Position calibration device and tester

Abstract

The utility model provides a position calibration device and a tester, the position calibration device comprises an adjusting assembly and a distance measuring assembly, the adjusting assembly is connected with a detection bench of the tester, the distance measuring assembly can move on the same rail with a shooting detection assembly of the tester, and the distance between the distance measuring assembly and a to-be-measured piece fixed on the detection bench can be measured; in the position calibration process, the adjusting assembly is used for adjusting the inclination angle of the detection table according to the measurement data of the distance measurement assembly, so that the to-be-detected surface of the to-be-detected piece is parallel to the moving plane of the photographing detection assembly, and the accuracy of the test result can be ensured; besides, the position calibration device quantifies the parallelism of the to-be-tested surface of the to-be-tested piece and the moving plane of the photographing detection assembly by using objective data, so that interference of human factors is avoided, and the consistency of test results of the to-be-tested piece and the accuracy of the test results can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen performance testing of electronic products, and in particular to a position calibration device and a tester. Background Art

[0002] Screen performance testing is required for electronic products in the early stages of design and development. In order to ensure the accuracy of the test results, it is necessary to ensure that the screen is placed horizontally and the moving plane of the charge-coupled device (CCD) is level before testing.

[0003] In the existing electronic product screen performance related testing process, it is usually assumed that the moving plane of the charge coupled device is horizontal, and with the help of a level ruler, the test surface of the DUT is manually adjusted to be horizontal. Due to the introduction of human interference, the test results of the screen performance test are poorly consistent and have low accuracy. Utility Model Content

[0004] In view of this, the present invention is dedicated to providing a position calibration device, which can effectively improve the consistency of the test results of the screen performance test and improve the accuracy of the test results. In addition, the present invention also provides a tester including the above position calibration device.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A position calibration device, comprising:

[0007] An adjustment component connected to a test bench of the tester;

[0008] A distance measuring component, which can move in the same track as the photographing and detecting component of the tester, and can measure the distance between the distance measuring component and the object to be tested fixed on the testing table;

[0009] The adjusting component can adjust the tilt angle of the detection platform according to the measurement result of the distance measuring component, so that the test surface of the test piece is parallel to the moving plane of the distance measuring component.

[0010] Preferably, a control component is further included, and the control component is at least capable of receiving the measurement information of the distance measuring component and controlling the adjustment component to adjust the inclination angle of the detection platform.

[0011] Preferably, the distance measuring component is arranged on a first sliding seat for mounting the photographing and detecting component, so as to realize the co-track movement of the distance measuring component and the photographing and detecting component.

[0012] Preferably, it also includes a second sliding seat for slidingly setting the distance measuring component on the moving track of the photographing and detecting component to achieve the same track movement of the distance measuring component and the photographing and detecting component.

[0013] Preferably, the adjustment component is a height adjustment component, and a plurality of the height adjustment components are provided and distributed at different angles of the detection platform.

[0014] Preferably, the height adjustment assembly comprises:

[0015] Support legs, used to support the testing platform, located at a corner of the testing platform and having adjustable height;

[0016] A driving member is used to drive the supporting foot to achieve height adjustment of the supporting foot.

[0017] A tester, comprising:

[0018] Photo detection component, used to photograph and locate the test piece;

[0019] A testing platform, located in the identification area of ​​the photographing and testing component, and used for fixing the object to be tested;

[0020] A position calibration device, which is any of the position calibration devices described above;

[0021] The position calibration device can adjust the tilt angle of the detection platform so that the moving plane of the photographing detection component is parallel to the surface to be tested of the object to be tested.

[0022] Preferably, it also includes a moving track capable of limiting the movement of the photographing detection component within the moving plane, and the moving track includes:

[0023] A first guide rail extending along a first direction;

[0024] A second guide rail extends along a second direction and is slidably disposed on the first guide rail, and the photographing detection component is slidably connected to the second guide rail via a first sliding seat;

[0025] Wherein, there is an angle between the first direction and the second direction.

[0026] Preferably, the first sliding seat comprises:

[0027] A sliding sleeve, which is arranged on the second guide rail;

[0028] The mounting plate is connected to the sliding sleeve and has a mounting surface on which the photographing and detecting component can be mounted.

[0029] Preferably, the working surface of the testing platform is provided with a plurality of fixing fixtures for fixing the test piece.

[0030] It can be seen from the above technical scheme that when the position calibration device in the utility model is used to calibrate the position of the workpiece to be tested, the adjustment component is used to adjust the inclination angle of the detection platform according to the measurement data of the distance measuring component, so that the test surface of the workpiece to be tested is parallel to the moving plane of the distance measuring component. Since the distance measuring component and the photographing detection component of the tester move on the same track, the moving plane of the distance measuring component is parallel to the moving plane of the photographing detection component. That is, the above-mentioned use of the adjustment component to adjust the inclination angle of the detection platform according to the measurement data of the distance measuring component can make the test surface of the workpiece to be tested parallel to the moving plane of the photographing detection component, thereby ensuring the accuracy of the test results. In addition, the position calibration device in the utility model quantifies the parallelism between the test surface of the workpiece to be tested and the moving plane of the photographing detection component with objective data, avoiding the interference of human factors, thereby improving the consistency of the test results of the workpiece to be tested and the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a structural schematic diagram of a tester provided in the utility model;

[0032] Figure 2 The figure shows a partial schematic diagram of the distance between a distance measuring component provided in the present invention and a measured surface of a measured object.

[0033] exist Figure 1-Figure 2 middle:

[0034] 1-second guide rail, 2-part to be tested, 3-photographing detection component, 4-distance measuring component, 5-detection table, 6-abutment block, 7-fixed tooling, 8-driving part, 9-control component, 10-first guide rail, 11-mounting plate, 12-sliding sleeve;

[0035] 21-Surface to be tested. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] First of all, it should be noted that the position calibration device in the present invention is suitable for assisting in testing the screen performance of electronic products (the electronic products here refer to products with screens such as mobile phones, computers and tablets); for example, testing of screen touch performance and testing of screen optical performance, etc., which require screen horizontality.

[0038] As shown Figure 1 in the figure, the position calibration device provided in the embodiment of the present utility model includes an adjustment component and a distance measurement component 4. Among them, the adjustment component is connected to the detection table 5 of the tester. The distance measurement component 4 (such as a laser rangefinder, an infrared rangefinder, etc.) can move on the same track as the photographing detection component 3 (such as a CCD camera) of the tester, and can measure the distance between the distance measurement component 4 and the workpiece 2 to be measured fixed on the detection table 5.

[0039] When using the position calibration device in this embodiment to calibrate the position of the workpiece 2 to be measured, first fix the workpiece 2 to be measured on the detection table 5, then use the adjustment component to roughly adjust the horizontality of the workpiece 2 to be measured. After that, start the distance measurement component 4, make the distance measurement component 4 move along the track of the photographing detection component 3, and select N points to measure the vertical distance from the distance measurement component 4 to the surface 21 to be measured of the workpiece 2 to be measured (such as the surface where the mobile phone screen is located); then, according to the measurement results, control the adjustment component to finely adjust the tilt angle of the detection table 5 so that the surface 21 to be measured of the workpiece 2 to be measured is parallel to the moving plane of the distance measurement component 4. After the adjustment is completed, the distance measurement component 4 moves along the track of the photographing detection component 3 again, and selects N points to measure the vertical distance from the distance measurement component 4 to the surface 21 to be measured of the workpiece 2 to be measured, so as to detect whether the position of the workpiece 2 to be measured after the preliminary position calibration meets the requirements. If the requirements are met, the calibration is terminated and the test of the workpiece 2 to be measured is started; if the requirements are not met, the above-mentioned fine adjustment steps and measurement steps are repeated until the position of the workpiece 2 to be measured meets the requirements.

[0040] It should be noted that: when using the distance measurement component 4 to measure the vertical distance from the distance measurement component 4 to the surface 21 to be measured of the workpiece 2 to be measured, the number N of the distance measurement points should be greater than or equal to 3, and the positions of the distance measurement points should not be on the same straight line, so as to ensure that the measurement data can represent the distance from the moving plane of the distance measurement component 4 to the surface 21 to be measured of the workpiece 2 to be measured, and further ensure the accuracy of the position calibration. Further, in order to ensure the measurement accuracy, the positions of the distance measurement points should be as scattered as possible. In a specific embodiment, as Figure 2 shown in the figure, the surface 21 to be measured of the workpiece 2 to be measured is rectangular. During the distance measurement process, 3 measurement points are set, and the positions of the measurement points are close to the edge positions of the surface 21 to be measured and are not on the same straight line.

[0041] In addition, the data measured at the N distance measurement points should meet the following requirements: max{|di - dj|} ≤ σ, (0 < i < N + 1, i ∈ Z, 0 < j < N + 1, j ∈ Z); where di and dj are the measurement data obtained by the distance measurement component 4 at different distance measurement points; the value of σ represents the strictness of the horizontal standard, which is selected by the tester according to the test requirements, and the present utility model does not make specific limitations on this.

[0042] It should also be noted that in the related art, before testing the piece to be tested 2, the purpose of ensuring that the piece to be tested 2 is placed horizontally and the moving plane of the photographing and detecting component 3 is horizontal is to make the moving plane of the sample to be tested relatively parallel to the moving plane of the photographing and detecting component 3. When the position calibration device in this embodiment is used to calibrate the position of the piece to be tested 2, the moving plane of the distance measuring component 4 is parallel to the test surface 21 of the piece to be tested 2 under the cooperation of the distance measuring component 4 and the adjustment component. Since the distance measuring component 4 and the photographing and detecting component 3 of the tester move on the same track, the moving plane of the distance measuring component 4 is parallel to the moving plane of the photographing and detecting component 3. That is, when the moving plane of the distance measuring component 4 is parallel to the test surface 21 of the piece to be tested 2, the moving plane of the photographing and detecting component 3 will also be parallel to the test surface 21 of the piece to be tested 2. Thus, the technical effect in the above-mentioned related art can be achieved.

[0043] In addition, when the position calibration device in this embodiment calibrates the position of the test piece 2, it only needs to ensure that the test surface 21 of the test piece 2 is parallel to the moving plane of the photographing detection component 3. However, the related technology requires both to ensure that the test piece 2 is placed horizontally and to ensure that the moving plane of the photographing detection component 3 is horizontal. In comparison, the position calibration device in this embodiment can simplify the equipment debugging process and thus improve the detection efficiency. At the same time, the position calibration device in this embodiment quantifies the parallelism between the test surface 21 of the test piece 2 and the moving plane of the photographing detection component 3 with objective data, avoiding the interference of human factors, thereby improving the consistency of the test results of the test piece 2. In addition, the position calibration device in this embodiment can also effectively avoid the influence of the instrument error of the moving track of the photographing detection component 3 on the test results.

[0044] like Figure 1 As shown, the position calibration device in this embodiment also includes a control component 9, and the control component 9 can at least receive the measurement information of the distance measuring component 4, and control the adjustment component to adjust the inclination angle of the detection platform 5. During the position calibration process, after the distance measuring component 4 measures the vertical distance from the distance measuring component 4 to the test surface 21 of the test piece 2, the measurement data is transmitted to the control component 9, and the control component 9 analyzes the above measurement data to determine whether the position of the test piece 2 meets the requirements, and if the requirements are met, the operator is prompted to perform the next test. If the requirements are not met, the control adjustment component is controlled to adjust the inclination angle of the detection platform 5. Further, in a preferred embodiment, the control component 9 is simultaneously connected to the distance measuring component 4 and the adjustment component control, and can receive the measurement data of the distance measuring component 4. In this way, during the position calibration process, the operator only needs to press the start button of the position calibration, and the control component 9 can automatically adjust the position of the test piece 2 to meet the requirements, effectively improving the automation of the position calibration.

[0045] In an optional embodiment, the distance measuring component 4 is arranged on the first sliding seat for mounting the photographing and detecting component 3, so as to realize the co-track movement of the distance measuring component 4 and the photographing and detecting component 3. Under this arrangement, since the setting of an additional sliding connection structure is avoided, the device structure can be effectively simplified and the device cost can be reduced. At the same time, it can also avoid that the moving plane of the distance measuring component 4 is not parallel to the moving plane of the photographing and detecting component 3 due to the use of different sliding connection structures, thereby ensuring the accuracy of position calibration.

[0046] In another optional embodiment, the position calibration device further includes a second sliding seat for slidingly setting the distance measuring component 4 on the moving track of the photographing and detecting component 3, so as to realize the co-track movement of the distance measuring component 4 and the photographing and detecting component 3. In this setting mode, the distance measuring component 4 and the photographing and detecting component 3 are connected to the same moving track using different sliding connection structures, and the movement of the distance measuring component 4 and the photographing and detecting component 3 can be independently controlled, thereby improving the operability of the device.

[0047] In an optional embodiment, the adjustment component is a height adjustment component, and a plurality of height adjustment components are provided and distributed at different corners of the detection platform 5 (the corners here refer to the corners of the detection platform 5). In this way, when the tilt angle of the detection platform 5 needs to be adjusted, only the height of some height adjustment components needs to be adjusted. Figure 1 As shown, the detection platform 5 is a rectangular parallelepiped, and a height adjustment component is provided at each of the four corners of the side of the detection platform 5 away from the distance measuring component 4. Under this structure, when the inclination angle of the detection platform 5 needs to be adjusted, it is only necessary to control one or two of the height adjustment components to remain stationary, and then adjust the heights of the other three or two height adjustment components.

[0048] Further, in some embodiments, the height adjustment assembly includes a support foot and a driving member 8, wherein the support foot is used to support the detection platform 5, and is located at the corner of the detection bar and is adjustable in height, and the driving member 8 is used to drive the support foot to achieve the height adjustment of the support foot. In this way, the automation of the inclination angle adjustment of the detection platform 5 can be effectively improved, thereby improving the position calibration efficiency and the calibration accuracy. Exemplarily, the driving member 8 is a driving motor, the support angle includes a threaded rod and an abutment block 6, and the center position of the abutment block 6 is provided with a threaded hole that can be adapted to the threaded rod, the output end of the driving motor is connected to the screw rod, and can drive the threaded rod to rotate, and the abutment block 6 is provided with a limited structure (for example, a limited groove adapted to the corner shape of the detection platform 5) on one side of the detection platform 5 to prevent the abutment block 6 and the detection platform 5 from rotating relative to each other, so that when the inclination angle of the detection platform 5 needs to be adjusted, it is only necessary to control the motor to rotate to drive the abutment block 6 to move up and down, so that the height of the height adjustment assembly can be changed, thereby achieving the adjustment of the inclination angle of the detection platform 5. Of course, the above structure can also be adjusted so that the threaded rod is fixed and the driving motor is connected to the abutment block 6, so that the purpose of adjusting the height of the height adjustment assembly can also be achieved.

[0049] It should be understood that the above only takes the adjustment component as a height adjustment component as an example to illustrate the setting method of the adjustment component, but the utility model is not limited to this. For example, the adjustment component can also be a rotation adjustment component set at the center of the detection platform 5. Specifically, the rotation adjustment component includes a support column located at the center of the detection platform 5 and connected to the ball head of the detection platform 5. The side of the support column is surrounded by a plurality of adjustment members, which can be telescopic components such as electric push rods or oil cylinders. One end of the adjustment member is hinged to the support column, and the other end is connected to the detection platform 5. In this way, when the inclination angle of the detection platform 5 needs to be adjusted, it is only necessary to control the telescopic end of the adjustment member and extend and retract it as needed.

[0050] In addition, the embodiment of the utility model further provides a tester, including a photographing detection component 3, a detection table 5 and the above-mentioned position calibration device, wherein the photographing detection component 3 is used to photograph and locate the test piece 2, the detection table 5 is located in the identification area of ​​the photographing detection component 3, and is used to fix the test piece 2, and the position calibration device is the above-mentioned position calibration device. When the tester in this embodiment is used to test the performance of the test piece 2, first, the position calibration device is used to adjust the inclination angle of the detection table 5 so that the moving plane of the photographing detection component 3 is parallel to the test surface 21 of the test piece 2; thereby ensuring the accuracy of the test result. In addition, it should be noted that since the tester includes the above-mentioned position calibration device, the beneficial effects brought about by the position calibration device to the tester are discussed in detail above and will not be repeated here.

[0051] Furthermore, in some embodiments, the control system of the photographing detection component 3 is integrated with the control component 9 of the control position calibration device, thereby simplifying the control structure of the tester and improving the controllability of the tester.

[0052] In some embodiments, Figure 1 As shown, the tester also includes a moving track capable of limiting the movement of the photographing detection component 3 in the moving plane, and the moving track includes a first guide rail 10 and a second guide rail 1, wherein the first guide rail 10 extends along the first direction, the second guide rail 1 extends along the second direction, and is slidably arranged on the first guide rail 10, and the photographing detection component 3 is slidably connected to the second guide rail 1 through a first sliding seat; in addition, there is an angle between the first direction and the second direction. The size of the angle between the first direction and the second direction can be adaptively designed as needed, and the utility model does not make specific restrictions on this. In a specific embodiment, the angle between the first direction and the second direction is 90°. And two first guide rails 10 are arranged side by side along the second direction, the second guide rail 1 is arranged on the crossbeam of the portal bracket, and the two support columns of the portal crossbeam are provided with a slide groove adapted to the first guide rail 10 at one end away from the crossbeam, thereby realizing the sliding connection between the first guide rail 10 and the second guide rail 1.

[0053] Of course, the above is only an example of the movable rail including the first guide rail 10 and the second guide rail 1, and an exemplary description of the setting method of the movable rail is provided, but the setting method of the movable rail in the embodiment of the utility model is not limited to this. For example, the first guide rail 10 can also be changed to a slide groove extending along the first direction, and the second guide rail 1 extending along the second direction is moved and set in the slide groove through a roller structure, and can move along the extension direction of the slide groove.

[0054] Furthermore, in some embodiments, Figure 1 As shown, the first sliding seat includes a sliding sleeve 12 and a mounting plate 11, wherein the sliding sleeve 12 is arranged on the second guide rail 1, and the mounting plate 11 is connected to the sliding sleeve 12 and has a mounting surface capable of mounting the photo detection component 3.

[0055] Further, in some embodiments, the working surface of the test table 5 is provided with a plurality of fixing fixtures 7 for fixing the parts to be tested. The number of the fixing fixtures 7 can be adaptively designed according to the needs, and the utility model does not make specific restrictions on this. For example, Figure 1 As shown, four fixing fixtures 7 are provided, and are respectively used to fix different sides of the test piece 2, thereby ensuring the stability of the fixed test piece 2. In addition, the fixing fixture 7 can be a fixing plate threadedly connected to the test table 5 or other fixing structures that can clamp the test piece 2 on the test table 5. Specifically, an adaptive design can be performed according to needs.

[0056] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0057] It should be understood that the limiting terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present invention are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present invention.

[0058] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the utility model to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A position calibration device, characterized in that: include: An adjustment component connected to a test bench of the tester; A distance measuring component, which can move in the same track as the photographing and detecting component of the tester, and can measure the distance between the distance measuring component and the object to be tested fixed on the testing table; The adjusting component can adjust the tilt angle of the detection platform according to the measurement result of the distance measuring component, so that the test surface of the test piece is parallel to the moving plane of the distance measuring component.

2. The position calibration device according to claim 1, characterized in that: It also includes a control component, and the control component is at least capable of receiving the measurement information of the distance measuring component and controlling the adjustment component to adjust the tilt angle of the detection platform.

3. The position calibration device according to claim 1, characterized in that: The distance measuring component is arranged on a first sliding seat for mounting the photographing and detecting component, so as to realize the co-track movement of the distance measuring component and the photographing and detecting component.

4. The position calibration device according to claim 1, characterized in that: It also includes a second sliding seat, which is used to slide the distance measuring component on the moving track of the photographing and detecting component to achieve the same track movement of the distance measuring component and the photographing and detecting component.

5. The position calibration device according to claim 1, characterized in that: The adjusting component is a height adjusting component, and a plurality of the height adjusting components are provided and distributed at different angles of the detection platform.

6. The position calibration device according to claim 5, characterized in that: The height adjustment assembly comprises: Support legs, used to support the testing platform, located at a corner of the testing platform and having adjustable height; A driving member is used to drive the supporting foot to achieve height adjustment of the supporting foot.

7. A tester, characterized in that: include: Photo detection component, used to photograph and locate the test piece; A testing platform, located in the identification area of ​​the photographing and testing component, and used for fixing the object to be tested; A position calibration device, which is the position calibration device according to any one of claims 1 to 6; The position calibration device can adjust the tilt angle of the detection platform so that the moving plane of the photographing detection component is parallel to the surface to be tested of the object to be tested.

8. The tester according to claim 7, characterized in that: It also includes a moving track capable of limiting the movement of the photographing detection component within the moving plane, and the moving track includes: A first guide rail extending along a first direction; A second guide rail extends along a second direction and is slidably disposed on the first guide rail, and the photographing detection component is slidably connected to the second guide rail via a first sliding seat; Wherein, there is an angle between the first direction and the second direction.

9. The tester according to claim 8, characterized in that: The first sliding seat comprises: A sliding sleeve, which is arranged on the second guide rail; The mounting plate is connected to the sliding sleeve and has a mounting surface on which the photographing and detecting component can be mounted.

10. The tester according to claim 7, characterized in that: The working surface of the testing platform is provided with a plurality of fixing fixtures for fixing the test piece.

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