CN104794905A - Express way vehicle overspeed detection method based on vibration wave Doppler signal - Google Patents

Express way vehicle overspeed detection method based on vibration wave Doppler signal Download PDF

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Publication number
CN104794905A
CN104794905A CN201510165232.7A CN201510165232A CN104794905A CN 104794905 A CN104794905 A CN 104794905A CN 201510165232 A CN201510165232 A CN 201510165232A CN 104794905 A CN104794905 A CN 104794905A
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vibration wave
signal
vehicle
data processor
highway
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CN201510165232.7A
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CN104794905B (en
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王水平
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Xidian University
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Xidian University
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/052Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention relates to an express way vehicle overspeed detection method based on a vibration wave Doppler signal. The express way vehicle overspeed detection method is characterized by including fixing a vibration wave detection unit sensor on a roadbed of an express way, and connecting the vibration wave detection unit sensor with a processing unit electrically; when a vehicle travels on the express way, acquiring a vibration wave signal generated by the road surface through the vibration wave detection unit sensor, providing the vibration wave signal for the processing unit electrically connected with the vibration wave detection unit sensor, filtering and analyzing the vibration wave signal by the processing unit, extracting frequency signals, with the same frequency feature, in a vibration wave, acquiring the vibration wave Doppler signal with the same frequency feature, calculating the driving speed of the vehicle on the express way according to frequency shift of the vibration wave Doppler signal, determining whether overspeed driving exists or not according to the speed, and tracking vibration wave information generated by the vehicle in case of overspeed driving.

Description

A kind of overspeed of vehicle on highway detection method based on vibration wave Doppler
Technical field
The present invention relates to a kind of vibration wave detection technique, particularly a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler.
Background technology
Domestic " law on road traffic safety " specifies, is decided to be 120 at highway Maximum speed limit.Generally mostly be between 100-120 at present, some tunnel, bridge can be limit 80.Some places also have special provision, generally when entering highway, speed limitation board all can be had to remind.Highway is driven over the speed limit to detect vehicle, in some sections, overspeed of vehicle radar is installed, most vehicle all can enter detections of radar district and slow down car speed, reach regulation requirement, but cross this section can drive over the speed limit again, every year because high way super speed travels the accident that causes a lot, all bring the misery that cannot bear to look back on to each side.
Vehicle speed detection adopts following technology usually: inductive coil detecting device or microwave vehicle detecting device or video-based vehicle detection or infrared vehicle detecting device, no matter be which kind of detecting device above-mentioned, general useful area is all limited, be difficult to cause effective supervision to violator, this highway Maximum speed limit namely in " law on road traffic safety " can only specify, is difficult to punishment.State is for cannot detect by effective technology method.
Summary of the invention
The object of this invention is to provide a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler that can detect high way super speed driving vehicle at a distance.
The object of the present invention is achieved like this, and a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler, is characterized in that: at express highway roadbed fixing vibration wave detecting unit sensor, vibration wave detecting unit sensor is electrically connected with processing unit; Vehicle travels when highway, the vibration wave signal produced by road surface, this signal is obtained by vibration wave detecting unit sensor, and be supplied to the processing unit of electrical connection, processing unit is by carrying out filter analysis to vibration wave signal, extract the frequency signal in vibration wave with same frequency feature, and obtain the vibration wave Doppler signal of this same frequency feature, express-road vehicle running speed is calculated according to the frequency displacement of vibration wave Doppler signal, determine whether it is drive over the speed limit according to speed, as hypervelocity then carries out the vibration wave information trace of vehicle generation.
Described processing unit involving vibrations ripple spectral analysis unit and data processor, vibration wave spectral analysis unit is connected with vibration wave detecting unit sensor electrical, vibration wave detecting unit sensor receives the vibration wave signal that highway transmits, data processor is to amplifying and frequency spectrum processing, vibration wave spectral analysis unit is electrically connected with data processor, the vibration wave trace information of same frequency feature is provided to data processor, when the velocity information that the vibration wave trace information of same frequency feature provides have be greater than overspeed of vehicle value time, start the video camera be electrically connected with data processor, carry out by section acquisition over-speed vehicles information of taking pictures at associated vehicle by video camera, the memory simultaneously controlling to be electrically connected with data processor carries out the storage of vibration wave trace information.
Described memory stores the database having the different automobile types of foundation in highway driving friction speed simultaneously, data processor is by contrasting the database information of the highway vibration wave signal detected in real time and storage, to determine over-speed vehicles information further.
Described data processor adopts the core chip of ARM company of Britain as CPU.
Described vibration wave spectral analysis unit comprises small signals amplification testing circuit and filtering circuit, small signals amplification testing circuit is connected with vibration wave detecting unit sensor electrical, receive vibration wave detecting unit sensor vibration ripple signal, by small signals amplification testing circuit, signal is amplified again after filtering circuit process, deliver to data processor.
Described vibration wave spectral analysis unit or existing small signals amplification detecting device and ripple spectrum analyzer are formed, small signals amplification detecting device and ripple spectrum analyzer are electrically connected by USB interface, small signals amplification detecting device is connected with vibration wave detecting unit sensor electrical, receive vibration wave detecting unit sensor vibration ripple signal, after process being amplified to signal by small signals amplification detecting device, deliver to vibration wave spectrum analyzer input end, carrying out spectrum analysis by vibration wave spectrum analyzer, data-signal is being sent into data processor and processes further.
Advantage of the present invention is: because the present invention is by the sensor at express highway roadbed layer internal fixtion vibration wave detecting unit, by detecting the vibration wave signal produced by road surface in express-road vehicle running, signal carries out amplifying and frequency spectrum processing, the vibration wave trace information of same frequency feature is provided to data processor, when the velocity information that the vibration wave trace information of same frequency feature provides have be greater than hypervelocity value time, start video camera being undertaken by section taking pictures and obtain over-speed vehicles information.This method has detecting distance feature far away, locates by technical method determination overspeed of vehicle on highway.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the invention will be further described:
Fig. 1 is example structure schematic diagram;
Fig. 2 is embodiment processing unit circuit theory diagrams;
Fig. 3 is the first embodiment of vibration wave spectral analysis unit;
Fig. 4 is vibration wave spectral analysis unit the second embodiment.
In figure, 1, processing unit; 2, vibration wave detecting unit sensor; 3, small signals amplification testing circuit; 4, data processor; 5, express highway roadbed; 6, video camera; 7, memory; 8, vibration wave spectral analysis unit; 9, vehicle; 10, display; 11, filtering circuit; 12, small signals amplification detecting device; 13, ripple spectrum analyzer; 14, USB interface.
Embodiment
Put example 1 in fact
As shown in Figure 1, a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler, at express highway roadbed 5 fixing vibration wave detecting unit sensors 2, vibration wave detecting unit sensor 2 is electrically connected with processing unit 1, vehicle 9 travels when highway, the vibration wave signal produced by road surface, this signal is obtained by vibration wave detecting unit sensor 2, and be supplied to the processing unit 1 of electrical connection, processing unit 1 is by carrying out filter analysis to vibration wave signal, extract the frequency signal in vibration wave with same frequency feature, and obtain the vibration wave Doppler signal of this same frequency feature, express-road vehicle running speed is calculated according to the frequency displacement of vibration wave Doppler signal, determine whether it is drive over the speed limit according to speed, as hypervelocity then carries out the vibration wave information trace of vehicle generation.
As shown in Figure 2, described processing unit 1 involving vibrations ripple spectral analysis unit 8 and data processor 4, data processor 4 adopts Britain ARM(Advanced RISC Machines) core chip of company is as CPU, vibration wave spectral analysis unit 8 is electrically connected with vibration wave detecting unit sensor 2 and receives vibration wave detecting unit sensor 2 vibration wave signal, the vibration wave that highway transmits (mainly compressional wave) signal is amplified and frequency spectrum processing, vibration wave spectral analysis unit 8 is electrically connected with data processor 4, the vibration wave trace information of same frequency feature is provided to data processor 4, when the velocity information that the vibration wave trace information of same frequency feature provides have be greater than overspeed of vehicle value time, start the video camera 6 be electrically connected with data processor 4, carry out by section acquisition over-speed vehicles information of taking pictures at associated vehicle by video camera 6, the memory 7 simultaneously controlling to be electrically connected with data processor 4 carries out the storage of vibration wave trace information.
Memory 7 stores simultaneously has the different automobile types of foundation at the database of highway driving friction speed, data processor 4 is by contrasting the database information of the highway vibration wave signal detected in real time and storage, to determine over-speed vehicles information further.
As shown in Figure 3, vibration wave spectral analysis unit 8 comprises small signals amplification testing circuit 3 and filtering circuit 11, small signals amplification testing circuit is electrically connected with vibration wave detecting unit sensor 2, receive vibration wave detecting unit sensor 2 vibration wave signal, by small signals amplification testing circuit, signal is amplified again after filtering circuit process, deliver to data processor 4.
As shown in Figure 4, vibration wave spectral analysis unit 8 or existing small signals amplification detecting device 12 and ripple spectrum analyzer 13 are formed, small signals amplification detecting device and ripple spectrum analyzer are electrically connected by usb 14, small signals amplification detecting device is electrically connected with vibration wave detecting unit sensor 2, receive vibration wave detecting unit sensor 2 vibration wave signal, after process being amplified to signal by small signals amplification detecting device, deliver to vibration wave spectrum analyzer input end, spectrum analysis is being carried out by vibration wave spectrum analyzer, data-signal is sent into data processor 4 to process further.
The parts that the present embodiment does not describe in detail and structure and circuit belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.

Claims (6)

1. based on a vibration wave Doppler's overspeed of vehicle on highway detection method, it is characterized in that: at express highway roadbed fixing vibration wave detecting unit sensor, vibration wave detecting unit sensor is electrically connected with processing unit; Vehicle travels when highway, the vibration wave signal produced by road surface, this signal is obtained by vibration wave detecting unit sensor, and be supplied to the processing unit of electrical connection, processing unit is by carrying out filter analysis to vibration wave signal, extract the frequency signal in vibration wave with same frequency feature, and obtain the vibration wave Doppler signal of this same frequency feature, express-road vehicle running speed is calculated according to the frequency displacement of vibration wave Doppler signal, determine whether it is drive over the speed limit according to speed, as hypervelocity then carries out the vibration wave information trace of vehicle generation.
2. a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler according to claim 1, it is characterized in that: described processing unit involving vibrations ripple spectral analysis unit and data processor, vibration wave spectral analysis unit is connected with vibration wave detecting unit sensor electrical, vibration wave detecting unit sensor receives the vibration wave signal that highway transmits, data processor is to amplifying and frequency spectrum processing, vibration wave spectral analysis unit is electrically connected with data processor, the vibration wave trace information of same frequency feature is provided to data processor, when the velocity information that the vibration wave trace information of same frequency feature provides have be greater than overspeed of vehicle value time, start the video camera be electrically connected with data processor, carry out by section acquisition over-speed vehicles information of taking pictures at associated vehicle by video camera, the memory simultaneously controlling to be electrically connected with data processor carries out the storage of vibration wave trace information.
3. a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler according to claim 2, it is characterized in that: described memory stores the database having the different automobile types of foundation in highway driving friction speed simultaneously, data processor is by contrasting the database information of the highway vibration wave signal detected in real time and storage, to determine over-speed vehicles information further.
4. a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler according to claim 2, is characterized in that: described data processor adopts the core chip of ARM company of Britain as CPU.
5. a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler according to claim 2, it is characterized in that: described vibration wave spectral analysis unit comprises small signals amplification testing circuit and filtering circuit, small signals amplification testing circuit is connected with vibration wave detecting unit sensor electrical, receive vibration wave detecting unit sensor vibration ripple signal, by small signals amplification testing circuit, signal is amplified again after filtering circuit process, deliver to data processor.
6. a kind of overspeed of vehicle on highway detection method based on vibration wave Doppler according to claim 2, it is characterized in that: described vibration wave spectral analysis unit or existing small signals amplification detecting device and ripple spectrum analyzer are formed, small signals amplification detecting device and ripple spectrum analyzer are electrically connected by USB interface, small signals amplification detecting device is connected with vibration wave detecting unit sensor electrical, receive vibration wave detecting unit sensor vibration ripple signal, after process being amplified to signal by small signals amplification detecting device, deliver to vibration wave spectrum analyzer input end, spectrum analysis is being carried out by vibration wave spectrum analyzer, data-signal is sent into data processor process further.
CN201510165232.7A 2015-04-09 2015-04-09 A kind of overspeed of vehicle on highway detection method based on vibration wave Doppler Expired - Fee Related CN104794905B (en)

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