Numerical Study of the Frequency Charateristics of the Electrochemical Seismometer

摘要

This paper presented a numerical simulation of an electrochemical seismometer, which provided an effective approach to study its transfer functions. The fluid-solid coupling model was firstly used in this paper to establish the link between the external vibrations and the internal velocities of the liquid inertial mass of the electrochemical seismometer. Some key parameters in the numerical simulation were obtained from experimental measurements to enhance the accuracy of the model, leading to high correlation coefficients (0.97) between simulation and experimental results in the amplitude-frequency responses. Moreover, based on the numerical model, the effects of the number of electrode pores on the amplitude frequency responses of the sensor were studied. As a result, an electrochemical seismometer with wide working bandwidth (0.14 Hz -100 Hz) was realized.