US 12,276,580 B2
Pump health analysis method and pump health analysis device using the same
Wei-Chen Wu, Taitung (TW); Cheng-Tai Peng, Hsinchu County (TW); and Chih-Chung Kuo, Tainan (TW)
Assigned to UNITED MICROELECTRONICS CORP., Hsinchu (TW)
Filed by UNITED MICROELECTRONICS CORP., Hsinchu (TW)
Filed on Nov. 9, 2022, as Appl. No. 17/983,423.
Claims priority of application No. 202211153487.8 (CN), filed on Sep. 21, 2022.
Prior Publication US 2024/0094094 A1, Mar. 21, 2024
Int. Cl. G01M 99/00 (2011.01); G01H 13/00 (2006.01); G06N 20/00 (2019.01)
CPC G01M 99/005 (2013.01) [G01H 13/00 (2013.01); G06N 20/00 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A pump health analysis method, comprising:
obtaining a standard vibration curve of a standard pump;
converting the standard vibration curve from a time domain to a frequency domain to obtain a first frequency distribution curve;
obtaining a sample vibration curve of a sample pump;
converting the sample vibration curve from the time domain to the frequency domain to obtain a second frequency distribution curve; and
comparing the first frequency distribution curve and the second frequency distribution curve by using a cosine similarity algorithm to obtain a health index of the sample pump;
wherein the step of comparing the first frequency distribution curve and the second frequency distribution curve comprises:
extracting N items of first data with highest intensities from the first frequency distribution curve;
sorting the N items of first data by frequency;
extracting N items of second data with highest intensities from the second frequency distribution curve;
sorting the N items of second data by frequency;
comparing each of the first data and each of the second data to obtain a vector similarity;
calculating a similarity mean of the vector similarities; and
obtaining the health index according to the similarity mean.