Remote Work Height Control During Automatic Vehicle Travel
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Solution Overview
Problem
In existing automatic travel systems for work vehicles, users face difficulties in accurately adjusting the work device height while the vehicle is in automatic travel mode, as the height display only shows the current height, making it hard to track changes and adjustments without stopping the vehicle.
Innovation Solution
The system includes a work height setting unit, a height detector, a raising and lowering instruction unit, and a control unit that allows for automatic height adjustment, along with a remote operation device displaying the set and adjusted work height, enabling users to visually monitor and adjust the height during automatic travel, and disabling manual adjustments upon termination of the travel mode to prevent unexpected changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work vehicle travels automatically and the user operates the work machine height adjustment unit on the remote operation device, then the work vehicle can continue traveling without stopping, but the user cannot visually track the height changes and adjustment amounts in real-time
Solution Approach 1:
The display device provides real-time feedback by showing the current height, adjusted height, and height adjustment amount during automatic travel. This allows the user to visually track height changes and make informed adjustments without stopping the vehicle, resolving the information loss problem while maintaining continuous operation
Solution Approach 2:
The remote operation device acts as an intermediary between the user and the work vehicle's height control system. It transmits adjustment commands wirelessly and displays real-time height information, enabling the user to control height adjustments during automatic travel without being physically present in the vehicle
2Ease of operation
If the work vehicle stops to allow the user to operate the raising and lowering switch on the work vehicle, then the user can directly control the height, but the automatic travel process is interrupted
Solution Approach 1:
The remote operation device serves as a wireless intermediary that transmits height adjustment commands to the work vehicle. This allows the user to control the raising and lowering operations from a distance without needing to stop the vehicle or be physically present in the operator's seat
Solution Approach 2:
The patent replaces the mechanical control system (raising and lowering switch requiring physical presence) with a wireless remote control system. The user can operate the height adjustment from outside the vehicle using the remote operation device, eliminating the need to stop for direct control
3Adaptability or versatility
If manual adjustment of work height is always enabled, then the user can adjust height at any time, but unexpected height changes may occur after automatic travel mode is terminated
Solution Approach 1:
The system dynamically changes the state of the work height adjustor based on the travel mode. During automatic travel, manual adjustment is enabled for flexibility. When automatic travel is terminated, the adjustor is automatically disabled to prevent unexpected changes. This dynamic state change resolves the contradiction between flexibility and stability
Solution Approach 2:
The system takes preliminary action by disabling the work height adjustor before unexpected operations can occur. When automatic travel mode is terminated, the system proactively disables manual adjustment to prevent potential unexpected height changes, addressing the reliability concern before it can manifest
Data Source
AI summary
An automatic travel system for a work vehicle allows the work height of a work device to be easily and appropriately adjusted by a remote operation that uses a remote operation device for a work vehicle during automatic travel. The automatic travel system for work vehicles includes an automatic travel unit, and a remote operation device, for a work vehicle. A work vehicle has a work height setting unit, a height detector, a raising and lowering indicator, and a raising and lowering control unit, for a work device. The raising and lowering control unit sets a control target height to a work height on the basis of the indication of the raising and lowering indicator and executes automatic raising and lowering control so that the height position of a work device (6) matches the work height. The remote operation device has a display device that displays remote operation information, and a work height adjustor that allows adjustment of the work height while in automatic travel mode. The display device has a work height display section that displays the work height of the work device, the work height after adjustment, and the height position of the work device.