An anti-interference vehicle-mounted radar

Abstract

The present invention relates to an anti-interference vehicle-mounted radar applied in the field of laser radar. When foreign objects such as insects are stuck on the surface of the laser radar, the movement trajectory of the multi-purpose block covers the entire protective cover. When the multi-purpose block does not overlap with the foreign object during the movement, the capture intensity of the laser radar is further reduced, which is recorded as b. When the multi-purpose block moves to overlap with the foreign object, the capture intensity of the laser radar is improved, which is recorded as c, and c≥a, c<b. When c≥a, c<b, the coordinates of the multi-purpose block at this time are marked to complete the positioning of the foreign object. The multi-purpose block absorbs cleaning liquid and moves to the foreign object for cleaning. Through the above-mentioned arrangement, the foreign object on the surface of the laser radar can be located, and the foreign object can be cleaned specifically after the positioning is completed, which has little impact on the laser radar and is more suitable for use during driving. At the same time, during the cleaning process, no secondary pollution is caused, which greatly improves the anti-interference effect of the vehicle-mounted radar.

Description

Technical Field

[0001] The present invention relates to an anti-interference vehicle-mounted radar, in particular to an anti-interference vehicle-mounted radar applied in the field of laser radar. Background Art

[0002] LiDAR is a type of vehicle-mounted radar. It is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of a target. Its working principle is to transmit a detection signal to the target, and then compare the received signal reflected from the target with the transmitted signal to obtain relevant information about the target.

[0003] In the summer when there are more mosquitoes, cars will hit mosquitoes when driving at high speed. When mosquitoes collide with the laser radar, they will attach to the surface of the laser radar, causing the capture intensity of the laser radar to decrease and interfere with the operation of the laser radar. The current common solution is to spray cleaning fluid on the surface of the laser radar.

[0004] This cleaning method can only clean shallowly adhered foreign matter, and the effect of cleaning mosquitoes is not ideal. The sprayed cleaning fluid will cause diffuse reflection of the light beam, which is not suitable for use during driving. At the same time, the cleaning fluid will splash and cause secondary pollution, so further improvement is needed. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the method of spraying cleaning fluid can only clean shallowly adhered foreign matter, and the effect of cleaning mosquitoes is not ideal. In addition, the sprayed cleaning fluid will cause diffuse reflection of the light beam, which is not suitable for use during driving. At the same time, the cleaning fluid will splash and cause secondary pollution.

[0006] In order to solve the above problems, the present invention provides an anti-interference vehicle-mounted radar, including a shell and a fixed-point cleaning program, a laser radar is installed inside the shell, a protective cover is installed at one end of the laser radar, a window is opened at one end of the shell close to the protective cover, a multi-purpose block is arranged on one side of the protective cover, and a fiber layer is fixedly connected to the surface of the multi-purpose block;

[0007] The method of using the fixed-point cleaning program includes the following steps:

[0008] S1, program start: when the capture intensity of the laser radar decreases within 10% within 0-1 second, the fixed-point sweeping program starts, and the capture intensity of the laser radar at this time is recorded as a;

[0009] S2, scanning: the multi-purpose block moves from one end of the protective cover to the other end, and after each movement of the multi-purpose block, it moves upward once, and then the multi-purpose block passes through the protective cover again until the movement track of the multi-purpose block covers the entire protective cover;

[0010] S3, positioning: when the multi-purpose block is moving and does not overlap with the foreign object, the capture intensity of the laser radar is further reduced, recorded as b. When the multi-purpose block moves to overlap with the foreign object, the capture intensity of the laser radar is increased, recorded as c, and c≥a, c>b. When c≥a, c>b, mark the coordinates of the multi-purpose block at this time to complete the positioning of the foreign object.

[0011] S4. Cleaning: Use a multi-purpose block to absorb the cleaning liquid and move it to the foreign object for cleaning.

[0012] As a further improvement of the present application, the cleaning method of the multi-purpose block in S4 is as follows: the multi-purpose block absorbs the cleaning liquid and removes excess moisture, moves to the location of the foreign matter, and then adheres closely to the protective cover and moves repeatedly to wipe off the foreign matter.

[0013] As a further improvement of the present application, the bottom end of the shell is fixedly connected to an electric slide rail, one end of the electric slide rail is slidably connected to a shift frame, and a screw rod and two guide rods are rotatably connected between the top and bottom ends of the shift frame.

[0014] As a further improvement of the present application, a clamping frame is provided on one side of the displacement frame, the clamping frame is sleeved on the outside of the laser radar, the guide rod passes through the clamping frame and is slidably connected thereto, and the screw rod passes through the clamping frame and is threadedly connected thereto.

[0015] As another improvement of the present application, the four corners of the clamping frame are rotatably connected to electric transmission wheels, a rotating rope is rotatably connected between the four electric transmission wheels, both ends of the rotating rope are fixedly connected to the multi-purpose block, and the rotating rope sleeve is arranged on the outside of the laser radar.

[0016] As another improved supplement of the present application, one end of the clamping frame is rotatably connected to two electric cleaning columns, the top of the outer shell is fixedly connected to a liquid storage tank, one end of the liquid storage tank is fixedly connected to an electric nozzle, and one end of the electric nozzle is located on the upper side of the electric cleaning column.

[0017] As another improved supplement of the present application, one end of the clamping frame close to the electric cleaning column is rotatably connected to two electric clamping columns.

[0018] To sum up, when foreign objects such as insects are stuck on the surface of the laser radar, the movement trajectory of the multi-purpose block covers the entire protective cover. When the multi-purpose block does not overlap with the foreign object during the movement, the capture intensity of the laser radar is further reduced, recorded as b. When the multi-purpose block moves to overlap with the foreign object, the capture intensity of the laser radar is improved, recorded as c, and c≥a, c>b. When c≥a, c>b, mark the coordinates of the multi-purpose block at this time to complete the positioning of the foreign object. The multi-purpose block absorbs the cleaning liquid and moves to the foreign object for cleaning. Through the above settings, the foreign objects on the surface of the laser radar can be located, and the foreign objects can be cleaned specifically after the positioning is completed, which has little impact on the laser radar and is more suitable for use during driving. At the same time, during the cleaning process, no secondary pollution will be caused, which greatly improves the anti-interference effect of the vehicle-mounted radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a method flow chart of the fixed-point cleaning program in the first embodiment of the present application;

[0020] Figure 2 This is a three-dimensional diagram of the outer shell in the first and second embodiments of the present application;

[0021] Figure 3 It is a cross-sectional stereoscopic view of the outer shell in the first and second embodiments of the present application;

[0022] Figure 4 The three-dimensional image of the electric slide rail in the first and second embodiments of the present application;

[0023] Figure 5 It is a top view of the multi-purpose block in the first and second embodiments of the present application;

[0024] Figure 6 This is a state diagram when the multi-purpose block moves to one side of the protective cover in the first and second embodiments of the present application;

[0025] Figure 7 This is a three-dimensional diagram of the electric cleaning column in the first and second embodiments of the present application.

[0026] Description of the numbers in the figure:

[0027] 1. Shell; 101. Window; 2. Laser radar; 201. Protective cover; 3. Electric slide rail; 4. Shift frame; 5. Guide rod; 6. Screw rod; 7. Clamp frame; 8. Electric transmission wheel; 9. Rotating rope; 10. Multi-purpose block; 1001. Fiber layer; 11. Electric cleaning column; 12. Electric clamping column; 13. Liquid storage tank; 1301. Electric nozzle. DETAILED DESCRIPTION

[0028] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0029] The first implementation method:

[0030] Figure 1-7 An anti-interference vehicle-mounted radar is shown, comprising a housing 1 and a fixed-point cleaning program, a laser radar 2 is installed inside the housing 1, a protective cover 201 is installed at one end of the laser radar 2, a window 101 is opened at one end of the housing 1 close to the protective cover 201, a multi-purpose block 10 is arranged on one side of the protective cover 201, and a fiber layer 1001 is fixedly connected to the surface of the multi-purpose block 10;

[0031] The method of using the fixed-point cleaning program includes the following steps:

[0032] S1, program start: when the capture intensity of the laser radar 2 decreases within 10% within 0-1 seconds, the fixed-point sweeping program starts, and the capture intensity of the laser radar 2 at this time is recorded as a;

[0033] S2, scanning: the multi-purpose block 10 moves from one end to the other end of the protective cover 201, and after each movement, the multi-purpose block 10 moves upward once, and then the multi-purpose block 10 passes through the protective cover 201 again, until the movement track of the multi-purpose block 10 covers the entire protective cover 201;

[0034] S3, positioning: when the multi-purpose block 10 is moving and does not overlap with the foreign object, the capture intensity of the laser radar 2 is further reduced, which is recorded as b. When the multi-purpose block 10 moves to overlap with the foreign object, the capture intensity of the laser radar 2 is increased, which is recorded as c, and c≥a, c>b. When c≥a, c>b, the coordinates of the multi-purpose block 10 at this time are marked to complete the positioning of the foreign object.

[0035] S4, cleaning: the multi-purpose block 10 absorbs the cleaning liquid and moves to the foreign matter for cleaning.

[0036] The cleaning method of the multi-purpose block 10 in S4 is as follows: the multi-purpose block 10 absorbs the cleaning liquid and removes excess water, moves to the location of the foreign matter, and then closely adheres to the protective cover 201 and moves repeatedly to wipe off the foreign matter.

[0037] Through the above settings, foreign objects on the surface of the laser radar can be located, and after the positioning is completed, the foreign objects can be cleaned specifically, which has little impact on the laser radar and is more suitable for use during driving. At the same time, during the cleaning process, no secondary pollution will be caused, which greatly improves the anti-interference effect of the vehicle-mounted radar.

[0038] The second implementation method:

[0039] Figure 2-7An anti-interference vehicle-mounted radar is shown. Different from the first embodiment, an electric slide rail 3 is fixedly connected to the bottom end of the housing 1, and a shift frame 4 is slidably connected to one end of the electric slide rail 3. A screw rod 6 and two guide rods 5 are rotatably connected between the top and bottom ends of the shift frame 4. A clamping frame 7 is arranged on one side of the shift frame 4. The clamping frame 7 is sleeved on the outside of the laser radar 2. The guide rod 5 penetrates the clamping frame 7 and is slidably connected thereto. The screw rod 6 penetrates the clamping frame 7 and is threadedly connected thereto. The four corners of the clamping frame 7 are rotatably connected to electric transmission wheels 8, and a rotating shaft 8 is rotatably connected between the four electric transmission wheels 8. Rope 9, both ends of the rotating rope 9 are fixedly connected to the multi-purpose block 10, and the rotating rope 9 is sleeved on the outside of the laser radar 2; through the above arrangement, when the screw rod 6 rotates, it can drive the clamping frame 7 to move up and down, and when the electric transmission wheel 8 rotates, it can drive the multi-purpose block 10 to cross the protective cover 201 through the rotating rope 9, so that the movement trajectory of the multi-purpose block 10 can cover the protective cover 201, and when the multi-purpose block 10 is cleaned, the shift frame 4 moves in the direction away from the laser radar 2, so that the multi-purpose block 10 can be tightly attached to the protective cover 201. At this time, the frequent forward and reverse rotation of the electric transmission wheel 8 can make the multi-purpose block 10 wipe off foreign matter.

[0040] One end of the clamping frame 7 is rotatably connected to two electric cleaning columns 11, and the top of the outer shell 1 is fixedly connected to a liquid storage tank 13, one end of the liquid storage tank 13 is fixedly connected to an electric nozzle 1301, and one end of the electric nozzle 1301 is located on the upper side of the electric cleaning column 11; when the multi-purpose block 10 absorbs the cleaning liquid, the rotating rope 9 drives the multi-purpose block 10 to move between the two electric cleaning columns 11, and then the electric nozzle 1301 sprays out the cleaning liquid and cooperates with the electric cleaning columns 11 to clean the multi-purpose block 10, and makes the multi-purpose block 10 absorb the cleaning liquid, and the end of the clamping frame 7 close to the electric cleaning column 11 is rotatably connected to two electric clamping columns 12. After the multi-purpose block 10 absorbs the cleaning liquid, if it is used directly for cleaning, the cleaning liquid may drip on the surface of the protective cover 201 and affect the operation of the laser radar 2. Through the above arrangement, after the multi-purpose block 10 absorbs the cleaning liquid, most of the cleaning liquid absorbed by the multi-purpose block 10 can be squeezed out when passing through the electric clamping column 12, so as to prevent the cleaning liquid from dripping on the surface of the protective cover 201 when the multi-purpose block 10 is cleaned.

[0041] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An anti-interference vehicle-mounted radar, comprising a housing (1) and a fixed-point sweeping program, characterized in that: A laser radar (2) is installed inside the housing (1), a protective cover (201) is installed at one end of the laser radar (2), a window (101) is provided at one end of the housing (1) close to the protective cover (201), a multi-purpose block (10) is provided on one side of the protective cover (201), and a fiber layer (1001) is fixedly connected to the surface of the multi-purpose block (10); The method for using the fixed-point cleaning program comprises the following steps: S1, program start: when the capture intensity of the laser radar (2) decreases within 10% within 0-1 second, the fixed-point sweeping program is started, and the capture intensity of the laser radar (2) at this time is recorded as a; S2, scanning: the multi-purpose block (10) moves from one end of the protective cover (201) to the other end, and after each movement of the multi-purpose block (10), the multi-purpose block (10) moves upward once, and then the multi-purpose block (10) passes through the protective cover (201) again until the movement track of the multi-purpose block (10) covers the entire protective cover (201); S3, positioning: when the multi-purpose block (10) is moving and does not overlap with the foreign object, the capture intensity of the laser radar (2) is further reduced, which is recorded as b. When the multi-purpose block (10) moves to overlap with the foreign object, the capture intensity of the laser radar (2) is increased, which is recorded as c, and c≥a, c>b. When c≥a, c>b, the coordinates of the multi-purpose block (10) at this time are marked to complete the positioning of the foreign object. S4, cleaning: the multi-purpose block (10) absorbs the cleaning liquid and moves to the foreign matter for cleaning.

2. The anti-interference vehicle-mounted radar according to claim 1, characterized in that: The cleaning method of the multi-purpose block (10) in S4 is as follows: the multi-purpose block (10) absorbs the cleaning liquid and removes excess water, moves to the location of the foreign matter, and then closely adheres to the protective cover (201) and moves repeatedly to wipe off the foreign matter.

3. The anti-interference vehicle-mounted radar according to claim 1, characterized in that: The bottom end of the housing (1) is fixedly connected to an electric slide rail (3), one end of the electric slide rail (3) is slidably connected to a shift frame (4), and a lead screw (6) and two guide rods (5) are rotatably connected between the top and bottom ends of the shift frame (4).

4. The anti-interference vehicle-mounted radar according to claim 3, characterized in that: A clamping frame (7) is provided on one side of the displacement frame (4), the clamping frame (7) is sleeved on the outside of the laser radar (2), the guide rod (5) passes through the clamping frame (7) and is slidably connected thereto, and the screw rod (6) passes through the clamping frame (7) and is threadedly connected thereto.

5. The anti-interference vehicle-mounted radar according to claim 4, characterized in that: The four corners of the clamp frame (7) are rotatably connected to electric drive wheels (8), and a rotating rope (9) is rotatably connected between the four electric drive wheels (8). Both ends of the rotating rope (9) are fixedly connected to the multi-purpose block (10). The rotating rope (9) is sleeved on the outside of the laser radar (2), and the diameter of the rotating rope (9) is less than 1 mm.

6. The anti-interference vehicle-mounted radar according to claim 5, characterized in that: One end of the clamping frame (7) is rotatably connected to two electric cleaning columns (11); the top end of the housing (1) is fixedly connected to a liquid storage tank (13); one end of the liquid storage tank (13) is fixedly connected to an electric spray head (1301); one end of the electric spray head (1301) is located on the upper side of the electric cleaning column (11).

7. The anti-interference vehicle-mounted radar according to claim 6, characterized in that: One end of the clamping frame (7) close to the electric cleaning column (11) is rotatably connected to two electric clamping columns (12).

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