Rearward Camera Magnification for Windrow Monitoring
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Solution Overview
Problem
Operators of agricultural implements like windrowers face difficulty in monitoring and adjusting the shape of the windrow formed behind the machine due to its rearward formation relative to the direction of travel, making it hard to view and control effectively.
Innovation Solution
A crop windrow monitoring system that includes a power unit with a windrow forming unit, an image sensor facing rearward to capture the windrow, and a visual monitor displaying the image with adjustable magnification based on the direction of movement, allowing operators to view and control the windrow more effectively by changing magnification and overlaying indicia for width measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image is displayed at high magnification to see the windrow details, then the measurement precision of windrow shape is improved, but the operator's field of view for maneuvering is reduced
Solution Approach 1:
The system dynamically adjusts the magnification level of the displayed image based on the power unit's movement state. When moving forward, the system displays higher magnification for detailed windrow monitoring; when reversing, it switches to lower magnification to provide broader field of view for maneuvering. This dynamic adaptation resolves the contradiction between measurement precision and field of view requirements.
2Area of stationary object
If the image is displayed at low magnification to see the surrounding area, then the operator's field of view is improved, but the measurement precision of windrow shape is reduced
Solution Approach 1:
The system switches between different magnification levels based on operational context. During forward movement when precise windrow monitoring is needed, high magnification is applied. During reverse movement when spatial awareness is prioritized, low magnification is applied. This contextual switching resolves the trade-off between field of view and measurement precision.
3Manufacturing precision
If the operator monitors the windrow in real-time, then the manufacturing precision of windrow shape is improved, but the complexity of the monitoring system increases
Solution Approach 1:
The visual monitor system serves multiple functions: it displays the captured image, adjusts magnification levels, determines power unit movement direction, and provides real-time windrow monitoring. By consolidating these functions into a single integrated system, the patent achieves real-time monitoring capability while minimizing the increase in overall system complexity.
4Productivity
If the image is captured continuously for real-time monitoring, then the productivity of windrow adjustment is improved, but the energy consumption of the image sensor increases
Solution Approach 1:
The system captures and displays images continuously for real-time monitoring, enabling immediate windrow adjustment. The periodic capture ensures that the operator receives updated visual feedback at regular intervals, maintaining high productivity while managing energy consumption through efficient image processing and display updates.
Data Source
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AI summary
A crop windrow monitoring system includes an image sensor (52) positioned to include a field of view facing a rearward direction of a power unit (24), and a visual monitor (40) operable to display an image. A computing device (56) is operable to determine an intended direction of movement of the power unit (24). The image is displayed on the visual monitor (40) in a first mode having a first magnification when the intended direction of movement includes the rearward direction. The image is displayed on the visual monitor (40) in a second mode having a second magnification and overlaid with indicia (64) indicating a width of the windrow when the intended direction of movement includes the forward direction. The second magnification may be larger than the first magnification.