对比法测试地震计传感参数

笔者提出使用对比法测试地震计传感参数,即灵敏度、敏感轴方向角和倾角等的方案,包括测试数据采集、测试频带选择、传感参数计算方法等,并给出参数结果误差估计方法。为了满足斜轴悬挂、UVW输出地震计参数测试需要,给出此类地震计传感参数测试方案。通过合成数据、振动台检验验证,批量地震计参数重复测试证明该测试方法精度高、可信、可靠。对比法既适用于大批量地震仪器参数测试,也适用于地震台站现场,在不影响台站日常观测情况下,对单个地震计参数进行测试,其测试条件要求不高,操作简单、快捷,是测试生产、观测中地震计传感参数的一种可行办法。

Measurement of sensing parameters for seismometer with side-by-side comparison

A new method for measurement on sensing parameters is given in this paper. All sensing parameters include sensitivity, directional angle and dip angle may be determined with the side-by-side comparison at one time. The data acquisition, algorithm for calculation of the parameters, and error estimation of result are supplied in this paper. Tested with synthesized data, shake table, the measurement of 10 sets of seismometer, the method is proven precise, reliable and credible. The sensing parameters of both traditional XYZ seismometer and smart UVW type seismometer are able to be determined with this method. This method is suitable to measuring sensing parameters for a few of seismometers at one time, may be used for quality control of seismometers in production. It is also suitable for measurement of sensing parameters of a seismometer at a seismic station where the instruments may not be moved and shake table is not available.