汽车超声波测距系统设计

ABSTRACTFrom the reform and opening up to the accession to the WTO,the rapiddevelopment of the social economy has made residents more and more economicallydisposable,and the income level of the social residents has rapidly increased.Under thebackground of a steady increase in national income,the automobile has become the newdarling of people's consumption,and the social vehicle ownership has maintained arapid growth trend.With many novice drivers on the road,reversing has become amajor problem for troubled novice drivers.In this paper,based on radar distance measurement,the ultrasonic distance meter isdesigned.The paper is divided into four parts:Firstly,the importance of vehicleultrasonic distance meter is explained,and the research purpose of this paper is clarified.The second part is the hardware design.SCM minimum system,ultrasonic sensoranalysis,the use of analog-to-digital converter to convert the distance sensor signal intoa digital signal,into the MCU for logic processing,under specific conditions to controlthe buzzer to issue an alarm;the third part of the software design,respectively,to Themain program flow chart and some key functions of the software design process;thefourth part of the hardware debugging and system testing to verify the design of theultrasonic ranging device function is normal.The design of ultrasonic distancemeasuring device in this paper can realize accurate vehicle distance measuring functionand has very positive significance for the traffic safety in China.Key Words:Ultrasound,Microcontroller,Distance Detection,Traffic Safety