导致拾震器常数标定进入误区的研究

Study on the misleading in scaling of seismic geophone constant

在拾震器的标定过程中 ,当 Ri≤ 1 0 MΩ 时 ,空气阻尼太大 ,所测定的 D10 结果不准确 ,从而导致 S1、a12 、RD 以及 C、β12 均不准确 ,所得 V也不准确 ,同时记录地震的波形也会受到影响 ,为此建议在标定和工作时 ,要串上分压电阻 R,以此为导向使得放大器输入电阻 Ri≥1 0 MΩ时 ,所得结果才能符合规范要求 ,本研究通过多次测试均达到良好的效果。

in the scaling of seismic geophone,the air damping will be too large to measure D 10 accurately,thus causing S1,a12,RD,and C all inaccurate.The V we get will be inaccurate also,and the waveform of seismic record will be affected simultaneously.So we suggest we should connect in series a resistance R when scaling.Only if the inputting resistance of amplifier Ri≥10MΩ,the results will meet the need of the criteria.The tests all get good effect in the study.