On-line calibration device for constructional engineering quality detector group

Abstract

The invention discloses an on-line calibration device for a constructional engineering quality detector group. The on-line calibration device comprises a micrometer head calibration system, a special distance measurement system, a perpendicularity calibration system and measurement software, the micrometer head calibration system, the special distance measurement system and the perpendicularity calibration system are installed on the base in a matched mode. The micrometer head calibration system comprises a CCD industrial camera, a lens, an LED parallel light source and a special clamp. The special clamp realizes relative interval installation of the lens and the LED parallel light source, and the special distance measuring system comprises a linear displacement sensor and a matching clamp; the linear displacement sensor and the micrometer head are installed in a matched mode through a matched clamp. The perpendicularity calibration system comprises a wide-seat angle square, a filler gauge and a step gauge. The online traceability device is convenient to operate and use and high in calibration speed, online calibration is realized, and the calibration efficiency of the calibration device of the constructional engineering quality detector group is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of calibration devices, and in particular to an online calibration device for a construction engineering quality detector group. Background Art

[0002] According to the "JJF (Yu) 184-2015 Calibration Specifications for Verticality Detection Ruler Calibration Devices", when calibrating the verticality detection ruler calibration device, the calibration of the distance between the guide shaft axis and the rotating shaft axis needs to be calibrated with the height caliper and the vernier caliper after removing the measuring seat, and the calibration of the micrometer indication error needs to be calibrated according to the calibration method specified in the JJG 21-2008 micrometer calibration regulations after removing the micrometer. According to the "JJF (Yu) 186-2015 Calibration Specifications for Internal and External Right Angle Detection Rulers and Wedge Feeler Gauge Calibration Devices", when calibrating the internal and external right angle detection rulers and wedge feeler gauge calibration devices, the calibration of the micrometer indication error needs to be calibrated according to the calibration method specified in the JJG 21-2008 micrometer calibration regulations after removing the micrometer, and the calibration of the full range indication error of the indicator needs to be calibrated with a grating indicator calibrator after removing the dial indicator. After the device is calibrated, the disassembled measuring head, micrometer head, dial indicator, etc. need to be reinstalled to restore the accuracy of the device. There are problems such as cumbersome calibration process, difficulty in device restoration, and large workload of manual data recording.

[0003] Invention patent content

[0004] In order to solve the problems existing in the calibration of the construction project quality detector group calibration device, such as complicated calibration process, difficult device recovery, and large workload of manual data recording, the online, fast and high-precision calibration of the construction project quality detector group calibration device is realized, which greatly improves its calibration efficiency, reduces its calibration workload, and adapts to the requirements of the development of measurement technology. This patent designs an online calibration device for the construction project quality detector group. The device is easy to operate and use, has a fast calibration speed, and realizes online calibration, which greatly improves the calibration efficiency of the construction project quality detector group calibration device.

[0005] The technical solutions adopted to achieve the above objectives are:

[0006] An online calibration device for a construction engineering quality detector group realizes online traceability of a verticality detection ruler, an internal and external right angle detection ruler, and a wedge-shaped feeler gauge calibration device, comprising a micrometer calibration system, a special distance measurement system, a verticality calibration system, and measurement software; the micrometer calibration system, the special distance measurement system, and the verticality calibration system are cooperatively installed on a base;

[0007] The micrometer head calibration system comprises a CCD industrial camera, a lens, an LED parallel light source and a special fixture; the special fixture realizes the relative spacing installation of the lens and the LED parallel light source, and the CCD industrial camera is installed on the side of the lens facing away from the LED parallel light source; the micrometer head is installed between the lens and the LED parallel light source, and the online calibration of the micrometer head is realized by moving the micrometer head;

[0008] The dedicated distance measurement system includes a linear displacement sensor and a matching fixture; the linear displacement sensor and the micrometer head are installed in coordination with the matching fixture to measure the vertical distance from the measuring axis of the micrometer head to the working surface of the base;

[0009] The verticality calibration system comprises a wide-seat square, a feeler gauge and a step gauge; the wide-seat square, the step gauge and the feeler gauge are used to calibrate the verticality of the internal and external right angle detection ruler and the wedge-shaped feeler gauge;

[0010] The data collected by the micrometer calibration system, the special distance measurement system and the verticality calibration system are transmitted to the measurement software, and the measurement software outputs the detection result.

[0011] Furthermore, the CCD industrial camera is a MV-XG2500GM-T 10G network industrial camera

[0012] Furthermore, the lens is a MV-LD-90-30M-A industrial lens.

[0013] Furthermore, the LED parallel light source is a KM-SP2403 white light LED parallel light source.

[0014] Furthermore, when tracing the source of the verticality detection ruler, the special fixture includes a vertical plate, a CCD industrial camera and a lens are installed on the upper end of the vertical plate in sequence from top to bottom, an LED parallel light source is installed at the lower middle part of the vertical plate, a connecting seat is installed at the lower end of the vertical plate, a column is installed through the connecting seat, the lower end of the column is installed on the base, a matching fixture is installed on the upper end of the column, a micrometer head is installed on the matching fixture, and the micrometer head is located between the lens and the LED parallel light source.

[0015] Furthermore, when tracing the source of the internal and external right-angle detection ruler and the wedge-shaped feeler gauge, the special fixture includes a connecting plate installed on the base, a vertical plate is installed at one end of the connecting plate, an LED parallel light source is installed on the vertical plate, and an L-shaped plate is installed at the other end of the connecting plate, the vertical portion of the L-shaped plate is installed on the connecting plate and the vertical portion is located outside the connecting plate, and the opening of the L-shaped plate is installed toward the base; the mating fixture is a strip column vertically installed on the base, and a micrometer and a linear displacement sensor are mounted on the strip column to realize the linear displacement sensor to measure the vertical distance from the measuring axis of the micrometer to the working surface of the base.

[0016] Furthermore, the measurement software includes an editor, a debugger, a program wizard App Wizard, and a class wizard Class Wizard.

[0017] The beneficial effects of the present invention are:

[0018] This patent is an online calibration device for a construction project quality detector group. The device is easy to operate and use, has a fast calibration speed, and can realize online calibration, which greatly improves the calibration efficiency of the construction project quality detector group calibration device. The device of the present invention is particularly suitable for the current calibration status of the construction project quality detector group calibration device in my country, and has high practical value and broad market prospects. At the same time, the device is relatively easy to use, which can greatly improve the calibration efficiency of the construction project quality detector group calibration device, reduce the calibration work intensity, reduce the verification cost of the measurement unit, and enable the measurement unit to obtain relatively considerable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an online traceability device for the calibration device of the construction engineering quality detector group for the verticality detection ruler calibration device;

[0020] Figure 2 for Figure 1 Side view of

[0021] Figure 3 It is an online traceability device for the calibration device of the construction engineering quality detector group of the internal and external right angle detection ruler and the wedge-shaped feeler gauge calibration device;

[0022] Figure 4 This is the workflow of the patented measurement software. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings.

[0024] An online calibration device for a construction engineering quality detector group realizes online traceability of a verticality detection ruler calibration device, an internal and external right-angle detection ruler, and a wedge-shaped feeler gauge calibration device, comprising a micrometer head 6 calibration system, a special distance measurement system, a verticality calibration system, and measurement software; the micrometer head 6 calibration system, the special distance measurement system, and the verticality calibration system are cooperatively installed on a base 2.

[0025] The micrometer head 6 calibration system includes a CCD industrial camera 5, a lens 4, an LED parallel light source 8 and a special fixture; the special fixture realizes the relative spacing installation of the lens 4 and the LED parallel light source 8, and the CCD industrial camera 5 is installed on the side of the lens 4 facing away from the LED parallel light source 8; the micrometer head 66 is installed between the lens 4 and the LED parallel light source 8, and the online calibration of the micrometer head 6 is realized by moving the micrometer head 66;

[0026] The special distance measuring system includes a linear displacement sensor and a matching fixture 7; the linear displacement sensor and the micrometer head 6 are installed in coordination with the matching fixture 7 to measure the vertical distance from the measuring axis of the micrometer head 6 to the working surface of the base 2. According to the calibration requirements of the distance parameters, the patent uses the linear displacement sensor with a measuring range of (0-2) m, a speed of 10 mm / s, an extension force of (6.4-7.8) N, and a maximum linearity of ±0.02%.

[0027] The verticality calibration system comprises a wide-seat square, a feeler gauge and a step gauge; the wide-seat square, the step gauge and the feeler gauge cooperate to achieve verticality calibration of the internal and external right angle detection ruler and the wedge-shaped feeler gauge calibration device;

[0028] The data collected by the micrometer head 6 calibration system, the dedicated distance measurement system and the verticality calibration system are transmitted to the measurement software, and the measurement software outputs the detection result.

[0029] In this patent, according to the structural characteristics of the micrometer head 6 of the verticality detection ruler calibration device and the internal and external right angle detection ruler and wedge feeler gauge calibration device, in order to realize the online calibration of the micrometer head 6, this patent adopts a calibrated CCD industrial camera 5 as a length standard. When the micrometer head 6 rotates, the displacement change is collected by the industrial camera 5, and the calibration of the indication error of the micrometer head 6 is realized by image processing technology.

[0030] In this patent, the CCD industrial camera 5 is mainly used for the image of the moving line of the micrometer head 6. The selection characteristics of the CCD industrial camera 5 mainly include resolution, pixel size, color depth and exposure time. When the area is fixed, high resolution means that there are more imaging units that can be sensitive to light within a unit area. During exposure, the energy obtained by a single pixel is low, resulting in insufficient exposure or low signal-to-noise ratio. At the same time, high resolution will increase the pressure of data transmission. The pixel size is also directly reflected in the measurement resolution. The color depth and exposure time will affect the acquisition transmission rate. Combined with the image acquisition requirements of the project, the industrial camera 5 is selected according to the object field of view FOV (H or V) = CCD chip size (H or V) / optical magnification. The CCD industrial camera 5 described in this patent intends to use the MV-XG2500GM-T 10G network industrial camera 5, whose pixel size is 2.5×2.5μm, the pixel is 25 million, and the resolution is 5120×5120.

[0031] In this patent, the selection of lens 4 must meet three requirements: the working distance must be moderate; the magnification must be moderate. The higher the optical magnification, the smaller the field of view, and incomplete lines will appear in an image. In addition, there is a negative correlation between optical magnification and working distance; the depth of field must be moderate. If the depth of field is too small, blurred line images are likely to appear. Based on the clarity of the image obtained by the micrometer head 6 and the image processing accuracy requirements, the lens 4 of this patent is intended to use MV-LD-90-30M-A industrial lens 4. The maximum image surface of this lens 4 can reach 43mm, supports 25 million pixel chips, can be adapted to 4K line scan cameras, corresponding to 5μ / 7μ pixels, and has better optical performance than SLR lens 4. Standard focal lengths and magnifications are available.

[0032] In this patent, the main function of the LED parallel light source 8 is to adjust the exposure to obtain high-quality, high-contrast images. Adding a dedicated lighting source can weaken the influence of ambient light, and a reasonable lighting method can reduce the error introduced by the angle when the object being measured is tilted. LED light sources have many advantages such as small size, low energy consumption, low heat, high brightness, long life, environmental protection, and durability. They are currently the most ideal light source choice. The LED parallel light source 8 of this patent intends to use KM-SP2403 white light LED parallel light source 8 to meet the image acquisition requirements of the device micrometer head 6.

[0033] like Figure 1-2 As shown, when tracing the source of the verticality detection ruler calibration device, the special fixture includes a vertical plate 13, and the upper end of the vertical plate 13 is sequentially installed with a CCD industrial camera 5 and a lens 4 from top to bottom, and the middle of the vertical plate 13 is installed with an LED parallel light source 8, and the lower end of the vertical plate 13 is installed with a connecting seat 12, and a column 1 is installed through the connecting seat 12. The lower end of the column 1 is installed on the base 2, and the upper end of the column 1 is installed with a matching fixture 7, and the matching fixture 7 is installed with a micrometer head 6, and the micrometer head 6 is located between the lens 4 and the LED parallel light source 8. A linear displacement sensor is installed on the matching fixture 7, and the linear displacement sensor is used to measure the distance between the guide shaft axis and the rotating shaft axis with the upper surface of the base 2 as the reference. The verticality detection ruler calibration device is an existing device, which is disclosed in patent publication number CN102288098A.

[0034] like Figure 3As shown, when tracing the source of the calibration device of the internal and external right angle detection ruler and the wedge-shaped feeler gauge, the special fixture includes a connecting plate 21 installed on the base 2, a vertical plate 23 is installed at one end of the connecting plate 21, and an LED parallel light source 8 is installed on the vertical plate 23, and an L-shaped plate 22 is installed at the other end of the connecting plate 21, and the vertical part of the L-shaped plate 22 is installed on the connecting plate 21 and the vertical part is located outside the connecting plate 21, and the opening of the L-shaped plate 22 is installed toward the base 2; the matching fixture 7 is a strip column 10 vertically installed on the base 2, and the micrometer 6 and the linear displacement sensor are installed on the strip column 10 to realize the linear displacement sensor to measure the vertical distance from the measuring axis of the micrometer 6 to the working surface of the base 2. Alternatively, the distance from the measuring axis of the micrometer 6 to the working surface of the base 2 can be measured by a depth caliper with the upper surface of the base 2 as the reference.

[0035] In this patent, the verticality calibration of the internal and external right angle detection ruler and the wedge-shaped feeler gauge calibration device is calibrated. First, the verticality of the positioning iron working surface to the working surface of the base 2 is calibrated using a conventional 80mm×50mm wide seat angle ruler. Second, the verticality of the working surface of the column 1 to the working surface of the base 2. When a conventional wide seat angle ruler is used for calibration, the mounting bracket of the indicator will block the measuring surface of the wide seat angle ruler, so that it cannot fit together with the working surface of the column 1, and there is no way to calibrate it. This patent designs a special wide seat angle ruler with a size of 160mm×100mm and a precision of level 1. It cooperates with the feeler gauge to realize the calibration of the verticality of the working surface of the column 1 to the working surface of the base 2.

[0036] In this patent, the measurement software includes an editor, a debugger, a program wizard App Wizard, and a class wizard Class Wizard. The measurement software is intended to be developed using the Visual C++ development tool. The workflow is as follows: Figure 4 The measurement software described in this patent mainly has the functions of parameter setting, real-time image display, automatic calibration, detection result display, data processing and automatic storage, automatic generation of original records, etc., and has the following features:

[0037] 1) Enter the equipment information to be calibrated: serial number, manufacturer, production date, etc.;

[0038] 2) Parameter setting: You can select relevant image parameters and the calibration position of the micrometer head 6 according to the device being inspected;

[0039] 3) Display mode: real-time image display, real-time data display;

[0040] 4) Test parameter saving: different parameters of the equipment are saved separately. When testing the same model of equipment, you only need to load and use them;

[0041] 5) Authority control: The software can control different users to set different authorities to protect parameter security;

[0042] 6) Result display: The test results are directly displayed on the screen area, which is convenient for users to observe;

[0043] 7) Test data export: Each test data can be exported to Excel table, and the data of each test point can be completely saved to facilitate detailed analysis by users;

[0044] 8) Test report: The report can be prepared and printed in the required format.

[0045] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the patent of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the patent of the present invention shall fall within the protection scope of the technical solution of the patent of the present invention.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein by equivalents, but these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online calibration device for a construction engineering quality detector group, which realizes online traceability of verticality detection rulers, internal and external right angle detection rulers, and wedge-shaped feeler gauges, characterized in that: It includes a micrometer calibration system, a special distance measuring system, a verticality calibration system and measurement software; the micrometer calibration system, the special distance measuring system and the verticality calibration system are installed on a base; The micrometer head calibration system comprises a CCD industrial camera, a lens, an LED parallel light source and a special fixture; the special fixture realizes the relative spacing installation of the lens and the LED parallel light source, and the CCD industrial camera is installed on the side of the lens facing away from the LED parallel light source; the micrometer head is installed between the lens and the LED parallel light source, and the online calibration of the micrometer head is realized by moving the micrometer head; The dedicated distance measurement system includes a linear displacement sensor and a matching fixture; the linear displacement sensor and the micrometer head are installed in coordination with the matching fixture to measure the vertical distance from the measuring axis of the micrometer head to the working surface of the base; The verticality calibration system comprises a wide-seat square, a feeler gauge and a step gauge; the wide-seat square, the step gauge and the feeler gauge cooperate to achieve verticality calibration of the internal and external right angle detection ruler and the wedge-shaped feeler gauge calibration device; The data collected by the micrometer calibration system, the special distance measurement system and the verticality calibration system are transmitted to the measurement software, and the measurement software outputs the detection result.

2. The on-line calibration device for a construction engineering quality detector group according to claim 1 is characterized in that: The CCD industrial camera is a 10 Gigabit network industrial camera.

3. The online calibration device for a construction engineering quality detector group according to claim 2 is characterized in that: The lens is an industrial lens.

4. The on-line calibration device for a construction engineering quality detector group according to claim 3 is characterized in that: The LED parallel light source is a white light LED parallel light source.

5. The on-line calibration device for a construction engineering quality detector group according to claim 4, characterized in that: When tracing the source of the verticality detection ruler calibration device, the special fixture includes a vertical plate, a CCD industrial camera and a lens are installed in sequence from top to bottom on the upper end of the vertical plate, an LED parallel light source is installed at the lower middle part of the vertical plate, a connecting seat is installed at the lower end of the vertical plate, a column is installed through the connecting seat, the lower end of the column is installed on the base, a matching fixture is installed on the upper end of the column, a micrometer head is installed on the matching fixture, and the micrometer head is located between the lens and the LED parallel light source.

6. The on-line calibration device for a construction engineering quality detector group according to claim 4, characterized in that: When tracing the source of the internal and external right-angle measuring ruler and the wedge-shaped feeler gauge, the special fixture includes a connecting plate installed on the base, a vertical plate is installed at one end of the connecting plate, an LED parallel light source is installed on the vertical plate, and an L-shaped plate is installed at the other end of the connecting plate. The vertical part of the L-shaped plate is installed on the connecting plate and the vertical part is located outside the connecting plate, and the opening of the L-shaped plate is installed toward the base; the mating fixture is a strip column vertically installed on the base, and a micrometer and a linear displacement sensor are mounted on the strip column to realize the linear displacement sensor to measure the vertical distance from the measuring axis of the micrometer to the working surface of the base.

7. An online calibration device for a construction engineering quality detector group according to any one of claims 5 or 6, characterized in that: The measurement software includes an editor, a debugger, a program wizard App Wizard, and a class wizard Class Wizard.

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