CN101509875A - Vision inspection device for railway bridge surface crack - Google Patents
Vision inspection device for railway bridge surface crack Download PDFInfo
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- CN101509875A CN101509875A CNA2009100797361A CN200910079736A CN101509875A CN 101509875 A CN101509875 A CN 101509875A CN A2009100797361 A CNA2009100797361 A CN A2009100797361A CN 200910079736 A CN200910079736 A CN 200910079736A CN 101509875 A CN101509875 A CN 101509875A
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Abstract
The invention discloses a visual examining device of cracks on railroad bridge surface, which mainly comprises of: an illuminating system which comprises an illuminating light source and a control circuit and used for illuminating on the front side of the bridge surface to be detected, a temperature control system which comprises a shield installed with optical glass, a heater and a fan and used for protecting a camera and a lens to work normally in an wild environment, a positioning system which is arranged on a wheel shaft of a bridge detecting vehicle and used for determining the defect position of the bridge, a data collecting and storing system which is arranged inside a control room of the rail-mounted bridge detecting vehicle, and an imaging system which comprises the camera and the lens and arranged inside the shield. The visual examining device of cracks on the railroad bridge surface runs in fixed working distance, can realize continuous high-speed detection, is applicable to the detection of railroad bridges especially to the detection of the elevated railroad bridges with large span and long distance distributed in the wild, and avoids the defects in the prior art that the artificial observation of the bridge surface to be detected which is carried out by the detecting personnel in the bridge detecting vehicle is easy to be influenced by subjective factors and weather factors, and other ground observation equipments are difficult to be mounted in the wild or under elevated bridges, and the like.
Description
Technical field
The present invention relates to a kind of vision inspection device for railway bridge surface crack, be used for railway bridge surface, the surface crack inspection of the overhead railway bridge of particularly open-air large span, long distance belongs to bridge security monitoring field.
Background technology
It is the concentrated expression that internal injury reaches certain hazard level that the crack appears in railway bridge surface, it is the most tangible signal that structural danger appears in bridge, when the width in crack reaches 0.2mm when above, extraneous steam enters the inner reinforcement corrosion of quickening easily, globality may directly destroy a bridge, load carrying capacity of bridge is greatly reduced, influence the safe operation of railway.Therefore, timely seizure, inspection bridge surface crack are for indicating or in time find the engineering dangerous situation that the serviceable life of the reliable operation of assurance bridge and prolongation bridge is significant.
Detect in the hanging basket that mainly relies on the staff to ride in bridge-checking vehicle near bridge floor manual observation to be detected when front axle beam, the main personal experience's visual detection that relies on, given testing result is subjected to the influence of subjective factor easily and efficient is low, dangerous height, simultaneously, because of hanging basket will be near bridge floor to be detected, when hanging basket ran into bridge pier and refuge platform, bridge-checking vehicle will stop traveling, regained hanging basket, avoid being stretched over the working position again behind bridge pier and the refuge platform, work efficiency is very low; Another mode is to use vision technique to check the bridge surface on ground with remote observation device or other loading device, mostly be that the short highway bridge of distance in the city is detected, usually rely on natural lighting, be subject to the influence of Changes in weather, perhaps lack continuous memory storage; Also have in addition and use the device that vision detection technology is used for the detection of light rail track girder face, but at be the detection system of special girder construction design, because field environment geography, geologic condition complexity, these methods all are not suitable for the detection on the overhead railway bridge surface of open-air a large amount of large span that exists, long distance.
Summary of the invention
The object of the present invention is to provide a kind of vision inspection device for railway bridge surface crack, with can carry out fast railway bridge surface crack, high Precision Detection and can locate defective.
Technical solution of the present invention is: a kind of vision inspection device for railway bridge surface crack, this device adopts vision detection technology, utilize camera to bridge surface imaging to be checked, record, storing image data, then by Flame Image Process and mode identification technology, analyze, extract the FRACTURE CHARACTERISTICS on surface, thereby realize the detection in crack.
A kind of vision inspection device for railway bridge surface crack, it is characterized in that: this device comprises illuminator, imaging system, temperature control system, data acquisition storage system, positioning system, and wherein illuminator, imaging system, temperature control system are installed on the hanging basket of rail mounted bridge-checking vehicle;
Illuminator comprises lighting source and control circuit, to bridge surface frontlighting to be detected; This control circuit is controlled the flicker frequency of lighting source as the interface camera subject signal controlling of light source and camera;
Temperature control system comprise the protective cover protection camera that installs optical glass, well heater and fan additional and camera lens can lowered in field environment under operate as normal;
Imaging system comprises camera and camera lens, is installed in the protective cover, cooperates images acquired with illuminator;
The data acquisition storage system is installed in the pulpit of rail mounted bridge-checking vehicle, and the Imagery Data Recording that imaging system is gathered in real time is on disk;
Positioning system is installed on the bridge-checking vehicle axletree, determines the position of defective on bridge.
Wherein, the lighting source of described illuminator employing is a stroboscopic light source.
Wherein, the layout structure that described illuminator and imaging system adopt is: camera vertically is staggered, and lighting source adopts on one twice or the arrangement on two once, makes bridge area light to be detected according to evenly.
Wherein, the camera that described imaging system adopts is the area array CCD camera of kilomega network interface, and this camera links to each other with the data acquisition storage system by PCI-Express.
Wherein, the camera lens of described imaging system employing is a telephoto lens.
Wherein, described positioning system using photoelectric encoder, this scrambler are imported CCD camera drives camera photographic images every the fixed angle output pulse signal.
Wherein, described data acquisition storage system comprises storage computation machine and disk memory array, and described disk memory array adopts disk memory array card and SAS hard disk to constitute.
Principle of the present invention is: the present invention is installed on the hanging basket of bridge-checking vehicle, utilize vision detection technology, when bridge-checking vehicle on rail during continuous advancing, the positioning system output pulse signal, input CCD camera drives camera continuously shot images, it is that camera replenishes illumination that the while camera alternately glistens successively by control circuit for light source control stroboscopic light source, the view data that obtains enters the storage computation machine through gigabit netting twine real-time Transmission and stores, utilize image processing techniques that the view data of storage is handled, identify the crack, fall defectives such as piece, finally provide the size and location information of the defective that detects.
A kind of vision inspection device for railway bridge surface crack of the present invention, advantage compared with prior art is: (1) is compared with existing artificial bridge detection technique, adopt vision detection technology, be vulnerable to the shortcoming of subjective factors influences such as fatigue, operating experience when having avoided traditional manual detection, reduce labour intensity and operational danger; (2) be that camera replenishes illumination with stroboscopic light source, reduce the influence of natural light; (3) but the present invention's continuous working, bridge-checking vehicle need not be dodged bridge pier and refuge platform, directly passes through, and realizes fast, the high precision continuous detecting; (4) use kilomega network interface surface array CCD camera, directly link to each other with computing machine by PCI-Express, image pick-up card that need not be special-purpose, and the data transmission distance of gigabit netting twine is long, avoid the near defective of other interface camera data transmission range, be beneficial to imaging system and storage control system are separated more remote, therefore, operating personnel can be in the pulpit of bridge-checking vehicle complete operation, improve operating personnel's working environment.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is integral layout figure of the present invention;
Fig. 3 is the layout of stroboscopic light source of the present invention and imaging system;
Fig. 4 is stroboscopic light source control circuit figure of the present invention;
Concrete label is as follows among the figure:
1, pulpit 2, computing machine 3, operating personnel
4, gigabit netting twine 5, refuge platform 6, hanging basket
7, mechanical arm 8, camera frame 9, stroboscopic light source
10, camera 11, protective cover 12, bridge surface
13, photoelectric encoder 14, bridge pier 15, control circuit
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As shown in Figures 1 and 2, a kind of vision inspection device for railway bridge surface crack of the present invention, mainly comprise illuminator, imaging system, temperature control system, data acquisition storage system, positioning system, wherein illuminator, imaging system, temperature control system are installed on the hanging basket of rail mounted bridge-checking vehicle
Illuminator comprises stroboscopic light source 9 and control circuit 15, to bridge surface 12 frontlightings to be detected; This control circuit 15 is controlled the flicker frequency of lighting source as the interface camera subject signal controlling of stroboscopic light source 9 with camera 10;
Temperature control system comprises the protective cover 11 that installs optical glass, well heater and fan additional, protection camera and camera lens can lowered in field environment under operate as normal;
Imaging system comprises camera and camera lens, is installed in the protective cover 11, cooperates images acquired with illuminator;
The data acquisition storage system comprises storage computation machine 2 and disk memory array, is installed in the pulpit 1 of rail mounted bridge-checking vehicle, and the Imagery Data Recording that imaging system is gathered in real time is on disk;
Positioning system using photoelectric encoder 13 is installed on the bridge-checking vehicle axletree, determines the position of defective on bridge.
As shown in Figure 2, storage computation machine 2 is placed in the pulpit 1 of bridge-checking vehicle, by operating personnel's 3 control detection processes.Camera 10 adopts the high accuracy number area array CCD camera that has the kilomega network interface, and camera interface is a C type interface, focuses F type interface camera lens with 200mm and is connected and need installs the camera lens adapter ring additional.Camera and camera lens have protective cover 11 outward, degree of protection is IP66, main body is used aluminium alloy, the place ahead form is selected optical glass for use, be furnished with well heater, fan, sky shade, wiper, have waterproof and dustproof and prevention function too high or too low for temperature, working temperature is-35 ℃～65 ℃, and assurance camera and camera lens can worked under abominable field condition normally.
Camera 10 is by the input of the PCI-Express on the storage computation machine 2 data, need not special-purpose image pick-up card, and this storage computation machine adopts professional industrial base plate, contains the total length CPU card of dual core processor, independent 3U disk array cabinet.The data total amount of the output of three camera p.s.s is about 120MB, data write disk memory array by computer bus, this disk memory array adopts RAID5 (Redundant Array of Independent Disk) mode to constitute by disk array card and 12 SAS hard disks, improve the storage speed of data, the hard disk that writes with not frame losing of view data, can satisfy the data storage capacity of system's work in continuous 12 hours, realize the storage continuously for a long time of great amount of images data.
Be installed in photoelectric encoder 13 the advancing and the rolling of wheel on the bridge-checking vehicle axletree along with bridge-checking vehicle, produce a pulse signal every the fixing anglec of rotation (fixed range that advances corresponding to bridge-checking vehicle), this pulse signal is taken as the trigger pip control camera of camera, make camera every the fixed-distance shooting piece image, avoid clapping because of the speed of a motor vehicle changes the photographic images region overlapping that causes or leaks.Take the filename of number of times with camera as the sequential storage photographic images, after the processing image obtains FRACTURE CHARACTERISTICS, according to the filename and the foregoing fixed range value of record, can obtain crack pattern as position and the relative distance of taking starting point (bridge starting point), realize the location in crack.
Be illustrated in figure 3 as the layout that the present invention is installed in camera 10 and stroboscopic light source 9 on the camera frame, wherein camera vertically is staggered, adopt three cameras simultaneously to bridge to be detected surface 12 continuously shot images during work, because the time shutter of camera is short, must replenish illumination, use the additional illumination of flash of light successively one by one of three stroboscopic light sources of control circuit 15 controls, reduce the quantity of stroboscopic light source on the one hand and save cost, adopt on one on twice or two layout once not influence illumination uniformity on the other hand, make the entire system compact conformation simultaneously, it is little to take up room.
As shown in Figure 4, for stroboscopic light source control circuit of the present invention, as the interface circuit between light source and the camera, stroboscopic light source receives outer triggering signal control flashing rate.Camera take pictures with after light source is received trigger pip to the glittering time of fluorescent tube must be consistent, therefore, the Strobe signal that adopts the output of camera carries out frequency division with the Strobe signal by control circuit as synchronizing signal, and the low frequency signal that comes out with frequency division is as the trigger pip of stroboscopic light source.Control circuit adopts and has several bcd counter 74LS160 chip of presetting of asynchronous removing function and AND composition, realization is carried out three frequency division with one tunnel input TTL signal, obtain three output signals of 120 ° of three phase phasic differences, they trigger three stroboscopic light sources respectively, when making camera exposure, a stroboscopic light source flash of light is always arranged, and two other stroboscopic light source has the time enough charging, for flash of light next time is got ready, like this can be so that camera and stroboscopic light source collaborative work.
The content that is not described in detail in the instructions of the present invention belongs to this area professional and technical personnel's known prior art.
Claims (7)
1, a kind of vision inspection device for railway bridge surface crack, it is characterized in that: this device comprises illuminator, imaging system, temperature control system, data acquisition storage system, positioning system, and wherein illuminator, imaging system, temperature control system are installed on the hanging basket of rail mounted bridge-checking vehicle;
Illuminator comprises lighting source and control circuit, to bridge surface frontlighting to be detected; This control circuit is controlled the flicker frequency of lighting source as the interface camera subject signal controlling of light source and camera;
Temperature control system comprises the protective cover that installs optical glass, well heater and fan additional, protection camera and camera lens can lowered in field environment under operate as normal;
Imaging system comprises camera and camera lens, is installed in the protective cover, cooperates images acquired with illuminator;
The data acquisition storage system is installed in the pulpit of rail mounted bridge-checking vehicle, and the Imagery Data Recording that imaging system is gathered in real time is on disk;
Positioning system is installed on the bridge-checking vehicle axletree, determines the position of defective on bridge.
2, a kind of vision inspection device for railway bridge surface crack according to claim 1 is characterized in that: the lighting source that described illuminator adopts is a stroboscopic light source.
3, according to claim 1 or described a kind of vision inspection device for railway bridge surface crack, it is characterized in that: the layout structure that described illuminator and imaging system adopt is: camera vertically is staggered, lighting source adopts on one twice or the arrangement on two once, makes bridge area light to be detected according to evenly.
4, a kind of vision inspection device for railway bridge surface crack according to claim 1 is characterized in that: the camera that described imaging system adopts is the area array CCD camera of kilomega network interface, and this camera links to each other with the data acquisition storage system by PCI-Express.
5, a kind of vision inspection device for railway bridge surface crack according to claim 1 is characterized in that: the camera lens that described imaging system adopts is a telephoto lens.
6, a kind of vision inspection device for railway bridge surface crack according to claim 1, it is characterized in that: described data acquisition storage system comprises storage computation machine and disk memory array, and described disk memory array adopts disk memory array card and SAS hard disk to constitute.
7, a kind of vision inspection device for railway bridge surface crack according to claim 1 is characterized in that: described positioning system using photoelectric encoder, this scrambler are imported CCD camera drives camera photographic images every the fixed angle output pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100797361A CN101509875A (en) | 2009-03-09 | 2009-03-09 | Vision inspection device for railway bridge surface crack |
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| CNA2009100797361A CN101509875A (en) | 2009-03-09 | 2009-03-09 | Vision inspection device for railway bridge surface crack |
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| CNA2009100797361A Pending CN101509875A (en) | 2009-03-09 | 2009-03-09 | Vision inspection device for railway bridge surface crack |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243063A (en) * | 2011-04-14 | 2011-11-16 | 华中科技大学 | Concrete bridge bottom crack detecting device |
| CN102323389A (en) * | 2011-06-27 | 2012-01-18 | 王卫国 | B-display detection platform of digital rail flaw detector |
| CN102419331A (en) * | 2011-08-15 | 2012-04-18 | 长安大学 | System for carrying out image acquisition and analysis on crack defects of bridge structure |
| CN102706883A (en) * | 2012-05-06 | 2012-10-03 | 山西省交通科学研究院 | System and method for recognizing holes in paved waterproof board of tunnel |
| CN104233965A (en) * | 2014-10-16 | 2014-12-24 | 刘金顶 | Treatment method for crack of steel box beam |
| CN104280402A (en) * | 2014-09-28 | 2015-01-14 | 广东惠利普路桥信息工程有限公司 | Road and bridge quality diagnosing system based on image analysis |
| CN103453892B (en) * | 2013-09-24 | 2015-11-25 | 广东工业大学 | A kind of Bridge Crack Real-Time Monitoring and fast prior-warning device |
| CN105136812A (en) * | 2015-09-21 | 2015-12-09 | 广州市盛通建设工程质量检测有限公司 | High-speed image detection system for underground railways |
| CN105157595A (en) * | 2015-09-25 | 2015-12-16 | 浙江中技建设工程检测有限公司 | Method and device for detecting deformation and defects of existing building |
| CN105548202A (en) * | 2016-01-15 | 2016-05-04 | 常州工学院 | Automatic concrete shrinkage crack monitoring system |
| CN107064169A (en) * | 2017-01-22 | 2017-08-18 | 太原科技大学 | A kind of Bridge Crack detection means and detection method |
| CN107677683A (en) * | 2017-10-26 | 2018-02-09 | 北京华力兴科技发展有限责任公司 | Train under-pan examining device |
| CN108332927A (en) * | 2018-01-10 | 2018-07-27 | 深圳市晟达机械设计有限公司 | A kind of bridge surface crack detection device |
| CN109001225A (en) * | 2018-04-27 | 2018-12-14 | 上海宝钢工业技术服务有限公司 | Crane girder fatigue crack detection device of driving a vehicle and method |
| CN109342447A (en) * | 2018-11-30 | 2019-02-15 | 重庆红岩建设机械制造有限责任公司 | A kind of bridge tower concrete reinforcement rust detection and the intelligent trolley of surface defect scanning |
| CN110926541A (en) * | 2019-12-12 | 2020-03-27 | 同济大学 | Straddle type monorail PC track beam detection device |
| CN111252110A (en) * | 2020-01-17 | 2020-06-09 | 杭州中车车辆有限公司 | Track beam detection system and detection method for straddle type single-track inspection vehicle |
| CN112485262A (en) * | 2020-12-22 | 2021-03-12 | 常州信息职业技术学院 | Method and device for detecting apparent crack width and expansion evolution of concrete |
| CN113358658A (en) * | 2021-04-25 | 2021-09-07 | 上海工程技术大学 | Method for realizing automatic detection of defects of high-speed rail box girder |
| CN113702386A (en) * | 2021-08-02 | 2021-11-26 | 苏州洞悉科技有限公司 | Railway track crack detection system based on gate-controlled CMOS |
| CN114000422A (en) * | 2021-10-19 | 2022-02-01 | 株洲时代新材料科技股份有限公司 | Continuous beam inspection vehicle lifting platform |
| CN116346999A (en) * | 2023-05-23 | 2023-06-27 | 无锡博锐思智能科技有限公司 | Image acquisition system and image acquisition method |
-
2009
- 2009-03-09 CN CNA2009100797361A patent/CN101509875A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243063A (en) * | 2011-04-14 | 2011-11-16 | 华中科技大学 | Concrete bridge bottom crack detecting device |
| CN102323389A (en) * | 2011-06-27 | 2012-01-18 | 王卫国 | B-display detection platform of digital rail flaw detector |
| CN102323389B (en) * | 2011-06-27 | 2014-03-19 | 王卫国 | B-display detection platform of digital rail flaw detector |
| CN102419331A (en) * | 2011-08-15 | 2012-04-18 | 长安大学 | System for carrying out image acquisition and analysis on crack defects of bridge structure |
| CN102706883A (en) * | 2012-05-06 | 2012-10-03 | 山西省交通科学研究院 | System and method for recognizing holes in paved waterproof board of tunnel |
| CN103453892B (en) * | 2013-09-24 | 2015-11-25 | 广东工业大学 | A kind of Bridge Crack Real-Time Monitoring and fast prior-warning device |
| CN104280402A (en) * | 2014-09-28 | 2015-01-14 | 广东惠利普路桥信息工程有限公司 | Road and bridge quality diagnosing system based on image analysis |
| CN104233965A (en) * | 2014-10-16 | 2014-12-24 | 刘金顶 | Treatment method for crack of steel box beam |
| CN105136812A (en) * | 2015-09-21 | 2015-12-09 | 广州市盛通建设工程质量检测有限公司 | High-speed image detection system for underground railways |
| CN105157595A (en) * | 2015-09-25 | 2015-12-16 | 浙江中技建设工程检测有限公司 | Method and device for detecting deformation and defects of existing building |
| CN105548202A (en) * | 2016-01-15 | 2016-05-04 | 常州工学院 | Automatic concrete shrinkage crack monitoring system |
| CN107064169B (en) * | 2017-01-22 | 2021-11-09 | 太原科技大学 | Bridge crack detection device and detection method |
| CN107064169A (en) * | 2017-01-22 | 2017-08-18 | 太原科技大学 | A kind of Bridge Crack detection means and detection method |
| CN107677683A (en) * | 2017-10-26 | 2018-02-09 | 北京华力兴科技发展有限责任公司 | Train under-pan examining device |
| CN108332927A (en) * | 2018-01-10 | 2018-07-27 | 深圳市晟达机械设计有限公司 | A kind of bridge surface crack detection device |
| CN109001225B (en) * | 2018-04-27 | 2023-07-11 | 上海宝钢工业技术服务有限公司 | Device and method for detecting fatigue crack of crane beam of crane |
| CN109001225A (en) * | 2018-04-27 | 2018-12-14 | 上海宝钢工业技术服务有限公司 | Crane girder fatigue crack detection device of driving a vehicle and method |
| CN109342447A (en) * | 2018-11-30 | 2019-02-15 | 重庆红岩建设机械制造有限责任公司 | A kind of bridge tower concrete reinforcement rust detection and the intelligent trolley of surface defect scanning |
| CN110926541A (en) * | 2019-12-12 | 2020-03-27 | 同济大学 | Straddle type monorail PC track beam detection device |
| CN111252110A (en) * | 2020-01-17 | 2020-06-09 | 杭州中车车辆有限公司 | Track beam detection system and detection method for straddle type single-track inspection vehicle |
| CN111252110B (en) * | 2020-01-17 | 2021-01-26 | 杭州中车车辆有限公司 | Track beam detection system and detection method for straddle type single-track inspection vehicle |
| CN112485262A (en) * | 2020-12-22 | 2021-03-12 | 常州信息职业技术学院 | Method and device for detecting apparent crack width and expansion evolution of concrete |
| CN112485262B (en) * | 2020-12-22 | 2023-08-11 | 常州信息职业技术学院 | Method and device for detecting apparent crack width and expansion evolution of concrete |
| CN113358658A (en) * | 2021-04-25 | 2021-09-07 | 上海工程技术大学 | Method for realizing automatic detection of defects of high-speed rail box girder |
| CN113358658B (en) * | 2021-04-25 | 2022-08-30 | 上海工程技术大学 | Method for realizing automatic detection of defects of high-speed rail box girder |
| CN113702386A (en) * | 2021-08-02 | 2021-11-26 | 苏州洞悉科技有限公司 | Railway track crack detection system based on gate-controlled CMOS |
| CN114000422A (en) * | 2021-10-19 | 2022-02-01 | 株洲时代新材料科技股份有限公司 | Continuous beam inspection vehicle lifting platform |
| CN116346999A (en) * | 2023-05-23 | 2023-06-27 | 无锡博锐思智能科技有限公司 | Image acquisition system and image acquisition method |
| CN116346999B (en) * | 2023-05-23 | 2023-09-22 | 无锡博锐思智能科技有限公司 | Image acquisition system and image acquisition method |
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Application publication date: 20090819 |