Wireless telemetry electronic circuitry for measuring strain in high-temperature environments
US8629783B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Jun 19, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/447
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.