CN104251671A - Real-timely corrected high-precision measurement method and device - Google Patents
Real-timely corrected high-precision measurement method and device Download PDFInfo
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- CN104251671A CN104251671A CN201410480758.XA CN201410480758A CN104251671A CN 104251671 A CN104251671 A CN 104251671A CN 201410480758 A CN201410480758 A CN 201410480758A CN 104251671 A CN104251671 A CN 104251671A
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Abstract
The invention relates to the technical field of measurement, in particular to a real-timely corrected high-precision measurement method and device. The device is characterized in that a second camera lens is vertically erected above a measurement worktable, and an optical axis of the second camera lens penetrates through a reflecting mirror and then is transmitted to the measurement worktable; a first camera lens is arranged on a reflecting direction rack of the reflecting mirror, and the first camera lens and the second camera lens are connected to a computer. When the device works, the first camera lens grabs a predication unit image of a measured object, the second camera lens grabs a local single body on the predication unit image of the measured object grabbed by the first camera lens, the overall dimension A of the single body grabbed by the second camera lens is measured, the overall dimension A' of the corresponding part in the first camera lens is measured, a ratio of the overall dimensions A and A' forms a correction factor, and the correction factor is stored in a computer; the overall dimension on the predication unit image of the measured object grabbed by the first camera lens is measured, and the correction factor is multiplied by the measurement value by a computer to obtain an actual value. The real-timely corrected high-precision measurement method and device provided by the invention have the advantages of real-timely corrected measurement, high precision and quick speed.
Description
Technical field
The present invention relates to field of measuring technique, especially relate to the technical field that photoelectric technology measures object overall size.
Background technology
Along with the development of science and technology, propose more and more higher requirement to precision positioning measurement, thus traditional vernier caliper or spiral measuring instrument are difficult to meet measures requirement.There is photoelectric measurement subsequently, utilize image to seize camera lens (as CCD) and the image of measured object is converted to electronic signal, electronic signal delivers to computer again, by the picture processing chip of computer, Nonlinear magnify is shown over the display, recycling computer three-dimensional coordinate correspondence catches to be measured, this mode can reduce measuring error, improving measurement accuracy.In existing photoelectric measurement, the camera lens of different multiplying, its measuring accuracy is variant again.The camera lens measuring surface of low range is large, and speed is fast, but precision is relatively low; Powerful camera lens measuring surface is little, and speed is slow, but precision is relatively high.In this context, the spirit that the applicant adheres to research and innovation, keeps on improving, utilizes its professional eye and professional knowledge, works out a kind of high-precision measuring method and device of real time correction, namely proposes this case application.
Summary of the invention
The object of the present invention is to provide a kind of high precision and low precision to coexist, utilize correction coefficient automatically to measurement real time correction, thus improve the high-precision measuring method of measuring speed and efficiency, and the device providing a kind of applicable real time correction to measure.
For achieving the above object, the present invention adopts following technical scheme:
A high-precision measuring method for real time correction, the method comprises the steps:
1), with the first camera lens seize the predicting unit image of measured object, be sent to computer display to be measured;
2), with the second camera lens seize the first camera lens seize local monomer on the predicting unit image of measured object, be sent to computer display to be measured, the precision of the second camera lens is higher than the first camera lens;
3) overall size A on monomer that the second camera lens seizes, is measured, and measure the first camera lens seize measured object predicting unit image on the overall size A ' of corresponding position, the overall size A obtained measured by the monomer subsequently the second camera lens seized and the first camera lens seize measured object predicting unit image on measured by obtain corresponding position overall size A ' ratio form correction coefficient, stored in computer;
4) measure, routinely the first camera lens seize overall size on the predicting unit image of measured object, computer, automatically by correction coefficient and this measured value product, obtains actual value, namely completes correcting measuring.
In such scheme, preferably described first camera lens and the second camera lens coaxially seize image.
The device that a kind of applicable real time correction is measured, include surveying work platform, directly over surveying work platform, vertical rack is provided with the second camera lens, the optical axis of the second camera lens is through directive surveying work platform after a catoptron, the reflection direction erection of catoptron has the first camera lens, and the optical axis of the first camera lens reflexes to surveying work platform through catoptron; First camera lens and the second camera lens are all connected to computer.
The present invention has that technique is simple, Fast Correction and advantage easy to use; Correction coefficient is formed according to ratio between high precision monomer profiles and the corresponding profile of low precision, computer can be realized to correction during low precision measure, not only solve low precision camera lens and measure time error problem, also improve measuring speed and efficiency, this brings great convenience to actual production, makes it have application prospect widely.
Present invention also offers structure simple, the device of easily making and applicable real time correction measurement easy to use, meet industry and utilize, contribute to promoting estate surveying work, precision is high, and speed is fast, has splendid Social benefit and economic benefit.
accompanying drawing illustrates:
Accompanying drawing 1 is that image schematic diagram (denote the second camera lens in figure and seize picture position) seized by the first camera lens of one embodiment of the present invention;
Accompanying drawing 2 is that in Fig. 1 embodiment, monomer image schematic diagram seized by the second camera lens;
Accompanying drawing 3 is the apparatus structure schematic diagram of present pre-ferred embodiments.
embodiment:
For making structure of the present invention, feature and advantage more clear, existing by reference to the accompanying drawings package unit and method to be described in further detail, but to should not be construed as the task of scope is limited.
Consult shown in Fig. 1,2,3, the present invention is about a kind of high-precision measuring method of real time correction and device, device includes surveying work platform 1, directly over surveying work platform 1, vertical rack is provided with the second camera lens 3, the optical axis of the second camera lens 3 is through directive surveying work platform 1 after a catoptron 4, the reflection direction erection of catoptron 4 has the optical axis of the first camera lens 2, first camera lens 2 to reflex to surveying work platform 1 through catoptron 4; First camera lens 2 and the second camera lens 3 are all connected to computer.Shown in Fig. 3, in the present embodiment, catoptron 4 is semi-transparent semi-reflecting form, and satisfied first camera lens 2 and the second camera lens 3 carry out image to the measured object be placed on surveying work platform 1 and seizes, surveying work platform 1 is furnished with respective sources (not shown), to increase image effect; First camera lens 2, second camera lens 3 and catoptron 4 are fixed together by a holder 5, and position is relatively fixing, and Stability Analysis of Structures, serviceability is good.
High-precision measuring method for real time correction of the present invention comprises the steps:
1), with the first camera lens seize the predicting unit image of measured object, be sent to computer display (as shown in Figure 1) to be measured;
2), with the second camera lens seize the first camera lens seize local monomer on the predicting unit image of measured object, be sent to computer display to be measured, the precision of the second camera lens is higher than the first camera lens; And preferably the first camera lens and the second camera lens coaxially seize image, like this can raising efficiency and degree of accuracy;
3) a certain overall size A on monomer that the second camera lens seizes, is measured arbitrarily, and measure the first camera lens seize measured object predicting unit image on the overall size A ' of corresponding position, the overall size A obtained measured by the monomer subsequently the second camera lens seized and the first camera lens seize measured object predicting unit image on measured by obtain corresponding position overall size A ' ratio form correction coefficient, stored in computer;
4) measure, routinely the first camera lens seize overall size on the predicting unit image of measured object, computer, automatically by correction coefficient and this measured value product, obtains actual value, namely completes correcting measuring.
Shown in Fig. 1,2,3, to measure mesh size on screen cloth, screen cloth to be measured is placed into after on surveying work platform 1, the predicting unit image of screen cloth is seized with the first camera lens 2, be sent to computer display (as shown in Figure 1) to be measured, this image can be contains whole screen cloth, also can be the some of screen cloth, obtains enough large measuring surface to facilitate in an image; Again the second camera lens 3 seize the first camera lens seize local monomer (the Q region as in Fig. 1) on the predicting unit image of measured object, be sent to computer display to be measured, the precision of the second camera lens, higher than the first camera lens, is equivalent to partial enlargement; At this moment overall size A on monomer that the second camera lens seizes is measured, and measure the first camera lens seize measured object predicting unit image on the overall size A ' of corresponding position, overall size A and A ' can be the limit size, radius size etc. of mesh, does not do to limit at this.The overall size A obtained measured by the monomer subsequently the second camera lens seized and the first camera lens seize measured object predicting unit image on measured by obtain corresponding position overall size A ' ratio form correction coefficient S, S=A/ A ', stored in computer; Last measure one by one routinely again the first camera lens seize respective profile size on the predicting unit image of screen cloth, computer is then automatic by correction coefficient S and this measured value product, obtain the physical size value of this profile, namely complete real time correction to measure, solve low precision camera lens thus and measure time error problem, utilize the large visual field of low precision camera lens simultaneously, improve measuring speed and efficiency.
Although describe preferred embodiment of the present invention by reference to the accompanying drawings, the present invention should not be restricted to and above description and the identical structure of accompanying drawing and operation.Concerning those skilled in the art; also can make many improvement and change to above-described embodiment when not exceeding design of the present invention and scope by logical analysis, reasoning, or a limited experiment, but these improve and change all should belong to the scope of protection of present invention.
Claims (3)
1. a high-precision measuring method for real time correction, is characterized in that: the method comprises the steps:
1), with the first camera lens seize the predicting unit image of measured object, be sent to computer display to be measured;
2), with the second camera lens seize the first camera lens seize local monomer on the predicting unit image of measured object, be sent to computer display to be measured, the precision of the second camera lens is higher than the first camera lens;
3) overall size A on monomer that the second camera lens seizes, is measured, and measure the first camera lens seize measured object predicting unit image on the overall size A ' of corresponding position, the overall size A obtained measured by the monomer subsequently the second camera lens seized and the first camera lens seize measured object predicting unit image on measured by obtain corresponding position overall size A ' ratio form correction coefficient, stored in computer;
4) measure, routinely the first camera lens seize overall size on the predicting unit image of measured object, computer, automatically by correction coefficient and this measured value product, obtains actual value, namely completes correcting measuring.
2. the high-precision measuring method of a kind of real time correction according to claim 1, is characterized in that: described first camera lens and the second camera lens coaxially seize image.
3. the device of an applicable real time correction measurement, include surveying work platform (1), it is characterized in that: directly over surveying work platform (1), vertical rack is provided with the second camera lens (3), the optical axis of the second camera lens (3) is through a catoptron (4) directive surveying work platform (1) afterwards, the reflection direction erection of catoptron (4) has the first camera lens (2), and the optical axis of the first camera lens (2) reflexes to surveying work platform (1) through catoptron (4); First camera lens (2) and the second camera lens (3) are all connected to computer.
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| CN201410480758.XA CN104251671A (en) | 2014-09-19 | 2014-09-19 | Real-timely corrected high-precision measurement method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154537A (en) * | 2017-12-25 | 2018-06-12 | 南京鑫业诚智能科技有限公司 | A kind of bearing calibration of big visual field rapid detection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188917A (en) * | 2000-12-22 | 2002-07-05 | Fuji Heavy Ind Ltd | Attitude angle detecting device for flight vehicle |
| CN1963379A (en) * | 2006-12-01 | 2007-05-16 | 上海电缆研究所 | Method for precision measuring dimension of object using optical imaging measuring system |
| CN101509759A (en) * | 2009-01-15 | 2009-08-19 | 上海交通大学 | Self-demarcating system and method for vision detecting system |
| US20100214639A1 (en) * | 2009-02-23 | 2010-08-26 | Visiongate, Inc. | Optical tomography system with high-speed scanner |
| CN102661722A (en) * | 2012-05-16 | 2012-09-12 | 浙江大学 | Image overlaying-based thin sheet part contour automatic detection head and method |
| CN102809347A (en) * | 2011-06-01 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | Multiplying-power multi-form scale marking system and method |
| CN103578097A (en) * | 2012-07-30 | 2014-02-12 | 中国科学院光电研究院 | Dual-waveband high-low resolution collaborative target identification device |
-
2014
- 2014-09-19 CN CN201410480758.XA patent/CN104251671A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002188917A (en) * | 2000-12-22 | 2002-07-05 | Fuji Heavy Ind Ltd | Attitude angle detecting device for flight vehicle |
| CN1963379A (en) * | 2006-12-01 | 2007-05-16 | 上海电缆研究所 | Method for precision measuring dimension of object using optical imaging measuring system |
| CN101509759A (en) * | 2009-01-15 | 2009-08-19 | 上海交通大学 | Self-demarcating system and method for vision detecting system |
| US20100214639A1 (en) * | 2009-02-23 | 2010-08-26 | Visiongate, Inc. | Optical tomography system with high-speed scanner |
| CN102809347A (en) * | 2011-06-01 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | Multiplying-power multi-form scale marking system and method |
| CN102661722A (en) * | 2012-05-16 | 2012-09-12 | 浙江大学 | Image overlaying-based thin sheet part contour automatic detection head and method |
| CN103578097A (en) * | 2012-07-30 | 2014-02-12 | 中国科学院光电研究院 | Dual-waveband high-low resolution collaborative target identification device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154537A (en) * | 2017-12-25 | 2018-06-12 | 南京鑫业诚智能科技有限公司 | A kind of bearing calibration of big visual field rapid detection system |
| CN108154537B (en) * | 2017-12-25 | 2020-09-29 | 南京鑫业诚智能科技有限公司 | Correction method of large-visual-field rapid detection system |
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Application publication date: 20141231 |