CN218582760U - Auxiliary camera target surface angle adjusting device - Google Patents

Abstract

The utility model discloses an auxiliary camera target surface angle adjusting device belongs to optical detection equipment. The device comprises a detection table, a camera, a controller and an angle adjusting assembly. Wherein a marking member of a predetermined plane pattern is formed on the inspection stage; the camera is arranged above the detection table and used for acquiring a front view of the identification piece; the controller is in signal connection with the camera and obtains an inclined included angle between the camera target surface and the detection table by analyzing the difference between the front view of the identification piece and the preset plane pattern of the identification piece; the angle adjusting assembly is arranged below the camera or the detection table and is suitable for adjusting the position of the camera or the detection table. The utility model discloses a set up the identification member on examining test table surface, through the shape that acquires the identification member to analysis and judgment reachs the camera for examining test table's angle difference, then feeds back to the angle adjustment subassembly, realizes the regulation to angle between camera target surface and the testee.

Description

Auxiliary camera target surface angle adjusting device

Technical Field

The utility model belongs to optical detection equipment, especially an auxiliary camera target surface angle adjusting device.

Background

In image measurement or machine vision application, calibration of camera parameters is a very critical link, and the accuracy of a calibration result and the stability of an algorithm directly influence the accuracy of a result generated by the operation of a camera. Therefore, the camera calibration is a premise of subsequent work, and the improvement of the calibration precision is a key point of scientific research.

When the detected plane is tilted with respect to the optical axis of the lens in the optical device of the camera, such tilt will cause the focus to vary with the detected plane surface, which in turn causes the image to be blurred due to the out-of-focus. In order to achieve optimum image quality, its position must be checked for location to ensure that relative parallelism between the camera and the object being measured is guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model provides an auxiliary camera target surface angle adjusting device to solve the problem that the background art relates.

The utility model provides an auxiliary camera target surface angle adjusting device, include:

a test stage on which a marking member of a predetermined planar pattern is formed;

the camera is arranged above the detection table and used for acquiring a front view of the identification piece or the part placed on the detection table;

the controller is in signal connection with the camera and obtains an inclined included angle between the camera target surface and the detection table by analyzing the difference between the front view of the identification piece and the preset plane pattern of the identification piece;

the angle adjusting assembly is arranged below the camera or the detection table and is suitable for adjusting the position of the camera or the detection table, so that the detection table is just parallel to the target surface of the camera.

Preferably or optionally, the detection table is in a transparent state or a hollow state; the identification piece is a display which is arranged at the bottom of the detection table and displays a preset shape on a preset position in the center of the screen.

Preferably or alternatively, the predetermined shape may be a circle or a rectangle.

Preferably or optionally, the predetermined shaped outer edge is equidistant from the left and right sides of the display; the distances from the outer edge of the preset shape to the upper side and the lower side of the display are equal.

Preferably or optionally, the identification member is at least three laser emitters equidistantly arranged around the camera, and the laser emitters irradiate on the detection table to form at least three identification points.

Preferably or optionally, the angle adjustment assembly comprises:

a mounting frame;

the first mounting seat is fixedly mounted on the mounting frame and is positioned right above the detection table;

the first-stage rotating platform is arranged at the bottom of the first mounting seat; the camera is driven to rotate left and right along the first mounting seat;

the secondary rotating table is arranged at the bottom of the output end of the primary rotating table; is adapted to drive the camera to rotate back and forth along the first mount.

Preferably or optionally, the primary rotating table comprises a first driving motor arranged on the first mounting seat, and a second mounting seat which is in transmission connection with the first driving motor and can rotate left and right along the first mounting seat;

the second-stage rotating platform comprises a second driving motor arranged on the second mounting seat, and a third mounting seat which is in transmission connection with the second driving motor, can rotate back and forth along the second mounting seat and is used for mounting a camera.

Preferably or optionally, the second mount comprises:

the section of the upper part is U-shaped, the U-shaped section is sleeved on the second mounting seat, and the inner side of the U-shaped section is fixedly connected with an output shaft of the first driving motor;

the lower part is formed into an inverted U-shaped section which is rotated by 90 degrees in the axial direction, a second driving motor is fixedly arranged on the side surface of the first mounting seat, and a third mounting seat is sleeved on the inner side of the second driving motor.

Preferably or alternatively, the upper and lower portions are secured together by welding, riveting, bonding, or integral molding.

The utility model relates to an auxiliary camera target surface angle adjusting device compares in prior art, has following beneficial effect: the utility model discloses a set up the identification member on examining test table surface, through the shape that acquires the identification member to the analysis is judged and is reachd the camera for examining test table's angle difference, then feeds back to the angle adjustment subassembly, realizes the regulation to the angle between camera target surface and the measured object.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a first schematic structural diagram of the angle adjusting assembly of the present invention.

Fig. 3 is a schematic structural diagram of the angle adjusting assembly of the present invention.

Fig. 4 is an illustration of the marking member in embodiment 1 of the present invention.

Fig. 5 is an illustration of the marking member in the embodiment 2 of the present invention.

The reference signs are: the inspection station 100, the marker 200, the camera 300, the angle adjusting assembly 400, the display 210, the outer edge 220 of the predetermined shape, the marking point 230, the mounting frame 410, the first mounting seat 420, the primary rotating table 430, the secondary rotating table 440, the first driving motor 431, the second mounting seat 432, the second driving motor 441, the third mounting seat 442, the upper portion 432a, and the lower portion 432b.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

Example 1

Referring to fig. 1 to 3, an auxiliary camera 300 target surface angle adjusting apparatus includes: inspection station 100, camera 300, controller and angle adjustment assembly 400.

The inspection table 100 is in a transparent state or a hollow state, and the marker 200 is a display 210 which is arranged at the bottom of the inspection table 100 and displays a predetermined shape at a predetermined position in the center of the screen. The identification member 200 is visible through the upper surface of the test station 100; a camera 300 disposed above the inspection station 100 for acquiring a front view of the identifier 200 or the part placed on the inspection station 100; the controller is a PC terminal, is in signal connection with the camera 300, and obtains an inclined included angle between the target surface of the camera 300 and the detection table 100 by analyzing the difference between the front view of the marker 200 and the preset plane pattern of the marker 200; the angle adjustment assembly 400 is disposed under the camera 300 or under the inspection station 100, and is adapted to adjust the position of the camera 300 or the inspection station 100 such that the inspection station 100 is exactly parallel to the target surface of the camera 300. In this embodiment, the angle adjustment assembly 400 is connected to the camera 300 for adjusting the position and angle of the camera 300.

Wherein the predetermined shape may be a circle or a rectangle, wherein the distance from the outer edge 220 of the predetermined shape to the left and right sides of the display 210 is equal; the predetermined outer edge 220 is spaced equally from the upper and lower sides of the display 210. In this embodiment, a rectangle is taken as an example to explain the principle, and when the distance between the upper frame and the lower frame of the image acquired by the camera 300 = the distance between the left frame and the right frame = the distance between the target surface of the camera 300 and the object to be measured. When the image acquired by the camera 300 has the upper frame distance > lower frame distance, or the upper frame distance < lower frame distance and the left frame distance > right frame distance, or the left frame distance < right frame distance, it indicates that the vertical angle difference and the left-right angle difference exist between the target surface of the camera 300 and the object to be measured.

In a further embodiment, the angle adjustment assembly 400 comprises: a mounting frame 410, a first mounting base 420, a primary rotation table 430, and a secondary rotation table 440. The first mounting seat 420 is fixedly mounted on the mounting frame 410 and is located right above the inspection table 100; the primary rotating platform 430 is arranged at the bottom of the first mounting seat 420; adapted to drive the camera 300 to rotate left and right along the first mount 420; the secondary rotating table 440 is disposed at the bottom of the output end of the primary rotating table 430; adapted to drive the camera 300 to rotate back and forth along the first mount 420.

Referring to fig. 2 and fig. 3, in this embodiment, an exemplary structure is provided, in which the primary rotating table 430 includes a first driving motor 431 disposed on the first mounting base 420, and a second mounting base 432 connected to the first driving motor 431 and capable of rotating left and right along the first mounting base 420; the secondary rotating stage 440 includes a second driving motor 441 disposed on the second mounting base 432, and a third mounting base 442 drivingly connected to the second driving motor 441, rotatable back and forth along the second mounting base 432, and configured to mount the camera 300.

Wherein the second mount 432 includes: an upper portion 432a and a lower portion 432b. The upper portion 432a and the lower portion 432b are fixed together by welding, riveting, bonding, or integral molding. The section of the upper part 432a is U-shaped, which is sleeved on the second mounting seat 432, and the inner side of the U-shaped is fixedly connected with the output shaft of the first driving motor 431; the lower portion 432b is formed in an inverted "u" shape in cross section, rotated 90 degrees in an axial direction, and is fixedly provided at a side thereof with a second driving motor 441, and at an inner side thereof with a third mounting seat 442 fitted.

For the convenience of understanding the technical solution of the target surface angle adjusting device of the auxiliary camera 300, the operation principle thereof is briefly explained: referring to fig. 4, during the inspection, a graphic of a predetermined shape in the marker 200 is obtained by the camera 300, and an inclined angle between the target surface of the camera 300 and the inspection station 100 is obtained by analyzing a difference between a front view of the marker 200 and a predetermined planar pattern of the marker 200, for example, an inclined angle between the target surface of the camera 300 and the inspection station 100 is obtained by analyzing a difference between a front view of the marker 200 and a predetermined planar pattern of the marker 200; the controller then feeds back the signal to the angle adjustment assembly 400 to achieve adjustment of the angle between the target surface of the camera 300 and the object to be measured.

Example 2

In this embodiment, the structure of the marker 200 is improved on the basis of embodiment 1, and other devices are the same as those in embodiment 1. Referring to fig. 5, the marking member 200 is at least three laser emitters equidistantly disposed around the camera 300, and irradiates on the inspection station 100 to form at least three marking points 230. Determining a plane by using three points and determining the plane where the measured object is located by using a laser feedback technology, wherein if no angle exists between the target surface of the camera 300 and the measured object horizontally, the fed back corresponding image is in a regular shape, namely, the connecting lines of the three identification points 230 are in a regular triangle shape; if an angular difference exists, the fed-back image presents a tilted or scalene triangle.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims (9)

1. The utility model provides an auxiliary camera target surface angle adjusting device which characterized in that still includes:

a test stage on which a marking member of a predetermined planar pattern is formed;

the camera is arranged above the detection platform and used for acquiring a front view of the identification piece or the part placed on the detection platform;

the controller is in signal connection with the camera and obtains an inclined included angle between the camera target surface and the detection table by analyzing the difference between the front view of the identification piece and the preset plane pattern of the identification piece;

the angle adjusting assembly is arranged below the camera or the detection platform and is suitable for adjusting the position of the camera or the detection platform, so that the detection platform is exactly parallel to the target surface of the camera.

2. The device of claim 1, wherein the inspection stage is transparent or hollow; the identification piece is a display which is arranged at the bottom of the detection table and displays a preset shape on a preset position in the center of the screen.

3. The auxiliary camera target surface angle adjusting device of claim 2, wherein the predetermined shape can be a circle or a rectangle.

4. The auxiliary camera target surface angle adjusting device of claim 2, wherein the distance from the outer edge of the predetermined shape to the left and right sides of the display is equal; the distances from the outer edge of the preset shape to the upper side and the lower side of the display are equal.

5. The auxiliary camera target surface angle adjustment device of claim 1, wherein the identification member is at least three laser emitters equidistantly arranged around the camera, and the laser emitters irradiate on the detection table to form at least three identification points.

6. The auxiliary camera target surface angle adjustment apparatus of claim 1, wherein the angle adjustment assembly comprises:

a mounting frame;

the first mounting seat is fixedly mounted on the mounting frame and is positioned right above the detection platform;

the first-stage rotating platform is arranged at the bottom of the first mounting seat; the camera is driven to rotate left and right along the first mounting seat;

the second-stage rotating platform is arranged at the bottom of the output end of the first-stage rotating platform; is adapted to drive the camera to rotate back and forth along the first mount.

7. The auxiliary camera target surface angle adjusting device of claim 6, wherein the primary rotating stage comprises a first driving motor disposed on the first mounting seat, and a second mounting seat connected with the first driving motor in a transmission manner and capable of rotating left and right along the first mounting seat;

the second-stage rotating platform comprises a second driving motor arranged on the second mounting seat, and a third mounting seat which is in transmission connection with the second driving motor, can rotate back and forth along the second mounting seat and is used for mounting a camera.

8. The auxiliary camera target surface angle adjustment apparatus of claim 7, wherein the second mounting seat comprises:

the section of the upper part is U-shaped, the U-shaped section is sleeved on the second mounting seat, and the inner side of the U-shaped section is fixedly connected with an output shaft of the first driving motor;

the lower part is formed into an inverted U-shaped section which is rotated by 90 degrees in the axial direction, a second driving motor is fixedly arranged on the side surface of the first mounting seat, and a third mounting seat is sleeved on the inner side of the second driving motor.

9. The device of claim 8, wherein the upper and lower portions are fixed together by welding, riveting, bonding or integral molding.

Images