US 12,073,700 B2
Chambered high sensitivity fiber optic smoke detection
Michael J. Birnkrant, Wethersfield, CT (US); and Jennifer M. Alexander, Glastonbury, CT (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 17/058,491
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
PCT Filed Jul. 2, 2019, PCT No. PCT/US2019/040319
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2020/014043, PCT Pub. Date Jan. 16, 2020.
Claims priority of provisional application 62/697,602, filed on Jul. 13, 2018.
Prior Publication US 2021/0201645 A1, Jul. 1, 2021
Int. Cl. G08B 17/107 (2006.01); G01N 21/53 (2006.01); G08B 13/187 (2006.01); G08B 25/04 (2006.01); G08B 26/00 (2006.01)
CPC G08B 17/107 (2013.01) [G01N 21/53 (2013.01); G08B 13/187 (2013.01); G08B 25/04 (2013.01); G08B 26/006 (2013.01); G01N 2201/084 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A detection system for measuring one or more conditions within a predetermined area comprising:
at least one fiber optic cable including at least one optic core for transmitting light to and receiving scattered light from one or more nodes, the one or more nodes being formed in a mounting surface, the light being emitted from the one or more nodes via at least one emitter cone and the scattered light being received by the one or more nodes via at least one receiver cone;
a cover plate having an internal cavity and an end surface, the end surface being affixed to the mounting surface and surrounding the one or more nodes such that the one or more nodes are in communication with the internal cavity, wherein a sensing volume where the at least one emitter cone and the at least one receiver cone extends outside of the cover plate; and
a control system operably coupled to the at least one fiber optic cable so that the scattered light received by the one or more nodes is transmitted to the control system, wherein the control system analyzes the scattered light to evaluate a condition at the one or more nodes.