介紹了預防公路追尾碰撞報警系統，系統由信息采集單元、中央控制單元、報警電路和顯示輸出單元構成。信息采集單元由4 種傳感器完成對車輛運行狀態信號的采集，中央控制單元對輸入信息進行分析、處理，完成防碰撞預測與判斷功能，報警電路產生警報，提醒駕駛員采取措施以避免追尾碰撞事故發生，系統還具備顯示功能。
關鍵詞：傳感器信息采集 追尾碰撞 報警系統
Abstract：The article introduces the warming system when a traffic accident caused by
Rear-end collision between two cars . The system includes the collecting information
unit , the central controlling unit, the alarm circuit and the display unit etc. First, the
car running states are collected by four sensors, Then, All of the collecting
information is analyzed and judged by a single chip microcomputer, forecasting and
judging will be complicated, If there is a hidden trouble of rear-end collision
accident, an alarm will be given ,In addition, display unit is designed.
Key words：sensor collecting information rear-end collision alarming system