STROLLER AND OPERATION METHOD THEREOF

    公开(公告)号:US20210229729A1

    公开(公告)日:2021-07-29

    申请号:US17159971

    申请日:2021-01-27

    Abstract: A stroller can include a body having a pair of driving wheels mounted to left and right sides thereof; a motor configured to rotate the pair of driving wheels; a frame comprising a lower part connected to the body, the frame extending upwards from the lower part; a handle connected to the frame; a sensor unit including a force detection sensor configured to detect force applied to the handle, a touch sensor configured to detect whether the handle is being grasped, and a wheel sensor configured to detect rotation of the pair of driving wheels; and a controller configured to calibrate the force detection sensor based on data detected by the touch sensor and the wheel sensor.

    MODE SWITCHING SYSTEM AND EXERCISE BIKE COMPRISING THE SAME

    公开(公告)号:US20250010137A1

    公开(公告)日:2025-01-09

    申请号:US18707304

    申请日:2023-05-18

    Abstract: Disclosed herein are a mode switching system and an exercise bike comprising the same that switches a non-freewheel mode and a freewheel mode automatically, ensuring improvement in user convenience. The exercise bike comprise a step motor, a first limit sensor sensing a first part of the face gear and outputting a first sensing signal, a second limit sensor sensing a second part of the face gear and outputting a second sensing signal, and a controller determining a current power transfer mode by using the first sensing signal and the second sensing signal, and rotating the step motor forward or reversely, based on the current power transfer mode, to switch the power transfer mode to the non-freewheel mode or the freewheel mode, in a case where a mode switching signal is input.

    CART AND METHOD FOR OPERATING THE SAME

    公开(公告)号:US20210229721A1

    公开(公告)日:2021-07-29

    申请号:US17159864

    申请日:2021-01-27

    Abstract: A cart can include a body having driving wheels mounted to left and right sides thereof; a motor configured to rotate the driving wheels; a frame comprising a lower part connected to the body, the frame extending upwards from the lower part; a handle connected to the frame; a sensor unit including a tilt sensor configured to detect a tilt of the body, and a touch sensor configured to detect whether the handle is grasped; and a controller configured to in response to determining that the handle is not grasped based on data detected by the touch sensor, determine whether the cart is located on a slope based on data detected by the tilt sensor, change a control parameter of the motor based on whether the cart is located on the slope and perform a braking operation in different ways based on whether the motor is rotating.

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