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:
Mar. 17, 2026
Filed:
Dec. 29, 2023
Electronics and Telecommunications Research Institute, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided are a multiwavelength photoelectric smoke detection apparatus and method, which reduce non-fire alerts by distinguishing smoke caused by actual fire occurrence and non-fire smoke occurring in daily life when a suspected fire event occurs. The multiwavelength photoelectric smoke detection apparatus includes a chamber in which a smoke inlet is formed, a light emitter for generating light with multiple wavelengths, a light receiver for detecting scattered light due to smoke particles, a controller for turning a light source of the light emitter on and off and detecting a scattered light signal from the light receiver, and a fire determination part for determining whether an amplitude of the detected scattered light signal exceeds a threshold value and generating an alarm.