US 11,923,694 B2
Remote power safety system
Thomas J. Nugent, Jr., Bellevue, WA (US); Jordin T. Kare, San Jose, CA (US); and Alexander Hay, Bellevue, WA (US)
Assigned to LASERMOTIVE, INC., Kent, WA (US)
Filed by LaserMotive, Inc., Kent, WA (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,792.
Application 17/834,792 is a division of application No. 16/079,073, granted, now 11,368,054, previously published as PCT/US2017/018980, filed on Feb. 22, 2017.
Claims priority of provisional application 62/298,405, filed on Feb. 22, 2016.
Prior Publication US 2022/0302765 A1, Sep. 22, 2022
Int. Cl. H02J 50/30 (2016.01); H02J 50/60 (2016.01); H04B 10/80 (2013.01); G01S 17/66 (2006.01)
CPC H02J 50/30 (2016.02) [H02J 50/60 (2016.02); H04B 10/807 (2013.01); G01S 17/66 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A laser system to pass laser light from a first location to a second location that is remote from the first location, the laser system including a guard beam emitter arranged to emit a guard beam toward a corresponding guard beam detector, the laser system including a non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, when executed by a processor, cause the processor to:
store an optical intensity profile, the optical intensity profile defining guard beam light received by the corresponding guard beam detector over time;
detect a change in guard beam light received by the corresponding guard beam detector based on a comparison of current guard beam light received by the corresponding guard beam detector and values stored in the optical intensity profile;
store a plurality of additional optical intensity profiles, a first one of the plurality of additional optical intensity profiles corresponding to guard beam light received by the guard beam detector in the presence of a smaller object and a second one of the plurality of additional optical intensity profiles corresponding to guard beam light received by the guard beam detector in the presence of a larger object, wherein detecting the change in guard beam light includes determining a size of an object by comparing the current guard beam light with the first and second one of the plurality of additional optical intensity profiles; and
disable the laser light passed from the first location to the second location based on the detected change in guard beam light.