2、可以显示机车的车速和行驶的总里程,而且可以显示阶段里程,还能显示温度和时间,同时具有超速报警功能。本设计采用A3144e霍尔传感器,通过单片机处理数据计算出机车的车速和里程,再由LCD显示器显示出来。关键词:里程表;单片机;霍尔传感器;测速Abstract:Odometeriswidelyappliedinallkindsofmotorcycle.Themechanicalodometerissimpleandreliable,but function of a singleandvulnerable to wear.Asthe evolutio
3、n of electronic technology,electronic speedometerwidelyusedintheprivatecar.Thispaperintroducesamicro-controllerbased smart speedometer.The table is a digital meter,the total mileage of thevehicle speed and drivingcannotonlyreal-timedisplaycanalsodisplaythespeedalarmfunction.U