Dual LED Lighting System with Battery Backup and Motion Detection
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Solution Overview
Problem
Current light control systems for operating devices, especially those using digital interfaces, face challenges in efficiently managing energy usage and protecting light sources, particularly in scenarios where dimming scenarios need to be dynamically adjusted based on occupancy patterns, and rapid switching is undesirable due to its impact on lamp lifespan and energy efficiency.
Innovation Solution
A method and system utilizing two independently controllable light-emitting diodes, where one is powered by a rechargeable battery during mains voltage failure and the other is controlled by a switchable motion detector connected to the mains voltage supply, allowing for adaptive brightness control and energy-efficient operation by ensuring lights are only on when necessary, with the ability to adjust scenarios based on occupancy patterns and time of day.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single light source is controlled by a motion detector with dimming scenarios, then energy efficiency is improved, but the system lacks adaptability to dynamically adjust brightness levels based on varying occupancy patterns
Solution Approach 1:
The lighting system is divided into multiple independently controllable light sources, each capable of being controlled by its own motion detector or sharing a common one. This segmentation allows each light source to be independently dimmed or switched based on specific occupancy patterns, providing both energy efficiency and adaptability. The system can create different dimming scenarios for different light sources simultaneously.
Solution Approach 2:
The system implements dynamic dimming scenarios that can be adjusted in real-time based on occupancy detection. Motion detectors trigger different dimming levels and fade times depending on the situation, allowing the lighting system to adapt dynamically to varying occupancy patterns while maintaining energy efficiency through automated dimming when spaces are unoccupied.
2Speed
If rapid switching between dimming levels is implemented, then responsiveness to occupancy changes is improved, but the lifespan of the light source deteriorates
Solution Approach 1:
The system pre-configures multiple dimming scenarios with predetermined dimming levels and fade times. When a motion detector triggers a scene change, the system transitions between these pre-planned scenarios rather than calculating new dimming curves in real-time. This preliminary preparation allows rapid switching between occupancy patterns while minimizing the number of incremental dimming steps, thereby extending light source lifespan.
Solution Approach 2:
The system uses controlled periodic dimming transitions with optimized fade-in and fade-out times. Instead of instantaneous switching or continuous incremental adjustments, the system implements periodic transitions between discrete dimming levels with appropriate timing. This periodic action pattern reduces the total number of switching cycles while maintaining responsiveness to occupancy changes.
3Adaptability or versatility
If multiple independently controllable light sources are used, then adaptability to different occupancy patterns is improved, but device complexity increases
Solution Approach 1:
The system employs universal control architecture where multiple light sources can share common motion detectors and dimming control circuits. Each light source is equipped with standard interfaces that can respond to various control signals from different motion detectors or a centralized controller. This multi-functionality allows the system to achieve high adaptability with shared control infrastructure, reducing overall device complexity.
Solution Approach 2:
The system uses standardized dimming scenario configurations that can be copied and applied across multiple light sources. Instead of programming unique control logic for each light source, the same dimming scenarios and control parameters can be replicated across different channels. This copying approach maintains adaptability while significantly reducing the complexity of system configuration and control logic.
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 approach enables energy-efficient and safe lighting by maintaining a basic brightness level with one light-emitting diode when unoccupied and increasing brightness with the second when presence is detected, ensuring emergency lighting during power failures, while minimizing rapid switching and extending lamp lifespan.
Implementation Method 1
the first operating device (2a) via a rechargeable battery (50) activates a light-emitting diode (4) at least in the event of a mains voltage failure
Implementation Method 2
The lamp (4; 6) has at least two independently controllable light-emitting diodes (4; 6)
Data Source
Figure 1
Figure 2
AI summary
The invention relates to an illuminating system (10) for activating a light source, said light source comprising at least two light emitting diodes (4, 6) which can be controlled independently of each other, said two illuminating diodes (4, 6) which can be independently activated are operated by respectively one operating device (2a, 2b), the first operating device (2a) comprising a rechargeable battery and activates a light-emitting diode (4) at least in the event of a failure in the mains voltage. The second operating device (2b) is connected to the mains voltage supply by means of a switchable motion detector.