Adaptive eccentricity compensation sensitivity-enhanced pressure ring sensor, and method for constructing loading and unloading measurement models therefor

By using the spherical washer structure of the adaptive eccentric compensation enhanced pressure ring sensor and fiber optic grating measurement technology, the problems of large sensor size, limited range and poor accuracy are solved, and high-precision pressure measurement is achieved.

WO2026152896A1PCT designated stage Publication Date: 2026-07-23HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2025-11-28
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Existing gasket-type pressure ring sensors suffer from problems such as large size, limited range, poor measurement accuracy, and susceptibility to eccentric loads.

Method used

An adaptive eccentricity-compensated enhanced pressure ring sensor was designed. It adopts a spherical washer structure and achieves adaptive deflection through the spherical contact structure design to reduce the influence of eccentric load. It also utilizes fiber optic strain and temperature measurement units for accurate measurement and establishes a loading and unloading measurement model.

Benefits of technology

The sensor's measurement sensitivity and accuracy have been improved, its size has been reduced, and the impact on the friction coefficient of the contact surface has been decreased, achieving a measurement effect that is small in size, has a large range, and is highly accurate.

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Abstract

Disclosed is an adaptive eccentricity compensation sensitivity-enhanced pressure ring sensor, comprising: an upper force transmission unit (1), a lower force transmission unit (2), a measurement elastic body unit (3), an upper protective cover plate (4) and a lower protective cover plate (5), wherein the upper force transmission unit (1), the lower force transmission unit (2) and the measurement elastic body unit (3) are provided with a concentric through hole (11) for a bolt to pass through; the upper force transmission unit (1) and the lower force transmission unit (2) are of a convex spherical toroidal structure, which can automatically adjust and compensate for load eccentricity caused by uneven contact between contact planes; and fiber Bragg grating strain measurement units (9) are arranged on the outer side of the measurement elastic body unit (3). The advantages of small volume, large measuring range, high precision, automatic deviation correction and good reliability are achieved. Also disclosed is a method for constructing loading and unloading measurement models for an adaptive eccentricity compensation sensitivity-enhanced pressure ring sensor.
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