CN220912320U - Special fixture for vision test system of aviation position indicator - Google Patents
Special fixture for vision test system of aviation position indicator Download PDFInfo
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- CN220912320U CN220912320U CN202322948687.9U CN202322948687U CN220912320U CN 220912320 U CN220912320 U CN 220912320U CN 202322948687 U CN202322948687 U CN 202322948687U CN 220912320 U CN220912320 U CN 220912320U
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- position indicator
- indicator
- definition camera
- special fixture
- clamp base
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000012545 processing Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000036544 posture Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003702 image correction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of vision testing of aviation instruments, in particular to a special fixture for an aviation position indicator vision testing system, which comprises a fixture base used for placing a position indicator and a high-definition camera, a positioning component arranged on the fixture base and used for guaranteeing angle requirements during gesture testing of the position indicator, and a shielding component arranged on the fixture base and used for guaranteeing photographing definition of the high-definition camera, wherein the high-definition camera and the position indicator are fixed on the special fixture, and the high-definition camera synchronously moves along with the position indicator, so that detection errors caused by relative position changes between the high-definition camera and the indicator to be tested in the testing process are avoided; meanwhile, the relative positions of the high-definition camera and the position indicator are fixed, so that the position of the indicator in the acquired video picture can be ensured to be fixed, the complexity of an image processing algorithm is greatly simplified, and the operation speed and the accuracy of the algorithm are improved.
Description
Technical Field
The utility model relates to the field of vision testing of aviation instruments, in particular to a special fixture for a vision testing system of an aviation position indicator.
Background
When the pointer in the position indicator moves, if relative movement exists between the high-definition camera and the position indicator, and the relative position change and the relative movement speed change are included, the position indicator picture information acquired by the high-definition camera can be influenced necessarily, so that the reading or the detection error of pointer movement performance is caused. Therefore, a set of special integrated clamp for installing the high-definition camera and the position indicator is designed, and the high-definition camera is ensured to synchronously move along with the position indicator.
Disclosure of utility model
In order to solve the problems, the utility model provides a special fixture for an aviation position indicator vision test system.
A special fixture for aviation position indicator vision test system, including the anchor clamps base that is used for placing position indicator and high definition camera, still including setting up the locating component that is used for guaranteeing the angle requirement when position indicator gesture test on the anchor clamps base, setting up and be used for guaranteeing high definition camera and shoot the subassembly that shelters from of definition on the anchor clamps base.
The positioning assembly comprises an indicator limiting block, an indicator positioning block for fixing the position indicator on the indicator limiting block through an indicator fixing screw, a side plate I and a side plate II which are respectively arranged on two sides of the clamp base to ensure the requirement of the lateral lying posture angle of the position indicator, and an upper baffle plate which is arranged on the rear side of the clamp base to ensure the requirement of the angle when the upward lying posture of the position indicator is tested.
The first side plate and the second side plate are in 90-degree relation with the clamp base.
The rear side face of the upper baffle plate, the rear side faces of the first side plate and the second side plate and the rear side face of the clamp base are arranged on the same plane and perpendicular to the clamp base.
The clamp base is provided with a first mounting hole and a second mounting hole which are used for fixedly mounting the clamp on the buzzer in a normal posture.
And the upper baffle plate is provided with a mounting hole III for fixing the clamp on the buzzer in a upward-tilting posture.
And mounting holes IV for fixedly mounting the clamp on the buzzer in a lateral lying posture are formed in the first side plate and the second side plate.
The shielding assembly comprises a camera support, a baffle and a protective cover, wherein the camera support is arranged on a clamp base and used for installing a high-definition camera, the baffle is arranged on the clamp base and matched with the high-definition camera to block light, and the protective cover is used for protecting the camera.
The clamp base and the camera support are made of aluminum materials convenient for heat dissipation and heat conduction.
The beneficial effects of the utility model are as follows: the high-definition camera and the position indicator are fixed on a special fixture, and the high-definition camera synchronously moves along with the position indicator, so that detection errors caused by relative position change between the high-definition camera and the indicator to be tested in the test process are avoided; meanwhile, the relative positions of the high-definition camera and the position indicator are fixed, so that the position of the indicator in the acquired video picture can be ensured to be fixed, the complexity of an image processing algorithm is greatly simplified, and the operation speed and the accuracy of the algorithm are improved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic perspective view of the present utility model;
Reference numerals: 1. a clamp base; 2. a second mounting hole; 5. a mounting hole IV; 6. a third mounting hole; 12. a first mounting hole; 3. an indicator positioning block; 4. a first side plate; 7. a second side plate; 8. an upper baffle; 9. an indicator stopper; 10. an indicator set screw; 11. a position indicator; 13. a protective cover; 14. a high definition camera; 15. a camera mount; 16. and a baffle.
Detailed Description
The present utility model will be further described in the following to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand.
As shown in fig. 1, the special fixture for the visual testing system of the aviation position indicator comprises a fixture base 1 for placing the position indicator 11 and the high-definition camera 14, a positioning component arranged on the fixture base 1 and used for guaranteeing angle requirements during attitude testing of the position indicator 11, and a shielding component arranged on the fixture base 1 and used for guaranteeing photographing definition of the high-definition camera 14.
The high definition camera 14 and the measured position indicator 11 are fixed on the fixture base 1 in a clamping mode, so that the relative position and the relative distance between the high definition camera 14 and the measured position indicator are fixed and stable, and even in dynamic measurement, if: the device is arranged on the buzzer for shaking, vibration experiments and indicator overturning experiments, so that synchronous movement of the device and the buzzer can be ensured, continuous and stable picture acquired by the high-definition camera 14 can be ensured, and continuous fixing of the position of the indicator to be measured in the picture can be ensured.
The positioning assembly comprises an indicator limiting block 9, an indicator positioning block 3 for fixing a position indicator 11 on the indicator limiting block 9 through an indicator fixing screw 10, a first side plate 4 and a second side plate 7 which are respectively arranged on two sides of the clamp base 1 to ensure the requirement of the lateral lying posture angle of the position indicator 11, and an upper baffle 8 which is arranged on the rear side of the clamp base 1 and is used for ensuring the requirement of the angle when the position indicator 11 is in the upward lying posture test.
The position of the position indicator 11 ensures the installation consistency through the indicator limiting block 9.
The side plates I4 and II 7 are 90 degrees relative to the clamp base 1, when the lateral lying posture of the position indicator 11 is tested, the whole clamp is laterally laid, and the angle requirement of the lateral lying posture of the position indicator 11, namely the lateral rotation of the position indicator 11 by 90 degrees, can be ensured by utilizing the vertical relation between the side plates and the clamp base 1.
The high-definition camera 14 and the position indicator 11 are fixed on a special fixture, and the high-definition camera 14 synchronously moves along with the position indicator 11, so that detection errors caused by relative position change between the high-definition camera 14 and the indicator to be tested in the test process are avoided; meanwhile, the relative positions of the high-definition camera 14 and the position indicator 11 are fixed, so that the position of the indicator in the acquired video picture can be ensured to be fixed, the complexity of an image processing algorithm is greatly simplified, and the operation speed and the accuracy of the algorithm are improved.
The rear side of the upper baffle plate 8, the rear side of the side plate I4 and the rear side of the side plate II 7 and the rear side of the clamp base 1 are arranged on the same plane and perpendicular to the clamp base 1, and when the whole clamp comprises the position indicator 11 and the high-definition camera 14 and is placed in a mode of rotating 90 degrees along the vertical direction of the axis of the clamp base 1, the angle requirement of the position indicator 11 in the upward-tilting posture test, namely the upward-tilting of the position indicator 11, can be ensured.
The instrument placement angle of the clamp during lateral detection and vertical detection is controlled through the upper baffle 8, the first side plate 4 and the second side plate 7, the operation process can be greatly simplified during actual operation, meanwhile, the angle precision and consistency are effectively ensured, and placement errors caused by human errors are avoided.
The clamp base 1 is provided with a first mounting hole 12 for fixedly mounting the clamp on the buzzer in a normal posture, so that the clamp and the buzzer are fixedly connected.
The upper baffle plate 8 is provided with a mounting hole III 6 for fixing the clamp to the buzzer in a upward tilting posture, so that the clamp and the buzzer are fixedly connected.
The side plates I4 and II 7 are respectively provided with a mounting hole IV 5 and a mounting hole II 2 for fixedly mounting the clamp on the buzzer in a lateral lying mode, so that the clamp and the buzzer are fixedly connected.
The shielding assembly comprises a camera support 15 arranged on the clamp base 1 and used for installing the high-definition camera 14, a baffle 16 arranged on the clamp base 1 and matched with the high-definition camera 14 for blocking light, and a protective cover 13 for protecting the camera, wherein the position of the high-definition camera 14 is fixed with the camera support 15 through a locating pin, the installation consistency of the high-definition camera is guaranteed, and the camera support 15 is not only used for fixing the high-definition camera 14, but also has a heat dissipation function.
The baffle 16 is made of a white material that is not reflective and serves to prevent the formation of light spots and background reflections on the indicator surface. Because the indicator needs to be changed in different postures during detection, such as standing, side placing and the like, an indoor electric lamp is likely to be opposite to the surface of the instrument, and because the surface of the indicator is made of reflective materials such as glass and the like, light spots with uncertain and obvious positions can be formed on the image of the indicator, and the light spots can cover pointers and scale marks of the indicator in the image, so that failure or error of the detection of the indicator is caused; in addition, during the detection process of the indicator, when the scene in front of the indicator changes (such as moving of a figure, shaking, etc.), reflection light and light intensity change are formed on the surface of the indicator. These will affect the accuracy of the indicator detection and the baffle 16 will completely mask the effects, which not only greatly simplifies the subsequent image processing algorithm, but also significantly improves the accuracy of the detection and the speed of the algorithm.
The baffle 16 and the protective cover 13 completely protect the lens of the camera, and can also effectively prevent an operator from randomly adjusting the lens, so that parameters of aperture and focal length of the lens are changed, and the definition of the acquired image is affected.
The protective cover 13 of the camera is used to protect the camera lens while preventing supplementary modifications of the camera aperture, focal length class parameters.
The camera support 15 is used for fixing the high-definition camera 14, ensuring that the camera support is coaxial and spaced from a measured instrument, thus ensuring consistency of image acquisition during instrument replacement detection every time, avoiding image correction and image scaling processing during instrument image processing, and simultaneously, directly obtaining characteristic point positions and obtaining detection results in a specified area through simple processing such as scanning when scale marks, pointer arrows and pointer tail characteristic points are extracted from an instrument image, thereby greatly simplifying the image processing process of instrument detection.
The clamp base 1 and the camera support 15 are made of aluminum materials which are convenient for heat dissipation and heat conduction, and the aluminum materials have good heat conductivity, can effectively conduct heat of the high-definition camera 14, play a role in heat dissipation, and are beneficial to long-time stable operation of the camera.
The indicator is clamped in the indicator limiting block 9, the lateral position of the detected indicator can be determined on the inner side surface, and the indicator positioning block 3 is used for determining the longitudinal position distance between the indicator and the high-definition camera 14, so that the indicator and the high-definition camera 14 are kept coaxial and spaced, and the consistency of image acquisition during the detection of the indicator replacement each time can be ensured.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. A special fixture for aviation position indicator vision test system, including being used for placing anchor clamps base (1) of position indicator (11) and high definition camera (14), its characterized in that: the high-definition camera (14) shooting definition guaranteeing device is characterized by further comprising a positioning component which is arranged on the clamp base (1) and used for guaranteeing the angle requirement during the gesture test of the position indicator (11) and a shielding component which is arranged on the clamp base (1) and used for guaranteeing the shooting definition of the high-definition camera (14).
2. A special fixture for an aircraft position indicator vision testing system according to claim 1, wherein: the positioning assembly comprises an indicator limiting block (9), an indicator positioning block (3) for fixing a position indicator (11) on the indicator limiting block (9) through an indicator fixing screw (10), a first side plate (4) and a second side plate (7) which are respectively arranged on two sides of the clamp base (1) to ensure the lateral lying posture angle requirement of the position indicator (11), and an upper baffle (8) which is arranged on the rear side of the clamp base (1) and is used for ensuring the upward tilting posture test of the position indicator (11) and is required in angle.
3. A special fixture for an aircraft position indicator vision testing system according to claim 2, wherein: the first side plate (4) and the second side plate (7) are in 90-degree relation with the clamp base (1).
4. A special fixture for an aircraft position indicator vision testing system according to claim 2, wherein: the rear side of the upper baffle plate (8), the rear side of the side plate I (4), the rear side of the side plate II (7) and the rear side of the clamp base (1) are on the same plane and are perpendicular to the clamp base (1).
5. A special fixture for an aircraft position indicator vision testing system according to claim 2, wherein: the clamp base (1) is provided with a first mounting hole (12) and a second mounting hole (2) for fixedly mounting the clamp on the buzzer in a normal posture.
6. A special fixture for an aircraft position indicator vision testing system according to claim 2, wherein: and the upper baffle plate (8) is provided with a mounting hole III (6) for fixing the clamp on the buzzer in a upward-tilting posture.
7. A special fixture for an aircraft position indicator vision testing system according to claim 2, wherein: and mounting holes IV (5) for fixedly mounting the clamp on the buzzer in a lateral lying posture are formed in the side plate I (4) and the side plate II (7).
8. A special fixture for an aircraft position indicator vision testing system according to claim 1, wherein: the shielding assembly comprises a camera bracket (15) which is arranged on the clamp base (1) and used for installing the high-definition camera (14), a baffle (16) which is arranged on the clamp base (1) and matched with the high-definition camera (14) for blocking light, and a protective cover (13) for protecting the camera.
9. A special fixture for an aircraft position indicator vision test system as recited in claim 8, wherein: the clamp base (1) and the camera support (15) are made of aluminum materials convenient for heat dissipation and heat conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322948687.9U CN220912320U (en) | 2023-11-01 | 2023-11-01 | Special fixture for vision test system of aviation position indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322948687.9U CN220912320U (en) | 2023-11-01 | 2023-11-01 | Special fixture for vision test system of aviation position indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220912320U true CN220912320U (en) | 2024-05-07 |
Family
ID=90907886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322948687.9U Active CN220912320U (en) | 2023-11-01 | 2023-11-01 | Special fixture for vision test system of aviation position indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220912320U (en) |
-
2023
- 2023-11-01 CN CN202322948687.9U patent/CN220912320U/en active Active
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