地震前兆设备观测网络校时服务器部署方案设计  

Configuration scheme design of SNTP servers for earthquake observation device network

作　　者：王秀英[1] 刘爱春[1] 周振安[1] 

机构地区：[1]中国地震局地壳应力研究所,中国北京100085

出　　处：《地震学报》2009年第6期691-698,共8页Acta Seismologica Sinica

基　　金：中国地震局地壳应力研究所中央公益性科研院所基本科研业务专项项目(ZDJ2007-4)资助

摘　　要：针对目前地震前兆设备存在较大时钟偏差及时钟不一致的问题,分析了存在问题的关键环节,并给出了一套在地震行业网三级结构的节点分别部署校时钟服务器的方案.由国家中心时钟源同步区域中心时钟源、区域中心时钟源同步所辖台站时钟源,最终实现前兆设备在台站内部校时.通过此方案,设备校时可在本地完成,减少了网络中断、延时的影响;均衡国家中心网络校时服务器的负载,可以基本解决全国前兆设备时钟偏差较大和不一致的问题.This paper discussed the problem that earthquake precursory recording devices have time deviation from the standard time and clocks in different devices are not consistent.The key to solve this problem is analyzed and a scheme is given to distribute the time correction servers on the basis of the earthquake enterprise network structure.By this scheme,time correction source in the national center is responsible for correcting servers＇ time in the regional centers,and regional centers correct time for their stations,and eventually devices＇ time is corrected at local stations.This scheme can greatly reduce the effect of network breaking or delaying,and balance the burden of the time server in the national center.Time deviation and disaccord problems among the devices distributed over the whole country can be generally solved by this method.

关 键 词：前兆设备 地震前兆观测网络 校时 简单网络时间协议 时间服务 

分 类 号：P315.73[天文地球—地震学]