CN108413870A - The method for measuring planar dimension based on substitution method - Google Patents
The method for measuring planar dimension based on substitution method Download PDFInfo
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- CN108413870A CN108413870A CN201810125404.1A CN201810125404A CN108413870A CN 108413870 A CN108413870 A CN 108413870A CN 201810125404 A CN201810125404 A CN 201810125404A CN 108413870 A CN108413870 A CN 108413870A
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- measured
- measurement point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to the methods for measuring planar dimension based on substitution method, on the basis of Theoretical Design distance X0 of this method between the first measurement point A of known product to be measured and the second measurement point B, product to be measured is placed in the coordinate system of measuring system, coordinate system divides the unit measurement zone that several continuous unit values are D, the relative coordinate values of measurement A, B to the unit measurement zone boundary at place；According to formula L=△ X1 △ X2+X；It is that Theoretical Design distance X0 and X0 ± D substitute into calculating by X, obtain three measured values, then three measured values and Theoretical Design distance X0 are compared, the measured value closest to Theoretical Design distance X0 is calculated as the actual range between the first measurement point A of product to be measured and the second measurement point B.The present invention can be used High-precision image and seize the measurement point that device captures product to be measured, using substitution ratio pair is substituted into, after computer carries out conversion processing, obtain the higher product plane size to be measured of precision, measurement is convenient, fast, meets industry utilization.
Description
Technical field
The present invention relates to photoelectric detection technology fields, more particularly, to product plane measurement world.
Background technology
After product processing and fabricating, it is that tool ruler measures, but imitates to need the planar dimension for measuring its correlated characteristic, conventional method
Rate is low, and accuracy is not high.Then there are such as CCD detecting instruments, computer is transferred to after the image by seizing measured object
Upper analyzing processing and conversion, thus to obtain more accurate testing result, high-precision, efficient detection meet modern manufacturing industry
Production requirement.But in the prior art, since image seizes device（CCD）It is structural, captured image surface is bigger, then differentiates
Rate is lower, therefore when measuring the product of larger area, if once having captured the image of product, the point accuracy pole that measures
Big to decline, if capturing the image of product by several times, device moving reference error can be seized by image to be influenced, and equally causes to measure
Point accuracy decline.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, provide a kind of convenient, fast, detection is accurately based on generation
Enter the method that method measures planar dimension.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
Based on the method that substitution method measures planar dimension, this method is measured in the first measurement point A of known product to be measured and second
On the basis of Theoretical Design distance X0 between point B, product to be measured is placed in the coordinate system of measuring system, if coordinate system divides
Continuous unit measurement zone is done, the unit value of unit measurement zone is D, and
The unit measurement zone image where device captures the first measurement point A and the first measurement point A of product to be measured is seized using image,
The first measured value △ X1 are handled and are calculated by computer, which is lists of the first measurement point A to place
The relative coordinate values on position measurement zone boundary；
The unit measurement zone image where device captures the second measurement point B and the second measurement point B of product to be measured is seized using image,
The second measured value △ X2 are handled and are calculated by computer, which is lists of the second measurement point B to place
The relative coordinate values on position measurement zone boundary；
The measurement direction of first measured value △ X1 and the second measured value △ X2 are consistent and in the first measurement point A and the second measurement point B
Between measure line；
Actual range between the first measurement point A and the second measurement point B of product to be measured is：
L=△X1-△X2+X；
It is that Theoretical Design distance X0 and X0 ± D substitute into calculating by X, obtains three measured values, then by three measured values and theory
Designed distance X0 is compared, and the surveys of the first measurement point A and second of product to be measured are calculated as closest to the measured value of Theoretical Design distance X0
Measure the actual range between point B.
In said program, the unit measurement zone is grid, dot matrix, bar code composition, the unit value D of unit measurement zone
More than dimensional tolerance between the first measurement point A and the second measurement point B.
It is provided by the invention based on substitution method measure planar dimension method, can be used High-precision image seize device crawl wait for
The measurement point for surveying product, promotes the point accuracy of measurement, using substitution ratio pair is substituted into, is not seized device moving reference by image and missed
Difference influences, and after computer carries out conversion processing, obtains the higher product plane size to be measured of precision, measures convenient, fast, symbol
Conjunction industry utilizes.
Description of the drawings：
Attached drawing 1 is present pre-ferred embodiments structural schematic diagram.
Specific implementation mode：
Design below with reference to attached drawing to the present invention, the technique effect that concrete structure generates is described further, with abundant
Ground understands the purpose of invention, feature and effect.
As shown in fig.1, the present invention is in relation to a kind of method measuring planar dimension based on substitution method, it is characterised in that：It should
On the basis of Theoretical Design distance X0 of the method between the first measurement point A of known product to be measured and the second measurement point B, it will wait for
It surveys product to be placed in the coordinate system of measuring system, coordinate system divides several continuous unit measurement zones, the unit of unit measurement zone
Value is D, and the unit measurement zone is grid, dot matrix, bar code composition, and the unit value D of unit measurement zone is more than first and measures
Dimensional tolerance between point A and the second measurement point B.And seize the first measurement point A and that device captures product to be measured using image
Unit measurement zone image where one measurement point A handles by computer and is calculated the first measured value △ X1, first measurement
Value △ X1 are relative coordinate values of the first measurement point A to the unit measurement zone boundary at place；It is to be measured that device crawl is seized using image
The the second measurement point B and the unit measurement zone image where the second measurement point B of product, are handled by computer and are calculated second
Measured value △ X2, the second measured value △ X2 are relative coordinate values of the second measurement point B to the unit measurement zone boundary at place.Its
In, the measurement direction of the first measured value △ X1 and the second measured value △ X2 it is consistent and the first measurement point A and the second measurement point B it
Between measure line, when such as measuring the size of X axis, measure the unit measurement zone boundary of the first measurement point A and its left side, measurement the
Two measurement point B are also the unit measurement zone boundary with its left side.
Actual range between the first measurement point A and the second measurement point B of product to be measured is：
L=△X1-△X2+X；
It is that Theoretical Design distance X0 and X0 ± D substitute into calculating by X, obtains three measured values, then by three measured values and theory
Designed distance X0 is compared, and the surveys of the first measurement point A and second of product to be measured are calculated as closest to the measured value of Theoretical Design distance X0
Measure the actual range between point B.
Embodiment：
Assuming that Theoretical Design distance X0 is 300mm, the unit value D of unit measurement zone is 5mm, and it is CCD that image, which seizes device, and image is seized
Device gripping surface is taken to be more than unit measurement zone, image seizes the first measurement point A and the second measurement point B that device captures product to be measured respectively
And the unit measurement zone image at corresponding place, after sending computer to, is handled by computer and measured value △ X1, △ is calculated
Then X2 utilizes formula：L=△ X1- △ X2+X, X are that 300mm, 295mm, 305mm substitute into conversion respectively, obtain three measured values
Then L1, L2, L3 are compared by three measured values and Theoretical Design distance X0, closest to the measured value of Theoretical Design distance X0
The actual range being calculated as between the first measurement point A of product to be measured and the second measurement point B.
The present invention can be used High-precision image and seize the measurement point that device captures product to be measured, and the point for promoting measurement is accurate
Property, using substitution ratio pair is substituted into, not seized device moving reference error by image is influenced, and after computer carries out conversion processing, is obtained
The higher product plane size to be measured of precision is obtained, measurement is convenient, fast, meets industry utilization.
Certainly, the present invention is elaborated above in association with embodiment, only technical concept to illustrate the invention and
Feature can not limit this its object is to allow person skilled in the art to understand present disclosure and be implemented with this
The protection domain of invention, therefore all equivalent change or modifications done according to spirit of the invention should all be covered the present invention's
In protection domain.
Claims (2)
1. the method for measuring planar dimension based on substitution method, it is characterised in that：This method is measured the first of known product to be measured
On the basis of Theoretical Design distance X0 between point A and the second measurement point B, product to be measured is placed in the coordinate system of measuring system
In, coordinate system divides several continuous unit measurement zones, and the unit value of unit measurement zone is D, and
The unit measurement zone image where device captures the first measurement point A and the first measurement point A of product to be measured is seized using image,
The first measured value △ X1 are handled and are calculated by computer, which is lists of the first measurement point A to place
The relative coordinate values on position measurement zone boundary；
The unit measurement zone image where device captures the second measurement point B and the second measurement point B of product to be measured is seized using image,
The second measured value △ X2 are handled and are calculated by computer, which is lists of the second measurement point B to place
The relative coordinate values on position measurement zone boundary；
The measurement direction of first measured value △ X1 and the second measured value △ X2 are consistent and in the first measurement point A and the second measurement point B
Between measure line；
Actual range between the first measurement point A and the second measurement point B of product to be measured is：
L=△X1-△X2+X；
It is that Theoretical Design distance X0 and X0 ± D substitute into calculating by X, obtains three measured values, then by three measured values and theory
Designed distance X0 is compared, and the surveys of the first measurement point A and second of product to be measured are calculated as closest to the measured value of Theoretical Design distance X0
Measure the actual range between point B.
2. the method according to claim 1 for measuring planar dimension based on substitution method, it is characterised in that：The unit measures
Area is that grid, dot matrix, bar code are constituted, the unit value D of unit measurement zone be more than the first measurement point A and the second measurement point B it
Between dimensional tolerance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810125404.1A CN108413870B (en) | 2018-02-08 | 2018-02-08 | Method for measuring plane size based on substitution method |
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| CN201810125404.1A CN108413870B (en) | 2018-02-08 | 2018-02-08 | Method for measuring plane size based on substitution method |
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| CN108413870A true CN108413870A (en) | 2018-08-17 |
| CN108413870B CN108413870B (en) | 2020-04-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254655A (en) * | 2020-11-11 | 2021-01-22 | 北京平恒智能科技有限公司 | Super large-size high accuracy two-dimensional plane measuring equipment |
| CN115143883A (en) * | 2022-06-30 | 2022-10-04 | 北京市测绘设计研究院 | Measuring method and measuring system |
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| CN2570732Y (en) * | 2002-10-11 | 2003-09-03 | 徐春云 | Precision measuring instrument |
| CN201152739Y (en) * | 2007-12-29 | 2008-11-19 | 徐春云 | Measuring instrument |
| CN102607446A (en) * | 2011-10-21 | 2012-07-25 | 中建工业设备安装有限公司 | Method for measuring steel structure welding deformation based on gridding |
| CN104236501A (en) * | 2014-09-22 | 2014-12-24 | 上海市计量测试技术研究院 | Self-calibration method for grid point system error of two-dimensional grid plate |
| CN105387826A (en) * | 2014-07-07 | 2016-03-09 | 通用汽车环球科技运作有限责任公司 | method and apparatus for quantifying dimensional variations and process capability |
| EP3252615A1 (en) * | 2016-06-03 | 2017-12-06 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Method and system for determining cells crossed by a measuring or viewing axis |
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2018
- 2018-02-08 CN CN201810125404.1A patent/CN108413870B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2570732Y (en) * | 2002-10-11 | 2003-09-03 | 徐春云 | Precision measuring instrument |
| CN201152739Y (en) * | 2007-12-29 | 2008-11-19 | 徐春云 | Measuring instrument |
| CN102607446A (en) * | 2011-10-21 | 2012-07-25 | 中建工业设备安装有限公司 | Method for measuring steel structure welding deformation based on gridding |
| CN105387826A (en) * | 2014-07-07 | 2016-03-09 | 通用汽车环球科技运作有限责任公司 | method and apparatus for quantifying dimensional variations and process capability |
| CN104236501A (en) * | 2014-09-22 | 2014-12-24 | 上海市计量测试技术研究院 | Self-calibration method for grid point system error of two-dimensional grid plate |
| EP3252615A1 (en) * | 2016-06-03 | 2017-12-06 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Method and system for determining cells crossed by a measuring or viewing axis |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254655A (en) * | 2020-11-11 | 2021-01-22 | 北京平恒智能科技有限公司 | Super large-size high accuracy two-dimensional plane measuring equipment |
| CN115143883A (en) * | 2022-06-30 | 2022-10-04 | 北京市测绘设计研究院 | Measuring method and measuring system |
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| CN108413870B (en) | 2020-04-28 |
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Effective date of registration: 20230612 Address after: 302, No. 28-1, Shanzhuang Road, Hecun, Dashi Street, Panyu District, Guangzhou, Guangdong 510000 Patentee after: GUANGZHOU GIEZHY MEASUREMENT TECHNOLOGY Co.,Ltd. Address before: No. 318, Huangcaoling, Jinju Village, Dalingshan, Dongguan, Guangdong 523000 Patentee before: DONGGUAN INTELLIGENT AUTOMATION TECHNOLOGY CO.,LTD. |
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