Combustion monitoring using infrared array-based detectors
| Autor: | Nicola Cross, Chris F Carter |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Measurement Science and Technology. 14:1117-1122 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/0957-0233/14/7/329 |
| Popis: | A new generation of low-cost infrared array-based imaging systems have been put to trial within a combustion control instrumentation project. Being pyroelectric based, the device can be operated as a turbulence sensor if the scene is viewed directly or as a thermal imager by interposing a mechanical chopper. From both scientific and engineering aspects the strong carbon dioxide emission band at 4.4 µm is an ideal target for the sensor and will always be observable from carbonaceous flames in reasonable contrast against a hot background. Data from such an array are processed using powerful algorithms resident on a local digital signal processor, so promising a very low-cost route to a final instrument. A wide range of algorithm classes has been developed: initially in a 'Windows' environment but later transferred to the processor; these make use of both temporal and spatial features in the image stream. The most promising control algorithms demonstrated to date involve statistical measures of pixel activity. |
| Databáze: | OpenAIRE |
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