AC Two-Wire LED Lamp String Synchronous Dimming
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Solution Overview
Problem
Existing LED high voltage lamp strings lack the ability for consumers to freely switch between colors and do not offer synchronous dimming and color adjustment functions, limiting their versatility and customization options.
Innovation Solution
An AC two-wire LED high voltage lamp string with a high voltage controller and lamp string group, featuring a switch control circuit and microcontrol units for waveform modulation and zero-crossing detection, enabling color change, timing, and light control through a controller and bulb-end demodulation, allowing for series and parallel connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single-color LEDs or separate color LEDs are used, then the structure is simple and easy to manufacture, but consumers cannot freely switch between colors
Solution Approach 1:
The patent applies multi-functionality by integrating multiple LED types (cold white, warm white, red, green, blue) into a single lamp string module, allowing the same physical structure to provide diverse color options. The control system can switch between different color combinations and modes, making one device serve multiple lighting purposes.
Solution Approach 2:
The patent introduces a controller as an intermediary device that manages the complexity of color switching and lighting control. The controller receives user input and translates it into appropriate LED activation patterns, isolating the user from the underlying circuit complexity while enabling versatile color selection.
2Adaptability or versatility
If separate control circuits are added for each LED type, then color switching capability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the control of multiple LED types into a single integrated control circuit within the controller. Instead of separate control circuits for each LED type, one controller manages all LED groups through unified signal processing, reducing overall system complexity while maintaining full color adjustment flexibility.
Solution Approach 2:
The controller is designed as a universal control unit that can handle multiple LED types and control modes (color switching, dimming, timing, flashing) through a single device, eliminating the need for multiple specialized control circuits and simplifying the overall system architecture.
3Adaptability or versatility
If synchronous dimming and color adjustment functions are added, then the versatility is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the lighting system into modular components: LED lamp strings, lamp string groups, and a controller. Each module can be manufactured and tested independently, then assembled together. This segmentation simplifies the manufacturing process by allowing specialized production of each component before final integration.
Solution Approach 2:
The controller is designed as a universal control unit that handles multiple functions (dimming, color adjustment, timing, flashing) through integrated circuitry, reducing the number of separate components needed and simplifying the assembly process while providing comprehensive light control functionality.
4Ease of operation
If high voltage AC direct input is used, then the ease of operation is improved, but the reliability decreases due to lack of overload protection
Solution Approach 1:
The patent implements self-service protection mechanisms where the controller and protection circuit automatically monitor power consumption and detect overload conditions. When overload is detected, the system automatically interrupts power supply without requiring user intervention, providing both simplicity of operation and enhanced reliability through automated safety features.
Solution Approach 2:
The patent incorporates feedback mechanisms through overload protection circuits that continuously monitor the power input and operating conditions. When abnormal conditions are detected, the system provides feedback signals to interrupt power supply or adjust operation, ensuring reliable protection while maintaining simple AC direct input operation for the user.
Data Source
AI summary
An AC two-wire LED high voltage lamp string with synchronous dimming and color adjustment comprises a high voltage controller and a lamp string group, wherein the high voltage controller comprises a control box, and a first power supply module, a switch control circuit and a first microcontrol unit which are arranged in the control box and connected in sequence; the first power supply module is connected with the switch control circuit and the first microcontrol unit; a second microcontrol unit. The present invention modulates and encodes a high voltage sine wave using the switch control circuit at the controller end and demodulates the sine wave at a bulb end to realize the functions of color change timing, flashing, timing and light control of lamp strings. The lamp strings can be used individually or connected in series and in parallel for use, to satisfy different needs of consumers.