CN103366580B - Non-contact type road condition detection system - Google Patents
Non-contact type road condition detection system Download PDFInfo
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- CN103366580B CN103366580B CN201310265187.3A CN201310265187A CN103366580B CN 103366580 B CN103366580 B CN 103366580B CN 201310265187 A CN201310265187 A CN 201310265187A CN 103366580 B CN103366580 B CN 103366580B
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Abstract
The invention discloses a kind of Non-contact type road condition detection system, comprise the transmitter for launching the parallel Infrared of two bundles towards road surface, the detector of the reflection ray of one reception after the diffuse reflection of ground, described detector front end is provided with taper collective optics, reflection ray converges to less one end through described larger one end of taper collective optics, and described less one end of taper collective optics is towards described detector; Also comprise the control circuit board that control transmitter is carried out light emission, processed the signal of detector reception.Non-contact detection system of the present invention can be arranged on the electric pole of roadside, for detecting the situations such as highway pavement ice, snow, rainwater.Introduce the structure that unique lens combine with taper collective optics, automatically can be adjusted to picture point, increase the light intensity that detector receives, make the light signal received not by the impact of facula position, testing 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 situation such as non-contact road surface rain, snow, ice on a kind of electric pole that can be arranged on road both sides.
Background technology
The adverse weathers such as rain, snow, mist descend, there will be the severe road conditions such as such as low visibility, (ponding) icy on road skidding, contain 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 adverse weather.
Adverse weather road conditions information gathering is the basis of early warning and control, and conventional road traffic road conditions detection method is generally artificial or uses sensor apparatus equipment Inspection.Manual detection error is large, and easily undetected; Road surface sensor O&M is not convenient and on the high side.Domestic highway ubiquity road condition monitoring along the line facility is incomplete, and monitored density and key element do not reach the problems such as requirement.Although many crossings and black spot have installed video shooting device gradually, also substantially rely on man-machine interaction; Under damaging climatic conditions, more than during highway passes through and manages, adopt traditional personal monitoring.Due to weather conditions information on highway can not be grasped in time, provide real-time weather and traffic information to driver, be often just had major accident to occur before administrative authority takes measures.Major part weather detection devices is expensive, and technical merit is higher, but because of management improper use, lacks necessary maintenance and metering, cause a considerable amount of equipment to be in idle state for a long time.
Lacking efficiently and accurately and facilitate again feasible real-time pavement detection system, is the significant problem that China faces now.
Summary of the invention
The object of the invention is to solve prior art Problems existing, 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 to incide different material surface and will produce not same-action and then obtain the principle of scattered light of varying strength, the technical scheme principle adopted is: use LED infrared light supply, parallel infrared beam is launched earthward by the control circui in casing, the voltage signal of the scattered light intensity received by comparator probe, judge pavement behavior, and demonstrate pavement behavior in real time on the PC be connected with casing.
The technical scheme that the present invention takes is to provide a kind of Non-contact type road condition detection system, it is characterized in that, comprises
For launching the transmitter of the parallel Infrared of two bundles towards road surface,
The detector of the reflection ray of one reception after the diffuse reflection of ground, described detector front end is provided with taper collective optics, reflection ray converges to less one end through described larger one end of taper collective optics, and described less one end of taper collective optics is towards described detector;
Also comprise the control circuit board that control transmitter is carried out light emission, processed the signal of detector reception.
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 described larger one end of taper collective optics, and described convex lens surface 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 the beam projecting front 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 a casing, and arrange flat polished glass in the front side tank surface of transmitter, detector.
Also be provided with in casing 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, suitable infrared light supply need be selected, have specific absorption coefficient for different pavement behavior.According to the optical wavelength of two infrared light supplies, there is special absorption reflected value, in order to judge the different situations on road surface to ice, snow.By analysis, one of them infrared light wavelength launched of described two infrared light supplies is at the absorption peak wave band of water, and another infrared light wavelength launched is at the absorption peak wave band of snow.
The infrared light wavelength launched of described two infrared light supplies one of them be water absorption bands 900nm-1100nm, another is for avenging absorption bands 700nm-1100nm.Under two wave bands, ice is all without obviously absorbing.Preferably, the infrared band of two infrared light supply transmittings is 950nm and 880nm, and detector all has higher response under these two wave bands.
Compared with prior art, the remarkable advantage that the present invention has is:
(1) unique two transmittings, single optical texture received is selected, diffuse for two transmitted beam in conjunction with detector the comparison of signal, comprehensively can judge road surface rain, snow, ice or the situation of drying, there is independently temperature measurement fraction, structure is simple, but multiple functional, realize the complete detection of various road environment;
(2) unique taper collective optics and light cone design is held before the detectors, automatically picture point can be adjusted to, increase the light intensity that detector receives, compensate for the drawback of holding before the detectors and only using lens, the convergence effect of light is better than use single lens, make the light signal received not by the impact of facula position, testing result is more accurate;
(3) unique cabinet design, make sending and receiving apparatus and control circui all be integrated in a casing, casing can be arranged on the electric pole of road both sides easily, arranges flexibly, is communicated by cable with PC, realizes Non-contact type road condition completely and detects;
(4) cooperation of host computer and slave computer, makes real operation simple interface, multiple functional, and handled easily uses.
Accompanying drawing explanation
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 circuit process flow diagram;
Fig. 6 is software flow pattern.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Fig. 1 is the spectral reflectance curve of typical snow, and Fig. 2 is the curve of the water surface absorption spectra that 1mm is dark, and Fig. 3 is the spectral reflectance curve of ice.
To sum up, final two light sources 2 selecting 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 selected all has higher response under two wave bands.
As shown in Figure 4, light source 1,2, detector 5 is all arranged in a casing 15.Each light source front end is equipped with plano-convex lens 3,4, and light source 1,2 lays respectively at the focus place of lens 3,4, guarantees to launch parallel beam earthward, is respectively equipped with a flat polished glass on casing 15 surface of lens 3,4 front end.
Detector 5 is in order to receive the reflection ray after the diffuse reflection of ground, detector 5 front end is provided with the light that light cone 6, color filter 7 and a plano-convex lens 8 receive in order to restriction and convergence successively, is provided with a flat polished glass equally on casing 15 surface of plano-convex lens 8 front end.
Because the searching surface of detector 5 is very little, for the emission angle of light source 1,2 and all very sensitive to the distance on ground, so the structure that light cone 6 is combined with lens 8 in detector 5 Front-end Design.Light cone 6 is collective opticses of a kind of cone shape or pyramid shape.Converging beam near focusing surface during use, end being greatly placed on primary optical system, utilizes the high reflectance characteristic of conical inboard wall, light beam is guided to small end and export, detector 5 is placed in small end, accept the light beam after concentrating.So just can reduce the sensitivity of detector 5 for environment, increase the light intensity that detector receives.
Further, also arrange the real time temperature that an infrared temperature-test sensor 10 measures road surface in casing 15, casing 15 surface of infrared temperature-test sensor 10 placement is provided with a zinc selenide window 9, directly temperature signal can be passed to single-chip microcomputer by circuit board 11.
Be provided with circuit control panel in casing 15, design circuit plate realizes: launch when controlling two transmitting illuminants 1,2 differences; Process detector 5 being received to signal exports; The control of infrared temperature-test sensor 10 and the process of signal export; Data processing and and PC between communication.
During real work, two light sources are launched respectively: be first close light source 2, light source 1 scioptics 3 collimated emission, the light of returning through road surface diffuse reflection converges through lens 8, optical filter 7 removes parasitic light, light cone 6 is adjusted to image planes automatically, finally be detected device 5 received, the signal received finally enters into single-chip microcomputer through amplifying denoising; In like manner close light source 1, light source 2 scioptics 4 collimated emission, be detected device 5 receive through diffusing of road surface, and enter single-chip microcomputer by after the signal transacting received.
For realizing above-mentioned functions, shown in circuit part design frame chart 5.
Circuit part is mainly divided into three parts: radiating circuit plate 12, circuit board for receiving 14 and control mainboard 13.In other embodiments, also these several blocks of plates can be integrated into one piece.
(1) radiating circuit plate 12: under Single-chip Controlling, controls the transmitting of light source 1,2.
(2) circuit board for receiving 14: the signal that detector 5 receives is collected through two-stage amplification, filtering, AD conversion.Consider that the light intensity signal difference that different road surface receives is comparatively large, measurement range selection is set for this reason.
(3) control mainboard 13: by single-chip microcomputer, whole system is controlled, export traffic information.
When being provided with infrared temperature-test sensor 10 in casing 15, also comprise the circuit board 11 temperature signal detected being carried out to acquisition process.
For the process of the signal collected, coordinate realization by the software of host computer and slave computer.The process flow block diagram of signal as shown in Figure 6.
First the absorption peak wave band of transmitting illuminant 1(water), detect absorption value and the reference signal strength value of detector, check whether road surface has absorption or mirror-reflection to light source 1; Then the absorption peak wave band of transmitting illuminant 2(ice), the same absorption value detecting detector, looks into and sees if there is absorption or mirror-reflection; The signal value of twice is compared process: if to light source 1 have absorption but to light source 2 without absorption, then road surface is for there being water state; If to light source 1 without absorbing but having absorption to light source 2, then road surface is accumulated snow state; If to light source 1 and light source 2 all without absorption, be then dry pavement; If the Received signal strength of light source 1 and light source 2 is all very weak, then pavement behavior is icing condition, and mirror-reflection occurs in ice face.
By the software debugging of host computer, can realize real-time display, data store, the functions such as ice and snow road conditions warning.Easy for installation, simple to operate.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. a Non-contact type road condition detection system, is characterized in that, comprises
For launching the transmitter of the parallel Infrared of two bundles towards road surface,
The detector of the reflection ray of one reception after the diffuse reflection of ground, described detector front end is provided with taper collective optics, reflection ray converges to less one end through described larger one end of taper collective optics, and described less one end of taper collective optics is towards described detector;
Also comprise the control circuit board that control transmitter is carried out light emission, processed the signal of detector reception;
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 described larger one end of taper collective optics, and described convex lens surface side is away from described taper collective optics.
2. Non-contact type road condition detection system according to claim 1, it is characterized in that, described detector front end arranges a color filter between taper collective optics and plano-convex lens.
3. Non-contact type road condition detection system according to claim 1, it is characterized in that, described transmitter comprises two infrared light supplies, and the beam projecting front of each infrared light supply arranges a plano-convex lens, and light source is arranged at the focus place of lens.
4. Non-contact type road condition detection system according to claim 1,2 or 3, it is characterized in that, described transmitter, detector, control circuit board are arranged in a casing, and arrange flat polished glass in the front side tank surface of transmitter, detector.
5. Non-contact type road condition detection system according to claim 4, is characterized in that, be also provided with in casing 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.
6. Non-contact type road condition detection system according to claim 3, is characterized in that, one of them infrared light wavelength launched of described two infrared light supplies is at the absorption peak wave band of water, and another infrared light wavelength launched is at the absorption peak wave band of snow.
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Families Citing this family (6)
| 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 |
| CN108151799B (en) * | 2017-12-05 | 2020-08-07 | 中国科学院合肥物质科学研究院 | Multispectral multi-angle non-contact type pavement state monitoring device 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 |
| CN110517444B (en) * | 2019-09-06 | 2021-05-04 | 安徽飞科交通设备制造有限公司 | Urban road freezes early warning equipment |
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712199C2 (en) * | 1977-03-19 | 1979-05-03 | Peter Dipl.-Ing. Dr.-Ing. 8000 Muenchen Decker | Device for warning of slippery roads |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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. |
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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. |