Moving coil detector for simultaneously detecting speed and acceleration

Abstract

The invention discloses a moving coil detector for simultaneously detecting speed and acceleration. The moving coil detector for simultaneously detecting speed and acceleration is based on a traditional moving coil detector structure, two large flat plate electrodes are arranged above and below a moving coil moving part as a moving capacitor, and one flat plate electrode is respectively arranged on the upper surface and the lower surface of the inner side of a shell as a fixed polar plate, so that a capacitor is respectively formed on the upper part and the lower part of a moving coil to formthe structure of a capacitive accelerometer; two side surfaces of the moving coil are also respectively provided with a capacitor polar plate as a moving polar plate, and the position of the inner wall of the corresponding shell is also provided with a capacitor flat plate as the fixed polar plate, so that two capacitors are formed on the side surface of the moving coil; the upper capacitor and the lower capacitor are connected with the subsequent detection circuit. The beneficial effect of the moving coil detector for simultaneously detecting speed and acceleration is that the double-parameter acquisition and reception of the speed and the acceleration of the same receiving point can be achieved, weak signals can be detected, the propagation characteristics of the seismic waves can be studied more finely, and the exploration precision can be improved; the system structure is simple and the sensitivity is high.

Description

technical field [0001] The invention relates to the detection field, in particular to a moving coil detector for simultaneously detecting speed and acceleration. Background technique [0002] The geophone is a special sensor used for seismic exploration. Its function is to convert the mechanical vibration of the seismic wave into an electrical signal. It is widely used in geophysical exploration, prediction and analysis of natural disasters such as earthquakes and tsunamis, frontier monitoring, railways, bridges, Safety monitoring of tunnels, large buildings, etc., and archaeological research, etc. Deep seismic exploration is affected by factors such as large burial depth of underground deposits and complex and changeable structures, so that the various echoes received by the surface have the characteristics of weak signals, wide frequency bands, and rich frequency components. It has high-resolution, wide-band, large dynamic range and other indicators, and realizes low powe...

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Problems solved by technology

[0006] Traditional geophones only detect velocity quantities

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