Adaptive Headlight Control for Working Machine Visibility
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Solution Overview
Problem
Working machines, such as snowplows, face challenges in being noticed by surroundings, especially in noisy environments or when traveling quietly, as traditional headlights may not effectively convey their presence, especially in varying environmental conditions.
Innovation Solution
Incorporating a detection unit that senses external environments, including inclination, load, and ambient brightness, to control an illumination unit that adjusts lighting states, including color and flashing patterns, to enhance visibility and alert operators to potential hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the headlight is constantly lit, then the presence of the working machine is more visible to those in the surroundings, but the change in appearance is small and may not be noticed especially in daytime
Solution Approach 1:
The patent applies dynamics by making the lighting system adaptive rather than static. The control unit dynamically adjusts the illumination unit's operation based on environmental conditions detected by the detection unit. Specifically, the system transitions between different lighting modes (constant lighting, intermittent lighting, off) based on ambient light levels and working machine state, resolving the contradiction between visibility and system complexity.
Solution Approach 2:
The patent changes the operational parameters of the illumination unit based on detected conditions. The control unit modifies lighting intensity, duration, and pattern according to ambient brightness and machine state. This parameter adaptation allows the system to maintain visibility while avoiding unnecessary constant operation, thereby reducing overall system complexity.
2Use of energy by moving object
If the headlight is turned on and off manually, then energy consumption is reduced, but the presence of the working machine may not be noticed in noisy environments or when traveling quietly
Solution Approach 1:
The patent implements feedback by using the detection unit to continuously monitor environmental conditions and machine state, then feeding this information to the control unit which adjusts the illumination unit accordingly. This closed-loop system ensures the lighting provides necessary visibility information while consuming energy only when needed, based on real-time conditions rather than manual operation.
Solution Approach 2:
The lighting system serves itself by automatically determining when illumination is needed based on detected conditions. The detection unit and control unit enable the system to self-regulate its visibility output without manual intervention, optimizing the balance between energy consumption and information provision to the surroundings.
3Loss of information
If multiple detection sensors are added to detect various external environments, then the ability to inform workers of warnings is improved, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing the illumination unit to serve multiple functions: it provides visibility of the working machine to the surroundings and simultaneously conveys information about detected external conditions through different lighting patterns. This multi-functionality reduces the need for separate warning devices, thereby limiting the increase in overall system complexity while improving information delivery.
Solution Approach 2:
The patent merges the visibility function and warning information function into a single illumination system. By combining these functions, the patent avoids adding separate complex warning devices while still providing comprehensive environmental information to workers through the same lighting infrastructure.
Data Source
AI summary
Presence of a working machine is noticed by those in the surroundings, and a worker is easily informed of a warning relating to an external environment. A working machine includes a detection unit including a sensor detecting an external environment of a machine body, and a control unit that controls a headlight that functions as an illumination unit based on the detected external environment.