Patent ID: 8027225

Claim:
A system for determining coil eccentricity of one or more seismic sensor configured or designed for use in seismic signal detection, comprising: at least one seismic sensor, comprising: a housing; at least one magnet for creating a magnetic field mounted within the housing; a moving coil mounted within the housing; at least one spring assembly connected to the housing and the moving coil for supporting the moving coil for transduction within the magnetic field; a digital signal processor in communication with the seismic sensor; a set of instructions executable by the processor that, when executed: applies to the moving coil of the at least one seismic sensor a direct electrical current such that the moving coil is dislocated from a neutral position relative to the magnetic field in the seismic sensor; monitors a predetermined indicator relative to the dislocation of the coil from the neutral position; and determines eccentricity of the coil (δ) relative to the center of the magnetic filed using the predetermined indicator.