CN104931021B - Crack multi-parameter observation device based on close-range photogrammetry - Google Patents
Crack multi-parameter observation device based on close-range photogrammetry Download PDFInfo
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- CN104931021B CN104931021B CN201510142878.3A CN201510142878A CN104931021B CN 104931021 B CN104931021 B CN 104931021B CN 201510142878 A CN201510142878 A CN 201510142878A CN 104931021 B CN104931021 B CN 104931021B
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- crack
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Multimedia (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a crack multi-parameter observation device based on close-range photogrammetry, which comprises: the image acquisition module is used for acquiring the state of the crack and generating a crack image; the orientation determining module is used for determining the orientation of the crack, marking the orientation on the crack image and generating a marked image; the image processing module is used for analyzing the crack image, generating crack parameters, marking the crack parameters on the marked image and generating a result image; and the storage module is used for storing the crack image and the result image. Therefore, the data of the observed crack is more accurate, the reliability is high, the operation is simple and convenient, and the crack monitoring efficiency is effectively improved.
Description
Technical field
The present invention relates to gap observation field, and in particular to a kind of crack multi-parameter observation dress based on close-range photogrammetry
Put.
Background technology
Geological disaster professional monitoring includes the contents such as geometric deformation monitoring, influence factor monitoring and ess-strain monitoring,
The wherein development of ground fissure can reflect deformable body macroscopic deformation situation, be the key content of geological disaster geometric deformation monitoring, be
Geological Hazards Monitoring early warning provides important data supporting.
Buildings or structures deformation monitoring is (vertical comprising in-plane displancement monitoring, vertical displacement monitoring, inclination with quality testing
Degree) monitoring, Crack Monitoring, ess-strain monitoring and structural intergrity, material stress detect etc. content.Structural cracks develops feelings
Condition not only reflects structural deformation conditions, while structure stress distribution situation is reflected, therefore Crack Monitoring is structural deformation monitoring
With the important content of quality testing, the control to structure safe condition is significant.
The equipment for being presently used for Crack Monitoring mainly has reading microscope, crack gauge and New Instrument for Crack Width etc., wherein reading
Number microscopic is realized the amplification in crack and is measured using optical microphotograph principle；Crack gauge pre-plugged to works surface or
Inside, it is main to realize that Fracture Deformation situation is observed using type vibration wire sensing principle；New Instrument for Crack Width mainly using infrared scan with
Image-forming principle realizes that fracture width is measured.
The problem that above-mentioned several equipment or observation device are present mainly have it is following some：
1st, monitoring parameter is single, and the observation of fracture width parameter is laid particular emphasis on the current kind equipment more；
2nd, automaticity is low, and industry working time boundary line indoors and out of doors is obvious.Determine due to needing technician
Phase reaches monitoring point and is operated manually, records, and is then observed industry in data and arranges and analyze, and monitoring efficiency is more low
Under；
3rd, equipment pre-plugged or observation monument pre-build that requirement is higher.It is tight to ensure the embedded palpus of accuracy of observation crack gauge
Lattice are installed its requirement and are carried out, and obvious observation monument must be set up during using New Instrument for Crack Width or reading microscope, once observation monument
It is impaired, Monitoring Data sequence interruptions will be caused；
4th, observation data precision of inner coincidence is difficult to ensure that.Because above-mentioned several scopes or observed pattern receive human factor
Influence is larger, so as to cause the poor even more than true strain amount of multiple observations data.
It is therefore proposed that a kind of new gap observation device, will turn into the problem that technical staff needs to consider.
The content of the invention
The technical problem to be solved in the present invention has been to provide a kind of crack multi-parameter observation dress based on close-range photogrammetry
Put so that the data of observation are more accurate, and reliability is high, easy to operate, so as to effectively raise the efficiency of Crack Monitoring.
In order to solve the above-mentioned technical problem, the invention provides a kind of crack multi-parameter observation based on close-range photogrammetry
Device, including：
Image capture module, the situation for obtaining crack generates crack pattern picture；
Orientation determining module, for determining the orientation in the crack, and is marked on the crack pattern picture, generation mark figure
Picture；
Image processing module, for analyzing the crack pattern picture, generates fracture parameters, and the fracture parameters are marked at
On the mark image, result map picture is generated；
Memory module, for storing the crack pattern picture and the result map picture.
Preferably, described image acquisition module includes：Digital camera lens and demarcating module are focused, it is described to focus digital camera lens,
Situation for obtaining the crack；The demarcating module, is made up of, orthogonal two groups of triangle collimation marks for demarcating thing
As yardstick, and to the distortion correction for focusing digital camera lens.
Preferably, the orientation determining module includes：GPS locator and electronic compass and double-shaft tilt angle sensor, institute
GPS locator is stated, the geographical position for obtaining the crack, and the geographical position is labeled on the crack pattern picture,
The geographical position includes longitude and latitude；The electronic compass, for determining what the crack was developed in the geographical position
Horizontal direction, generates azimuth, and the azimuth is labeled on the crack pattern picture；The double-shaft tilt angle sensor, uses
In it is determined that the vertical direction developed in the geographical position of the crack, generates inclination angle, and the inclination angle is labeled in into institute
State on crack pattern picture.
Preferably, obliquity sensor is provided with the electronic compass, it is measured during for being inclined to the electronic compass
The crack compensated in the horizontal direction that the geographical position is developed.
Preferably, the fracture parameters include：Observation time and fracture width and observation error.
Preferably, described device is additionally provided with wireless communication module, for the result map picture to be sent to destination address.
Preferably, the result map picture is sent to destination address and is communicated using GPRS or GSM communication modes.
Preferably, described device is additionally provided with display screen, for showing the crack pattern picture or result map picture or described splitting
The situation of seam.
Preferably, screen protective cover is provided with the display screen, for protecting the display screen.
Preferably, the memory module is the internal memory or SD card for being integrated in described device.
The beneficial effects of the present invention are measurement parameter aspect, the present apparatus realizes multi-parameter observation, with prior art side
The observation for overweighting fracture width parameter is compared, and the parameter that the present apparatus is obtained not only includes fracture width, also includes：Inclination angle, side
The relevant parameters such as parallactic angle, the longitude and latitude of observation place, observation time, make the more specific of the data of observation, comprehensively, can realize
Real data comprehensively are provided in the analysis and research in crack；Automation aspect, the present apparatus realizes the automatic hourly observation of device
The relevant informations such as place, time, inclination angle, azimuth, so it is avoided that artificial manually operated, simultaneously because the present apparatus is number
According to being stored directly in figure phase, avoid the later stage it is artificial to data preparation the step of, so as to effectively raise the effect of measurement
Rate；Flexibility ratio aspect, the present apparatus need not pre-building by pre-plugged or observation monument, can be achieved with accurately counterincision
The observation of seam, this reduces the requirement of fracture observation so that gap observation flexibility ratio is higher；Data accuracy aspect,
The man's activity being subject to when being measured due to the present apparatus is smaller, and the result for allowing for measurement is more objective.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural representation of middle demarcating module of the invention；
Fig. 3 is the schematic diagram in observation process of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Main idea is that, the real time status in crack are gathered by image capture module, so as to generate crack
Image, afterwards, the orientation in actual crack is determined by orientation determining module, is marked on crack pattern picture, meanwhile, image procossing
Module is also analyzed in opposite joint image, generates fracture parameters, and it is labeled that fracture parameters recorded into orientation determining module
On crack pattern picture, result map picture is generated；Finally crack pattern picture and result map picture are unifiedly stored in memory module.Thus make
The data that must be observed are more accurate, and reliability is high, easy to operate, so as to effectively raise the efficiency of Crack Monitoring.
Shown in reference picture 1, the present invention includes：Image capture module 101, orientation determining module 102, image processing module
103, memory module 104, wireless communication module 105 and display screen 106.
Image capture module 101, the situation for obtaining the crack generates crack pattern picture；
Orientation determining module 102, for determining the orientation in the crack, and is marked on the crack pattern picture, generation mark
Note image；
Image processing module 103, for analyzing the crack pattern picture, generates fracture parameters, and by the fracture parameters mark
Note generates result map picture on the mark image；
Memory module 104, for storing the crack pattern picture and the result map picture.
Image capture module 101 includes：Focus digital camera lens 1011 and demarcating module 1012 and LED (light emitting diode)
Lamp 1013；It is described to focus digital camera lens 1011, the situation for obtaining the crack；Preferably, focusing digital camera lens 1011
Pixel value be more than 1,000,000, this ensures that obtaining the definition of image, digital camera lens is excellent using digital camera lens 1011 is focused
Point is that he has large aperture, and the image quality for obtaining image is high.Can be according to camera lens elements of interior orientation (x0y0F) device appearance chi is designed
Very little (including diameter and bus length), it is final to obtain optimal digital image.Shown in reference picture 1 or Fig. 2, the demarcating module
1012, it is made up of orthogonal two groups of triangle collimation marks, for demarcating image yardstick, and the abnormal of digital camera lens is focused to described
Become correction.Size between any two collimation marks of the collimation mark can be accurately obtained, and extract and can resolve by the collimation mark after imaging
Image plane scaling relation and clear and definite observation error；LED 1013, the light for fracture plays supplementary function, so as to carry
The crack image effect that height is obtained.
Orientation determining module 102 includes：Double-shaft tilt angle sensor 1021 and electronic compass 1022 and GPS (global locations
System) locator 1023, the GPS locator 1023, the geographical position for obtaining the crack, and by the geographical position
It is labeled on the seam image, the geographical position includes longitude and latitude；The double-shaft tilt angle sensor 1021, for passing through
Measure the change of static weight acceleration to determine the vertical direction that the crack is developed in the geographical position, generation is inclined
Angle, and the inclination angle is labeled on the crack pattern picture.Double-shaft tilt angle sensor 1021 have significant load capacity and
Extraordinary Impacting endurance, 360 degree of measurements at inclination angle can be realized by the cooperation of twin shaft, while can be filtered using internal
Function, to realize being measured in vibration occasion the target at inclination angle.The electronic compass 1022, for utilizing earth magnetism by electronic technology
Specify magnetic north direction, determine horizontal direction that the crack develop in the geographical position, generate azimuth, and will described in
Azimuth is labeled on the crack pattern picture；Obliquity sensor is provided with electronic compass 1022, electronics sieve is thus overcome
The strict limitation in use of disk 1022 so that the crack measured when inclining of electronic compass 1022 is in the geography
The horizontal direction of position development is compensated, and thus greatly improves the reliability of fracture development azimuthal observation data.
Image processing module 103, for by point, line feature extraction and localization process, solving target fracture width, evaluation
Its accuracy of observation, the crack pattern picture, generation observation time, fracture width, observation error etc. are analyzed by Image Fusion
Fracture parameters, and the fracture parameters are marked on the mark image, generate result map picture.Observation time is crack pattern picture
The time obtained from system during imaging；
Shown in reference picture 1 or Fig. 3, O is the focus for focusing digital camera lens 1011；L is visual field inner left frame mark；R is in the visual field
Right collimation mark；S is crack developed width；D is the left and right collimation mark actual size in the visual field, and s is size on crack pattern；It is left in the d visuals field
Size on right collimation mark figure；Wherein, D can be accurately obtained when demarcating module 1012 sets, and s and d reads and obtains automatically；Cause
This, the actual size computing formula of fracture width is：S=D*s/d；
Gap observation error is calculated by following formula：
Obtain.Wherein, s represents that image space is tested fracture scale, d
Image space collimation mark yardstick is represented, S represents object space fracture scale, D expression thing square frame scales,Error in the imaging of crack is represented,Collimation mark mark centering error is represented,Represent error in collimation mark imaging.
Memory module 104 is pluggable SD (storage card based on semiconductor flash memory technique) cards or is integrated in device
Storage inside, for storing the crack pattern picture and the result map picture.SD card is a kind of depositing based on semiconductor flash memory technique
Card storage, with Large Copacity, high-performance, it is safe the characteristics of.
Wireless communication module 105, for the result map picture to be sent to destination address, result map picture is used when sending
GPRS (packet switching communication technology) or GSM (global system for mobile communications) communication mode are transmitted, so can be effective
Observation information sends to specified address in time when industry is done in guarantee outside, realizes operation indoors, and do industry integration in outdoor
Purpose.
Display screen 106, the situation for showing the crack pattern picture or result map picture or the crack, and described aobvious
Screen protective cover 1061 is set in display screen 106, and screen protective cover 1061 can be effectively protected display screen 106, and then effectively
Reduce the scuffing in outside work to display screen 106.
USB interface, for being read out to the crack pattern picture or result map picture in memory module 104 or writing other data
In memory module 104.Battery is the chargeable high-capacity lithium battery no less than 1 piece, can effectively meet long-term field work
The demand that equipment is powered.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of crack multi-parameter observation device based on close-range photogrammetry, it is characterised in that including：
Image capture module, the situation for obtaining crack generates crack pattern picture；
Orientation determining module, for determining the orientation in the crack, and is marked on the crack pattern picture, generation mark image；
Image processing module, for by point, line feature extraction and localization process, solving target fracture width to evaluate its observation
Precision, the crack pattern picture is analyzed by Image Fusion, generates fracture parameters, and the fracture parameters is marked at described
On mark image, result map picture is generated；
Memory module, for storing the crack pattern picture and the result map picture；
Described image acquisition module includes：Digital camera lens and demarcating module are focused, it is described to focus digital camera lens, it is described for obtaining
The situation in crack；The demarcating module, is made up of orthogonal two groups of triangle collimation marks, for demarcating image yardstick and right
The distortion correction for focusing digital camera lens.
2. device as claimed in claim 1, it is characterised in that the orientation determining module includes：GPS locator and electronic compass
And double-shaft tilt angle sensor, the GPS locator, the geographical position for obtaining the crack, and by the geographical position
It is labeled on the crack pattern picture, the geographical position includes longitude and latitude；
The electronic compass, for determining the horizontal direction that the crack is developed in the geographical position, generates azimuth, and will
The azimuth is labeled on the crack pattern picture；
The double-shaft tilt angle sensor, for determining the vertical direction that the crack is developed in the geographical position, generation is inclined
Angle, and the inclination angle is labeled on the crack pattern picture.
3. device as claimed in claim 2, it is characterised in that obliquity sensor is provided with the electronic compass, for institute
The crack measured when electronic compass is inclined is stated to be compensated in the horizontal direction that the geographical position is developed.
4. device as claimed in claim 1, it is characterised in that the fracture parameters include：Observation time and fracture width and
Observation error.
5. device as claimed in claim 1, it is characterised in that described device is additionally provided with wireless communication module, for will be described
Result map picture is sent to destination address.
6. device as claimed in claim 5, it is characterised in that the result map picture sends to destination address and uses GPRS or GSM
Communication mode is communicated.
7. device as claimed in claim 1, it is characterised in that described device is additionally provided with display screen, for showing the crack
Image or the situation in result map picture or the crack.
8. device as claimed in claim 7, it is characterised in that screen protective cover is provided with the display screen, for protecting
State display screen.
9. device as claimed in claim 1, it is characterised in that the memory module is the internal memory or SD for being integrated in described device
Card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510142878.3A CN104931021B (en) | 2015-03-30 | 2015-03-30 | Crack multi-parameter observation device based on close-range photogrammetry |
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| CN201510142878.3A CN104931021B (en) | 2015-03-30 | 2015-03-30 | Crack multi-parameter observation device based on close-range photogrammetry |
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| CN104931021B true CN104931021B (en) | 2017-06-30 |
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| CN109373980B (en) * | 2018-10-09 | 2020-10-13 | 福建汇川物联网技术科技股份有限公司 | Monitoring method and system based on video monitoring measuring instrument and inclinometry terminal |
| CN109990712B (en) * | 2019-03-28 | 2020-11-03 | 唐山钢铁集团有限责任公司 | Online calibration method for width gauge |
| CN110657747A (en) * | 2019-08-27 | 2020-01-07 | 中国十七冶集团有限公司 | Laser scanning type crack observation instrument and observation method thereof |
| CN110987936A (en) * | 2019-11-20 | 2020-04-10 | 天津大学 | Dam surface crack intelligent identification measuring device towards unmanned aerial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101275841A (en) * | 2007-03-30 | 2008-10-01 | 爱信艾达株式会社 | Feature information collecting apparatus and feature information collecting method |
| CN101788288A (en) * | 2010-02-11 | 2010-07-28 | 长安大学 | Positioning system and positioning method for pavement cracks |
| CN103234525A (en) * | 2013-04-12 | 2013-08-07 | 王德荣 | Geology shooting instrument |
| CN204612702U (en) * | 2015-03-30 | 2015-09-02 | 重庆华地工程勘察设计院 | Crack multi-parameter observation device based on close-range photogrammetry |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242646A (en) * | 2005-03-01 | 2006-09-14 | Chuden Gijutsu Consultant Kk | Earth fall monitoring system and rock mass anomaly measuring method |
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- 2015-03-30 CN CN201510142878.3A patent/CN104931021B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275841A (en) * | 2007-03-30 | 2008-10-01 | 爱信艾达株式会社 | Feature information collecting apparatus and feature information collecting method |
| CN101788288A (en) * | 2010-02-11 | 2010-07-28 | 长安大学 | Positioning system and positioning method for pavement cracks |
| CN103234525A (en) * | 2013-04-12 | 2013-08-07 | 王德荣 | Geology shooting instrument |
| CN204612702U (en) * | 2015-03-30 | 2015-09-02 | 重庆华地工程勘察设计院 | Crack multi-parameter observation device based on close-range photogrammetry |
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