LED Illumination System with Modular Control for Dynamic Luminance
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Solution Overview
Problem
Conventional silicon dimmer circuits are unable to dynamically adjust LED luminance and color temperature, and their complex design makes them expensive and unsuitable for various LED illuminating systems.
Innovation Solution
A light emitting diode (LED) illuminating system comprising a signal inputting module, driving module, switch module, sampling module, and control module, which includes a multiplexing switch, transistors, operational amplifiers, and microprocessor units to generate and control driving signals for adjusting LED luminance and color temperature in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional silicon dimmer circuits are used, then LEDs can be switched on or off, but luminance and color temperature cannot be dynamically adjusted
Solution Approach 1:
The patent divides the LED illuminating system into multiple independent control units, each responsible for specific LEDs or LED groups. Each control unit includes a microcontroller, DAC, and switching elements that can independently adjust luminance and color temperature. This segmentation allows dynamic adjustment capabilities while keeping each control unit's complexity manageable and modular.
Solution Approach 2:
The patent implements dynamic adjustment of LED luminance and color temperature through real-time control signals. The system uses DACs to generate analog control signals that continuously vary the driving current to LEDs, enabling smooth transitions between different luminance levels and color temperatures rather than fixed switching states.
2Ease of operation
If conventional silicon dimmer circuits are designed with adjustment capabilities, then luminance control is possible, but the design becomes highly complicated and expensive
Solution Approach 1:
The patent designs a universal control unit that can simultaneously control multiple parameters including luminance, color temperature, and switching operations. Each control unit is equipped with a microcontroller that executes comprehensive control algorithms and a DAC that generates multi-level analog signals, allowing a single unit to perform functions that would otherwise require multiple separate circuits.
Solution Approach 2:
The patent replaces complex analog dimmer circuits with a digital control approach using microcontrollers and DACs. The microcontroller generates digital control signals that are converted to analog signals by the DAC, providing precise luminance control through software algorithms rather than complex analog component networks, thereby simplifying the overall circuit design.
3Adaptability or versatility
If conventional silicon dimmer circuits are used, then the system is simple, but it cannot be applied to various LED illuminating systems with different requirements
Solution Approach 1:
The patent employs modular control units that can be independently manufactured and then configured for different LED illuminating applications. Each module contains all necessary components (microcontroller, DAC, switching elements) to function as a complete control unit, allowing standardization of the basic module while adapting it to different system requirements through configuration rather than redesign.
Solution Approach 2:
The patent achieves adaptability to various LED illuminating systems by allowing configuration of control parameters such as luminance range, color temperature range, and switching characteristics through software or programmable settings. The hardware architecture remains consistent, but the operational parameters can be changed to suit different LED types and application requirements, reducing manufacturing costs through standardization.
Data Source
AI summary
A LED illumination system includes a signal inputting module, a driving module, a switch module, an illumination module, a sampling module, and a control module. The signal inputting module receives a selection signal that corresponds to one specific color temperature and generates a first voltage signal based on the selection signal. The driving module generates a driving signal based on a color temperature adjusting signal. The switch module includes a plurality of LED control units whose activation status that the illumination module responds to illuminate. The sampling module samples the output current of the switch module and generates a second voltage signal correspondingly. The control module receives the first voltage signal and the second voltage signal and generates a control signal correspondingly. And the control module relays the control signal. The switch module additionally controls its illumination status based on the driving signal and the control signal.