Three-dimensional measurement standard test block device for measurement and calibration of endoscope

Abstract

The utility model discloses a three-dimensional measurement standard test block device for measurement and calibration of an endoscope. The three-dimensional measurement standard test block device comprises an outer box and a three-dimensional measurement standard test block, wherein the outer box is provided with a probe through hole, and the three-dimensional measurement standard test block is arranged in the outer box; the inner surface of the outer box and the outer surface of the three-dimensional measurement standard test block are black; the three-dimensional measurement standard test block is provided with standard straight scale marks used for two-dimensional straight line calibration and a plurality of circular-truncated-cone-shaped pits used for three-dimensional graph calibration. According to the utility model, two-dimensional measurement and three-dimensional measurement calibration can be considered at the same time, a measurement scene is simulated, and accurate measurement in a three-dimensional space is provided. The device not only has the advantages of being simple and convenient to operate, high in cost benefit, easy to carry and store and the like, but also can remarkably improve the measurement precision and efficiency of the industrial endoscope.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a three-dimensional measurement standard test block device used for endoscope measurement and calibration. Background Art

[0002] The industrial endoscope is a commonly used visual inspection instrument. Although endoscope measurement technology has made some progress, it still has limitations such as low measurement accuracy and inaccurate measurement results. This requires calibration against standard test blocks before using the endoscope to ensure the accuracy of the measurement results. Although the industrial endoscope measurement and calibration tools currently on the market can meet the measurement needs of two-dimensional planes to a certain extent, they cannot accurately reflect the complex structures in three-dimensional space and calibrate the three-dimensional measurement results. The use of two-dimensional calibration alone affects the accuracy and reliability of the measurement.

[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a three-dimensional measurement standard test block device for endoscope measurement and calibration, which can take into account both two-dimensional measurement and three-dimensional measurement calibration, simulate measurement scenes, and provide accurate measurement in three-dimensional space.

[0005] The technical solution of the present utility model is as follows: A three-dimensional measurement standard test block device for endoscope measurement and calibration is provided, comprising: an outer box provided with a probe through hole, and a three-dimensional measurement standard test block disposed within the outer box; the inner surface of the outer box and the outer surface of the three-dimensional measurement standard test block are both black; the three-dimensional measurement standard test block is provided with standard straight scale lines for two-dimensional straight line calibration and a plurality of frustum-shaped pits for three-dimensional graphic calibration. During use, an endoscope enters the outer box through the probe through hole, simulating an endoscope working in a real dark scene, turns on the visible light illumination of the endoscope, and aligns the leading edge of the probe with the scale and pits on the three-dimensional measurement standard test block at a distance of 20mm to 30mm from the upper surface of the three-dimensional measurement standard test block to take a photo for measurement and calibration. The inner wall of the outer box and the surface of the three-dimensional measurement standard test block are both black. Black absorbs light but does not reflect light, making the image taken by the endoscope clear and unaffected by light.

[0006] Furthermore, the standard straight scale line has a total length of 50 mm and an accuracy of 1 mm. The standard straight scale line is marked with a numerical value.

[0007] Furthermore, there are four truncated cone-shaped pits, and the diameter of the bottom surface circle of the four truncated cone-shaped pits is the same. The standard depths H of the four truncated cone-shaped pits from left to right are H = 3mm, H = 2.5mm, H = 2mm, and H = 1.5mm. The standard diameters D of the top surface circle of the four truncated cone-shaped pits are D = 7mm, D = 8mm, D = 9mm, and D = 10mm, respectively. Specific parameters are marked on one side of each truncated cone-shaped pit.

[0008] Furthermore, the outer box includes: a box body provided with an opening, and an upper cover covering the opening; the probe is provided on the upper cover through a hole.

[0009] Furthermore, the probe is arranged directly above the three-dimensional measurement standard test block through a hole.

[0010] Furthermore, the material of the three-dimensional measurement standard test block is quartz glass, 4J36 alloy, aluminum alloy 6063, and the thermal expansion coefficient is less than 2×10 -6 / ℃ any one of ceramics.

[0011] Using the above solution, the utility model provides a three-dimensional measurement standard test block device for endoscope measurement and calibration. It can simultaneously perform two-dimensional and three-dimensional measurement calibration, simulate measurement scenarios, and provide accurate measurements in three dimensions. This device not only offers advantages such as ease of operation, high cost-effectiveness, and ease of portability and storage, but also significantly improves the accuracy and efficiency of industrial endoscope measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 Schematic diagram of the structure of the three-dimensional measurement standard test block. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] See also Figure 1 and Figure 2The present invention provides a three-dimensional measurement standard test block device for endoscope measurement and calibration, comprising: an outer box provided with a probe through hole 11, and a three-dimensional measurement standard test block 10 disposed within the outer box; the inner surface of the outer box and the outer surface of the three-dimensional measurement standard test block 10 are both black; the three-dimensional measurement standard test block 10 is provided with standard straight scale lines 12 for two-dimensional straight line calibration and a plurality of frustum-shaped pits 13 for three-dimensional graphic calibration. During use, an endoscope is inserted into the outer box through the probe through hole 11, simulating an endoscope operating in a dark environment. The endoscope's visible light illumination is turned on, and the leading edge of the probe is aligned with the scale and pits on the three-dimensional measurement standard test block 10 at a distance of 20 mm to 30 mm from the upper surface of the three-dimensional measurement standard test block 10 to take a photo for measurement and calibration. The inner wall of the outer box and the surface of the three-dimensional measurement standard test block 10 are both black. Black absorbs light but does not reflect it, ensuring that the images taken by the endoscope are clear and unaffected by light.

[0016] In this embodiment, the standard straight scale line 12 has a total length of 50 mm and an accuracy of 1 mm. The standard straight scale line 12 is marked with a numerical value.

[0017] In this embodiment, there are four truncated cone-shaped recesses 13. The diameter of the bottom surface of each of the four truncated cone-shaped recesses is the same. The standard depths H of the four truncated cone-shaped recesses from left to right are H = 3 mm, H = 2.5 mm, H = 2 mm, and H = 1.5 mm. The standard diameters D of the top surface of the four truncated cone-shaped recesses are D = 7 mm, D = 8 mm, D = 9 mm, and D = 10 mm, respectively. Specific parameters are marked on one side of each truncated cone-shaped recess 13.

[0018] In this embodiment, the outer box includes: a box body 14 provided with an opening, and an upper cover 15 covering the opening; the probe passage hole 11 is provided on the upper cover 15 .

[0019] In this embodiment, the probe through hole 11 is disposed directly above the three-dimensional measurement standard test block 10 .

[0020] In this embodiment, the three-dimensional measurement standard test block 10 is made of quartz glass, 4J36 alloy, aluminum alloy 6063, and has a thermal expansion coefficient of less than 2×10 -6 / ℃ any one of ceramics.

[0021] In summary, this utility model provides a 3D measurement standard block device for endoscope measurement and calibration. It simultaneously accommodates 2D and 3D measurement calibration, simulates measurement scenarios, and provides precise measurements within 3D space. This device not only offers advantages such as ease of operation, high cost-effectiveness, and ease of portability and storage, but also significantly improves the accuracy and efficiency of industrial endoscope measurements.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-dimensional measurement standard test block device for endoscope measurement and calibration, characterized in that: include: An outer box provided with a probe passage hole, and a three-dimensional measurement standard test block provided in the outer box; The inner surface of the outer box and the outer surface of the three-dimensional measurement standard test block are both black; the three-dimensional measurement standard test block is provided with standard straight scale lines for two-dimensional straight line calibration and a plurality of frustum-shaped pits for three-dimensional graphic calibration.

2. A three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 1, characterized in that: The standard straight scale line has a total length of 50 mm and an accuracy of 1 mm.

3. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 2, characterized in that: The standard straight scale lines are marked with numerical values.

4. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 1, characterized in that: There are four frustoconical pits, and the diameters of the lower surface circles of the four frustoconical pits are the same. The standard depths H of the four frustoconical pits from left to right are H=3mm, H=2.5mm, H=2mm, and H=1.5mm. The standard diameters D of the upper surface circles of the four frustoconical pits are D=7mm, D=8mm, D=9mm, and D=10mm, respectively.

5. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 4, characterized in that: Specific parameters are marked on one side of each of the truncated cone-shaped pits.

6. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 1, characterized in that: The outer box comprises: a box body provided with an opening, and an upper cover covering the opening; and the probe is arranged on the upper cover through a hole.

7. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 1, characterized in that: The probe is arranged through a hole just above the three-dimensional measurement standard test block.

8. The three-dimensional measurement standard test block device for endoscope measurement and calibration according to claim 1, characterized in that: The material of the three-dimensional measurement standard test block is quartz glass, 4J36 alloy, aluminum alloy 6063, and the thermal expansion coefficient is less than 2×10 -6 / ℃ any one of ceramics.

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