发明名称 |
Wireless Telemetry Circuit Structure for Measuring Temperature in High Temperature Environments |
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. |
申请公布号 |
US2010039288(A1) |
申请公布日期 |
2010.02.18 |
申请号 |
US20080192366 |
申请日期 |
2008.08.15 |
申请人 |
SIEMENS POWER GENERATION, 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.;LOSTETTER ALEXANDER B.;MCPHERSON BRICE;WESTERN BRYON |
分类号 |
G08C19/02;G01K7/02;G01K7/34 |
主分类号 |
G08C19/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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