LED Light Controller Rotary Switch Triac Circuit
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Solution Overview
Problem
Conventional methods for selecting color shows in LED landscape, pool, and spa lights are tedious, requiring manual toggling of AC power switches, which is inefficient for users dealing with multiple color options.
Innovation Solution
A system that includes a rotary switch, microcontroller, and triac circuit to communicate AC power to LED sources, allowing users to select color shows through a user interface, with the microcontroller controlling LED outputs based on selector positions and sensing circuit data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional AC switch toggling is used to select color shows, then the system structure remains simple, but user operation becomes tedious and time-consuming when dealing with multiple color options
Solution Approach 1:
A rotary switch with overlay is introduced as an intermediary device between the user and the LED color show selection. The overlay displays multiple color show options and the rotary switch allows users to easily rotate and select different shows without complex toggling, thereby improving ease of operation while keeping the overall system relatively simple
Solution Approach 2:
The patent replaces conventional AC switch toggling with a rotary switch mechanism that has multiple positions corresponding to different color shows. This mechanical substitution allows users to select color shows by simply rotating the switch to the desired position rather than repeatedly toggling switches, significantly improving operational ease
2Adaptability or versatility
If multiple LEDs of various colors are used with PWM control, then color show versatility is improved, but the device complexity and number of components increases
Solution Approach 1:
The patent employs a single white LED that can emit multiple colors through phosphor conversion and PWM control. This universal approach allows one LED component to perform multiple color functions, achieving color show versatility without increasing the number of LED components. The white LED can be controlled to produce various colors by adjusting the PWM duty cycle, thereby maintaining simplicity while providing adaptability
3Manufacturing precision
If precise PWM control is implemented for LED intensity, then color accuracy is improved, but the control system complexity increases
Solution Approach 1:
The patent uses PWM (pulse-width modulation) technology to control LED intensity by changing the duty cycle parameter of the control signal. This allows precise control of color intensity and hue by adjusting the timing parameters rather than requiring complex analog circuitry. The microcontroller generates PWM signals with varying duty cycles to achieve different color intensities, thereby maintaining precision while keeping the control system relatively simple through digital parameter adjustment
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
This system simplifies the selection of color shows by enabling users to choose from multiple options using a rotary switch, with the microcontroller and triac circuit ensuring precise control over LED outputs, reducing user effort and enhancing operational efficiency.
Implementation Method 1
The triac clips the voltage from the AC source to the LED sources in order to provide one or more voltage pulses to the LED sources based on the signals received from the microcontroller
Implementation Method 2
The sensing circuit can transmit data to the microcontroller corresponding to the characteristic of the output power trace
Data Source
AI summary
Embodiments of the disclosure provide a system for selecting a color show generated by LED landscape, pool, and/or spa lights. The system can include an overlay indicating the color shows available to select from. A selector adjacent to the overlay can be positioned to select one of the color shows. The system includes a microcontroller in communication with the selector and a triac circuit in communication with the microcontroller. The microcontroller controls the LED landscape, pool, and/or spa lights using the triac circuit in response to the position of the selector.