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Two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control

A technology of crustal deformation and balance feedback, which is applied to electromagnetic measuring devices, measuring devices, and electrical devices, etc., to achieve the effects of wide observation frequency band, large dynamic range, and good linearity

Active Publication Date: 2018-09-14
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, studies have shown that the change or anomaly of solid tides can only serve the mid-term and long-term earthquake prediction for the time being

Method used

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  • Two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control
  • Two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control
  • Two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] Below in conjunction with accompanying drawing and embodiment this device is described in detail:

[0064] 1. Overall

[0065] like figure 1 , the device includes a main body 100, a first capacitance detection circuit 210, a second capacitance detection circuit 220, a first PID control circuit 310, a second PID control circuit 320, a first electrostatic force drive circuit 410, a second electrostatic force drive circuit 420, a voltage Feed circuit 500, adder 610 and subtractor 620;

[0066] The solid tide signal A and the crustal deformation rotation signal B enter the main body 100;

[0067] The main body 100, the first capacitance detection circuit 210, the first PID control circuit 310, the first electrostatic force drive circuit 410 and the main body 100 are sequentially connected in a closed loop;

[0068] The main body 100, the second capacitance detection circuit 220, the second PID control circuit 320, the second electrostatic force drive circuit 420 and the ...

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Abstract

The invention discloses a two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control, and relates to the technology of earthquake precursory warning observation. A solid tide signal and a crustal deformation rotating signal enter a main body; the main body, a first capacitance detection circuit, a first PID control circuit, a first electrostatic force drive circuit and the main body are connected in turn in a closed-loop way; the main body, a second capacitance detection circuit, a second PID control circuit, a second electrostatic force drive circuit and the main body are connected in turn in the closed-loop way; the first electrostatic force drive circuit and the second electrostatic force drive circuit are respectively connected with an adder and output a solid tide voltage signal; and the first electrostatic force drive circuit and the second electrostatic force drive circuit are respectively connected with a subtracter and output a crustal deformation rotating voltage signal. According to the two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control, single point horizontal amount and rotating amount are measured simultaneously, the observation frequency band is wide, the dynamic range is large and linearity is great so that the two-degree-of-freedom crustal deformation observation device is a crustal deformation observation broadband feedback instrument and suitable for earthquake precursory warning.

Description

technical field [0001] The invention relates to an earthquake precursor early warning observation technology, in particular to a two-degree-of-freedom crustal deformation observation device based on electrostatic force balance feedback control. Background technique [0002] Prediction of earthquake precursors is one of the major topics in earthquake research. Successfully predicting the time, place, and size of earthquakes is also a worldwide problem, largely due to the inability to obtain comprehensive, accurate and quantitative information related to earthquake precursors. Crustal deformation measurement is one of the main means for earthquake precursors to predict earthquakes. The physical concept is clear, directly reflects the changes in the crust, and explains the stress and deformation of the crust and the process and end of earthquakes caused by faults. [0003] After entering the 21st century, the country has higher and more specific requirements for earthquake pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16G01B7/30G01V1/18
CPCG01B7/22G01B7/30G01V1/181
Inventor 吴涛李树德张道忠周云耀张黎
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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