【摘要】 本文介绍了采用新结构的压电式地听器的工作原理。从等效线路出发,我们导出了地听器的灵敏度公式和频率方程式。分析表明:单位质量灵敏度和质量块的形状关系甚小,而和共振频率的关系较大。合理地选择参数,可获得较高的品质因数。更多还原

【Abstract】 This paper presents the working principle of piezoelectric geophone with modified construction. In the light of the equivalent circuit, the sensitivity formula and frequency equation of geophone were deduced. The analysis indicates that the sensitivity on a unit mass is nearly independent of the shape of the mass block, whereas it is more dependent on the resonance frequency of that block. Higher quality will be obtained when the parameters of geophone are chosen reasonably.更多还原