A compensation calibration method and system for a magnetostrictive level gauge

CN122084072AInactive Publication Date: 2026-05-26XIAN JINGZHUN ELECTRON CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN JINGZHUN ELECTRON CO LTD
Filing Date
2026-04-27
Publication Date
2026-05-26
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing magnetostrictive level gauge compensation methods are prone to overcorrection or response lag, resulting in inaccurate level measurement. In particular, when the liquid temperature changes dynamically, it is difficult to effectively distinguish and quantify interference factors such as wave velocity changes, crystal oscillator drift, and changes in the force state of the float.

Method used

By acquiring the liquid temperature and measured liquid level of the magnetostrictive level gauge at various times, deviation-liquid temperature curves for each interference dimension are constructed, segmentation points are selected and subdivision coefficients are obtained, dynamic correction is performed in combination with the liquid temperature change trend, and liquid level is weighted by comprehensively considering the influence weight of each interference factor.

Benefits of technology

It achieves high-precision compensation for liquid level measurement results under different temperature conditions, improves the accuracy and stability of liquid level measurement, and can simultaneously integrate the influence of multiple interference factors and reflect their direction and intensity.

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Abstract

This invention relates to the field of liquid level measurement technology, specifically to a compensation calibration method and system for a magnetostrictive liquid level gauge. The method includes: acquiring the liquid temperature and measured liquid level at various times using the magnetostrictive liquid level gauge; acquiring the deviation-liquid temperature curves for each interference dimension and the liquid level deviation for each liquid temperature; dividing the deviation-liquid temperature curves for each interference dimension into several deviation curve segments; acquiring the true liquid temperature at each time based on the local liquid temperature changes at each time; and correcting the measured liquid level at each time by combining the amplitude and trend of the deviation curve segments for each interference dimension and their corresponding liquid level deviations, thereby obtaining the true liquid level at each time. This invention improves the accuracy of liquid level measurement results by segmenting and modeling multi-dimensional interference factors and correcting the measured liquid level based on temperature change trends.
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