LED Lighting System Power Control Circuitry
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Solution Overview
Problem
Traditional LED lighting control methods require separate control pins or wires, wireless technologies, or master-slave modes, limiting flexibility and efficiency in adjusting brightness and power distribution across LED arrays.
Innovation Solution
An LED lighting system with power control circuitry that compares input power characteristics to pre-set conditions, generating control signals to adjust power provided to LED arrays, allowing for flexible control of brightness and power distribution without direct application of power source voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate control pins or wires are used to control LED lights, then control functionality is achieved, but device complexity increases
Solution Approach 1:
The patent combines the power transmission function and control signal function into a single wire. The power source transmits both power and control signals through the same wiring infrastructure, eliminating the need for separate control pins or wires. This is achieved by modulating the power signal itself to carry control information, thereby reducing device complexity while maintaining control functionality.
Solution Approach 2:
The power wire is given multiple functions: it serves both as a power transmission medium and as a control signal carrier. By encoding control information within the power signal characteristics (such as frequency, pulse width, or voltage levels), the same physical infrastructure performs dual roles, reducing the need for additional dedicated control wiring.
2Ease of operation
If wireless technology is used to control LED lights, then control flexibility is improved, but energy consumption increases
Solution Approach 1:
The patent merges power delivery and control communication into a single integrated system. Instead of using separate wireless communication channels that would consume additional energy, the control signals are embedded within the power transmission itself, allowing the LED to be controlled without requiring separate wireless communication hardware or additional energy expenditure for signaling.
3Device complexity
If master-slave mode is used where power source voltage directly controls LEDs, then control is simplified, but control precision and flexibility are reduced
Solution Approach 1:
The patent utilizes changes in power signal parameters (such as frequency, pulse width, voltage levels, or current characteristics) to encode control information. By modulating these parameters, the system achieves precise control over LED brightness and operation while maintaining a simple master-slave structure. The LED responds to specific parameter changes in the power signal, enabling flexible and precise control without complex additional circuitry.
4Ease of manufacture
If power source voltage is applied directly to LEDs for control, then control implementation is simple, but adaptability to different control scenarios is limited
Solution Approach 1:
The system achieves adaptability by utilizing multiple power signal parameters that can be independently modulated. Different control scenarios can be implemented by changing specific parameters such as frequency for dimming, pulse width for switching, or voltage levels for brightness control. This allows a single simple circuit design to adapt to various control requirements without requiring different hardware configurations.
Data Source
AI summary
An LED lighting system is provided for connection to a variable power source providing input power, the LED lighting system having at least one power analyzing and processing circuitry connecting to the variable power source, and being configured to identify one or more characteristics of the input power, where the characteristics are selected from amplitude, frequency and pulse width of the input power, compare one or more of the characteristics of the input power to preset control criteria either in hardware or software or both to yield a comparison result, and then control the current control circuitry according to the comparison result.