摘要
Wiegand(韦根)协议和RS 485协议是安防系统运用最广泛的数据通信接口协议。提出了一种Wiegand协议和RS 485协议转换的硬件设计方法,以LPC922单片机作为控制核心,选用RS 485接口协议芯片,实现Wiegand协议和RS485协议转换。实验结果表明,所设计的转换器实现了Wiegand和RS 485的双向通信,实现了Wiegand数据的远距离传输,传输距离可达500 m以上。
Wiegand protocol and RS 485 protocol are widely used in the current security system,a hardware design method of Wiegand and RS 485 is proposed,in which RS 485 protocol chip is used and LPC922 processor is selected as the center controller. The experiment results present the designed converter can realize long distance communication between Wiegand and RS 485,converter＇s communication distance can reach to 500 above.
出处
《现代电子技术》
2008年第19期72-73,76,共3页
Modern Electronics Technique
基金
西安邮电学院中青年基金(110-0414)
