Seed Drill Headland Lifting for Precise Boundary Seeding
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Solution Overview
Problem
Existing seed drilling methods result in inadequate seeding due to the seed drill's lifting position being dependent on factors like hydraulic flow and driving speed, leading to inconsistent sowing quality.
Innovation Solution
A method and device where the seed drill's pre-tool and seeding tool are raised or lowered precisely at the headland boundary using a computing unit and displacement sensor, independent of driving speed or hydraulic power, with independent hydraulic control for each tool, and optional depth sensing for accurate seed placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seed drill is raised using conventional hydraulic control, then the lifting operation can be performed, but the lifting position becomes inconsistent due to dependence on hydraulic flow and driving speed
Solution Approach 1:
The patent replaces the conventional hydraulic control system with an electronic control system that uses sensors (GPS, proximity sensors) and a control unit to determine when to raise the seed drill. This substitution eliminates the inconsistency caused by hydraulic flow variations and driving speed changes, as the electronic system directly measures position and triggers lifting at the precise headland boundary regardless of hydraulic conditions.
Solution Approach 2:
The system continuously monitors the position of the seed drill relative to the headland boundary using GPS and proximity sensors, and provides feedback to the control unit. When the sensors detect that the seed drill has reached the headland boundary, the control unit automatically triggers the lifting operation. This closed-loop feedback ensures accurate positioning and consistent sowing quality.
2Ease of operation
If the seed drill is raised early or late relative to the headland boundary, then hydraulic response time is accommodated, but seed placement precision deteriorates
Solution Approach 1:
The system performs preliminary detection of the headland boundary approach using GPS and proximity sensors well before the actual lifting is needed. The control unit calculates the required lifting time based on current driving speed and hydraulic response characteristics, and triggers the lifting operation at the optimal moment. This preliminary action ensures that the seed drill is raised precisely at the headland boundary, maintaining seed placement precision while accommodating hydraulic response time.
3Measurement precision
If independent control of pre-tool and seed drill lifting is implemented, then positioning accuracy at headland boundary is improved, but device complexity increases
Solution Approach 1:
The patent divides the lifting control into two independent, controllable segments: the pre-tool lifting and the seed drill lifting. Each can be controlled separately by the electronic control system, allowing precise positioning of each component at the headland boundary. This segmentation enables accurate headland boundary detection and response while managing system complexity through modular electronic control rather than complex mechanical linkages.
Data Source
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AI summary
The invention relates to a method for sowing using a seed drill (1) with a pre-tool (14, 15) and a seeding tool (9, 10), the method comprising the process steps: - preparing a soil (16) using the pre-tool (14, 15); - introducing seed into the soil (16) using the seeding tool (9, 10); - successively raising the pre-tool (14, 15) and the seeding tool (9, 10).Furthermore, it is provided that when crossing the headland boundary (24) from the working area (22) into the headland (23), a control command to raise the front tool (14, 15) is given by means of a computing unit (20), and that the distance traveled by the seed drill (1) since the control command to raise the front tool (14, 15) is recorded by means of a displacement sensor (21), whereby a control command to raise the seed tool (9, 10) is given by means of the computing unit (20) when a defined distance has been traveled since the control command to raise the front tool (14, 15).