Integrated laser scanning traffic survey device and integrated laser scanning traffic survey method

Abstract

The invention discloses an integrated laser scanning traffic survey device and an integrated laser scanning traffic survey method, wherein the device comprises a laser-emitting unit, a laser-splitting unit, a focused light-receiving unit, a data conversion unit and a data analysis and processing unit; the laser-emitting unit is used for generating a pulsed laser beam; the laser-splitting unit is used for splitting the pulsed laser, so that at least two scanning detection sections are generated on the running sections of detected vehicles; the focused light-receiving unit is used for receiving and focusing the return light of the diffusely reflected pulsed laser to enhance the optical signal as the detected vehicles pass through the scanning detection sections; the data conversion unit is used for converting the focused optical signal into an electric signal; and the data analysis and processing unit is used for acquiring the running information of the detected vehicles according to the electric signal. The integrated laser scanning traffic survey device is easy and convenient to mount, debug and maintain in practice; only one device can accurately measure the speeds of motor vehicles and accurately identify vehicle models, so that traffic conditions can be surveyed; moreover, the detection precision is high, the cost is low, and the invention is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of laser applications, in particular to an integrated laser scanning traffic condition investigation device and method. Background technique [0002] As an important information resource of road traffic, traffic survey is the basis of macro management and decision-making in the transportation industry, and is the information support for the accelerated transformation and development of road traffic. The field of intelligent transportation involves the investigation of traffic conditions, and it is necessary to measure the speed of vehicles on the road and identify the vehicle type. [0003] The methods currently used for vehicle speed measurement and vehicle identification on highways can be divided into video detection technology, ultrasonic detection technology, infrared detection technology, induction coil detection technology, piezoelectric film and coil combination technology, and Laser detection techn...

AI Technical Summary

Problems solved by technology

However, the cost of using two laser scanning ranging devices is high and the construction volume is large, which is not conducive to widespread promotion

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