【摘要】 408 UL系统地震区域网络采用TCP/IP网络通讯协议,整个地震排列是数据传输和命令传输的通路,传输过程中数据组织为数据帧形式,采用同步与异步传输。本文着重介绍了数据传输过程中数据帧的编码方法,以及模数转换电路、FDU通讯电路、FDU接口电路数据传输的原理,同时结合FDU输入电路分析了两例因雷击导致的故障原因及解决方法。更多还原

【Abstract】 Using TCP/IP network communication protocol,the seismic array is a data and command transmission path in 408UL network system.During the transmission process,the data form is data frame by synchronous and asynchronous transfer mode.This paper introduces the data transmission frame encoding methods,and the working principle of analog-digital conversion circuitry,FDU communication circuits and FDU data transmission interface circuit in detail.In addition,this paper analyzes two cases of failure caused by thunder and lightning and propose effective solutions.更多还原