Centrifugal Spreader GPS Control for Water Buffer Compliance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Farmers face challenges in ensuring precise compliance with legal distance requirements from surface waters when applying fertilizers, leading to potential environmental damage and harvest losses due to uneven application and reliance on manual visual inspection.
Innovation Solution
A method utilizing a centrifugal spreader with GPS navigation to automatically adjust fertilizer application based on real-time location data, switching to edge spreading or reducing application when the minimum distance to water bodies is reached, ensuring precise compliance with legal distance specifications through computer-controlled operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If farmers use manual visual inspection to determine fertilizer application distance from water bodies, then the operation is simple and requires minimal equipment, but the precision of maintaining legal distance requirements deteriorates leading to potential contamination or unnecessary crop losses
Solution Approach 1:
The patent replaces manual visual inspection with GPS satellite navigation technology to determine the vehicle's position and calculate distance to water bodies. This substitution of mechanical/manual methods with electronic positioning systems achieves precise distance measurement (maintaining legal requirements) without significantly increasing operational complexity, as the GPS system integrates seamlessly with modern agricultural vehicles.
Solution Approach 2:
The patent introduces a computer unit as an intermediary between the GPS positioning system and the fertilizer spreading mechanism. This computer unit processes location data, calculates distance to water bodies, and automatically controls the spreading device to maintain legal buffer zones. The intermediary automates the decision-making process, eliminating manual judgment errors while keeping the system relatively simple through integrated control.
2Object-affected harmful factors
If farmers apply fertilizer uniformly across the entire field, then the application process is simple and fast, but the environmental harm increases due to potential runoff into water bodies
Solution Approach 1:
The patent implements variable fertilizer application rates based on location. The system applies full fertilizer rates in areas far from water bodies while automatically reducing or stopping application near water bodies (within legal buffer zones). This local differentiation of application quality prevents environmental harm from runoff while maintaining high productivity through automated, location-based control rather than uniform application.
Solution Approach 2:
The patent makes the fertilizer application rate dynamic rather than static. The spreading device automatically adjusts its operation based on real-time GPS position data and calculated distance to water bodies. The system transitions between different application modes (full rate, reduced rate, or stopped) dynamically as the vehicle moves across the field, preventing environmental harm without requiring manual intervention and maintaining overall application efficiency.
3Reliability
If farmers maintain a larger buffer zone from water bodies to ensure compliance, then environmental protection is improved, but crop losses increase due to unnecessarily unfertilized field margins
Solution Approach 1:
The patent uses real-time GPS positioning feedback to continuously monitor the vehicle's distance from water bodies. This feedback mechanism allows the system to precisely determine when the vehicle enters or exits the legal buffer zone and automatically adjust fertilizer application accordingly. The feedback-based control ensures reliable compliance with legal requirements while minimizing unnecessary buffer zones, as the system responds accurately to actual position data rather than using fixed, overly conservative margins.
Solution Approach 2:
The patent changes the application rate parameter dynamically based on distance to water bodies. Rather than maintaining a fixed, large buffer zone that causes crop losses, the system uses parameter changes (application rate adjustment) to achieve compliance. When the vehicle approaches the legal buffer zone boundary, the system modifies the fertilizer flow rate or spreading width parameter to stop application at the precise legal limit, maximizing fertilized area while ensuring compliance reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures environmentally friendly and efficient fertilizer application by preventing nutrient runoff into water bodies, maintaining compliance with legal distance requirements, and reducing manual errors, thus avoiding fines and harvest losses.
Implementation Method 1
Each centrifugal disc has several throwing blades extending outwards from the center of the disc. As the centrifugal discs rotate, the throwing blades capture the fertilizer particles and hurl them across a fan-shaped spreading area.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Method for applying fertilizer to an agricultural field (1) by means of a spreading device assigned to a vehicle and designed as a centrifugal spreader with at least two centrifugal discs, wherein during the application of fertilizer location or position data of the vehicle are recorded, in particular by means of a satellite navigation system, and transmitted to a computer unit (2) preferably designed as an on-board computer, wherein location or position data of at least one body of water (3a, 3b) are also stored in the computer unit (2), and wherein when a predetermined distance (a, a1, a2) between the spreading fan of the spreading device and the body of water (3a, 3b) is reached or fallen below, the operation of the spreading device is controlled or regulated by the computer unit (2) in such a way that an adjustment and/or reduction of the application of fertilizer is carried out in order not to pollute the body of water (3a, 3b) with fertilizer.