OPTICAL PARTICLE SENSOR AND SENSING METHOD

An optical particle sensor has at least first and second threshold settings applied to an optical sensor or a sensor signal to obtain first and second optical sensor readings. The first and second optical sensor readings are processed to determine a parameter which is dependent on a type of pollutio...

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Bibliographic Details
Main Authors OUWELTJES, Okke, JONGERIUS, Michiel, Johannes, KARAKAYA, Koray, KOOIJMAN, Gerben
Format Patent
LanguageEnglish
French
German
Published 18.04.2018
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:An optical particle sensor has at least first and second threshold settings applied to an optical sensor or a sensor signal to obtain first and second optical sensor readings. The first and second optical sensor readings are processed to determine a parameter which is dependent on a type of pollution event. The parameter is used to determine from at least one of the first and second optical sensor readings a mass of all particles below a first particle size. In this way the mass of all particles below a desired size can be evaluated, even though the optical sensor may not be responsive to the smallest particles.
Bibliography:Application Number: EP20160730743