Title:
MANHOLE PUMP DIAGNOSING METHOD AND MANHOLE PUMP DIAGNOSING DEVICE
Document Type and Number:
Japanese Patent JP2023078117
Kind Code:
A
Abstract:
To provide a manhole pump diagnosing method that can perform, even with a small physical quantity, an accurate diagnosis of an abnormality due to various causes.SOLUTION: A manhole pump diagnosing method includes: a sampling step of calculating, on the basis of an operating time per actuation of each manhole pump within a predetermined diagnosis time period, average operating times as a pair of characteristic values; a normalizing step of normalizing the pair of calculated characteristic values; a diagnosing step of plotting the pair of normalized characteristic values on a two-dimensional coordinate system, and performing a primary diagnosis on the normality or abnormality of each manhole pump on the basis of which side the plotted characteristic value point is present across a preset boundary threshold; and a diagnosis map which has the external side of the boundary threshold that is set in the two-dimensional coordinate system divided into a plurality of regions, and has each region associated with any one of the abnormality causes. The diagnosing step is for diagnosing the abnormality cause on the basis of the region where each characteristic value point is plotted on the diagnosis map.SELECTED DRAWING: Figure 3
Inventors:
KOMATSU KAZUTO
KAWAKATSU HIROYUKI
KAWABATA MASAHIRO
YOSHINAGA HIROSHI
KAWAKATSU HIROYUKI
KAWABATA MASAHIRO
YOSHINAGA HIROSHI
Application Number:
JP2023016528A
Publication Date:
June 06, 2023
Filing Date:
February 07, 2023
Export Citation:
Assignee:
KUBOTA KK
International Classes:
G05B23/02; E03F5/02; E03F5/22; F04B51/00; F04D15/00; G01M13/00
Attorney, Agent or Firm:
Kaoru Hashimoto
Shinichi Kawasaki
Shinichi Kawasaki
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