CN103456178A - Road vehicle speed measuring system - Google Patents
Road vehicle speed measuring system Download PDFInfo
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- CN103456178A CN103456178A CN201310396544XA CN201310396544A CN103456178A CN 103456178 A CN103456178 A CN 103456178A CN 201310396544X A CN201310396544X A CN 201310396544XA CN 201310396544 A CN201310396544 A CN 201310396544A CN 103456178 A CN103456178 A CN 103456178A
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Abstract
The invention belongs to the field of collection of traffic vehicle information, and particularly relates to a speed measuring system. According to the technical scheme, the road vehicle speed measuring system comprises terrestrial magnetism type vehicle detectors, a wireless receiving module, a central processing unit and a high definition camera. The central processing unit computes the speed of a vehicle according to the time interval for the vehicle to pass through the terrestrial magnetism type vehicle detectors and the installation distance between the two vehicle detectors, and when the vehicle is detected to be overspeed, the central processing unit triggers the high definition camera to shoot a picture through a contact signal and receives snapshot picture information transmitted by the high definition camera through a network interface. The road vehicle speed measuring system is easy to install, accurate in detection and capable of replacing existing road vehicle speed measuring systems.
Description
Technical field
The invention belongs to vehicular traffic information acquisition field, be specifically related to a kind of velocity-measuring system.
Background technology
Current road vehicle velocity-measuring system mainly contains radar velocity measurement and ground induction coil triggers two classes that test the speed.
Radar velocity measurement is mainly to utilize Doppler effect (Doppler Effect) principle, and when target is close to radar antenna, the reflected signal frequency will be higher than transmitter frequency; Otherwise, when target is gone away from antenna, the reflected signal frequency will be lower than transmitter frequency.So, by the change numerical value of frequency, calculate the relative velocity of target and radar.The radar velocity measurement device can only be installed a check point on same direction of traffic, and on same direction, a plurality of Vehicle Driving Cycles or front and back vehicle are followed while travelling side by side, and the radar velocity measurement device can't be differentiated a plurality of vehicles, phenomenon undetected and that false retrieval is surveyed easily occurs.
Ground induction coil triggers and tests the speed, and the ground induction coil of two fixed ranges generally is installed on the test track, according to vehicle, by the mistiming of two coils and the distance of two coils, calculates the travel speed of vehicle.Ground induction coil need to cut, bury underground inductive coil on track.At the embedded underground inductive coil, strengthen difficulty of construction due to needs, improved installation cost.Simultaneously coil is easy to damage under cart weight, increases maintenance cost (usually all needing to be overhauled every year), thus ground induction coil to trigger the reliability that tests the speed in the engineering application not high.
In sum, no matter be that radar velocity measurement or ground induction coil triggering are tested the speed at present, in practical implementation, all come with some shortcomings.
Summary of the invention
The objective of the invention is: propose a kind of road test system that is directed to traveling vehicle, by detecting the vehicle disturbance in magnetic field over the ground, thereby judge the problem whether vehicle exceeds the speed limit in traveling process;
Technical scheme of the present invention is: a kind of road vehicle velocity-measuring system, and it comprises: geomagnetic type vehicle detecting device, wireless receiving module, CPU (central processing unit) and high-definition camera;
The geomagnetic type vehicle detecting device comprises: for detection of vehicle whether process the geomagnetism detecting sensor, by vehicle through the wireless communication module of signal unofficial biography and the supply module that electric power is provided to geomagnetism detecting sensor, wireless communication module; The quantity of geomagnetic type vehicle detecting device has two, and fixed range is arranged along the track center line;
Wireless receiving module receives the vehicle process signal from wireless communication module by wireless network, and is sent to CPU (central processing unit) through serial line interface;
CPU (central processing unit) comprises: CPU, serial line interface, contact signal interface and network interface; Wherein, the speed of the normal vehicle operation that prestores in CPU, when serial line interface receives vehicle after signal, CPU calculates the speed of a motor vehicle of vehicle through mistiming of signals according to the fixed range of two geomagnetic type vehicle detecting devices and two vehicles; When the speed of the car speed calculated over the normal vehicle operation prestored, CPU starts high-definition camera by the contact signal interface;
High-definition camera is for capturing the vehicle of hypervelocity, and return pictorial information that candid photograph arrives to CPU by network interface.
The invention has the beneficial effects as follows: 1. the present invention adopts geomagnetic type vehicle to detect information of vehicles, and the geomagnetic type vehicle detecting device adopts waterproofing design, and volume is little, and in work progress, without large tracts of land cutting road surface, the damage of road pavement is less.Easy construction, reduce installation cost.
2. on-the-spot collecting vehicle information, by the wireless mode data transmission, without field wiring, is installed succinct.
3. the present invention's Detection accuracy that tests the speed is high, and environmental suitability is stronger.
The accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is that geomagnetic type vehicle detecting device of the present invention forms block diagram;
Fig. 3 is CPU (central processing unit) composition frame chart of the present invention;
Embodiment
Referring to accompanying drawing 1, a kind of road vehicle velocity-measuring system, it comprises: geomagnetic type vehicle detecting device, wireless receiving module, CPU (central processing unit) and high-definition camera;
Referring to accompanying drawing 2, the geomagnetic type vehicle detecting device comprises: for detection of vehicle whether process the geomagnetism detecting sensor, by vehicle through the wireless communication module of signal unofficial biography and the supply module that electric power is provided to geomagnetism detecting sensor, wireless communication module; Because the magnetic field of the earth is that constant, large-scale ferromagnetic object can produce disturbance to magnetic field of the earth basically within several kilometers.General vehicle all contains iron structure, belongs to large-scale ferromagnetic object, when vehicle by the time can reach the part of absolute force to geomagnetic disturbance.Therefore the geomagnetism detecting sensor can be told the variation in magnetic field of the earth 1/6000, adopts the geomagnetism detecting sensor can detect accurately the vehicle disturbance in magnetic field over the ground, thus judged whether automobile storage or pass through; The quantity of geomagnetic type vehicle detecting device has two, and fixed range is arranged along the track center line; For example, magnetic-type wagon detector A, geomagnetic type vehicle detecting device B are arranged on the central authorities in detected track, and both distances are 3m～10m, and mounting means is buried installation, by hole making drill, installs, and opening diameter is no more than 100mm, and the degree of depth is no more than 120mm; When vehicle being arranged through out-of-date, the geomagnetism detecting sensor is transferred to wireless communication module by the vehicle detected through signal, and wireless communication module sends the vehicle received through signal;
Wireless receiving module receives the vehicle process signal from wireless communication module by wireless network, and is sent to CPU (central processing unit) through serial line interface;
Referring to accompanying drawing 3, CPU (central processing unit) comprises: CPU, serial line interface, contact signal interface and network interface; Wherein, the speed of the normal vehicle operation that prestores in CPU, when serial line interface receives vehicle after signal, CPU calculates the speed of a motor vehicle of vehicle through mistiming of signals according to the fixed range of two geomagnetic type vehicle detecting devices and two vehicles; When the speed of the car speed calculated over the normal vehicle operation prestored, CPU starts high-definition camera by the contact signal interface;
High-definition camera is for capturing the vehicle of hypervelocity, and return pictorial information that candid photograph arrives to CPU by network interface.
Preferably, for the ease of collecting and process violation information, CPU can be set and by network interface, the pictorial information of passback be sent to remote control center, the staff of remote control center will process violation information in time.
Claims (2)
1. a road vehicle velocity-measuring system, is characterized in that, it comprises: geomagnetic type vehicle detecting device, wireless receiving module, CPU (central processing unit) and high-definition camera;
Described geomagnetic type vehicle detecting device comprises: for detection of vehicle whether process the geomagnetism detecting sensor, by vehicle through the wireless communication module of signal unofficial biography and the supply module that electric power is provided to described geomagnetism detecting sensor, described wireless communication module; The quantity of described geomagnetic type vehicle detecting device has two, and fixed range is arranged along the track center line;
Described wireless receiving module receives the vehicle process signal from described wireless communication module by wireless network, and is sent to described CPU (central processing unit) through serial line interface;
Described CPU (central processing unit) comprises: CPU, serial line interface, contact signal interface and network interface; Wherein, the speed of the normal vehicle operation that prestores in described CPU, when serial line interface receives vehicle after signal, described CPU calculates the speed of a motor vehicle of vehicle through mistiming of signals according to the fixed range of two described geomagnetic type vehicle detecting devices and two vehicles; When the speed of the car speed calculated over the normal vehicle operation prestored, described CPU starts described high-definition camera by described contact signal interface;
Described high-definition camera is for capturing the vehicle of hypervelocity, and return and capture extremely described CPU of the pictorial information that arrives by network interface.
2. a kind of road vehicle velocity-measuring system as claimed in claim 1, is characterized in that, described CPU is sent to remote control center by described network interface by the pictorial information of passback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310396544XA CN103456178A (en) | 2013-09-03 | 2013-09-03 | Road vehicle speed measuring system |
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| CN201310396544XA CN103456178A (en) | 2013-09-03 | 2013-09-03 | Road vehicle speed measuring system |
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| CN103456178A true CN103456178A (en) | 2013-12-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735116A (en) * | 2013-12-24 | 2015-06-24 | 中国移动通信集团公司 | Monitoring data obtaining method, device and system |
| CN105469607A (en) * | 2015-12-28 | 2016-04-06 | 迈锐数据（北京）有限公司 | Geomagnetic vehicle detector and installation method for same |
| CN106355897A (en) * | 2016-10-20 | 2017-01-25 | 无锡华赛伟业传感信息科技有限公司 | Speed measuring method of geomagnetic vehicle detector |
| CN106781533A (en) * | 2016-12-29 | 2017-05-31 | 紫光捷通科技股份有限公司 | A kind of traffic intelligent detecting system for intersection |
| CN107978159A (en) * | 2016-10-25 | 2018-05-01 | 华东交通大学 | Vehicle on highway velocity-measuring system |
| CN109118788A (en) * | 2018-10-21 | 2019-01-01 | 河南汇纳科技有限公司 | A kind of high speed violation prompt system |
| CN109191863A (en) * | 2018-10-25 | 2019-01-11 | 广州宏亮信息技术有限公司 | The comprehensive administrative non-at-scene enforcement system of traffic |
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| CN101226690A (en) * | 2007-01-16 | 2008-07-23 | 同济大学 | Wireless geomagnetism type vehicle detecting system |
| CN101236697A (en) * | 2007-08-08 | 2008-08-06 | 中科院嘉兴中心微系统所分中心 | Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information |
| WO2010043252A1 (en) * | 2008-10-15 | 2010-04-22 | Siemens Ag Österreich | Method and system for determining a vehicle speed |
| CN101770692A (en) * | 2010-01-19 | 2010-07-07 | 中国计量学院 | Far infrared light-supplemented system for snapping violated vehicles on road |
| CN203480691U (en) * | 2013-09-03 | 2014-03-12 | 中国船舶重工集团公司第七一〇研究所 | Velocity measuring system for road vehicles |
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| CN101226690A (en) * | 2007-01-16 | 2008-07-23 | 同济大学 | Wireless geomagnetism type vehicle detecting system |
| CN101236697A (en) * | 2007-08-08 | 2008-08-06 | 中科院嘉兴中心微系统所分中心 | Wireless sensor network system and detection method utilizing huge magneto-resistance magnetic-sensing technology for detecting vehicle information |
| WO2010043252A1 (en) * | 2008-10-15 | 2010-04-22 | Siemens Ag Österreich | Method and system for determining a vehicle speed |
| CN101770692A (en) * | 2010-01-19 | 2010-07-07 | 中国计量学院 | Far infrared light-supplemented system for snapping violated vehicles on road |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735116A (en) * | 2013-12-24 | 2015-06-24 | 中国移动通信集团公司 | Monitoring data obtaining method, device and system |
| CN104735116B (en) * | 2013-12-24 | 2018-12-28 | 中国移动通信集团公司 | A kind of monitoring data acquisition methods, equipment and system |
| CN105469607A (en) * | 2015-12-28 | 2016-04-06 | 迈锐数据（北京）有限公司 | Geomagnetic vehicle detector and installation method for same |
| CN106355897A (en) * | 2016-10-20 | 2017-01-25 | 无锡华赛伟业传感信息科技有限公司 | Speed measuring method of geomagnetic vehicle detector |
| CN107978159A (en) * | 2016-10-25 | 2018-05-01 | 华东交通大学 | Vehicle on highway velocity-measuring system |
| CN106781533A (en) * | 2016-12-29 | 2017-05-31 | 紫光捷通科技股份有限公司 | A kind of traffic intelligent detecting system for intersection |
| CN109118788A (en) * | 2018-10-21 | 2019-01-01 | 河南汇纳科技有限公司 | A kind of high speed violation prompt system |
| CN109191863A (en) * | 2018-10-25 | 2019-01-11 | 广州宏亮信息技术有限公司 | The comprehensive administrative non-at-scene enforcement system of traffic |
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Application publication date: 20131218 |