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    Robot lawn mower bumper system
    32.
    发明申请
    Robot lawn mower bumper system 审中-公开

    公开(公告)号：US20180184583A1

    公开(公告)日：2018-07-05

    申请号：US15395865

    申请日：2016-12-30

    Applicant: iRobot Corporation

    Inventor： Russell Walter Morin ,  Travis Pierce ,  Chris Bradley

    IPC: A01D34/00 ,  B25J5/00

    CPC classification number: A01D34/008 ,  G05D2201/0208

    Abstract: In one aspect, a mobile robot includes a chassis, a shell moveably mounted on the chassis by a shell suspension system, and a sensor assembly configured to sense a distance and a direction of shell movement relative to the chassis. The sensor assembly includes a magnet disposed on an underside of the shell. The sensor assembly further includes three or more Hall effect sensors disposed on the chassis in a triangular pattern at fixed distances such that the three or more Hall effect sensors are positioned beneath the magnet when no force is applied to the shell, wherein relative motion between the magnet and the Hall effect sensors causes the sensors to produce differing output signals. The mobile robot also includes a controller configured to receive output signals from the Hall effect sensors and to determine a distance and a direction of movement of the shell relative to the chassis.

    Control apparatus for autonomously navigating utility vehicle
    36.
    发明授权
    Control apparatus for autonomously navigating utility vehicle 有权

    公开(公告)号：US09874876B2

    公开(公告)日：2018-01-23

    申请号：US15016176

    申请日：2016-02-04

    Applicant: Honda Motor Co., Ltd.

    Inventor： Hideaki Shimamura

    IPC: G05D1/00 ,  G05D1/02 ,  A01D34/00

    CPC classification number: G05D1/0265 ,  A01D34/008 ,  G05D1/0219 ,  G05D2201/0208

    Abstract: In an apparatus for controlling operation of an autonomously navigating utility vehicle travelling about a working area delineated by a boundary wire, the working area including a narrow area and a broad area, there are provided with a magnetic field strength detector, a travel controlling unit controlling the vehicle to turn and travel straight forward every time the vehicle reaches the boundary wire based on the magnetic field strength, and a narrow area discriminating unit discriminating that the vehicle travels in the narrow area when the magnetic field strength is kept to be greater than a threshold value predefined based on a minimum value of the magnetic field strength in the narrow area from a first turn to a second turn of the vehicle, or for a predetermined time period after the first turn.

    CONTROL OF DOWNHILL MOVEMENT FOR AN AUTONOMOUS GUIDED VEHICLE
    37.
    发明申请
    CONTROL OF DOWNHILL MOVEMENT FOR AN AUTONOMOUS GUIDED VEHICLE 审中-公开

    公开(公告)号：US20170351260A1

    公开(公告)日：2017-12-07

    申请号：US15538400

    申请日：2015-11-26

    Applicant: HUSQVARNA AB

    Inventor： Mikael Willgert ,  Mattias Kamfors

    IPC: G05D1/02 ,  A01D34/00

    CPC classification number: G05D1/027 ,  A01D34/008 ,  G05D2201/0208

    Abstract: A robotic work tool system (200) comprising a robotic work tool (100) comprising a collision detection sensor (190), said collision detection sensor (190) comprising a first sensor element (191) and a plurality of second sensor elements (192), wherein said first sensor element (191) is movably arranged with respect to said plurality of second sensor elements (192), wherein said robotic work tool (100) is configured to detect that said first sensor element (191) is proximate a peripheral second sensor element (192) and in response thereto determine that a collision has been detected, and detect that said first sensor element (191) is not proximate any peripheral second sensor element (192) and in response thereto determine that a lift has been detected.

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