Dustproof device for laser radar vehicle detector
By using a combination of servo motors, movable covers and cleaning cotton blocks in the lidar vehicle detector, the surface of the radar is automatically cleaned, and the ground-sensitive coil sensor and temperature sensor are used to maintain the radar stability in low temperature environments, the lidar is solved in bad weather. The problem of inaccurate detection improves the accuracy and stability of detection.
Patent Information
- Application Number
- CN202323590120.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-27
AI Technical Summary
When lidar is used in rainy and snowy weather, due to the wind blowing raindrops or snow sticking to the radar surface, dust in the air will stick to the radar surface. After the raindrops or snow evaporate, the dust will stick to the radar surface to form dirty points, causing radar to launch. and the received laser light is interfered with, resulting in inaccurate detection.
A lidar vehicle detector dustproof device was designed, using a combination of servo motor, connecting gear, movable cover and cleaning cotton blocks to automatically clean the surface of the radar body, combined with ground-sensitive coil sensor and temperature sensor to realize the low temperature environment. Automatically turn on and heat insulation to ensure the stability of the detection function.
Effectively prevent dust and dirty points from affecting the radar detection accuracy, improve the working stability and accuracy of the radar in bad weather, and ensure the real-time and accuracy of vehicle detection.
Smart Images
Figure CN222280827U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent vehicle information collection devices, in particular to a dustproof device for a laser radar vehicle inspection device. Background Art
[0002] Vehicle type detection is one of the elements of traffic information collection. Laser scanning is the most widely used method in vehicle type detection systems due to its advantages such as high precision and fast scanning speed. The principle of laser scanning is mainly that laser radar uses modulated laser that is harmless to the human eye to scan the entire vehicle, and collects the laser reflected from various positions of the vehicle to measure the distance and calculate the vehicle appearance data to achieve the purpose of vehicle type detection.
[0003] When lidar is used in rainy or snowy weather, the wind will blow raindrops or snow to the radar surface, and dust in the air will stick to the radar surface. After the raindrops or snow evaporates, the dust will adhere to the radar surface to form dirty spots. The lasers emitted and received by the radar will be interfered by these dirty spots, resulting in inaccurate detection. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a dust-proof device for a laser radar vehicle inspection device, which solves the problem that the laser emission and receiving area of the vehicle inspection device may be affected by dust spots and affect normal operation.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a dust-proof device for a laser radar vehicle detector, comprising a base, a top surface of the base is connected to a support rod, one end of the support rod is connected to a connecting frame, a detection unit is arranged inside the connecting frame, and the outer surface of the support rod is connected to a control box;
[0006] The detection unit includes a fixing plate, a surface of the fixing plate is connected to a driving box, one side of the driving box is connected to a radar body, a shell is provided on one side of the fixing plate and located inside the driving box and the radar body, and a detection groove is provided on the outer surface of the radar body.
[0007] As a further technical solution of the utility model, one end of the connecting frame is connected to the outer surface of the support rod, one end of the connecting frame is connected to a protective cover, the protective cover is located on the upper surface of the fixed plate, and a temperature sensor is installed on the inner wall of the protective cover.
[0008] As a further technical solution of the utility model, the inner side wall of the detection groove is connected to two movable covers, movable grooves are provided at the corresponding positions of the inner side wall of the radar body and the sliding path of the movable cover, two servo motors are arranged inside the fixed plate, and the driving ends of the two servo motors are connected to connecting gears.
[0009] As a further technical solution of the utility model, the outer surfaces of the two movable covers are provided with a plurality of connecting teeth, the outer surface of the radar body and the connection with the two movable covers are provided with through grooves, the inner side walls of the two movable covers and the outer surface of the outer shell are connected with cleaning cotton blocks, the interiors of the two movable covers are provided with heating plates, and the movable covers are meshed with connecting gears through connecting teeth.
[0010] As a further technical solution of the utility model, a ground sensing coil sensor is buried at the vehicle aisle below one side of the detection unit, and the control end of the control box is electrically connected to the ground sensing coil sensor and the detection unit.
[0011] As a further technical solution of the utility model, the inner diameter of the movable groove is adapted to the sliding path of the movable cover, the inner wall of the cleaning cotton block is attached to the outer surface of the shell, and the detection groove is located in the laser beam emission area of the shell.
[0012] Beneficial Effects
[0013] The utility model provides a dust-proof device for a laser radar vehicle inspection device. Compared with the prior art, it has the following beneficial effects:
[0014] 1. A dustproof device for a laser radar vehicle inspection device, through the cooperation between a servo motor, a connecting gear, a radar body, a movable cover, connecting teeth and a detection slot, can facilitate the movable cover to protect the detection slot and the detection area of the radar body from dust, and the cleaning cotton block on the inner wall of the movable cover can clean the surface of the radar body when the movable cover is running, preventing dust spots from affecting the operation of the radar body and improving the accuracy of radar detection.
[0015] 2. A dust-proof device for a laser radar vehicle inspection device, which can automatically open a movable cover when a car reaches the detection area and realize the detection function of the radar through the cooperation between the ground sensing coil sensor, the temperature sensor, the heating plate and the control box. The temperature sensor and the heating plate can achieve the heating and insulation effect of the radar body under low temperature conditions, thereby improving the working stability of the radar in low temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of a dust prevention device for a laser radar vehicle inspection device;
[0017] Figure 2 This is a front view of a dust prevention device for a laser radar vehicle inspection device;
[0018] Figure 3 A schematic diagram of the internal structure of a detection unit of a dust prevention device of a laser radar vehicle detector;
[0019] Figure 4It is a front view of a detection unit of a dust prevention device of a laser radar vehicle detector;
[0020] Figure 5 A dust-proof device for a laser radar vehicle inspection device Figure 4 AA section view in;
[0021] Figure 6 A schematic diagram of the detection unit in the present invention starting to work when a vehicle is sensed;
[0022] Figure 7 It is a schematic diagram of the detection unit stopping working when no vehicle is sensed in the present invention.
[0023] In the figure: 1. base; 2. support rod; 3. connecting frame; 31. protective cover; 32. temperature sensor; 4. detection unit; 41. fixing plate; 42. drive box; 43. shell; 44. radar body; 45. detection slot; 46. movable cover; 47. movable slot; 48. connecting teeth; 49. servo motor; 401. connecting gear; 402. cleaning cotton block; 403. heating plate; 5. control box. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-4 The utility model provides a technical solution for a dustproof device of a laser radar vehicle inspection device: a dustproof device of a laser radar vehicle inspection device, comprising a base 1, the top surface of the base 1 is connected to a support rod 2, one end of the support rod 2 is connected to a connecting frame 3, a detection unit 4 is arranged inside the connecting frame 3, the outer surface of the support rod 2 is connected to a control box 5, the detection unit 4 comprises a fixing plate 41, the surface of the fixing plate 41 is connected to a driving box 42, one side of the driving box 42 is connected to a radar body 44, a shell 43 is arranged on one side of the fixing plate 41 and located inside the driving box 42 and the radar body 44, and a detection groove 45 is opened on the outer surface of the radar body 44.
[0026] like Figure 1-2As shown, one end of the connecting frame 3 is connected to the outer surface of the support rod 2, and one end of the connecting frame 3 is connected to a protective cover 31, which is located on the upper surface of the fixing plate 41, and a temperature sensor 32 is installed on the inner wall of the protective cover 31. It should be noted that the protective cover 31 can protect the top light source and rainwater of the detection unit 4 to prevent affecting the normal operation of the scanning detection function of the radar body 44, and the temperature sensor 32 can be connected to the heating plate 403 inside the movable cover 46, and under low temperature conditions, the heating plate 403 is started to ensure the working stability of the radar body 44 in a low temperature environment.
[0027] like Figure 3-5 As shown, the inner side wall of the detection slot 45 is connected to two movable covers 46, the inner side wall of the radar body 44 and the corresponding position of the sliding path of the movable cover 46 are provided with movable slots 47, the interior of the fixed plate 41 is provided with two servo motors 49, the driving ends of the two servo motors 49 are connected with connecting gears 401, the outer surfaces of the two movable covers 46 are provided with a plurality of connecting teeth 48, the outer surface of the radar body 44 and the connection with the two movable covers 46 are provided with through grooves, the inner side walls of the two movable covers 46 and the outer surface of the outer shell 43 are connected with cleaning cotton blocks 402, and the two movable A heating plate 403 is provided inside the cover 46. The movable cover 46 is meshed with the connecting gear 401 through the connecting teeth 48. The inner diameter of the movable groove 47 is adapted to the sliding path of the movable cover 46. The inner wall of the cleaning cotton block 402 is attached to the outer surface of the outer shell 43. The detection groove 45 is located in the laser beam emission area of the outer shell 43. It should be noted that the two servo motors 49 and the connecting gear 401 can drive the movable cover 46 to move on the inner walls of the movable groove 47 and the detection groove 45 through the connecting teeth 48, which is convenient for the detection of the radar body 44 and protects and cleans the detection end.
[0028] like Figure 6 and 7 As shown, a ground sensing coil sensor is buried at the lower side of the detection unit 4 in the vehicle aisle, and the control end of the control box 5 is electrically connected to the ground sensing coil sensor and the detection unit 4. It should be noted that the ground sensing coil sensor can be linked with the control box 5 to facilitate starting the radar body 44 and the two servo motors 49 when the car arrives at the detection area, thereby realizing the real-time detection function of the radar.
[0029] The working principle of the utility model is as follows: when the car drives to the detection area, the ground induction coil sensor detects that the car has arrived, the control box 5 sends a signal, and the two servo motors 49 are started at the same time. Through the rotation of the two connecting gears 401 and the meshing of a plurality of connecting teeth 48, the two movable covers 46 are driven to slide along the inner wall of the movable groove 47 and move away from the detection groove 45, and the radar body 44 is started. Through the feedback of the laser emission and receiving area of the radar body 44, the car in the detection area can be scanned and detected in real time. After the detection is completed, the two servo motors 49 drive the two connecting gears 401 to reverse, so that the two movable covers 46 are reset to the detection groove 45, and the shell 43 is closed;
[0030] In low temperature conditions, the temperature sensor 32 sends a signal to start the heating plate inside the movable cover 46 to achieve a heating and heat preservation effect on the radar body 44 to prevent the normal operation of the radar body 44 from being affected in the low temperature condition.
Claims
1. A dust-proof device for a laser radar vehicle detector, comprising a base (1), characterized in that: The top surface of the base (1) is connected to a support rod (2), one end of the support rod (2) is connected to a connecting frame (3), a detection unit (4) is arranged inside the connecting frame (3), and the outer surface of the support rod (2) is connected to a control box (5); The detection unit (4) comprises a fixing plate (41), a surface of the fixing plate (41) is connected to a driving box (42), a side surface of the driving box (42) is connected to a radar body (44), a housing (43) is provided on a side surface of the fixing plate (41) and is located inside the driving box (42) and the radar body (44), and a detection groove (45) is provided on the outer surface of the radar body (44).
2. A dust-proof device for a laser radar vehicle inspection device according to claim 1, characterized in that: One end of the connecting frame (3) is connected to the outer surface of the support rod (2), and one end of the connecting frame (3) is connected to a protective cover (31), the protective cover (31) is located on the upper surface of the fixing plate (41), and a temperature sensor (32) is installed on the inner wall of the protective cover (31).
3. The dust-proof device of a laser radar vehicle inspection device according to claim 1, characterized in that: The inner side wall of the detection slot (45) is connected to two movable covers (46), and movable slots (47) are provided at corresponding positions of the inner side wall of the radar body (44) and the sliding path of the movable covers (46). Two servo motors (49) are arranged inside the fixing plate (41), and the driving ends of the two servo motors (49) are connected to connecting gears (401).
4. A dust-proof device for a laser radar vehicle inspection device according to claim 3, characterized in that: The outer surfaces of the two movable covers (46) are each provided with a plurality of connecting teeth (48); the outer surface of the radar body (44) and the connection between the two movable covers (46) are each provided with a through groove; the inner side walls of the two movable covers (46) and the outer surface of the outer shell (43) are each connected with a cleaning cotton block (402); a heating plate (403) is each provided inside the two movable covers (46); and the movable covers (46) are meshed with the connecting gear (401) via the connecting teeth (48).
5. The dust-proof device for a laser radar vehicle inspection device according to claim 1, characterized in that: A ground coil sensor is buried below one side of the detection unit (4) at the vehicle passage, and the control end of the control box (5) is electrically connected to the ground coil sensor and the detection unit (4).
6. A dust-proof device for a laser radar vehicle inspection device according to claim 4, characterized in that: The inner diameter of the movable groove (47) is adapted to the sliding path of the movable cover (46), the inner side wall of the cleaning cotton block (402) is attached to the outer surface of the shell (43), and the detection groove (45) is located in the laser beam emission area of the shell (43).