RESEARCH ON APPLICATION OF TRAFFIC INFORMATION COLLECTION BASED ON MILLIMETER WAVE RADAR

Abstract

This paper proposes a new type of traffic information collection equipment—millimeter wave radar based on ground sensing coils, video detection, microwave detection and other traffic collection equipment; the purpose of the research is to collect road traffic information parameters at intersections through millimeter wave radar. , Such as traffic volume, traffic flow density, time average speed, interval average speed, headway time, vehicle queue length, etc.; introduced the working principle of the frequency modulated continuous wave (FMCW) millimeter wave radar traffic monitoring system modulated by triangle wave, using the Doppler effect to get The speed of the vehicle; the speed-distance formula and the combination of numbers and shapes are used to obtain the queue length of the vehicle; the triangular wave radar can detect the position information of multiple vehicles at the same time, and can obtain real-time traffic volume and traffic flow density; use the speed of a single vehicle and The position information of multiple vehicles can obtain time average speed, interval average speed, headway time and other parameters; compared with existing research, the results obtained in this paper have certain practical significance.