CN103643621A - Pavement deflection full-field laser detection method and system - Google Patents
Pavement deflection full-field laser detection method and system Download PDFInfo
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- CN103643621A CN103643621A CN201310705624.9A CN201310705624A CN103643621A CN 103643621 A CN103643621 A CN 103643621A CN 201310705624 A CN201310705624 A CN 201310705624A CN 103643621 A CN103643621 A CN 103643621A
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Abstract
The invention provides a pavement deflection full-field laser detection method and system. The method comprises the following steps: emitting a sector laser beam to a pavement to be measured, and forming a laser marking line which passes through a loading point of the pavement to be measured; providing an image acquisition control signal for a charge coupled device (CCD) image acquisition device, and controlling the image acquisition device to acquire a laser marking line image, wherein the operation comprises two-time image acquisition; acquiring two laser marking line images under two conditions that a standard load is loaded on the loading point and the standard load is unloaded from the loading point; transmitting the laser marking line image acquired by the CCD image acquisition device to a computer image information processing system in a wired or wireless mode; and performing image information differential interference processing through the computer image information processing system, thus acquiring image data of a deflection basin. According to the detection system and method provided by the invention, the pavement deflection is detected in a non-contact full-field mode, the distance between a supporting point and a measuring point is large enough, and a measuring basis is reasonably selected.
Description
Technical field
The present invention relates to surperficial micro-distortion and show and accurate fields of measurement, in particular to a kind of pavement deflection whole audience laser detecting method and detection system, be suitable for the whole audience large span non-contact intelligent detection of various highway pavement roadbed deflection values.
Background technology
One, Road Deflection Testing Technology performance requirement
Pavement deflection is the parameter that characterizes road surface supporting capacity, that structure and material by road surface determines, that any road surface (comprises the road surfaces such as speedway, common road, road, the airport (basic parameter that all must measure, it is defined as: under the effect of specified standard load wheel, total vertical deformation value that roadbed or the road surface in wheel gap produces is total flexure (no-load and standard are carried lower modified difference); Or vertically rebound deformation value claims rebound deflection (standard is fully loaded with and unloads rear modified difference completely), take 0.01mm as unit.The pavement deflection value of different structure is distributed in 5-200 scopes: at a high speed, and 5-15; One-level: 20-40; Secondary: 50-80; Three grades: 100; Municipal administration can reach 200, and a large amount of speedways, in submillimeter scope, therefore proposes very high requirement to detection technique.
Road surface load metamorphism is not only a point but is formed the deflection basin centered by load(ing) point.Pavement deflection measurement is to measure the road surface vertical displacement amount of road surface under required standard load.But the deflection on road surface is generally very little, for silk level micron order even, therefore require measuring technique to have very high sensitivity, and because measuring object is material and baroque true highway pavement environment, require measuring principle method have directly, intuitively and result do not rely on measurement environment and object, to guarantee good stability and certainty, consider that again road surface is a large material plate, it is whole strain, there is larger deformation range, require to measure basic point and must, outside deflection basin, guarantee that measurement result is not subject to the impact of self-deformation.
Two, existing pavement deflection detection system present situation and existing problems
1) backman beam is measured the test method of subgrade and pavement rebound deflection
Backman beam is used for measuring total flexure or rebound deflection, but total curved must mensuration with retreating method, the flexure radius of influence greatly to 3-5 meter to semi-rigid type base, the necessary range determination point of automobile is far, very high to driver's technical requirements, Accurate Measurement is very difficult, therefore extensive use is rebound deflection method.So far still in a large number for final acceptance of construction and the Static Detection of highway, (backman beam transmits the micro-distortion in road surface based on mechanical lever, and the dial gauge that reaches 0.01mm by precision detects metering, and the brachium of lever is than 2.4; 1.2 3.6m beam and 3.6; 1.8 5.4m beam, measures and carries amount and the deformation curve in lower whorl gap at the axle of 100KN.) flexible pavement is as the criterion while spending with surface temperature 20, when other temperature surveys, the road surface that pitch thickness is greater than to 20 centimetres, should carry out temperature correction.) experiment shows that the average total deflection value of flexible pavement is at 0.2---0.5mm, and the flexure radius of influence can reach 3-5 meters, flexure radius is got 1.5---2m.By the galianconism length of backman beam, be 2.4m, getting 2-2.5 meters can meet the demands.The radius of influence improves and strengthens with pavement strength.
Yet backman beam method is still deposited problems: a) measuring basis problem: measuring basis is actually the fulcrum of lever beam, guarantee not to be subject to loading and surface deformation to affect in measuring process, fulcrum must be enough far away apart from measuring point, is greater than the flexure radius that road surface produces.(benkelman beams deflectometer length has two kinds, 3.6m and 5.4m, arm ratio in front and back is designed to 2 to 1), measure and be to the maximum 3.6 meters by basic point decentre, semi-rigid pavement flexure radius is reached more than 4 meters) the survey beam of existing brachium is still unappeasable requirement and has to and measure with series winding relay; B) it is not non-contacting measuring, backman beam is measured pavement deflection and is required gauge head and the necessary close contact of road surfaces to be measured, the correctly distortion on sensing path surface, and actual road surface is complicated, may have foreign matter to affect vertical surface requirement, or flexible thing can affect correct sensing.The measuring point of same position settles different meetings affect measurement result, has a strong impact on measurement reproducibility.C) backman beam method is point measurement rather than whole audience transient measurement.The strict theory of pavement deflection is not the character of road surface point, but the bulk deformation of generation is depressed on 3-dimensional multi-layered road surface at wheel, should express with deflection basin, comprises maximum deflection value, area and form coefficient etc.
2) the micro-flexure measuring method of laser
For solving, the large semi-rigid pavement of deflection basin is existed as the benchmark of fulcrum problem within flexure deformation effect still, rigidity or distortion in winter are still felt to the sensitive deficiency of reading on micron-sized road surface, and laser beam replaces test arm can realize the measurement of abundant long distance, by laser technologies such as laser diffraction principle or high-resolution CCD positioning principles, its certainty of measurement can reach micron dimension, but this method is still the improvement on backman beam basis, lengthened gage beam length, but responsive surface deformation still adopts the Mechanical Contact head sensing pavement displacement the same with backman beam, be still a kind of low speed manual measurement, point-to-point measurement but not the technology of whole audience three-dimensional.
3) autodeflectometer method, along with developing rapidly of speedway, flexure measuring method and the equipment of manual static far can not meet the demands, developed the autodeflectometer that moves backman beam principle based on vehicle-mounted galianconism, with circulation automatic capturing and arrangement backman beam, arrive wheel interstitial site, carry out deflection value measurement, having realized vehicle intelligent measures automatically, but still only 4 kilometers/hour of measuring speeds, measure beam arm long still shorter, generally, in two meters, be distal to expressway flexure radius, obviously can not be as canonical measure.
4) FWD method is the current the widest device, method of using to obtain, based on dropping hammer, road pavement pulse shock loads, with a plurality of velocity sensor beams, paste road surface contact measurement surface deformation speed and time, calculate again flexure curve, obviously also exist to measure basic point indefinite, beam span is less than flexure Radius, and still only 4 kilometers/hour of measuring speeds, shock loading is uncertain, obviously can not measure as standard flexure.
5) high speed flexure measuring system.In order to solve the online detection of speedway, in recent years propose complete the exerting of multiple traffic speed or high speed and take advantage of detection system.They are all based on rate of strain (as danish type) or the displacement (China and American version) of face under roller loads of setting out on a journey of vehicular speeds or distance or road surface elevation sensor measurement wheel trace, particularly started the danish type of product promotion, directly measure be not surface deformation but roller advances middle surface deformation speed, need by the supposition Inversion Calculation relevant with road structure and material etc., very directly not uncertain, and onboard system is all mobile relative datum, and span is difficult to very large, can not, as benchmark, can only measure as statistical appraisal on a large scale.
Summary of the invention
The object of the invention is to provide a kind of pavement deflection whole audience laser detecting method and detection system, adopt the mode of noncontact, the whole audience to carry out the detection of pavement deflection, and fulcrum is enough far away apart from measuring point, and the selection of measuring basis is more reasonable.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows:
A pavement deflection whole audience laser detecting method, comprises the following steps:
To road surface to be measured, launch a covering of the fan laser beam, form by the straight line laser of road surface to be measured load(ing) point;
To a ccd image harvester, provide IMAQ control signal, control it and gather straight line laser image, comprising twice IMAQ: load on described load(ing) point in two kinds of situations of normal loading and unloading proof load, collect two width straight line laser images;
The straight line laser image of described ccd image harvester collection transfers to a computer image information process system by wired or wireless mode; And
Described computer image information process system carries out the processing of image information differential interferometry to described two width straight line laser images, obtains the view data of deflection basin.
Further, in embodiment, in twice image acquisition process, the position of described ccd image harvester remains unchanged.
Further, in embodiment, described covering of the fan laser beam is launched to described road surface to be measured a measuring basis platform beyond being positioned at maximum flexure district by first generating laser.
Further in embodiment, described covering of the fan laser beam is launched to described road surface to be measured a measuring basis platform beyond 5 meters of described load(ing) points of distance by first generating laser.
Further, in embodiment, described the first generating laser is rotatable on described measuring basis platform.
Further in embodiment, described computer image information process system based on pixel in straight line laser image, move and actual flexure between demarcation relation, obtain deflection basin view data.
Further in embodiment, described ccd image harvester is positioned at one and is fixed with on the IMAQ support of second laser, this second laser and the synchronous vertical displacement of ccd image harvester to an optical detector continuous emission excimer laser signal, described optical detector by the laser signal transmission receiving to described computer image information process system, described computer image information process system judges based on former and later two laser signals whether described IMAQ support vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as modifying factor, result to deflection basin view data is revised.
According to improvement of the present invention, another aspect of the present invention also proposes a kind of pavement deflection whole audience laser detection system, comprises one first generating laser, ccd image harvester and computer image information process system, wherein:
Described the first generating laser is positioned at one and is placed on the measuring basis platform on road surface to be measured, described measuring basis platform is positioned at beyond maximum flexure district, this first generating laser is for launching a covering of the fan laser beam to road surface to be measured, to form one by the straight line laser of load(ing) point on road surface to be measured, described load(ing) point is positioned at proof load back wheels of vehicle Zhou center;
Described ccd image harvester is positioned on an IMAQ support, the fulcrum of described IMAQ support is positioned at flexure centered by load(ing) point on round week, described ccd image harvester is for controllably gathering two width straight line laser images, wherein: on described load(ing) point, load in two kinds of situations of normal loading and unloading proof load, collect two width straight line laser images;
Described computer image information process system carries out the processing of image information differential interferometry based on described two width straight line laser images, obtains deflection basin view data.
Further in embodiment, described system also comprises that one is installed on the second generating laser on described IMAQ support, this second generating laser and described ccd image harvester synchronous vertical displacement to an optical detector continuous emission excimer laser signal that is arranged at described measuring basis platform, described optical detector receives described laser signal and transmits it to described computer image information process system, described computer image information process system judges based on former and later two laser signals whether described IMAQ support vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as modifying factor, result to deflection basin view data is revised.
Further, in embodiment, the horizontal range between described the first generating laser and described load(ing) point is at least 5 meters.
Further, in embodiment, described IMAQ support is a tripod, and the fulcrum of its three pin lays respectively at flexure centered by load(ing) point on round week.
Therefore, pavement deflection whole audience laser detection system and detection method that the present invention proposes, can overcome the deficiencies such as problem on measuring basis, measuring principle and the flexure inversion method that existing various flexure technology and equipment exists and contact type measurement, point measurement, technical scheme of the present invention has that measuring basis is credible, principle is directly perceived, the direct advantage of method, and large span measurement of full field, there is more satisfactory perfect measurement performance, certainty of measurement is high, can reach micron order, there is good certainty, repeatability and on-the-spot self-calibration.
Accompanying drawing explanation
Fig. 1 is the exemplary flow schematic diagram of an embodiment of the present invention pavement deflection whole audience laser detecting method.
Fig. 2 is the exemplary configurations schematic diagram of an embodiment of the present invention pavement deflection whole audience laser detection system.
Fig. 3 is the position relationship schematic diagram between measuring basis platform and load(ing) point.
Fig. 4 is the theory diagram of realizing of pavement deflection whole audience laser detection system.
The specific embodiment
In order more to understand technology contents of the present invention, especially exemplified by specific embodiment and coordinate appended graphic being described as follows.
Fig. 1 is the exemplary process diagram of an embodiment of the present invention pavement deflection whole audience laser detecting method, and wherein, a kind of pavement deflection whole audience laser detecting method, starts from step S101, after step S104, finishes.
At step S101, to road surface to be measured, launch a covering of the fan laser beam, form by the straight line laser of road surface to be measured load(ing) point.
Described load(ing) point, is positioned at proof load back wheels of vehicle Zhou center, and proof load car refers to the load car that has loaded 10T standard quality.
As preferred embodiment, in order to prevent the variation of measuring basis, affect measurement result, the covering of the fan laser beam in this step is launched to road surface to be measured a measuring basis platform beyond being positioned at maximum flexure district by first generating laser.Like this, the place beyond from maximum flexure district is to road surface transmitting covering of the fan laser beam to be measured, thereby guarantees that measuring basis can not change.
As preferred embodiment, the covering of the fan laser beam in this step is launched to road surface to be measured from the measuring basis platform apart from beyond 5 meters of load(ing) points by first generating laser.
In above-mentioned two embodiment, optional scheme is that the first generating laser is rotatable on measuring basis platform.
After step S101, then enter step S102.
At step S102, to a ccd image harvester, provide IMAQ control signal, control it and gather straight line laser image, comprising twice IMAQ: load on load(ing) point in two kinds of situations of normal loading and unloading proof load, collect two width straight line laser images.
As preferred embodiment, in twice image acquisition process, the position of ccd image harvester remains unchanged, and can guarantee that like this straight line laser image of twice collection, after images match, is overlapping completely without deformed area.
After step S102, enter step S103.
At step S103, the straight line laser image that aforementioned ccd image harvester gathers transfers to a computer image information process system by wired or wireless mode.
As optional embodiment, can transmit by data wire, or transmit by the wireless transmission link based on WIFI.Certainly, in the embodiment of alternative, transmission means is not as restriction.
After step S103, enter step S104.
At step S104, aforementioned computer image information process system carries out the processing of image information differential interferometry to described two width straight line laser images, obtains the view data of deflection basin.
As optional embodiment, computer image information process system can be a computer, its operation has Image Information Processing software, and (these softwares can be normal image process softwares, such as nEO iMAGING, Photoshop etc., certainly and with as limit), and process according to the image information of input.
In the present embodiment, aforementioned computer image information process system based on pixel in straight line laser image, move and actual flexure between demarcation relation, obtain deflection basin view data.The demarcation relation here, can obtain in several ways, for example, can carry out on-the-spot self-calibration by a self-calibration device, and this self-calibration device is by micrometer caliper, and standard deformed plate and fixture form.
In preferred embodiment, aforementioned ccd image harvester is positioned at one and is fixed with on the IMAQ support of second laser, this second laser and the synchronous vertical displacement of ccd image harvester to an optical detector continuous emission excimer laser signal, described optical detector by the laser signal transmission receiving to described computer image information process system, described computer image information process system judges based on former and later two laser signals whether described IMAQ support vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as modifying factor, result to deflection basin view data is revised.
Figure 2 shows that the exemplary configurations schematic diagram of an embodiment of the present invention pavement deflection whole audience laser detection system, wherein, a kind of pavement deflection whole audience laser detection system, comprise the measuring basis platform 1 on the track being placed in after proof load car and be placed in the IMAQ platform support 2 on the flexure circle centered by load(ing) point G, measuring basis platform 1 is positioned at beyond maximum flexure district, and aforementioned load(ing) point G is positioned at proof load back wheels of vehicle Zhou center.
Preferably, shown in figure 3, horizontal range L between sector generating laser 11 and load(ing) point G is at least 5m, can guarantee like this beyond measuring basis platform 1 is positioned at maximum flexure district, and away from the enough place far away of the trailing wheel of load(ing) point G or proof load car, make the unlikely impact of being measured of measurement result.
Shown in figure 1; as an embodiment preferably; measuring basis platform 1 forms a platform container and supports on the ground; wherein be mounted with sector generating laser 11 and facula position probe 12; like this; available platform case plays top shelter and protection to sector generating laser 11 and facula position probe 12, and eliminates to a certain extent external vibration and other interference.It is worth mentioning that, the front end of this platform container leaves opening, to facilitate sector generating laser 11 and facula position probe 12 to transmit and receive signal.
If Fig. 2 is in conjunction with as shown in Fig. 3, Fig. 4, sector generating laser 11 transmitting one fan-shaped laser beams, in the present embodiment, this sector generating laser 11 loads line inclination transmitting one fan-shaped laser beam in wheel gap to be less than the angle of 45 degree to opposite side, form the straight line laser JG along wheel gap line by load(ing) point, this straight line laser JG is produced by fan-shaped laser beam and road surface intersection, and the lateral displacement image of this straight line laser JG has reflected that the elevation on road surface changes.
In the present embodiment, high-resolution CCD camera 21 carries out transfer of data by a data wire and computer image information process system 23, certainly in a further embodiment, transfer of data between this high-resolution CCD camera 21 and computer image information process system 23 can be also that the mode by wireless transmission realizes, the for example transmission of the Wifi based on ieee standard, or Bluetooth transmission, or other wireless transmission methods.
Two graticule images that 23 pairs of high-resolution CCD cameras 21 of computer image information process system collect carry out the processing of image information differential interferometry, obtain whole audience deflection basin image and data.
In a preferred embodiment, computer image information process system 23 comprises a computer, and its operation has Image Information Processing software, according to the image information of input, processes.In certain embodiments, in computer, also operation has IMAQ to control software, for sending IMAQ control signal.
In the present embodiment, as shown in Figure 1, IMAQ platform support 2 is preferably a tripod, and fulcrum B, the E of its three pin, F lay respectively on the circumference centered by load(ing) point, has solved the long vibration problem apart from suspension strut camera.Preferably, fulcrum B, E, the F of described three pin lay respectively at take centered by load(ing) point G, flexure that radius is 1.5m is on round week.
In the present embodiment, the preferred resolution ratio of high-resolution CCD camera 21 is 2048*1392, and high-resolution CCD camera 21 gathers graticule image directly over carrying out facing to straight line laser JG, and graticule image is positioned at the CCD coordinate middle position of high-resolution CCD camera.
As Fig. 2 and in conjunction with as shown in Fig. 4, the laser signal that the laser instrument 22 that facula position probe 12 receives arrangement on IMAQ platform support 2 is launched, and by laser signal transmission to computer image information process system 23, computer image information process system 23 judges based on former and later two laser signals whether IMAQ platform support 2 vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as corrected parameter, the result of whole audience deflection basin image and data is revised.
The schematic diagram of realizing that Figure 4 shows that Fig. 2 embodiment pavement deflection whole audience laser detection system, it comprises following process:
Utilize sector generating laser 11 to opposite side, to load line inclination transmitting one fan-shaped plan laser in wheel gap to be less than the angle of 45 degree, form the straight line laser JG along wheel gap line by load(ing) point;
High-resolution CCD camera 21 gathers graticule images, wherein: at described straight line laser JG, gather during by described load(ing) point G and add the graticule image under normal loading; And after sailing out of flexure district, proof load car gathers the graticule image after unloading;
The graticule image that high-resolution CCD camera 21 gathers transfers to computer image information process system 23 by wired or wireless mode; And
Two graticule images that 23 pairs of described high-resolution CCD cameras of computer image information process system collect carry out the processing of image information differential interferometry, obtain whole audience deflection basin image and data.
As preferred embodiment, computer image information process system 23 based on pixel in graticule image, move and actual flexure between demarcation relation, obtain and obtain whole audience deflection basin image and data.The demarcation relation here, can obtain in several ways, for example, can carry out on-the-spot self-calibration by a self-calibration device, and this self-calibration device is by micrometer caliper, and standard deformed plate and fixture form.
In the present embodiment, because laser instrument 22 is arranged on IMAQ platform support 2, IMAQ platform support 2 is directly placed in take on the circumference that load(ing) point G is the center of circle, displacement falls in its microlitre that vertical direction only occurs, when CCD camera exposes, be the equal of only change object distance and occur the problem that lateral magnification is different, the coordinate that can relatively regard high-resolution CCD camera 21 as is fixed and is only that the object distance of image changes, for keeping the correct proportions of graticule image, can by pixel dimension factor correction, reach double exposure graphical rule easily mates, without loading zone, overlapping completely, without deformed area, overlapping completely.Wherein, aforementioned magnifying power ratio can be tried to achieve by straight line laser length ratio, and this is that those skilled in the art conveniently obtain.
Therefore, the lateral displacement of described fan-shaped plan laser and road surface straight line laser that intersection produces has reflected that road surface elevation changes---be flexure distortion, this sector generating laser 11 is as the sensor of flexure distortion, and basic point, away from load deflection district, is not subject to flexure deformation effect.The high-resolution CCD camera of IMAQ platform is only the digital figure in CCD coordinate in high-resolution CCD camera as the photographic means of pavement strip image by road surface graph transformation, the object distance that is only double exposure figure is different, the X-Y scheme yardstick magnifying power producing is different, by pixel correction, reach coupling completely, without deformed area, overlapping completely.
Although the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on claims person of defining.
Claims (11)
1. a pavement deflection whole audience laser detecting method, is characterized in that, comprises the following steps:
To road surface to be measured, launch a covering of the fan laser beam, form by the straight line laser of road surface to be measured load(ing) point;
To a ccd image harvester, provide IMAQ control signal, control it and gather straight line laser image, comprising twice IMAQ: load on described load(ing) point in two kinds of situations of normal loading and unloading proof load, collect two width straight line laser images;
The straight line laser image of described ccd image harvester collection transfers to a computer image information process system by wired or wireless mode; And
Described computer image information process system carries out the processing of image information differential interferometry to described two width straight line laser images, obtains the view data of deflection basin.
2. pavement deflection whole audience laser detecting method according to claim 1, is characterized in that, in twice image acquisition process, the position of described ccd image harvester remains unchanged.
3. pavement deflection whole audience laser detecting method according to claim 1, is characterized in that, described covering of the fan laser beam is launched to described road surface to be measured a measuring basis platform beyond being positioned at maximum flexure district by first generating laser.
4. pavement deflection whole audience laser detecting method according to claim 1, is characterized in that, described covering of the fan laser beam is launched to described road surface to be measured a measuring basis platform beyond 5 meters of described load(ing) points of distance by first generating laser.
5. according to the pavement deflection whole audience laser detecting method described in claim 3 or 4, it is characterized in that, described the first generating laser is rotatable on described measuring basis platform.
6. pavement deflection whole audience laser detecting method according to claim 1, is characterized in that, described computer image information process system based on pixel in straight line laser image, move and actual flexure between demarcation relation, obtain deflection basin view data.
7. pavement deflection whole audience laser detecting method according to claim 1, it is characterized in that, described ccd image harvester is positioned at one and is fixed with on the IMAQ support of second laser, this second laser and the synchronous vertical displacement of ccd image harvester to an optical detector continuous emission excimer laser signal, described optical detector by the laser signal transmission receiving to described computer image information process system, described computer image information process system judges based on former and later two laser signals whether described IMAQ support vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as modifying factor, result to deflection basin view data is revised.
8. a pavement deflection whole audience laser detection system, is characterized in that, comprises one first generating laser, ccd image harvester and computer image information process system, wherein:
Described the first generating laser is positioned at one and is placed on the measuring basis platform on road surface to be measured, described measuring basis platform is positioned at beyond maximum flexure district, this first generating laser is for launching a covering of the fan laser beam to road surface to be measured, to form one by the straight line laser of load(ing) point on road surface to be measured, described load(ing) point is positioned at proof load back wheels of vehicle Zhou center;
Described ccd image harvester is positioned on an IMAQ support, the fulcrum of described IMAQ support is positioned at flexure centered by load(ing) point on round week, described ccd image harvester is for controllably gathering two width straight line laser images, wherein: on described load(ing) point, load in two kinds of situations of normal loading and unloading proof load, collect two width straight line laser images;
Described computer image information process system carries out the processing of image information differential interferometry based on described two width straight line laser images, obtains deflection basin view data.
9. pavement deflection whole audience laser detection system according to claim 8, it is characterized in that, described system also comprises that one is installed on the second generating laser on described IMAQ support, this second generating laser and described ccd image harvester synchronous vertical displacement to an optical detector continuous emission excimer laser signal that is arranged at described measuring basis platform, described optical detector receives described laser signal and transmits it to described computer image information process system, described computer image information process system judges based on former and later two laser signals whether described IMAQ support vertical displacement occurs or whether vertical displacement surpasses predetermined threshold, and using judged result as modifying factor, result to deflection basin view data is revised.
10. pavement deflection whole audience laser detection system according to claim 8, is characterized in that, the horizontal range between described the first generating laser and described load(ing) point is at least 5 meters.
11. pavement deflection whole audience laser detection systems according to claim 8, is characterized in that, described IMAQ support is a tripod, and the fulcrum of its three pin lays respectively at flexure centered by load(ing) point on round week.
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| CN104048603A (en) * | 2014-06-20 | 2014-09-17 | 南京理工技术转移中心有限公司 | System and method for measuring array laser reticle and area array CCD high-resolution large visual field |
| CN104975556A (en) * | 2015-07-08 | 2015-10-14 | 长安大学 | Bituminous pavement loose recognition and calculation method based on three-dimensional laser technology |
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| CN108072325A (en) * | 2017-12-30 | 2018-05-25 | 浙江维思无线网络技术有限公司 | A kind of object space determines method and device |
| CN108088375A (en) * | 2017-12-30 | 2018-05-29 | 浙江维思无线网络技术有限公司 | A kind of object relative position detection light beam method of reseptance and device |
| CN108633303A (en) * | 2017-01-25 | 2018-10-09 | 松下知识产权经营株式会社 | Rigid measurement device and rigid assay method |
| CN115217018A (en) * | 2022-07-11 | 2022-10-21 | 武汉光谷卓越科技股份有限公司 | Deflection basin detection method and device based on deformation speed under rolling load effect |
| CN115979157A (en) * | 2022-12-31 | 2023-04-18 | 同济大学 | Road surface structure performance evaluation method and system based on remote laser vibration measurement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07128224A (en) * | 1993-10-29 | 1995-05-19 | Isuzu Motors Ltd | Road surface condition detector |
| US5753808A (en) * | 1995-09-11 | 1998-05-19 | Quest Integrated, Inc. | Self-compensating rolling weight deflectometer |
| CN101205700A (en) * | 2006-12-22 | 2008-06-25 | 南京理工大学 | Laser rapid detecting system for pavement deflection |
| CN101831862A (en) * | 2009-03-11 | 2010-09-15 | 南京理工大学 | Laser high-speed detection system for road surface deflection |
| CN102505622A (en) * | 2011-10-10 | 2012-06-20 | 同济大学 | Method for pavement condition nondestructive detection based on FWD |
| CN103074845A (en) * | 2013-01-10 | 2013-05-01 | 长安大学 | Rigid pavement deflection test device and test method thereof |
| CN103334369A (en) * | 2013-06-22 | 2013-10-02 | 太仓博天网络科技有限公司 | Pavement deflection detection system |
-
2013
- 2013-12-19 CN CN201310705624.9A patent/CN103643621B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07128224A (en) * | 1993-10-29 | 1995-05-19 | Isuzu Motors Ltd | Road surface condition detector |
| US5753808A (en) * | 1995-09-11 | 1998-05-19 | Quest Integrated, Inc. | Self-compensating rolling weight deflectometer |
| CN101205700A (en) * | 2006-12-22 | 2008-06-25 | 南京理工大学 | Laser rapid detecting system for pavement deflection |
| CN101831862A (en) * | 2009-03-11 | 2010-09-15 | 南京理工大学 | Laser high-speed detection system for road surface deflection |
| CN102505622A (en) * | 2011-10-10 | 2012-06-20 | 同济大学 | Method for pavement condition nondestructive detection based on FWD |
| CN103074845A (en) * | 2013-01-10 | 2013-05-01 | 长安大学 | Rigid pavement deflection test device and test method thereof |
| CN103334369A (en) * | 2013-06-22 | 2013-10-02 | 太仓博天网络科技有限公司 | Pavement deflection detection system |
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