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Title:
METHODS, SYSTEMS, AND APPARATUS FOR DETECTING LIGHT AND ACOUSTIC WAVES
Document Type and Number:
Japanese Patent JP2012242383
Kind Code:
A
Abstract:

To provide an arc flash detection system that reliably detects arc flash events and mitigates undesired nuisance trips of circuit protection devices.

A sensor includes a sensor head 102 including an acoustic detector 106 configured to receive light 114 from a first light source and to reflect the light 118 upon incidence of acoustic waves 116. The sensor also includes at least one optical fiber 104 and at least one fluorescent material within at least one of the sensor head and the at least one optical fiber 104. The at least one fluorescent material is configured to receive light 120 from a second light source external to the sensor and emit visible light 204 in response to the light received from the second light source.


Inventors:
JUNDAO WU
FORMAN GLENN ALAN
MICHAEL SHANE PYLON
MAO ZHIHONG ROY
CHUN JANG
MAXINE MARY GUIBEAU
LUBOMIR RISTOV CEVOV
Application Number:
JP2012000109002
Publication Date:
December 10, 2012
Filing Date:
May 11, 2012
Export Citation:
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Assignee:
GENERAL ELECTRIC CO GE
International Classes:
G01R31/12; H02H5/00; H04R23/00
Domestic Patent References:
JPS5925116A1984-02-09
JPH0455583U1992-05-13
JP2008032587A2008-02-14
JP2008157759A2008-07-10
JPS5953019A1984-03-27
JP2011095083A2011-05-12
Attorney, Agent or Firm:
荒川 聡志
小倉 博
黒川 俊久
田中 拓人