Field Region Registration Using Turn-Based Corner Offset
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Solution Overview
Problem
Existing region registration systems may incorrectly register positions that do not exist within a field as part of the region, especially when dealing with intersections of straight paths and agricultural work areas, leading to inaccurate boundary definitions.
Innovation Solution
A region registration system that includes a positioning antenna, position registration unit, reference-point specification unit, direction specification unit, candidate-point registration unit, and region registration unit, which causes a work vehicle to travel along the outer periphery of a region, offsetting corner points based on turning directions to ensure accurate registration of corners and edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the work vehicle travels along the outer periphery of the region and registers positions based on actual travel, then the region registration reflects actual work areas, but positions that do not exist inside the field may be incorrectly registered as part of the region
Solution Approach 1:
The system performs preliminary offset calculation of the antenna position by the vehicle width before final region registration. By pre-calculating the corner candidate points based on the turning direction and offset amount, the system ensures that only positions that actually exist within the field boundaries are registered, preventing registration of non-existent positions while maintaining accurate corner detection
Solution Approach 2:
The patent introduces an intermediary processing step between position detection and region registration. The corner candidate point generation unit acts as an intermediary that filters and adjusts the raw position data by offsetting the antenna position and validating against turning direction, thereby resolving the contradiction between reliability and measurement precision
2Ease of operation
If corner points are registered based on antenna position without offset correction, then the registration process is simple, but the registered region does not accurately represent the actual work area
Solution Approach 1:
The system performs automatic offset correction and corner candidate point generation without requiring manual intervention. The control unit automatically calculates the offset amount based on vehicle width, determines turning direction from position data, and generates corrected corner points, maintaining ease of operation while achieving high precision region boundary definition
Solution Approach 2:
The patent dynamically adjusts the position parameters by applying an offset equal to the vehicle width to the antenna position. This parameter change transforms the raw antenna coordinates into accurate corner points that reflect the actual work area boundaries, achieving high precision without complicating the operation
Data Source
AI summary
This region registration system is provided with a positioning antenna, a position acquisition unit, a reference-point specification unit, a direction specification unit, a candidate-point registration unit, and a region registration unit, and acquires an antenna position as a measurement point. The reference-point specification unit specifies a corner antenna reference point. The direction specification unit specifies a turning direction of a rice seedling transplanter that has passed the corner antenna reference point. The candidate-point registration unit biases the corner antenna reference point to a position forward of the rice seedling transplanter at the time of measuring said corner antenna reference point, and at the same time, registers, as a corner candidate point, a position biased toward either side in the width direction of said rice seedling transplanter in accordance with the turning direction specified by the direction specification unit. The region registration unit is capable of registering a region that encompasses a corner candidate point.