Patent ID: 11892853
Assignee: ASSA ABLOY ENTRANCE SYSTEMS AB
Field: Control (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A system for use in a yard of a distribution center, the yard containing at least one cargo trailer, the system comprising:
an autonomous tractor configured to move from a first location in the yard spaced apart from the cargo trailer to a second location in the yard proximate the cargo trailer, wherein the autonomous tractor includes—
a fifth wheel configured to couple the autonomous tractor to the cargo trailer for movement of the cargo trailer;
a first sensor configured to detect, relative to the first sensor, an angular position of a first sensor target positioned on the cargo trailer and an angular position of a second sensor target positioned on the cargo trailer and spaced apart from the first sensor target; and
a second sensor spaced apart from the first sensor and configured to detect, relative to the second sensor, an angular position of the first sensor target and an angular position of the second sensor target,

wherein the cargo trailer includes—
a body having a front end portion spaced apart from a rear end portion; and
a kingpin positioned beneath the body toward the front end portion,
wherein the first sensor target is positioned above the body proximate the rear end portion, and
wherein the second sensor target is positioned above the body proximate the rear end portion, wherein the first and second sensors are configured to detect the angular positions of the first and second sensor targets prior to engagement of the kingpin by the fifth wheel.