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Mobile device which senses particulate matter and method of sensing particulate matter with the mobile device

  • US 9,488,575 B2
  • Filed: 03/19/2015
  • Issued: 11/08/2016
  • Est. Priority Date: 07/24/2014
  • Status: Active Grant
First Claim
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1. A mobile device which senses particulate matter, the mobile device comprising:

  • a housing configured to have an air flow path through which air flows in response to the mobile device being shaken;

    an inertia sensor configured to detect an acceleration of the mobile device;

    a light-scattering type sensor configured to irradiate the air flow path with light and detect particulate matter in air flowing through the air flow path; and

    a controller which comprises a counter configured to count the particulate matter detected by the light-scattering type sensor, and a flow rate calculator configured to detect an air flow rate of the air passing through the air flow path based on the acceleration of the mobile device detected by the inertia sensor.

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