RS232型多串行通道单纤光端机的设计与实现

为有效延长数据的传输距离,解决电缆传输数据时电磁辐射、防电磁干扰、点对点设备间不共地、抗雷击以及信道资源共享等难题,采用多协议串行通信控制器Intel 82530和单纤双向TTL光收发一体模块设计了多串行通道单纤光端机。设计中,谋求了硬、软件规模最佳平衡点。对产生通信误差的原因进行分析,通过计算,选取合适的晶体振荡器,控制了多串行通道单纤光端机的通信误差,对常用的通信速率可获得准确的波特率。多串行通道单纤光端机可广泛应用于将串行数据远传至异地的单芯光纤的点到点连接,它克服了电缆传输数据的弊端,提高了数据的可靠性,同时也减少了有色金属和信道资源的消耗。

Design and realization of RS 232 single fiber optical transceiver with multiple serial channels

To extend the data transmission distance and solve the problems of electromagnetic radiation,anti-electromagnetic interference,non-sharing address of point-to-point equipment,anti-lightning and channel resource sharing of data transmission through the cable,the paper introduces a single fiber optical transceiver with multi-protocol serial communications controller Intel 82530 and single fiber bi-directional TTL optical transceiver module.In the design,the scale of hardware and software is balanced.And the reason of communication error is analyzed.Through the calculation,the proper crystal oscillator is selected and the communication error of the optical transceiver is controlled.At the same time,the accurate Baud rate for the communication rate is obtained.The optical transceiver is widely used in point-to-point connection of single fiber with remote transmission of serial data.The optical transceiver improves the reliability of data and reduces the consumption of non-ferrous metal and channel resources.