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

摘要: 在拾震器的标定过程中,当Ri≤10 MΩ时,空气阻尼太大,所测定的D10结果不准确,从而导致S₁、a12、R_D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 ≥ 10 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。

Abstract: in the scaling of seismic geophone, the air damping will be too large to measure D 10 accurately, thus causing S₁, a12, R_D, 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.