Level Setting Module for LED Fixture Dimming Control
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Solution Overview
Problem
Conventional toggle switches can only turn lighting fixtures on or off and lack the ability to control lighting levels, necessitating expensive and complex systems with low-voltage or wireless control methods that increase costs and require additional wiring and components.
Innovation Solution
A method using a conventional toggle switch to send signaling messages to level setting modules installed in lighting fixtures, allowing for multi-level control without additional primary power control or wiring, utilizing zener diodes to maintain constant dim voltage and connect directly to 0-10V input wires, enabling control of lighting levels without altering existing wall switch or dimmer hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional toggle switches are used to control lighting fixtures, then the system is simple and inexpensive, but the lighting level cannot be adjusted beyond on/off states
Solution Approach 1:
A level setting module is introduced as an intermediary device installed within the lighting fixture. This module receives control signals from the existing toggle switch through the load lines and converts them into appropriate dimming control signals for the LED driver, enabling multi-level control without modifying the original switch or adding complex wiring.
Solution Approach 2:
The patent replaces mechanical dimming controls (such as rheostats or tap switches) with an electronic level setting module that uses pulse-width modulation (PWM) or pulse-frequency modulation (PFM) to control LED brightness. This electronic approach substitutes mechanical components with solid-state electronics, reducing wear and improving reliability.
2Ease of operation
If 0-10V dimming control is implemented, then lighting level adjustment is enabled, but additional low-voltage wiring is required
Solution Approach 1:
The level setting module is designed to work with existing lighting control infrastructures by accepting control signals through the existing load lines that carry power to the fixture. The module can interpret various control methods (toggle switch positions, occupancy sensor signals, or manual dimming commands) and convert them into appropriate dimming control for the LED driver, making the system universally compatible without requiring separate control wiring.
Solution Approach 2:
The level setting module acts as an intermediary that bridges the gap between the existing power distribution system and the LED driver's dimming input. It extracts control information from the power lines or associated control lines and translates it into dimming commands, eliminating the need for separate 0-10V control wiring in many installations.
3Ease of operation
If wireless control systems are added to enable multi-level control, then lighting level adjustment is achieved, but system cost and complexity increase
Solution Approach 1:
The level setting module is designed to be self-contained and self-powered, drawing its operating power from the LED driver's existing power supply circuits. It includes onboard memory to store level settings and onboard processing to interpret control signals, eliminating the need for external power supplies, configuration interfaces, or complex communication protocols that would increase system cost.
Solution Approach 2:
The patent employs inexpensive, commercially available components such as standard microcontrollers, voltage regulators, and LED driver ICs that can be sourced at low cost. The level setting module is designed as a simple, single-function device that can be mass-produced at minimal cost, making it economically viable compared to expensive wireless control systems.
4Ease of operation
If existing wall switches are modified to provide dimming control, then lighting level adjustment is enabled, but hardware changes are required
Solution Approach 1:
The control functionality is segmented and relocated from the wall switch to the lighting fixture itself. The level setting module is installed independently within the fixture, separating the control function from the power distribution function. This allows the existing wall switch to remain unchanged while the fixture provides intelligent control through the level setting module that communicates with the driver.
Solution Approach 2:
The level setting module serves as an intermediary between the wall switch and the LED driver. It receives simple on/off or position signals from the existing switch and translates them into sophisticated dimming control signals for the driver, enabling enhanced functionality without modifying the original switch hardware.
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 cost-effective, reliable multi-level lighting control without additional hardware changes to existing systems, allowing for easy installation of level setting modules that can be controlled by a conventional toggle switch, reducing the need for complex wiring or communication systems and meeting regulatory requirements.
Implementation Method 1
maintain constant dim voltage and connect directly to 0-10V input wires
Data Source
AI summary
A system for setting the light level in one or more lighting fixtures connected to a control device such as a wall switch or occupancy sensor using only the conventional power wires. The conventional switch is used to turn power on and off to controlled circuits but also to send level setting sequences to special modules installed in the lighting fixtures and connected to the conventional 0-10V dimming connections. The special modules are connected only to the low voltage 0-10V dimming connections with no connections to the power line or neutral circuits.