LED Emergency Driver Switching for Consistent Outage Illumination
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Solution Overview
Problem
Existing LED lamp drive systems with emergency power supplies continue to operate control sensors during power outages, leading to inconsistent illumination and incompatibility with emergency working environments.
Innovation Solution
An LED lamp drive system with a power switching module that isolates sensor control during emergency mode, using input voltage or constant electrical signals to switch between emergency and mains power modes, ensuring continuous illumination and sensor disconnection during emergencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the control sensor continues to operate during power outages, then the sensor can detect environmental changes, but the illumination becomes inconsistent and incompatible with emergency working environments
Solution Approach 1:
The patent extracts the sensor control function from the overall lighting control system during emergency mode. The controller selectively disables sensor-based control when operating on emergency power, isolating this non-essential function to ensure consistent illumination for safety purposes while maintaining sensor operation capability when mains power is available.
2Reliability
If the sensor control is disconnected during emergency mode, then the illumination consistency is improved, but the device complexity increases due to mode switching control
Solution Approach 1:
The control system dynamically adjusts its behavior based on power source detection. The controller automatically switches between sensor-controlled mode (mains power) and direct illumination mode (emergency power) without requiring manual intervention or complex configuration, managing system complexity through adaptive operational states.
Solution Approach 2:
The system uses feedback from power source detection to automatically adjust control modes. The controller monitors whether it is operating from mains or emergency power and accordingly enables or disables sensor control, creating a self-regulating system that maintains illumination consistency without adding significant complexity.
3Reliability
If the LED lamp provides continuous illumination during emergency mode, then the emergency lighting function is improved, but the energy consumption from the emergency power supply increases
Solution Approach 1:
The system performs preliminary charging of the emergency power supply during periods when mains power is available. This advance energy storage ensures that when emergency mode is activated, the stored energy can sustain continuous illumination for the required duration, balancing emergency lighting reliability with energy conservation during normal operation.
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
Enables continuous and consistent emergency illumination by disconnecting sensor control during power outages, allowing flexible and variable illumination modes upon power restoration.
Implementation Method 1
an emergency power supply (10) electrically connected to the electric supply network and configured to obtain electrical energy from the electric supply network and then store the electrical energy that is obtained
Implementation Method 2
an LED light bead (50) electrically connected to the LED drive power supply and configured to be driven by the LED drive power supply to light up
Data Source
AI summary
The present disclosure provides an LED lamp drive system with an emergency power supply thereof configured to detect an input voltage of an electric supply network or an emergency power supply to determine whether the LED lamp drive system is during in an emergency working mode or a mains power working mode, and a power switching module configured to control a drive control module to isolate or connect a drive regulation signal that corresponds to a sensor module to an LED drive power supply, for lighting up LED light beads thereof. During in the emergency working mode, the drive control module isolates the drive regulation signal that corresponds to the sensor module, and during in the mains power working mode, the sensor module inputs a detection signal, and the drive regulation signal corresponding to the detection signal is connected to the LED drive power supply for providing flexible illumination thereof.