CN103366580A - Non-contact type road condition detection system - Google Patents
Non-contact type road condition detection system Download PDFInfo
- Publication number
- CN103366580A CN103366580A CN2013102651873A CN201310265187A CN103366580A CN 103366580 A CN103366580 A CN 103366580A CN 2013102651873 A CN2013102651873 A CN 2013102651873A CN 201310265187 A CN201310265187 A CN 201310265187A CN 103366580 A CN103366580 A CN 103366580A
- Authority
- CN
- China
- Prior art keywords
- detector
- detection system
- taper
- road conditions
- collective optics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a non-contact type road condition detection system. The non-contact type road condition detection system comprises an emitter, a detector and a control circuit board, wherein the emitter is used for emitting two bundles of parallel infrared lights; the detector is used for receiving a reflection light after being subjected to diffuse reflection of the ground, the front end of the detector is provided with a conical light gathering element, the reflection light can be gathered to a smaller end of the conical light gathering element through a larger end of the conical light gathering element, and the smaller end of the conical light gathering element faces the detector; and the control circuit board is used for controlling the emitter to emit lights and processing a signal received by the detector. The non-contact type road condition detection system disclosed by the invention can be arranged on a roadside electric pole and is used for detecting situations of ice, snow, rainwater and the like on the highway pavement; and a unique structure that a lens is combined with the conical light gathering element is brought in, an imaging point can be automatically regulated, the light intensity received by the detector can be increased, a light signal which is received cannot be affected by the positions of light spots, and a detection result is more accurate.
Description
Technical field
The invention belongs to pavement behavior checkout equipment technical field, relate to the automatic detection device of the situations such as non-contact road surface rain on a kind of electric pole that can be installed in the road both sides, snow, ice.
Background technology
The adverse weathers such as rain, snow, mist descend, can occur such as abominable road conditions such as low visibility, (ponding) icy on road skid, containing hidden peril of accident, and usually cause serious accident, be necessary to adopt intelligent transport technology and means to carry out the early warning of adverse weather road conditions and control, to ensure express way driving safety under the adverse weather.
The adverse weather road conditions information gathering is the basis of early warning and control, and road traffic road conditions detection method commonly used generally is artificial or uses the sensor apparatus equipment Inspection.The manual detection error is large, and easily undetected; The road surface sensor O﹠M is not convenient and on the high side.Domestic highway ubiquity road condition monitoring facility along the line is incomplete, and monitored density and key element do not reach the problems such as requirement.Although many crossings and black spot have been installed video shooting device gradually, also substantially rely on man-machine interaction; Under the hazardous weather condition, adopt traditional personal monitoring more than in the current management of highway.Owing to can not in time grasp weather conditions information on the highway, providing real-time weather and traffic information to the driver, often be before administrative authority takes measures, just to have had major accident to occur.Most of meteorological checkout equipment is expensive, and technical merit is higher, but because of the management improper use, lacks necessary maintenance and metering, causes a considerable amount of equipment to be in for a long time idle state.
Lacking again convenient feasible real-time pavement detection system of efficiently and accurately, is the significant problem that China faces now.
Summary of the invention
The object of the invention is to the problem that prior art exists is solved, a kind of novel structure is provided, multiple functional, easy to operate, context of detection is complete, precision is high, with the detecting instrument of the pavement behaviors such as contactless real-time detection road surface rain, snow, ice.
For achieving the above object, the present invention is based on light and incide the principle that the different material surface will produce same-action not and then obtain the scattered light of varying strength, the technical scheme principle that adopts is: use the LED infrared light supply, launch earthward parallel infrared beam by the control of the circuit in the casing, the voltage signal of the scattered light intensity that receives by comparator probe, judge pavement behavior, and with PC that casing links to each other on demonstrate in real time pavement behavior.
The technical scheme that the present invention takes provides a kind of contactless road conditions detection system, it is characterized in that, comprises
Be used for the transmitter towards the parallel Infrared of road surface emission two bundles,
One receives the detector through the reflection ray after the diffuse reflection of ground, described detector front end is provided with the taper collective optics, reflection ray converges to a less end through the larger end of described taper collective optics, and the less end of described taper collective optics is towards described detector;
Also comprise the control circuit board that the control transmitter carries out light emission, signal that detector is received is processed.
The taper collective optics is cone shape or pyramid shape.
Described taper collective optics front end arranges a plano-convex lens, and described lens plane side is near the larger end of described taper collective optics, and described lens convex side is away from described taper collective optics.
Described detector front end arranges a color filter between taper collective optics and plano-convex lens.
Described transmitter comprises two infrared light supplies, and beam projecting the place ahead of each infrared light supply arranges a plano-convex lens, and light source is arranged at the focus place of lens.
Described transmitter, detector, control circuit board are arranged in the casing, and in the front side of transmitter, detector tank surface plane polishing glass are set.
In casing, also be provided with one with described transmitter same towards infrared temperature-test sensor, described infrared temperature-test sensor front end arranges a zinc selenide window in tank surface.
To achieve these goals, need to select suitable infrared light supply, for different pavement behavior specific absorption coefficient is arranged.According to the optical wavelength of two infrared light supplies, ice, snow there is special absorption reflected value, in order to judge the different situations on road surface.By analysis, the infrared light wavelength of described two one of them emissions of infrared light supply is at the absorption peak wave band of water, and the infrared light wavelength of another emission is at the absorption peak wave band of snow.
One of them is water absorption bands 900nm-1100nm for the infrared light wavelength of described two infrared light supplies emission, and another is snow absorption bands 700nm-1100nm.Under two wave bands, ice is all without obviously absorbing.Preferably, the infrared band of two infrared light supply emissions is 950nm and 880nm, and detector all has higher response under these two wave bands.
Compared with prior art, the remarkable advantage that has of the present invention is:
(1) selects unique two emissions, single optical texture that receives, in conjunction with detector for the diffuse comparison of signal of two emission light beams, can comprehensively judge road surface rain, snow, ice or dry situation, has independently temperature measurement fraction, simple in structure, but multiple functional, realize the complete detection of various road environments;
(2) the taper collective optics in the detector front end uniqueness is the light cone design, can automatically be adjusted to picture point, increase the light intensity that detector receives, remedied the drawback of only using lens in detector front end, the effect of converging of light is better than the use single lens, make the light signal that receives not be subjected to the impact of facula position, testing result is more accurate;
(3) unique cabinet design all is integrated in the casing control of sending and receiving apparatus and circuit, and casing can be installed on the electric pole of road both sides easily, arranges flexibly, communicates by letter with PC by cable, realizes that fully contactless road conditions detect;
(4) cooperation of host computer and slave computer makes the real operation simple interface, and is multiple functional, and handled easily uses.
Description of drawings
Fig. 1 is the spectral absorption curve of typical snow;
Fig. 2 is the spectral absorption curve of typical water;
Fig. 3 is the spectral absorption curve of typical ice;
Fig. 4 is the side cut away view of measuring head;
Fig. 5 is the circuit process flow diagram;
Fig. 6 is software flow pattern.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Fig. 1 is the spectral reflectance curve of typical snow, and Fig. 2 is the curve of the dark water surface absorption spectra of 1mm, and Fig. 3 is the spectral reflectance curve of ice.
To sum up, finally select two light sources 2 of water absorption bands 900nm-1100nm and snow absorption bands 700nm-1100nm, under these two wave bands, ice is all without obviously absorbing.And the detector 3 of selecting all has higher response under two wave bands.
As shown in Figure 4, light source 1,2, detector 5 all are arranged in the casing 15.Each light source front end is equipped with plano-convex lens 3,4, and light source 1,2 lays respectively at lens 3,4 focus place, guarantees to launch earthward parallel beam, is respectively equipped with a plane polishing glass on casing 15 surfaces of lens 3,4 front ends.
Detector 5 is in order to receive through the reflection ray after the diffuse reflection of ground, detector 5 front ends are provided with light cone 6, color filter 7 and a plano-convex lens 8 successively in order to limit and to converge the light that receives, and are provided with equally a plane polishing glass on casing 15 surfaces of plano-convex lens 8 front ends.
Because the searching surface of detector 5 is very little, for light source 1,2 emission angle and all very sensitive to the distance on ground, so in detector 5 Front-end Design the structure of light cone 6 with lens 8 combinations.Light cone 6 is collective opticses of a kind of cone shape or pyramid shape.To hold greatly near the converging beam of the focusing surface that is placed on primary optical system during use, utilize the high reflectance characteristic of conical inboard wall, light beam will be guided to small end output, detector 5 will be placed small end, the light beam after accepting to concentrate.So just can reduce detector 5 for the sensitivity of environment, increase the light intensity that detector receives.
Further, the real time temperature that an infrared temperature-test sensor 10 is measured the road surface is set also in the casing 15, casing 15 surfaces of infrared temperature-test sensor 10 placements are equipped with a zinc selenide window 9, can directly temperature signal be passed to single-chip microcomputer by circuit board 11.
Be provided with circuit control panel in the casing 15, the design circuit plate is realized: control not simultaneously emission of two transmitting illuminants 1,2; Detector 5 is received the processing output of signal; The control of infrared temperature-test sensor 10 and the processing of signal output; Data process and with PC between communicate by letter.
During real work, two light sources are launched respectively: at first be to close light source 2, the 3 collimation emissions of light source 1 scioptics, the light process lens 8 of returning through the road surface diffuse reflection converge, optical filter 7 is removed parasitic lights, light cone 6 is adjusted to image planes automatically, finally be detected device 5 and receive, the signal that receives enters into single-chip microcomputer at last through amplifying denoising; In like manner close light source 1, the 4 collimation emissions of light source 2 scioptics are detected device 5 through diffusing of road surface and receive, and will enter single-chip microcomputer after the signal processing that receive.
Be the realization above-mentioned functions, shown in the circuit part design frame chart 5.
Circuit part mainly is divided into three parts: radiating circuit plate 12, circuit board for receiving 14 and control mainboard 13.In other embodiments, also these several plates can be integrated into one.
(1) the radiating circuit plate 12: under Single-chip Controlling, and control light source 1,2 emission.
(2) circuit board for receiving 14: the signal that detector 5 receives is gathered through two-stage amplification, filtering, AD conversion.Consider that the light intensity signal difference that different road surfaces receive is larger, measurement range selection is set for this reason.
(3) control mainboard 13:, whole system is controlled the output traffic information by single-chip microcomputer.
When being provided with infrared temperature-test sensor 10 in the casing 15, also comprise the circuit board 11 that the temperature signal that detects is carried out acquisition process.
For the processing of the signal that collects, by the software cooperation realization of host computer and slave computer.The process flow block diagram of signal as shown in Figure 6.
The absorption peak wave band of transmitting illuminant 1(water at first), detects absorption value and the reference signal strength value of detector, check whether the road surface has absorption or mirror-reflection to light source 1; Then the absorption peak wave band of transmitting illuminant 2(ice), detect equally the absorption value of detector, look into to see if there is and absorb or mirror-reflection; Signal value comparison process with twice: if to light source 1 have absorb but to light source 2 without absorbing, then the road surface is for there being water state; If without absorbing but light source 2 is had absorption, then the road surface is the accumulated snow state to light source 1; If all without absorbing, then be dry pavement to light source 1 and light source 2; If the reception signal of light source 1 and light source 2 is all very weak, then pavement behavior is the state that freezes, ice face generation mirror-reflection.
By the software debugging of host computer, can realize real-time demonstration, data storage, the functions such as ice and snow road conditions warning.Easy for installation, simple to operate.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (8)
1. a contactless road conditions detection system is characterized in that, comprises
Be used for the transmitter towards the parallel Infrared of road surface emission two bundles,
One receives the detector through the reflection ray after the diffuse reflection of ground, described detector front end is provided with the taper collective optics, reflection ray converges to a less end through the larger end of described taper collective optics, and the less end of described taper collective optics is towards described detector;
Also comprise the control circuit board that the control transmitter carries out light emission, signal that detector is received is processed.
2. described contactless road conditions detection system according to claim 1 is characterized in that, the taper collective optics is cone shape or pyramid shape.
3. described contactless road conditions detection system according to claim 2, it is characterized in that, described taper collective optics front end arranges a plano-convex lens, and described lens plane side is near the larger end of described taper collective optics, and described lens convex side is away from described taper collective optics.
4. described contactless road conditions detection system according to claim 3 is characterized in that, described detector front end arranges a color filter between taper collective optics and plano-convex lens.
5. described contactless road conditions detection system according to claim 1 is characterized in that, described transmitter comprises two infrared light supplies, and beam projecting the place ahead of each infrared light supply arranges a plano-convex lens, and light source is arranged at the focus place of lens.
6. according to claim 1,4 or 5 described contactless road conditions detection systems, it is characterized in that, described transmitter, detector, control circuit board are arranged in the casing, and in the front side of transmitter, detector tank surface plane polishing glass are set.
7. described contactless road conditions detection system according to claim 6 is characterized in that, in casing, also be provided with one with described transmitter same towards infrared temperature-test sensor, described infrared temperature-test sensor front end arranges a zinc selenide window in tank surface.
8. described contactless road conditions detection system according to claim 5 is characterized in that, the infrared light wavelength of described two one of them emissions of infrared light supply is at the absorption peak wave band of water, and the infrared light wavelength of another emission is at the absorption peak wave band of ice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265187.3A CN103366580B (en) | 2013-06-28 | 2013-06-28 | Non-contact type road condition detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265187.3A CN103366580B (en) | 2013-06-28 | 2013-06-28 | Non-contact type road condition detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103366580A true CN103366580A (en) | 2013-10-23 |
| CN103366580B CN103366580B (en) | 2015-08-12 |
Family
ID=49367824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310265187.3A Active CN103366580B (en) | 2013-06-28 | 2013-06-28 | Non-contact type road condition detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103366580B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677595A (en) * | 2017-11-16 | 2018-02-09 | 北京百纳友为科技有限公司 | Frictional index detection means |
| CN108151799A (en) * | 2017-12-05 | 2018-06-12 | 中国科学院合肥物质科学研究院 | A kind of contactless road surface state monitoring device of multispectral multi-angle and method |
| CN108917598A (en) * | 2018-06-28 | 2018-11-30 | 武汉华星光电技术有限公司 | A kind of wet equipment and its sensing device |
| CN110108356A (en) * | 2019-06-06 | 2019-08-09 | 四川京炜数字科技有限公司 | A kind of vehicle-mounted road graticule retroreflection brightness coefficient test device |
| CN110517444A (en) * | 2019-09-06 | 2019-11-29 | 河南和汇仪器设备有限公司 | A kind of urban road icing source of early warning |
| CN113050186A (en) * | 2021-03-09 | 2021-06-29 | 复旦大学 | Non-contact road surface state monitoring system |
| CN114518608A (en) * | 2021-12-22 | 2022-05-20 | 上海索迪龙自动化有限公司 | Optical sensor device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005696A1 (en) * | 1977-03-19 | 1979-12-12 | Peter Dr.-Ing. Decker | Slippery road alarming device |
| US4690553A (en) * | 1979-06-29 | 1987-09-01 | Omron Tateisi Electronics Co. | Road surface condition detection system |
| CN1809853A (en) * | 2003-03-14 | 2006-07-26 | 利瓦斯有限责任公司 | A device for detection of road surface condition |
| CN101995417A (en) * | 2009-08-11 | 2011-03-30 | G·卢夫特·梅斯调节技术有限责任公司 | Contact-less freezing temperature determination |
| CN102967561A (en) * | 2012-12-11 | 2013-03-13 | 河南中原光电测控技术有限公司 | Backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method |
| CN203397522U (en) * | 2013-06-28 | 2014-01-15 | 苏州奥特福环境科技有限公司 | Non-contact road situation detection system |
-
2013
- 2013-06-28 CN CN201310265187.3A patent/CN103366580B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0005696A1 (en) * | 1977-03-19 | 1979-12-12 | Peter Dr.-Ing. Decker | Slippery road alarming device |
| US4690553A (en) * | 1979-06-29 | 1987-09-01 | Omron Tateisi Electronics Co. | Road surface condition detection system |
| CN1809853A (en) * | 2003-03-14 | 2006-07-26 | 利瓦斯有限责任公司 | A device for detection of road surface condition |
| CN101995417A (en) * | 2009-08-11 | 2011-03-30 | G·卢夫特·梅斯调节技术有限责任公司 | Contact-less freezing temperature determination |
| CN102967561A (en) * | 2012-12-11 | 2013-03-13 | 河南中原光电测控技术有限公司 | Backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method |
| CN203397522U (en) * | 2013-06-28 | 2014-01-15 | 苏州奥特福环境科技有限公司 | Non-contact road situation detection system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677595A (en) * | 2017-11-16 | 2018-02-09 | 北京百纳友为科技有限公司 | Frictional index detection means |
| CN108151799A (en) * | 2017-12-05 | 2018-06-12 | 中国科学院合肥物质科学研究院 | A kind of contactless road surface state monitoring device of multispectral multi-angle and method |
| CN108917598A (en) * | 2018-06-28 | 2018-11-30 | 武汉华星光电技术有限公司 | A kind of wet equipment and its sensing device |
| CN110108356A (en) * | 2019-06-06 | 2019-08-09 | 四川京炜数字科技有限公司 | A kind of vehicle-mounted road graticule retroreflection brightness coefficient test device |
| CN110108356B (en) * | 2019-06-06 | 2024-04-19 | 四川京炜数字科技有限公司 | Vehicle-mounted road marking retroreflection brightness coefficient testing device |
| CN110517444A (en) * | 2019-09-06 | 2019-11-29 | 河南和汇仪器设备有限公司 | A kind of urban road icing source of early warning |
| CN113050186A (en) * | 2021-03-09 | 2021-06-29 | 复旦大学 | Non-contact road surface state monitoring system |
| CN114518608A (en) * | 2021-12-22 | 2022-05-20 | 上海索迪龙自动化有限公司 | Optical sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103366580B (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103366580B (en) | Non-contact type road condition detection system | |
| CN205424432U (en) | On -vehicle overhead type multiple beam laser natural gas leakage telegauge | |
| CN108151799B (en) | Multispectral multi-angle non-contact type pavement state monitoring device and method | |
| CN105427633A (en) | Intelligent traffic light control system | |
| CN103149605A (en) | Laser raindrop spectrograph | |
| US9284065B2 (en) | Aircraft docking system | |
| CN202421069U (en) | Vehicle-mounted laser-induced breakdown spectroscopy detector for heavy metals in farmland soil | |
| CN110646380B (en) | Retroreflection detection system and retroreflection detector for road marking | |
| CN104111413A (en) | Device and method used for assessing corona discharge of electric transmission and transformation equipment | |
| CN101692307B (en) | Expressway fog real-time monitoring instrument | |
| CN104950352A (en) | Optical rainfall detecting method, detecting device and light guide device | |
| CN104913796A (en) | Long-distance correlated photoelectric sensor based on aspheric lens | |
| CN204679040U (en) | A kind of pavement condition sensor | |
| CN102346264B (en) | Rainfall sensor and rainfall detection method | |
| CN101995394A (en) | Mist zone visibility detection method and equipment | |
| CN203397522U (en) | Non-contact road situation detection system | |
| CN111273377B (en) | High-speed group fog recognition and positioning system | |
| CN201666871U (en) | Visibility detection device at mist zone | |
| KR20150051697A (en) | Apparatus for providing lane keeping function using radar and method thereof | |
| CN211577461U (en) | High-speed group fog identifying and positioning system | |
| CN109916318A (en) | Portable ice and snow sensing device for road face | |
| CN104792713A (en) | Drunk-driving remote-detection system based on semiconductor laser absorption spectrum technology and measuring method implemented by adopting drunk-driving remote-measuring system | |
| CN109532941A (en) | The contactless detection method of high-speed rail non-fragment orbit information of road surface | |
| CN104374375A (en) | Appearance detecting system of vehicle-mounted transponder | |
| CN209264249U (en) | A kind of test of light source device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151123 Address after: 215301 Kunshan City, Jiangsu province high tech Zone, Fung Road, No. 232, No. Patentee after: Suzhou Aodeke Photoelectric Co., Ltd. Address before: Yuanfeng Road Industrial Park in Kunshan City, Zhejiang robot in Suzhou City, Jiangsu province Kunshan 215300 intelligent equipment industry base 3 building three layer Patentee before: Suzhou Aotefu Environmental Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301 Kunshan City, Jiangsu province high tech Zone, Fung Road, No. 232, No. Patentee after: Suzhou Mandke photoelectric Co Ltd Address before: 215301 Kunshan City, Jiangsu province high tech Zone, Fung Road, No. 232, No. Patentee before: Suzhou Aodeke Photoelectric Co., Ltd. |