Core of piezoelectric acceleration seismic detector

Abstract

The machine core for piezoelectric acceleration detector comprises: arranging a inertial groupware between two piezoelectric conversion members and fixing three in one piece; embedding the permanent magnet in center of inertial groupware between two magnetic pole pieces and an insulation cap outside the magnetic pole piece; crossing a fix screw the center hole of conversion member to fix two members on outside of the magnetic pole pieces; supporting the conversion members and inertial groupware on spring-flake insulation vibrator bracket and insulation spacing ring; embedding a vortex ring inner side of the vibrator bracket. This invention separates the damping source and inertial body, and solves the problem in the current technique. The piezoelectric detector with this invention has high output amplitude, strong anti-aftervibration ability and broad frequency band.

Description

technical field [0001] The invention relates to a geophone for seismic exploration, which belongs to an active geophone, in particular to a core of a piezoelectric acceleration geophone. Background technique [0002] Geological and geophysical seismic wave signals contain high and low frequency components. Among them, the low frequency components are richer. During the propagation of the signal in the formation, the energy loss of the high-frequency component is faster, and the farther the propagation is, the greater the loss ratio is. The weaker the high-frequency signal is, the more unfavorable it is to the formation resolution of exploration. At present, geological and geophysical prospecting technology has been developed to high-resolution exploration. The bottleneck of high-resolution exploration is mainly the acquisition of high-frequency and weak signals in deep and thin layers. The source of acquisition is the geophone. The geophones used in the geophysical prospe...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a movement of a piezoelectric acceleration detector, which solves the problem that the damping source is separated from the inertial body in the background technology, and the mass and damping of the inertial body cannot be made to have a good consistency at the same time, so it cannot be guaranteed The consistency of the waveform collected by the sensor, as well as the technical problems that the consistency of product process accuracy and product performance are not easy to ensure

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