Support structure of 3D scanning radar with motion angle calibration function

Abstract

The utility model discloses a support structure of a 3D scanning radar with a motion angle calibration function, which comprises two supports arranged oppositely, a rotatable rotating shaft arranged between the two supports, a radar body fixedly arranged on the rotating shaft, the two supports fixedly arranged on a rotatable rotating chassis, and the radar body fixedly arranged on the rotating chassis. And when the rotating chassis and / or the rotating shaft move, the radar body moves to perform all-directional scanning monitoring on the surface of the material. According to the support structure of the 3D scanning radar with the motion angle calibration device, the support is vertically installed on the rotary base plate capable of rotating, horizontal rotation and vertical overturning motion can be achieved, and therefore the scanning radar can be driven to synchronously and horizontally rotate and vertically rotate so that control over the scanning angle, direction and range can be conveniently carried out; the material surface monitoring device is convenient to use and install, relatively simple in structure, low in cost and convenient to popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of material scanning radar, in particular to a support structure of a 3D scanning radar with a motion angle calibration function. Background Art

[0002] 3D scanning radar has many advantages such as safety, high efficiency and environmental protection. Therefore, it has been widely promoted and applied in the three-dimensional scanning and monitoring process of materials. For the existing 3D scanning radar with internal mechanical motion devices, it is necessary to fully consider the simple and reliable motion structure to ensure the reliability and service life of the 3D scanning radar. In addition, long-term movement requires regular or timely angle calibration and calibration of long-term accumulated angle deviation to ensure measurement accuracy. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies and defects of the prior art and to provide a support structure of a 3D scanning radar with a motion angle calibration function.

[0004] The support structure of a 3D scanning radar with a motion angle calibration function includes two relatively arranged supports, a rotatable rotating shaft is arranged between the two supports, a radar body is fixedly arranged on the rotating shaft, and the two supports are fixedly arranged on a rotatable rotating chassis. When the rotating chassis and / or the rotating shaft moves, the radar body moves to perform all-round scanning and monitoring of the material surface.

[0005] The axis of the rotating shaft is parallel to the rotating chassis. When the rotating shaft rotates, the radar body and the rotating shaft perform synchronous mechanical movement and rotation in a first direction. The bracket is perpendicular to the rotating chassis. When the rotating chassis moves, the rotating chassis, the bracket and the radar body perform synchronous mechanical movement in a second direction.

[0006] Wherein, the bracket is an L-shaped bracket, a wider end of the L-shaped bracket is fixedly connected to the rotating chassis, and the other end of the L-shaped bracket is used to connect to the rotating shaft.

[0007] Wherein, a hollow structure is formed on the bracket.

[0008] Wherein, the bracket is made of plastic material.

[0009] Wherein, the bracket is integrally injection molded.

[0010] Wherein, the bracket is a thin plate structure.

[0011] Wherein, the bracket and the rotating chassis are integrally formed by injection molding.

[0012] Among them, a first synchronous pulley is installed at one end of the rotating shaft close to the first bracket, and the first synchronous pulley is connected to the second synchronous pulley on the driving shaft of the first drive motor through a first synchronous belt. The first drive motor is installed on the rotating chassis or the first bracket, so that the first drive motor drives the rotating shaft to perform synchronous mechanical movement through the first synchronous pulley, the first synchronous belt, and the second synchronous pulley.

[0013] A first rotating joint is provided at the other end of the rotating shaft close to the second bracket, and the first rotating joint is fixedly mounted on the second bracket. The first circuit board on the radar body is connected to the rotor of the first rotating joint through a first cable, and the stator of the first rotating joint is connected to the second circuit board through a second cable, so that when the radar body moves in the pitch direction, the communication and electrical cables between the first circuit board and the second circuit board will not be knotted or entangled, and the second circuit board is fixedly mounted on the side of the second bracket.

[0014] Wherein, at least one first angle sensor is disposed at one end of the second circuit board close to the rotating shaft, for detecting and calibrating the movement angle of the rotating shaft.

[0015] Among them, the first angle sensor includes a first photoelectric converter, and a first baffle is fixedly arranged on a side of the rotating shaft close to the first angle sensor. The first baffle and the rotating shaft perform synchronous mechanical movement, so that when the first baffle passes through the middle detection area of ​​the first photoelectric converter, the first photoelectric converter obtains the movement angle of the rotating shaft, and compares, checks and calibrates the angle information obtained by the first drive motor to ensure the angle accuracy in the movement direction of the rotating shaft.

[0016] Among them, the radar body includes an antenna structure, and the first circuit board is arranged at one end of the antenna structure, which is used to generate a transmission signal and send it through the antenna structure. After the transmission signal reaches the surface of the material, it is reflected to form an echo signal, and the echo signal is received by the antenna structure and transmitted to the first circuit board for analysis and processing to obtain the position information.

[0017] Wherein, a second driving motor is arranged on the rotating chassis, and a third synchronous pulley on the output shaft of the second driving motor is drivingly connected to a fourth synchronous pulley fixed at the center of the rotating chassis through a second synchronous belt.

[0018] Wherein, a support plate is arranged below the rotating chassis, the support plate has no mechanical movement, and the fourth synchronous pulley is arranged on the support plate.

[0019] A second rotating joint is arranged on the rotating chassis, and the second rotating joint is arranged vertically on the rotating chassis inside or outside the fourth synchronous pulley. A through hole is arranged on the rotating chassis, at least for the cable to pass through, and the electrical and communication between the second circuit board and the third circuit board are realized through the second rotating joint, wherein the second circuit board is arranged on the side of the second bracket, and the third circuit board is arranged below the rotating chassis, and has no relative movement with the support plate.

[0020] Among them, the rotor end of the second rotating joint is away from the support plate, the second circuit is connected to the rotor end of the second rotating joint through a third cable, and the stator end of the second rotating joint is connected to the third circuit board through a fourth cable, so that when the rotating chassis moves, the communication and electrical cables between the second circuit and the third circuit board will not be knotted, entangled or bent.

[0021] Wherein, at least one second angle sensor is fixedly arranged at the bottom end of the rotating chassis for checking and calibrating the movement angle of the rotating chassis.

[0022] Among them, the second angle sensor includes a second photoelectric converter, and a second baffle is fixedly arranged on the top of the support plate. The photoelectric converter and the rotating chassis perform synchronous mechanical movement, so that when the second baffle passes through the middle detection area of ​​the second photoelectric converter, the second photoelectric converter obtains the movement angle of the rotating chassis, and compares and checks and calibrates the angle information obtained by the second drive motor to ensure the angle accuracy in the movement direction of the rotating chassis.

[0023] The support structure of the 3D scanning radar with the motion angle calibration function of the utility model is achieved by vertically mounting two supports on a rotatable rotating chassis, arranging a rotatable rotating shaft between the two supports, and fixing a radar body on the rotating shaft. When the rotating chassis and / or the rotating shaft moves, the radar body moves to perform all-round scanning and monitoring of the material surface. A first rotating joint is fixedly arranged on the support, and a second rotating joint is arranged at the lower end of the rotating chassis, so that communication and electrical connection between the radar body and the external circuit board are achieved through the first rotating joint and the second rotating joint, so that the movement amplitude of the cable during movement is reduced, the motion structure is simple, and the reliability and service life of the 3D scanning radar are improved. In addition, by arranging the first angle sensor and the second angle sensor, the motion angles in the first direction and the second direction are checked and calibrated to ensure angle accuracy and provide detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is an axonometric diagram (without the rotation axis) of the support structure of the 3D scanning radar with a motion angle calibration device of the utility model.

[0025] Figure 2 This is a partial view of the support structure of the 3D scanning radar with a motion angle calibration device of the utility model (without the motion angle calibration position).

[0026] Figure 3 It is a side view of the support structure of the 3D scanning radar with motion angle calibration device of the utility model.

[0027] Figure 4 It is another axonometric diagram (without the rotation axis) of the support structure of the 3D scanning radar with the motion angle calibration device of the utility model. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] like Figure 1 and Figure 2 , Figure 3 , Figure 4 As shown, a support structure of a 3D scanning radar with a motion angle calibration device in an embodiment of the utility model includes two supports 1 that are relatively set and vertically arranged, a rotating shaft 3 is arranged between the two supports 1, and the rotating shaft 3 is used to arrange a radar body 4. The two supports 1 are arranged on a horizontally arranged rotating chassis 2. When the rotating chassis and / or the rotating shaft moves, the radar body moves to perform all-round scanning and monitoring of the material surface.

[0030] Among them, the axis of the rotating shaft 3 is parallel to the rotating chassis 2. When the rotating shaft 3 rotates, the radar body 4 and the rotating shaft 3 perform synchronous mechanical movement and rotation in the first direction; the bracket 1 is perpendicular to the rotating chassis 2. When the rotating chassis 2 moves, the rotating chassis 2, the bracket 1, and the radar body 4 perform synchronous mechanical movement in the second direction.

[0031] In some embodiments, the bracket 1 is an L-shaped bracket, the wider end of the L-shaped bracket is fixedly connected to the rotating chassis, and the other end of the L-shaped bracket is used to connect to the rotating shaft. Preferably, two brackets are arranged on the rotating chassis 2 opposite to each other and arranged on both sides of the center of the rotating chassis 2, and can be detachably connected by the bolts to facilitate installation with the rotating chassis.

[0032] Among them, a hollow structure 22 can be formed on the bracket 1 to reduce the weight of the bracket and thus reduce the weight of the scanning radar. The hollow structure can be any available shape, and the hollow structures of the two brackets 1 can be consistent and symmetrical, or inconsistent and asymmetrical, as long as they do not affect the support function and use function of the support.

[0033] In some embodiments, the bracket 1 is made of plastic material and can be integrally injection molded, that is, the whole is plastic, and a certain amount of glass fiber can be filled in the plastic and then injection molded to increase the performance of the bracket 1. The bracket 1 is a thin plate structure. The bracket 1 can be integrally injection molded with the rotating chassis 2, or connected together after separate injection molding. The structure with shaft holes on the bracket 1 on both sides is used to place the rotating shaft 3 that drives the radar body 4 to rotate or turn.

[0034] In some embodiments, the rotation axis 3 is close to the first bracket ( Figure 2 The right bracket shown in the figure) Figure 2 A first synchronous pulley 9 is installed on the right side end shown in the figure, and the first synchronous pulley 9 is connected to a second synchronous pulley 7 on the driving shaft of a first driving motor 8 arranged on the first bracket through a first synchronous belt 6. By using the first synchronous pulley 9 and the first synchronous belt 6, the rotating shaft 3 can be controlled to rotate synchronously under the action of the first driving motor, so as to control the radar body 4 to rotate synchronously with the rotating shaft 3.

[0035] Among them, the first drive motor 8 can be arranged on the first bracket or on the rotating chassis 2, and its output shaft extends out of the hole of the first bracket, and is connected to the first synchronous belt 9 on the outside of the first bracket through the first synchronous pulley 9 on it, and the second synchronous pulley 9 is arranged on the outside of the first bracket, above the first synchronous pulley 9.

[0036] In some embodiments, the other end of the rotating shaft 3 ( Figure 2 The left end shown in FIG. 1 is connected to the first rotating joint 5, and the first rotating joint 5 is mounted on the second bracket (located at Figure 1The bracket 1 on the left is the second bracket), and the first cable 16 connected to the first circuit board 15 of the radar body 4 is communicated with the second cable 17 connected to the second circuit board 18 controlling the radar body 4 through the first rotating joint 5, that is, the first circuit board 15 is connected to the first cable 16, and the second cable 17 is connected to the second circuit board 18. The first cable 16 and the second cable 17 are respectively connected to the stator and the rotor of the first rotating joint 5 to realize the transmission of communication signals and power signals. The second bracket is arranged opposite to the first bracket. Through the first rotating joint 5, when the radar body 4 moves, the communication and electrical cables between the first circuit board 15 and the second circuit board 18 will not be knotted, entangled or severely bent, so that the movement amplitude of the cable is reduced during movement, ensuring that the cables between the connecting circuit boards of the radar body 4 are not interfered by the rotation, ensuring the effective transmission of control, measurement signals and power signals, and the motion structure is simple while improving the reliability and service life of the 3D scanning radar.

[0037] Specifically, the first circuit board 15 on the radar body 4 is connected to the rotor of the first rotary joint 5 through the first cable 16, and the stator of the first rotary joint 5 is connected to the second circuit board 18 through the second cable 17. In this way, when the radar body 4 moves, the communication and electrical cables between the first circuit board 15 and the second circuit board 18 will not be knotted, entangled or severely bent, so that the movement amplitude of the cables during movement is reduced, ensuring that the cables between the connecting circuit boards of the radar body 4 are not disturbed by rotation.

[0038] Among them, the radar body 4 includes an antenna structure, and the first circuit board 15 is arranged at one end of the antenna structure, which is used to generate a transmitting signal and send it through the antenna structure. After the transmitting signal reaches the surface of the material, it is reflected to form an echo signal, and the echo signal is received by the antenna structure and transmitted to the first circuit board for analysis and processing to obtain the position information.

[0039] In some embodiments, at least one first angle sensor is provided at one end of the second circuit board 18 close to the rotating shaft 3 for checking and calibrating the movement angle of the rotating shaft 3. Preferably, there are two first angle sensors arranged relative to each other to detect the forward and reverse rotation movement angles of the rotating shaft 3.

[0040] Among them, the first angle sensor includes a first photoelectric converter 23, and a first baffle 24 is fixedly arranged on a side of the rotating shaft close to the first photoelectric converter. The first baffle 24 performs synchronous mechanical movement with the rotating shaft 3, so that when the first baffle 24 passes through the middle detection area of ​​the first photoelectric converter 23, the first photoelectric converter 23 obtains the movement angle of the rotating shaft 3, and compares, checks and calibrates the angle information obtained by the first drive motor 8 to ensure the angle accuracy in the movement direction of the rotating shaft 3.

[0041] In some embodiments, a second rotating joint 10 is provided on the rotating chassis 2, and the second circuit board 18 is connected to the third circuit board 20 through the second rotating joint 10. The second rotating joint 10 is connected to the second circuit board 18 through a third cable, and is connected to the third circuit board 20 through a fourth cable 19, wherein the second circuit board 18 is also used to control the rotation movement of the first drive motor 8.

[0042] In some embodiments, a second driving motor 11 is arranged on the rotating chassis 2 for driving the rotating chassis 2 to rotate, and the second circuit board 18 is also used to control the rotation of the second driving motor 11 .

[0043] In some embodiments, the third synchronous pulley 12 on the output shaft of the second drive motor 11 is connected to the fourth synchronous pulley 14 fixed at the center of the rotating chassis 2 through the second synchronous belt 13. The third synchronous pulley 12 on the output shaft of the second drive motor 11 is connected to the fourth synchronous pulley 14 fixed at the center of the rotating chassis 2 through the second synchronous belt 13, so that the rotating chassis 2 and the second drive motor 11 can be controlled to rotate synchronously.

[0044] In some embodiments, a support plate 21 is arranged at the bottom of the rotating chassis 2, the fourth synchronous pulley 14 is arranged on the support plate 21, and a second rotating joint 10 is arranged inside the fourth synchronous pulley 14. When the second drive motor 11 rotates, the rotating chassis 2 rotates synchronously with the second drive motor 11, and through the setting of the second rotating joint 10, when the rotating chassis 2 moves, the communication and electrical cables between the second circuit and the third circuit board will not be knotted, entangled or severely bent, so that the movement amplitude of the cables is reduced during movement, thereby ensuring that the cables between the connecting circuit boards of the radar body 4 are not disturbed by the rotation, ensuring the effective transmission of control, measurement signals and power signals, and simplifying the motion structure while improving the reliability and service life of the 3D scanning radar.

[0045] In some embodiments, at least one second angle sensor is fixedly provided at the bottom end of the rotating chassis 2 for checking and calibrating the movement angle of the rotating chassis. Preferably, there are two second angle sensors 25 arranged relatively to the bottom surface of the rotating chassis.

[0046] Among them, the second angle sensor includes a second photoelectric converter 25, and a second baffle 26 is fixedly arranged on the top of the support plate 21. The second photoelectric converter 25 performs synchronous mechanical movement with the rotating chassis 2, so that when the second baffle 26 passes through the middle detection area of ​​the second photoelectric converter 25, the second photoelectric converter 25 obtains the movement angle of the rotating chassis 2, and compares and checks and calibrates the angle information obtained by the second drive motor 11 to ensure the angle accuracy of the rotating chassis 2 in the movement direction.

[0047] In the present application, the third circuit board 20 is used to receive external power supply and convert it into the working voltage required by other circuit boards, and transmit the data detected by the radar body 4 to the outside; the second circuit board 18 is a main control circuit, on which a main control chip, such as ARM, CPU, etc., is provided, which is used to control the first circuit board 15 to transmit signals, and receive the reflected signals transmitted by the first circuit, calculate the position of each object level, and also control the first drive motor 8 and the second drive motor 11 to work, and obtain the real-time angle information of the radar body 4. In addition, it is also used to control the work of the first angle sensor and the second angle sensor, and receive the detection signals of the first angle sensor and the second angle sensor to obtain the actual angles of the rotating shaft 3 and the rotating chassis 2, wherein the first circuit board 15 is installed on the radar body 4, receives the control signal of the second circuit board 18, generates a transmitting signal and receives a reflected signal.

[0048] In the present application, the radar body 4 can be any scanning radar for material monitoring available in the prior art, including microwave radar, laser radar, etc. The first rotary joint 5 and the second rotary joint 10 have the same or different structures, and can be implemented by using existing rotary slip rings, etc.

[0049] The support structure of the 3D scanning radar with the motion angle calibration function of the utility model is vertically installed on a rotatable rotating chassis through the support, and a rotatable rotating shaft is arranged between the two supports. A radar body is fixedly arranged on the rotating shaft, so that when the rotating chassis and / or the rotating shaft moves, the radar body moves to perform all-round scanning and monitoring of the material surface. A first rotating joint is fixedly arranged through the support, and a second rotating joint is arranged at the lower end of the rotating chassis, so that communication and electrical connection between the radar body and the external circuit board are realized through the first rotating joint and the second rotating joint, so that the movement amplitude of the cable during movement is reduced, the motion structure is simple, and the reliability and service life of the 3D scanning radar are improved. In addition, by arranging the first angle sensor and the second angle sensor, the movement angles in the first direction and the second direction are checked and calibrated to ensure angle accuracy and provide detection accuracy.

[0050] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A support structure of a 3D scanning radar with a motion angle calibration function, characterized in that: It comprises two brackets arranged opposite to each other, a rotatable rotating shaft is arranged between the two brackets, a radar body is fixedly arranged on the rotating shaft, and the two brackets are fixedly arranged on a rotatable rotating chassis. When the rotating chassis and / or the rotating shaft moves, the radar body moves to perform all-round scanning and monitoring of the material surface.

2. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1 is characterized in that: The axis of the rotating shaft is parallel to the rotating chassis. When the rotating shaft rotates, the radar body and the rotating shaft perform synchronous mechanical movement and rotation in a first direction; the bracket is perpendicular to the rotating chassis. When the rotating chassis moves, the rotating chassis, the bracket and the radar body perform synchronous mechanical movement in a second direction.

3. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: The bracket is an L-shaped bracket, a wider end of the L-shaped bracket is fixedly connected to the rotating chassis, and the other end of the L-shaped bracket is used to connect to the rotating shaft.

4. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: A hollow structure is formed on the bracket.

5. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: The bracket is made of plastic.

6. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: The bracket is integrally injection-molded.

7. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: The support is a thin plate structure.

8. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: The bracket and the rotating chassis are integrally formed by injection molding.

9. The support structure of the 3D scanning radar with motion angle calibration function according to claim 1, characterized in that: A first synchronous pulley is installed at one end of the rotating shaft close to the first bracket, and the first synchronous pulley is connected to a second synchronous pulley on the driving shaft of the first drive motor through a first synchronous belt. The first drive motor is installed on the rotating chassis or the first bracket, so that the first drive motor drives the rotating shaft to perform synchronous mechanical movement via the first synchronous pulley, the first synchronous belt, and the second synchronous pulley.

10. The support structure of the 3D scanning radar with motion angle calibration function according to claim 9, characterized in that: A first rotating joint is provided at the other end of the rotating shaft close to the second bracket, and the first rotating joint is fixedly mounted on the second bracket. The first circuit board on the radar body is connected to the rotor of the first rotating joint through a first cable, and the stator of the first rotating joint is connected to the second circuit board through a second cable, so that when the radar body moves in the pitch direction, the communication and electrical cables between the first circuit board and the second circuit board will not be knotted or entangled, wherein the second circuit board is fixedly mounted on the side of the second bracket.

11. The support structure of the 3D scanning radar with motion angle calibration function according to claim 10, characterized in that: At least one first angle sensor is disposed at one end of the second circuit board close to the rotating shaft, for detecting and calibrating the movement angle of the rotating shaft.

12. The support structure of the 3D scanning radar with motion angle calibration function according to claim 11, characterized in that: The first angle sensor includes a first photoelectric converter, and a first baffle is fixedly arranged on a side of the rotating shaft close to the first photoelectric converter. The first baffle and the rotating shaft perform synchronous mechanical movement, so that when the first baffle passes through a middle detection area of ​​the first photoelectric converter, the first photoelectric converter obtains the movement angle of the rotating shaft, and compares, checks and calibrates the angle information obtained by the first drive motor to ensure the angle accuracy in the movement direction of the rotating shaft.

13. The support structure of the 3D scanning radar with motion angle calibration function according to claim 10, characterized in that: The radar body includes an antenna structure. The first circuit board is arranged at one end of the antenna structure and is used to generate a transmission signal and send it through the antenna structure. The transmission signal is reflected after reaching the surface of the material to form an echo signal. The echo signal is received by the antenna structure and transmitted to the first circuit board for analysis and processing to obtain the position information.

14. The support structure of the 3D scanning radar with motion angle calibration function according to claim 10, characterized in that: A second drive motor is arranged on the rotating chassis, and a third synchronous pulley on the output shaft of the second drive motor is drivingly connected to a fourth synchronous pulley fixed at the center of the rotating chassis through a second synchronous belt.

15. The support structure of the 3D scanning radar with motion angle calibration function according to claim 14, characterized in that: A support plate is arranged below the rotating chassis, the support plate has no mechanical movement, and the fourth synchronous pulley is arranged on the support plate.

16. The support structure of the 3D scanning radar with motion angle calibration function according to claim 15, characterized in that: A second rotating joint is arranged on the rotating chassis, and the second rotating joint is arranged perpendicular to the rotating chassis inside or outside the fourth synchronous pulley. The rotating chassis is provided with a through hole, at least for the cable to pass through, and the electrical and communication between the second circuit board and the third circuit board are realized through the second rotating joint, wherein the second circuit board is arranged on the side of the second bracket, and the third circuit board is arranged below the rotating chassis, and has no relative movement with the support plate.

17. The support structure of the 3D scanning radar with motion angle calibration function according to claim 16, characterized in that: The rotor end of the second rotating joint is away from the supporting plate, the second circuit is connected to the rotor end of the second rotating joint through a third cable, and the stator end of the second rotating joint is connected to the third circuit board through a fourth cable, so that when the rotating chassis moves, the communication and electrical cables between the second circuit and the third circuit board will not be knotted or entangled.

18. The support structure of the 3D scanning radar with motion angle calibration function according to claim 17, characterized in that: At least one second angle sensor is fixedly arranged at the bottom end of the rotating chassis for checking and calibrating the movement angle of the rotating chassis.

19. The support structure of the 3D scanning radar with motion angle calibration function according to claim 18, characterized in that: The second angle sensor includes a second photoelectric converter. A second baffle is fixedly arranged on the top of the support plate. The second photoelectric converter and the rotating chassis perform synchronous mechanical movement, so that when the second baffle passes through the middle detection area of ​​the second photoelectric converter, the second photoelectric converter obtains the movement angle of the rotating chassis, and compares and checks and calibrates the angle information obtained by the second drive motor to ensure the angle accuracy in the movement direction of the rotating chassis.

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