Spreader Disc Sensor System for Fertilizer Type Verification
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Solution Overview
Problem
Current two-disc spreaders lack a detection system to prevent confusion between different types of spreading discs, leading to potential over- or under-fertilization and environmental damage due to incorrect disc usage, which is not addressed by existing technologies.
Innovation Solution
A sensor system is implemented near each spreading disc to identify the type and direction of rotation, transmitting this information to the operator terminal for comparison with the required disc type and working width, ensuring correct usage through visual feedback and alarm messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If interchangeable spreading discs are used to adapt to different fertilizer types and working widths, then the adaptability of the spreader is improved, but the risk of confusion and incorrect disc usage increases
Solution Approach 1:
The patent implements a sensor system that detects which spreading disc is mounted on the drive shaft and provides feedback signals to the control unit. The control unit compares the detected disc type with the required disc type for the current fertilizer and working width settings, generating alarm messages or blocking operation when mismatches are detected. This feedback mechanism ensures reliable operation while maintaining interchangeability of discs.
Solution Approach 2:
The patent introduces an intermediary detection system consisting of sensors, evaluation units, and communication interfaces between the spreading discs and the control system. This intermediary layer verifies disc identity and compatibility, preventing direct confusion between different disc types while allowing free interchangeability.
2Device complexity
If manual identification methods like stickers are used to mark disc types, then the device complexity is reduced, but the measurement precision and reliability of disc identification deteriorates
Solution Approach 1:
The patent replaces manual mechanical identification methods (stickers, visual markers) with automated sensor-based detection systems. Sensors such as optical, magnetic, or RFID detectors automatically identify disc types without human intervention, significantly improving identification accuracy while maintaining acceptable system complexity through standardized sensor integration.
Solution Approach 2:
The patent uses sensors to detect physical or electromagnetic characteristics of the spreading discs and creates digital representations of disc identity. These digital copies are then evaluated by the control unit to verify disc compatibility, providing accurate identification without requiring complex physical markers on the discs themselves.
Data Source
AI summary
The spreader has spreader disks of different types for adaptation to different fertilizer types and/or working widths, where the spreader disks are attached to associated drive shafts. An operation terminal is provided for inputting and storing relevant operative data e.g. calendrical data, fertilizer type, spreading amount and working width, for a spreading process. A sensor recognizing the spreader disk type is provided near one of the disks, and supplies a signal, which identifies the spreader disk type and/or rotation direction of the spreader disk, to the operation terminal.