CN205100072U - Road flatness detector based on optical detection technique - Google Patents
Road flatness detector based on optical detection technique Download PDFInfo
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- CN205100072U CN205100072U CN201520730348.6U CN201520730348U CN205100072U CN 205100072 U CN205100072 U CN 205100072U CN 201520730348 U CN201520730348 U CN 201520730348U CN 205100072 U CN205100072 U CN 205100072U
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Abstract
The utility model provides a road flatness detector based on optical detection technique, include: detect car, line source, camera device, control processing unit, a plurality of line source passes through the support mounting and is detecting the rear of a vehicle or locomotive one side to make the sensing of line source parallel with the advancing direction who detects the car, camera device sets up at the opposite side that detects the car rear of a vehicle or locomotive, and it is shot the direction and is detected the angle theta that the road surface keeps a sureness, control processing unit set up inside detecting the car, the line source is the monochromatic point source that exposure areas is linearity or many parallel lines forms, control processing unit can control camera device and shoot the image of line light exposure on the road surface and can handle the image of shooing to report the testing result in good time. The utility model discloses a cost economy that useful technological effect is detecting instrument, small in size, can detect in real time, not influence normal driving, and, still improve detection efficiency and detected the precision.
Description
Technical field
The utility model relates to Detection Technololgy for Road Surface Roughness, is related specifically to a kind of surface evenness detector based on optical detective technology.
Background technology
In recent years, the development of advancing by leaps and bounds along with the highway construction of China Higher level, its maintenance management is day by day important, and surface evenness information is one of key index evaluating pavement quality quality.So-called surface evenness refers to the deviate of road surface along the concavo-convex amount of front line direction.Bad surface evenness not only affects road traffic safety, reduces driving comfort level, increases driving noise pollution, accelerates road structure simultaneously and destroys, affect pavement life, shorten curing period.At present, conventional both at home and abroad detection method of road-surface evenness mainly contains three kinds, i.e. 3m ruler method, continous way smoothness measuring equipment and Bump Integrator.Described 3m ruler method adopts the long ruler of 3m to be placed on road surface, observes the gap between road surface and ruler, judges the planeness on road surface thus.Obviously, 3m ruler method not only working strength is large, and precision is lower.Before and after described continous way smoothness measuring equipment adopts, two groups of axle bases are the road wheel of 3m, and the mensuration wheel having can rise and fall in the middle of frame, before road surface, line direction gathers the unidirectional vertical offset data measuring wheel at certain intervals, calculates the variance of data in 100m.Obviously, continous way smoothness measuring equipment has continued to use the Cleaning Principle of 3m ruler method, and its automaticity is higher, but still there is the problems such as certainty of measurement is lower.Described Bump Integrator adopts testing vehicle to travel on road surface with certain speed, due to the uneven situation on road surface, causes the exciting of automobile, measures the accumulated value of rear axle with monodisplacement between compartment by mechanical pick-up device
vBI, thus, measure the planeness on road surface.Obviously, Bump Integrator adopts indirect determination mode, and its certainty of measurement is lower.In sum, prior art detection method of road-surface evenness also exists the problems such as the comparatively large and certainty of measurement of working strength is lower.
Summary of the invention
For solving the problems such as the working strength of prior art detection method of road-surface evenness existence is comparatively large and certainty of measurement is lower, the utility model proposes a kind of surface evenness detector based on optical detective technology.The utility model, based on the surface evenness detector of optical detective technology, comprising: inspection vehicle, line source, camera head, controlled processing unit; Several line sources in inspection vehicle afterbody or headstock side, and make the sensing of line source parallel with the direct of travel of inspection vehicle by support installing, make line source vertical irradiation on detected road surface; Camera head is arranged on the opposite side of inspection vehicle afterbody or headstock, its shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source; Controlled processing unit is arranged on inspection vehicle inside; Described line source refers to that irradiation area is the monochromatic source of linearity or many straight parallel wire, and its rectilinear direction is the sensing of line source; Described controlled processing unit can control camera head and take each line source and be radiated at image on road surface and can process the image photographed, and obtains each line source and is radiated at the curve on road surface and reports testing result in good time.
Further, described line source is the laser instrument that can produce single bundle or multi beam straight parallel wire monochromatic source, or is the monochromatic source of laser instrument with the single bundle of formation after the baffle plate shading in wire hole or multi beam straight parallel wire that can produce monochromatic area source.
Further, described shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source, comprises and make the shooting sight line of camera head and the directed in orthogonal of line source, and the inclination angle keeping shooting sight line and road level line is θ.
Further, the shooting view angle theta of described camera head is adjustable.
Further, described controlled processing unit can control camera head and take each line source and be radiated at image on road surface, comprise and take each line source according to the time interval of setting and be radiated at image on road surface simultaneously, or each line source is radiated at the image on road surface respectively.
Further, described controlled processing unit can process the image photographed, obtain each line source be radiated at the curve on road surface and report testing result in good time, comprise, the image photographed is processed and obtains each line source and be radiated at curve on road surface, and send warning when the maximum difference of each bar curve and fitting a straight line exceeds setting value; Wherein, described each line source curve be radiated on road surface refers to that each line source is radiated at after on road surface, the curve that each the rugged reflection on road surface or refraction point are formed; The fitting a straight line of described each bar curve refers to according to this curve employing least square fitting straight line closest to this curve out; The difference of described each bar curve and fitting a straight line refers to the difference of corresponding points in point on curve and fitting a straight line.
The utility model is the economical of detecting instrument based on the Advantageous Effects of the surface evenness detector of optical detective technology, compact; Can detect in real time, not affect normal traffic safety; Further, detection efficiency and accuracy of detection is also improved.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model based on the surface evenness detector of optical detective technology;
Accompanying drawing 2 is the utility model principle schematic based on the surface evenness detector of optical detective technology.
Below in conjunction with drawings and the specific embodiments, the surface evenness detector of the utility model based on optical detective technology is further described.
Detailed description of the invention
Accompanying drawing 1 is the structural representation of the utility model based on the surface evenness detector of optical detective technology, accompanying drawing 2 is the utility model principle schematic based on the surface evenness detector of optical detective technology, and in figure, 1 is inspection vehicle, 2 is line source, and 3 is camera head.As seen from the figure, the utility model is based on the surface evenness detector of optical detective technology, and the utility model, based on the surface evenness detector of optical detective technology, comprising: inspection vehicle 1, line source 2, camera head 3, controlled processing unit; Several line sources 2 in inspection vehicle 1 afterbody or headstock side, and make the sensing of line source 2 parallel with the direct of travel of inspection vehicle 1 by support installing, make line source 2 vertical irradiation on detected road surface; Camera head 3 is arranged on the opposite side of inspection vehicle 1 afterbody or headstock, its shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source 2; It is inner that controlled processing unit is arranged on inspection vehicle 1; Described line source 2 refers to that irradiation area is the monochromatic source of linearity or many straight parallel wire, and its rectilinear direction is the sensing of line source; Described controlled processing unit can control camera head and take each line source and be radiated at image on road surface and can process the image photographed, and obtains each line source and is radiated at the curve on road surface and reports testing result in good time.When the utility model utilizes straight rays to be radiated on roughness pavement based on the surface evenness detector of optical detective technology, each the rugged reflection on road surface or refraction point are by formation curve.The utility model surface evenness detector adopts line source to be radiated at road surface, adopt video camera to take each line source and be radiated at image on road surface, by the process to image, the curve that reflection on image on each rugged road surface or refraction point are formed shows especially out, try to achieve each bar curve by calculating, and send warning when the maximum difference of each bar curve and fitting a straight line exceeds setting value.
For ensureing the effect of line source, line source described in the utility model is the laser instrument that can produce single bundle or multi beam straight parallel wire monochromatic source, or is the monochromatic source of laser instrument with the single bundle of formation after the baffle plate shading in wire hole or multi beam straight parallel wire that can produce monochromatic area source.
For ensureing shooting image effect, shooting direction described in the utility model and detected road surface keep an angle θ determined and with the directed in orthogonal of line source, comprise and make the shooting sight line of camera head and the directed in orthogonal of line source, and the inclination angle keeping shooting sight line and road level line is θ.The shooting view angle theta of described camera head is adjustable.From Cleaning Principle, the shooting view angle theta of camera head determines the precision of detection, and visual angle is larger, and precision is lower, but the road surface scope that can detect is larger; Visual angle is less, and precision is higher, but the road surface scope detected is less.For adapting to different detection demands, the shooting view angle theta of described camera head is adjustable.
The utility model is based on the surface evenness detector of optical detective technology, controlled processing unit is adopted to control detector and process data, described controlled processing unit can control camera head and take each line source and be radiated at image on road surface, comprise and take each line source according to the time interval of setting and be radiated at image on road surface simultaneously, or each line source is radiated at the image on road surface respectively.Described controlled processing unit can process the image photographed, obtain each line source be radiated at the curve on road surface and report testing result in good time, comprise, the image photographed is processed and obtains each line source and be radiated at curve on road surface, and send warning when the maximum difference of each bar curve and fitting a straight line exceeds setting value; Wherein, described each line source curve be radiated on road surface refers to that each line source is radiated at after on road surface, the curve that each the rugged reflection on road surface or refraction point are formed; The fitting a straight line of described each bar curve refers to according to this curve employing least square fitting straight line closest to this curve out; The difference of described each bar curve and fitting a straight line refers to the difference of corresponding points in point on curve and fitting a straight line.
When adopting the utility model to detect based on the surface evenness detector road pavement planeness of optical detective technology, comprise the following steps:
S1, adopt the surface evenness detector road pavement planeness based on optical detective technology to detect, the described surface evenness detector based on optical detective technology comprises: inspection vehicle, line source, camera head, controlled processing unit; Several line sources in inspection vehicle afterbody or headstock side, and make the sensing of line source parallel with the direct of travel of inspection vehicle by support installing, make line source vertical irradiation on detected road surface; Camera head is arranged on the opposite side of inspection vehicle afterbody or headstock, its shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source; Controlled processing unit is arranged on inspection vehicle inside; Described line source refers to that irradiation area is the monochromatic source of linearity or many straight parallel wire, and its rectilinear direction is the sensing of line source; Described controlled processing unit can control camera head and take each line source and be radiated at image on road surface and can process the image photographed, and obtains each line source and is radiated at the curve on road surface and reports testing result in good time;
S2, with the runway wheelmark of pavement of road to be detected, namely rut is detected object, and rut centre position of picking up the car is mensuration center;
The interval time of S3, the at the uniform velocity travel speed that inspection vehicle is set according to testing requirement and camera head shooting image, wherein, if need road pavement to carry out continuously detecting, then the interval time of camera head shooting image is identical with image processing time and inspection vehicle at the uniform velocity travels speed is the product that unit time photographic device inside takes the number of times of image and the length of line source; If do not need road pavement to carry out continuously detecting, then the speed at the uniform velocity travelled according to the length and selected inspection vehicle of being interrupted distance arranges the interval time of camera head shooting image;
S4, control inspection vehicle at the uniform velocity travel according to the speed of setting, in the process of moving, ensure that the longitudinal center of line source overlaps as far as possible with mensuration center, camera head to be taken the image that each line source is radiated on road surface according to the time of setting and is processed the image photographed, and obtains each line source and is radiated at the curve on road surface and reports testing result in good time; Comprise, the image photographed is processed and obtains each line source and be radiated at curve on road surface, and send warning when the maximum difference of each bar curve and fitting a straight line exceeds setting value; Wherein, described each line source curve be radiated on road surface refers to that each line source is radiated at after on road surface, the curve that each the rugged reflection on road surface or refraction point are formed; The fitting a straight line of described each bar curve refers to according to this curve employing least square fitting straight line closest to this curve out; The difference of described each bar curve and fitting a straight line refers to the difference of corresponding points in point on curve and fitting a straight line.
The utility model is the economical of detecting instrument based on the Advantageous Effects of the surface evenness detector of optical detective technology, compact; Can detect in real time, not affect normal traffic safety; Further, detection efficiency and accuracy of detection is also improved.
Claims (4)
1. based on a surface evenness detector for optical detective technology, it is characterized in that, this detector comprises: inspection vehicle, line source, camera head, controlled processing unit; Several line sources in inspection vehicle afterbody or headstock side, and make the sensing of line source parallel with the direct of travel of inspection vehicle by support installing, make line source vertical irradiation on detected road surface; Camera head is arranged on the opposite side of inspection vehicle afterbody or headstock, its shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source; Controlled processing unit is arranged on inspection vehicle inside; Described line source refers to that irradiation area is the monochromatic source of linearity or many straight parallel wire, and its rectilinear direction is the sensing of line source.
2. according to claim 1 based on the surface evenness detector of optical detective technology, it is characterized in that, described line source is the laser instrument that can produce single bundle or multi beam straight parallel wire monochromatic source, or is the monochromatic source of laser instrument with the single bundle of formation after the baffle plate shading in wire hole or multi beam straight parallel wire that can produce monochromatic area source.
3. according to claim 1 based on the surface evenness detector of optical detective technology, it is characterized in that, described shooting direction and detected road surface keep an angle θ determined and with the directed in orthogonal of line source, comprise and make the shooting sight line of camera head and the directed in orthogonal of line source, further, the inclination angle keeping shooting sight line and road level line is θ.
4. according to claim 1 or 3 based on the surface evenness detector of optical detective technology, it is characterized in that, the shooting view angle theta of described camera head is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730348.6U CN205100072U (en) | 2015-09-21 | 2015-09-21 | Road flatness detector based on optical detection technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730348.6U CN205100072U (en) | 2015-09-21 | 2015-09-21 | Road flatness detector based on optical detection technique |
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| CN205100072U true CN205100072U (en) | 2016-03-23 |
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| CN201520730348.6U Expired - Fee Related CN205100072U (en) | 2015-09-21 | 2015-09-21 | Road flatness detector based on optical detection technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702051A (en) * | 2016-04-11 | 2016-06-22 | 上海斐讯数据通信技术有限公司 | Vehicle early warning system and method and vehicle containing vehicle early warning system |
| CN116858141A (en) * | 2023-09-02 | 2023-10-10 | 江苏迪牌新材料有限公司 | Flatness detection device for PVC film |
-
2015
- 2015-09-21 CN CN201520730348.6U patent/CN205100072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702051A (en) * | 2016-04-11 | 2016-06-22 | 上海斐讯数据通信技术有限公司 | Vehicle early warning system and method and vehicle containing vehicle early warning system |
| CN116858141A (en) * | 2023-09-02 | 2023-10-10 | 江苏迪牌新材料有限公司 | Flatness detection device for PVC film |
| CN116858141B (en) * | 2023-09-02 | 2023-12-05 | 江苏迪牌新材料有限公司 | Flatness detection device for PVC film |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20160921 |
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| CF01 | Termination of patent right due to non-payment of annual fee |