CN102339531A - Road traffic detection system - Google Patents
Road traffic detection system Download PDFInfo
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- CN102339531A CN102339531A CN201010228383XA CN201010228383A CN102339531A CN 102339531 A CN102339531 A CN 102339531A CN 201010228383X A CN201010228383X A CN 201010228383XA CN 201010228383 A CN201010228383 A CN 201010228383A CN 102339531 A CN102339531 A CN 102339531A
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Abstract
A road traffic detection system comprises one or more of an RFID reader-writer, a photosensitive sensor, a laser detector, a camera, a weight sensor, an inductance coil, an infrared light curtain, a sound sensor and a temperature sensor. A traffic detection front system is formed by an RFID label which is named as an Eplate and is installed on a vehicle and the above element in the road traffic detection system. Compared to a traditional video analysis traffic information acquisition method, by using the system of the invention, data is accurate; information contents are large; a related information collection ability is strong and a certain intelligent processing and reaction ability is possessed.
Description
[technical field]
The present invention relates to the radio sensing network field, relate in particular to a kind of roadside traffic detection system of multisensor.
[background technology]
Traffic information collection equipment is a kind of equipment that the vehicle of transportation network is monitored of being used for; Basically be main with camera; Through taking the situation of movement of vehicle in the monitoring and controlling traffic network; Send the managerial personnel of Surveillance center to, managerial personnel judge and dredge through watching situation about photographing to come the jam situation of urban transportation made.
Existing traffic information collection equipment is many to be main with camera; Function ratio is more single; And do not have construction system, can't be accurately to the transport information collection of networking, can only carry out rough analysis to urban pavement traffic video recording at present and estimate with the statistics magnitude of traffic flow; Highway can carry out the collection of the magnitude of traffic flow through Fare Collection System, but can't satisfy the demand that other information relevant with traffic are gathered.
[summary of the invention]
Technical matters to be solved by this invention is; A kind of sensor traffic information acquisition system is provided; The RFID technical application in traffic information collection, and is combined the multiple sensors module, to reach the purpose of the accurate collection various information relevant with traffic; For the intelligent gather data of traffic administration, information is provided.And has Intelligent treatment reaction capacity to a certain degree.
In order to address the above problem; The invention provides a kind of roadside traffic detection system; It is characterized in that, comprise one or more in rfid interrogator, light sensor, laser detector, camera, weight sensor, telefault, infrared light curtain, sound transducer and the temperature sensor, with the RFID label of installing on the vehicle; Or the title electronic license plate, form the traffic detection front end system together.
The invention has the advantages that analyze the traffic information collection method with traditional video recording and compare, data are accurate, contain much information, it is strong that relevant information is collected ability, and have certain Intelligent treatment reaction capacity.
[description of drawings]
Accompanying drawing 1 is the structural representation of the said system of embodiment of the present invention.
[embodiment]
Elaborate below in conjunction with the embodiment of accompanying drawing to a kind of multisensor traffic information acquisition system provided by the invention.
Be the structural representation of the said system of this embodiment shown in the accompanying drawing 1, comprise RFID label, aerial array, a plurality of rfid interrogator, a plurality of sensor assemblies and main control equipment.
Continuation is with reference to accompanying drawing 1, and the RFID label is arranged on the vehicle 1, can be designed to the form of electronic license plate 11 or electronic window subsides 12.Electronic license plate adopts the RFID technology, and former motor vehicles licence plate is replaced by the electronic license plate that contains the RFID technology, and internal storage has the relevant information of these motor vehicles.Window labels the electronic tag that RFID adopts the RFID technology, sticks on the motor vehicles front window, and internal storage has the relevant information of this vehicle.
Continuation is with reference to accompanying drawing 1, and rfid interrogator 2 is arranged on the both sides of road network, includes aerial array.Adopt the high-speed RFID read write line can read and write the equipment of its internal information simultaneously accurately to a plurality of RFID fixing or high-speed mobile.
Continuation is with reference to accompanying drawing 1, and said sensor assembly comprises one or more in ground induction coil 31 (including weight sensor), infrared light curtain 32, infrared ray sensor 33, Temperature Humidity Sensor 34, light sensor 35, sound transducer 36, camera 37, flashlamp and control module (being included in the camera 37), radar meter 38 and the laser detector.Above-mentioned a plurality of sensing can not used simultaneously.Simultaneously, above-mentioned detector is the side dress except being to hang on the lamp stand or on the portal frame, also having a kind of possibly be exactly on the roadside.
Main control equipment needn't be arranged on the roadside, and is arranged on vehicle supervision department's appointed positions, so not shown in Fig. 1.Main control equipment includes the main control board of MCU, USB interface, RS232 serial ports, RS485 serial ports, bluetooth, 3G, communication interfaces such as Ethernet etc.Have the universal I interface, can with other device talks, can upload and data download, can remote upgrade.Have POE, COBBAIF, functions such as PSAM card reader can connect external display device and control displaying contents.Can obtain the information in the vehicle RFID label, car speed, noise level, temperature, humidity, various information such as light intensity according to various sensor feedback.Can judge whether vehicle gets into the appointed area, calculating vehicle quantity is calculated the magnitude of traffic flow, judges ambient conditions, and according to pre-set programs, the Autonomous Control traffic lights perhaps send SMS issuing traffic situation through the display screen prompting.
Adopt the described scheme of this embodiment, electronic license plate or window are installed on the motor vehicles label formula RFID, the relevant information of vehicle is arranged in the label, can write by rfid interrogator.Node at road is installed this equipment with the position that needs Information Monitoring.Judge and RFID combines through multiple sensors such as ground induction coil and infrared light curtain and image, vehicle is surveyed, and the collection vehicle relevant information, and car speed, information such as site of road.While statistic flow information.Through temperature humidity and light intensity and sensor noise, can gather the environmental information relevant with traffic.Through the collection to environmental information, corresponding corresponding weather conditions model is judged current traffic meteorological condition; And the situation of needs promptings handled, through Ethernet, 3G; SMS, and display screen issue relevant information, perhaps control is uploaded traffic information data to database
Specifically, the RFID label of installing on the vehicle carries out the RFID sensitivity test through the standard reading device when mounted when the RFID label is adorned onboard, and vehicle detection sensor such as telefault detect the vehicle commander, and deposit test structure in electronic tag.
The RFID label of installing on the vehicle also deposits vehicle producer, model and year built information in.
This roadside detection system is judged through the time of the RFID label on the vehicle being discerned and passed in and out the read-write scope and is judged that from vehicle tag sensitivity information and vehicle information that label reads thereby the movable length of label in the read-write scope calculates the speed of vehicle.
Because the communication of rfid interrogator and RFID label is influenced by environment and tag feature; Its read-write range size is different; Thereby possibly cause sequencing with actual inconsistent; Therefore, this detection system cooperates other sensors to survey the sequencing that can judge the label entering through tag sensitivity is calculated.
The camera of detection system carries out the vehicle identification computing to the vehicle that passes through, and matches through the order of queuing corresponding mode and rfid interrogator identification, to detect the vehicle position of no RFID label.
The telefault of detection system or infrared light curtain sensor are through the detection that has or not to the process vehicle; Detection vehicle is overlaid on the coil or blocks the existence that the infrared light curtain sets vehicle; Order through the identification of queuing corresponding mode and rfid interrogator is matched, the position that belongs to the vehicle that detects no RFID label.
The camera of detection system carries out the identification of vehicle frontier probe or vehicle special sign to the vehicle that passes through; Said characteristic sign comprises car plate, vehicle window or the artificial special reflecting sign that is printed on some position of vehicle of specifying; Through to the variation of these characteristic tag distance in the multiple image and the time of each frame; Vehicle is carried out speed calculation; And compare with this speed and the speed that calculates through RFID tag recognition entrained with it or that adjacent vehicle is entrained, if two speed obviously differ bigger, then key diagram is wrong as vehicle identification; When vehicle being carried out order identification and survey, will carry out automatic adjustment or correct system through manual work.
The telefault of detection system or infrared light curtain are surveyed the vehicle that passes through; Cover and block the time and the vehicle commander calculates car speed through calculating vehicle; Vehicle information or telefault through reading tag are surveyed the vehicle commander; And compare with this speed and the speed that calculates through RFID tag recognition entrained with it or that adjacent vehicle is entrained, if two speed differ bigger, explain that then coil or infrared light curtain survey wrong; When vehicle being carried out order identification and survey, will carry out automatic adjustment or correct system through manual work.
Vehicle count calculates flow to this detection system in the unit interval through the vehicle that passes through is carried out.
This detection system is through discerning carry out the RFID recognition image through vehicle, and ground induction coil is surveyed and speed calculation is carried out in the detection of infrared light curtain, thereby draws average velocity.
This detection system uses RFID to discern, and through confirming to cooperate Flame Image Process or ground induction coil and infrared light curtain that vehicle location and speed are confirmed to tag readable degree sensitivity identification positioning and speed, surveys solid line and rides line violation and overspeed violation.
This detection system uses RFID identification to draw its vehicle and limit for tonnage amount information, through corresponding weight sensor and/or through camera vehicle is carried out volume calculation, judges whether it overloads.
This detection system is used RFID identification, through tag readable degree sensitivity identification positioning and speed being confirmed to cooperate Flame Image Process or ground induction coil and infrared light curtain vehicle location and speed is confirmed under the detection red light situation, and vehicle makes a dash across the red light and takes pictures and stays evidence.Evidence photograph can show photo opporunity, place and coordinate and directional information.
This detection system is used the situation of the detection of noise being judged the vehicle acceleration and deceleration.
This detection system draws the speed of a motor vehicle, the wagon flow of sensing point through multifactor detection and analysis, through parameters such as vehicle acceleration and deceleration situation and vehicle densities, and be kept in this detection system or on pass central server back.
This traffic detection system uploads after be connected, central server can be searched for traffic parameter that detection system is deposited with central server also can be with all data upload.
This traffic detection system also is provided with automatically through central server or through central server the parameter of surveying is not sent to relevant or contiguous detector; Or reception traffic detection parameter relevant and that contiguous detector sends; Thereby calculate the parameters such as average discharge, speed, traffic density in highway section or path, and be recorded in this detector or central server is given in passback.
This traffic detection system has the function of control traffic lights, comes traffic lights are controlled through local transit parameter and the highway section parameter that calculates and the steering logic of carrying out appointment and algorithm, or directly accepts the instruction control traffic lights of central server.
This traffic detection system has the function of control electronics display board, through local transit parameter and the highway section parameter that calculates and the steering logic of carrying out appointment and algorithm electronics display board display message is informed and regulates the speed of a motor vehicle and dredge wagon flow.
The above only is a 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 principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (22)
1. roadside traffic detection system; It is characterized in that; Comprise one or more in rfid interrogator, light sensor, laser detector, camera, weight sensor, telefault, infrared light curtain, sound transducer and the temperature sensor; With the RFID label of installing on the vehicle, or claim electronic license plate, form the traffic detection front end system together.
2. system according to claim 1; It is characterized in that the RFID label of installing on the vehicle carries out the RFID sensitivity test through the standard reading device when mounted when the RFID label is adorned onboard; Vehicle detection sensor detects the vehicle commander, and deposits test structure in electronic tag.
3. system according to claim 2 is characterized in that said vehicle detection sensor is a telefault.
4. system according to claim 1 is characterized in that, the RFID label of installing on the vehicle also deposits vehicle producer, model and year built information in.
5. system according to claim 1; It is characterized in that, thereby this roadside detection system is judged through the time of the RFID label on the vehicle being discerned and passed in and out the read-write scope and is judged that from vehicle tag sensitivity information and vehicle information that label reads the movable length of label in the read-write scope calculates the speed of vehicle.
6. system according to claim 1; It is characterized in that; Because the communication of rfid interrogator and RFID label is influenced by environment and tag feature, its read-write range size is different, thereby possibly cause sequencing with actual inconsistent; Therefore, this detection system cooperates sensor to survey the sequencing that can judge the label entering through tag sensitivity is calculated.
7. system according to claim 1; It is characterized in that; The camera of detection system carries out the vehicle identification computing to the vehicle that passes through, and matches through the order of queuing corresponding mode and rfid interrogator identification, to detect the vehicle position of no RFID label.
8. system according to claim 1; It is characterized in that; The telefault of detection system or infrared light curtain sensor are through the wrong detection to the process vehicle; Detection vehicle is overlaid on the coil or blocks the existence that the infrared light curtain is discerned vehicle, matches the position that belongs to the vehicle that detects no RFID label through the order of queuing corresponding mode and rfid interrogator identification.
9. system according to claim 1; It is characterized in that; The camera of detection system carries out the identification of vehicle frontier probe or vehicle special sign to the vehicle that passes through, and said characteristic sign comprises car plate, vehicle window or the artificial special reflecting sign that is printed on some position of vehicle of specifying, through to the variation of these characteristic tag distance in the multiple image and the time of each frame; Vehicle is carried out speed calculation; And compare with this speed and the speed that calculates through RFID tag recognition entrained with it or that adjacent vehicle is entrained, if two speed obviously differ bigger, then key diagram is wrong as vehicle identification; When vehicle being carried out order identification and survey, will carry out automatic adjustment or correct system through manual work.
10. system according to claim 1; It is characterized in that the telefault of detection system or infrared light curtain are surveyed the vehicle that passes through, cover and block the time and the vehicle commander calculates car speed through calculating vehicle; Vehicle information or telefault through reading tag are surveyed the vehicle commander; And compare with this speed and the speed that calculates through RFID tag recognition entrained with it or that adjacent vehicle is entrained, if two speed differ bigger, explain that then coil or infrared light curtain survey wrong; When vehicle being carried out order identification and survey, will carry out automatic adjustment or correct system through manual work.
11. system according to claim 1 is characterized in that, vehicle count calculates flow to this detection system in the unit interval through the vehicle that passes through is carried out.
12. system according to claim 1 is characterized in that, this detection system is through discerning carry out the RFID recognition image through vehicle, and ground induction coil is surveyed and speed calculation is carried out in the detection of infrared light curtain, thereby draws average velocity.
13. system according to claim 1; It is characterized in that; This detection system is used RFID identification; Through confirming to cooperate Flame Image Process or ground induction coil and infrared light curtain that vehicle location and speed are confirmed, survey solid line and ride line violation and overspeed violation tag readable degree sensitivity identification positioning and speed.
14. system according to claim 1 is characterized in that, this detection system uses RFID identification to draw its vehicle and limit for tonnage amount information, through corresponding weight sensor and/or through camera vehicle is carried out volume calculation, judges whether it overloads.
15. system according to claim 1; It is characterized in that; This detection system is used RFID identification; Through tag readable degree sensitivity identification positioning and speed being confirmed to cooperate Flame Image Process or ground induction coil and infrared light curtain vehicle location and speed are confirmed to survey under the red light situation, vehicle makes a dash across the red light and takes pictures and stays evidence.
16. system according to claim 15 is characterized in that, evidence photograph can show photo opporunity, place and coordinate and directional information.
17. system according to claim 1 is characterized in that, this detection system is used the situation of the detection of noise being judged the vehicle acceleration and deceleration.
18. system according to claim 1; It is characterized in that; This detection system draws the speed of a motor vehicle, the wagon flow of sensing point through multifactor detection and analysis, through parameters such as vehicle acceleration and deceleration situation and vehicle densities, and be kept in this detection system or on pass central server back.
19. system according to claim 1 is characterized in that, this traffic detection system uploads after be connected, central server can be searched for traffic parameter that detection system is deposited with central server also can be with all data upload.
20. system according to claim 1; It is characterized in that; This traffic detection system also is provided with automatically through central server or through central server the parameter of surveying is not sent to relevant or contiguous detector; Or receive traffic detection parameter relevant and that contiguous detector sends, thus calculate the parameters such as average discharge, speed, traffic density in highway section or path, and be recorded in this detector or central server is given in passback.
21. system according to claim 1; It is characterized in that; This traffic detection system has the function of control traffic lights; Come traffic lights are controlled through local transit parameter and the highway section parameter that calculates and the steering logic of carrying out appointment and algorithm, or directly accept the instruction control traffic lights of central server.
22. system according to claim 1; It is characterized in that; This traffic detection system has the function of control electronics display board, through local transit parameter and the highway section parameter that calculates and the steering logic of carrying out appointment and algorithm electronics display board display message is informed and regulates the speed of a motor vehicle and dredge wagon flow.
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| CN201010228383.XA CN102339531B (en) | 2010-07-14 | 2010-07-14 | Road traffic detection system |
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| CN201010228383.XA CN102339531B (en) | 2010-07-14 | 2010-07-14 | Road traffic detection system |
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