Mobile device which senses particulate matter and method of sensing particulate matter with the mobile device
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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Abstract
A mobile device which senses particulate matter is provided. The mobile device includes a housing having an air flow path through which air flows when the mobile device is shaken; an inertia sensor that detects acceleration of the mobile device; a light-scattering type sensor that irradiates the air flow path with light and detects particulate matter in air flowing through the air flow path; and a controller that includes a counter for counting the particulate matter detected by the light-scattering type sensor, and a flow rate calculator for detecting an air flow rate of the air flow path based on a detection signal of the inertia sensor.
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Citations
20 Claims
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1. A mobile device which senses particulate matter, the mobile device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of sensing particulate matter with a mobile device, the method comprising:
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supplying air to an air flow path of the mobile device through a first opening and a second opening provided at a housing of the mobile device by shaking the mobile device; detecting and counting particulate matter in air flowing through the air flow path, with a light-scattering type sensor; detecting an acceleration of the mobile device with an inertia sensor, and calculating an air flow rate of the air passing through the air flow path based on the detected acceleration; and outputting a pollution level calculated based on a result of the counting of the particulate matter when the calculated air flow rate is equal to a reference flow rate, and stopping sensing of the particulate matter after the outputting of the pollution level. - View Dependent Claims (15)
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16. A mobile device which senses particulate matter and carbon dioxide, the mobile device comprising:
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a housing configured to have an air flow path through which air flows; a shutter configured to move to a first location to open the air flow path, and move to a second location to close the air flow path; a light-scattering type sensor configured to irradiate the air flow path with light, and to detect particulate matter in air flowing in the air flow path when the shutter is located at the first location; and a carbon dioxide concentration calculator configured to control the light-scattering type sensor to irradiate the air flow path with light and to sense carbon dioxide in the air flow path based on the output of the light-scattering type sensor when the shutter is located at the second location. - View Dependent Claims (17, 18, 19, 20)
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Specification