Bidirectional LED Light String Using Power-Line Pulses and Fewer Switches
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Solution Overview
Problem
Existing bidirectional light-emitting technologies require four sets of controllable switches for over 5V voltage control, increasing circuit complexity and cost.
Innovation Solution
A bidirectional colorful light system using only two sets of controllable switches to manage four sets of controllable switches, allowing for both forward and reverse currents, and achieving color control by loading pulse signals onto the power line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If four sets of controllable switches are used for over 5V voltage control, then the voltage control capability is improved, but the circuit complexity increases
Solution Approach 1:
The bidirectional light source module serves multiple functions: it can operate in forward conduction mode to drive LED colorful light groups and in reverse conduction mode to drive warm white light groups. This multi-functionality eliminates the need for separate control circuits for different voltage levels, reducing circuit complexity while maintaining full voltage control capability
Solution Approach 2:
The patent utilizes reverse current conduction through the bidirectional light source module to achieve a second spectral range. By allowing current to flow in reverse direction, the system can drive different LED groups (warm white vs. colorful LEDs) without requiring additional control switches, thus simplifying the circuit while expanding functionality
2Measurement precision
If four sets of controllable switches are used, then the control precision is improved, but the number of control ports increases
Solution Approach 1:
The bidirectional light source module functions as a universal control interface that handles both forward and reverse current modes. A single control port can regulate both LED colorful light groups and warm white light groups by controlling the bidirectional module's conduction direction, reducing the number of control ports from four to two while maintaining precise control capability
Solution Approach 2:
The control functions for forward and reverse current modes are merged into a single bidirectional light source module. This consolidation allows one control port to manage what previously required four separate control ports, simplifying the control architecture while preserving precise control over all LED groups
3Adaptability or versatility
If bidirectional light sources are used with forward and reverse currents, then the spectral range is expanded, but the device complexity increases
Solution Approach 1:
The system exploits reverse current flow through the bidirectional light source module to activate a second spectral range (warm white light groups). By utilizing the reverse conduction capability of the bidirectional module, the patent expands the spectral output without adding complex control infrastructure, as the same module handles both forward and reverse modes
4Device complexity
If only two sets of controllable switches are used, then the device complexity is reduced, but the control capability may be limited
Solution Approach 1:
The two control ports connected to the bidirectional light source module provide universal control capability. Each control port can independently regulate different LED groups by controlling the bidirectional module's operation mode, ensuring that reduced device complexity does not compromise control capability over all light groups
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
Simplifies the control circuit, expands the spectral range of the light source, and reduces the number of required control ports by integrating reverse current to create additional spectral ranges using only two power lines.
Implementation Method 1
the light module triggered by power-line pulse signals comprises an LED colorful light group and an LED driver that drives the LED colorful light group based on power-line pulse signals loaded on power lines
Implementation Method 2
the bidirectional light source comprises a light module triggered by power-line pulse signals and a reverse light module, with the light module triggered by power-line pulse signals and the reverse light module connected in parallel at the first port and the second port of the bidirectional light source
Data Source
AI summary
A bidirectional colorful light triggered by power-line pulse signals connected in series and parallel includes a bidirectional luminous light string triggered by power-line pulse signals, a first controllable switch, a second controllable switch, a third controllable switch, and a fourth controllable switch. The bidirectional luminous light string triggered by power-line pulse signals comprises a plurality of bidirectional light sources, which comprises a light module triggered by power-line pulse signals and a reverse light module. The light module triggered by power-line pulse signals comprises an LED colorful light group and an LED driver that drives the LED colorful light group based on power-line pulse signals loaded on power lines of the bidirectional luminous light string triggered by power-line pulse signals. This invention achieves a bidirectional colorful light driven by power-line pulse signals through the control of the second and fourth controllable switches, simplifying the control circuit.