マンホールポンプの診断方法及びマンホールポンプの診断装置

Japanese Patent JP7224176

B2

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

Ichito Komatsu
Hiroyuki Kawakatsu
Masahiro Kawabata
Yoshinaga Hiroshi

JP2018245241A

February 17, 2023

December 27, 2018

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Kubota Corporation

G05B23/02; F04B49/06; F04B51/00; F04D15/00

JP201534513A
JP2001334999A
JP2015226229A
JP201824055A

US8892263

Kaoru Hashimoto
Shinichi Kawasaki
Yuko Tsumura
Yamashita Shozo

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