Journal of the European Optical Society-Rapid Publications (Jan 2009)
Liquid level sensing by use of digital formatted optical spectrum spreading technique
Abstract
We propose a novel technique for optical liquid level sensing. The technique takes advantage of an optical spectrum spreading technique and directly measures liquid level with a digital format. The performance of the sensor does not suffer from changes of environmental variables and system variables. Due to its distinct measurement principle both high resolution and a large measurement range can be achieved simultaneously.
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