Combine Harvester Obstacle Detection by Target Route Switching
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Solution Overview
Problem
Conventional work vehicles, such as combine harvesters, face challenges in detecting obstacles in non-work areas or work-completed areas due to the exclusion of certain ranges from detection, leading to inadequate detection of persons or objects.
Innovation Solution
A detection method and program that enables or disables the detection function based on the target route, allowing the work vehicle to appropriately detect targets as obstacles by using a detection unit and setting processing units to manage detection functions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a predetermined range is excluded from the detection target to prevent work objects from being recognized as obstacles, then work objects are not mistakenly detected as obstacles during work operations, but detection targets within the excluded range cannot be appropriately detected as obstacles when traveling in non-work areas or work-completed areas
Solution Approach 1:
The detection function is made dynamic by switching between enabled and disabled states based on the work vehicle's current location relative to the target route. The setting processing unit changes the detection function state according to whether the vehicle is on the target route or outside it, allowing the system to adapt detection behavior to current operational context.
Solution Approach 2:
The detection function's operational state (enabled/disabled) is changed as a parameter based on the vehicle's position. When the work vehicle travels outside the target route, the detection function is enabled to detect obstacles; when on the target route, it is disabled to avoid detecting work objects as obstacles.
2Reliability
If the detection function is continuously enabled to detect all detection targets, then all obstacles can be detected regardless of location, but work objects will be mistakenly recognized as obstacles during work operations
Solution Approach 1:
The detection function transitions from a static continuously-enabled state to a dynamic state that switches between enabled and disabled based on real-time position information. The setting processing unit receives position data and automatically adjusts the detection function state to match the current operational context.
Solution Approach 2:
The system performs preliminary positioning to determine whether the work vehicle is on or outside the target route before activating or deactivating the detection function. This preliminary position check prevents false positive detections by ensuring the detection function is only enabled when actually needed.
3Object-generated harmful factors
If the detection function is continuously disabled to avoid false detections during work, then work objects are not mistakenly detected, but real obstacles in non-work areas cannot be detected
Solution Approach 1:
The detection function is dynamically controlled to switch between disabled state (during work operations on target route) and enabled state (when outside target route). This dynamic control eliminates false positives while maintaining obstacle detection capability when needed.
Solution Approach 2:
The setting processing unit uses feedback from position information to automatically control the detection function state. When position data indicates the vehicle is outside the target route, the detection function is enabled; when on the target route, it is disabled, creating a closed-loop control system.
Data Source
AI summary
A combine harvester includes a detection unit capable of detecting a surrounding detection target, and automatically travels along a target route. A setting processing unit sets the detection function for the detection target to be enabled or disabled based on the target route. The detection processing unit causes the combine harvester to execute predetermined processing on the detection target in accordance with the setting state of the detection function.