本文介绍一种基于单片机与热释电红外传感技术，统计客车客流量的自动计数器系统的设计过程。本系统通过安装在客车车门上方的双探头热释电传感器，自动扫描进入感应区域的乘客并判断其是否上下车，再通过单片机的数据处理，最后输出到液晶显示屏上显示。本系统实时统计车上的乘客数量，方便大客车司机根据车上人数判断是否满载。%This paper introduces a method based on MCU and pyroelectric infrared sensor technology, statistics of bus passenger flow of the automatic counter system design process. The system through the double probe pyroelectric sensor which installed at the top of the passenger door, automatic scanning into the sensing region and judge whether the passengers get on and off, through the MCU data processing, than output to a liquid crystal display.
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