Stalk Diameter Sensing via Laterally Movable Stripper Plates
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Solution Overview
Problem
Current agricultural harvesting systems lack an efficient method to accurately sense the diameter of plant stalks during the harvesting process, which is crucial for determining throughput and optimizing harvesting operations.
Innovation Solution
A system comprising a row harvesting unit with a frame defining an elongate gap, laterally movable stripper plates, and sensors to generate signals representative of the stalk diameter, processed by a unit to derive and store diameter values for agronomic purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional torque sensing methods are used to determine throughput, then mass or volume information per land area unit can be obtained, but stalk diameter measurement precision is insufficient
Solution Approach 1:
The patent introduces an intermediary laterally movable member that contacts the stalk and translates its position into measurable signals. This member acts as a mediator between the stalk diameter and the sensor, enabling precise measurement without requiring complex direct sensing mechanisms. The movable member converts the physical dimension (diameter) into positional information that can be easily captured by sensors.
Solution Approach 2:
The patent replaces traditional mechanical torque sensing mechanisms with a sensor-based system that detects the position of a laterally movable member. Instead of measuring torque mechanically, the system uses sensors to detect positional changes, substituting mechanical measurement with optical or electronic sensing, thereby improving precision while reducing mechanical complexity.
2Loss of information
If no stalk diameter sensing is implemented, then the harvesting system operates with existing throughput methods, but valuable agronomic data for fertilizer application and seed companies is lost
Solution Approach 1:
The sensing system is designed to serve multiple functions: it measures stalk diameter for throughput determination, generates agronomic data for fertilizer application recommendations, and provides valuable information to seed and chemical companies. This multi-functional approach maximizes the value of the collected data while using a single integrated sensing system, reducing the need for separate measurement devices.
Solution Approach 2:
The system automatically collects, processes, and stores stalk diameter data during normal harvesting operations without requiring additional manual intervention. The sensor system operates continuously, self-recording measurements and generating agronomic reports, thereby preserving information while maintaining operational simplicity through automation.
3Measurement precision
If stalk diameter is measured with high precision, then throughput determination and agronomic mapping are improved, but the sensing system requires more complex components and signal processing
Solution Approach 1:
The patent divides the measurement function into separate components: a laterally movable member that contacts the stalk, sensors that detect the member's position, and a processing system that converts positional data into diameter measurements. This segmentation allows each component to be optimized independently, achieving high precision measurement while managing system complexity through functional decomposition.
Data Source
AI summary
A system for sensing the diameter of stalks of plants senses the position of a laterally movable member arranged to contact a stalk of a plant located within an elongate gap in a row harvesting unit to determine and map the stalk diameters.