CN107063095A - A kind of warning system for real time monitoring of existing building building structure fracture width change and recognition methods - Google Patents
A kind of warning system for real time monitoring of existing building building structure fracture width change and recognition methods Download PDFInfo
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- CN107063095A CN107063095A CN201611204791.5A CN201611204791A CN107063095A CN 107063095 A CN107063095 A CN 107063095A CN 201611204791 A CN201611204791 A CN 201611204791A CN 107063095 A CN107063095 A CN 107063095A
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- crack
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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
Abstract
The present invention relates to a kind of warning system for real time monitoring of building structure fracture width change and recognition methods, fixing crack carrying image monitoring instrument (device for being used for monitoring fracture width change in real time), monitors the real-time change width and rate behavior in crack i.e. at building structure crack.The real-time monitoring system of building structure fracture width change includes the functional module such as IMAQ camera and parser, laser illumination, shell and fixed support.Using structural cracks warning system for real time monitoring, the picking rate and frequency of data can be improved long-term effectively, from trend person in charge alarm, it is ensured that house uses safety.The present invention is proposed using the pixel number of crack area is carried out after comparing calculation with image taking area on reference line in intelligent image algorithm identification photo, so that the fracture width change curve drawn.I.e. by being taken pictures repeatedly to a certain fixed position building structural cracks, you can obtain the change curve of the development and change Monitoring Data in crack at this.
Description
Technical field
The present invention relates to a kind of existing building building structure monitoring, alarming technical field, more particularly to a kind of structural cracks is wide
Real-time monitoring alarming and the recognition methods of change are spent, is mainly used in measuring the change width in wall body structure crack.
Background technology
It is well known that existing building house wall structural cracks may result in great house collapse accident, in order to avoid
The generation of accident, should strengthen the management of existing building building safety, ensure the safety of people's life and property.Therefore, must
Wall body structure crack must be carried out regularly observing and monitoring, and in the case of exceeding safe range in crack in time at progress
Reason.In order to judge the development in wall body structure crack exactly, the width that wall body structure crack must be just detected in real time becomes
Change development trend.At present, in the prior art, manually the monitoring and recognition methods of fracture width are more complicated entirely, Er Qiejian
Result is surveyed nor very accurate.With the continuous development of scientific technology, people in the past has gradually been broken away from the monitoring of structural cracks width
In the epoch of work detection, dynamic realtime monitoring crack warning system is progressed into.The real-time monitoring report of structural cracks change width
Alert system is primarily used to the degree of danger in real-time judge house, and the development for dynamically grasping existing building building structure crack becomes
Change situation, back-end data monitoring center is transferred to by technology of Internet of things means by the crack modified-image monitored in real time,
Note abnormalities and alarm, it is ensured that personal security and the use safety in house.
The content of the invention
In order to overcome above mentioned problem, the present invention proposes a kind of real-time prison of existing building building structure fracture width change
Warning system and recognition methods are surveyed, i.e., fixing crack carrying image monitoring instrument (is used for prison in real time at existing building building structure crack
The device of geodesic structure fracture width change), monitor within daily 24 hours the change width and rate behavior in crack.Existing building house
The warning system for real time monitoring of structural cracks change width include data acquisition and transmission, image-recognizing method and parser,
The functional modules such as laser illumination, shell and fixed support.Using the warning system for real time monitoring of structural cracks change width, have
Processing speed and the time of view data are improved to effect, the data that can collect field monitoring are by special line and/or wirelessly
Back-end data Surveillance center and mobile phone alarm are transferred to, the stability that works in harsh environments is effectively guaranteed and can
By property.When house enters the state of emergency using safety, system meeting automatic early-warning simultaneously sends alarm, person in charge to person in charge
Member takes corresponding measure immediately, and urgently evacuating personnel withdraws dilapedated building in an orderly manner, it is ensured that the life security of the people.This hair
Bright propose recognizes that the pixel number of crack black region on reference line in photo enters with image taking area by image algorithm
After row comparing calculation, so that the fracture width change curve drawn.I.e. by a certain fixed position building structural cracks
Take pictures repeatedly, you can obtain the change curve of the development and change Monitoring Data in crack at this.
To achieve these goals, this invention takes following technical scheme：
A kind of data acquisition of warning system for real time monitoring of existing building building structure fracture width change and transmission mould
Block is that transmission is acquired to the signal of each crack sensors using back-end data Surveillance center and is preserved.
Further, in the real-time monitoring process that existing building building structure fracture width changes, when fabric structure splits
When seam is persistently carried out, system can pass through short message or wechat real time propelling movement overload alarm.
Further, used crack sensors are to utilize network communications technology, by data transferring to cloud service
Device, and issue and alarm by mobile terminal.
Further, the data transfer of real-time monitoring system using special line transmission, network transmission and the mode such as can be wirelessly transferred,
Also it can be combined and use different transmission means.
Further, the real-time monitoring system back-end data Surveillance center of existing building building structure fracture width change, adopts
Increase battery is taken, rainy season commercial power interruption is prevented, causes system data not transmit.
Crack carrying image monitoring instrument is arranged in structural to the appearance such as house load-carrying members wall or building enclosure wall, component
The position in crack, wall body slit change width is observed by the crack sensors in the carrying image monitoring instrument of crack.When crack pattern picture prison
When survey instrument is monitored automatically to structural cracks, it is necessary to while gathering having electronic scale and the crack pattern picture of timestamp and crack
Width data.
The warning system for real time monitoring image-recognizing method and parser of existing building building structure fracture width change,
The distance between plane and high definition camera where mainly by measuring crack, and the straight of pixel is calculated according to the distance measured
Footpath scope, the light beam that described pixel is sent by high definition camera laser is formed through planar projective where crack.
Further, by the laser distance measurement function of high definition camera measure between plane where crack and camera away from
From L.
Further, the beam diameter sent according to the laser of the angle of divergence alpha of high definition camera laser, high definition camera
The d and diameter D that pixel is calculated apart from L measured, the diameter D of pixel calculation formula is：D=2tan α L+d.
Shot using plane where high definition camera fracture, to obtain the pixel number and figure of crack black region
Image as shooting area pixel number.Extract the pixel number and figure of crack black region respectively from the image photographed
As shooting the image of area pixel number, and recognize and analyze respectively in the diameter range of pixel number of crack black region
Number of pixels contained by contained number of pixels and image taking area pixel number.
Further, the pixel number of crack black region is extracted from the image photographed, then the pixel of fracture
Number is identified and analyzed, and obtains number of pixels contained in the pixel number diameter range of crack black region；
Further, image taking area pixel number is extracted from the image of shooting, then to image taking area picture
The number of pixels of prime number value is identified and analyzed, and obtains the pixel contained by image taking area pixel number developed width
Number.
Further, carried out in the pixel number of fracture black region and the number of pixels of image taking area pixel number
When identification and analysis, pass through the rapid data field search installed at high definition camera gun and identification software Direct Recognition crack
The pixel number of black region and the number of pixels of image taking area pixel number.
Further, it is proposed that the pixel number and figure of crack black region on reference line in photo are recognized by image algorithm
Carried out as shooting area pixel number after comparing calculation, so that the fracture width change curve drawn.I.e. by a certain fixation
Position building structural cracks is taken pictures repeatedly, you can obtain the change curve of the development and change Monitoring Data in crack at this.Root
According to the threshold values of crack curve situation of change, alert levels are set.
Beneficial effect：The warning system for real time monitoring of existing building building structure fracture width change and recognition methods, behaviour
Work is simple, volume is dexterous, easy for installation, precision is high, small power consumption, and data are intuitively visualized, and can be achieved to architecture structural crack
Efficient identification, finds crack situation of change, alarm signal is sent in time as early as possible, avoids or reduce structure destruction band to greatest extent
The harmfulness come.The crack identification method that the present invention is provided can significantly reduce the loss of image effective information in filtering,
Precision is significantly improved, so as to improve the precision of crack identification.
Brief description of the drawings
Fig. 1 is the warning system for real time monitoring flow chart that existing building building structure fracture width of the present invention changes；
Fig. 2 is the position schematic diagram of crack carrying image monitoring instrument of the present invention；
Fig. 3 is the operation principle schematic diagram of structural cracks carrying image monitoring instrument of the present invention.
Reference：1：Crack carrying image monitoring instrument (includes high definition camera)；2nd, shell；3rd, installation screw；4th, wall knot
Structure crack；5th, wall；6th, laser；7th, the pixel number of crack black region；8th, image taking area pixel number；9th, crack
Sensor.
Embodiment
As Figure 1-3, the warning system for real time monitoring of existing building building structure fracture width change of the invention and
Recognition methods, including crack carrying image monitoring instrument (including high definition camera) 1, shell 2, installation screw 3, wall body slit 4, wall 5,
Laser 6, the pixel number 7 of crack black region, image taking area pixel number 8 and crack sensors 9.Split using structure
The warning system for real time monitoring of change width is stitched, processing speed and the time of view data is effectively improved, can be by scene prison
The data collected are surveyed by special line and/or back-end data Surveillance center and mobile phone alarm is wirelessly transmitted to, are effectively guaranteed
The stability and reliability worked in harsh environments.When house enters the state of emergency using safety, system can be certainly
Dynamic early warning simultaneously sends alarm to person in charge, while person in charge takes corresponding measure, urgently evacuating personnel withdraws danger in an orderly manner
Dangerous house, it is ensured that the life security of the people.
Shown in reference picture 1, a kind of data of the warning system for real time monitoring of existing building building structure fracture width change
Collection and transport module are that transmission is acquired to the signal of each crack sensors 9 using back-end data Surveillance center and is protected
Deposit.In the real-time monitoring process of the change width of existing building house wall structural cracks 4, when building masonry wall structural cracks 4
When persistently carrying out, system can pass through short message or wechat real time propelling movement overload alarm.Used crack sensors 9 are to utilize network
Mechanics of communication, by data transferring to cloud server, and is issued and is alarmed by mobile terminal.The number of real-time monitoring system
It using special line transmission, network transmission and the mode such as can be wirelessly transferred according to transmission, also can be combined and use different transmission means.It is existing to build
The real-time monitoring system back-end data Surveillance center of building structure fracture width change is built, takes increase battery to prevent rainy season city
Electricity is interrupted, and causes system data not transmit.
Shown in reference picture 2, crack carrying image monitoring instrument (including high definition camera) 1 be arranged in house load-carrying members wall or
There is the position in structural crack in building enclosure wall, component etc., first pacify crack carrying image monitoring instrument (including high definition camera) 1
It is fixed in shell 2, then shell 2 is fixed on wall 5 by installation screw 3.(included by crack carrying image monitoring instrument
High definition camera) change width of the observation wall body structure of crack sensors 9 crack 4 in 1, wall body structure crack 4 is carried out automatically
During monitoring, it is necessary to while gathering the crack pattern picture and fracture width data of having electronic scale and timestamp.
Shown in reference picture 3, the warning system for real time monitoring image recognition side of existing building building structure fracture width change
Method and parser, mainly (include high definition to take a picture by measuring the place plane of wall body structure crack 4 and crack carrying image monitoring instrument
Machine) the distance between high definition camera in 1, and the diameter of pixel is calculated according to the distance measured, described pixel is by crack
The light beam that laser 6 in carrying image monitoring instrument (including high definition camera) 1 is sent is formed through planar projective where crack.By splitting
Where the distance measurement function of laser 6 in seam carrying image monitoring instrument (including high definition camera) 1 measures crack between plane and camera
Apart from L.According to the angle of divergence alpha of laser 6, crack carrying image monitoring instrument in crack carrying image monitoring instrument (including high definition camera) 1
Beam diameter d that laser 6 in (including high definition camera) 1 the is sent and diameter D that pixel is calculated apart from L measured, it is described
The diameter D of pixel calculation formula is：D=2tan α L+d.Using in crack carrying image monitoring instrument (including high definition camera) 1
Plane where high definition camera fracture is shot, to obtain the pixel number 7 and image taking area of crack black region
The image of pixel number 8.The numerical value of pixel 7 of crack black region is extracted from the image of shooting, then the pixel of fracture
Number is identified and analyzed, and obtains number of pixels contained in the diameter range of pixel number 7 of crack black region.From shooting
Image in extract image taking area pixel number 8, then the number of pixels of image taking area pixel number 8 is carried out
Identification and analysis, obtain the number of pixels contained by the developed width of image taking area pixel number 8.In fracture black region
When the number of pixels of pixel number 7 and image taking area pixel number 8 is identified and analyzed, pass through crack carrying image monitoring instrument
The search of rapid data field and the identification software Direct Recognition installed at high definition camera gun in (including high definition camera) 1
The pixel number 7 of crack black region and the number of pixels of image taking area pixel number 8.Propose and known by image algorithm
The pixel number 7 of crack black region is carried out after comparing calculation with image taking area pixel number 8 on reference line in other photo,
So as to the fracture width change curve drawn.I.e. by being taken pictures repeatedly to a certain fixed position building structural cracks, you can
Obtain the change curve of the development and change Monitoring Data in crack at this.According to the threshold values of crack curve situation of change, setting alarm
Rank.
Above is the exemplary embodiments of the present invention, implementation not limited to this of the invention.
Claims (10)
1. warning system for real time monitoring and the recognition methods of a kind of existing building building structure fracture width change, including data are adopted
Collection and transmission, image-recognizing method and parser, crack carrying image monitoring instrument (including high definition camera) 1, wall body structure crack
4th, laser 6, the pixel number 7 of crack black region, image taking area pixel number 8 and crack sensors 9.Use structure
The warning system for real time monitoring of fracture width change, is effectively improved processing speed and the time of view data, can be by scene
The data collected are monitored by special line and/or back-end data Surveillance center and mobile phone alarm is wirelessly transmitted to.The present invention is proposed
The pixel number 7 of crack black region and image taking area pixel number on reference line are recognized in photo by image algorithm
After 8 comparing calculations, so that the fracture width change curve drawn.
2. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：Described data acquisition and transport module is to each crack using back-end data Surveillance center
The signal of sensor 9 is acquired transmission and preserved.The data transfer of real-time monitoring system can be using special line transmission, network transmission
With the mode such as be wirelessly transferred, also can be combined and use different transmission means.
3. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：When building masonry wall structural cracks 4 is persistently carried out, system can be real-time by short message or wechat
Push overload alarm.
4. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：Used crack sensors 9 are to utilize network communications technology, by data transferring to cloud
Server is held, and issues and alarms by mobile terminal.
5. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：When being monitored automatically to wall body structure crack 4, it is necessary at the same gather having electronic scale and when
Between the crack pattern picture that stabs and fracture width data.
6. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：(include high definition to shine by measuring the place plane of wall body structure crack 4 and crack carrying image monitoring instrument
Camera) the distance between high definition camera in 1, and the diameter of pixel is calculated according to the distance measured, described pixel is by splitting
The light beam that laser 6 in seam carrying image monitoring instrument (including high definition camera) 1 is sent is formed through planar projective where crack.Pass through
The distance measurement function of laser 6 in crack carrying image monitoring instrument (including high definition camera) 1 measure plane where crack and camera it
Between apart from L.According to the angle of divergence alpha of laser 6, crack image monitoring in crack carrying image monitoring instrument (including high definition camera) 1
The beam diameter d that laser 6 in instrument (including high definition camera) 1 is sent and the diameter D that pixel is calculated apart from L measured, institute
The calculation formula for stating the diameter D of pixel is：D=2tan α L+d.
7. a kind of warning system for real time monitoring of existing building building structure fracture width change according to claim 1 and
Recognition methods, it is characterised in that：Using the high definition camera fracture institute in crack carrying image monitoring instrument (including high definition camera) 1
Shot in plane, to obtain the pixel number 7 of crack black region and the image of image taking area pixel number 8.From
The numerical value of pixel 7 of crack black region is extracted in the image of shooting, then the number of pixels of fracture is identified and analyzed,
Obtain number of pixels contained in the diameter range of pixel number 7 of crack black region.Image is extracted from the image of shooting
Area pixel number 8 is shot, then the number of pixels to image taking area pixel number 8 is identified and analyzed, and obtains figure
Number of pixels as contained by shooting the developed width of area pixel number 8.
8. the pixel number 7 and image taking area pixel number 8 of crack black region according to claim 7, it is special
Levy and be：Be identified in the pixel number 7 of fracture black region and the number of pixels of image taking area pixel number 8 and
During analysis, pass through the rapid data installed at the high definition camera gun in crack carrying image monitoring instrument (including high definition camera) 1
The pixel number 7 and the picture of image taking area pixel number 8 with identification software Direct Recognition crack black region are searched in field
Plain number.
9. the pixel number 7 and image taking area pixel number 8 of crack black region according to claim 7, it is special
Levy and be：The pixel number 7 and image taking area picture of crack black region on reference line in photo are recognized by image algorithm
Prime number value 8 is carried out after comparing calculation, so that the fracture width change curve drawn.I.e. by a certain fixed position building
Structural cracks is taken pictures repeatedly, you can obtain the change curve of the development and change Monitoring Data in crack at this.
10. according to described in claim 1 a kind of existing building building structure fracture width change warning system for real time monitoring and
Recognition methods, it is characterised in that：According to the threshold values of fracture width change curve situation, alert levels are set.
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| CN113048929A (en) * | 2019-12-26 | 2021-06-29 | 云启勘测设计有限公司 | Building structure crack monitoring devices |
| CN111122588A (en) * | 2020-01-20 | 2020-05-08 | 杨洁 | Industrial building frost crack prevention detection method based on smart city |
| CN111122588B (en) * | 2020-01-20 | 2020-10-20 | 海宁溪聚科技发展有限公司 | Industrial building frost crack prevention detection method based on smart city |
| CN111551118A (en) * | 2020-05-08 | 2020-08-18 | 四川先舟建设工程有限公司 | Bridge crack measuring device and method for municipal bridge engineering |
| CN111896549A (en) * | 2020-08-05 | 2020-11-06 | 深圳瑞莱保核能技术发展有限公司 | Building crack monitoring system and method based on machine learning |
| CN112215077A (en) * | 2020-09-14 | 2021-01-12 | 北京中铁建建筑科技有限公司 | Image recognition building structure crack monitoring system and method |
| CN112525160A (en) * | 2020-12-09 | 2021-03-19 | 南京宥安传感科技有限公司 | Crack change monitoring system based on machine vision |
| CN115655122A (en) * | 2022-12-01 | 2023-01-31 | 浙江同禾传感技术有限公司 | Crack image monitoring device |
| CN117557971A (en) * | 2024-01-12 | 2024-02-13 | 湖北神龙工程测试技术有限公司 | Dangerous house monitoring method based on Internet of things |
| CN117557971B (en) * | 2024-01-12 | 2024-03-26 | 湖北神龙工程测试技术有限公司 | Dangerous house monitoring method based on Internet of things |
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Application publication date: 20170818 |