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:
Nov. 05, 2024
Filed:
Jun. 27, 2022
Electronics and Telecommunications Research Institute, Daejeon, KR;
Hoe Sung Yang, Daejeon, KR;
Soo Cheol Kim, Daejeon, KR;
Hyun Seok Kim, Daejeon, KR;
So Yung Park, Daejeon, KR;
Kang Bok Lee, Daejeon, KR;
Kwang Soo Cho, Daejeon, KR;
Kyu Won Han, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is an apparatus for detecting smoke based on polarization. The apparatus includes a chamber into which smoke is introduced, a detection unit comprising a light-emitting unit configured to emit light beams having a plurality of different wavelengths into a space in the chamber, and a light-receiving unit configured to receive scattered light from a plurality of light sources, a control unit configured to control an operation of the detection unit, and a fire determination unit configured to distinguish between fire smoke and non-fire analogous smoke by detecting and analyzing a light-receiving signal received by the light-receiving unit, in which horizontal polarization and vertical polarization are applied to the plurality of light sources of the light-emitting unit and the light-receiving unit.