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一、前言 地应力电感法,经过十几年的野外台站的工作,发现了很多的干扰因素,致使观测数据长期处在不稳定状态,干扰了异常信息。其中,电源电压不稳定是一个重要的干扰因素。其一:据安邱应力站的资料统计(表1)由于电压不稳定造成的数据跳动是很大的,它可以造成数据上升几百微亨,或者下降几十微亨,没有一定的规律性可寻。更严重者可造成电感元件充电,使电感元件长期不稳定。其二:虽然规范中明确规定了台站在投入正常观测之前,必须测定各元件的L-V曲线并选取元件最佳工作电压(电流)
First, the preface To the stress inductive method, after more than ten years of field work stations, found a lot of interference factors, resulting in long-term observation data in an unstable state, interfere with the abnormal information. Among them, the power supply voltage instability is an important interference factor. First, according to the data statistics of Anqiu Stress Station (Table 1), the data jitter caused by voltage instability is very large. It can cause the data to rise by several hundred micro-henries or dozens of micro-henries with no regularity Can be found. More severe cases can cause the inductance element to charge, make the inductance element long-term instability. Second: Although the specification clearly stipulates that the station before putting into normal observation, you must determine the L-V curve of each component and select the best working voltage (current)