DETECTOR, ISOLATOR, WARNING SYSTEM AND CONTROL METHOD

Title:

DETECTOR, ISOLATOR, WARNING SYSTEM AND CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2018/056173

Kind Code:

A1

Abstract:

Provided are: a detector which is capable of reducing the capacity of a capacitive element used for operating an isolator; the isolator; a warning system; and a control method. The detector (20) is provided with a short-circuit detection circuit (222), a relay (221), and a control unit (24). The relay (221) is inserted onto a wire (31 or 32). The control unit (24) operates via charges stored in a capacitive element. The control unit (24) repeatedly performs a normal operation for detecting whether a specific event occurs, and opens a contact point unit (2211) of the relay (221) at the time when the occurrence of a short-circuit is detected by the short-circuit detection circuit (222). When a short-circuit occurs between the wires (31, 32), the relay (221) operates by consuming the charges stored in the capacitive element. When the occurrence of the short-circuit is detected by the short-circuit detection circuit (222), the control unit (24) opens the contact point unit (2211) of the relay (221) before an initial normal operation and after the detection of the occurrence of the short-circuit.

Inventors:

OGAWA YUKI
YOSHITSURU TOMOHIRO
SUZUKI TOMOHIRO
TAKAHASHI TATSUYA

Application Number:

PCT/JP2017/033311

Publication Date:

March 29, 2018

Filing Date:

September 14, 2017

Export Citation:

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

G08B17/00; G08B29/18

Foreign References:

JP2007323197A	2007-12-13
JP2007323131A	2007-12-13
US20150214842A1	2015-07-30

Other References: