Working Vehicle Steering Control for Rearward Auto Guidance
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Solution Overview
Problem
Agricultural working machines face difficulties in performing automatic steering during rearward traveling, as operators struggle to confirm and maintain the necessary conditions for automatic steering, leading to inefficiencies and increased operator workload.
Innovation Solution
The implementation of a working vehicle equipped with a reference registration controller, automatic steering controller, display, and notifier that allows for easy switching between manual and automatic steering modes, provides guidance screens and notifications to ensure accurate alignment and operation during both forward and rearward traveling, using sound and light cues to indicate the satisfaction of steering conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic steering is implemented during rearward traveling, then automation capability is improved, but operator ability to confirm steering information deteriorates
Solution Approach 1:
The patent introduces a notifier as an intermediary device that converts steering condition information into audible notifications. This mediator bridges the gap between the automatic steering system and the operator, allowing information to be transmitted without requiring the operator's visual attention, thus resolving the contradiction between automation and information confirmation.
Solution Approach 2:
The patent transitions the information transmission channel from the visual dimension (display screens) to the auditory dimension (speaker notifications). This dimensional change allows the operator to receive steering information without diverting visual attention from the work environment, enabling automatic steering during rearward traveling while maintaining situational awareness.
2Loss of information
If display is used to show steering information, then information presentation is improved, but operator workload increases during rearward traveling
Solution Approach 1:
The notifier acts as an intermediary that converts visual information into audible form, reducing the operator's cognitive and visual workload while maintaining complete information presentation. This allows the operator to monitor steering conditions without the burden of continuously viewing displays during rearward traveling.
3Ease of operation
If manual steering is used during rearward traveling, then operator control is maintained, but steering precision and efficiency deteriorate
Solution Approach 1:
The system provides real-time feedback to the operator through audible notifications about steering condition satisfaction. This feedback mechanism enables the operator to maintain manual control while receiving precise guidance information, allowing for both operator control and steering precision during rearward traveling.
Data Source
AI summary
A working vehicle includes a vehicle body capable of traveling either by either manual steering with a steering wheel or by automatic steering with the steering wheel, a reference registration controller configured or programmed to register a traveling reference line based on a position of the vehicle body caused to travel by the manual steering, an automatic steering controller configured or programmed to perform control by the automatic steering on a set scheduled traveling line based on the traveling reference line, a display to display information about the automatic steering when forward traveling by the automatic steering is to be performed, and a notifier to issue a notification of the information about the automatic steering aside from the information displayed on the display when rearward traveling by the automatic steering is to be performed.