Intelligent Light Controller Emergency Power Switching
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Solution Overview
Problem
Existing emergency lighting systems do not effectively balance power conservation with compliance to emergency lighting standards, such as NFPA 101, particularly in switching between normal and emergency power supplies, and do not account for non-emergency power conservation during potential false emergency conditions.
Innovation Solution
An intelligent light controller that interprets the switch from normal to emergency power, powers the light for a predetermined period (e.g., 90 minutes) and then initiates energy-saving behavior, using sensors and communication with non-emergency devices to confirm the emergency status and override if it's not genuine, thereby reducing power consumption while ensuring compliance with emergency lighting requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If emergency lighting is continuously powered to ensure compliance with NFPA 101 standards, then emergency lighting reliability is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts lighting operation mode based on power source detection. When emergency power is detected, the light operates continuously to meet NFPA 101 requirements. When normal power is detected, the system transitions to on-demand operation, allowing the light to be turned off when not needed, thus reducing energy consumption while maintaining emergency readiness.
Solution Approach 2:
The intelligent light controller automatically detects the power source type (normal vs. emergency) and autonomously adjusts the lighting behavior without manual intervention. The system self-manages the transition between continuous emergency mode and energy-saving normal mode, eliminating the need for manual switching while ensuring compliance and conservation.
2Ease of operation
If a dual-purpose light fixture with bypass switch is used to allow user control during normal power, then ease of operation is improved, but device complexity and cost increase
Solution Approach 1:
The intelligent light controller provides multiple functions within a single device: it detects power source type, automatically switches between emergency and normal operating modes, and enables user control during normal power without requiring separate bypass hardware. This multi-functionality eliminates the need for additional UL 924 bypass switches and complex dedicated emergency circuits.
Solution Approach 2:
The patent replaces mechanical bypass switches and dedicated emergency circuits with an intelligent electronic controller that uses sensors and control logic to detect power source type and automatically adjust operation. This electronic substitution eliminates complex mechanical switching hardware while providing equivalent or superior functionality.
Data Source
AI summary
Methods, apparatuses and systems of an intelligent light controller controlling a light, are disclosed. One method includes interpreting a switch from a normal power supply to an emergency power supply. Upon interpreting the switch from the normal power supply to the emergency power supply, the intelligent light controller controllably powers the light for a predetermined period of time. Further, the intelligent light controller executes an energy-savings behavior control of the light.