US 12,379,723 B1
Autonomous mobile robot using multiple safety protocols
Gabriel Hebert, Wakefield, MA (US); Paul Tomashevskyi, Wayland, MA (US); Adam Robert Lehmann, Glendale, AZ (US); Justin Croyle, Kalispell, MT (US); Adam Joseph Greenbaum, Boston, MA (US); Christopher John Schuchmann, Rockledge, FL (US); Erik Edward Steltz, Melrose, MA (US); and Renen Bassik, Lexington, MA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Aug. 29, 2022, as Appl. No. 17/822,996.
Int. Cl. G05D 1/00 (2024.01)
CPC G05D 1/0077 (2013.01) [G05D 1/0214 (2013.01); G05D 1/0234 (2013.01); G05D 1/0272 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
operating an autonomous mobile robot (AMR) according to a first safety protocol of the AMR;
in response to a color sensor of the AMR scanning a first colored strip assigned to an entry of a physical location, determining that the AMR has entered the physical location;
in response to determining that the AMR has entered the physical location, switching the AMR to operate under a second safety protocol of the physical location rather than the first safety protocol while the AMR is located in the physical location, wherein the first safety protocol is different from the second safety protocol;
in response to detecting, by the AMR, that an optical emitter in the physical location has turned off an optical signal, immobilizing the AMR;
in response to receiving instructions, from a safety controller of the physical location, to move to an exit of the physical location, determining that the AMR has completed operating in the physical location;
in response to detecting, by the color sensor, that the AMR has moved proximate a second colored strip after the AMR has completed operating in the physical location, switching the AMR to operate under the first safety protocol, wherein the second colored strip is assigned to the exit of the physical location, and wherein the second color strip is a different color than the first color strip; and
operating the AMR to exit the physical location.