Vector model-based detection system and method for single geomagnetic vehicle traffic parameters

A traffic parameter and detection system technology, applied in the field of traffic detection, can solve the problems of low speed accuracy and complex structure, and achieve the effect of accurate vehicle speed detection, simple system structure, and fast speed detection method

Active Publication Date: 2020-09-29
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

[0002] Most of the existing vehicle traffic parameter detection systems have complex structures, and the accuracy of the measured speed is not high, and the measured speed is mostly scalar

Method used

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  • Vector model-based detection system and method for single geomagnetic vehicle traffic parameters
  • Vector model-based detection system and method for single geomagnetic vehicle traffic parameters
  • Vector model-based detection system and method for single geomagnetic vehicle traffic parameters

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] The vehicle speed detector is based on the vector property of the velocity in kinematics, that is, the resultant velocity of an object moving in a plane is the vector sum of two component velocities. If the directions of the two component velocities are vertical (that is, orthogonal), then the resultant velocity is the square root of the sum of the squares of the two component velocities. Its system structure diagram is as follows figure 1 shown.

[0027] The vehicle speed detection system uses 4-way magnetic sensors to amplify the magnetic detection signal to a suitable range through the instrument amplifier, and then converts it into a digital signal through an analog-to-digital converter and then inputs it to the signal analysis processor. The signal analysis processor can be used relatively A high-performance ARM or DSP chip, a...

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Abstract

The invention relates to a monomagnetic vehicle traffic parameter detecting system based on a vector model and a method thereof, wherein the system and the method belong to the field of traffic detection. The system comprises four sets of magnetic sensors, four sets of instrument amplifiers, four sets of analog-to-digital converters, a digital signal analyzing processor, a two-dimensional gyroscope sensor, a wireless transmission module power supply module and a system interface. The four sets of magnetic sensors are connected with the four sets of instrument amplifiers, and are connected withthe four sets of analog-to-digital converters. Then the four sets of magnetic sensors are connected with the digital signal analyzing processor. The magnetic sensors amplify a magnetic detected signal to an appropriate interval through the instrument amplifiers. After the magnetic detected signal is converted to a digital signal through the analog-to-digital converters, the digital signal is input into the digital signal analyzing processor, and simultaneously the two-dimensional gyroscope sensor measures an included angle between the detecting system and pavement. The monomagnetic vehicle traffic parameter detecting system has advantages of simple structure, quick speed detecting method, high accuracy in vehicle speed detection, and simple construction process.

Description

technical field [0001] The invention belongs to the field of traffic detection, and relates to a single geomagnetism vehicle traffic parameter detection system and method based on a vector model. Background technique [0002] Most of the existing vehicle traffic parameter detection systems are complex in structure, and the accuracy of the measured speed is not high, and the measured speed is mostly scalar. Therefore, there is an urgent need for a vehicle traffic parameter detection system with high measurement accuracy, simple structure, and convenient measurement method. Contents of the invention [0003] In view of this, the object of the present invention is to provide a single-geomagnetism vehicle traffic parameter detection system and method based on a vector model, which uses a speed vector model to detect vehicle speed. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] Single geomagnetic vehicle traffi...

Claims

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Application Information

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IPC IPC(8): G08G1/042
CPCG08G1/042
Inventor 邓天民徐进邹筑煜田杰屈治华方芳
Owner CHONGQING JIAOTONG UNIVERSITY
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