CN205068772U - Light curtain laser traffic condition survey system - Google Patents
Light curtain laser traffic condition survey system Download PDFInfo
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- CN205068772U CN205068772U CN201520588613.1U CN201520588613U CN205068772U CN 205068772 U CN205068772 U CN 205068772U CN 201520588613 U CN201520588613 U CN 201520588613U CN 205068772 U CN205068772 U CN 205068772U
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Abstract
The utility model provides a light curtain laser traffic condition survey system, it is including spaning the mounting bracket of locating the road top, install laser sensor host computer and auxiliary engine on the mounting bracket respectively, its output laser is light curtain laser, host computer and auxiliary engine are along motor vehicle travel direction spaced, host computer and auxiliary engine respectively have laser emission unit and laser receiving unit, the laser light curtain of two laser emission unit transmissiones projects the road surface parallelly, this host computer is still including operation the control unit, two laser receiving unit respectively with vehicle data transmission to the control algorithm unit of control algorithm unit electrical connection in order recording separately. Above -mentioned system adopts two laser instruments, and leak car can be avoided to transmission parallel light curtain, and to each vehicle that crosses, the homoenergetic respectively records a set of data by host computer and auxiliary engine, is undertaken by operation the control unit that data are compared and the algorithm correction again, makes the traffic condition survey data of exporting more accurate. There are not wearing and tearing in the use, and simple structure, convenient operation.
Description
Technical field
The utility model relates to road traffic control technical field, is specifically related to a kind of light curtain laser transport investigation system.
Background technology
Along with China's rapid development of economy, increasing rapidly of vehicle guaranteeding organic quantity, vehicle progresses in average family.In recent years, the especially flourishing urban road in many cities and highway vehicle flowrate obviously increase, and traffic safety status is severeer.Therefore, traffic administration is more important, and transport investigation is one of Main Basis of traffic administration and Transport Facility Construction decision-making.At present, road traffic condition respondent has vehicle flowrate, spot spe J, time headway, usually with transport investigation data such as car number percent, space headway, time occupancies.The detection modes such as main employing coil, piezoelectricity, ultrasound wave, microwave, video, each mode is compared as follows:
1. coil+video: can only long, the axletree number of measuring car, can not measuring car high, can not measuring car head height and wheel number, so somatotype is forbidden, and need road closure to cut road surface open to install complicated, and video affects misjudgment easily by weather and light;
2. coil+video+piezoelectricity bar: can long, the axletree number of measuring car and wheel number, can not measuring car high and headstock is high, so somatotype is forbidden, and need road closure to cut road surface open complexity is installed.And video affects misjudgment easily by weather and light;
3. radar: can only measure the speed of a motor vehicle, vehicle commander, can not measure that overall height, headstock are high, axletree number, wheel number, and the somatotype for one or two class cars and two or three class cars is easily made mistakes;
4. scan laser: the laser somatotype equipment applied at present is all pass through multi-point scanning abroad, its maximum problem is that scanning laser sensor frequency is not high, vehicle for fast running is difficult to accurately test the speed, thus can not get vehicle commander accurately, and there is mechanical wear, expense is higher, is not suitable for popularizing.
Utility model content
In view of this, a kind of mechanical is provided to wear and tear and typing data light curtain laser transport investigation system accurately.
A kind of light curtain laser transport investigation system, comprise the erecting frame across being located at above road, be installed on the laser sensor main frame on erecting frame and laser sensor slave respectively, the Output of laser of described laser sensor main frame and slave is light curtain laser, described laser sensor main frame and slave are being placed along interval, motor-driven vehicle going direction, described laser sensor main frame and slave respectively have laser emission element and laser pick-off unit, the laser light curtain of two laser emission element transmittings projects road surface abreast, described laser sensor main frame also comprises Operations Analysis, two laser pick-off unit are electrically connected with the vehicle data transmission that will record separately to control algorithm unit with control algorithm unit respectively.
Further, the laser light curtain of described two laser emission elements transmitting is respectively perpendicular to direction of traffic.
Further, described laser sensor main frame and slave spacing distance are 0.5 meter ~ 2 meters.
Further, described laser sensor main frame is identical with the setting height(from bottom) of slave and be 6-8 rice.
Further, the transmitter unit of described laser sensor main frame and slave has laser beam expanding structure respectively.
Further, described extender lens is for bearing cylindrical lens or concave lens or expanding compound lens.
Further, the laser light curtain of two laser emission element transmittings projects the width on road surface is 2.0-4.5 rice.
Further, described control algorithm unit comprises interference value module, is repeatedly averaged module, vehicle location judge module and counting statistics module, described in go interference value module to remove for the data that detect vehicle by non-and apparent error data; The described module that is repeatedly averaged is that the data recorded are averaged rear output with the unit interval; Described vehicle location judge module is used for measuring the speed of a motor vehicle, vehicle commander and overall height; Described counting statistics module is built-in with multiple vehicle standard model bank, for according to vehicle commander, overall height and laser instrument to vehicle continuously high speed distance measurement value, draw vehicle ' s contour, and contrast, to classify according to national standard to vehicle with model bank by vehicle commander, overall height and wheel are wide.
Further, described vehicle location judge module comprises headstock judge module, for carrying out range observation by laser sensor main frame and slave continuously to the vehicle of running at high speed on road, and compare laser sensor continuously the distance change of detection vehicle feedback and number of times change whether reach predetermined value, and judge headstock position instantaneously when reaching predetermined value.
Further, described vehicle location judge module comprises speed of a motor vehicle computing module, vehicle commander's computing module and overall height computing module, described speed of a motor vehicle computing module is used for according to the time of headstock by two laser instruments, and the tailstock is by the time of two laser instruments, and then calculate headstock and the tailstock speed through laser instrument, draw Vehicle Speed after average; Described vehicle commander's computing module calculates vehicle commander for being multiplied by the headstock tailstock mistiming according to the speed of a motor vehicle, described overall height computing module is for carrying out range observation through laser sensor continuously to the vehicle travelled on road, by the change of continuously detection vehicle vehicle body distance, show that vehicle body is high.
Above-mentioned light curtain laser transport investigation system adopts laser sensor main frame and slave, launch bright dipping curtain laser respectively, and parallel projection is to road surface, cover track, can ensure not leak car, and to the vehicle that each crosses, and to the vehicle that each crosses, all can respectively record one group of data by main frame and slave, then carry out comparing and algorithm correction by Operations Analysis, make the transport investigation data of output more accurate.Whole system is fixing to be used, and without wearing and tearing, and structure is simple, and easy to operate, cost is lower, can be widely used in intelligent transportation field.
Accompanying drawing explanation
Fig. 1 is the structural representation of the light curtain laser transport investigation system of the utility model embodiment.
Fig. 2 is the modular structure schematic diagram of the light curtain laser transport investigation system of the utility model embodiment.
Fig. 3 shows the modular structure schematic diagram of the Operations Analysis in Fig. 2.
Embodiment
Below with reference to specific embodiments and the drawings, the utility model is described in detail.
Refer to Fig. 1 and 2, the light curtain laser transport investigation system 10 of the utility model embodiment is shown, it comprises the erecting frame 11 across being located at above road, be installed on the laser sensor main frame 12 on erecting frame 11 and laser sensor slave 13 respectively, the Output of laser of described laser sensor main frame 12 and slave 13 is light curtain, be respectively main frame light curtain 126 and slave light curtain 136, described laser sensor main frame 12 and slave 13 are arranged at interval arranged side by side on road bearing of trend, described laser sensor main frame 12 and slave 13 respectively have laser emission element 121, 131 and laser pick-off unit 122, 132, two laser emission elements 121, 131 laser light curtains 126 launched, 136 project road surface 15 abreast, described laser sensor main frame 12 also comprises Operations Analysis 123, two laser pick-off unit 121, 131 are electrically connected with the vehicle data transmission that will record separately to control algorithm unit 123 with control algorithm unit 123 respectively.
Particularly, erecting frame 11 is preferably portal frame, and the height of portal frame is preferably 6-8 rice, and laser sensor main frame 12 and slave 13 are installed on back timber 112.Laser sensor main frame 12 is identical with the setting height(from bottom) of slave 13 and be 6-8 rice.Laser sensor main frame 12 and slave 13 are installed on a mounting rod 113, and mounting rod 113 is perpendicular to back timber 112, and laser sensor main frame 12 and slave 13 lay respectively at the two ends of mounting rod 113.Preferably, the laser light curtain 126,136 of two laser emission element 121,131 transmittings is respectively perpendicular to road surface 15.Further, described laser sensor main frame 12 and slave 13 spacing distance are 0.5 meter ~ 2 meters.The width that the laser light curtain that two laser emission elements 121,131 are launched projects road surface is 2.0-4.5 rice.Further, the frequency of the Output of laser of described laser sensor main frame 12 and slave 13 can be but be not limited to 1.5 ten thousand times/second.
The transmitter unit of laser sensor main frame 12 and slave 13 has respectively and expands structure.Extender lens be preferably 905nm anti-reflection and filter concave lens or half recessed half plano lens or negative cylindrical lens.
As shown in Figure 3, control algorithm unit 123 comprises interference value module 124, is repeatedly averaged module 125, vehicle location judge module 126 and counting statistics module 127, described in go interference value module 124 to remove for the data that detect vehicle by non-and apparent error data; The described module 125 that is repeatedly averaged is that the data recorded are averaged rear output with the unit interval; Described vehicle location judge module 126 is for measuring the speed of a motor vehicle, vehicle commander and overall height; Described counting statistics module 127 is built-in with multiple vehicle standard model bank, for according to vehicle commander, overall height and laser instrument to vehicle continuously high speed distance measurement value, draw vehicle ' s contour, and contrast, to classify according to national standard to vehicle with model bank by vehicle commander, overall height and wheel are wide.
Particularly, vehicle location judge module 126 comprises headstock judge module, for carrying out range observation by laser sensor main frame and slave continuously to the vehicle of running at high speed on road, and compare laser sensor continuously the distance change of detection vehicle feedback and number of times change whether reach predetermined value, and judge headstock position instantaneously when reaching predetermined value.Vehicle location judge module 126 comprises speed of a motor vehicle computing module, vehicle commander's computing module and overall height computing module, described speed of a motor vehicle computing module is used for according to the time of headstock by two laser instruments, and the tailstock is by the time of two laser instruments, and then calculate headstock and the tailstock speed through laser instrument, draw Vehicle Speed after average; Described vehicle commander's computing module calculates vehicle commander for being multiplied by the headstock tailstock mistiming according to the speed of a motor vehicle, described overall height computing module is for carrying out range observation through laser sensor continuously to the vehicle travelled on road, by the change of continuously detection vehicle vehicle body distance, show that vehicle body is high.
During practical application, as shown in the figure, when there being vehicle 16 to enter measurement range, laser sensor main frame 12 and slave 13 successively sense, two laser sensors carry out range observation by with very high frequency continuously to the vehicle 16 of running at high speed on road surface 15, by the change of continuously detection range, just can guarantee headstock position accurately to be detected when adding up to reach certain number of times, whether the distance change frequency namely comparing Laser feedback by vehicle location judge module reaches pre-determined number, and judges headstock position when reaching pre-determined number.To the vehicle 16 that each crosses, sensor host machine 12 and slave 13 are measured respectively, an one state car all can trigger twice measurement, the time of measuring car head by two laser sensors 12 and 13 is carried out with this, the tailstock is by the time of two laser sensors 12 and 13, and then calculate headstock and the speed of the tailstock through laser sensor 12 and 13 time, it is average, obtain vehicle 16 travel speed accurately, be multiplied by the headstock tailstock mistiming by the speed of a motor vehicle again and calculate vehicle commander accurately, measure overall height by the distance value of feedback; Again according to vehicle commander, overall height and laser sensor 12,13 pairs of vehicles 16 continuously high speed distance measurement value, formation wheel is wide, again by vehicle commander, overall height and wheel model bank that is wide and various standard contrast, thus classify accurately according to relevant national standard to vehicle.Also further headstock time, the speed of a motor vehicle, vehicle commander, vehicle directly can be outputted to transport investigation center with RS-485 by laser instrument, for transport investigation center calculation vehicle flowrate, spot spe J, time headway, with transport investigation data such as car number percent, space headway, time occupancies.
It can thus be appreciated that, above-mentioned light curtain laser transport investigation system 10 adopts laser sensor main frame 12 and slave 13, launch bright dipping curtain laser 126 and 136 respectively, and parallel projection is to road surface 15, cover track, can ensure not leak car, and to the vehicle that each crosses, laser sensor main frame 12 and slave 13 respectively trigger once, twice, record a pair vehicle data simultaneously, average, can more accurately draw overall height, the speed of a motor vehicle, vehicle commander, body outline, accurately obtain transport investigation data thus.Whole system is fixing to be used, and without wearing and tearing, and structure is simple, and easy to operate, cost is lower, can be widely used in intelligent transportation field.
It should be noted that; the utility model is not limited to above-mentioned embodiment; according to creative spirit of the present utility model; those skilled in the art can also make other changes; these changes done according to creative spirit of the present utility model, all should be included within the utility model scope required for protection.
Claims (7)
1. a light curtain laser transport investigation system, it is characterized in that, described system comprises the erecting frame across being located at above road, be installed on the laser sensor main frame on erecting frame and laser sensor slave respectively, the Output of laser of described laser sensor main frame and slave is light curtain laser, described laser sensor main frame and slave are being placed along interval, motor-driven vehicle going direction, described laser sensor main frame and slave respectively have laser emission element and laser pick-off unit, the laser light curtain of two laser emission element transmittings projects road surface abreast, described laser sensor main frame also comprises Operations Analysis, two laser pick-off unit are electrically connected with the vehicle data transmission that will record separately to control algorithm unit with control algorithm unit respectively.
2. light curtain laser transport investigation system as claimed in claim 1, is characterized in that, the laser light curtain that described two laser emission elements are launched is respectively perpendicular to direction of traffic.
3. light curtain laser transport investigation system as claimed in claim 1, it is characterized in that, described laser sensor main frame and slave spacing distance are 0.5 meter ~ 2 meters.
4. light curtain laser transport investigation system as claimed in claim 1, is characterized in that, described laser sensor main frame is identical with the setting height(from bottom) of slave and be 6-8 rice.
5. light curtain laser transport investigation system as claimed in claim 1, it is characterized in that, the transmitter unit of described laser sensor main frame and slave has laser beam expanding structure respectively.
6. light curtain laser transport investigation system as claimed in claim 5, it is characterized in that, described laser beam expanding structure is extender lens, and described extender lens is for negative cylindrical lens or concave lens or expand compound lens.
7. light curtain laser transport investigation system as claimed in claim 1, is characterized in that, the width that the laser light curtain that two laser emission elements are launched projects road surface is 2.0-4.5 rice.
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| CN201520588613.1U CN205068772U (en) | 2015-08-01 | 2015-08-01 | Light curtain laser traffic condition survey system |
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| CN201520588613.1U CN205068772U (en) | 2015-08-01 | 2015-08-01 | Light curtain laser traffic condition survey system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128106A (en) * | 2016-08-17 | 2016-11-16 | 重庆市华驰交通科技有限公司 | Traffic detection system |
| CN106710237A (en) * | 2017-03-31 | 2017-05-24 | 广州维脉电子科技有限公司 | Portable road-side laser traffic survey device and survey method thereof |
| CN107146419A (en) * | 2017-06-26 | 2017-09-08 | 黑龙江八农垦大学 | The automatic monitoring system of high speed moving vehicle |
| CN108759662A (en) * | 2018-04-02 | 2018-11-06 | 广州市杜格数控设备有限公司 | Vehicle overall dimension measurement method |
| CN109830109A (en) * | 2019-03-20 | 2019-05-31 | 北京交通大学 | A kind of road traffic monitoring equipment based on laser ranging |
| CN110208569A (en) * | 2019-06-10 | 2019-09-06 | 南京苏路通信息系统技术有限公司 | A kind of motor vehicle speed vehicle detection method based on the double-deck a wordline laser light curtain |
| CN110360947A (en) * | 2019-06-24 | 2019-10-22 | 广州市奥特创通测控技术有限公司 | A kind of vehicle's contour measurement method based on vector image measurement |
| CN112014855A (en) * | 2020-07-20 | 2020-12-01 | 江西路通科技有限公司 | Vehicle outline detection method and system based on laser radar |
| CN112133104A (en) * | 2020-08-21 | 2020-12-25 | 浙江大华技术股份有限公司 | Vehicle information detection method, device and system and storage medium |
-
2015
- 2015-08-01 CN CN201520588613.1U patent/CN205068772U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128106A (en) * | 2016-08-17 | 2016-11-16 | 重庆市华驰交通科技有限公司 | Traffic detection system |
| CN106710237A (en) * | 2017-03-31 | 2017-05-24 | 广州维脉电子科技有限公司 | Portable road-side laser traffic survey device and survey method thereof |
| CN107146419A (en) * | 2017-06-26 | 2017-09-08 | 黑龙江八农垦大学 | The automatic monitoring system of high speed moving vehicle |
| CN108759662A (en) * | 2018-04-02 | 2018-11-06 | 广州市杜格数控设备有限公司 | Vehicle overall dimension measurement method |
| CN109830109A (en) * | 2019-03-20 | 2019-05-31 | 北京交通大学 | A kind of road traffic monitoring equipment based on laser ranging |
| CN110208569A (en) * | 2019-06-10 | 2019-09-06 | 南京苏路通信息系统技术有限公司 | A kind of motor vehicle speed vehicle detection method based on the double-deck a wordline laser light curtain |
| CN110360947A (en) * | 2019-06-24 | 2019-10-22 | 广州市奥特创通测控技术有限公司 | A kind of vehicle's contour measurement method based on vector image measurement |
| CN112014855A (en) * | 2020-07-20 | 2020-12-01 | 江西路通科技有限公司 | Vehicle outline detection method and system based on laser radar |
| CN112133104A (en) * | 2020-08-21 | 2020-12-25 | 浙江大华技术股份有限公司 | Vehicle information detection method, device and system and storage medium |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 518000 four floor, B District, Pioneer Park, University Town, Xili Li Xian Avenue, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen City Marathon stone laser radar Co. Ltd. Address before: 518000 four floor, B District, Pioneer Park, University Town, Xili Li Xian Avenue, Nanshan District, Shenzhen, Guangdong Patentee before: Shenzhen Fashi Laser Measuring Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |