Speed type magnetoelectric high-sensitivity seismic geophone

Abstract

The invention discloses a speed type magnetoelectric high-sensitivity seismic geophone, which comprises a top cap assembly, a bottom cap, an iron shell, a coil assembly, two silver-plated magnetic shoes, a permanent magnet, a leaf spring and a clamp spring, wherein the two silver-plated magnetic shoes are respectively positioned on the upper end and the lower end of the permanent magnet, the permanent magnet is positioned in the middle of the coil assembly, the iron shell is arranged outside the permanent magnet, the magnetized permanent magnet forms a magnetic loop through the silver-plated magnetic shoes and the iron shell, thus forming a magnetic system; the coil assembly consists of an upper leaf spring and a lower leaf spring which are clamped on the upper end and the lower end of the coil assembly through the clamp spring, thus forming a spring-mass damping vibration system; the coil system is at horizontal position through the upward resultant force generated by the upper leaf spring and the lower leaf spring, and suspended in a magnetic field between the silver-plated magnetic shoes and the iron shell. The frequency, damp, sensitivity and parameter precision of the seismic geophone can meet the high-precision fine exploring requirement.

Description

technical field [0001] The invention relates to a special sensor for geological exploration and engineering survey, in particular to a velocity-type magnetoelectric high-sensitivity geophone, which belongs to the technical field of earthquake detection instruments. Background technique [0002] A geophone is a sensor that converts ground vibrations into electrical signals, or an energy conversion device that converts mechanical energy into electrical energy. The geophone is one of the important components of the seismic data acquisition system. The geophone is buried in the ground, converts the ground vibration caused by the seismic wave into an electrical signal and sends the electrical signal to the seismograph through the cable; the digital seismograph amplifies the received electrical signal, converts it into binary data through an analog / digital converter, and organizes data and store data. [0003] With the increasingly higher requirements for 3D seismic survey accur...

AI Technical Summary

Problems solved by technology

In field acquisition, in order to obtain better acquisition data, the geophones are required to be arranged horizontally, upright, and well coupled. Terrain is even more difficult to achieve

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