Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/256036
Kind Code:
A1
Abstract:
This work vehicle has: a positioning unit (5) for measuring the current position and the current direction of the vehicle body (1) using a satellite positioning system; and an automatic travel control unit (40) for executing automatic travel control based on positioning information from the positioning unit (5). The positioning unit (5) comprises: a plurality of positioning antennas (5A, 5B) provided on the vehicle body; a plurality of positioning units (5C, 5D) for measuring the positions of the positioning antennas (5A, 5B); a calculation unit (5F) for calculating the current position and the current direction of the vehicle body (1) on the basis of positioning information from the positioning units (5C, 5D); and a positioning state determination unit (5F) for determining whether or not the positioning state of the positioning units (5C, 5D) is a high-accuracy positioning state. When at least two positioning units (5C, 5D) are in the high accuracy positioning state, the positioning state determination unit (5F) permits the start of the automatic travel control.
Inventors:
SUZUKI AKIHIRO (JP)
NAKAHATA AKIHIRO (JP)
MIZUKURA YOSHIHARU (JP)
KITANO KEITA (JP)
NAKAHATA AKIHIRO (JP)
MIZUKURA YOSHIHARU (JP)
KITANO KEITA (JP)
Application Number:
PCT/JP2020/023851
Publication Date:
December 24, 2020
Filing Date:
June 17, 2020
Export Citation:
Assignee:
YANMAR POWER TECHNOLOGY CO LTD (JP)
International Classes:
F02D29/02; A01B69/00; G01C21/26; G08G1/00
Domestic Patent References:
| WO2015147111A1 | 2015-10-01 |
Foreign References:
| US20160011597A1 | 2016-01-14 | |||
| JP2016065769A | 2016-04-28 | |||
| JPH01312908A | 1989-12-18 | |||
| JP2018004307A | 2018-01-11 |
Other References:
See also references of EP 3987900A4
Attorney, Agent or Firm:
TANEMURA Kazuyuki (JP)
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