CN109374644A - Tunnel-liner defect intelligent measurement imitative experimental appliance based on image recognition - Google Patents

Tunnel-liner defect intelligent measurement imitative experimental appliance based on image recognition Download PDF

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Publication number
CN109374644A
CN109374644A CN201811330372.5A CN201811330372A CN109374644A CN 109374644 A CN109374644 A CN 109374644A CN 201811330372 A CN201811330372 A CN 201811330372A CN 109374644 A CN109374644 A CN 109374644A
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China
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pallet
tunnel
camera
circulating
cyclical information
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CN201811330372.5A
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CN109374644B (en
Inventor
李元海
刘金杉
唐晓杰
杨硕
陈佳玮
梁誉潇
丁言峰
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined

Abstract

The invention discloses the tunnel-liner defect intelligent measurement imitative experimental appliances based on image recognition.Each pallet of the circulating pallet is placed in the sliding slot of circulating pallet sliding rail.The cyclical information wall is sequentially fixed on the inner annular edge of each pallet.Driver plate is driven by motor, and each pallet that the moving tooth of driver plate fluctuates circulating pallet recycles sliding on the chute, while driving cyclical information wall synchronizing moving.Background cloth is supported by background cloth bracket, is suspended on elliptical orbit center vertically, constitutes camera shooting background curtain wall.Picture pick-up device is placed in outside circulating pallet sliding rail, and camera lens height is adapted to cyclical information wall.The present invention utilizes relative motion relation, and camera in Practical Project is needed to obtain picture along tunnel continuous moving, camera is converted into and fixes, and test block or paper tape with disease are persistently moved.Substantially reduce the place space needed to build lasting camera and object being observed relative movement.

Description

Tunnel-liner defect intelligent measurement imitative experimental appliance based on image recognition
Technical field
This patent is related to a kind of tunnel-liner defect information intelligent measurement experimental provision, specifically a kind of to be based on image The tunnel-liner disease intelligent measurement imitative experimental appliance of identification, for opening tunnel-liner disease Machine Vision Inspecting System Hair, improvement and validity check.
Background technique
In recent years, the construction and research of the Tunnel Engineering such as highway in China, railway, urban track traffic have obtained hair at full speed Exhibition, tunnel information, science, the exploitation of convenient and fast preservation & testing system and application are also gradually paid attention in the past for many years.
Common tunnel defect includes the following categories: tunnel leak, lining corrosion, lining cracking, freezing damage in tunnel, portal damage Bad, solid concrete roabed rhegma, the damage of accessory structure object etc..According to numerous tunnel defects, experience have shown that, liner structure is damaged and leaks Water be influence tunnel safety principal element (" Chinese Highway journal " in May, 2015, the 5th phase, volume 28, " Chinese Tunnel Engineering Academic research summary 2015 ").
" deformation measurement " and " feature identification " two major classes can be divided into based on Digital photographic method for measurement.Wherein, Digital photographic " deformation measurement " calculates displacement according to the changes in coordinates of target image measuring point mainly using displacement observation as target, then again into Row strain calculation analyzes the deformation characteristics of target on this basis;" identification of Digital photographic feature " is mainly with separation characteristic object That will study or the interested feature of technical staff is separated from image for target, as circuit board crack image detection, (" the rocks such as the identification of license plate number automatic identification, rock-soil material structure composition and concrete material crack in road traffic system Native warped digital photograph method for measurement and application ", Li Yuanhai writes).
The project of Tunnel testing generally comprises tunnel convergence value, vault sinking value, ground settlement value and other diseases Such as: the detection of Lining Crack and percolating water situation.Wherein deformation detection (convergency value and sedimentation value) and Defect inspection are detections The most important thing, the former belongs to " deformation measurement " scope, and the latter belongs to " feature identification " scope.Number according to the present invention is shone Phase method for measurement is " feature identification ".
Traditional Tunnel Engineering detection means is mainly contact measurement and total station application.It is main to use Convergence gauge carries out convergency value measurement, and carrying out sedimentation value using level, steel ruler etc. must measure, and such means are at low cost, easy to operate, But work difficulty is big, heavy workload and measurement time are long.Technology of the total station application means as comparative maturity, tool Have certain reliability, but equally exist deficiency: measurement accuracy is not so good as traditional measurement means, and the accuracy of data is similarly subjected to There are caused by the other influences of human error and instrument itself error and site environment for the operation influence of operator Error.
The application means based on digital picture measurement technology be rapidly developed in recent years.Such as " highway With automotive " the 3rd phase in 2016 " tunnel defect Fast Detection Technique status and analysis compared with " one text to home and abroad tunnel-liner disease The advantage and disadvantage of development and the application and various technologies of evil informationization intelligent testing technology carried out it is more comprehensive introduce with than Compared with.
Currently, the disease intelligent informationization detection of various tunnel-liners is generally complete by the intelligence system based on image recognition At, comprising: image collecting device, the fixation of image collecting device and mobile device, the grass-hopper of information, backend information are collected Processing system.Such system has had blank scheme to be applied to engineering, and has the scientific research institutions such as numerous colleges and universities, enterprise to such system System is optimized, is improved.If " Hunan University's journal (natural science edition) " the 3rd phase of volume 45 in 2018 is " based on deep learning Shield tunnel liner disease recognition method " it just describes a kind of " Quick-moving type tunnel scanning-detecting system " and can be moved in tunnel The image for moving and obtaining lining cutting surface is transmitted to rear calculation processing.Volume 36 of " Chinese Journal of Rock Mechanics and Engineering " 2017 12 phases " the shield tunnel water leakage defect image recognition based on a deep learning " text proposes a kind of novel based on full convolution net The shield tunnel water leakage defect image recognition algorithm of network." Chinese Journal of Rock Mechanics and Engineering " supplementary issue " tunnel of volume 36 in 2017 The model investigation of lining cutting image definition influence factor " text, describe a kind of carried out in laboratory based on computer Vision realizes the simulated experiment easy device that image obtains to tunnel-liner surface.The device will be printed with the information of characteristic image Paper is attached on bending veneer and is fixed on experiment wall, and the equipment such as camera, light source and industrial computer are placed in one can On mobile trolley, camera and the relative movement for being observed image are built using the movement of trolley.
Nowadays colleges and universities and enterprise the verifying of exploitation and the application of the technology is generally verified by live practical application or The mode of production physical model verifies the validity of the system made.Although both modes are closest to practical application ring Border, but need scientific research personnel that the equipment made all is transported to Tunnel Engineering scene, it spends human and material resources and wastes time, And tunnel site environment is complicated severe, and environmental variance is difficult to control one by one, if experimental result is not up to target, it is difficult to Concrete reason is judged, then it is proposed that research device in a kind of laboratory for tunnel defect image identification system.It is intended to Built in laboratory for researcher with experimental situation similar in field environmental condition, facilitate researcher in laboratory Digital Image measurement system is developed, improved and studied.
Summary of the invention
In view of the above-mentioned problems, present invention aims to overcome that defect of the existing technology, provides a kind of based on image knowledge Other tunnel-liner disease intelligent measurement imitative experimental appliance, facilitates colleges and universities and enterprise in laboratory to " tunnel defect number The equipment that word photograph detection system " carries out project study and Optimal improvements.
To reach this purpose, present invention needs simulate detection system at tunnel scene in laboratory to the full extent Environment when work.
Existing " the tunnel defect intelligent checking system based on image recognition " is generally by image acquisition equipment and other sights It surveys instrument to be placed on truck or other movable carriers, movable carrier is started in tunnel internal along tunnel, and tunnel lining is collected The data informations such as image are built, rear is then sent to by the image information etc. that information transmission device will acquire, it is soft by profession Part carries out the calculating and analysis of information, finally obtains the evaluation of tunnel-liner safe coefficient.Such as a kind of patent of invention " constructing tunnel Information-based dynamic detection system and its detection method " (Authorization Notice No.: 102587986 B of CN), describes a kind of Tunnel testing The implementation method of system.
In order to simulate the effect of the relative movement of camera and tunnel-liner in actual observation in the limited space in laboratory Fruit, the present invention propose photographic means being set as fixed, make containing the special natural pattern for being similar to tunnel-liner defect information Type or the tunnel texture information paper tape (tunnel-liner serial-gram group) of artificial shooting printing are fixed on special device and rotate, generation Tunnel-liner for the actually detected environment in scene is fixed, and photographic means is mobile.
The present invention is based on the tunnel-liner defect intelligent measurement imitative experimental appliance of image recognition, including it is support, circulating Pallet sliding rail, circulating pallet, cyclical information wall, background cloth and picture pick-up device.It is characterized in that:
The circulating pallet sliding rail is elliptical orbit, by the seat supports, is horizontally arranged.Circulating pallet Sliding rail is equipped with sliding slot, and the circulating pallet is by the continuously coupled formation close ring of several pallets, each loading support Pulley is arranged in pan bottom, and each pulley is placed in the sliding slot of circulating pallet sliding rail.The cyclical information wall is successively fixed On the inner annular edge of each pallet, cyclical information wall metope is vertical with pallet disk (to allow low-angle inclined Difference).Support is equipped with driver plate, and driver plate is driven by motor, and the moving tooth of driver plate fluctuates each pallet of circulating pallet Circulation sliding on the chute, while driving cyclical information wall synchronizing moving.Background cloth is supported by background cloth bracket, is suspended on vertically Elliptical orbit center constitutes camera shooting background curtain wall.Picture pick-up device is placed in outside circulating pallet sliding rail, camera lens height with follow Ring information wall adaptation.
Pallet is used to place the material in kind that prefabricated in advance test block or scene obtain.Cyclical information wall is for opening Paste the tunnel wall picture being continuously shot.
Cyclical information wall and each pallet connection type are the articulated manner of belt lock catch, and when experiment, which can pass through, changes circulation Information wall and horizontal direction angle change angle between cyclical information wall and digital camera.
The cyclical information wall is continuously spliced to form by several rectangle wallboards, and each surfaces of wall is equipped with Thin Elastic steel Piece fixes elastic stalloy at the horizontal center line of wallboard, is arranged on the upper water horizontal line upper and lower portion horizontal line of wallboard Several screw holes are equipped with screw rod in each screw hole.By precession screw rod, screw rod can be made the Thin Elastic steel on cyclical information wall surface Piece edge, which is jacked up, builds certain curvature effect to appropriate height, for simulating bent wall tunnel sidewalls or tunnel vault.Rotation Screw rod out can make the flat state of cyclical information wall surface stalloy, for simulating stalk formula tunnel sidewalls.
Background is arranged in whole equipment center, for building the solid background of photo environment, avoids background patterns to camera shooting The interference of data is traditionally arranged to be black or pure white.Background cloth cradle hangs, frame upper have collar tube sub-assembly, so that back Scape cloth can horizontally rotate certain angle, and in suitable position locked and fixed.
The picture pick-up device selects digital camera, configuration data transmission device, and the picture for shooting camera installation passes Computer is transported to, it is mutually compatible with camera, it can be wired for wireless transmission.
Motor selection accurately controls revolving speed, vibrates lesser precision electric motor.
Computer is used to store and handle the picture of camera installation shooting, to obtain the required data in later period.
The present invention compared with prior art and device, has the advantages that
The present invention has filled up optimization, improvement and the effect that the prior art (interior) in laboratory carries out Digital photographic measurement technology The blank of the experimental provision of verifying.It has saved as optimization, improvement and compliance test result and has needed people caused by carrying instrument to scene The consuming of power, material resources, financial resources.
The present invention is opposite relationship using movement, and camera in Practical Project is needed to obtain along tunnel continuous moving and is schemed Piece is converted into camera and fixes, and test block or paper tape (tunnel-liner serial-gram group) with disease are persistently mobile.It substantially reduces The place space needed to build lasting camera and object being observed relative movement.
By the special structure design of cyclical information wall, it can distinguish and complete to bent wall tunnel and stalk formula tunnel Simulation.
Detailed description of the invention
Fig. 1 is apparatus of the present invention three dimensional structure diagram.
Fig. 2 is the circulating pallet of apparatus of the present invention and cyclical information wall stereoscopic schematic diagram.
Fig. 3 is Fig. 2 top view.
Fig. 4 is circulating pallet stereoscopic schematic diagram (display skidding structure).
Fig. 5 is circulating pallet sliding rail stereoscopic schematic diagram.
Fig. 6 is circulating pallet sliding rail section stereoscopic schematic diagram.
Fig. 7 is support stereoscopic schematic diagram.
Fig. 8 is that the single rectangle wallboard of cyclical information wall jacks up elastic stalloy edge under short thread bar precession state Working state schematic representation.
Fig. 9 is that short thread bar is distributed schematic rear view on the single rectangle wallboard of cyclical information wall.
Figure 10 is the single rectangle wallboard of cyclical information wall under short thread bar back-out state, and elastic stalloy is smooth shape The working state schematic representation of state.
Specific embodiment
With reference to the accompanying drawing and specific example, detailed description of the invention is provided, it should be understood that these examples are merely to illustrate It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each The modification of kind equivalent form falls within the application range as defined in the appended claims.
Embodiment: as shown in Figure 1, 2, the tunnel-liner defect intelligent measurement simulation proposed by the present invention based on image recognition Experimental provision, including support 1, circulating pallet sliding rail 2, circulating pallet 3, cyclical information wall 4,5 and of background cloth Picture pick-up device 6.
As shown in Figure 5,6, the circulating pallet sliding rail 2 is elliptical orbit, and by the seat supports, level is put It sets.Circulating pallet sliding rail is equipped with sliding slot, and the circulating pallet is continuously coupled by several pallets 31 Close ring is formed, the pulley of each pallet 31 is placed in the sliding slot 21 of circulating pallet sliding rail.The cyclical information wall 4 It is sequentially fixed on the inner annular edge 32 of each pallet 31, cyclical information wall metope is vertical with pallet disk (can be permitted Perhaps low-angle deviation).Support is equipped with driver plate 7, and driver plate is driven by motor 8, and the moving tooth 9 of driver plate fluctuates circulating pallet Each pallet 31 recycles sliding on the chute, while driving cyclical information wall synchronizing moving.Background cloth 5 is by background cloth bracket 51 supports are suspended on elliptical orbit center vertically, constitute camera shooting background curtain wall.Picture pick-up device 6 is placed in circulating pallet Outside sliding rail 2, camera lens height is adapted to cyclical information wall.
Cyclical information wall 4 and each 31 connection type of pallet are the articulated manner of belt lock catch, and when experiment can pass through change Cyclical information wall and horizontal direction angle change angle between cyclical information wall and digital camera.Cyclical information wall 4 is by several squares Shape wallboard 41 is continuously spliced to form.As shown in Figure 8, Figure 9, each 41 surface of wallboard is equipped with elastic stalloy 42, in wallboard Elastic stalloy is fixed at horizontal center line, several screw holes 43 are set on the upper water horizontal line upper and lower portion horizontal line of wallboard, Screw rod 44 is all provided in each screw hole.By precession screw rod, elastic stalloy edge top of the screw rod by cyclical information wall surface can be made It rises to appropriate height, certain curvature effect is built, for simulating bent wall tunnel sidewalls or tunnel vault.Screw rod is screwed out, It can make the flat state of cyclical information wall surface stalloy, for simulating stalk formula tunnel sidewalls.
According to required tunnel-liner actual curvature situation to be simulated, adjusting screw rod is by the stalloy on cyclical information wall surface It adjusts to required curvature (or formation state) (see Fig. 8,10).
Background is arranged in whole equipment center, for building the solid background of photo environment, avoids background patterns to camera shooting The interference of data.Background cloth cradle hangs, frame upper have collar tube sub-assembly, and background cloth is allowed to horizontally rotate certain angle Degree, and in suitable position locked and fixed.
The picture pick-up device selects digital camera, configuration data transmission device, and the picture for shooting camera installation passes Computer is transported to, it is mutually compatible with camera, it can be wired for wireless transmission.Motor selection accurately controls revolving speed, vibrates smaller Precision electric motor.Computer is used to store and handle the picture of camera installation shooting, to obtain the required data in later period.
Test 1. is using the material object such as concrete test block as the experiment of sample:
The prefabricated of experiment test block is carried out in advance.Such as concrete material, and prefabricated feature disease, such as: crack, percolating water and falling Block etc..
Each test block is sequentially placed on pallet, and fixation.
External digital camera installation has been set up, data line is connected, has debugged computer.
Background cloth angle is adjusted to suitable position, and is locked.The positioning of digital camera exact position is carried out, and test strip shines Whether (video recording) is verified unimpeded from digital camera to computer whole flow process.
Debug motor extremely can working condition, open motor to one compared with low velocity, continue to take pictures (video recording) to carry out movement shape The unimpeded test of total system process under state.
After whole system tests no problem, motor speed is adjusted to appropriate speed, interviews block translational velocity so that being taken It is consistent to start speed in tunnel with the carrier for delivering digital photographing apparatus in Practical Project.
Start to shoot (video recording) in proper moment, obtain image data, and handles and obtain analysis result.
Test experiment of the 2. use information paper tapes (tunnel-liner serial-gram group) as sample:
It is close with " experiment in kind as sample such as concrete test block " step in test 1.
Unlike, pre-production has well the paper tape of feature disease or tunnel-liner serial-gram group is fixed on circulation letter It ceases on wall, adjusts angle lock endless loop information wall, and adjust short thread bar precession depth according to tunnel-liner curvature is modeled Degree, can be tested according to same steps.

Claims (5)

1. a kind of tunnel-liner disease intelligent measurement imitative experimental appliance based on image recognition, including support, circulating loading Pallet sliding rail, circulating pallet, cyclical information wall, background cloth and picture pick-up device;It is characterized in that:
The circulating pallet sliding rail is elliptical orbit, by the seat supports, is horizontally arranged;Circulating pallet Sliding rail is equipped with sliding slot, and the circulating pallet is by the continuously coupled formation close ring of several pallets, each loading support Disk is placed in the sliding slot of circulating pallet sliding rail;The cyclical information wall is sequentially fixed at the inner ring side of each pallet On edge, cyclical information wall metope is vertical with pallet disk;Support is equipped with driver plate, and driver plate is driven by motor, and driver plate is dialled Each pallet that tooth fluctuates circulating pallet recycles sliding on the chute, while driving cyclical information wall is synchronous to move It is dynamic;Background cloth is supported by background cloth bracket, is suspended on elliptical orbit center vertically, constitutes camera shooting background curtain wall;Picture pick-up device It is placed in outside circulating pallet sliding rail, camera lens height is adapted to cyclical information wall.
2. the tunnel-liner disease intelligent measurement imitative experimental appliance according to claim 1 based on image recognition, special Sign is: the cyclical information wall is the articulated manner of belt lock catch with each pallet connection type.
3. the tunnel-liner disease intelligent measurement imitative experimental appliance according to claim 1 based on image recognition, special Sign is: the cyclical information wall is continuously spliced to form by several rectangle wallboards, and each surfaces of wall is equipped with elastic stalloy, Elastic stalloy is fixed at the horizontal center line of wallboard, several spiral shells are set on the upper water horizontal line upper and lower portion horizontal line of wallboard Hole is all provided with screw knob in each screw hole.
4. the tunnel-liner disease intelligent measurement imitative experimental appliance according to claim 1 based on image recognition, special Sign is: the background cloth cradle hangs, frame upper have collar tube sub-assembly, and background cloth is allowed to horizontally rotate certain angle Degree, and in the position locked and fixed of setting.
5. the tunnel-liner disease intelligent measurement imitative experimental appliance according to claim 1 based on image recognition, special Sign is: the picture pick-up device selects digital camera, configuration data transmission device, extremely for the picture transfer that shoots camera installation Computer, it is mutually compatible with camera, using wire transmission or wireless transmission.
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