Vehicle Grit Distribution Device Throughput Control
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Solution Overview
Problem
Existing combine harvesters face challenges in maintaining a consistent width of the grit distribution strip due to fluctuations in moisture content and other factors, requiring significant driver intervention to adjust operating parameters, which affects efficiency and coverage.
Innovation Solution
A detection device measures the throughput of the processing path, and a control unit adjusts operating parameters of the distribution device, such as outlet speed and oscillation amplitude, to maintain a consistent strip width with minimal driver assistance, using sensors for real-time feedback and automatic compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the distribution device operates with fixed parameters, then the device complexity is reduced, but the strip width consistency deteriorates due to moisture content variations and throughput fluctuations
Solution Approach 1:
The control unit dynamically adjusts operating parameters of the distribution device (such as outlet speed, oscillation amplitude, or ejection velocity) based on real-time throughput detection and moisture content sensing. This allows the system to maintain consistent strip width despite variations in crop conditions and processing rate.
Solution Approach 2:
The system implements a closed-loop control where detectors monitor both the throughput of the processing line and the moisture content of the grit, feeding this information to the control unit which then adjusts distribution device parameters accordingly. This feedback mechanism ensures automatic compensation for varying operating conditions.
2Ease of operation
If automatic control based on throughput detection is implemented, then the driver workload is reduced, but the device complexity increases due to additional sensors and control systems
Solution Approach 1:
The control unit serves multiple functions: it processes signals from throughput detectors, integrates moisture content data from sensors, calculates appropriate parameter adjustments, and controls the distribution device. This multi-functionality reduces the need for separate dedicated components for each control task.
Solution Approach 2:
The system automatically monitors its own operating conditions through integrated detectors and sensors, and self-adjusts the distribution parameters without requiring external intervention. The control unit continuously adapts the system to maintain optimal performance based on real-time feedback from the processing line.
3Manufacturing precision
If the grit outlet velocity is increased to compensate for low throughput, then the strip coverage is improved, but the energy consumption increases
Solution Approach 1:
The system dynamically adjusts the grit outlet velocity based on real-time throughput conditions rather than maintaining a fixed high velocity. The control unit modulates the ejection parameters to match actual processing needs, ensuring adequate strip coverage only when necessary and reducing energy consumption during high-throughput periods.
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 solution ensures a stable and evenly distributed grit strip across the field, improving efficiency by reducing driver workload and maintaining consistent coverage despite varying conditions.
Implementation Method 1
a detection device for detecting the throughput of the processing line is provided
Implementation Method 2
The particles of the grit, which are ejected from the distribution device, generally have a low density and are correspondingly strongly decelerated by the air resistance
Implementation Method 3
The heavier the flow of spreading material at the outlet of the distribution device, the more air is entrained by the spreading material. A strong airflow causes the deceleration of each particle by air resistance to decrease
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A vehicle with a receiving device (3) for harvested crop (9) from a field, a processing section in which spreading material is separated from the harvested crop, and a distribution device (4) for ejecting the spreading material onto the field comprises a detection device (21) for detecting the throughput of the processing section and a control unit (20) which is connected to the detection device (21) and the distribution device (4) in order to control at least one operating parameter of the distribution device (4) as a function of the throughput.