Autonomous Machine Boundary Adjustment via Terrain Sensing
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Solution Overview
Problem
Autonomously or semi-autonomously operated machines struggle to maintain designated boundaries near crests, such as ridges or slopes, due to terrain changes not accounted for in pre-existing maps, leading to potential operational hazards.
Innovation Solution
A system that includes a change in terrain sensor to detect and signal changes adjacent the machine, with a controller modifying the machine's path if the terrain change exceeds a threshold, using a combination of sensors like implement load sensors and position sensing systems to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-existing maps with designated paths and boundaries are used for autonomous machine operation, then the machine can operate with consistent productivity, but the system cannot account for terrain changes that occur after map development
Solution Approach 1:
The system continuously monitors terrain using sensors (LIDAR, cameras, implement load sensors) and feeds this information back to the controller, which compares actual terrain conditions against the pre-existing map to detect changes and adjust the boundary accordingly
Solution Approach 2:
The system performs preliminary terrain assessment by comparing real-time sensor data with pre-stored map information before the machine reaches potential hazard zones, allowing proactive boundary adjustment rather than reactive response
2Productivity
If the machine operates close to crests using pre-defined boundaries, then operational efficiency is maintained, but safety is compromised due to un detected terrain changes
Solution Approach 1:
The system establishes a safety buffer zone by dynamically adjusting the operational boundary inward from the crest line when terrain changes are detected, creating a protective margin that prevents the machine from operating too close to potential hazards
Solution Approach 2:
The controller acts as an intermediary between the pre-defined map boundaries and actual terrain conditions, using sensor data as mediation to determine the safe operational boundary that balances efficiency and safety
3Device complexity
If traditional position determination systems are used, then the system is simple to implement, but it cannot detect terrain changes adjacent to the machine
Solution Approach 1:
The system combines multiple sensing modalities (LIDAR for distance measurement, cameras for visual terrain assessment, implement load sensors for contact-based terrain feedback) with the existing position determination system to create a comprehensive terrain monitoring capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the machine to adjust its path dynamically, preventing unintended proximity to crests and enhancing safety and efficiency in autonomous or semi-autonomous operations by accurately accounting for terrain changes.
Implementation Method 1
a change in terrain sensor system configured to sense a change in terrain generally adjacent the machine and provide a change in terrain signal indicative of the change in terrain
Data Source
AI summary
A system for modifying a boundary of operation of a machine has a change in terrain sensor system. A controller determines a change in terrain based at least in part upon a change in terrain signal. If the change in terrain exceeds a threshold, the controller modifies the boundary of operation of the machine. A method is also provided.