Title:
DIAGNOSING DEVICE OF SIGNAL STATUS IN MEASUREMENT AND CONTROL BY MEASURING MEANS OR CONTROL MEANS
Document Type and Number:
WIPO Patent Application WO/2009/088098
Kind Code:
A1
Abstract:
This aims to provide a diagnosing device for detecting the measurements of an
electric current, a voltage and a resistance by a temperature/moisture or pressure
sensor or a signal state in control means, precisely with a simple circuit constitution,
for diagnosing the soundness of a circuit while simplifying a power source circuit,
to suppress the cost more than the conventional circuit having no diagnosing
function, and for diagnosing the signal status in the measurement or control
by a measuring means or a control means. An alternating voltage generating means
containing a pulse-wave voltage and an alternating current is connected with
the primary side of a transformer, and a driven member such as the measuring means
for any of varying electric current, voltage and resistance is connected with
the secondary side. The change in the primary-side current, which is caused with
the electric power fed through an insulating transformer by the action of the
driven member connected with the secondary side, is measured so that the signal
status in the measuring or control means is diagnosed according to the measurement
result.
Inventors:
EMOTO, Hideaki (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 1088215, JP)
Application Number:
JP2009/050594
Publication Date:
July 16, 2009
Filing Date:
January 09, 2009
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 1088215, JP)
International Classes:
G01R31/00; G01D18/00
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. et al. (Room 1003, Ambassador Roppongi Buildings16-13, Roppongi 3-chome, Minato-k, Tokyo 32, 1060032, JP)
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