Combine Reaping Line Intersections for Unworked Land Mapping
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Solution Overview
Problem
Existing contour shape calculation systems for unworked sites in fields require numerous steps and point identification for calculating the contour shape, making the process complex and inefficient.
Innovation Solution
A combine and unworked site calculation method that generates an unworked site by round reaping, utilizing a positioning unit, straight line generation unit, and unworked site generation unit to calculate intersection points and form polygons, allowing for efficient determination of unworked areas with reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference point is set and measurement positions are selected based on the reference point to calculate contour shape, then the contour shape can be calculated, but the process becomes complex and requires many steps
Solution Approach 1:
The patent extracts the essential geometric information needed for contour calculation by directly using intersection points of work straight lines, removing the unnecessary intermediate steps of setting reference points and selecting measurement positions. This extraction approach maintains calculation accuracy while significantly simplifying the process.
Solution Approach 2:
Instead of building the contour shape from scattered measurement positions radiating from a reference point, the patent inverts the approach by deriving the contour directly from the intersections of work straight lines. This inversion eliminates the need for reference point selection and creates a more direct calculation path.
2Manufacturing precision
If multiple measurement positions are identified and connected with lines to calculate contour shape, then the work target area can be defined, but the number of steps increases
Solution Approach 1:
The patent performs preliminary action by pre-defining work straight lines based on harvesting direction and width before contour calculation. These pre-established straight lines serve as the direct basis for generating contour points through intersection calculations, eliminating the need for subsequent measurement position selection and connection steps.
Solution Approach 2:
The patent segments the contour calculation process into independent work straight line intersections, where each intersection point can be calculated separately and systematically. This segmentation allows for efficient, modular computation that reduces overall calculation time while maintaining precision.
3Measurement precision
If reference point and measurement position selection is performed to calculate unworked site contour, then the contour can be obtained, but the operation becomes complicated
Solution Approach 1:
The system performs self-service by automatically generating work straight lines and calculating their intersections to define the contour, without requiring manual reference point selection or measurement position identification. This automation maintains measurement precision while dramatically improving ease of operation.
Solution Approach 2:
The work straight lines serve multiple functions: they define the harvesting pattern, determine work area boundaries, and directly generate contour points through intersections. This multi-functionality eliminates the need for separate reference point and measurement position procedures, simplifying operation while maintaining accuracy.
Data Source
AI summary
A combine generates an unworked land of an agricultural field through round reaping by which a reaping work is carried out while the vehicle body repeats straight travel and turning. The combine is provided with: a positioning unit that obtains a measurement point indicating a position of a vehicle body; a straight line generating unit that generates a work straight line on the basis of measurement points obtained between a work starting position and a work finishing position of one reaping work; and an unworked land generating unit that calculates, every time the work straight line is generated, an intersection point between the work straight lines intersecting each other, and that, when at least three work straight lines intersect to constitute a closed area, generates an unworked land in a polygonal shape with at least three intersection points being vertices thereof.