses millimeter-wave holographic imaging to inspect items carried on the human body as millimeter-wave holographic imaging human body security inspection equipment. Appendix D of GB / T41482-2022 specifies the operational methods for electromagnetic radiation safety inspection of millimeter-wave holographic imaging human body security inspection equipment. These methods are used to check whether the electromagnetic radiation of millimeter-wave holographic imaging human body security inspection equipment meets national standards.

[0003] The electromagnetic radiation safety inspection procedure for millimeter-wave holographic imaging human body security inspection equipment is as follows: First, the millimeter-wave antenna is mounted on a bracket, the height of which can be manually adjusted. Second, the center point of the inspection channel is manually measured and used as a reference point. The bracket is then manually moved to each measurement position, and the millimeter-wave antenna is adjusted to different heights. Third, a spectrum analyzer is manually operated to collect, analyze, and obtain the maximum power density sample value at the measurement position where the millimeter-wave antenna is located. Fourth, steps two and three are repeated until the maximum power density sample values ​​for all measurement positions are collected. The maximum power density sample value corresponding to each measurement position is then manually recorded, and a security inspection work record report is completed.

[0004] The current safety inspection process requires manual intervention in many aspects, resulting in long operation times and cumbersome procedures. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model aims to provide an electromagnetic radiation safety inspection device for millimeter-wave holographic imaging human body security inspection equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

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

[0008] The automated moving mechanism for the millimeter-wave antenna 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 mounted on the millimeter-wave antenna bracket; the controller controls and connects to the 1-axis sliding platform, the 2-axis sliding platform, the 3-axis lifting platform, and the 4-axis rotating platform respectively, and is communicatively connected to the control system;

[0009] The 2-axis sliding platform is mounted on the 3-axis lifting platform and driven by the 3-axis lifting platform to move vertically up and down. The 4-axis rotating platform is mounted on the 2-axis sliding platform and driven by the 2-axis sliding platform to move linearly horizontally. The 1-axis sliding platform is mounted on the 4-axis rotating platform and driven by the 4-axis rotating platform to rotate horizontally. The millimeter-wave antenna bracket is fixed to the 1-axis sliding platform and driven by the 1-axis sliding platform to move linearly horizontally. 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.

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

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

[0012] Furthermore, the 3-axis lifting platform consists of a lifting drive mechanism, a scissor lift structure, a base, a lifting platform, and a lifting driver. The lifting driver is connected to the controller and the lifting drive mechanism respectively. The scissor lift structure is located on the base. The lifting drive mechanism is 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.

[0013] Furthermore, the 4-axis rotary platform consists of a rotary drive mechanism, a rotary platform, and a rotary driver. The rotary driver is connected to the rotary drive mechanism and the controller, respectively. The rotary drive mechanism is connected to the rotary platform and drives the rotary platform to rotate horizontally.

[0014] The beneficial effects of this utility model are as follows: This utility model can realize the automation of electromagnetic radiation security inspection of millimeter-wave holographic imaging human security inspection equipment, without the need for manual measurement of reference points, manual movement of millimeter-wave antennas, or manual operation of spectrum analyzers, which can reduce a lot of manual intervention and improve security inspection efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the security inspection device described in Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the automated moving mechanism for the millimeter-wave antenna described in Embodiment 1 of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0018] Example 1

[0019] This embodiment provides an electromagnetic radiation security inspection device for millimeter-wave holographic imaging human body security inspection equipment, such as... Figure 1-2 As shown, 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.

[0020] The automated moving mechanism 3 for the millimeter-wave antenna 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 mounted on the millimeter-wave antenna bracket 35; the controller controls and connects to 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 respectively, and is communicatively connected to the control system 5.

[0021] The 2-axis sliding platform 32 is mounted on the 3-axis lifting platform 33 and driven by the 3-axis lifting platform 33 to move vertically up and down. The 4-axis rotating platform 34 is mounted on the 2-axis sliding platform 32 and driven by the 2-axis sliding platform 32 to move linearly horizontally. The 1-axis sliding platform 31 is mounted on the 4-axis rotating platform 34 and 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 driven by the 1-axis sliding platform 31 to move linearly horizontally. 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.

[0022] The millimeter-wave power density sample automatic acquisition module 4 includes a spectrum analyzer, which is communicatively connected to both the millimeter-wave antenna 2 and the control system 5. The spectrum analyzer receives the millimeter-wave electromagnetic radiation signal emitted by the device under test (DUT) from the millimeter-wave antenna and outputs millimeter-wave power density data at the location of the millimeter-wave antenna. The control system can adapt control commands according to the millimeter-wave frequency band of the DUT and the model of the spectrum analyzer.

[0023] In this embodiment, both the 1-axis sliding platform 31 and the 2-axis sliding platform 32 are composed of a horizontal movement stepper motor, a horizontal movement transmission mechanism, a horizontal slide, and a horizontal movement driver. The horizontal movement driver is connected to both the horizontal movement stepper motor and the controller. The horizontal movement stepper motor is connected to the horizontal slide via the horizontal movement transmission mechanism. During operation, the controller sends instructions to the horizontal movement driver according to the instructions from the control system. After receiving the instructions from the controller, the horizontal movement driver drives the horizontal movement stepper motor to work. The horizontal movement stepper motor drives the slider on the horizontal slide to move horizontally in a linear fashion through the horizontal movement transmission mechanism.

[0024] In this embodiment, the 3-axis lifting platform 33 comprises a lifting stepper motor, a lifting transmission mechanism, a scissor lift structure 331, a base 332, a lifting platform 333, and a lifting driver. The lifting driver is connected to both the controller and the lifting stepper motor. The scissor lift structure 331 is mounted on the base 332. The lifting stepper motor is connected to the scissor lift structure 331 via the lifting transmission mechanism and drives the scissor lift structure 331 to move up and down. The lifting platform 333 is fixed to the top of the scissor lift structure 331. The millimeter-wave antenna automated moving mechanism of this embodiment can be folded and unfolded using the scissor lift structure. When folded, the structure is compact and easy to store; when unfolded, the scissor arm has a large lifting space, and the lifting platform is stable. While maintaining the same workload intensity, the overall structure is lightweight, making it easy to carry and transport. During operation, the controller sends instructions to the lifting driver according to the control system's commands. Upon receiving the controller's instructions, the lifting driver drives the lifting stepper motor, which in turn drives the scissor lift structure to move up and down via the lifting transmission mechanism, thereby causing the lifting platform to move up and down.

[0025] In this embodiment, the 4-axis rotary platform comprises a rotary stepper motor, a rotary transmission mechanism, a rotary platform, and a rotary driver. The rotary driver is connected to both the rotary stepper motor and the controller. The rotary stepper motor is connected to the rotary platform via the rotary transmission mechanism and drives the rotary platform to rotate horizontally. During operation, the controller sends instructions to the rotary driver according to the instructions from the control system. Upon receiving the instructions from the controller, the rotary driver drives the rotary stepper motor to operate, and the rotary stepper motor drives the rotary platform to rotate horizontally via the rotary transmission mechanism.

[0026] More specifically, in this embodiment, the outer shell 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 outer shell of the horizontal slide of the 1-axis sliding platform 31 is fixed to the rotation plane of the rotating platform of the 4-axis rotating platform 34, and the millimeter-wave antenna bracket 35 is fixed to the slider of the horizontal slide of the 1-axis sliding platform 31.

[0027] During operation, the 1-axis sliding platform can move the millimeter-wave antenna back and forth along the direction of its transceiver port. The 2-axis sliding platform can move the millimeter-wave antenna to the sides. The 3-axis lifting platform can adjust the height of the millimeter-wave antenna. The 4-axis rotating platform can adjust the orientation of the 1-axis sliding platform and the millimeter-wave antenna. Thus, the orientation of the transceiver port of the millimeter-wave antenna can be adjusted according to the actual position of the millimeter-wave transmitter of the device under test, keeping it facing the millimeter-wave transmitter of the device under test.

[0028] Example 2

[0029] This embodiment provides a method for electromagnetic radiation security inspection of millimeter-wave holographic imaging human body security inspection equipment using the security inspection device described in Embodiment 1. The specific process is as follows:

[0030] The first step is for staff to place the security inspection device in the inspection channel of the equipment to be inspected and then activate the security inspection device.

[0031] The second step involves the control system acquiring point cloud data of the surrounding space through a 360-degree lidar sensor. Based on the data sensed by the 360-degree lidar sensor, the system obtains the spatial dimensions and physical location of the inspection channel of the device under inspection, and obtains the physical coordinate information of the center point of the inspection channel as the coordinate information of the reference point.

[0032] Third, based on the coordinate information of the reference point obtained in the second step, the control system controls the automatic movement module of the millimeter-wave antenna to start. The automatic movement module of the millimeter-wave antenna moves the millimeter-wave antenna to the position of the reference point, and then starts the automatic acquisition device of millimeter-wave power density sample. The spectrum analyzer obtains the millimeter-wave power density data at the location of the millimeter-wave antenna based on the electromagnetic radiation signal emitted by the device under test acquired by the millimeter-wave antenna.

[0033] Specifically, the controller drives the 1-axis sliding platform, the 2-axis sliding platform, and the 3-axis lifting platform to move the millimeter-wave antenna to the reference point, and drives the 4-axis rotating platform to rotate the millimeter-wave antenna so that the transceiver port of the millimeter-wave antenna faces the millimeter-wave transmission source of the device under test.

[0034] The fourth step involves the control system further controlling the automated moving module of the millimeter-wave antenna to move the millimeter-wave antenna to each set measurement position, and obtaining the millimeter-wave power density data corresponding to each measurement position through a spectrum analyzer.

[0035] Specifically, the controller uses a reference point as a benchmark to drive the 1-axis sliding platform and the 2-axis sliding platform to move the millimeter-wave antenna to various set measurement positions. At each measurement position, the controller drives the 4-axis rotating platform to rotate the millimeter-wave antenna so that the transceiver port of the millimeter-wave antenna faces the millimeter-wave transmission source of the device under test, and drives the 3-axis lifting platform to move the millimeter-wave antenna to different heights.

[0036] To facilitate user viewing, the control system can further summarize the millimeter-wave power density data of the reference points and all measurement locations to automatically generate a work record report for user viewing.

[0037] For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the protection scope of the claims of this utility model.

Claims

1. A millimeter wave holographic imaging human security screening apparatus electromagnetic radiation safety inspection device, characterized in that, The system includes a 360-degree lidar sensor, a millimeter-wave antenna, an automated moving mechanism for the millimeter-wave antenna, an automatic millimeter-wave power density sample acquisition device, and a control system. The 360-degree lidar sensor, the automated moving mechanism for the millimeter-wave antenna, and the automatic millimeter-wave power density sample acquisition device are all communicatively connected to the control system, and the millimeter-wave antenna is communicatively connected to the automatic millimeter-wave power density sample acquisition device. The automated moving mechanism for the millimeter-wave antenna 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 mounted on the millimeter-wave antenna bracket; the controller controls and connects to the 1-axis sliding platform, the 2-axis sliding platform, the 3-axis lifting platform, and the 4-axis rotating platform respectively, and is communicatively connected to the control system; The 2-axis sliding platform is mounted on the 3-axis lifting platform and driven by the 3-axis lifting platform to move vertically up and down. The 4-axis rotating platform is mounted on the 2-axis sliding platform and driven by the 2-axis sliding platform to move linearly horizontally. The 1-axis sliding platform is mounted on the 4-axis rotating platform and driven by the 4-axis rotating platform to rotate horizontally. The millimeter-wave antenna bracket is fixed to the 1-axis sliding platform and driven by the 1-axis sliding platform to move linearly horizontally. 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, which is communicatively connected to both the millimeter-wave antenna and the control system.

2. The security inspection apparatus according to claim 1, characterized by, Both the 1-axis sliding platform and the 2-axis sliding platform are composed of a horizontal movement drive mechanism, a horizontal slide table, and a horizontal movement driver. The horizontal movement driver is connected to the horizontal movement drive mechanism and the controller, respectively, and the horizontal movement drive mechanism is drivenly connected to the horizontal slide table.

3. The security inspection apparatus according to claim 1, characterized by, The 3-axis lifting platform consists of a lifting drive mechanism, a scissor lift structure, a base, a lifting platform, and a lifting driver. The lifting driver is connected to the controller and the lifting drive mechanism respectively. The scissor lift structure is located on the base. The lifting drive mechanism is 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 apparatus according to claim 1, characterized by The 4-axis rotary platform consists of a rotary drive mechanism, a rotary platform, and a rotary driver. The rotary driver is connected to the rotary drive mechanism and the controller, respectively. The rotary drive mechanism is connected to the rotary platform and drives the rotary platform to rotate horizontally.

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