地震数据采集系统中的数据传输系统设计

Data Transmission System Design in Marine Seismic Data Acquisition System

针对地震数据采集系统中数据传输的要求,设计了一种长距离冗余数据传输系统,采用串行/解串(Serializer/deserializer,SerDes)技术,利用现场可编辑门阵列(Field programmable gate array,FPGA)作为控制,实现了多节点数据的远距离高速有序传输。两个相邻传输节点之间使用两条互为备份的数传通道同时发送数据,接收端硬件上实现两路数据的实时校验和判选,有效地提高了传输系统的稳定性和可靠性。

A long-distance redundant data transmission system is developed for time-lapse marine seismic data acquisition system. Serializer/deserializer （SerDes） technology is applied to archieve long-distance high-speed data transmission. A field programmable gate array （FPGA） is used as a control unit to ensure the synchronization and timeliness of the multi-node system. Two inter-backup data channels which transfer the same data frame at the same time are used between two adjacent nodes. The receiver verifies each data frame and chooses a correct one in hardware, thus effectively improving the stability and reliability of the data transmission system.