The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2017
Filed:
Aug. 07, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A device for detecting a concentration of tiny particulates in an air sample is provided. The device comprises: a container that contains the air sample and has an opening; a sealing mechanism that opens or seals the opening; a sensor provided in the container and operative to sense a total concentration of particulates in the air sample within the container; and a controller connected to the sensor and operative to control the sealing mechanism. The controller is configured to: control the sealing mechanism to open the opening and the sensor to sense a first total concentration of particulates; control the sealing mechanism to seal the opening, so as to seal the container for a predetermined time period, and then control the sensor to sense a second total concentration of particulates; calculate a ratio of a concentration of tiny particulates to a total concentration of particulates based on a predetermined relationship between the ratio of the concentration of tiny particulates to the total concentration of particulates and a ratio of the second total concentration of particulates to the first total concentration of particulates; and calculate the concentration of tiny particulates in the air sample based on the first total concentration of particulates and the ratio of the concentration of tiny particulates to the total concentration of particulates.