【摘要】 本文简要介绍了CDMA传输技术及其在地震前兆远程子台的应用,之后以天津市地震局宝坻地震台的远程子台为实例,对地震前兆远程子台CDMA传输中的故障原因进行了研究,指出导致CDMA传输故障的原因主要有:仪器通讯部分故障、资费余额不足、路由器"假死"、路由器死机、路由器内部故障(特别是SIM卡接触不良)、CDMA信号强度不够、交换机故障、传输硬件连接断路等。在此基础上提出了一套行之有效的故障诊断流程,并对常见故障原因的判定和排除方法做了归纳整理。本文对使用CDMA传输方式或其他无线传输方式的地震前兆远程子台的维护管理人员有一定的参考意义。更多还原

【Abstract】 This paper introduces briefly the CDMA transmission technology and its application in earthquake precursor remote sub-stations. Taking Baodi seismic remote sub-stations of Earthquake Administration of Tianjin Municipality as an example, we study the causes of the CDMA transmission failure on the earthquake precursor remote sub-stations, and summarize the following major reasons: instrument communication part failure, tariff balance shortage, ‘suspended death’ of routers, router system halted, internal fault (especially the SIM card bad contact), weak CDMA signal, the switch fault, transmission hardware connection circuit breaking, etc. On this basis, we develop a set of effective failure diagnosis process, and make a summery for the judgment and elimination method of the reason of the common faults. Our results provide useful references for earthquake precursor remote sub-stations maintenance management with CDMA transmission mode or other means for wireless transmission.更多还原