CN102620660A - Ultra long-range detection method for cracks of buildings and structures - Google Patents
Ultra long-range detection method for cracks of buildings and structures Download PDFInfo
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- CN102620660A CN102620660A CN2012101118919A CN201210111891A CN102620660A CN 102620660 A CN102620660 A CN 102620660A CN 2012101118919 A CN2012101118919 A CN 2012101118919A CN 201210111891 A CN201210111891 A CN 201210111891A CN 102620660 A CN102620660 A CN 102620660A
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Abstract
The invention discloses an ultra long-range detection method for cracks of buildings and structures. The method comprises the following steps of: step 1: selecting a suitable position in front of a detected target crack to stably erect a high-power telescope, and aligning the detected target crack through an eyepiece, step 2: taking off the eyepiece, connecting one end of a video capture box at a mounting position of the eyepiece on a lens barrel, and connecting the other end of the video capture box on a universal serial bus (USB) interface of a computer; step 3: acquiring an image of the detected target crack in real time through video capture software; step 4: measuring the distance from the lens barrel to the detected target crack by a distance meter; step 5: obtaining pixel quantity of the crack in an image document by Photoshop software; and step 6: calculating the length and width of the detected target crack according to the calculation formula that actual size is equal to the product of pixel quantity, distance and 0.0154. The detection method provided by the invention can be used for accurately, high efficiently and conveniently detecting length and width of cracks on high-rise buildings and structures.
Description
Technical field
The present invention relates to buildings and structures quality determining method, be specifically related to a kind of buildings and structures crack very-long-range detection method.
Background technology
Along with buildings and structures are built the age for a long time, outside surface ubiquity concrete and cracking of building body phenomenon, in the safety of structure detection of buildings and structures was identified, the crack was important evaluation controlling index.The method for measurement in the crack of present buildings and structures; For adopting width gage device or reading microscope closely to measure the crack, but for the crack of high-rise structures and structures, for example: high residential building, chimney, silo etc.; The existing crack method that measures need be built full framing scaffold or employing and stretch and fall car in that high-rise structures and structures are other; The not only time of labor and expense, and have to detect and omit point, there is the life potential safety hazard simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of buildings and structures crack very-long-range detection method, this method can be used for existing building and the structure structure security detects evaluation.
The technical scheme that the present invention adopts is: a kind of buildings and structures crack very-long-range detection method may further comprise the steps:
First step selects solution space steadily to set up binoculars in the place ahead in measured target crack, and the lens barrel of binoculars is provided with eyepiece, aims at the measured target crack through eyepiece earlier;
Second step is taken off eyepiece, adopts video acquisition box one end to be connected the installation site of the above eyepiece of lens barrel, and the other end is connected USB interface of computer;
Third step is gathered measured target crack pattern picture in real time through video acquisition software, the image file that not influenced by atmospheric agitation after the record stack;
The 4th step measures the distance from lens barrel to the measured target crack with stadimeter, and record;
The 5th step is obtained the pixel count in crack in the image file with Photoshop software;
The 6th step, according to computing formula: physical size=pixel count * distance * 0.0154, calculate the measured target fracture length and width.
The present invention relates to buildings and structures crack detection method; Overcome the limitation that must closely measure; Adopt binoculars to combine with the CCD video acquisition system; Need not scaffold erecting, the remote capture record does not receive the buildings and the high-quality crack of the structures image file of upper atmosphere effect of jitter, carries out length and the width that image analysis calculation draws buildings and structures crack through computing machine.
Beneficial effect: detection method of the present invention, do not receive the limitation of existing detection method distance, can detect the fracture length and the width of high-rise structures and structures in the very-long-range distance more than 400 meters accurately, efficiently and expediently; Detection method of the present invention, can real time record under the image file in tested crack, the ccd image acquisition software can effectively be avoided the influence of altitude air shake through the method for superimposed image; Detection method of the present invention can not reduce precision because of remote the detection, and through demarcating, its effective accuracy can reach 0.05mm.
Description of drawings
Fig. 1 is a detection method field conduct synoptic diagram of the present invention.
Embodiment
Carry out detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1: a kind of buildings and structures crack very-long-range detection method may further comprise the steps:
First step selects solution space steadily to set up binoculars 1 in the place ahead in measured target crack 6, and the lens barrel 4 of binoculars is provided with eyepiece 2, aims at measured target crack 6 through eyepiece 2 earlier;
Second step is taken off eyepiece 2, adopts video acquisition box 3 one ends to be connected the installation site of lens barrel 4 the above eyepiece 2, and the other end is connected the USB interface of computing machine 5;
Third step is gathered measured target crack pattern picture in real time through video acquisition software, the image file that not influenced by atmospheric agitation after the record stack;
The 4th step, with the distance of stadimeter 7 measurements from lens barrel 4 to measured target crack 6, and record;
The 5th step is obtained the pixel count in crack in the image file with Photoshop software;
The 6th step, according to computing formula: physical size=pixel count * distance * 0.0154, calculate measured target crack 6 length and width.
Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.The all available prior art of each ingredient not clear and definite in the present embodiment realizes.
Claims (1)
1. buildings and structures crack very-long-range detection method is characterized in that: may further comprise the steps:
First step selects solution space steadily to set up binoculars in the place ahead in measured target crack, and the lens barrel of binoculars is provided with eyepiece, aims at the measured target crack through eyepiece earlier;
Second step is taken off eyepiece, adopts video acquisition box one end to be connected the installation site of the above eyepiece of lens barrel, and the other end is connected USB interface of computer;
Third step is gathered measured target crack pattern picture in real time through video acquisition software, the image file that not influenced by atmospheric agitation after the record stack;
The 4th step measures the distance from lens barrel to the measured target crack with stadimeter, and record;
The 5th step is obtained the pixel count in crack in the image file with Photoshop software;
The 6th step, according to computing formula: physical size=pixel count * distance * 0.0154, calculate the measured target fracture length and width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101118919A CN102620660A (en) | 2012-04-17 | 2012-04-17 | Ultra long-range detection method for cracks of buildings and structures |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101118919A CN102620660A (en) | 2012-04-17 | 2012-04-17 | Ultra long-range detection method for cracks of buildings and structures |
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| CN102620660A true CN102620660A (en) | 2012-08-01 |
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| CN2012101118919A Pending CN102620660A (en) | 2012-04-17 | 2012-04-17 | Ultra long-range detection method for cracks of buildings and structures |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608695A (en) * | 2015-12-22 | 2016-05-25 | 北京光电技术研究所 | Detection method and system of building surface defects |
| CN108027948A (en) * | 2015-09-16 | 2018-05-11 | 富士胶片株式会社 | Integrity decision maker, integrity decision method and integrity decision procedure |
| CN113252700A (en) * | 2021-07-01 | 2021-08-13 | 湖南大学 | Structural crack detection method, equipment and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201059960Y (en) * | 2007-04-20 | 2008-05-14 | 北京工业大学 | Concrete crack opening measuring apparatus suitable for remote monitoring |
| WO2008089792A1 (en) * | 2007-01-26 | 2008-07-31 | Trimble Jena Gmbh | Optical instrument and method for obtaining distance and image information |
| CN101652628A (en) * | 2007-01-26 | 2010-02-17 | 特里伯耶拿有限公司 | Optical instrument and method for obtaining distance and image information |
| CN201964875U (en) * | 2011-01-11 | 2011-09-07 | 北京光电技术研究所 | Distant target observing system |
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2012
- 2012-04-17 CN CN2012101118919A patent/CN102620660A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008089792A1 (en) * | 2007-01-26 | 2008-07-31 | Trimble Jena Gmbh | Optical instrument and method for obtaining distance and image information |
| CN101652628A (en) * | 2007-01-26 | 2010-02-17 | 特里伯耶拿有限公司 | Optical instrument and method for obtaining distance and image information |
| CN201059960Y (en) * | 2007-04-20 | 2008-05-14 | 北京工业大学 | Concrete crack opening measuring apparatus suitable for remote monitoring |
| CN201964875U (en) * | 2011-01-11 | 2011-09-07 | 北京光电技术研究所 | Distant target observing system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108027948A (en) * | 2015-09-16 | 2018-05-11 | 富士胶片株式会社 | Integrity decision maker, integrity decision method and integrity decision procedure |
| CN105608695A (en) * | 2015-12-22 | 2016-05-25 | 北京光电技术研究所 | Detection method and system of building surface defects |
| CN113252700A (en) * | 2021-07-01 | 2021-08-13 | 湖南大学 | Structural crack detection method, equipment and system |
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Application publication date: 20120801 |