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Crustal inclination measurement device and method adopting force balance feedback quartz horizontal pendulum

An inclination measurement and feedback technology, applied in the direction of measurement device, inclination measurement, surveying and navigation, etc., can solve the problems of low linearity and dynamic range index, open loop, and unsatisfactory frequency characteristics, so as to improve the working stability. Linearity and linearity, extending the operating frequency band, avoiding the effect of personal safety problems

Active Publication Date: 2017-05-31
INST OF EARTHQUAKE SCI CHINA EARTHQUAKE ADMINISTATION
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Problems solved by technology

[0004] The object of the present invention is to provide a force balance feedback quartz horizontal pendulum inclination measuring device and method to solve the existing problems of the existing quartz horizontal pendulum inclinometer such as open loop, unsatisfactory frequency characteristics, linearity and dynamic range indicators. Advanced problems can comprehensively improve the performance of the instrument

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  • Crustal inclination measurement device and method adopting force balance feedback quartz horizontal pendulum

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[0028] like Figure 1 to Figure 4 As shown, the force balance feedback type quartz level pendulum ground inclination measuring device of the present invention comprises a base plate 14, the base plate 14 is supported by the feet 18, and the leveling screw 16 for adjusting the sensitivity of the instrument and the position of the pendulum 15 are installed on the base plate 14 leveling screw 17. A tower-shaped quartz support 11 is fixed on the bottom plate 14, and the quartz pendulum 12 is suspended on the support 11 by two quartz hanging wires 13, in a nearly horizontal state. As shown in the figure, one end of a hanging wire 13 is fixed on the bottom of the bracket 11 and the other end is fixed on one end of the swing rod 12 , and one end of another hanging wire 13 is fixed on the top of the bracket 11 and the other end is fixed on the middle part of the swing rod 12 . The other end of the pendulum 12 is inserted with a metal pendulum 15 . First and second parallel metal pl...

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Abstract

The invention discloses a crustal inclination measurement device and method adopting a force balance feedback quartz horizontal pendulum. The crustal inclination measurement device comprises a bottom plate, wherein a tower-shaped quartz rack is fixed on the bottom plate. A quartz pendulum rod is suspended on the rack through two quartz suspension springs, and is at an approximately horizontal state. A pendulum bob is inserted and mounted at one end of the pendulum rod, and first and second parallel metal plates are respectively arranged on the two sides of the vertically arranged pendulum bob. The pendulum bob is parallel with the first and second parallel metal plates, so as to form a differential plate capacitor, wherein the pendulum bob serves as a moving plate, and the first and second parallel metal plates serve as static plates. The first and second parallel metal plates are connected with output terminals of a fixed direct current voltage generation unit and a sine waveform generation unit; the pendulum bob is connected with the input terminal of a crustal inclination measurement circuit; the output terminal of the crustal inclination measurement circuit is connected with the pendulum bob through a feedback unit. The crustal inclination measurement device can realize accurate measurement of crustal inclination angle when small inclination of the ground occurs, and a closed-loop feedback structure is constructed to solves problems in the existing quartz horizontal pendulum clinometers.

Description

technical field [0001] The invention relates to an instrument and method for measuring ground inclination of a quartz horizontal pendulum based on differential capacitive micro-displacement detection and electrostatic force feedback technology, belonging to the field of ground inclination measurement. Background technique [0002] The pendulum inclinometer is the earliest short-baseline inclinometer used to measure ground inclination. It uses two hanging wires to hang a horizontal pendulum bar so that it is in a nearly horizontal state. A pendulum is installed at one end of the pendulum bar. When the ground slightly tilts perpendicular to the pendulum plane, the pendulum will drive the pendulum to deflect at a larger angle, and the deflection angle can be detected by sensors such as optical levers. [0003] Utilizing fused quartz with excellent performance and its drawn filaments, Zhu Hu of the Institute of Geophysics, China Earthquake Administration and other seniors develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/12G01C9/06
CPCG01C9/06G01C9/12G01C2009/062
Inventor 高尚华薛兵李际弘冯海英朱小毅王洪体林湛崔仁胜
Owner INST OF EARTHQUAKE SCI CHINA EARTHQUAKE ADMINISTATION
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