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公开(公告)号：US11884305B2
公开(公告)日：2024-01-30
申请号：US17057560
申请日：2019-04-11
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Kenta Ikenori
IPC: B60W60/00 , B60Q9/00 , B60T7/04 , B60T7/06 , B60T7/12 , B60T13/74 , B60T17/22 , G05D1/00 , A01B69/04 , B60T11/04
CPC classification number: B60W60/0051 , B60Q9/00 , B60T7/042 , B60T7/06 , B60T7/12 , B60T13/741 , B60T17/221 , G05D1/0061 , A01B69/008 , B60T11/04 , B60T2220/04 , B60T2270/406 , G05D2201/0201
Abstract: The present invention makes it possible to avoid the risk of a brake operation system for emergency stopping not operating normally during autonomous travel of a work vehicle. A work vehicle is provided with: a foot brake for braking left and right rear wheels; an autonomous travel unit that enables autonomous travel of the vehicle; and an electric actuator for switching the foot brake between a braking state and a release state. The autonomous travel unit comprises a control unit for controlling the operation of the electric actuator. When an autonomous travel mode is selected by human operation of a mode selection unit, the control unit performs operation verification processing in which it is verified by operation control of the electric actuator whether the foot brake is operating normally, and when it is verified that the foot brake is operating normally in the operation verification processing, said control unit transitions to a completed operation verification state and allows the travel mode to transition from a manual travel mode to the autonomous travel mode.
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公开(公告)号：US20210362718A1
公开(公告)日：2021-11-25
申请号：US17057118
申请日：2019-04-11
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Kenta Ikenori
Abstract: This work vehicle is provided with an emergency brake function for quickly bringing said work vehicle to an emergency stop when an abnormality has occurred inside of the vehicle. The work vehicle comprises: a foot brake for braking left and right rear wheels; an autonomous travel unit that enables autonomous travel of the vehicle; and an electric actuator for switching the foot brake between a braking state and a release state. The autonomous travel unit comprises a control unit that controls the operation of the electric actuator. When in an autonomous travel mode, the control unit controls the operation of the electric actuator and switches the foot brake from the release state to the braking state when an abnormality is detected inside of the vehicle on the basis of detection information from a vehicle state detection device for detecting the state of each part of the vehicle, or when an emergency stop command is acquired from a wireless communication device set so as to be capable of wireless communication with the autonomous travel unit.
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公开(公告)号：US20210197866A1
公开(公告)日：2021-07-01
申请号：US17057560
申请日：2019-04-11
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Kenta Ikenori
Abstract: The present invention makes it possible to avoid the risk of a brake operation system for emergency stopping not operating normally during autonomous travel of a work vehicle. A work vehicle is provided with: a foot brake for braking left and right rear wheels; an autonomous travel unit that enables autonomous travel of the vehicle; and an electric actuator for switching the foot brake between a braking state and a release state. The autonomous travel unit comprises a control unit for controlling the operation of the electric actuator. When an autonomous travel mode is selected by human operation of a mode selection unit, the control unit performs operation verification processing in which it is verified by operation control of the electric actuator whether the foot brake is operating normally, and when it is verified that the foot brake is operating normally in the operation verification processing, said control unit transitions to a completed operation verification state and allows the travel mode to transition from a manual travel mode to the autonomous travel mode.
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