Title:
ABNORMALITY DETECTION DEVICE, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/127329
Kind Code:
A1
Abstract:
The present invention improves the accuracy of abnormality detection for an apparatus. An abnormality detection device according to one embodiment of the present disclosure comprises a control unit, and is characterized in that the control unit: creates a N+1-dimensional topological space using a value at an arbitrary time and N values prior to the arbitrary time from time series data that is a target of abnormality detection in an air conditioner; creates a normal region and an abnormal region in the topological space according to a distribution when normal time series data and abnormal time series data have been mapped in the topological space; acquires at least N+1 values from the time series data that is the target of abnormality detection in the air conditioner; and specifies whether the at least N+1 values are mapped in the normal region or are mapped in the abnormal region, thereby determining and outputting whether the time series data is normal or abnormal.
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Inventors:
YAMADA SHOHEI (JP)
YOSHIMI MANABU (JP)
KASAHARA SHINICHI (JP)
YOSHIMI MANABU (JP)
KASAHARA SHINICHI (JP)
Application Number:
PCT/JP2022/042183
Publication Date:
July 06, 2023
Filing Date:
November 14, 2022
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F24F11/32; F24F11/36; F24F11/38; F24F11/64; F25B49/02
Foreign References:
| JP2020197347A | 2020-12-10 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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