Planting Machine Control for Seed-Referenced Material Placement
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Solution Overview
Problem
Current agricultural systems apply materials such as fertilizers and pesticides in a continuous manner, leading to inefficiencies and waste, as material is often applied between seeds or plants where it is not needed.
Innovation Solution
The system identifies seed locations in a field and controls the application of materials based on these references, using sensors to detect the placement of the material and generate control signals to adjust the application accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If material is applied in a continuous manner, then the application process is simple and continuous, but material is wasted and applied in unnecessary locations
Solution Approach 1:
The continuous material application is segmented into discrete applications at specific seed locations. The system divides the field into individual seed zones and applies material only at these segmented locations rather than continuously across the entire field, reducing material waste while maintaining manageable system complexity through modular sensor and application unit design.
Solution Approach 2:
The system applies material with local quality by targeting specific seed locations identified by sensors. Each location receives material based on its specific needs (presence of a seed), creating non-uniform local application patterns that reduce overall material waste while the global system remains coordinated through central control.
2Productivity
If material is applied precisely at seed locations, then material efficiency improves, but the system complexity increases
Solution Approach 1:
The system performs preliminary detection of seed locations using sensors before material application occurs. By identifying and recording seed positions in advance, the control system can plan and execute precise material application at these predetermined locations, improving application efficiency while the control complexity is managed through sequential processing of detection and application phases.
Solution Approach 2:
The system uses feedback from sensors that detect seed locations to control material application. The sensor signals provide real-time feedback about where seeds are present, and the control system uses this feedback to activate or deactivate application at each location, achieving high productivity through precision while managing complexity through closed-loop control.
3Measurement precision
If sensors are used to detect material placement, then application precision improves, but the system complexity and cost increase
Solution Approach 1:
The sensors are designed to self-service by detecting both seed locations and material placement automatically without requiring complex external verification systems. The same sensor infrastructure serves multiple functions (detecting seeds, detecting material application), reducing overall system complexity while maintaining high measurement precision for material placement.
Data Source
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AI summary
A method of controlling an agricultural work machine (100) is disclosed. The method comprising: identifying a reference position on an agricultural surface (138); applying material based on the identified reference position; sensing a characteristic of the material; generating a material sensor signal indicative of the characteristic; identifying a location of the applied material based on the material sensor signal; generating a processing system output signal based on the location of the applied material and based on the reference position; identifying an action based on the processing system output signal; and generating a control signal to perform the identified action.