The Research Of Automobile Anticollision Controlling System Based On Millimeter Wave Radar

The highway traffic, especially the freeway traffic has been developed rapidly since the nineties of the twentieth century. While traffic accident shows a tendency to increase, especially the collision accident which is the most representational accident form.If the drivers can be informed before the accidents taking place, the safety level will be improved greatly. Based on this premise, the correlative technologies about vehicle anti-collision controlling system are studied in this paper. The main research works are presented as follows:First analyzing the automobile anti-collision control system's overall constitution,the system is divided into main control unit subsystems,Ranging radar subsystems,information collection and display sound alarm subsystems four parts; on the basis of this Practical safe distance from the calculation of a simplified model to determine the value of some of these parameters. Bull control system uses a two alarm in the alarm when dangerous,if the driver is not any operational,control actuator moves from the vehicle speed up security. In order to reduce the false alarm rate, the system in the pilot to turn, throttle and brake inhibited the implementation of the reportVehicles dynamics system simulation model is establishment, taken into account the engine, hydraulic torque converter and auto_switching of nonlinear factors, so that they could more accurately simulate the actual prototype cars driving conditions, for the research work to provide satisfactory simulation platform. At the same time, a preliminary study based on the theory of finite state machine (FSM) and Stateflow language switch in the control simulation system applications.In an ideal traffic conditions using throttle control from the vehicle speed can be achieved good control of the bull. Based on the structure of nonlinear electronic throttle, the design of the fuzzy electronic throttle control algorithm, and has carried on the design to the electronic damper's software and hardware.Finally has carried on the analysis to the anti-collision control system's in automobile working conditions and the reliability, and, in the radar ranging subsystem, demonstrated the subsystem and the pronunciation warning subsystem designs when had considered fully these factor's influence, has designed these subsystem's hardware circuit, and has carried on the software programming to the corresponding subsystem.