Systems and methods for determining an articulated trailer angle

    公开(公告)号:US11927676B2

    公开(公告)日:2024-03-12

    申请号:US17848188

    申请日:2022-06-23

    CPC classification number: G01S17/931 B60R1/003 B60R2300/105

    Abstract: Systems and methods determine an angle of an articulated trailer relative to a tractor that the trailer is hitched to. An optical encoder is positioned beneath a fifth-wheel of a tractor to couples with a kingpin of the trailer when the trailer is hitched to the tractor. The optical coupler has a rotating shaft that may include pins that physically interact with the kingpin and/or may include a magnet that magnetically attaches to the kingpin. A clearance and cleaning block may be positioned on the spring plate to interact with a bottom surface of a kingpin of the trailer during hitching of the trailer to the tractor. A LIDAR attached to the tractor may detect a front end of the trailer to determine the trailer angle relative to the tractor.

    Motor stall and trailer lift
    9.
    发明授权

    公开(公告)号:US11787486B2

    公开(公告)日:2023-10-17

    申请号:US17848152

    申请日:2022-06-23

    CPC classification number: B62D49/007 B62D53/0821 B62D53/12

    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.

    SYSTEMS AND METHODS FOR DETERMINING AN ARTICULATED TRAILER ANGLE

    公开(公告)号:US20220413157A1

    公开(公告)日:2022-12-29

    申请号:US17848188

    申请日:2022-06-23

    Abstract: Systems and methods determine an angle of an articulated trailer relative to a tractor that the trailer is hitched to. An optical encoder is positioned beneath a fifth-wheel of a tractor to couples with a kingpin of the trailer when the trailer is hitched to the tractor. The optical coupler has a rotating shaft that may include pins that physically interact with the kingpin and/or may include a magnet that magnetically attaches to the kingpin. A clearance and cleaning block may be positioned on the spring plate to interact with a bottom surface of a kingpin of the trailer during hitching of the trailer to the tractor. A LIDAR attached to the tractor may detect a front end of the trailer to determine the trailer angle relative to the tractor.

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