Visual calibration board device

Abstract

The utility model provides a visual calibration plate device which comprises two sets of bottom plates, the two sets of bottom plates are slidably connected in a staggered mode, telescopic columns are arranged at the tops of the outmost ends of the two sets of bottom plates, clamping assemblies are arranged on the inner sides of the telescopic columns, the clamping assemblies comprise second telescopic plates, and the second telescopic plates are connected with the telescopic columns in a staggered mode. The storage ends and the extension ends of the second telescopic plates are installed at the bottoms and the tops of the telescopic columns correspondingly, clamps are installed on the inner sides of the storage ends and the extension ends of the second telescopic plates, and calibration plate bodies are installed in the clamps of the two second telescopic plates in a clamped mode. Through dislocation of the two sets of bottom plates, unfolding of the telescopic columns and clamping and positioning of the clamping assemblies, the device can be installed and used according to calibration plates of different sizes, meanwhile, the angle and direction of the calibration plates are conveniently adjusted through the steering assemblies, and when the device is not used, the size of the device can be reduced through folding and storage, so that storage and arrangement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of machine vision, in particular to a vision calibration plate device. Background Technique

[0002] The vision calibration plate is mainly used for calibrating the machine vision system to improve the accuracy of image recognition and measurement. It establishes a geometric model of camera imaging, corrects lens distortion, determines the conversion relationship between physical size and pixels, and determines the mutual relationship between the three-dimensional geometric position of a certain point on the surface of a spatial object and its corresponding point in the image. The vision calibration plate plays an important role in the fields of machine vision, image measurement, photogrammetry, three-dimensional reconstruction, etc. The calibration plate is used to determine the relative position between the camera and the robot. However, the existing calibration plate moving platform is usually fixed on the robot or the camera and cannot move freely; especially when using a large-field calibration plate, the calibration plate is inconvenient to move, it is not convenient and stable to lift the calibration plate manually, and the angle of the calibration plate cannot be adjusted during calibration, resulting in poor flexibility and low calibration efficiency.

[0003] Patent CN221258450U proposes a calibration plate moving platform, which realizes the free movement of the calibration plate and the adjustment of the angle of the calibration plate through lockable universal wheels and a rotating component, making the calibration plate more flexible during use, and the operation is simple, improving the calibration efficiency, solving the problems of inconvenient movement of the calibration plate, non-adjustable angle of the calibration plate during calibration, and poor flexibility in the prior art. Paired limiting blocks with an "L" - shaped structure are installed on the first side and the second side of the installation frame to facilitate fixing the calibration plate, and the short side of the "L" - shaped structure can abut against the calibration plate to make the calibration plate firmly installed. The moving frame adopts a combined structure of a horizontal frame, a vertical frame and a reinforcing cross bar, making the calibration plate moving platform structure stable and ensuring the positioning accuracy of the calibration plate.

[0004] The deficiencies in the above - mentioned scheme are as follows: the overall frame is large in size and not convenient for storage and arrangement. At the same time, it cannot be adjusted for use with calibration plates of different sizes, so the applicability to the calibration plate is poor. Content of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a vision calibration plate device to solve the problems raised in the above - mentioned background technique. The structure of the utility model is novel. Through the dislocation of two groups of bottom plates, the expansion of telescopic columns and the clamping and positioning of the clamping components, calibration plates of different sizes can be installed and used. At the same time, through the steering component, the angle and direction of the calibration plate can be conveniently adjusted. When not in use, the volume of the device can be reduced through the folding and storage structure, thus facilitating storage and arrangement.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A vision calibration plate device includes a bottom plate. There are two groups of the bottom plates, and the two groups of bottom plates are slidably connected in a staggered manner. Telescopic columns are provided at the tops of the outermost ends of the two groups of bottom plates. A clamping assembly is provided inside the telescopic columns. The clamping assembly includes a second telescopic plate. The retracted end and the extended end of the second telescopic plate are respectively installed at the bottom and the top of the telescopic column. Clamps are installed inside the retracted end and the extended end of the second telescopic plate. A calibration plate body is clamped and installed in the clamps of the two second telescopic plates. A steering assembly is provided at the connection between the second telescopic plate and the telescopic column. The steering assembly includes a sliding frame. A slider is slidably connected inside the sliding frame. The second telescopic plate is connected to the slider. A base is provided at the bottom of the telescopic column, and a pulley is installed at the bottom of the base.

[0007] Further, the clamping assembly further includes a collar. A collar is slidably sleeved on the surface of the retracted end of the telescopic column. A fixed ring is fixed at the extended end of the telescopic column. And one sides of the collar and the fixed ring facing the second telescopic plate are both fixedly connected to the sliding frame.

[0008] Further, locking bolts are inserted at the outer end of the collar and the port of the retracted end of the telescopic column. The position of the collar and the length of the telescopic column are fixed by the locking bolts.

[0009] Further, the steering assembly further includes a screw rod. A screw rod is rotatably installed inside the sliding frame on the outer sides of the fixed ring and the collar through bearings. And the slider is threadedly sleeved on the surface of the screw rod.

[0010] Further, the outer side of the slider is rotatably connected to a third telescopic plate through a rotating shaft. And the other end of the third telescopic plate is rotatably connected to the extended end and the retracted end of the second telescopic plate respectively through rotating shafts.

[0011] Further, a mounting plate is fixed at the top of the base. And the bottom of the telescopic column is fixed on the mounting plate. The telescopic columns at the tops of the two mounting plates are on the same straight line.

[0012] Further, a connecting plate is provided at the middle position of the bottom of the calibration plate body. And one end of the connecting plate is fixed on the bottom plate. The other end of the connecting plate is in sliding contact with the other group of bottom plates. A turning knob is rotatably installed at the top of the connecting plate. And two groups of first telescopic plates are installed at the bottom of the turning knob. The other ends of the first telescopic plates are rotatably connected to the mounting plate through rotating shafts.

[0013] Further, an elastic rubber layer is provided on the surface of the base adjacent to the bottom plate.

[0014] The beneficial effects of the utility model:

[0015] 1. The utility model keeps two telescopic columns in a straight line through the mounting plate, thereby facilitating the flat clamping and fixing of the calibration plate body. By rotating the turning knob, the two groups of bases can be rotated around the connection by relying on the first telescopic plate, thereby adjusting the horizontal direction angle of the calibration plate body. The base moves by sliding at the bottom. At the same time, when the two groups of bottom plates are unfolded or contracted, the first telescopic plate cooperates with the unfolding or contraction.

[0016] 2. The utility model slides along the moving groove through the threaded cooperation of the slider and the screw. When the rotation directions of the screws on the outer sides of the fixed ring and the collar are opposite, the upper and lower sliders move in opposite directions. Through the connection and flexibility of the third telescopic plate, the clamping assembly together with the calibration plate body is rotated and tilted by a certain angle to meet the needs of camera capture.

[0017] 3. The length of the telescopic column of the utility model can be adjusted by unlocking the locking bolt. When the length of the collar is locked, the length of the second telescopic plate will not change. The collar slides along the surface of the telescopic column, and the installation height of the calibration plate can be adjusted. When the locking bolt of the collar is locked, the unfolding of the telescopic column will drive the unfolding of the second telescopic plate, adjusting the distance between the upper and lower groups of clamps to meet the clamping use of calibration plates of different heights.

[0018] 4. Compared with the prior art, the utility model can be installed and used for calibration plates of different sizes through the dislocation of the two groups of bottom plates, the unfolding of the telescopic columns, and the clamping and positioning of the clamping assembly. At the same time, the angle and direction of the calibration plate can be conveniently adjusted through the steering assembly. When not in use, the volume of the device can be reduced through the folding and storage structure, thus facilitating storage and arrangement. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a vision calibration plate device of the utility model;

[0020] Figure 2 It is a schematic diagram of the installation structure of the clamping assembly of a vision calibration plate device of the utility model;

[0021] Figure 3 It is a schematic diagram of the base connection structure of a vision calibration plate device of the utility model;

[0022] Figure 4 It is a schematic diagram of the steering assembly structure of a vision calibration plate device of the utility model.

[0023] In the figure: 1, bottom plate; 11, connecting plate; 12, turning knob; 13, first telescopic plate; 14, base; 15, pulley; 2, calibration plate body; 3, telescopic column; 31, mounting plate; 4, clamping assembly; 41, second telescopic plate; 42, clamp; 43, collar; 44, fixed ring; 45, locking bolt; 5, steering assembly; 51, sliding frame; 52, screw; 53, slider; 54, third telescopic plate. Detailed implementation mode

[0024] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0025] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a vision calibration plate device, including a bottom plate 1, there are two groups of the bottom plates 1, the two groups of the bottom plates 1 are connected by dislocation sliding, the tops of the outermost ends of the two groups of the bottom plates 1 are both provided with telescopic columns 3, a clamping assembly 4 is arranged inside the telescopic columns 3, the clamping assembly 4 includes a second telescopic plate 41, the receiving end and the extending end of the second telescopic plate 41 are respectively installed at the bottom and the top of the telescopic column 3, clamping fixtures 42 are installed inside the receiving end and the extending end of the second telescopic plate 41, a calibration plate body 2 is clamped and installed in the clamping fixtures 42 of the two groups of the second telescopic plates 41, a steering assembly 5 is arranged at the connection between the second telescopic plate 41 and the telescopic column 3, the steering assembly 5 includes a sliding frame 51, a sliding block 53 is slidably connected inside the sliding frame 51, the second telescopic plate 41 is connected with the sliding block 53, a base 14 is arranged at the bottom of the telescopic column 3, and a pulley 15 is installed at the bottom of the base 14. When using the device, according to the length and width of the calibration plate body 2, adjust the positions of the two bottom plates 1 and the length of the telescopic columns 3, clamp the four corners of the calibration plate body 2 through the four groups of clamping fixtures 42, and then adjust the angle of the calibration plate body 2 through the steering assembly 5 for the camera to capture. When not in use, fold and store the device to reduce the occupied space.

[0026] In this embodiment, the clamping assembly 4 further includes a collar 43, the collar 43 is slidably sleeved on the surface of the receiving end of the telescopic column 3, a fixed ring 44 is fixed at the extending end of the telescopic column 3, and one sides of the collar 43 and the fixed ring 44 facing the second telescopic plate 41 are both fixedly connected with the sliding frame 51. Locking bolts 45 are inserted at the outer end of the collar 43 and the port of the receiving end of the telescopic column 3. The position of the collar 43 and the length of the telescopic column 3 are fixed by the locking bolts 45. The length of the telescopic column 3 can be adjusted by unlocking the locking bolts 45. When the length of the collar 43 is locked, the length of the second telescopic plate 41 will not change. The collar 43 slides along the surface of the telescopic column 3, and the installation height of the calibration plate can be adjusted. When the locking bolts 45 of the collar 43 are locked, the expansion of the telescopic column 3 will drive the expansion of the second telescopic plate 41 to adjust the distance between the upper and lower groups of clamping fixtures 42 to meet the clamping use of calibration plates of different heights.

[0027] In this embodiment, the steering assembly 5 further includes a screw rod 52. The screw rod 52 is rotatably installed inside a sliding frame 51 on the outer sides of the fixed ring 44 and the collar 43 through bearings. A slider 53 is threadedly sleeved on the surface of the screw rod 52. The outer side of the slider 53 is rotatably connected to a third telescopic plate 54 through a rotating shaft. The other end of the third telescopic plate 54 is rotatably connected to the extended end and the retracted end of the second telescopic plate 41 through rotating shafts respectively. When the screw rod 52 rotates, the slider 53 is in threaded cooperation with the screw rod 52 and slides along the moving groove. When the rotation directions of the screw rods 52 on the outer sides of the fixed ring 44 and the collar 43 are opposite, the upper and lower sliders 53 move in opposite directions. Through the connection and flexibility of the third telescopic plate 54, the clamping assembly 4 together with the calibration plate body 2 is rotated and tilted by a certain angle to meet the needs of camera capture.

[0028] In this embodiment, an installation plate 31 is fixed on the top of the base 14, and the bottom of the telescopic column 3 is fixed on the installation plate 31. The telescopic columns 3 on the tops of the two installation plates 31 are on the same straight line. A connecting plate 11 is provided at the middle position of the bottom of the calibration plate body 2. One end of the connecting plate 11 is fixed on the bottom plate 1. The other end of the connecting plate 11 is in sliding contact with another group of bottom plates 1. A turning knob 12 is rotatably installed on the top of the connecting plate 11. Two groups of first telescopic plates 13 are installed at the bottom of the turning knob 12. The other ends of the first telescopic plates 13 are rotatably connected to the installation plate 31 through rotating shafts. An elastic rubber layer is provided on the surface of the base 14 adjacent to the bottom plate 1. By means of the installation plate 31, the two telescopic columns 3 are kept on the same straight line, thus facilitating the clamping and fixing of the calibration plate body 2 to be flat. By rotating the turning knob 12, the two groups of bases 14 can be rotated around the connection by relying on the first telescopic plates 13, thereby adjusting the horizontal direction angle of the calibration plate body 2. The base 14 moves by sliding at the bottom. When the two groups of bottom plates 1 are expanded or contracted, the first telescopic plates 13 cooperate to expand or contract.

[0029] When using the device, adjust the positions of the two bottom plates 1 and the lengths of the telescopic columns 3 according to the length and width of the calibration plate body 2. When the length of the collar 43 is locked, the length of the second telescopic plate 41 will not change. The collar 43 slides along the surface of the telescopic column 3, and the installation height of the calibration plate can be adjusted. When the locking bolt 45 of the collar 43 is locked, the expansion of the telescopic column 3 will drive the expansion of the second telescopic plate 41, adjusting the distance between the upper and lower sets of clamps 42 to meet the clamping use of calibration plates of different heights. Clamp the four corners of the calibration plate body 2 with the four sets of clamps 42. Rotate the screw rod 52, and the slider 53 is in threaded cooperation with the screw rod 52 and slides along the moving groove. When the screw rods 52 on the outer sides of the fixed ring 44 and the collar 43 rotate in opposite directions, the upper and lower sliders 53 move in opposite directions. Through the connection and flexibility of the third telescopic plate 54, the clamping assembly 4 together with the calibration plate body 2 is rotated and tilted at a certain angle. Keep the two telescopic columns 3 in the same straight line through the mounting plate 31, thereby facilitating the flat clamping and fixing of the calibration plate body 2. By rotating the knob 12, the two sets of bases 14 can be rotated around the connection by relying on the first telescopic plate 13, thereby adjusting the horizontal direction angle of the calibration plate body 2. The bases 14 move by sliding at the bottom. At the same time, when the two bottom plates 1 are expanded or contracted, the first telescopic plate 13 cooperates to expand or contract to meet the needs of camera capture for easy camera capture.

[0030] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not each embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A visual calibration plate device, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with two groups, and the two groups of bottom plates (1) are connected by staggered sliding. The top of the outermost ends of the two groups of bottom plates (1) are provided with telescopic columns (3). The inner side of the telescopic columns (3) is provided with a clamping assembly (4). The clamping assembly (4) comprises a second telescopic plate (41). The storage end and the extension end of the second telescopic plate (41) are respectively installed at the bottom and the top of the telescopic column (3). The inner side of the storage end and the extension end of the second telescopic plate (41) is provided with a clamp (42). A calibration plate body (2) is clamped and installed in the clamp (42) of the second telescopic plate (41) of the group; a steering assembly (5) is provided at the connection between the second telescopic plate (41) and the telescopic column (3); the steering assembly (5) comprises a slide frame (51); a slider (53) is slidably connected inside the slide frame (51); the second telescopic plate (41) is connected to the slider (53); a base (14) is provided at the bottom of the telescopic column (3), and a pulley (15) is installed at the bottom of the base (14).

2. A visual calibration plate device according to claim 1, characterized in that: The clamping assembly (4) further comprises a collar (43), the collar (43) being slidably sleeved on the surface of the receiving end of the telescopic column (3), a fixing ring (44) being fixed to the extended end of the telescopic column (3), and the collar (43) and the fixing ring (44) being fixedly connected to the sliding frame (51) on one side facing the second telescopic plate (41).

3. A visual calibration plate device according to claim 2, characterized in that: The outer end of the collar (43) and the receiving end of the telescopic column (3) are both plugged with locking bolts (45), and the position of the collar (43) and the length of the telescopic column (3) are fixed by the locking bolts (45).

4. A visual calibration plate device according to claim 3, characterized in that: The steering assembly (5) further comprises a screw rod (52), the screw rod (52) being rotatably mounted inside the sliding frame (51) outside the fixing ring (44) and the sleeve ring (43) via a bearing, and the sliding block (53) being threadedly sleeved on the surface of the screw rod (52).

5. A visual calibration plate device according to claim 4, characterized in that: The outer side of the slider (53) is rotatably connected to a third telescopic plate (54) via a rotating shaft, and the other end of the third telescopic plate (54) is rotatably connected to the extension end and the storage end of the second telescopic plate (41) via the rotating shaft.

6. A visual calibration plate device according to claim 1, characterized in that: A mounting plate (31) is fixed on the top of the base (14), and the bottom of the telescopic column (3) is fixed on the mounting plate (31), and the telescopic columns (3) on the tops of the two mounting plates (31) are on the same straight line.

7. A visual calibration plate device according to claim 6, characterized in that: A connecting plate (11) is provided at the middle position of the bottom of the calibration plate body (2), and one end of the connecting plate (11) is fixed on the bottom plate (1), and the other end of the connecting plate (11) is in sliding contact with another group of bottom plates (1). A rotating knob (12) is rotatably mounted on the top of the connecting plate (11), and two groups of first telescopic plates (13) are mounted at the bottom of the rotating knob (12), and the other end of the first telescopic plate (13) is rotatably connected to the mounting plate (31) via a rotating shaft.

8. A visual calibration plate device according to claim 7, characterized in that: An elastic rubber layer is provided on the surface of the base (14) adjacent to the bottom plate (1).

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