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:
Jul. 28, 2015
Filed:
Jun. 07, 2012
Hyun-tak Kim, Daejeon, KR;
Bongjun Kim, Daejeon, KR;
Jong Chan Park, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
Disclosed is a multipurpose alarm apparatus which includes a smoke sensing unit configured to sense a smoke using a first sensor and a second sensor, each of the first and second sensors including a temperature-sensitive smoke sensor portion disposed between a first electrode and a second electrode; a smoke level measuring unit configured to generate a smoke level measurement signal by comparing a difference between first and second smoke detection signals from the first and second sensors with a reference signal; and a sensing control unit configured to generate a fire alarm signal when the smoke level measurement signal corresponds to a fire generation condition.