IEEE1588V2在有线遥测地震仪GEIST438上的应用

Application of IEEE1588V2 on Cable Telemetry Seismometer GEIST438

野外施工时的地震数据采集,测网中要放置上千道采集站。同时启动地震仪数据采集是研究数字地震仪的主要任务之一。吉林大学利用地震仪接力式网络拓扑结构,成功研制出基于以太网有线遥测地震仪GEIST438。如何实现地震仪器数据同步采集是本文主要探究的内容。通过对目前广泛应用的同步技术对比,确立了基于IEEE1588V2协议来实现地震仪GEIST438同步数据采集。本次探究为地震仪数据采集同步精度进一步提高到微秒量级开辟了一个新的解决方法。

When acquiring seismic data,need to place thousands of seismometers in the whole system.One of the principal tasks is how to synchronize all these seismometers to start together and work together.Based on the characteristics of distributed system of seismic data acquisition,Jilin University proposed the topological structure of the Relay Ethernet and designed cable telemetry seismometers,GEIST438.How to make GEIST438 synchronize acquiring seismic data is the main research in this thesis.With the contrast of widespread used synchronization technology,we decided to use IEEE1588V2 to carry out the synchronization of GEIST438.This implementation method would help improve the precision of synchronization to microsecond level.