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,文中提出了一种Wiegand(韦根)协议和RS-485协议转换的软件设计方法,以LPC922单片机作为控制核心,选用RS485接口协议芯片,实现Wiegand协议和RS-485协议转换。实验结果表明,所设计的转换器实现了Wiegand和RS485的双向通信,实现了Wiegand数据的远距离传输,传输距离可达500米以上。
Wiegand protocol and RS-485 protocol are the most widely used in the current security system. A protocol conversion software method of Wiegand - to- RS485 is proposed, in which RS485 protocol chip is used and LPC922 processor is selected as the center controller. The experiment results presented the designed converter can realize long distance communication between Wiegand and RS485, and the converter＇s communication distance can reach to 500 meters above.
出处
《西安邮电学院学报》
2009年第1期116-119,共4页
Journal of Xi'an Institute of Posts and Telecommunications
基金
西安邮电学院中青年基金(110-0414)
