Portable Area Light Brightness Control for Low-Battery Runtime
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Solution Overview
Problem
Existing portable area lights do not effectively adjust lumen output based on battery supply and fail to alert users when the battery is nearing depletion, making it difficult for operators to manage lighting conditions efficiently.
Innovation Solution
A battery-powered area light with a controller that adjusts lumen levels and provides visual indicators to notify users of battery depletion through a series of brightness and color changes, transitioning to a lower output mode when the battery reaches certain thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the LED circuit outputs high lumen level to provide sufficient lighting, then illumination intensity is improved, but battery power is depleted faster
Solution Approach 1:
The patent implements dynamic adjustment of lumen output levels based on real-time battery status detection. The controller automatically transitions the LED circuit between different brightness levels (first lumen level, second lumen level, third lumen level) as the battery charge depletes, optimizing the balance between illumination needs and power conservation throughout the battery's operational lifecycle.
Solution Approach 2:
The system changes the operational parameters of the LED circuit by adjusting lumen output levels according to battery charge thresholds. When battery charge falls below predetermined thresholds, the controller modifies the light output parameter from high lumen level to reduced lumen levels, thereby extending battery operational duration while maintaining adequate lighting.
2Productivity
If the area light provides continuous high output to maintain working conditions, then productivity is improved, but battery depletion occurs without user awareness
Solution Approach 1:
The patent incorporates a feedback mechanism where the controller continuously monitors battery charge levels and provides visual feedback to the user through indicator lights. The indicator displays different states (sufficient charge, low charge, depleted) corresponding to battery status, enabling users to understand remaining operational time and adjust usage patterns accordingly, thus preventing unexpected loss of productivity.
3Loss of information
If the indicator provides frequent alerts to notify users of battery status, then information availability is improved, but user distraction and operational interruption increase
Solution Approach 1:
The patent implements periodic alerting rather than continuous notification. The indicator provides status information at predetermined intervals or threshold-based moments (when battery charge drops below specific levels), rather than constantly alerting the user. This periodic feedback mechanism keeps users informed of battery status while minimizing interruptions to workflow and maintaining operational efficiency.
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
The solution ensures adequate lighting while conserving battery power by dynamically adjusting output levels and alerting users to battery life, enhancing operational efficiency and usability.
Implementation Method 1
a LED circuit
Data Source
AI summary
An area light including a base including a battery receptacle for receiving a battery, a LED circuit, an indicator, and a controller coupled to the battery compartment, the LED circuit, and the indicator. The controller is configured to control the LED circuit to output a first lumen level, control the indicator to output a first indication when an instant time remaining of the battery is less than a first predetermined amount of time, control, after the first indication, the LED circuit to output the first lumen level, control the indicator to output a second indication when the instant time remaining of the battery is less than a second predetermined amount of time, the second predetermined amount of time being less than the first predetermined amount of time, and control, after the second indication, the LED circuit to output a second lumen level that is less than the first lumen level.