Forestry Harvester Head Valve Control Unit for Work Light Management
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Solution Overview
Problem
Existing forestry machine lighting systems consume excessive power and require manual control, often reducing operator visibility and increasing ergonomic challenges, as they cannot be controlled separately or adjusted based on specific work conditions.
Innovation Solution
Integration of a valve control unit within the harvester head to manage power supply and control LED work lights, utilizing embedded control systems for automatic operation based on environmental conditions, work stages, and sensor data, allowing for precise illumination adjustment and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If work lights are continuously switched on to improve visibility, then operator visibility is improved, but power consumption increases
Solution Approach 1:
The work lights are controlled dynamically based on real-time conditions including ambient light levels detected by sensors, current work stage of the harvester head, and operator position. The system transitions from static continuous operation to dynamic conditional operation, adjusting illumination accordingly to optimize both visibility and power consumption.
Solution Approach 2:
The system incorporates sensors that continuously monitor ambient light conditions and feed this information back to the control unit. The control unit processes this feedback along with work stage data to automatically adjust work light operation, creating a closed-loop control system that responds to changing conditions.
2Ease of operation
If work lights are controlled manually from the cab, then control flexibility is maintained, but operator workload increases and ergonomics deteriorate
Solution Approach 1:
The work light control system operates autonomously using embedded control logic within the harvester head. The system self-regulates based on sensor inputs and work stage detection, eliminating the need for manual operator intervention while maintaining appropriate illumination levels throughout the work process.
Solution Approach 2:
The work light control functionality is merged with the existing harvester head control system and embedded control unit. This integration allows the work lights to be controlled through the same control architecture that manages other harvester head functions, reducing overall system complexity and operator workload.
3Device complexity
If work lights are controlled as a totality, then control simplicity is maintained, but precise illumination control is lost
Solution Approach 1:
The work light system is segmented into individually controllable units, each associated with specific work zones or functions. The control unit can selectively activate or adjust individual work lights based on the current work stage and lighting conditions, providing precise illumination control while maintaining manageable system complexity through modular architecture.
4Adaptability or versatility
If separate control systems are used for work lights, then control independence is maintained, but system complexity and power requirements increase
Solution Approach 1:
The work light control is merged with the existing embedded control system of the harvester head. The control unit leverages existing sensors, processors, and communication protocols already present in the harvester head, eliminating the need for separate dedicated control hardware and reducing overall system complexity while maintaining functional independence.
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 reduces power consumption, enhances operator visibility, and improves ergonomics by automatically controlling work lights according to real-time conditions, ensuring optimal illumination without manual intervention, thus extending light lifespan and improving work efficiency.
Implementation Method 1
The work light is preferably a LED work light
Data Source
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AI summary
The invention relates to a system for controlling work lights in a forestry machine, which system includes a harvester head (16), attached to the set of booms (14) of the forestry machine (10), for felling and processing trees, at least one work light (20) attached to the harvester head (16) for illuminating the harvester head (16) and its surroundings, and control means (15) for controlling the operation of the work light (20). The control means (15) are the valve control unit (25) belonging to the harvester head (16) for controlling the valves of the harvester head (16), which control unit (25) is arranged to feed power and/or control the power feed to the said work light (20).