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Vehicle detecting device based on multi-kind sensor information

A signal detection and vehicle technology, applied in the field of traffic detection, can solve the problems of low detection accuracy and being easily affected by the environment, and achieve the effect of improving detection accuracy

Active Publication Date: 2014-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle detection device based on a variety of sensor information to overcome the problems of low detection accuracy and susceptibility to environmental influences in the existing vehicle detection technology

Method used

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  • Vehicle detecting device based on multi-kind sensor information

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Embodiment 1

[0012] A vehicle detection device based on various sensor information, comprising an acceleration detection unit 1, a photosensitive signal detection unit 2, a geomagnetic detection unit 3, a data acquisition unit 4, a microprocessor 5, a wireless transmission module 6 and a storage unit 7; acceleration detection The unit, the photosensitive signal detection unit and the geomagnetism detection unit are installed on the road surface, the acceleration detection unit, the photosensitive signal detection unit, and the geomagnetism detection unit are respectively connected to the data acquisition unit by electrical signals, the data acquisition unit is connected to the microprocessor by electrical signals, the storage unit, The wireless transmitting module is respectively connected with the electrical signal of the microprocessor, and the acceleration detection unit, the photosensitive signal detection unit, and the geomagnetism detection unit respectively output the road surface vib...

Embodiment 2

[0020] Acceleration detection unit 1 adopts the SCA3100 three-axis acceleration sensor of Finland VTI Technology Company, which is used to sense the road vibration caused by the contact between the axle and the road surface through the wheels, and convert the shock wave signal into a digital acceleration signal. The photosensitive signal detection unit 2 is a photoresistor, and its function is to sense the light signal change caused by the vehicle passing through the shielded light source, and convert the light signal change into an electrical signal. The geomagnetic detection unit 3 adopts the BMM150 geomagnetic detector of Bosch Company, and its function is to sense the magnetic field change caused by the vehicle passing by, and output a corresponding electric signal. The data acquisition unit 4 performs analog-to-digital conversion on the three signals, and transmits the obtained digital signal to the microprocessor 5 . Microprocessor 5 adopts MCS-51 single-chip microcomput...

Embodiment 3

[0022] Acceleration detection unit 1 adopts the ADXL345 acceleration sensor of Analog Devices, whose function is to sense the road vibration caused by the contact between the axle and the road surface through the wheels, and convert the shock wave signal into a digital acceleration signal. The photosensitive signal detection unit 2 is a photodiode, and its function is to sense the light signal change caused by the vehicle passing through the shielded light source, and convert the light signal change into an electrical signal. The geomagnetic detection unit 3 adopts the MMLP57H geomagnetic sensor of the German MDT company, and its function is to sense the magnetic field change caused by the vehicle passing by, and output a corresponding electric signal. The data acquisition unit 4 performs analog-to-digital conversion on the three signals, and transmits the obtained digital signal to the microprocessor 5 . Microprocessor 5 adopts the CC2540 microprocessor core of Texas Instrume...

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Abstract

The invention discloses a vehicle detecting device based on multi-kind sensor information. The vehicle detecting device based on the multi-kind sensor information comprises an acceleration detecting unit, a photosensitive signal detecting unit, a geomagnetism detecting unit, a data collection unit, a microprocessor, a storage unit and a wireless transmitting module. When a vehicle passes the detecting device, the acceleration detecting unit collects a road surface shock signal, a photosensitive element induces the illumination variations and generates a photosensitive signal, and the geomagnetism detecting unit induces the changing of the magnetic field and outputs a corresponding electrical signal; analysis and computing are conducted on the signal data by a microcontroller, and relevant parameter information of the vehicle is acquired, transferred to the storage unit, and is sent to a receiving terminal through the wireless transmitting module. The vehicle detecting device based on the multi-kind sensor information has the advantages that vehicle information is detected through the theory of fusing the multi-sensor information, so that detecting accuracy can be improved effectively without being affected by weather factors and sizes of vehicles, installing and maintenance are easy, size is small, cost is low and power consumption is low.

Description

technical field [0001] The invention relates to traffic detection technology, in particular to a vehicle detection device based on various sensor information. Background technique [0002] With the rapid development of intelligent transportation technology, traffic information collection technology, especially vehicle detection technology has become particularly important. When the vehicle is running on the road, it will release heat, sound, magnetic and other signals. Traffic detector detects these signals and uses one or several kinds of information to detect moving vehicles. According to the types of detection sensors used in traffic detectors, they can be divided into pressure, acceleration, magnetic field, inductance, ultrasonic, frequency, photoelectric, image sensing, etc. They detect the time, size or image of a vehicle passing through a certain interface by sensing, converting and transmitting relevant physical quantities, and transmit it to the processing unit. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/04G08G1/042G08G1/065
Inventor 刘昕王华杨亚鹏
Owner HARBIN INST OF TECH
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