电动车测速报警装置的实验设计  

Experimental Design about a Device of Electric Vehicle for the Speed Measurement and Alarm

作　　者：方路线[1] 姜亮[1] 张乐[1] 

机构地区：[1]武汉工程大学,湖北武汉430073

出　　处：《大学物理实验》2013年第3期44-45,47,共3页Physical Experiment of College

摘　　要：为提高电动车的行驶安全系数,通过实验研究的方法设计了测速报警装置。借助霍尔效应的原理,对电动车车轮的转速进行测量得到其行驶速度,来实现预警和报警,从而提高其行驶安全系数。In order to improve the safety coefficient of the electric vehicle＇s driving, we have designed a device for speed measuring and giving an alarm through the experimental research method. This device is mainly comprised of seven parts, the Hall sensor of switch, signal input processing circuit, MCU processing module, LCD module, voice warning module, buzzer alarm module and speed limit module. Hall sensor transformed revolving speed of the motor into voltage pulsers signals. Chip microcomputer＇s counter would get to count up those signals ,while the internal chip＇s timer to time on the rotating cycle of the machine,which could help to meter the electric motor＇s driving speed. Then different modules would be driven to work according to the corresponding speed. Finally,the driving safety coefficient of the electric vehicle would improve effectively by the means of the early warning from voice, the buzzer alarm and the speed limit.

关 键 词：电动车行驶安全 转速 单片机 语音预警 蜂鸣报警 

分 类 号：TK513[动力工程及工程热物理—热能工程]