Method and systems for particle characteruzation using optical sensor output signal fluctuation
AssigneeSharp Laboratories of America, Inc.
InventorsYongji Fu, Deepak Ayyagari
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Abstract
Methods and systems for particle characterization using a light fluctuation component of an optical sensor output signal. The use of the light fluctuation component enables particle characterization (e.g. provision of information on particle size, type and confidence) without requiring measurements at multiple wavelengths or multiple angles and using relatively lightweight calculations. The methods and systems allow integration of real-time airborne particle characterization into portable monitors. The methods and systems in some embodiments also use the output signal to further characterize particles through determination of particle density information.
Claims20
A system for particle characterization, comprising:
- a signal processor;
- and
- an optical sensor communicatively coupled with the signal processor, wherein the signal processor isolates a light fluctuation component of an output signal received from the optical sensor and determines particle size information using the light fluctuation component.
A system for particle characterization, comprising:
- a signal processor;
- and
- an optical sensor communicatively coupled with the signal processor, wherein the signal processor isolates a light fluctuation component of an output signal received from the optical sensor and determines particle type information using the light fluctuation component.
A method for particle characterization, comprising the steps of:
- receiving an output signal from an optical sensor;
- isolating a light fluctuation component of the output signal;
- characterizing a particle using the light fluctuation component;
- and
- displaying particle information determined in the characterizing step on an output interface.
Dependencies are inferred from the claim text.