Camera optical axis calibration device of multi-view stereoscopic vision system

Abstract

The camera optical axis calibration device of the multi-view stereoscopic vision system comprises a bottom plate, a groove is formed in the top of the bottom plate, a threaded rod is rotatably installed in the groove, one end of the threaded rod penetrates through the bottom plate and is fixedly connected with a rotating disc, and the other end of the threaded rod is fixedly connected with a rotating shaft. A locking assembly used for locking the threaded rod is arranged on one side of the bottom plate, sliding blocks are in threaded connection with the outer walls of the two ends of the threaded rod, the threaded rod is driven to rotate by rotating a rotating disc, then the two sets of sliding blocks move, the two sets of sliding blocks drive a moving plate to move, and the position of the moving plate is adjusted. According to the optical axis calibrator, the optical axis calibrator is arranged, the sliding plate can move through cooperation of two sets of T-shaped sliding grooves and four sets of moving blocks, then the position of the optical axis calibrator is changed, a locking assembly is arranged, a locking head and a locking gear are matched, a threaded rod can be prevented from rotating, the position of the optical axis calibrator can be prevented from deviating, and the calibration precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of camera calibration, in particular to a camera optical axis calibration device for a multi-eye stereo vision system. Background Art

[0002] After the camera captures the image through the lens, the photosensitive component circuit and control component inside the camera process the image and convert it into a digital signal that can be recognized by the computer.

[0003] For example, a camera optical axis calibrator fixture (Announcement No.: CN217883654U), the device includes a base plate, an adjustment component arranged on the base plate, a mounting seat arranged on the adjustment component, a fixing component for fixing the optical axis calibrator, and a positioning component fixed on the base plate for positioning the optical axis calibrator, the mounting seat is provided with a slot, the optical axis calibrator is fixed by the fixing component and then plugged into the mounting seat, the fixing component includes a fixing sleeve, an extension rod connected to the fixing sleeve, a light-shielding cylinder covering the outside of the extension rod, the upper and lower sides of the light-shielding cylinder are arranged to be open, and the upper slide rail and the lower slide rail are arranged to ensure that the mounting seat can be fully adjusted in position with high adjustment flexibility, and the light-shielding cylinder is arranged to prevent the laser emitted by the optical axis calibrator from being affected by external light, and at the same time, the optical axis calibrator and the light-shielding cylinder are integrated and plugged into the mounting seat, with strong integrity and reduced debugging errors.

[0004] When the device is in use, the adjustment component is used to change the position of the optical axis calibrator. Since the optical axis of the camera requires a high accuracy when calibrating, and the adjustment component will shake when in use, affecting the calibration accuracy, we need to propose a camera optical axis calibration device for a multi-eye stereo vision system. Utility Model Content

[0005] The purpose of the utility model is to provide a camera optical axis calibration device for a multi-eye stereo vision system, which can prevent the threaded rod from rotating, avoid the position of the optical axis calibrator from shifting, ensure the calibration accuracy, and solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The camera optical axis calibration device of a multi-eye stereo vision system comprises a base plate, a groove is provided on the top of the base plate, a threaded rod is rotatably installed inside the groove, one end of the threaded rod passes through the base plate and is fixedly connected to a turntable, a locking assembly for locking the threaded rod is provided on one side of the base plate, sliders are threadedly connected on the outer walls of both ends of the threaded rod, a moving plate is fixedly connected to the top of two groups of sliders, a sliding plate is slidably installed on the top of the moving plate, four groups of support columns are symmetrically fixedly installed on the top of the base plate, the tops of the four groups of support columns are fixedly connected to a top plate, an electric push rod is fixedly installed on the top of the top plate, the bottom end of the electric push rod piston rod passes through the top plate and is fixedly connected to a connecting plate, a laser receiver is provided at the bottom of the connecting plate, and a fixing assembly for fixing the laser receiver is also provided at the bottom of the connecting plate.

[0008] Preferably, the locking assembly comprises a rotating rod, which is rotatably mounted on one side of the base plate, one end of the rotating rod is fixedly connected to a movable plate, and the bottom of the movable plate is fixedly connected to a locking head.

[0009] Preferably, a locking gear is fixedly sleeved on the outer wall of one end of the threaded rod, and one end of the locking head is meshed with the locking gear.

[0010] Preferably, two groups of limit grooves are symmetrically opened on the top of the base plate, and limit rods are fixedly installed inside the two groups of limit grooves. Support blocks are slidably installed on the outer walls at both ends of the two groups of limit rods, and the tops of the four groups of support blocks are fixedly connected to the movable plate.

[0011] Preferably, two groups of T-shaped slots are symmetrically provided on the top of the movable plate, two groups of movable blocks are slidably installed inside the two groups of T-shaped slots, and the tops of the four groups of movable blocks are fixedly connected to the sliding plate.

[0012] Preferably, a mounting groove is provided on the top of the sliding plate, and an optical axis calibrator is arranged inside the mounting groove.

[0013] Preferably, the fixing assembly includes two groups of fixing plates, which are symmetrically fixed on the bottom of the connecting plate, and two groups of springs are fixedly connected to opposite sides of the two groups of fixing plates, and one end of the two groups of springs is fixedly connected to a clamping plate, and the two groups of clamping plates are respectively fitted with two sides of the laser receiver.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model rotates a turntable, which drives a threaded rod to rotate, thereby causing two groups of sliders to move. The two groups of sliders drive a movable plate to move, and the position of the movable plate is adjusted. The sliding plate can be moved through the cooperation of two groups of T-shaped slide grooves and four groups of movable blocks, thereby changing the position of the optical axis calibrator. A locking assembly is provided, and the threaded rod can be prevented from rotating through the cooperation of a locking head and a locking gear, thereby preventing the position of the optical axis calibrator from shifting, thereby ensuring the calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a structural schematic diagram of the fixing component of the utility model.

[0020] In the figure: 1. bottom plate; 2. threaded rod; 3. turntable; 4. slider; 5. moving plate; 6. sliding plate; 7. support column; 8. top plate; 9. electric push rod; 10. connecting plate; 11. laser receiver; 12. rotating rod; 13. movable plate; 14. locking head; 15. locking gear; 16. limiting rod; 17. supporting block; 18. moving block; 19. optical axis calibrator; 20. fixed plate; 21. spring; 22. clamping plate. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] The camera optical axis calibration device of the multi-eye stereo vision system comprises a base plate 1, a groove is provided on the top of the base plate 1, a threaded rod 2 is rotatably installed inside the groove, one end of the threaded rod 2 passes through the base plate 1 and is fixedly connected to a turntable 3, a locking assembly for locking the threaded rod 2 is provided on one side of the base plate 1, sliders 4 are threadedly connected to the outer walls of both ends of the threaded rod 2, and a moving plate 5 is fixedly connected to the top of two groups of sliders 4, and by rotating the turntable 3, the turntable 3 drives the threaded rod 2 to rotate, so that the two groups of sliders 4 are moved, and then the moving plate 5 is driven to move, and the moving plate 5 is moved. A sliding plate 6 is slidably installed on the top, four groups of support columns 7 are symmetrically fixedly installed on the top of the bottom plate 1, a top plate 8 is fixedly connected to the top of the four groups of support columns 7, an electric push rod 9 is fixedly installed on the top of the top plate 8, the bottom end of the piston rod of the electric push rod 9 penetrates the top plate 8 and is fixedly connected to a connecting plate 10, a laser receiver 11 is arranged at the bottom of the connecting plate 10, and a fixing component for fixing the laser receiver 11 is also arranged at the bottom of the connecting plate 10, the piston rod of the electric push rod 9 is extended and retracted, the connecting plate 10 is driven to move, and then the laser receiver 11 is moved;

[0024] The locking assembly includes a rotating rod 12, which is rotatably mounted on one side of the base plate 1, one end of the rotating rod 12 is fixedly connected to a movable plate 13, the bottom of the movable plate 13 is fixedly connected to a locking head 14, a locking gear 15 is fixedly sleeved on the outer wall of one end of the threaded rod 2, and one end of the locking head 14 is meshed with the locking gear 15, and the threaded rod 2 can be prevented from rotating by the cooperation of the locking head 14 and the locking gear 15, so that the position of the optical axis calibrator 19 can be prevented from being offset, thereby ensuring the calibration accuracy;

[0025] Two groups of limiting grooves are symmetrically provided on the top of the bottom plate 1. Limiting rods 16 are fixedly installed inside the two groups of limiting grooves. Support blocks 17 are slidably installed on the outer walls of both ends of the two groups of limiting rods 16. The tops of the four groups of supporting blocks 17 are fixedly connected to the moving plate 5. Through the cooperation of the two groups of limiting rods 16 and the four groups of supporting blocks 17, not only the moving plate 5 can be limited, but also the moving plate 5 can be supported, thereby improving the stability of the moving plate 5.

[0026] Two groups of T-shaped slide grooves are symmetrically provided on the top of the moving plate 5, and two groups of moving blocks 18 are slidably installed inside the two groups of T-shaped slide grooves. The tops of the four groups of moving blocks 18 are fixedly connected to the sliding plate 6. The four groups of moving blocks 18 move inside the two groups of T-shaped slide grooves respectively, driving the sliding plate 6 to move, thereby adjusting the position of the optical axis calibrator 19;

[0027] A mounting groove is provided on the top of the sliding plate 6, and an optical axis calibrator 19 is provided inside the mounting groove to fix the optical axis calibrator 19 to prevent the optical axis calibrator 19 from shaking;

[0028] The fixing assembly includes two groups of fixing plates 20, which are symmetrically fixed on the bottom of the connecting plate 10. Two groups of springs 21 are fixedly connected to the opposite sides of the two groups of fixing plates 20. One end of the two groups of springs 21 is fixedly connected to a clamping plate 22, and the two groups of clamping plates 22 are respectively fitted with the two sides of the laser receiver 11. The rebound force of the four groups of springs 21 can drive the two groups of clamping plates 22 to move, so that the two groups of clamping plates 22 fix the laser receiver 11.

[0029] Working principle: When the utility model is used, by rotating the turntable 3, the turntable 3 drives the threaded rod 2 to rotate, thereby making the two groups of sliders 4 move, and the two groups of sliders 4 drive the movable plate 5 to move, and adjust the position of the movable plate 5, and then through the cooperation of two groups of T-shaped slide grooves and four groups of movable blocks 18, the sliding plate 6 can be moved, thereby changing the position of the optical axis calibrator 19, and by providing a locking assembly, through the cooperation of the locking head 14 and the locking gear 15, the threaded rod 2 can be prevented from rotating, and the position of the optical axis calibrator 19 can be prevented from being offset, thereby ensuring the calibration accuracy.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A camera optical axis calibration device for a multi-eye stereo vision system, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is provided with a groove, a threaded rod (2) is rotatably mounted inside the groove, one end of the threaded rod (2) passes through the bottom plate (1) and is fixedly connected to a turntable (3), one side of the bottom plate (1) is provided with a locking assembly for locking the threaded rod (2), both ends of the outer wall of the threaded rod (2) are threadedly connected with sliders (4), the tops of the two groups of sliders (4) are fixedly connected with moving plates (5), and the tops of the moving plates (5) are slidably mounted with a sliding plate (6), so that Four groups of support columns (7) are symmetrically fixedly installed on the top of the base plate (1), and the tops of the four groups of support columns (7) are fixedly connected to a top plate (8). An electric push rod (9) is fixedly installed on the top of the top plate (8). The bottom end of the piston rod of the electric push rod (9) passes through the top plate (8) and is fixedly connected to a connecting plate (10). A laser receiver (11) is arranged at the bottom of the connecting plate (10), and a fixing component for fixing the laser receiver (11) is also arranged at the bottom of the connecting plate (10).

2. The camera optical axis calibration device of a multi-eye stereo vision system according to claim 1, characterized in that: The locking assembly comprises a rotating rod (12) which is rotatably mounted on one side of the base plate (1); one end of the rotating rod (12) is fixedly connected to a movable plate (13); and the bottom of the movable plate (13) is fixedly connected to a locking head (14).

3. The camera optical axis calibration device of the multi-eye stereo vision system according to claim 2, characterized in that: A locking gear (15) is fixedly sleeved on the outer wall of one end of the threaded rod (2), and one end of the locking head (14) is meshed with the locking gear (15).

4. The camera optical axis calibration device for a multi-eye stereo vision system according to claim 1, characterized in that: The top of the bottom plate (1) is symmetrically provided with two groups of limit grooves, and the insides of the two groups of limit grooves are fixedly installed with limit rods (16), and support blocks (17) are slidably installed on the outer walls at both ends of the two groups of limit rods (16), and the tops of the four groups of support blocks (17) are fixedly connected to the movable plate (5).

5. The camera optical axis calibration device for a multi-eye stereo vision system according to claim 1, characterized in that: The top of the movable plate (5) is symmetrically provided with two groups of T-shaped sliding grooves, and two groups of movable blocks (18) are slidably installed inside the two groups of T-shaped sliding grooves. The tops of the four groups of movable blocks (18) are fixedly connected to the sliding plate (6).

6. The camera optical axis calibration device of a multi-eye stereo vision system according to claim 1, characterized in that: A mounting groove is provided on the top of the sliding plate (6), and an optical axis calibrator (19) is arranged inside the mounting groove.

7. The camera optical axis calibration device of a multi-eye stereo vision system according to claim 1, characterized in that: The fixing assembly comprises two groups of fixing plates (20), the two groups of fixing plates (20) are symmetrically fixedly installed on the bottom of the connecting plate (10), two groups of springs (21) are fixedly connected to opposite sides of the two groups of fixing plates (20), one end of the two groups of springs (21) is fixedly connected to a clamping plate (22), and the two groups of clamping plates (22) are respectively fitted with two sides of the laser receiver (11).

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