PoE LED Driver Daisy-Chain Power Aggregation
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Solution Overview
Problem
Existing Power over Ethernet (PoE) systems lack an efficient and cost-effective method to control and power a variety of light emitting diode (LED) lighting systems, as well as other low-voltage devices, while being easy to install and configure.
Innovation Solution
A PoE LED driver system that includes a microcontroller for receiving power and control signals from a PoE switch, controlling LED driver chips, and utilizing a daisy-chained arrangement with LED slave controllers to power and control multiple LED fixtures through Ethernet cables, allowing for easy installation and flexible control of LED lighting systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional power systems are used for LED lighting, then sufficient power can be provided to lighting fixtures, but installation costs increase due to expensive high voltage wiring and conduit requirements
Solution Approach 1:
The patent replaces traditional mechanical/electrical power delivery systems (high voltage wiring and conduit) with a PoE-based system that uses Ethernet cables to deliver both power and data. This substitution eliminates the need for separate high voltage wiring infrastructure, reducing installation costs while maintaining adequate power delivery to LED fixtures through the standardized PoE protocol
Solution Approach 2:
The patent implements a multi-functional PoE system where a single Ethernet cable performs multiple functions: delivering power to LED fixtures, transmitting control signals for dimming and scheduling, and enabling communication between fixtures and the control system. This consolidation of power and control functions into a single infrastructure reduces overall installation complexity and cost
2Ease of manufacture
If Power over Ethernet is used to power LED lighting systems, then installation becomes faster and cheaper using existing Ethernet cabling, but the available power from standard PoE standards is insufficient for many LED fixtures
Solution Approach 1:
The patent merges multiple PoE power sources and power delivery paths to accumulate sufficient power for LED fixtures. By combining power from multiple Ethernet cables and utilizing power aggregation techniques, the system overcomes the individual power limitations of single PoE ports while maintaining the installation advantages of using existing Ethernet infrastructure
3Ease of operation
If a centralized control system is used for PoE LED lighting, then power and control can be delivered over Ethernet cables, but system complexity increases for configuration and control
Solution Approach 1:
The patent implements self-service capabilities in the PoE LED lighting system where fixtures automatically configure themselves when connected to the PoE network. The system performs automatic device discovery, network registration, and parameter configuration without requiring manual setup, thereby simplifying system configuration while maintaining integrated control over power and lighting functions
Data Source
AI summary
A system for controlling a plurality of LED lighting fixtures includes a Power over Ethernet (PoE) LED driver coupleable to a PoE switch via a first power and communication link. The PoE LED driver includes a microcontroller for receiving first power and control signals from the PoE switch and for controlling a first LED driver chip to operate an LED lighting fixture in response thereto. An LED slave controller is connected to the PoE LED driver via a second power and communication link. The LED slave controller includes a second LED driver chip for receiving second power and control signals from the microcontroller to operate an LED lighting fixture in response. The first power and control signals are different from the second power and control signals. The first power and communication link is a CAT5/CAT6 cable. The second power and communication link is a CAT5/CAT6 or other cable type.