汽车障碍物检测系统的设计

Design of Barriers-Detecting System for Automobile

针对当前汽车事故的频繁发生,为有效降低事故率,文中介绍了以一种以8051单片机为核心的结构简单、精度较高、测距较长、可靠性较高的汽车障碍物检测报警系统。该防撞报警系统利用超声波测距原理,结合了温度传感器进行实时温度的测量,对行进中的汽车前方的障碍物进行实时测距,并且能及时进行障碍物距离的显示及声光报警处理;该系统比较适合在空气能见度低,汽车倒车及晚间行驶等情况下汽车低速行使过程时使用,文中详细阐述了系统的硬件结构和软件设计。

Because of the high frequencyof traffic accident, to reduce amount of accidents, this paper presents a kind of barrier-detecting alarm system based on SCM--8051 for automobile , which have the characteristics of a simple frame, high accuracy, longer measurement distance and high reliability. By using the ultrasonic wave principle about measuring distance and combining with real time measurement of temperature Sensor, the annunciator 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. This system can especially be used under the instances such as the air visibility is low , the automobile is backing or is moving at night , and the vehicle has to go slower. The article expatiates the system hardware frame and design of software in detail.