Wireless sensor assembly for circumferential monitoring of gas stream properties
AssigneeGeneral Electric Company
InventorsDonald Herbert Maylotte, James Peter DeLancey
Life of this patent
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Abstract
A wireless sensor assembly for circumferential monitoring of gas stream properties comprises a drive system attachable to a hot gas path housing. A rake is movably coupled to the drive system for unrestricted circumferential movement. At least one RF sensor is disposed on the rake for generating a signal responsive to the gas stream properties. Circuitry is provided for remotely powering the at least one RF sensor and for remotely detecting the signal.
Claims38
A wireless sensor assembly for circumferential monitoring of gas stream properties comprising:
- a drive system attachable to a hot gas path housing;
- a rake movably coupled to said drive system for unrestricted circumferential movement;
- at least one RF sensor disposed on said rake for generating a signal responsive to said gas stream properties;
- and
- circuitry for remotely powering said at least one RF sensor and for remotely detecting said signal.
A wireless sensor for circumferential monitoring of gas stream properties within a hot gas path housing, said sensor comprising:
- an RF sensor for generating a signal responsive to said gas stream temperature said RF sensor including an induction coil and a capacitor, said capacitor having a dielectric material, which dielectric material has a dielectric constant that is proportional to temperature;
- an antenna for generating signals to power said RF sensor;
- an RF detector for detecting the signal generated from the RF sensor;
- and
- a microprocessor coupled to said RF detector to correlate the detected signal with the temperature of said gas stream.
A method of monitoring gas stream properties within a hot gas path comprising the steps of:
- positioning an RF sensor sensitive to a respective gas stream property within said hot gas path for generating a signal responsive to said property;
- rotating said RF sensor about said hot gas path housing;
- remotely powering said RF sensor;
- remotely monitoring said generated signals;
- and
- detecting said generating signals.
Dependencies are inferred from the claim text.