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.
|Journal||Journal of the European optical society|
|Publication status||Published - 11 May 2009|
- liquid level sensing
- spectrum spreading
- phase grating