基于单片机的远程光纤通信在点对点安全验证系统上的应用

现有的点对点安全验证系统都是基于电缆连接实现系统信息传输的。电缆传输信号存在传输衰减大、抗干扰能力差、在雷暴天气易发生事故等缺点。通过将基于单片机89C2051的远程光纤通信应用到现有设备来改进控制信号的传输模式，将电信号转换为光信号，在数据传输中使用传输同步码加密、数据包CRC校验、串行数据编码以及光纤连通性定时自动监测等技术，可以从物理信号传输到数据接收处理的整个过程中保证系统的安全性和可靠性；同时，通过光纤通信方案，也能节省系统构建和维护的经费。

Application of Microcontroller- based Remote Optical Fiber Communication in Point -to - Point Security Authentication System

The existing security authentication systems are based on point -to -point cable connection to realize signal transmission. In cable transmission some problems such as attenuation, poor performance of anti -jamming in the thunderstorm and other shortcomings exist. By using the remote fiber optic communication which is based on microcontroller 89C2051, the control signal transmission mode is inproved. The electrical signal is converted to optical signals in the data transmission using eneryption for transmitting the data paeket with CRC checking, and the serial data coding and fiber optic connectivity automatic timing monitoring tech- niques from the physical signal transmission to the data receiving and processing the entire process to ensure system security and reliability. In the meantime, optical fiber communication through the program could save the system building and maintenance cost.