Method and device for identifying load state and measuring thickness of structural surface

Abstract

The invention discloses a method and device for identifying the load state of a structure surface and measuring its thickness, belonging to the technical field of icing and water accumulation detection on the structure surface, including recording the amplitude data of the load to be measured under the excitation of multiple vibration frequencies and drawing according to the amplitude data Amplitude-frequency curve of the load to be measured; extract the characteristic value of the curve of the state and thickness of the load to be measured according to the amplitude-frequency curve, input the characteristic value of the curve into multiple training machine learning models and obtain the output information of multiple load types and load thickness; through The voting system selects the correct load type, and eliminates the machine learning corresponding to the wrong load type, and uses the weighted average of the characteristic values ​​of the load thickness curve corresponding to the remaining machine learning models as the final thickness output. The invention extracts the features of the amplitude-frequency response curves under different load conditions, and trains a corresponding machine learning model, thereby achieving the effect of enabling the device to accurately measure the load type and thickness.

Description

technical field [0001] The invention belongs to the technical field of icing and water accumulation detection on structural surfaces, and more specifically relates to a method and device for identifying load states and measuring thicknesses of structural surfaces. Background technique [0002] Icing and water accumulation are regarded as serious safety hazards in specific areas, such as roads, wind turbines, aircraft, EMUs, power transmission lines and towers, etc. Therefore, methods and technologies capable of measuring the thickness of icing and ponding water have also been more and more applied. At present, the measurement technology that has entered the practical stage can be divided into two categories, namely contact measurement technology and non-contact measurement technology. [0003] The non-contact measurement technology mainly uses the spectral characteristics and polarization characteristics of water and ice to distinguish the load type, which can achieve a hig...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method and device for identifying the load state and measuring the thickness of the structural surface, thereby solving the problem that the existing icing and water accumulation detection methods cannot simultaneously meet the requirements for load state identification and thickness measurement. Measurement technical issues

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