Lighting System Power Backup Extension via Dynamic Dimming
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Solution Overview
Problem
Power backup systems in lighting systems have limited duration, and existing solutions do not effectively extend the operational time during power failures, often relying on batteries that deplete quickly due to high power consumption and may trigger false alarms or incorrect responses.
Innovation Solution
A lighting system with a mesh communication topology and microcontroller-controlled light sources that reduce power consumption by detecting power failures through sensor units and adjusting light output levels, incorporating features like signal repetition, timers, and voltage monitoring to predict and respond to power failures proactively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If power backup units are provided with sufficient battery capacity to extend operational time, then duration of action is improved, but device complexity and cost increase
Solution Approach 1:
The lighting units dynamically adjust their light output intensity based on ambient light conditions and power availability. The control device modifies operating parameters (dimming lights) to reduce power consumption during backup operation, extending operational time without requiring larger battery capacity
Solution Approach 2:
The system changes operational parameters by detecting ambient light levels and adjusting light output accordingly. During power backup, the system reduces power consumption by dimming or selectively switching off lights, thereby extending the duration battery power can sustain operation
2Duration of action of moving object
If power consumption is reduced during power failures, then duration of action is improved, but illumination intensity deteriorates
Solution Approach 1:
The lighting units dynamically adjust light output based on real-time ambient light conditions detected by sensors. The system balances illumination needs with power conservation by modulating light intensity rather than simply switching lights off
Solution Approach 2:
Different lighting units or zones are treated differently based on local ambient light conditions. The control device can dim or switch off specific lights in areas with sufficient natural light while maintaining full operation in areas requiring illumination, optimizing both comfort and power consumption
3Reliability
If voltage monitoring and prediction features are added to detect power failures, then reliability is improved, but device complexity increases
Solution Approach 1:
The control device monitors voltage levels and detects trends indicating approaching power failure before it occurs. By taking preliminary action based on voltage monitoring, the system can prepare for power loss by adjusting light output and notifying users, improving reliability of power failure response
Solution Approach 2:
The system continuously monitors voltage levels and uses this feedback to adjust operation. The control device processes voltage information to detect power failure conditions and triggers appropriate responses, creating a closed-loop control system that improves reliability
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 system extends the operational time of power backup units by reducing power consumption during failures and minimizes false triggers, ensuring continuous illumination while reducing battery drain and false alarms.
Implementation Method 1
The processor may determine, based on input from an ambient light sensor, that a first lighting output should be provided to a first lighting device
Implementation Method 2
The processor may determine, based on input from a proximity sensor, that a second lighting output different to the first lighting output should be provided to the first lighting device
Implementation Method 3
The processor may determine, based on input from a touch sensor, that a second lighting output different to the first lighting output should be provided to the first lighting device
Implementation Method 4
a first lighting output should be provided to a first lighting device
Data Source
Figure 1
AI summary
A lighting system (1 ) comprises buffered (3, 3s) and non-buffered (2) power iines. At least one lighting unit (1 10) receives power from a non-buffered power line, and is adapted to transmit a communication signal either continuously or repetitively. At least one lighting unit (10) receives power from a buffered power line, and is adapted to monitor receipt of the communication signal and to reduce light output if it does not receive the communication signal.