Title:
A passive wireless sensor for rotary machines
Document Type and Number:
Japanese Patent JP6200557
Kind Code:
B2
Abstract:
A rotary machine includes a rotatable shaft (106) and a retaining ring (202) coupled to, and at least partially extending about, the rotatable shaft (106). The rotatable shaft (106) defines a longitudinal axis (204). The rotatable shaft (106) and the retaining ring (202) define an annular cavity (206). The rotatable shaft (106) and the retaining ring (202) each include a radially outer surface (208,210). The rotary machine also includes a monitoring system including a stationary reader-antenna (240) positioned proximate the retaining ring (202) and a radio frequency (RF) coupler (220). The RF coupler includes at least one flexible antenna band (222,224) coupled to, and extending over, the radially outer surface of the retaining ring (202). The flexible antenna band (222,224) is configured to establish RF coupling with the stationary reader-antenna (240). A sensor die is coupled to the flexible antenna band. The sensor die extends into the substantially annular cavity (206) and the sensor die is also coupled to the radially outer surface (208) of the rotatable shaft (106).
Inventors:
Young Jae Lee
Joseph Alfred Ianotti
Joseph Alfred Ianotti
Application Number:
JP2016129507A
Publication Date:
September 20, 2017
Filing Date:
June 30, 2016
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
G08C15/00; B64D45/00
Domestic Patent References:
| JP2003188621A | ||||
| JP2013158070A | ||||
| JP2006220574A | ||||
| JP2005291999A | ||||
| JP2013077268A | ||||
| JP2007093450A | ||||
| JP2008117165A | ||||
| JP2010520961A |
Foreign References:
| US20070241890 | ||||
| US20140000386 | ||||
| WO1992005402A1 | ||||
| US20050287386 |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka