摘 要
隨著我國汽車保有量的增多和交通事業(yè)的快速發(fā)展，交通事故率居高不下，交通安全成為越來越重要的社會問題，引起了人們的普遍關注。為有效降低事故率，文中介紹了以一種以AT89S51單片機為核心的結構簡單、精度較高、測距較長、可靠性較高的汽車防撞擊系統(tǒng)。它主要由激光測距傳感器、單片機和控制器組成。該裝置安裝在車輛前部，對本車與前車進行持續(xù)監(jiān)視。在有險情發(fā)生前，它能及時發(fā)出聲光報警，提醒駕駛員注意，并且在危險情況下采取自動制動措施，從而達到有效預防追尾碰撞事故發(fā)生的目的。
關鍵詞 汽車防撞；單片機；激光測距；交通安全
ABSTRACT
Along with the increase in car ownership and the development of transport, the traffic crash rate is keeping in a high level. The traffic safety also becomes more and more important so that people always pay attention to it. To reduce amount of accidents, this paper presents a kind of intelligent automobiles accident avoiding control system based on AT89S51 for automobile, which have the characteristics of a simple frame, high accuracy, long distance and high reliability. The device consists of Laser range sensor, SCM and controllers. Installed in the front of vehicle, the control system can exactly measure the distance between a moving automobile and the roadblock before it, and shows the distance immediately and gives an alarm by emitting voice and light. And the system can automatically brake when the car in a dangerous, thus avoiding the occurrence of traffic accidents.
Keywords automotive; anti-collision; SCM; laser ranging; traffic safety
