摘要
随着现代社会程度的高度发展,交通安全问题已成为各国亟待解决的重大课题。论文提出了一种利用超声波技术实现防撞监控预警系统。该系统利用超声波传感器实现距离信号采集与接收,通过单片机AT89C52实现信号分析、处理及声光报警、减速及刹车制动等操作。为保证系统测距精度,利用数字温度传感器DS18B20实现超声波传输速度补偿;为使系统智能性更强,利用红外光电传感器实现测速;利用行程开关检测车辆所处直行、转弯或超车等状态,保证车辆在不同状态下,安全距离的准确计算及预警。文章详细介绍了系统设计原理及部分软硬件设计方法。
With the high development of modem society degree, traffic safety has become the most important problem to be solved It presents an avoiding-collide and early warning system based on ultrasonic sensor. The system completes signal collection and receiving by ultrasonic sensor, the signal is analyzed and processed by single chip microprocessor （SCM）, and SCM AT89C52 controls sound and light alarm, deceleration and dics brake, etc. To ensure distance monitor precision, the system uses temperature sensor DS18B20 to realize ultrasonic transmission speed compensation. By infrared photo-electricity sensor, automobile speed is detected, which makes system more strong intelligence. And the station of turning or overtaking is monitored by travel switch, which assures safety distance accurately calculate and realizes alama. The parts of system hardware and software in detail is introduced
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2009年第5期1155-1159,共5页
Nuclear Electronics & Detection Technology
关键词
防撞预警
超声波测距
光电传感器
温度补偿
Avoiding-collide and early warning, ultrasonic distance, Infrared sensor, photo-electricity sensor, temperature compensation
