CN104463888A - Crack width change monitoring device and method - Google Patents
Crack width change monitoring device and method Download PDFInfo
- Publication number
- CN104463888A CN104463888A CN201410795319.8A CN201410795319A CN104463888A CN 104463888 A CN104463888 A CN 104463888A CN 201410795319 A CN201410795319 A CN 201410795319A CN 104463888 A CN104463888 A CN 104463888A
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- monitoring
- marking plate
- mobile phone
- crack
- side marking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30132—Masonry; Concrete
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a crack width change monitoring device and method, and relates to a crack monitoring technology in engineering mechanics. The crack width change monitoring device comprises a monitoring region (00), a left identification plate (10), a right identification plate (20), a mobile phone (30), a transmission line (40) and a computer (50). In the monitoring region (00), the left side and the right side of a crack (11) are provided with the left identification plate (10) and the right identification plate (20) respectively, the mobile phone (30) takes photos of the monitoring region (00), and the mobile phone (30), the transmission line (40) and the computer (50) are sequentially connected. According to the crack width change monitoring device and method, the mobile phone can be carried with users to be used for scanning two-dimension codes and taking photos, the device is convenient to carry and fast and convenient to operate, and monitoring efficiency is improved; the photos are uploaded to the computer, and a program processes the photos automatically and computes the crack width monitoring result; the device is high in monitoring accuracy, remarkable in economical benefits and easy to popularize.
Description
Technical field
The present invention relates to the fracture monitoring technique in engineering mechanics, particularly relate to a kind of fracture width change monitoring device and method thereof.
Specifically, in industries such as highway, railway, water power, mine and subways, the present invention can to xoncrete structure crackings such as tunnel-liner, slope earth-retaining wall and friction piles and other various fracture width develops, Changing Pattern is effectively monitored, be applicable to the monitoring of the rear fracture width spread scenarios of various structure cracking, comprise Safety monitoring during construction period and operation phase health monitoring.
Technical background
For guaranteeing the security of engineering construction and operation, monitoring being carried out to malformation essential, especially effectively can avoid the generation of accident in construction to the various fracture width monitoring of structure, the security during judging operation of engineering projects.Therefore, under these circumstances, for reducing the cost of fracture width monitoring, improve the convenience of monitoring accuracy and monitoring method, mobile with under the background of computer technology means fast development, based on mobile phone photograph and computer image processing technology, a kind of Crack Monitoring device of practicality has been suggested, and can be widely applied in engineering practice.
Fracture width Changing Pattern intuitively reflects structure steady state (SS), for engineering construction provides safeguard, for next stage arrangement and method for construction formulation and structure punishment provide foundation.Meanwhile, in order to overcome, current Crack Monitoring method is heavy is subject to the deficiencies such as operating personnel affect with monitoring result, and the fracture width monitoring device studying a kind of simple operation, monitoring accuracy stable is significant.
Summary of the invention
Object of the present invention is just to overcome the shortcoming and defect that prior art exists, and provides a kind of fracture width change monitoring device and method thereof of the practicality based on mobile phone photograph and computer image processing technology; The present invention is simple to operate, convenient data processing, is applicable to various structure fracture width long term monitoring; And cost is very cheap, be easy to carry, be easy to apply.
The present invention is by the following technical solutions:
This device comprises monitored area, left side marking plate, right side marking plate, mobile phone, transmission line and computer;
In monitored area, be respectively arranged with left side marking plate and right side marking plate in the left and right sides in crack, mobile phone is taken pictures to monitored area, and mobile phone, transmission line are connected successively with computer.
Compared with prior art, the present invention has the following advantages and good effect:
1. the marking plate processing of this device is simple, and cost of manufacture is cheap, and on-the-spot laying is convenient, and diaphragm can strengthen its durability;
2. utilize the mobile telephone scanning Quick Response Code carried with and take a picture, easy to carry, simple operation, special monitoring equipment need not be increased, remove the troublesome operation flow process using special monitoring equipment from, not be used in severe monitoring of environmental and copy Monitoring Data, improve monitoring efficiency;
3. photo reached computer, program will process automatically, calculate fracture width monitoring result;
4. set up the target disc of known diameter length in pattern as object of reference, can directly obtain fracture width spread scenarios by the spacing in the target center of circle, and precision is very high;
5. proof is tested, single target disc diameter is 20mm, 1,300 ten thousand pixel mobile phones are adopted to take pictures, to the spacing of two target centers repeatedly shooting results as sample, processed by the image processing flow method based on least square, the sample standard deviation variance obtained can reach 0.007mm, can meet the object of fracture wide variety rule monitoring completely;
6. this apparatus structure is simple, and easy to carry, durable in use, work efficiency is high, and monitoring accuracy is high, remarkable in economical benefits, is easy to promote.
Accompanying drawing explanation
Fig. 1 is the structural representation of this device;
Fig. 2 .1 is the structural representation of left side marking plate;
Fig. 2 .2 is the A-A cut-open view of Fig. 2 .1;
Fig. 3 is the patterned arrangement figure of left side marking plate;
Fig. 4 is the patterned arrangement of right side marking plate and concrete dimension mark figure;
Fig. 5 is the workflow diagram of computer.
In figure:
00-monitored area,
01-crack;
10-left side marking plate;
11-diaphragm;
12-pattern plate,
121-target disc, 122-Quick Response Code, 123-numbering, 124-background;
13-adhesive sticker,
131-surfacing, 132-bonding agent, 133-base stock;
20-right side marking plate;
30-mobile phone;
40-transmission line;
50-computer.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, device
1, overall
As Fig. 1, this device comprises monitored area 00, left side marking plate 10, right side marking plate 20, mobile phone 30, transmission line 40 and computer 50;
In monitored area 00, be respectively arranged with left side marking plate 10 and right side marking plate 20 in the left and right sides in crack 11, mobile phone 30 couples of monitored area B take pictures, and mobile phone 30, transmission line 40 are connected successively with computer 50.
2, functional part
1) left side marking plate 10
As Fig. 2 .1, Fig. 2 .2, Fig. 3, left side marking plate 10 comprises the diaphragm 11, pattern plate 12 and the adhesive sticker 13 3 layers that connect successively from outside to inside;
Diaphragm 11 is general transparent membrane;
Pattern plate 12 comprises target disc 121, Quick Response Code 122, numbering 123 and background 124;
Adhesive sticker 13 is made up of surfacing 131, bonding agent 132 and base stock 133 3 layers.
2) right side marking plate 20
Right side marking plate 20 is identical with left side marking plate 10 structure, rotational symmetry each other.
3) mobile phone 30
Mobile phone 30 is a kind of mobile phones with camera function, and pixel is greater than 1,000 ten thousand.
4) transmission line 40
Transmission line 40 is general-purpose data line.
5) computer 50
Hardware configuration: ordinary PC, CPU is Intel PIII or more than Athlon XP, internal memory more than 256M; Computer system requires configuration mouse, so that interactive operation.
Software: operating system is Windows NT, Windows XP, Windows7, and image processing software is based on Python2.7.2 designed, designed.
3, working mechanism:
First, left side dial plate 10 and right side marking plate 20 are pasted on both sides, crack 01; Then, taken pictures by mobile phone 30 pairs of both sides marking plates, and with transmission line 40, photo is stored in computer 50; Then, the distance in left side dial plate 10 and right side marking plate 20 between target disc 121 center of circle is calculated; Finally, by repeatedly regularly taking pictures and the multiple target discs 121 distance of center circle distance values calculated, reach the object of fracture wide variety monitoring.
Two, method
This method has comprised descending step:
Crack 01 scale of 1. monitoring as required and the monitoring accuracy of requirement, set the pattern 12 of suitable size, especially specifies suitable target disc 121 diameter, and notice that white is target, and black is background 124;
2. the pattern 12 of setting is printed on adhesive sticker 13, and coldly on pattern 12 mounts layer protecting film 11, strengthen marking plate permanance;
3. a pair identical marking plate of numbering 123 (comprising left side marking plate 10 and right side marking plate 20) is found out at the scene, tear base stock 133, left side marking plate 10 and right side marking plate 20 are pasted onto the both sides (require that sticking area is clean, dry, both sides marking plate is drawn close to location of cracks as far as possible) of monitoring crack 01 respectively;
4. mobile phone 30 pairs of monitored areas 00 are utilized to take pictures, scan Quick Response Code 122 simultaneously, guarantee scope of taking pictures only comprises both sides marking plate as far as possible, for improving the stability of monitoring result and reduction error, same Crack Monitoring region can be clapped several times more, filename saves as Quick Response Code 122 surface sweeping result, and scanning result is consistent with numbering 123;
5. storage picture in mobile phone 30 is reached computer 50 by transmission line line 40, the image processing flow method proposed by the present invention is processed.
As Fig. 5, idiographic flow is:
1. photo 501 is read in;
2. gray-scale map 502 is converted to;
3. Gauss's denoising 503;
4. binaryzation 504;
5. Extracting contour 505;
6. target disc profile 506 is identified;
7. the least square fitting target disc center of circle and diameter 507;
8. unit picture element actual range 508 is obtained;
9. actual range between the target disc center of circle is calculated in left side marking plate and right side marking plate;
10. same monitored area shooting multiple pictures, calculates the mean value of actual range between multiple target disc center of circle, as certain monitoring result once.
Finally, regularly repeatedly to the photo of the monitored area 00 in a certain crack 01, by processing based on image processing techniques, calculating actual range between different times target disc 121 center of circle, realizing the object that wide variety and the propagation law in various crack 01 are monitored.
Claims (4)
1. a fracture width change monitoring device, is characterized in that:
Comprise monitored area (00), left side marking plate (10), right side marking plate (20), mobile phone (30), transmission line (40) and computer (50);
In monitored area (00), left side marking plate (10) and right side marking plate (20) is respectively arranged with in the left and right sides of crack (11), mobile phone (30) is taken pictures to monitored area (00), and mobile phone (30), transmission line (40) are connected successively with computer (50).
2., by a kind of fracture width change monitoring device according to claim 1, it is characterized in that:
Described left side marking plate (10) comprises the diaphragm (11), pattern plate (12) and the adhesive sticker (13) three layers that connect successively from outside to inside;
Diaphragm (11) is general transparent membrane;
Pattern plate (12) comprises target disc (121), Quick Response Code (122), numbering (123) and background (124);
Adhesive sticker (13) is made up of surfacing (131), bonding agent (132) and base stock (133) three layers;
Described right side marking plate (20) is identical with left side marking plate (10) structure, rotational symmetry each other;
Described mobile phone (30) is a kind of mobile phone with camera function, and pixel is greater than 1,000 ten thousand;
Described transmission line (40) is general-purpose data line;
Described computer (50) its hardware configuration is ordinary PC.
3., by the fracture width variation monitoring method of monitoring device described in claim 1,2, it is characterized in that:
Crack (01) scale of 1. monitoring as required and the monitoring accuracy of requirement, set the pattern (12) of suitable size, especially specifies suitable target disc (121) diameter, and notice that white is target, and black is background (124);
2. the pattern (12) arranged is printed on adhesive sticker (13), and coldly mounts layer protecting film (11) pattern (12) is upper, strengthen marking plate permanance;
3. find out a pair marking plate that numbering (123) is identical at the scene, tear base stock (133) and left side marking plate (10) and right side marking plate (20) are pasted onto the both sides of monitoring crack (01) respectively;
4. mobile phone (30) is utilized to take pictures to monitored area (00), scan Quick Response Code (122) simultaneously, guarantee scope of taking pictures only comprises both sides marking plate as far as possible, for improving the stability of monitoring result and reduction error, same Crack Monitoring region can be clapped several times more, filename saves as Quick Response Code (122) surface sweeping result, and scanning result is consistent with numbering (123);
5. storage picture in mobile phone (30) is reached computer (50) by transmission line line (40), processed by image processing method.
4., by fracture width variation monitoring method according to claim 3, it is characterized in that described image processing method comprises following workflow:
1. photo (501) is read in;
2. gray-scale map (502) is converted to;
3. Gauss's denoising (503);
4. binaryzation (504);
5. Extracting contour (505);
6. target disc profile (506) is identified;
7. the least square fitting target disc center of circle and diameter (507);
8. unit picture element actual range (508) is obtained;
9. actual range (509) between the target disc center of circle is calculated in left side marking plate and right side marking plate;
10. same monitored area shooting multiple pictures, calculates the mean value of actual range between multiple target disc center of circle, as certain monitoring result (510) once;
Finally, regularly repeatedly to the photo of the monitored area (00) of a certain crack (01), by processing based on image processing techniques, calculating actual range between different times target disc (121) center of circle, realizing the object that wide variety and the propagation law of various crack (01) are monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410795319.8A CN104463888A (en) | 2014-12-19 | 2014-12-19 | Crack width change monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410795319.8A CN104463888A (en) | 2014-12-19 | 2014-12-19 | Crack width change monitoring device and method |
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| CN104463888A true CN104463888A (en) | 2015-03-25 |
Family
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Family Applications (1)
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| CN201410795319.8A Pending CN104463888A (en) | 2014-12-19 | 2014-12-19 | Crack width change monitoring device and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547160A (en) * | 2016-01-08 | 2016-05-04 | 中铁第四勘察设计院集团有限公司 | Railway member displacement monitoring system and method |
| CN105675851A (en) * | 2016-01-29 | 2016-06-15 | 钦州学院 | Paper pasting method for identifying whether cracks of reinforced concrete structure expand continuously |
| CN106595497A (en) * | 2017-01-23 | 2017-04-26 | 中车建设工程有限公司 | Building surface crack real-time monitoring and early warning system and early warning method thereof |
| CN107845326A (en) * | 2017-12-19 | 2018-03-27 | 中铁第四勘察设计院集团有限公司 | Rail in high speed railway expansion and cotraction regulator displacement identification Sign Board and measuring method |
| CN108303028A (en) * | 2018-05-02 | 2018-07-20 | 昆山市建设工程质量检测中心 | A kind of construction project crack detecting device and method |
| CN108398368A (en) * | 2018-02-23 | 2018-08-14 | 长江水利委员会长江科学院 | A kind of device and method of extraction soil surface crack hole |
| CN109932209A (en) * | 2019-03-29 | 2019-06-25 | 陈旭扬 | A kind of prevention of geological disaster crack sampler and its application method |
| CN110514113A (en) * | 2019-06-13 | 2019-11-29 | 杭州电子科技大学 | A kind of monitoring land slide slit method based on monocular vision camera |
| CN110660056A (en) * | 2019-10-10 | 2020-01-07 | 昆山市建设工程质量检测中心 | Building crack width measurement algorithm and method based on image processing |
| CN112288692A (en) * | 2020-10-16 | 2021-01-29 | 上海同禾工程科技股份有限公司 | Crack monitoring and management system and monitoring and management method |
| CN112284260A (en) * | 2020-09-30 | 2021-01-29 | 深圳市北斗云信息技术有限公司 | Visual displacement monitoring method, equipment and system |
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| CN105547160A (en) * | 2016-01-08 | 2016-05-04 | 中铁第四勘察设计院集团有限公司 | Railway member displacement monitoring system and method |
| CN105547160B (en) * | 2016-01-08 | 2018-11-30 | 中铁第四勘察设计院集团有限公司 | Railway component system for monitoring displacement and method |
| CN105675851A (en) * | 2016-01-29 | 2016-06-15 | 钦州学院 | Paper pasting method for identifying whether cracks of reinforced concrete structure expand continuously |
| CN105675851B (en) * | 2016-01-29 | 2018-03-30 | 钦州学院 | A kind of sticker method for identifying concrete structure crack and whether persistently extending |
| CN106595497A (en) * | 2017-01-23 | 2017-04-26 | 中车建设工程有限公司 | Building surface crack real-time monitoring and early warning system and early warning method thereof |
| CN107845326A (en) * | 2017-12-19 | 2018-03-27 | 中铁第四勘察设计院集团有限公司 | Rail in high speed railway expansion and cotraction regulator displacement identification Sign Board and measuring method |
| CN108398368A (en) * | 2018-02-23 | 2018-08-14 | 长江水利委员会长江科学院 | A kind of device and method of extraction soil surface crack hole |
| CN108303028A (en) * | 2018-05-02 | 2018-07-20 | 昆山市建设工程质量检测中心 | A kind of construction project crack detecting device and method |
| CN109932209A (en) * | 2019-03-29 | 2019-06-25 | 陈旭扬 | A kind of prevention of geological disaster crack sampler and its application method |
| CN109932209B (en) * | 2019-03-29 | 2021-04-27 | 陈旭扬 | Crack sampler for geological disaster prevention and using method thereof |
| CN110514113A (en) * | 2019-06-13 | 2019-11-29 | 杭州电子科技大学 | A kind of monitoring land slide slit method based on monocular vision camera |
| CN110660056A (en) * | 2019-10-10 | 2020-01-07 | 昆山市建设工程质量检测中心 | Building crack width measurement algorithm and method based on image processing |
| CN110660056B (en) * | 2019-10-10 | 2020-08-18 | 昆山市建设工程质量检测中心 | Building crack width measuring method based on image processing |
| CN112284260A (en) * | 2020-09-30 | 2021-01-29 | 深圳市北斗云信息技术有限公司 | Visual displacement monitoring method, equipment and system |
| CN112288692A (en) * | 2020-10-16 | 2021-01-29 | 上海同禾工程科技股份有限公司 | Crack monitoring and management system and monitoring and management method |
| CN112288692B (en) * | 2020-10-16 | 2023-04-07 | 上海同禾工程科技股份有限公司 | Crack monitoring and management system and monitoring and management method |
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