The Car Door Opening Collision Avoidance System Based On Willimeter Wave Radar

The popularization of motor vehicles has brought great convenience to people’s life,but the increase of the number of motor vehicles makes the safety of vehicle running out gradually.In addition to common safety accidents,when the vehicle door is stopped after the motor vehicle stops,collision accidents between motorcycles and electric cars coming from doors and rear doors also occur frequently,causing casualties and property losses easily.Therefore,it is of great theoretical significance and extensive application value to design a vehicle door opening collision avoidance system to reduce traffic accidents that are related to vehicle collision.In this paper,a car door collision avoidance system based on millimeter wave radar is designed in the light of the phenomenon that the car’s parking opens at the moment and is very easy to collide with the surrounding moving objects.Firstly,it analyzes and compares various ranging methods in detail,selects the millimeter wave radar as the speed measuring range radar according to the car opening time,rear speed and vehicle distance,and then designs the overall structure of the car door opening anti-collision system,analyzes the rear moving object which is easy to collide with the car,and puts forward the collision avoidance.The evaluation of the system target and the angle range of the millimeter wave radar;considering the driving time of the car and the speed of the rear moving object,the system is classified according to the response time of the driver,and the model control algorithm of the collision avoidance system is designed.At last,the hardware system platform,including power supply,reset,alarm and so on,is set up with DSP chip TMS320LF2407 as the core.The corresponding anticollision software program is designed,and the program flow chart of some important modules is given.The simulation experiment is carried out using the model car model.When the system detects the risk of collision between the passenger and the rear moving object when the passenger is ready to open the door,the corresponding collision avoidance mode is started,the alarm,the door lock and so on are executed to avoid the collision accident.