Intelligent Baler with Sensor-Driven Compression Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Agricultural balers face challenges in achieving uniform bale density and shape due to inverse relationships between bale material quantity and compression, leading to suboptimal throughput and increased wear on the baler mechanism, as well as issues with top fill and left-right fill affecting bale stability and quality.
Innovation Solution
The implementation of multiple sensors and a controller that subdivide sensor inputs into subsets to prioritize and optimize specific features such as top fill and left-right fill in separate time periods, allowing for proactive adjustment of baler operation parameters to maintain predetermined ranges, thereby improving bale quality and reducing wear on the baler mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large quantity of material is fed into the bale chamber on each stroke, then the throughput of the baler is improved, but the compression level and density of the bale decrease
Solution Approach 1:
The patent divides the baling process into multiple compression strokes per slice entry. Instead of compressing all material in one stroke, the system enters a slice and performs multiple reciprocating compression strokes (e.g., 3-5 strokes) to gradually compress the material. This segmentation allows each stroke to work on a manageable quantity of material, achieving high density while maintaining high throughput through automated multi-stroke compression sequences.
Solution Approach 2:
The patent implements periodic reciprocating motion of the plunger within the baling chamber. The plunger performs repeated forward compression strokes followed by backward reset strokes, creating a periodic compression cycle. This periodic action allows the same slice to be compressed multiple times with increasing density, transforming a single large-compression event into multiple controlled compression phases that maintain both throughput and density.
2Manufacturing precision
If a small quantity of bale material is fed into the bale chamber on each stroke, then the density of the bale is improved, but the throughput of the baler decreases
Solution Approach 1:
The patent employs a pre-compression chamber that performs preliminary compression of crop material into compact slices before they enter the main baling chamber. This preliminary action reduces the volume and increases the initial density of the material, so that when the slice enters the baling chamber, less material needs to be compressed per stroke to achieve the target final density. This enables smaller compression quantities per stroke while maintaining overall throughput.
Solution Approach 2:
The patent maintains continuous operation by overlapping the preparation of the next slice in the pre-compression chamber with the compression of the current slice in the baling chamber. While one slice is being compressed through multiple strokes, the pre-compression chamber continuously prepares the next slice, ensuring no idle time between compression cycles. This continuity allows small per-stroke compression quantities to result in high overall throughput.
3Productivity
If non-uniform fill occurs in the baling chamber, then the throughput is maintained, but the bale stability and quality deteriorate due to excessive wear on the plunger and baling chamber
Solution Approach 1:
The patent incorporates sensors (such as optical or capacitive sensors) that detect the fill level and uniformity of crop material in the pre-compression chamber and baling chamber in real-time. This feedback information is used by the control system to adjust the stuffer mechanism, plunger timing, and compression force to maintain uniform material distribution. By continuously monitoring and adjusting based on actual fill conditions, the system prevents non-uniform compression that would cause excessive wear while maintaining optimal throughput.
Solution Approach 2:
The patent employs dynamically adjustable parameters including variable stuffer speed, adjustable plunger compression force, and flexible synchronization timing between the pre-compression chamber and baling chamber. These dynamic adjustments allow the system to adapt to varying crop conditions and maintain uniform material distribution in the baling chamber, preventing localized over-compression or under-compression that would lead to excessive wear on mechanical components while preserving high throughput operation.
Data Source
AI summary
An agricultural baler including a baling chamber and a pre-compression chamber, the baling chamber including at least one movable wall. The agricultural baler further includes multiple sensors and a controller adapted for controlling operation of the agricultural baler based on inputs of the multiple sensors, wherein a first subset of the multiple sensors is related to a first feature and a second subset of the multiple sensors is related to a second feature. The controller is configured to control the operation of the agricultural baler in a first time period until the first feature is within a first predetermined range, and to control the operation of the agricultural baler in a subsequent time period, until the second feature is within a second predetermined range.