%0 Journal Article
%T Ultrasonic Ranging Alarm System Based on PIC<br>基于PIC 单片机的超声测距报警系统
%A LI Xin
%A ZHANG Yun-Chu
%A YANG Hong-Juan
%A ZHANG Yang
%A SHAO Zhu-Hong
%A <br>李欣
%A 张运楚
%A 杨红娟
%A 张洋
%A 邵珠虹
%J 计算机系统应用
%D 2012
%I 
%X This paper designed an ultrasonic ranging system based on PIC16F877A. With the help of high launch driving voltage, the temperature compensation, and software filter, we solved the problem that the traditional ranging system had a closer measuring distance. We greatly increased the detection range and improved the measurement accuracy and realized real-time alarm function. We explained the reason of the changing of CX20106A chip output single level, and put forward two alarm ideas and realized them. The experimental results show that this system can well meet the security of monitoring requirements.
%K ultrasonic ranging
%K security alarm
%K PIC16F877A<br>超声波测距
%K 安防报警
%K PIC16F877A
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D4F6864C950C88FFCE5B6C948A639E39&aid=57C6AD9B0ADA05377E5F111511C42B9C&yid=99E9153A83D4CB11&vid=659D3B06EBF534A7&iid=B31275AF3241DB2D&sid=1D01216AD76577EC&eid=01622E3E475F966C&journal_id=1003-3254&journal_name=计算机系统应用&referenced_num=0&reference_num=6