Title:
異常診断システム
Document Type and Number:
Japanese Patent JP6944580
Kind Code:
B2
Abstract:
A computer (104) for a manufacturer includes: a storage device (210) storing amount-of-change determination values specified for respective amount-of-change indexes indicative of tendencies of temporal changes in pieces of sensor data A, B, and C, about a plurality of oil properties including a viscosity, a density, and a dielectric constant of oil; an abnormality determining section (211) determining abnormality of the oil on the basis of the pieces of sensor data A, B, and C about the plurality of oil properties and abnormality determination values SAh, SAl, SBh, and SCh prescribed for the respective pieces of sensor data A, B, and C about the plurality of oil properties; a cause identifying section (212) identifying, when the abnormality determining section (211) determines the oil to be abnormal, the cause of the abnormality of the oil on the basis of the type of the oil property determined to be abnormal and the amount-of-change determination value of the oil property; and a transmission section (213) transmitting, to another terminal, the cause of the abnormality identified by the cause identifying section (212).
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Inventors:
Hiroki Takami
Akira Kurasako
Kotaro Ogura
Hideki Akita
Hiroshi Onose
Yoshiya Hamacho
Akira Kurasako
Kotaro Ogura
Hideki Akita
Hiroshi Onose
Yoshiya Hamacho
Application Number:
JP2020181435A
Publication Date:
October 06, 2021
Filing Date:
October 29, 2020
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
G01N33/30; E02F9/26
Domestic Patent References:
| JP2016113819A | ||||
| JP2001236115A | ||||
| JP2016118956A |
Foreign References:
| US7222051 |
Attorney, Agent or Firm:
Kaichi International Patent Office