Switching-device remaining lifetime diagnosis method and apparatus

US8958993B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8958993-B2
Application numberUS-200913148817-A
CountryUS
Kind codeB2
Filing dateFeb 23, 2009
Priority dateFeb 23, 2009
Publication dateFeb 17, 2015
Grant dateFeb 17, 2015

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

There are provided a switching-device remaining lifetime diagnosis method and a switching-device remaining lifetime diagnosis apparatus, wherein as status amount history data, there are accumulated status amounts related to a deterioration status of a switching device, estimated based on measurement data obtained through measurement of performance characteristics of the switching device; based on the accumulated status amount history data, there are created a plurality of system data pieces in which the status amounts are arranged with the respective abscissas of an elapsed time during an operation period of the switching device, the number of operations of the switching device, an inoperative time of the switching device, and an accumulated operation time of the switching device; based on the created system data pieces, the remaining lifetime of the switching device is estimated.

First claim

Opening claim text (preview).

The invention claimed is: 1. A switching-device remaining lifetime diagnosis method, comprising: measuring performance characteristics of an electric power switching device is by a measurement unit to obtain measurement data; estimating a deterioration status of the switching device based on the obtained measurement data; accumulating the estimated deterioration status of the switching device over time as status amount history data of the switching device by a status amount es…

Assignees

Inventors

Classifications

Patent family

Related publications grouped by family.

External sources

Next steps

Free tools are coming soon. Tell us what you want to track and we'll notify you.

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US8958993B2 cover?
There are provided a switching-device remaining lifetime diagnosis method and a switching-device remaining lifetime diagnosis apparatus, wherein as status amount history data, there are accumulated status amounts related to a deterioration status of a switching device, estimated based on measurement data obtained through measurement of performance characteristics of the switching device; based …
Who is the assignee on this patent?
Horinouchi Katsuhiko, Maruyama Yuko, Mitsubishi Electric Corp
What technology area does this patent fall under?
Primary CPC classification G05B23/0283. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).