公开(公告)号：EP2310819B1

公开(公告)日：2016-12-07

申请号：EP09790020.3

申请日：2009-07-01

申请人： Siemens Energy, Inc.

发明人： KULKARNI, Anand, A. ,  MITCHELL, David, J. ,  ROESCH, Edward, R.

IPC分类号： G01K7/02 ,  G01K7/04 ,  G01K13/02 ,  F01D5/28 ,  F01D17/08

CPC分类号： G01K7/028 ,  F01D5/288 ,  F01D17/085 ,  G01K7/04 ,  G01K2013/024 ,  G01K2217/00

公开(公告)号：EP2433111A1

公开(公告)日：2012-03-28

申请号：EP10708001.2

申请日：2010-02-03

申请人： Siemens Energy, Inc.

发明人： KULKARNI, Anand, A. ,  SHINDE, Sachin, R. ,  MITCHELL, David, J. ,  SUBRAMANIAN, Ramesh

IPC分类号： G01N3/56 ,  F01D21/00

CPC分类号： G01N3/56 ,  F01D17/02 ,  F01D21/003 ,  F05D2230/30 ,  F05D2230/90 ,  F05D2250/183 ,  F05D2260/30 ,  F05D2260/80

摘要： A wear sensor (30, 50, 60) installed on a surface area (24) of a component (20, 21) subject to wear from an opposing surface (74, 75). The sensor has a proximal portion (32A, 52A, 62A) and a distal portion (32C, 52C, 62C) relative to a wear starting position (26). An electrical circuit (40) measures an electrical characteristic such as resistance of the sensor, which changes with progressive reduction of the sensor from the proximal portion to the distal portion during a widening reduction wear of the surface from the starting position. The measuring circuit quantifies the electrical changes to derive a wear depth based on a known geometry of the wear depth per wear width. In this manner, wear depth may be measured with a surface mounted sensor.

公开(公告)号：EP2321621A2

公开(公告)日：2011-05-18

申请号：EP09791120.0

申请日：2009-08-04

申请人： Siemens Energy, Inc. ,  Arkansas Power Electronics International, Inc.

发明人： MITCHELL, David, J. ,  KULKARNI, Anand, A. ,  SUBRAMANIAN, Ramesh ,  ROESCH, Edward, R. ,  WAITS, Rod ,  SCHUPBACH, Roberto ,  FRALEY, John, R. ,  MCPHERSON, Brice ,  WESTERN, Bryon ,  LOSTETTER, Alexander, B.

IPC分类号： G01D5/14 ,  G01D11/24

CPC分类号： G01D3/036 ,  G01K1/024 ,  G01K1/12 ,  G01K1/20 ,  G01K2205/00 ,  G01L1/2281 ,  H03F1/306 ,  H03F2200/18 ,  H03F2200/447

摘要： In a telemetry system for use in an engine, a circuit structure (34) affixed to a moving part (20) of the engine is disposed for amplifying information sensed about a condition of the part and transmitting the sensed information to a receiver external to the engine. The circuit structure is adapted for the high temperature environment of the engine and includes a differential amplifier (102, 111) having an input for receiving a signal from a sensor (101, 110) disposed on the part. A voltage controlled oscillator (104, 115) with an input coupled to the output of the amplifier produces an oscillatory signal having a frequency representative of the sensed condition. A buffer (105, 116) with an input coupled to the output of the oscillator buffers the oscillatory signal, which is then coupled to an antenna (26) for transmitting the information to the receiver.