Inertial sensor based on anti-magnet suspension

Abstract

The invention discloses an inertial sensor based on anti-magnet suspension, comprising: an anti-magnet suspension structure comprising: a fixed permanent magnet, a suspended permanent magnet, a suspended permanent magnet protection structure and diamagnetic materials, wherein the fixed permanent magnet is fixed directly above the suspended permanent magnet for providing a suspension force for thesuspended permanent magnet, so as to overcome the gravity of the suspended permanent magnet, so that the suspended permanent magnet is suspended; the suspended permanent magnet protection structure islocated at the periphery of the suspended permanent magnet, and the diamagnetic materials are symmetrically fixed on a built-in surface of the suspended permanent magnet protection structure to provide symmetrical diamagnetic forces to limit the movement of the suspended permanent magnet; when the anti-magnet suspension structure is subjected to an external acting force, such that the position ofthe floating permanent magnet changes, a diamagnetic force acts as a quasi-elastic restoring force to constrain the position of the suspended permanent magnet; and an optical displacement sensor detects the displacement change of the suspended permanent magnet in the space to determine an external inertia acceleration. The inertial sensor disclosed by the invention solves the problems of the influence of the friction force of the existing gravity acceleration sensor and the energy dissipation.

Description

technical field [0001] The present invention relates to the technical field of inertial sensors, and more particularly, relates to an inertial sensor based on diamagnetic levitation. Background technique [0002] Near the surface, the earth's gravitational field is one of the most basic and important physical fields, which is of great significance to the precise measurement of the gravitational field. Gravity measurement has broad application prospects in resource exploration, auxiliary navigation, national defense and earth science. Taking the acceleration of gravity sensor as an example, the acceleration of gravity sensor is a precision gravity measurement sensor that measures small changes in the acceleration of gravity. [0003] The basic model of the mechanical structure of the acceleration of gravity sensor is a spring-oscillator structure, which is composed of a spring, a proof mass, and damping caused by air or structure. The proof mass is usually used as the core s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to solve the technical problems of the existing gravitational acceleration sensor, which requires energy from the outside, direct contact between the spring and the mass block to generate friction, the friction force affects the performance of the sensor, and energy dissipation

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