Work vehicle and automatic stop system of work vehicle

Patent metadata

Field	Value
Publication number	US-2018282973-A1
Application number	US-201715810216-A
Country	US
Kind code	A1
Filing date	Nov 13, 2017
Priority date	Mar 28, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A work vehicle according to an embodiment includes: (i) a travelling vehicle body that includes a power source to a work part and a travel part; (ii) a communication unit that is able to transmit and receive signals to and from a portable communication terminal; and (iii) a control unit that is able to control the travel part on the basis of a signal transmitted from the portable communication terminal and received by the communication unit. A plurality of communication systems is provided between the communication unit and the portable communication terminal. The communication systems include a first communication system that is able to transmit a first signal from a portable communication terminal, and a second communication system that has a smaller communication area than that of the first communication system and is able to receive a second signal indicating that the portable communication terminal exists in a predetermined area.

First claim

What is claimed is:

1 . A work vehicle comprising:
a travelling vehicle body that includes a power source to a work part and a travel part; a communication unit that is able to transmit and receive signals to and from a portable communication terminal; and a control unit that is able to control the travel part based on a signal transmitted from the portable communication terminal and received by the communication unit, wherein a plurality of communication systems is provided between the communication unit and the portable communication terminal, and the plurality of communication system includes:
a first communication system that is able to transmit a first signal from the portable communication terminal; and
a second communication system that has a smaller communication area than that of the first communication system and is able to receive a second signal, the second signal indicating that the portable communication terminal exists in a predetermined area.

2 . The work vehicle according to claim 1 , wherein
a short-distance radio communication standard is employed for the second communication system, and the control unit stops a travel of the travelling vehicle body when receiving the second signal during the travel of the travelling vehicle body.

3 . The work vehicle according to claim 2 , wherein
the control unit stops a drive of a Power-Take-Off (PTO) shaft that extracts a power to the work part from the power source, when receiving the second signal.

4 . The work vehicle according to claim 2 , wherein
a communication standard, which has a larger communication area than that of the short-distance radio communication standard, is employed for the first communication system, and the control unit stops the travel of the travelling vehicle body when receiving the first signal during the travel of the travelling vehicle body.

5 . The work vehicle according to claim 3 , wherein
a communication standard, which has a larger communication area than that of the short-distance radio communication standard, is employed for the first communication system, and the control unit stops the travel of the travelling vehicle body when receiving the first signal during the travel of the travelling vehicle body.

6 . The work vehicle according to claim 4 , wherein the control unit stops a drive of a PTO shaft that extracts a power to the work part from the power source, when receiving the first signal.

7 . The work vehicle according to claim 5 , wherein the control unit stops a drive of the PTO shaft that extracts a power to the work part from the power source, when receiving the first signal.

8 . Automatic stop system of a work vehicle, the system comprising:
a work vehicle that includes a travel part; a portable communication terminal; a communication unit that is able to transmit and receive signals to and from the portable communication terminal via a plurality of communication systems; and a travel stopping unit that stops a travel of the work vehicle based on a signal, the signal being transmitted from the portable communication terminal and being received by the communication unit, wherein the plurality of communication systems includes:
a first communication system that is able to transmit a first signal from the portable communication terminal to the work vehicle, the first signal being for stopping a travel of the work vehicle; and
a second communication system that has a smaller communication area than that of the first communication system and is able to receive a second signal, the second signal indicating that the portable communication terminal exists in a predetermined area.

9 . A work vehicle comprising:
a travelling vehicle body that includes a power source to a work part and a travel part; a communication unit that is able to transmit and receive signals to and from a portable communication terminal so as to receive a first signal based on a remote operation of the portable communication terminal, and to receive a second signal indicating that the portable communication terminal exists in a predetermined area; and a control unit that is able to control the travel part based on one of the first and second signals transmitted from the portable communication terminal and received by the communication unit.

10 . An automatic stop system of a work vehicle, the system comprising:
a travelling vehicle body that includes a power source to a work part and a travel part; a portable communication terminal; a communication unit that is able to transmit and receive signals to and from the portable communication terminal; and a control unit that includes a travel stopping unit, the travel stopping unit being able to control the travel part based on a signal transmitted from the portable communication terminal and received by the communication unit, performing a control for stopping the travelling vehicle body based on a first signal based on a remote operation of the portable communication terminal, and performing a control for stopping the travelling vehicle body based on a reception of a second signal indicating that the portable communication terminal exists in a predetermined area.

Assignees

• Iseki Agricult Mach

Inventors

• Ono Koki

Classifications

• B60T7/22

  initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle {, or by means of contactless obstacle detectors mounted on the vehicle} · CPC title

• G08G1/166

  for active traffic, e.g. moving vehicles, pedestrians, bikes · CPC title

• E02F9/205 Primary

  Remotely operated machines, e.g. unmanned vehicles (E02F3/8866 takes precedence) · CPC title

• G05D2201/0202

  Physics · mapped topic

• G05D1/0022

  characterised by the communication link (data switching networks in general H04L12/00) · CPC title