CN105698686A - Device and method of detecting crack width measuring instrument indication value errors - Google Patents
Device and method of detecting crack width measuring instrument indication value errors Download PDFInfo
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- CN105698686A CN105698686A CN201610146676.0A CN201610146676A CN105698686A CN 105698686 A CN105698686 A CN 105698686A CN 201610146676 A CN201610146676 A CN 201610146676A CN 105698686 A CN105698686 A CN 105698686A
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- crack
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- detecting device
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device and a method of detecting crack width measuring instrument indication value errors. The detection device comprises a standard calibration board, wherein the standard calibration board is provided with a plurality of standard cracks of different widths for detecting indication value errors of the crack width measuring instrument. Through arranging the crack width measuring instrument indication value error detection device, before use, the indication value errors of the crack width measuring instrument are detected, use is then carried out only when requirements are met, or otherwise, use is carried out after error requirements are met through adjustment,, and thus, the crack width measuring precision by using the crack width measuring instrument can be improved.
Description
Technical field
The present invention relates to detection technique field, specifically, relate to a kind of New Instrument for Crack Width indication error detection device and method。
Background technology
New Instrument for Crack Width is the instrument of fracture width and surface microscopic defect in specialty detection xoncrete structure, is widely used in the detection by quantitative of the fracture widths such as bridge, tunnel, body of wall, concrete road surface。
In use, display screen and the measuring probe of New Instrument for Crack Width is connected with cable。Open the on and off switch of New Instrument for Crack Width, two legs of measuring probe be placed on crack, on a display screen it can be seen that be exaggerated crack pattern picture, as shown in Figure 1。Somewhat rotate photographic head, make crack pattern picture vertical with rule, graduation mark length shared by crack pattern picture, reads fracture width value。
For reducing error, New Instrument for Crack Width needs verification before use。When error meet require time, instrument can normally use, and therefore, needs a kind of New Instrument for Crack Width error of indication calibrating installation badly。
Summary of the invention
For solving problem above, the invention provides a kind of New Instrument for Crack Width indication error detection device and method, be calibrated for fracture width gage。
According to an aspect of the invention, it is provided a kind of New Instrument for Crack Width indication error detection device, including:
Master scale plate,
Wherein, described master scale plate is provided with the standard crack of some different in width, detects in order to the error of indication of fracture width gage。
According to one embodiment of present invention, the width value in described standard crack is positioned at the minimum and most wide-measuring range that can detect of New Instrument for Crack Width。
According to one embodiment of present invention, the difference between the reverse-concave numerical value in described standard crack is different。
According to one embodiment of present invention, the quantity in described standard crack is be more than or equal to 5。
According to one embodiment of present invention, the length in described standard crack is equal。
According to one embodiment of present invention, be arranged in parallel between described standard crack also interval constant spacing。
According to one embodiment of present invention, the material that described master scale plate is selected is not affected by temperature and humidity。
According to one embodiment of present invention, described master scale plate is lamella lucida。
According to one embodiment of present invention, described master scale plate is opaque plate。
According to another aspect of the present invention, additionally provide a kind of New Instrument for Crack Width indication error detection method adopting the described detecting device of any of the above item, including:
Tested New Instrument for Crack Width is adopted repeatedly to measure the measurement width value in also all standard cracks of record standard graduated tile；
According to measuring width value, the measurement width meansigma methods that variant width criteria crack that computation and measurement obtains is corresponding；
The measurement width meansigma methods in the actual nominal value according to standard crack and corresponding standard crack, calculates the New Instrument for Crack Width error of indication。
Beneficial effects of the present invention:
The present invention is by arranging New Instrument for Crack Width indication error detection device, and before the use, the error of indication of fracture width gage detects, meet and require just to use, otherwise, calibration re-uses after meeting error requirements, such that it is able to improve the precision using New Instrument for Crack Width to measure fracture width。
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from description, or understand by implementing the present invention。The purpose of the present invention and other advantages can be realized by structure specifically noted in description, claims and accompanying drawing and be obtained。
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below accompanying drawing required during embodiment is described is done simple introduction:
Fig. 1 is the use schematic diagram of New Instrument for Crack Width in prior art；
Fig. 2 is New Instrument for Crack Width indication error detection device structural representation according to an embodiment of the invention；And
Fig. 3 is the detection method flow chart of employing New Instrument for Crack Width indication error detection device according to an embodiment of the invention。
Detailed description of the invention
Describing embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the process that realizes reaching technique effect can fully understand and implement according to this。As long as it should be noted that do not constitute conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention。
Being illustrated in figure 2 New Instrument for Crack Width indication error detection device structural representation according to an embodiment of the invention, below with reference to Fig. 2, the present invention is described in detail。
This New Instrument for Crack Width indication error detection device includes master scale plate 1 and the standard crack of some different in width arranged on master scale plate, detects in order to the error of indication of fracture width gage。When the error of indication of New Instrument for Crack Width meets requirement, as, during less than 0.02mm, can normally used。Before the use, the error of indication of fracture width gage detects, and meets and requires just to use, and otherwise, calibration re-uses after meeting error requirements, such that it is able to improve the certainty of measurement in crack。
In one embodiment of the invention, on master scale plate, the width value in standard crack is positioned at the minimum and most wide-measuring range that can detect of New Instrument for Crack Width。It is to say, the width value in standard crack is within the scope of the measurement of fracture width instrument, and it is not less than the resolution of fracture width instrument。Otherwise, the width value in standard crack is more than the measurement scope maximum of fracture width instrument, or the measurement stated range minimum (i.e. resolution) less than fracture width instrument, all cannot normally detect and show fracture width。Generally, the width in standard crack includes maximum and the minima that fracture width instrument can be measured。
In one embodiment of the invention, on master scale plate, difference between the reverse-concave numerical value in standard crack is different。It is to say, the width difference in each standard crack on master scale plate, and, the difference between each width value is also different。Such as, some standard fracture width values on a certain master scale plate are: 0.02mm, 0.10mm, 0.20mm, 1.00mm etc., the width value in these standard cracks is not etc., and the difference between reverse-concave value is followed successively by: 0.08mm, 0.1mm, 0.8mm, each difference is also unequal, so arranging the measurement error that can increase New Instrument for Crack Width, the error recorded under measurement error maximum case meets requirement, then the error recorded under normal conditions necessarily meets requirement。Certainly, difference between standard crack reverse-concave value is it can also be provided that identical herein, but it cannot be guaranteed that occurs maximum measurement error in this case。
In one embodiment of the invention, the quantity in the standard crack on master scale plate is be more than or equal to 5。It is to say, for showing error during New Instrument for Crack Width measurement different in width crack, it is necessary to a plurality of standard crack is set and detects。Certainly, standard crack quantity is more many, and the detection of New Instrument for Crack Width is also more accurate。But, it is generally the case that also without too much arranging standard crack, make and testing cost in order to avoid increasing。Generally, can arranging the standard crack no less than 5, the standard crack of increase suitably increases according to the measurement scope of New Instrument for Crack Width。As in figure 2 it is shown, be provided with 5 standard cracks 11,12,13,14 and 15 on this master scale plate 1, and the width in each bar standard crack is different。It should be noted that the width value in the standard crack on master scale plate is positioned at the minimum and most wide-measuring range that can detect of New Instrument for Crack Width, and also to include the minimum and Breadth Maximum value that can detect of New Instrument for Crack Width。
In one embodiment of the invention, on master scale plate, the length in standard crack is equal。It is to say, the width in standard crack is different on master scale plate, but length is equal, and the standard crack so made is neatly regular, and master scale plate shape rule, it is simple to design, as in figure 2 it is shown, be disposed as same length value b by the length in all standard cracks。For example, it is possible to be set to 20mm by unified for the length b in all of standard crack。
In one embodiment of the invention, master scale plate be arranged in parallel between standard crack also interval constant spacing。Concrete, for reducing the volume of master scale plate, standard crack thereon is be arranged in parallel。Further, for being conducive to fracture width gage to detect, fixed value a will be set between the standard crack on master scale plate, as shown in Figure 2。Such as, the spacing a between each standard crack can be set to 10mm or other numerical value fixed。
In one embodiment of the invention, the material that master scale plate is selected is not affected by temperature and humidity。Due to be using the standard crack on master scale plate as detection New Instrument for Crack Width benchmark, need standard crack thereon accurate as much as possible, the material of this master scale plate being accomplished by making standard crack agree to the greatest extent to stablize, as much as possible not by the impact of the environmental factors such as temperature, humidity, the width in standard crack thereon does not change as much as possible。Such as, the material that master scale plate is selected can be selected and stable be affected unconspicuous organic clear glass or other stabilizing materials by temperature, humidity, the master scale plate of its respective production can be lamella lucida, it is also possible to for opaque plate, it is possible to according to using environmental selection。
The present invention is by arranging New Instrument for Crack Width indication error detection device, and before the use, the error of indication of fracture width gage detects, meet and require just to use, otherwise, calibration re-uses after meeting error requirements, such that it is able to improve the precision using New Instrument for Crack Width to measure fracture width。
According to another aspect of the present invention, a kind of New Instrument for Crack Width indication error detection method adopting the above detecting device is additionally provided。Being illustrated in figure 3 method flow diagram according to an embodiment of the invention, below with reference to Fig. 3, the present invention is described in detail。
Before the detecting device fracture width gage adopting the present invention carries out error of indication detection, it is necessary to relevant detection part is connected together。Concrete, tested New Instrument for Crack Width is connected microstrain sensor, with standard crack to be measured on microstrain sensor alignment criteria graduated tile, and the leg of microstrain sensor is close to the surface of master scale plate。
New Instrument for Crack Width is made to be operated under shooting state, mobile microstrain sensor, make the standard crack to be measured on master scale plate be positioned at center Screen, treat that image is steady and audible, the shutter key pressing photographic head obtains still image。The error of indication of New Instrument for Crack Width is detected based on this still image。
When fracture width gage carries out error of indication detection, first, in step s 110, tested New Instrument for Crack Width is adopted repeatedly to measure the measurement width value in also all standard cracks of record standard graduated tile。
Concrete, the repeatedly width in same standard crack in measurement standard graduated tile, and each measurement width value is recorded。In this step, all standard cracks on master scale plate are all carried out identical process。It is noted that when the same standard crack of repetitive measurement, can suitably move microstrain sensor, standard crack to be measured is again generally within center Screen, after image stabilization, again obtaining still image, the still image that obtains again detects the measured value in same standard crack。
It follows that in the step s 120, according to measuring width value, the measurement width meansigma methods that variant width criteria crack that computation and measurement obtains is corresponding。By this step, it is possible to obtain the measurement width meansigma methods in each bar standard crack on this master scale plate。
Finally, in step s 130, the measurement width meansigma methods according to the actual nominal value in standard crack and corresponding standard crack, calculate the New Instrument for Crack Width error of indication。
Concrete, calculate the actual nominal value in each standard crack and New Instrument for Crack Width to should the error of indication that measure width meansigma methods in standard crack by below formula (1):
Wherein, Δ x represents the error of indication of fracture width, mm；Represent the meansigma methods of three measured values of i-th standard fracture width, mm；Xi0Represent the width nominal value in i-th standard crack, mm on master scale plate。Only when the error of indication in standard cracks all on master scale plate meets error requirements (such as 0.05mm), this New Instrument for Crack Width is adopted and is met error requirements, can normally use。
While it is disclosed that embodiment as above, but described content is only to facilitate the embodiment understanding the present invention and adopt, is not limited to the present invention。Technical staff in any the technical field of the invention; under the premise without departing from spirit and scope disclosed in this invention; any amendment and change can be done in the formal and details implemented; but the scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims defines。
Claims (10)
1. a New Instrument for Crack Width indication error detection device, including:
Master scale plate,
Wherein, described master scale plate is provided with the standard crack of some different in width, detects in order to the error of indication of fracture width gage。
2. detecting device according to claim 1, it is characterised in that the width value in described standard crack is positioned at the minimum and most wide-measuring range that can detect of New Instrument for Crack Width。
3. detecting device according to claim 1 and 2, it is characterised in that the difference between the reverse-concave numerical value in described standard crack is different。
4. the detecting device according to any one of claim 1-3, it is characterised in that the quantity in described standard crack is be more than or equal to 5。
5. the detecting device according to any one of claim 1-4, it is characterised in that the length in described standard crack is equal。
6. the detecting device according to any one of claim 1-5, it is characterised in that be arranged in parallel between described standard crack and interval constant spacing。
7. the detecting device according to any one of claim 1-6, it is characterised in that the material that described master scale plate is selected is not affected by temperature and humidity。
8. detecting device according to claim 7, it is characterised in that described master scale plate is lamella lucida。
9. detecting device according to claim 7, it is characterised in that described master scale plate is opaque plate。
10. adopt a New Instrument for Crack Width indication error detection method for detecting device according to any one of above claim 1-9, including:
Tested New Instrument for Crack Width is adopted repeatedly to measure the measurement width value in also all standard cracks of record standard graduated tile；
According to measuring width value, the measurement width meansigma methods that variant width criteria crack that computation and measurement obtains is corresponding；
The measurement width meansigma methods in the actual nominal value according to standard crack and corresponding standard crack, calculates the New Instrument for Crack Width error of indication。
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| CN201610146676.0A CN105698686A (en) | 2016-03-15 | 2016-03-15 | Device and method of detecting crack width measuring instrument indication value errors |
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| CN201610146676.0A CN105698686A (en) | 2016-03-15 | 2016-03-15 | Device and method of detecting crack width measuring instrument indication value errors |
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| CN105698686A true CN105698686A (en) | 2016-06-22 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106835918A (en) * | 2017-04-07 | 2017-06-13 | 吉林大学 | The slide block type verifying attachment of vehicle-mounted road surface flaw detection system |
| CN106840060A (en) * | 2017-04-07 | 2017-06-13 | 吉林大学 | The verifying attachment of reference block combined type vehicle-mounted road surface flaw detection system |
| CN106868998A (en) * | 2017-04-07 | 2017-06-20 | 吉林大学 | The verifying attachment of round bar array vehicle-mounted road surface flaw detection system |
| CN108318671A (en) * | 2018-05-06 | 2018-07-24 | 吉林大学 | Become the vehicle-mounted road surface flaw detection system verifying attachment on pose road surface based on six bars |
| CN108318309A (en) * | 2018-05-06 | 2018-07-24 | 吉林大学 | Based on the vehicle-mounted road surface flaw detection system verifying attachment for becoming radian road surface |
| CN108360347A (en) * | 2018-05-06 | 2018-08-03 | 吉林大学 | Become the vehicle-mounted road surface flaw detection system verifying attachment on pose road surface based on seven bars |
| CN108396620A (en) * | 2018-05-06 | 2018-08-14 | 吉林大学 | Vehicle-mounted road surface flaw detection system verifying attachment based on eccentric adjustment |
| CN109990712A (en) * | 2019-03-28 | 2019-07-09 | 唐山钢铁集团有限责任公司 | A kind of width gage on-line calibration method |
| CN111366115A (en) * | 2020-03-18 | 2020-07-03 | 青岛海信宽带多媒体技术有限公司 | Method for measuring waveguide width of laser |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835918A (en) * | 2017-04-07 | 2017-06-13 | 吉林大学 | The slide block type verifying attachment of vehicle-mounted road surface flaw detection system |
| CN106840060A (en) * | 2017-04-07 | 2017-06-13 | 吉林大学 | The verifying attachment of reference block combined type vehicle-mounted road surface flaw detection system |
| CN106868998A (en) * | 2017-04-07 | 2017-06-20 | 吉林大学 | The verifying attachment of round bar array vehicle-mounted road surface flaw detection system |
| CN108318671A (en) * | 2018-05-06 | 2018-07-24 | 吉林大学 | Become the vehicle-mounted road surface flaw detection system verifying attachment on pose road surface based on six bars |
| CN108318309A (en) * | 2018-05-06 | 2018-07-24 | 吉林大学 | Based on the vehicle-mounted road surface flaw detection system verifying attachment for becoming radian road surface |
| CN108360347A (en) * | 2018-05-06 | 2018-08-03 | 吉林大学 | Become the vehicle-mounted road surface flaw detection system verifying attachment on pose road surface based on seven bars |
| CN108396620A (en) * | 2018-05-06 | 2018-08-14 | 吉林大学 | Vehicle-mounted road surface flaw detection system verifying attachment based on eccentric adjustment |
| CN109990712A (en) * | 2019-03-28 | 2019-07-09 | 唐山钢铁集团有限责任公司 | A kind of width gage on-line calibration method |
| CN111366115A (en) * | 2020-03-18 | 2020-07-03 | 青岛海信宽带多媒体技术有限公司 | Method for measuring waveguide width of laser |
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