LED Illumination Controller Using Unitary Command Structure
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Solution Overview
Problem
Existing LED illumination control systems, such as those using DALI, have complex command structures and require multiple commands for simple operations, making them inefficient for controlling three-color LED modules.
Innovation Solution
A simple digital command structure for LED illumination control using a processor-based controller with a unitary command input that includes color level values and a fade rate, allowing for pulse modulation of signals for red, green, and blue colors, enabling efficient control of three-color LED modules through a serial or wireless interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing digital interface systems like DALI are used for LED illumination control, then comprehensive control capability is achieved, but command structure complexity increases and multiple commands are required for simple operations
Solution Approach 1:
The patent combines multiple control parameters (color temperature, illumination level, fade rate) into a single unitary command structure. Instead of requiring separate commands for each parameter as in traditional DALI systems, the invention merges all these controls into one command that can be transmitted and executed in a single operation, thereby simplifying the control interface while maintaining comprehensive control capability
Solution Approach 2:
The unitary command structure is designed to handle multiple functions within a single command format. It can control color temperature, illumination level, and fade rate simultaneously, making the system versatile and reducing the number of different command types needed compared to traditional systems that require separate commands for each control function
2Productivity
If traditional multi-command structures are used, then precise control is achieved, but control efficiency decreases and time consumption increases
Solution Approach 1:
The system pre-structures the command format to include all necessary control parameters (color temperature, illumination level, fade rate) in a standardized unitary format. This preliminary organization of control data allows the controller to execute all control functions in a single operation without requiring multiple sequential commands, thereby improving productivity and reducing time loss
Solution Approach 2:
The unitary command structure enables continuous control action by transmitting all control parameters in one uninterrupted command sequence. This eliminates the gaps and delays associated with multiple separate commands, maintaining continuous useful action from command transmission to execution, thereby improving control efficiency and reducing time consumption
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
The solution provides a straightforward method for controlling three-color LED modules, enabling smooth color fades and accurate color matching with reduced complexity, suitable for smaller to mid-sized architectural spaces, using pulse frequency modulation and logarithmic algorithms.
Implementation Method 1
The first color control output pulse modulates a first signal that powers a first illumination level for a first color, the second color control output pulse modulates a second signal that powers a second illumination level for a second color, and the third color control output pulse modulates a third signal that powers a third illumination level for a third color
Implementation Method 2
LED illumination control
Implementation Method 3
The three colors may be red, green, and blue
Data Source
AI summary
Disclosed is an illumination controller for use with at least one three-color LED module. The illumination controller includes a command input, three color control outputs, and a processor. The command input receives a unitary illumination control command having first, second and third color level values, and a fade rate value. First, second, and third color control outputs pulse modulates respective first, second and third signals that powers an illumination level for each color. The processor, responsive to a control command, transitions the first color control output in accordance with the received command's first color level value and the fade rate value, transitions the second color control output in accordance with the received command's second color level value and the fade rate value, and transitions the third color control output in accordance with the received command's third color level value and the fade rate value. The three colors may be red, green, and blue.