Experimental calibration method based on multi-sensor signal fusion processing

Through multi-sensor signal fusion processing, step-by-step disturbance scenarios and dynamic reference technology, the problem of insufficient error accumulation and detection capabilities in sensor calibration methods is solved, and real-time error capture and long-term stability calibration of large rotating machinery is realized.

CN120403743AActive Publication Date: 2025-08-01LONGYAN UNIV
7 Cites 40 Cited by

Patent Information

Application Number
CN202510918137.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-03
Publication Date
2025-08-01
Estimated Expiration
2045-07-03

AI Technical Summary

Technical Problem

In the state monitoring and fault diagnosis of large-scale rotary machinery, sensor calibration methods rely on shutdown calibration and single environmental factor compensation, and cannot cope with multi-physical coupling disturbances, resulting in error accumulation and inability to correct in real time, and lack the ability to detect deformation of the installation base and loose mechanical coupling.

Method used

Multi-sensor signal fusion processing method is adopted to stimulate errors through step-by-step electromechanical and thermal coupling disturbance scenes, and dynamic references are generated in combination with optical and material marking technology. Four-level decision rule bases and dynamic confidence weight management are implemented to achieve real-time calibration and error capture.

Benefits of technology

Capture multiple errors in real time in continuous operation state, suppress composite errors, accurately diagnose deformation of the installation base and loose mechanical connections, and ensure spatial consistency and long-term stability of multi-source data fusion.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses an experimental calibration method based on multi-sensor signal fusion processing, particularly relates to the field of data analysis, and comprises the steps of a stepped confrontation disturbance protocol, data stream processing and real-time analysis, and multi-stage logic judgment and calibration execution. A stepped confrontation disturbance protocol is created for the first time, potential errors of the sensor are excited in real time and corrected in a closed loop mode under the condition that system operation is not interrupted, and a traditional shutdown calibration mode is thoroughly replaced; a multi-stage disturbance defense system is constructed, and composite interferences such as spectrum aliasing, overload distortion and signal-to-noise ratio attenuation caused by electromechanical thermal multi-physical field strong coupling are effectively suppressed; laser space calibration and dynamic rigidity modulation technologies are fused, and space drift errors caused by deformation of the mounting base and mechanical loosening are accurately diagnosed and compensated. Finally, long-term precision stability and data fusion reliability of the multi-source sensor under complex working conditions are achieved.
Need to check novelty before this filing date? Find Prior Art