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APPARATUS AND METHOD FOR MEASURING DUST

  • US 20180011018A1
  • Filed: 06/16/2017
  • Published: 01/11/2018
  • Est. Priority Date: 06/16/2016
  • Status: Active Grant
First Claim
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1. An apparatus for measuring dust, comprising:

  • a flow channel unit for defining a flow channel allowing a fluid containing dust to move through;

    a light emitter for emitting light into the flow channel;

    a light detector for detecting light scattered from the dust in the flow channel and converting the detected light scattered from the dust in the flow channel into an electrical detection signal, the light detector comprising a plurality of detectors having different light detection ranges; and

    a controller for controlling the flow channel unit, the light emitter and the light detector,wherein the controller is configured to;

    receive detection signals from the plurality of detectors,compensate for an offset for the received detection signals, andmeasure a dust concentration based on the compensated detection signals.

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