摘要
现今老年人过马路时事故频发,设计一种能够在老年人过马路时提示潜在危险并及时排除危险的仪器已经十分必要了。该文以51单片机和KS103超生波测距模块为核心,以数码管、蜂鸣器、外设键盘、DS18B20外界温度测量模块为辅助电路,设计了一款当行人过马路时,通过单片机的控制和超声波测距的产品。该产品能够自动计算出远方车辆的行驶速度以及车辆保持匀速行驶到行人正前方的时间。如果系统根据实际的天气情况判断发现行人通过马路存在危险,则通过蜂鸣器报警提示行人存在危险,从而及时避免事故的发生。
Today,as accident often happens when the elderly cross the road,designing a device which can prompt and exclude the potential risk around them when they are crossing the road is very necessary. This system selects 51 single chip microcomputer and the ultrasonic module of KS103 as the core. The external circuit is designed basing on digital tube,independent keyboard,buzzer and the temperature sensor of DS18B20 which was used to detect the temperature of external environment. When people are crossing the road,this product can calculate the distance and the speed of the vehicle automatically through the MCU and the ultrasonic module of KS103.Then it will calculate the time before the vehicle which keeps that speed comes here and display it by the digital tube. If it can＇ t meet the conditions that used to ensure pedestrians＇ safety,the buzzer will alarm. So the accident can be avoided timely.
出处
《实验科学与技术》
2015年第6期258-260,共3页
Experiment Science and Technology
