检波器组合的电路特性及其应用

在石油地震勘探中,为了压制干扰,每道地震信号都采用多个检波器的组合.本文分析了检波器组合的等效电路,推导出检波器组合的传输特性--检波器组合输出电压与检波点地面振动速度的数学关系,应用这一理论可以确定,采用串联数等于并联数的串并联方式是检波器组合最佳的电路连接方式,地震信号采集电路的输入电阻应远大于检波器的阻尼电阻.

Research On Circuits Connection Of Geophone Array

In seismic prospecting for oil each seismic channel uses multi-geophone array for noise suppression.The equivalent circuit of geophone array is analyzed. The transfer characteristic of geophone array is derived which mathematically relates output voltage of geophone array to ground motion velocity. On the basis of this theory it can be determined that a geophone array consisting of the same number of geophones in series as number of strings in parallel is optimum and that input resistance of acquisition circuit of seismic signal must be much larger than damping resistance ofgeophone.