High speed infrared radiation thermometer, system, and method
Abstract
The high-speed radiation thermometer has an infrared measurement wavelength band that is matched to the infrared wavelength band of near-blackbody emittance of ceramic components and ceramic thermal barrier coatings used in turbine engines. It is comprised of a long wavelength infrared detector, a signal amplifier, an analog-to-digital converter, an optical system to collect radiation from the target, an optical filter, and an integral reference signal to maintain a calibrated response. A megahertz range electronic data acquisition system is connected to the radiation detector to operate on raw data obtained. Because the thermometer operates optimally at 8 to 12 .mu.m, where emittance is near-blackbody for ceramics, interferences to measurements performed in turbine engines are minimized. The method and apparatus are optimized to enable mapping of surface temperatures on fast moving ceramic elements, and the thermometer can provide microsecond response, with inherent self-diagnostic and calibration-correction features.
- Inventors:
-
- Middlefield, CT
- Issue Date:
- Research Org.:
- Advanced Fuel Research, Inc., East Hartford, CT (US)
- OSTI Identifier:
- 874313
- Patent Number(s):
- 6364524
- Assignee:
- Advanced Fuel Research, Inc (East Hartford, CT)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
- DOE Contract Number:
- FG02-96ER82112
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- speed; infrared; radiation; thermometer; method; high-speed; measurement; wavelength; band; matched; near-blackbody; emittance; ceramic; components; thermal; barrier; coatings; turbine; engines; comprised; detector; signal; amplifier; analog-to-digital; converter; optical; collect; target; filter; integral; reference; maintain; calibrated; response; megahertz; range; electronic; data; acquisition; connected; operate; raw; obtained; operates; optimally; 12; mum; ceramics; interferences; measurements; performed; minimized; apparatus; optimized; enable; mapping; surface; temperatures; fast; moving; elements; provide; microsecond; inherent; self-diagnostic; calibration-correction; features; turbine engine; radiation detector; infrared radiation; reference signal; wavelength band; /374/
Citation Formats
Markham, James R. High speed infrared radiation thermometer, system, and method. United States: N. p., 2002.
Web.
Markham, James R. High speed infrared radiation thermometer, system, and method. United States.
Markham, James R. Tue .
"High speed infrared radiation thermometer, system, and method". United States. https://www.osti.gov/servlets/purl/874313.
@article{osti_874313,
title = {High speed infrared radiation thermometer, system, and method},
author = {Markham, James R},
abstractNote = {The high-speed radiation thermometer has an infrared measurement wavelength band that is matched to the infrared wavelength band of near-blackbody emittance of ceramic components and ceramic thermal barrier coatings used in turbine engines. It is comprised of a long wavelength infrared detector, a signal amplifier, an analog-to-digital converter, an optical system to collect radiation from the target, an optical filter, and an integral reference signal to maintain a calibrated response. A megahertz range electronic data acquisition system is connected to the radiation detector to operate on raw data obtained. Because the thermometer operates optimally at 8 to 12 .mu.m, where emittance is near-blackbody for ceramics, interferences to measurements performed in turbine engines are minimized. The method and apparatus are optimized to enable mapping of surface temperatures on fast moving ceramic elements, and the thermometer can provide microsecond response, with inherent self-diagnostic and calibration-correction features.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}