1. A Compact Solid-State UV Flame Sensing System Based on Wide-Gap II?VI Thin Film Materials.
- Author
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Liu, Yi, Pang, Liang Xi, Liang, Jing, Cheng, Man Kit, Liang, Jia Jun, Chen, Jun Shu, Lai, Ying Hoi, and Sou, Iam Keong
- Subjects
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THIN film devices , *REAL estate management , *FIRE prevention , *BUILDING design & construction , *PHOTOMULTIPLIERS - Abstract
A compact solid-state UV flame sensing system is developed and tested. We have addressed two approaches for obtaining additional six orders of long-wavelength rejection power on top of that of the built-in UV sensor based on a wide-bandgap II–VI Schottky-barrier structure. An op-amp-based amplification circuit with an average gain of 16 600 is used for signal amplification. It is demonstrated that the developed sensing system could detect a standard butane-air flame with excellent solar-blind characteristics, potentially capable for monitoring industrial boilers. Several feasible approaches were discussed for further improvement in the performance of the developed sensing system targeting its general usage in fire-safety applications. [ABSTRACT FROM PUBLISHER]
- Published
- 2018
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