Research On The Vehicle Safety Distance Warning System

In recent years,relying on scientific and technological progress,radar technology and laser technology is the rapid development of automobile industry,the rise of automobile from the city to the countryside a trend which cannot be halted,it is changing people's life,the car brings convenience for us at the same time,we have the environment around the traffic more crowded,more and more traffic accidents,resulting in economic losses and not to compensate for damage to many families,car safety has become a global problem,in order to reduce automobile accidents,to design a reliable,economical and practical vehicle safety distance warning system become represent the general trend.As a new technology and stable performance is better than the radar ranging laser ranging began to be used in the automotive industry,the design of the use of laser rangefinder design a vehicle collision warning and active control system,this paper mainly used AT89S51 microcontroller designed for a safe distance warning system for automobile,the principle of signal acquisition Holzer wheel sensor the shaft,through the microcontroller to measure the speed,and the laser technology for laser ranging module and AT89S51 MCU by measuring the vehicle distance,while the vehicle speed and vehicle distance real-time display in LCD driver for reference,the speed measuring module,laser ranging module,LCD display and alarm module,active braking module.The smallest single-chip system and the corresponding control program to realize the organic combination of automatic warning,automatic emergency system The utility model can reduce the emergence of rear end collision,and protect the safety of passengers on the driver and passengers.