CN218103323U - Vehicle-mounted camera calibration test bench - Google Patents
Vehicle-mounted camera calibration test bench Download PDFInfo
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- CN218103323U CN218103323U CN202222096711.6U CN202222096711U CN218103323U CN 218103323 U CN218103323 U CN 218103323U CN 202222096711 U CN202222096711 U CN 202222096711U CN 218103323 U CN218103323 U CN 218103323U
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Abstract
The embodiment of the application provides a vehicle-mounted camera calibration test bed, including test platform, calibration device and positioner, calibration device movably sets up on test platform, positioner can directly use the central point of front wheel centering mechanism and/or rear wheel centering mechanism on the test platform as the initial point, fix a position every calibration device's demarcation position respectively along the width direction and the length direction of vehicle, make calibration device can move to predetermined demarcation position fast, accurately, calibration device's location efficiency and positioning accuracy have been improved, also make test platform can satisfy the demarcation test demand of different motorcycle types simultaneously.
Description
Technical Field
The utility model relates to a vehicle detection technology field, concretely relates to test bench is decided to on-vehicle camera.
Background
Vehicle-mounted cameras are increasingly being mounted on autonomous vehicles as an essential part of the autonomous vehicles. According to the different function needs of ADAS and mounted position, on-vehicle camera includes diversified camera such as forward-looking, look around, back vision, side looking. The vehicle-mounted camera can acquire all images around the vehicle body and display the images to the driver in a 3D panoramic vision mode. Because the installation error produced when installing the camera can influence the quality of panoramic picture, therefore must mark, calibrate vehicle-mounted camera before the vehicle rolls off the production line.
The calibration places built by the testing mechanism are generally required to be adapted to different vehicle types, so that the positions of the calibration devices are often required to be adjusted, at present, the calibration positions of all the calibration devices are determined by mostly adopting a tape measure and an infrared level meter, and the positioning mode has low efficiency and low repeated positioning precision.
Therefore, it is necessary to develop a calibration testing table for a vehicle-mounted camera to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a test bench is decided to on-vehicle camera to solve calibration device positioning efficiency and the lower technical problem of positioning accuracy.
The embodiment of the utility model provides a pair of vehicle-mounted camera marks test bench, include:
the test platform is limited with a parking area, and the parking area is provided with a front wheel-to-center mechanism corresponding to the position of a front axle of the vehicle and a rear wheel-to-center mechanism corresponding to the position of a rear axle of the vehicle;
the calibration devices are movably arranged on the periphery of the parking area and used for calibrating and calibrating the vehicle-mounted camera; and
the positioning device is used for positioning the calibration device so that the calibration device can move to a preset calibration position;
defining the width direction of the vehicle as an X-axis direction, the length direction of the vehicle as a Y-axis direction, and the positioning device is configured to position the calibration position of each calibration device along the X-axis direction and the Y-axis direction respectively by taking the central point of the front wheel centering mechanism and/or the rear wheel centering mechanism as an origin position.
Optionally, the positioning device comprises a zero position disc, a scale plate, a pore plate and a mounting plate; the zero disc is mounted to the front wheel centering mechanism and/or the rear wheel centering mechanism, and the center of the zero disc and the origin are concentrically arranged; the at least two scale plates are respectively arranged on the zero position disc along the X-axis direction and the Y-axis direction, and the scale plates are provided with scales which take the original position as a starting point and extend along the length direction of the scale plates; the calibration plate is slidably sleeved with a positioning sliding block, the mounting plates are detachably mounted on the test platform, and positioning grooves matched with the positioning sliding blocks are formed in the mounting plates; the hole plates are mounted on the mounting plate, and the length direction of the hole plates is perpendicular to the length direction of the adjacent scale plates; the hole plate is provided with a plurality of groups of positioning pin holes arrayed along the length direction of the hole plate, the mounting plate is detachably connected with the hole plate through the positioning pin holes, and the calibration device is detachably mounted on the mounting plate.
Optionally, an origin pin hole concentrically arranged with the origin is formed in the center of the zero disc, four first pin holes are symmetrically formed in the periphery of the origin pin hole, and the four first pin holes are equidistantly distributed in the X-axis direction and the Y-axis direction of the origin pin hole respectively; and a second pin hole corresponding to the origin pin hole and a third pin hole corresponding to the first pin hole are formed in the starting point end of the scale plate.
Optionally, the positioning sliding block comprises a sliding sleeve sleeved on the scale plate and a positioning plate fixed at the bottom of the sliding sleeve, and the positioning groove is matched with the positioning plate.
Optionally, one side of the positioning plate, which faces away from the mounting plate, is provided with a supporting roller.
Optionally, a fourth pin hole for mounting the calibration device, a fifth pin hole for connecting the hole plate, and a fixing hole for connecting the test platform are formed in the mounting plate; and a plurality of groups of the fifth pin holes are arranged and correspond to the positioning pin holes.
Optionally, the bottom of the calibration device is provided with a roller, a foot cup and a plug pin shaft, and the plug pin shaft is matched with the fourth pin hole.
Optionally, the positioning device further comprises an infrared level meter, and the zero position disc and the mounting plate are both provided with taper holes for mounting the infrared level meter.
Optionally, the number of the zero disks is two, and the two zero disks are respectively mounted to the front wheel centering mechanism and the rear wheel centering mechanism.
Compared with the prior art, the utility model discloses following beneficial effect has:
the testing platform is provided with the positioning device, the positioning device can directly use the central point of the front wheel centering mechanism and/or the rear wheel centering mechanism on the testing platform as an original point, and positions the calibration position of each calibration device along the X-axis direction and the Y-axis direction (namely the width direction and the length direction of a vehicle), so that the calibration devices can be quickly and accurately moved to the preset calibration position, the positioning efficiency and the positioning precision of the calibration devices are improved, and meanwhile, the testing platform can meet the calibration testing requirements of different vehicle types.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a zero tray in an embodiment of the present invention;
fig. 3 is a schematic view of an installation structure of a scale plate in an embodiment of the present invention;
fig. 4 is a schematic structural view of a positioning slider in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mounting plate in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of the calibration device in the embodiment of the present invention;
the figures in the drawings represent:
1. a test platform; 11. a front wheel centering mechanism; 12. a rear wheel centering mechanism;
2. a calibration device; 21. a roller; 22. a foot cup; 23. plugging and pulling the pin shaft;
3. a zero-bit disc; 31. an origin pin hole; 32. a first pin hole; 33. a taper hole;
4. a scale plate; 41. a scale; 42. a second pin hole; 43. a third pin hole;
5. an orifice plate; 51. a positioning pin hole;
6. mounting a plate; 61. positioning a groove; 62. a fourth pin hole; 63. a fifth pin hole; 64. a fixing hole;
7. positioning the sliding block; 71. a sliding sleeve; 72. positioning a plate; 73. supporting the rollers;
8. an infrared level gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention. Furthermore, it is to be understood that the description herein of specific embodiments is for purposes of illustration and explanation only and is not intended to limit the present disclosure. In the present invention, when not described to the contrary, the use of directional terms such as "front" and "rear" generally means the front and rear of the device in actual use or operation, specifically, the direction of the drawing in the drawings; additionally, for the convenience of description, the utility model discloses define the width direction of vehicle as the X axle direction, the length direction of vehicle is defined as the Y axle direction.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," etc. may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Please refer to fig. 1, an embodiment of the present invention provides a calibration test table for a vehicle-mounted camera, which includes a test platform 1 and a calibration device 2 disposed on the test platform 1. A parking area is limited on the test platform 1 and is provided with a front wheel centering mechanism 11 corresponding to the position of a front shaft of the vehicle and a rear wheel centering mechanism 12 corresponding to the position of a rear shaft of the vehicle, and the front wheel centering mechanism 11 and the rear wheel centering mechanism 12 can assist in parking, so that the vehicle can be parked at a specific position quickly and accurately, and the test is convenient. The conventional front wheel centering mechanism 11 and the rear wheel centering mechanism 12 usually include a push rod assembly and a V-shaped arranged roller assembly, the roller assembly can assist in completing the position adjustment of the vehicle in the front-rear direction (i.e., the illustrated Y-axis direction), and the push rod assembly can realize the centering and positioning of the vehicle in the left-right direction (i.e., the illustrated X-axis direction), so that the center line of the vehicle coincides with the center points of the front wheel centering mechanism 11 and the rear wheel centering mechanism 12. Since the centering mechanism is a conventional technical means for adjusting the parking position of the vehicle in the field, it is not described herein in detail.
The plurality of calibration devices 2 are arranged on the periphery of the parking area and used for calibrating and calibrating the vehicle-mounted camera. In order to enable the testing platform 1 to perform calibration testing on different vehicle types, in this embodiment, the calibration device 2 is configured to be movable, and a positioning device is configured to position the calibration device 2, so that the calibration device 2 can be quickly and accurately moved to a preset calibration position. The positioning device can directly and respectively position the calibration position of each calibration device 2 by taking the central point of the front wheel centering mechanism 11 and/or the rear wheel centering mechanism 12 as the original point along the X-axis direction and the Y-axis direction (namely the width direction and the length direction of the vehicle), thereby effectively ensuring the positioning efficiency and the positioning precision of the calibration devices 2.
Specifically, the positioning device in this embodiment includes a zero position disk 3, a scale plate 4, an orifice plate 5, and a mounting plate 6. The center of the zero position disk 3 is concentrically arranged with the center point of the front wheel centering mechanism 11 and/or the rear wheel centering mechanism 12, so that the positioning device can use the center of the zero position disk 3 as the original position of the whole calibration coordinate. It can be understood that the zero-position disk 3 can be installed to the front wheel centering mechanism 11 or the rear wheel centering mechanism 12, and a calibration coordinate is established by taking the central point of the front wheel centering mechanism 11 or the rear wheel centering mechanism 12 as an origin position; it is also possible to install to the front-wheel centering mechanism 11 and the rear-wheel centering mechanism 12 with the center point of the front-wheel centering mechanism 11 and the rear-wheel centering mechanism 12 as the origin point. In consideration of the fact that the vehicle has a large span in the Y-axis direction, in order to prevent the positioning distance in the Y-axis direction from being excessively large and affecting the positioning accuracy, the number of the zero disks 3 is two in the present embodiment, and the two zero disks 3 are respectively mounted to the front wheel centering mechanism 11 and the rear wheel centering mechanism 12.
A plurality of scale plate 4 is installed to zero-bit disc 3 along X axle direction and Y axle direction respectively, is equipped with on the scale plate 4 and uses the original point position as the starting point and along scale plate 4 length direction extension's scale 41, can measure the distance of X axle direction and Y axle direction respectively. Further, as shown in fig. 2 and 3, an origin pin hole 31 concentrically arranged with the origin is provided in the center of the zero position disk 3 of the present embodiment, four first pin holes 32 are symmetrically provided on the periphery of the origin pin hole 31, and the four first pin holes 32 are respectively distributed at equal intervals in the X-axis direction and the Y-axis direction of the origin pin hole 31. The starting point end of the scale plate 4 is provided with a second pin hole 42 corresponding to the origin pin hole 31 and a third pin hole 43 corresponding to the first pin hole 32, and the second pin hole 42 and the third pin hole 43 are matched with the origin pin hole 31 and the four first pin holes 32, so that the scale plate 4 can be detachably mounted to the zero-position plate 3 along the X-axis direction and the Y-axis direction respectively.
As shown in fig. 4, the scale plate 4 is further slidably sleeved with a positioning slider 7, the plurality of mounting plates 6 are detachably mounted on the testing platform 1, and positioning grooves 61 matched with the positioning slider 7 are formed in the mounting plates 6. Further, the positioning slider 7 in this embodiment includes a sliding sleeve 71 slidably sleeved on the scale plate 4 and a positioning plate 72 fixed at the bottom of the sliding sleeve 71, and the positioning groove 61 is matched with the positioning plate 72. After the positioning slide block 7 is moved to the required coordinate along the scale plate 4, the positioning groove 61 on the mounting plate 6 is clamped with the positioning plate 72, and then the mounting plate 6 is fixed to the test platform 1, so that the mounting plate 6 can be positioned. A supporting roller 73 can be installed on one side, away from the installation plate 6, of the positioning plate 72, the positioning slider 7 can be conveniently moved while being supported, and the measuring accuracy is prevented from being influenced by the bending of the scale plate 4.
The plurality of pore plates 5 are respectively installed to the installation plate 6 along the X-axis direction and the Y-axis direction, and a plurality of groups of positioning pin holes 51 arranged in an array along the length direction of the pore plates 5 are arranged on the pore plates 5 (the distance between the positioning pin holes 51 should meet all the distance requirements of the calibration device 2). The mounting plate 6 can be detachably connected with the orifice plate 5 through the positioning pin hole 51, and the calibration device 2 can be detachably mounted on the mounting plate 6. Further, as shown in fig. 5, the mounting plate 6 in this embodiment is provided with a fourth pin hole 62 for mounting the calibration device 2, a fifth pin hole 63 for connecting the orifice plate 5, and a fixing hole 64 for connecting the testing platform 1, wherein the fifth pin hole 63 is provided with a plurality of sets corresponding to the positioning pin holes 51. As shown in fig. 6, the bottom of the calibration device 2 is provided with a roller 21, a foot cup 22 and a plug pin 23, wherein the plug pin 23 is matched with the fourth pin hole 62. After the calibration device 2 is moved to the upper side of the mounting plate 6, the plug pin shaft 23 is inserted into the fourth pin hole 62, so that the calibration device 2 can be positioned, the foot cup 22 is used for assisting the bottom of the calibration device 2 to level, and the calibration device 2 is further prevented from moving or shaking.
The length direction of the orifice plate 5 should be perpendicular to the length direction of the adjacent scale plate 4, specifically, as shown in fig. 1, after the X-axis coordinate of the calibration device 2 is determined by using the scale plate 4 arranged along the X-axis direction, a mounting plate 6 is fixed at the coordinate (X, 0), and then the orifice plate 5 is mounted to the mounting plate 6 along the Y-axis direction; and then, determining the Y-axis coordinate of the calibration device 2 by using the positioning pin hole 51 on the orifice plate 5, installing another installation plate 6 at the coordinate (x, Y), wherein the coordinate (x, Y) of the installation plate 6 is the preset calibration position, and installing the calibration device 2 to the installation plate 6 to complete the positioning of the calibration device 2. Similarly, if the Y-axis coordinate (0,y) of the calibration device 2 is determined by the scale plate 4 disposed in the Y-axis direction, the aperture plate 5 adjacent to the scale plate 4 should be disposed in the X-axis direction to determine the X-axis coordinate (X, Y) of the calibration device 2 by the aperture plate 5.
As an optional implementation manner, the positioning device in this embodiment further includes an infrared level 8, and both the zero-position disk 3 and the mounting plate 6 are provided with tapered holes 33 for mounting the infrared level 8. Further calibration may be performed using the infrared level 8 to confirm that the mounting plate 6 is aligned in the X-axis and Y-axis directions; the taper hole 33 is convenient for positioning the infrared level gauge 8, and the checking accuracy of the infrared level gauge 8 is ensured.
The principle and the implementation of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understand the technical solution and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its various embodiments.
Claims (9)
1. A vehicle-mounted camera calibration test stand, comprising:
the test platform is limited with a parking area, and the parking area is provided with a front wheel-to-center mechanism corresponding to the position of a front axle of the vehicle and a rear wheel-to-center mechanism corresponding to the position of a rear axle of the vehicle;
the calibration devices are movably arranged on the periphery of the parking area and used for calibrating and calibrating the vehicle-mounted camera; and
the positioning device is used for positioning the calibration device so that the calibration device can move to a preset calibration position;
defining the width direction of the vehicle as an X-axis direction, the length direction of the vehicle as a Y-axis direction, and the positioning device is configured to position the calibration position of each calibration device along the X-axis direction and the Y-axis direction respectively by taking the central point of the front wheel centering mechanism and/or the rear wheel centering mechanism as an origin position.
2. A vehicle-mounted camera calibration test stand according to claim 1, characterized in that: the positioning device comprises a zero position disc, a scale plate, a pore plate and an installation plate; the zero disc is mounted to the front wheel centering mechanism and/or the rear wheel centering mechanism, and the center of the zero disc and the origin are concentrically arranged; the at least two scale plates are respectively arranged on the zero position disc along the X-axis direction and the Y-axis direction, and the scale plates are provided with scales which take the original position as a starting point and extend along the length direction of the scale plates; the calibration plate is slidably sleeved with a positioning sliding block, a plurality of mounting plates are detachably mounted on the test platform, and positioning grooves matched with the positioning sliding blocks are formed in the mounting plates; the plurality of pore plates are arranged on the installation plate, and the length direction of the pore plates is vertical to the length direction of the adjacent scale plates; the hole plate is provided with a plurality of groups of positioning pin holes arrayed along the length direction of the hole plate, the mounting plate is detachably connected with the hole plate through the positioning pin holes, and the calibration device is detachably mounted on the mounting plate.
3. A vehicle camera calibration test stand according to claim 2, wherein: an original point pin hole which is concentric with the original point is formed in the center of the zero disc, four first pin holes are symmetrically formed in the periphery of the original point pin hole, and the four first pin holes are distributed in the X-axis direction and the Y-axis direction of the original point pin hole at equal intervals; and a second pin hole corresponding to the original point pin hole and a third pin hole corresponding to the first pin hole are arranged at the starting point end of the scale plate.
4. A vehicle camera calibration test stand according to claim 2, wherein: the positioning sliding block comprises a sliding sleeve which is sleeved on the scale plate and a positioning plate which is fixed at the bottom of the sliding sleeve, and the positioning groove is matched with the positioning plate.
5. A vehicle camera calibration test stand according to claim 4, wherein: and one side of the positioning plate, which deviates from the mounting plate, is provided with a supporting roller.
6. A vehicle camera calibration test stand according to claim 2, wherein: the mounting plate is provided with a fourth pin hole for mounting the calibration device, a fifth pin hole for connecting the hole plate and a fixing hole for connecting the test platform; and a plurality of groups of the fifth pin holes are arranged and correspond to the positioning pin holes.
7. A vehicle camera calibration test stand according to claim 6, wherein: the bottom of the calibration device is provided with a roller, a foot cup and a plug pin shaft, and the plug pin shaft is matched with the fourth pin hole.
8. A vehicle camera calibration test stand according to any one of claims 2-7, characterized by: the positioning device further comprises an infrared level meter, and the zero disc and the mounting plate are provided with taper holes for mounting the infrared level meter.
9. A vehicle camera calibration test stand according to claim 8, wherein: the number of the zero position discs is two, and the two zero position discs are respectively installed on the front wheel centering mechanism and the rear wheel centering mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222096711.6U CN218103323U (en) | 2022-08-10 | 2022-08-10 | Vehicle-mounted camera calibration test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222096711.6U CN218103323U (en) | 2022-08-10 | 2022-08-10 | Vehicle-mounted camera calibration test bench |
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| Publication Number | Publication Date |
|---|---|
| CN218103323U true CN218103323U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222096711.6U Active CN218103323U (en) | 2022-08-10 | 2022-08-10 | Vehicle-mounted camera calibration test bench |
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| CN (1) | CN218103323U (en) |
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2022
- 2022-08-10 CN CN202222096711.6U patent/CN218103323U/en active Active
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