MOTOR STALL AND TRAILER LIFT
    42.
    发明申请

    公开(公告)号:US20220410986A1

    公开(公告)日:2022-12-29

    申请号:US17848152

    申请日:2022-06-23

    Abstract: A method detects and prevents stall of a drive motor of an autonomous electric tractor. A stall detector receives, at intervals, a motor current value from a drive circuit of the autonomous electric tractor, determines when the motor current value reaches or exceeds a first current threshold and applies brakes, inhibits a throttle controlling the drive motor, and sets a motor stall flag. A method determines a height above the ground of a landing gear of a trailer coupled with a tractor. A lift detector controls a hydraulic pump to pump a hydraulic fluid into a chamber of a piston coupled to a fifth wheel of the tractor to raise the fifth wheel. The lift detector senses, at intervals as the fifth wheel rises, a pressure value of the hydraulic fluid in the chamber and processes the pressure value to determine when the landing gear is lifted off the ground.

    SYSTEM AND METHOD FOR CONNECTION OF SERVICE LINES TO TRAILER FRONTS BY AUTOMATED TRUCKS

    公开(公告)号:US20220371199A1

    公开(公告)日:2022-11-24

    申请号:US17729305

    申请日:2022-04-26

    Abstract: This invention provides a system and method for allowing motion of a robotic manipulator on an AV truck in connecting to a native gladhand on a trailer front that represents and constructs a model of this free space on-the-fly, in the manner of an Obstacle Detection and Obstacle Avoidance (OD/OA) system and process. A robotic arm on an AV truck is adapted to connect a pneumatic line to a gladhand on the trailer front. A first 3D sensor generates a pointcloud, and is located at an elevated position on the truck to image the trailer front. A second 3D sensor also generates pointclouds at during robot motion, located adjacent to an end of the robotic arm. An occlusion mapping process generates an occlusion map of the trailer front, and a map update process updates the occlusion map to add and remove voxels therefrom to allow safe guidance of the robot.

    SYSTEM AND METHOD FOR OPTIMIZING MISSION PLANNING, TASK MANAGEMENT AND ROUTING FOR AUTONOMOUS YARD TRUCKS

    公开(公告)号:US20220180281A1

    公开(公告)日:2022-06-09

    申请号:US17525630

    申请日:2021-11-12

    Abstract: This invention provides system and method for optimizing the operation of a shipping facility having trailers that are handled using AV yard trucks. The optimization can be focused on critical time periods where demand for AV yard trucks is high. In non-critical times the AV yard truck(s) can “recover” and “re-stage” within the yard to prepare for future critical times. Unlike human drivers who typically need to remember where to deposit empty trailers for a particular OTR carrier, the zones established with an automated yard system and optimization techniques herein can allow for freer placement of trailers in a manner that best serves the overall schedule of the yard facility. The optimization can be based upon time/overhead costs for differing tasks and determining how to minimize such costs by optimizing assignment of tasks to AV yard trucks on a truck-by-truck basis and in an order that minimizes such costs.

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