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精确测量动圈式地震检波器灵敏度对获取高质量的地震勘探资料是十分重要的 ,而用直流激励法测量动圈式检波器灵敏度与实际结果出现差异。文章在论述测量原理的基础上 ,指出了该方法在测量过程中忽略了检波器实际响应中的放电尖脉冲对灵敏度测试结果的影响 ,从而揭示了直流激励法灵敏度测得值要小于经典振动法的原因。文章同时对直流激励法测量检波器灵敏度的量值溯源问题做了初步尝试并提出了一种可行的消除检波器灵敏度测试方法误差的方案
Accurately measuring the sensitivity of moving-coil geophones is very important for obtaining high-quality seismic exploration data. However, the difference between the sensitivity of dynamic-coil geophones measured by DC excitation method and the actual results is different. Based on the discussion of measurement principle, the article points out that the method ignores the influence of the discharge spike on the sensitivity test results during the measurement, and reveals that the sensitivity of the DC excitation method is less than that of the classical vibration method s reason. At the same time, the paper tries to find out the traceability of the detector sensitivity by using the DC excitation method and proposes a feasible solution to eliminate the error of the detector sensitivity test method