Configurable LED Driver with Polling Signal for Fixture Matching
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Solution Overview
Problem
Existing LED drivers adapted for communication networks have predetermined characteristics, making them difficult to modify or adjust to optimize performance with specific LED fixtures, especially as LED fixtures with varying voltage or current levels and increased functionality become more common.
Innovation Solution
An LED driver with a power converter and a control unit that includes an application terminal for receiving configuration data from LED fixtures or sensors, allowing for dynamic adjustment of output characteristics such as voltage and current levels, and enabling two-way communication via a polling signal and response signal, facilitating better matching with connected LED fixtures and increased functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LED drivers are designed with predetermined characteristics for network operation, then they can operate reliably in communication networks, but they become difficult to modify or adjust for optimal matching with specific LED fixtures
Solution Approach 1:
The patent implements dynamic configurability of the LED driver through a control unit that can be programmed with different operating parameters. The driver transitions from a static, predetermined design to a dynamic system where output characteristics (current, voltage, frequency) can be adjusted in real-time based on the specific LED fixture requirements, while maintaining reliable network operation through consistent communication protocols
Solution Approach 2:
The invention changes the operating parameters of the LED driver through programmable control. By modifying parameters such as output current, voltage levels, switching frequency, and dimming curves through software configuration, the same hardware platform can adapt to different LED fixture types and requirements, resolving the contradiction between fixed reliability and flexible adaptability
2Productivity
If multiple LED drivers are designed for different voltage or current levels to accommodate various LED fixtures, then performance can be optimized for each fixture type, but device complexity and stock management become problematic
Solution Approach 1:
The patent creates a universal LED driver platform that can serve multiple LED fixture types through programmable control. A single driver design with configurable parameters replaces the need for multiple specialized drivers, enabling one device to perform multiple functions by loading different configuration profiles for various LED types, power levels, and operational requirements
Solution Approach 2:
The invention uses software copying/configuration to replicate different driver behaviors without physical hardware variations. Configuration files or firmware profiles containing specific operating parameters can be copied and loaded into the control unit, allowing the same hardware to emulate different driver characteristics tailored to specific LED fixtures, thereby reducing hardware complexity and stock requirements
Data Source
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AI summary
An LED driver for powering an LED fixture is described, the LED driver comprising - a power converter for converting an input power such as a rectified mains supply to an output power for powering the LED fixture; - a control unit arranged to control an output characteristic of the power converter; - an application terminal connected to the control unit for connecting the control unit to a lighting device; the control unit being arranged to: - provide a polling signal to the lighting device; - receive, in response to the polling signal, a first control signal for controlling the output characteristic.