US 12,449,502 B2
Personnel safety sensing system
Alan Patrick John Finlay, Hereford And Worcester (GB); and Andrew Henry John Larkins, Berkshire (GB)
Assigned to Salunda Limited, Oxfordshire (GB)
Filed by Salunda Limited, Oxfordshire (GB)
Filed on Jun. 3, 2025, as Appl. No. 19/226,444.
Application 19/226,444 is a continuation of application No. 19/043,349, filed on Jan. 31, 2025.
Application 19/043,349 is a continuation in part of application No. 17/387,540, filed on Jul. 28, 2021, granted, now 12,320,909, issued on Jun. 3, 2025.
Application 17/387,540 is a continuation of application No. 16/659,366, filed on Oct. 21, 2019, granted, now 11,079,464, issued on Aug. 3, 2021.
Application 16/659,366 is a continuation of application No. PCT/GB2019/050932, filed on Mar. 29, 2019.
Claims priority of application No. 1805323 (GB), filed on Mar. 29, 2018; application No. 1806281 (GB), filed on Apr. 17, 2018; application No. 1806697 (GB), filed on Apr. 24, 2018; application No. 1813975 (GB), filed on Aug. 28, 2018; application No. 1817474 (GB), filed on Oct. 26, 2018; and application No. 1903656 (GB), filed on Mar. 18, 2019.
Prior Publication US 2025/0291021 A1, Sep. 18, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 5/02 (2010.01); G01S 17/48 (2006.01); G01S 17/88 (2006.01); G08B 7/06 (2006.01); G08B 21/02 (2006.01); H04B 1/3827 (2015.01)
CPC G01S 5/02585 (2020.05) [G01S 17/48 (2013.01); G01S 17/88 (2013.01); G08B 21/02 (2013.01); H04B 1/385 (2013.01); G08B 7/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A location system for locating a plurality of people and/or a plurality of equipment, the location system comprising:
a plurality of reflective elements disposed on the plurality of people and/or the plurality of equipment;
a plurality of Infrared light detectors mounted at known locations and configured to detect Infrared light reflected from the reflective elements disposed on the plurality of people and/or the plurality of equipment;
one or more illuminating light sources configured to emit Infrared light, wherein the Infrared light reflected from the plurality of people and/or the plurality of equipment is light from the one or more illuminating light sources; and
a processing system configured to:
determine the locations of each of the plurality of people and/or each of the plurality of equipment using the Infrared light detected by the plurality of light detectors; and
control the activity of at least one of the plurality of equipment and/or output a warning signal based on at least one determined location of the plurality of people and/or at least one determined location of the plurality of equipment.