Title:
VALVE CONDITION DIAGNOSIS DEVICE AND CONDITION DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2024/084959
Kind Code:
A1
Abstract:
This valve condition diagnosis device specifically indicates a change in a valve operation state and a change prediction for the valve operation state. In the valve condition diagnosis device, when an angle sensor detects the operation of a valve, a processor executes: a step for acquiring, from the angle sensor, angle profiles of the operation of a valve; a step for making a histogram of the acquired angle profiles, averaging the histogram with respect to a plurality of prior and posterior operations, and making relative frequencies; a step for calculating, through the histogram intersection method, the similarity between the histogram of the angle profiles, which has been made as the relative frequencies and that of initial operation angle profiles; a step for plotting the calculated similarity of the angle profiles on a two-dimensional plane which adopts the similarity of opening operation angle profiles in a horizontal axis and the similarity of closing operation angle profiles in a vertical axis; and a step for clustering the plotted data of the similarities of angle profiles, the plotted data being generated by repeating, a plurality of times, the step of plotting.
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Inventors:
SUGA MASATO (JP)
FUJIWARA TSUTOMU (JP)
TAKAGAWA FUMIKA (JP)
FUJIWARA TSUTOMU (JP)
TAKAGAWA FUMIKA (JP)
Application Number:
PCT/JP2023/036073
Publication Date:
April 25, 2024
Filing Date:
October 03, 2023
Export Citation:
Assignee:
TOMOE VALVE CO LTD (JP)
International Classes:
G01M13/003; F16K37/00
Domestic Patent References:
| WO2019235599A1 | 2019-12-12 |
Foreign References:
| JP2017181203A | 2017-10-05 | |||
| JP2020204503A | 2020-12-24 | |||
| JP2016157206A | 2016-09-01 | |||
| JP2020177571A | 2020-10-29 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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