Automatic Work Vehicle Travel with Switchable Obstacle Detection
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Solution Overview
Problem
Existing obstacle detection systems in work vehicles can incorrectly identify non-obstacle targets like dust, leading to reduced work efficiency and compromised safety when the detection function is disabled to avoid false alarms.
Innovation Solution
An automatic traveling system that enables or disables obstacle detection based on predetermined operator conditions, allowing safe and efficient autonomous travel by setting the detection function according to specific criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the obstacle detection function is enabled, then safety is improved, but work efficiency deteriorates due to false detections of non-obstacle targets like dust
Solution Approach 1:
The obstacle detection function is made dynamically controllable through multiple operating modes (disable mode, alert mode, automatic avoidance mode, automatic stop mode) that can be switched based on working conditions. This dynamic adjustment allows the system to optimize between safety and work efficiency by selecting appropriate detection sensitivity levels for different operational contexts.
Solution Approach 2:
The system changes the operational parameters of the obstacle detection function by adjusting detection sensitivity and response thresholds. By modifying these parameters, the system can distinguish between actual obstacles and false targets like dust, thereby maintaining safety while reducing false alarms that impact work efficiency.
2Productivity
If the obstacle detection function is disabled to avoid false alarms, then work efficiency is improved, but safety deteriorates
Solution Approach 1:
Rather than completely disabling the detection function, the system dynamically adjusts its operational state through different modes. The disable mode allows full productivity when conditions permit, while alert mode and automatic avoidance/stop modes provide graduated safety responses, ensuring safety is maintained at an appropriate level without unnecessarily reducing work efficiency.
Solution Approach 2:
The system applies partial detection action through the alert mode, where the detection function operates at a reduced level (providing warnings without automatic intervention). This partial action maintains basic safety monitoring while minimizing disruptions to work efficiency, representing a compromise between full detection and complete disablement.
3Measurement precision
If the detection unit detects all targets including dust, then measurement precision is improved, but work efficiency deteriorates due to false obstacle identification
Solution Approach 1:
The system applies different quality levels of detection response to different types of detected targets. Through multi-mode operation, actual obstacles trigger automatic avoidance or stop responses, while false targets like dust may only trigger alert mode or no response. This local differentiation of detection quality maintains measurement precision while optimizing work efficiency based on target type.
Data Source
AI summary
An automatic traveling system includes a setting processing portion for setting the function of an obstacle sensor that detects a detection target around a work vehicle to be enabled or disabled, and traveling processing portion that, when the function of the obstacle sensor is set to be disabled, enables the automatic traveling if a predetermined condition related to the operator is satisfied, and prohibits the automatic traveling if the predetermined condition related to the operator is not satisfied.