CN113607050A - Camera test tool - Google Patents
Camera test tool Download PDFInfo
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- CN113607050A CN113607050A CN202110794896.5A CN202110794896A CN113607050A CN 113607050 A CN113607050 A CN 113607050A CN 202110794896 A CN202110794896 A CN 202110794896A CN 113607050 A CN113607050 A CN 113607050A
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- camera
- gauge block
- fixing seat
- test tool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- General Physics & Mathematics (AREA)
- Accessories Of Cameras (AREA)
Abstract
The invention relates to a camera test tool, which comprises a camera fixing seat (10), a gauge block (20) and a translation platform (30), wherein the camera fixing seat (10) comprises a camera mounting surface (11), a side surface (12) and a front end surface (13); the top of the camera fixing seat (10) is provided with a translation table (30). The translation platform (30) is used for adjusting the position of the gauge block (20) in the measuring process, the precision of the 3D camera can be further judged by adopting the detection tool through measuring the precision of the gauge block when other parts are measured, the precision of the 3D camera can be adjusted only by measuring the gauge block during working, and therefore the required precision of the 3D camera can be guaranteed.
Description
Technical Field
The invention relates to a camera testing tool, which is particularly suitable for an industrial camera.
Background
With the development of society, people continuously demand high quality and high stability of electronic products, and detection equipment is required to continuously improve the detection precision level of the detection equipment so as to control each key size in the production of the products. In the prior art, a 3D camera is adopted to directly measure the precision of the size precision of parts, and the error is large.
For example, chinese utility model patent publication No. CN205679195UA discloses a motion camera with lens stabilization function, which includes a lens and an image sensor disposed behind the lens, the image sensor is electrically connected to an image circuit, and the motion camera further includes two motors, a magnetic encoder and a motor control circuit, which are orthogonally distributed in space, the two motors are an X-axis motor for controlling pitching motion and a Y-axis motor for controlling rolling motion, respectively, and a rotor output shaft of the X-axis motor is connected to a stator of the Y-axis motor; the attitude plate is connected with the side surface of the image sensor and is connected with a stator of the Y-axis motor; the image sensor is connected with a rotor of the Y-axis motor; the number of the magnetic encoders is two. The motion camera can meet the shooting requirements of users in motion activities, and can shoot good photos and videos without keeping the camera still or keeping the camera moving at the same speed with a moving body all the time. However, the camera is mainly controlled by a sensor, and the structure of the camera is complex; the motor and the battery box are arranged below the lens, so that the whole size is large and the use is inconvenient.
For example, the utility model discloses a china's utility model patent that the bulletin number is CN 208703458U again, it discloses a 3D camera check out test set, including mounting platform, locate the support of mounting platform upside, hang and be used for carrying out the 3D camera that detects to product outward appearance and size on locating the support, be used for loading the location to wait to detect the product microscope carrier, locate the mounting platform upside and be used for driving waiting to detect the product microscope carrier on the product microscope carrier, make the product of waiting to detect on the product microscope carrier with the mobile positioning mechanism that 3D camera aimed at and the rotatory positioning mechanism who drives the XY plane internal rotation and the location of product microscope carrier, the mounting platform downside is equipped with the air supporting bumper shock absorber. However, the detection device is only used for detecting the precision of the product to be detected, and the precision of the camera cannot be guaranteed.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a camera testing tool, which solves the problems that the accuracy of a camera cannot be detected and the requirements of customers cannot be met at present.
In order to achieve the above purpose, the invention adopts the following scheme:
a camera test tool comprises a camera fixing seat, a measuring block and a translation table, wherein the camera fixing seat comprises a camera mounting surface, a side surface and a front end surface; the top of camera fixing base is equipped with the translation platform. The translation platform is used for the adjustment of gage block position in measurement process, adopts this detection frock through the precision of measuring the gage block, and then judges the precision that 3D camera can reach when measuring other parts, and the during operation only need through measure the gage block after adjust the precision of 3D camera can to guaranteed that the 3D camera that dispatches from the factory can both reach the precision that needs.
In any one of the above schemes, preferably, the translation stage includes a gauge block pressing plate, an adjusting screw, a limiting plate and a gauge block fixing seat.
In any of the above solutions, preferably, the gauge block is located below the gauge block pressing plate, and the gauge block pressing plate adjusts the gauge block on the Z axis, so that the camera can more accurately measure the dimension of the gauge block in the height direction.
In any of the above aspects, preferably, the gauge block is fixed on the gauge block fixing seat.
In any of the above schemes, preferably, the adjusting screws are provided in two groups, one group is located on the gauge block fixing seat, and the other group is located on the right side of the translation table. Adjusting the gauge block in the Y-axis direction by adjusting an adjusting screw on the gauge block fixing seat; the gauge block is adjusted in the X-axis direction by adjusting the adjusting screw on the translation table, so that the clamping and fixing of the gauge block on the horizontal plane are guaranteed, and the measured size is more accurate.
In any of the above aspects, preferably, the limiting plate is located below the gauge block. The limiting plate is arranged to ensure that the translation position of the translation table on the horizontal plane is accurate.
In any of the above aspects, preferably, the side surface of the translation table is attached to the side surface of the limit plate.
In any one of the above aspects, preferably, the flatness of the camera mounting surface is 0.02 mm; the flatness of the limiting surface of the side surface is 0.02 mm; the flatness of the limiting surface of the front end surface is 0.02 mm.
In any of the above schemes, preferably, the camera fixing seat is a hollow structural member, so that the operation of fixing and mounting the bottom of the camera is facilitated, and the weight of the whole tool is reduced.
In any of the above schemes, preferably, one or two cameras are installed on the camera fixing base.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a camera test tool according to the present invention.
Fig. 2 is a schematic structural view of the camera test tool according to the present invention, with the gauge block pressure plate removed, according to the preferred embodiment shown in fig. 1.
Fig. 3 is a schematic structural diagram of a camera fixing base in the preferred embodiment shown in fig. 1 of the camera testing tool according to the present invention.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. The following describes a camera test fixture according to an embodiment of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a structure of a preferred embodiment of the camera test tool according to the present invention is schematically illustrated. The camera test tool comprises a camera fixing seat 10, a measuring block 20 and a translation table 30, wherein the camera fixing seat 10 comprises a camera mounting surface 11, a side surface 12 and a front end surface 13; the top of the camera fixing base 10 is provided with a translation stage 30. The translation table 30 is used for adjusting the position of the gauge block 20 in the measuring process, the precision of the measuring gauge block is measured by the detection tool, the precision of the 3D camera which can be measured by other parts is further judged, the precision of the 3D camera can be adjusted only by measuring the gauge block during working, and therefore the required precision of the 3D camera which leaves a factory can be achieved.
In the present embodiment, the flatness of the camera mounting surface 11 is 0.02 mm; the flatness of the limiting surface of the side surface 12 is 0.02 mm; the flatness of the stopper face of the front end face 13 is 0.02 mm.
In this embodiment, the camera fixing base 10 is a hollow structure, and leaves a space to avoid the knob at the bottom of the camera, and leaves an operation space, and in addition, the weight of the whole tool is also reduced.
In the present embodiment, one or two cameras 40 are installed in the camera fixing base 10.
The camera mounting surface 11 deflects, the parallelism of two mounting surfaces of the camera on the base is set to be 0.05mm, and the calculation result is that:
the deviation of the two surfaces in the rotating direction around the X axis is that arctan (0.05/120) is approximately equal to 0.024 degrees;
the deviation of the two surfaces in the rotating direction around the Y axis does not influence the result and is not calculated;
the deviation of the two faces in the direction of rotation about the Z axis is arctan (0.05/120) ≈ 0.024 deg..
In the present embodiment, the translation stage 30 includes a gauge block pressing plate 31, an adjusting screw 32, and a limit plate 33.
In this embodiment, the mounting surface of the translation stage has a flatness of 0.02mm, a mutual perpendicularity of 0.03mm, and XYZ axes of the translation stage have dimensions of 80mm, and 40mm, respectively.
The planeness of three mounting surfaces of the camera is designed to be 0.02mm, the mutual perpendicularity is designed to be 0.03mm, the XYZ axial dimensions of the camera are respectively about 120mm, 120mm and 50mm, and the three-degree-of-freedom deviation of the camera is calculated as follows: the flatness of a camera mounting surface is 0.02 mm; the planeness of the front end surface limiting surface is 0.02 mm; the flatness of the side limiting surface is 0.02 mm.
The three-degree-of-freedom deviations of the upper end surface of the translation table relative to the lower end surface are respectively as follows:
In the present embodiment, the gauge block 20 is located below the gauge block pressing plate 31, and the gauge block pressing plate 31 adjusts the gauge block 20 in the Z-axis, so that the camera can more accurately measure the dimension of the gauge block 20 in the height direction.
In this embodiment, the gauge block 20 is fixed to the gauge block fixing base 34.
In the present embodiment, the limiting plate 33 is located below the gauge block 20. A limit plate 33 is provided to ensure that the translation stage 30 is translated in a precise position in the horizontal plane.
The gauge block 20 is fixed on a gauge block mounting plate, the planeness of each matching surface of the mounting plate is 0.02mm, the verticality is 0.03mm, the XYZ dimensions are 60mm, 40mm and 30mm respectively, the mounting precision of the gauge block cannot be influenced by the rotation deviation of the gauge block mounting plate around the XY axis, the deviation is not calculated, and the rotation deviation of the other degree of freedom is calculated as follows: the deviation of the rotation of the gauge block mounting plate around the Z axis is arctan (0.02/60) which is approximately equal to 0.019 degrees.
The gauge block 20 is a standard gauge block, and the flatness of the upper plane is 0.1um, the flatness of the front end face is 0.04mm, the flatness of the bottom face is 0.04mm, and the verticality of each face is 0.05mm by checking a manual.
When the gauge block is installed, the mounting plate is fastened after the front end face is corrected by the limiting tool, and the three-degree-of-freedom rotation deviation of the mounting position is calculated as follows:
the rotation deviation arctan (0.05/35) of the gauge block around the X axis is approximately equal to 0.08 degrees; the rotational deviation of the gauge block around the Y axis is negligible; the rotation deviation of the gauge block around the Z axis is related to the parallelism of the scale mark and the bottom surface, the parallelism is 0.02mm, and the deviation is that arctan (0.02/9) is approximately equal to 0.127 degrees.
In this embodiment, the gauge block 35 is located on the camera 40.
Gauge block to camera limit deviation calculation
In this embodiment, the lateral surface of the translation stage 30 is attached to the lateral surface of the limit plate 33, so as to ensure the accurate position of translation.
In this embodiment, the flatness of the limiting surface of the side surface 12 is 0.02 mm; the flatness of the stopper face of the front end face 13 is 0.02mm (see fig. 3).
In the present embodiment, the translation stage 30 includes a gauge block pressing plate 31, an adjusting screw 32, a limiting plate 33, and a gauge block fixing seat 34.
In this embodiment, the adjusting screws 32 are provided in two sets, one set is located on the gauge block fixing seat 34, and the other set is located on the right side of the translation stage 30. As can be seen from fig. 2, the gauge block 20 is adjusted in the Y-axis direction by adjusting the adjusting screw 32 on the gauge block fixing seat 34; the gauge block 20 is adjusted in the X-axis direction by adjusting the adjusting screw 32 on the translation table 30, so that the clamping and fixing of the gauge block 20 on the horizontal plane are ensured, and the measured size is more accurate.
And (3) rotationally adjusting the gauge block around the Z axis:
four adjusting screws are arranged on one side of the gauge block, and the purpose of adjusting the deflection precision of the gauge block around the z axis can be achieved by adjusting the screwing-in depth of the upper and lower screws. When the two screws on the upper side are screwed deeper than the two screws on the lower side, the gauge block rotates clockwise around the Z axis, and conversely, the gauge block rotates anticlockwise around the Z axis. The other side of the gauge block is simultaneously filled with copper foil of a corresponding thickness to deflect the gauge block by a desired angle.
The gauge block rotates around the X axis to be adjusted:
the fastening screws are screwed into the three threaded holes, the effect of adjusting the deflection angle of the gauge block around the X axis can be achieved by adjusting the screwing depth of the upper screw and the lower screw, and when the fastening screws on the upper side are screwed deeper than the screwing depth on the lower side, the gauge block rotates anticlockwise around the X axis, otherwise, the gauge block rotates clockwise.
And (3) rotationally adjusting the gauge block around the Y axis:
through the screw-in degree of depth of two holding screws about the adjustment, can reach the effect that the gage block is rotatory around the Y axle, when the upside was twisted deeply than the downside, the gage block was rotatory around the Y axle clockwise, otherwise, anticlockwise rotation.
The following results are obtained by calculation:
the calculated rotation deviation of the whole camera around the X axis is arctan (0.03/120) ≈ 0.01 deg.
The calculated rotation deviation of the whole camera around the Y axis is arctan (0.03/120) ≈ 0.01 deg.
The calculated rotation deviation of the whole camera around the Z axis is arctan (0.03/120) ≈ 0.01 deg.
It will be understood by those skilled in the art that the camera test tool of the present invention includes any combination of the components described herein. These combinations are not described in detail herein for the sake of brevity and clarity, but the scope of the invention, which is defined by any combination of the parts constructed in this specification, will become apparent after review of this specification.
Claims (10)
1. The utility model provides a camera test fixture, includes camera fixing base (10), gage block (20) and translation platform (30), its characterized in that: the camera fixing seat (10) comprises a camera mounting surface (11), a side surface (12) and a front end surface (13); the top of the camera fixing seat (10) is provided with a translation table (30).
2. The camera test tool of claim 1, wherein: the translation platform (30) comprises a gauge block pressing plate (31), an adjusting screw (32), a limiting plate (33) and a gauge block fixing seat (34).
3. The camera test tool of claim 1, wherein: the gauge block (20) is positioned below the gauge block pressing plate (31).
4. The camera test tool of claim 1 or 3, wherein: the gauge block (20) is fixed on the gauge block fixing seat (34).
5. The camera test tool of claim 2, wherein: the adjusting screws (32) are divided into two groups, wherein one group is positioned on the gauge block fixing seat (34), and the other group is positioned on the right side of the translation table 30.
6. The camera test tool of claim 2, wherein: the limiting plate (33) is positioned below the gauge block (20).
7. The camera test tool of claim 1 or 2, wherein: the side surface of the translation table (30) is attached to the side surface of the limiting plate (33).
8. The camera test tool of claim 1, wherein: the flatness of the camera mounting surface (11) is 0.02 mm; the flatness of the limiting surface of the side surface (12) is 0.02 mm; the flatness of the limiting surface of the front end surface (13) is 0.02 mm.
9. The camera test tool of claim 1, wherein: the camera fixing seat (10) is a hollow structural member.
10. The camera test tool of claim 1 or 9, wherein: one or two cameras (40) are installed on the camera fixing seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110794896.5A CN113607050A (en) | 2021-07-14 | 2021-07-14 | Camera test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110794896.5A CN113607050A (en) | 2021-07-14 | 2021-07-14 | Camera test tool |
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| Publication Number | Publication Date |
|---|---|
| CN113607050A true CN113607050A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110794896.5A Pending CN113607050A (en) | 2021-07-14 | 2021-07-14 | Camera test tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116518849A (en) * | 2023-06-20 | 2023-08-01 | 常州市新创智能科技有限公司 | Device and method for accurately positioning and detecting depth of aluminum alloy vehicle body interface |
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| CN109934875A (en) * | 2017-12-18 | 2019-06-25 | 长光华大基因测序设备（长春）有限公司 | Camera calibration peace field correction apparatus, camera calibration method and method for correcting flat field |
| CN217687101U (en) * | 2022-05-09 | 2022-10-28 | 无锡华信石油机械有限公司 | Tool joint check out test set |
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2021
- 2021-07-14 CN CN202110794896.5A patent/CN113607050A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0558403A1 (en) * | 1992-02-28 | 1993-09-01 | Framatome | Device for monitoring the internal surface of a pipe, especially in a vapour generator |
| JP2000346637A (en) * | 1999-06-07 | 2000-12-15 | Hitachi Plant Eng & Constr Co Ltd | Method and apparatus for measuring groove shape for piping |
| CN202652427U (en) * | 2012-06-04 | 2013-01-02 | 中国民航大学 | Camera intrinsic parameter calibration device based on precision translation and rotation table |
| KR20150137475A (en) * | 2014-05-29 | 2015-12-09 | 선봉코리아 주식회사 | Laser display device for showing the location of the defective pipe |
| CN207232623U (en) * | 2017-10-17 | 2018-04-13 | 福州汇思博信息技术有限公司 | A kind of twin-lens imaging test and the frock of calibration |
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| CN208402034U (en) * | 2018-06-29 | 2019-01-18 | 东莞市海轮电子科技有限公司 | Camera mould group calibration test station |
| CN208902380U (en) * | 2018-10-30 | 2019-05-24 | 嘉兴锐视智能科技有限公司 | A kind of caliberating device applied to camera focusing calibration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116518849A (en) * | 2023-06-20 | 2023-08-01 | 常州市新创智能科技有限公司 | Device and method for accurately positioning and detecting depth of aluminum alloy vehicle body interface |
| CN116518849B (en) * | 2023-06-20 | 2023-09-08 | 常州市新创智能科技有限公司 | Device and method for accurately positioning and detecting depth of aluminum alloy vehicle body interface |
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