Moisture Sensor Array for Selective Preservative Application
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Solution Overview
Problem
Existing moisture sensing systems for crop bales apply preservatives based on average moisture levels, failing to recognize and address high moisture content issues in a significant portion of the crop, leading to unnecessary spoilage and mold growth.
Innovation Solution
A method using a moisture sensor array and an Electronic Control Unit (ECU) to selectively apply preservatives only to the portion of the bale with moisture content exceeding a set point, adjusting the application rate based on the percentage of crop material above the threshold, ensuring precise application during the baling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If preservative is applied based on average moisture level, then the application process is simple, but high moisture portions of the crop are not identified and treated, leading to spoilage
Solution Approach 1:
The moisture sensor array divides the crop inlet into multiple sensing zones across the entire width, allowing the system to segment the crop into high-moisture and low-moisture portions. This enables targeted preservative application to specific high-moisture areas rather than treating the entire bale uniformly, thus improving reliability without significantly complicating the operation.
Solution Approach 2:
The system applies preservative locally to specific high-moisture portions of the crop identified by the moisture sensor array. The preservative application rate is varied spatially based on local moisture conditions, ensuring that only the portions requiring treatment receive preservative at higher rates, while low-moisture portions receive minimal or no preservative.
2Reliability
If preservative is applied to the entire bale, then all portions are protected, but preservative is wasted on low moisture portions and costs increase
Solution Approach 1:
The system implements spatially variable preservative application rates based on locally sensed moisture conditions. High-moisture portions receive higher preservative application rates while low-moisture portions receive reduced or zero application, eliminating preservative waste on already-safe portions while maintaining protection where needed.
Solution Approach 2:
Instead of applying preservative uniformly to the entire bale (excessive action on low-moisture portions), the system applies preservative partially and selectively only to the extent necessary for each local region based on its moisture content, optimizing both protection and resource efficiency.
3Measurement precision
If moisture sensor array is implemented, then high moisture portions are identified, but device complexity increases
Solution Approach 1:
The moisture sensor array serves multiple functions: it detects moisture content across the entire crop inlet width, identifies high-moisture portions, provides spatial distribution data for control algorithms, and enables real-time feedback for preservative application control. This multi-functionality justifies the added complexity by delivering comprehensive moisture monitoring capability.
4Manufacturing precision
If preservative application is controlled by ECU based on moisture data, then application precision is improved, but control system complexity increases
Solution Approach 1:
The ECU implements a closed-loop feedback control system where moisture sensor data from the array continuously feeds back to adjust preservative application rates in real-time. The control algorithm processes spatial moisture distribution data and dynamically modulates preservative delivery to match actual crop moisture conditions, achieving high application precision through feedback-driven adaptation.
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
This approach ensures that preservatives are applied only where needed, reducing waste and improving storage conditions by targeting specific moisture levels, thereby enhancing the quality and storage stability of the baled crop material.
Implementation Method 1
at least one moisture sensor, the at least one moisture sensor sensing moisture in incoming crop material across an entire width of the crop inlet
Data Source
AI summary
A method and apparatus are provided for applying preservative to agricultural crops during baling. More particularly, a baler has a preservative application system and a crop moisture sensor array. The crop moisture sensor array is in communication with the preservative application system so that the application of preservative to the crop can be controlled in response to a moisture content sensed by the crop moisture sensor array that exceeds both a moisture content threshold value and a threshold value relating to the percentage of crop material having a moisture content above the moisture content threshold value.