发明授权
- 专利标题： Wireless telemetry circuit structure for measuring temperature in high temperature environments
- 专利标题（中）： 用于测量高温环境温度的无线遥测电路结构
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申请号： US12192366申请日： 2008-08-15
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公开(公告)号： US08092080B2公开(公告)日： 2012-01-10
- 发明人: David J. Mitchell , Anand A. Kulkarni , Ramesh Subramanian , Edward R. Roesch , Rod Waits , Roberto Schupbach , John R. Fraley , Alexander B. Lostetter , Brice McPherson , Bryon Western
- 申请人： David J. Mitchell , Anand A. Kulkarni , Ramesh Subramanian , Edward R. Roesch , Rod Waits , Roberto Schupbach , John R. Fraley , Alexander B. Lostetter , Brice McPherson , Bryon Western
- 申请人地址： US FL Orlando
- 专利权人： Siemens Energy, Inc.
- 当前专利权人： Siemens Energy, Inc.
- 当前专利权人地址： US FL Orlando
- 主分类号： G01K1/00
- IPC分类号： G01K1/00
摘要：
A circuit affixed to a moving part of an engine for sensing and processing the temperature of the part. The circuit generates a signal representative of the temperature sensed by a thermocouple (110) and amplified by an amplifier (112). A square wave oscillator (113) with a temperature sensitive capacitor (C8) varies its frequency in response to changes of a local temperature of the circuit. A chopper (114, J27) converts the output of the amplifier into an alternating current signal. The chopper is gated by the square wave oscillator and a second input is coupled to an output of the amplifier. Thus, the chopper has an output signal having a frequency representative of the local temperature and an amplitude representative of the thermocouple temperature, whereby the combined signals represent the true temperature of the part.
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