地震前兆仪器的资料连续、稳定是预报地震的基础工作之一。过去,每当停电时,报警器发出信号,观测人员总要急急忙忙跑去处理、更换电源(尤其是在夜间停电)。这样既不能保证资料连续,而影响分析使用,又加重了观测人员的负担。为了保证磁偏角仪、 The continuous and stable data of earthquake precursors is one of the basic work of forecasting earthquake. In the past, every time a power outage occurred, the alarm signals that the observer was always in a hurry to process and replace the power (especially during the night). This can neither guarantee the continuous data, and affect the use of analysis, but also increased the burden on observers. In order to ensure magnetic declination,