摘要
为研究后方来车行驶声音大小与行驶速度的关系,采用定时电压取样记忆及相对车速比较判断电路来构建行车警告系统。利用麦克风接收后方来车的行驶声音,并根据时序产生器和检波器输出电压的高低作为判断后方来车相对车速的依据,通过发送安全信号对后视镜及方向灯作安全显示,可防止不当变换车道产生的意外。
In order to study the relationship between the driving sound and the driving speed of the rear car,the timing voltage sampling memory and the relative vehicle speed comparison judging circuit are used to construct the driving warning system,and the microphone is used to receive the driving sound of the rear driving vehicle based on the timing generator and the detector output voltage.The height is used as a basis for judging the relative speed of the rear car.By transmitting a safety signal to the rear view mirror and the direction light for safe display,it can prevent accidents caused by improper lane change.
作者
裴玉龙
岳志坤
李诗桐
PEI Yulong;YUE Zhikun;LI Shitong(School of Traffic & Transportation,Northeast Forestry University,Harbin 150040,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《交通科技与经济》
2019年第4期49-53,共5页
Technology & Economy in Areas of Communications
