黑龙江测震台站综合系统故障分析

Fault analysis of integrated system of Heilongjiang Seismic Station

为提升黑龙江测震台网运行的连续率及可靠度,汇集2018—2021年31个观测站的历史故障数据,通过计算R(t)、MTBF等参数对测震系统及其子系统的故障进行整理分析,得到各子系统平均单次维修周期、故障时长占比、综合系统平均故障间隔时间,通信、供电、测震、综合系统的可靠度依次为0.78、0.91、0.82、0.51。分析认为,黑龙江测震系统可靠度较低,故障频繁,外部通信故障时长、观测站测震系统维修周期均较长,这是影响测震台网运行连续率的主要因素;从时间上来看,各系统冬季故障较少,夏季较频繁。

In order to improve the continuity and reliability of Heilongjiang Seismic Network system,the historical fault data of 31stations from 2018 to 2021 were collected,and the fault causes,types,duration and proportion of the integrated seismic system and subsystems were analyzed through calculating parameters such as R(t)and MTBF.The reliability of communication,power supply,seismic and integrated system is 0.78,0.91,0.82 and 0.51,respectively,and the average single maintenance cycle of each subsystem,the proportion of failure duration and the mean time between failures of the integrated system are also obtained.The results show that the main factors affecting the continuous rate of the network are the low reliability and frequent faults of the Heilongjiang Seismic system,the long time of external communication faults,and the long maintenance cycle of the seismic system.In terms of time,the system faults are less in winter and more in summer.