US 12,228,459 B2
Fabry-perot based advanced pneumatic fire/overheat detector
Elbert Jeyapaul, Bangalore (IN); and Thambiraj Avudaiappan, Kannamangala (IN)
Assigned to KIDDE TECHNOLOGIES, INC., Wilson, NC (US)
Filed by KIDDE TECHNOLOGIES, INC., Wilson, NC (US)
Filed on Mar. 18, 2021, as Appl. No. 17/205,666.
Claims priority of application No. 202041017086 (IN), filed on Apr. 21, 2020.
Prior Publication US 2021/0325256 A1, Oct. 21, 2021
Int. Cl. G01K 5/48 (2006.01); G01L 9/00 (2006.01); G01M 3/36 (2006.01)
CPC G01K 5/48 (2013.01) [G01L 9/0079 (2013.01); G01M 3/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fire or overheat detection device comprising:
a chamber; a gas and a gas charged core within the chamber; a diaphragm adjacent the chamber, wherein the diaphragm contacts the gas;
a Fabry-Perot interferometer, wherein at least a portion of the Fabry-Perot interferometer is coupled to the diaphragm via a linkage;
a light source configured to direct an input light into the Fabry-Perot interferometer; and
wherein the diaphragm, the chamber, the gas charged core, the Fabry-Perot interferometer, and the light source are all axially aligned along a center axis.