Header Reel Finger Lighting for Shadow-Free Cutterbar Visibility
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Solution Overview
Problem
Nighttime agricultural operations face challenges due to shadows cast by traditional light sources located remote from the cutterbar, obstructing the operator's view of the draper header and adjacent areas, which limits situational awareness and safety.
Innovation Solution
The method involves providing targeted illumination from reel fingers of a header reel, which includes optical components like light pipes and LEDs, strategically positioned and oriented to emit light along the reel fingers, allowing illumination of the cutterbar and adjacent areas without shadows, and using sensors to selectively activate and deactivate illumination based on the reel's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional light sources are located remote from the cutterbar, then the illumination can be provided to the general area, but shadows are cast that obstruct the operator's view of the draper header and adjacent areas
Solution Approach 1:
The illumination system is segmented into multiple distributed light sources positioned at different locations on the header reel and cutterbar assembly. Each light source illuminates its local area, collectively providing comprehensive coverage without creating overlapping shadows that would obstruct the operator's view.
Solution Approach 2:
Light sources are positioned in three-dimensional space around the cutterbar and draper header assembly, not just in a single plane. This spatial distribution allows light to reach areas from multiple angles, eliminating shadows that would otherwise be cast by remote illumination.
2Ease of operation
If light sources are positioned to illuminate the working area, then situational awareness is improved, but glare and distractions may occur that divert operator attention
Solution Approach 1:
Each light source is positioned and directed to provide localized illumination exactly where needed for the agricultural operation, rather than creating broad omnidirectional lighting. This targeted approach improves situational awareness in the work area while minimizing light directed toward the operator that would cause glare.
Solution Approach 2:
The illumination system employs asymmetric positioning and directional control of light sources, with lights oriented to illuminate the cutterbar and working area while deliberately avoiding direct illumination of the operator's cab or viewing paths, thus reducing glare and distractions.
3Illumination intensity
If illumination is provided continuously from the header reel, then the working area is always lit, but energy consumption increases and unnecessary illumination occurs during portions of rotation
Solution Approach 1:
The illumination system operates periodically rather than continuously, with light sources being activated and deactivated based on the rotational position of the header reel. Sensors detect when the reel is in positions where illumination is needed and control the light sources accordingly, providing necessary lighting while minimizing energy consumption during portions of the rotation where illumination is not required.
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 enhances situational awareness and safety by providing clear illumination of the working area, reducing shadows and glare, and allowing operators to maintain focus on the field without distractions, even during low ambient light conditions.
Implementation Method 1
The illumination may be released from an optical component of the reel finger. The optical component may be a light pipe.
Implementation Method 2
The header reel may include a tilt switch. Providing illumination from a portion of a header reel may include providing illumination when the tilt switch attains a first orientation. Stopping illumination from the portion of the header during a second amount of rotation may include stopping illumination when the tilt switch attains a second orientation, different from the first orientation.
Data Source
AI summary
Systems, methods, and apparatuses for emitting light from a header reel are disclosed. More particularly, systems, methods, and apparatuses for selectively emitting light from different portions of a reel header are disclosed. In some implementations, light is selectively emitted from different parts of a reel header based on a position of the reel header. For example, light may be emitted based on a position of the portion of the reel header as the reel header is rotated. The emitted light provides for illumination and operator visualization during, for example, agricultural operations performed at night or during low ambient light conditions.