LED Luminaire Wireless Control Circuit
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Solution Overview
Problem
Existing LED luminaire solutions face challenges in cost-effectiveness and energy efficiency due to the need for ballasts in ballast-compatible LED lamps, which require frequent maintenance and consume extra power, while AC mains-operable LED lamps lack compatibility with existing fixtures. Additionally, daylight harvesting systems suffer from poor design, calibration issues, and high costs, limiting energy savings and adoption.
Innovation Solution
An LED luminaire design incorporating a full-wave rectifier, power switching driver, electric current controller, and detection and control circuit that converts AC mains voltage to DC, suppresses electromagnetic interference, and integrates a wireless luminaire controller for remote control and energy management, enabling efficient energy use and compatibility with AC mains without the need for ballasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ballast-compatible LED lamps are used to replace fluorescent lamps, then installation is straightforward without rewiring, but total cost of ownership increases due to frequent ballast maintenance and replacement
Solution Approach 1:
The patent removes the ballast component entirely from the lighting system by designing LED lamps that can operate directly from AC mains power. This extraction eliminates the maintenance burden and compatibility issues associated with ballasts while maintaining straightforward installation by directly replacing fluorescent lamps without requiring ballast removal or rewiring.
Solution Approach 2:
The LED lamp is designed to be self-sustaining by integrating all necessary power conversion and control circuits within the lamp itself. The lamp can independently operate from AC mains without external ballast assistance, performing its own power regulation and protection functions, thereby eliminating the need for separate ballast maintenance.
2Ease of manufacture
If ballast-compatible LED lamps are used, then initial cost is low, but energy efficiency decreases due to constant power consumption by the ballast
Solution Approach 1:
The ballast component that causes continuous energy consumption is completely removed from the system. The LED lamp operates directly from AC mains with integrated power conversion circuitry that only consumes power when the lamp is actively illuminating, eliminating the parasitic energy drain of a constantly powered ballast.
3Loss of energy
If AC mains-operable LED lamps are used, then energy efficiency improves and maintenance is reduced, but compatibility with existing fixtures decreases
Solution Approach 1:
The LED lamp is designed with universal compatibility by incorporating an integrated power system that can operate directly from AC mains while maintaining the physical and electrical interface standards of traditional fluorescent lamps. This multi-functionality allows the lamp to work in existing fixtures without modification while providing superior energy efficiency.
4Loss of energy
If daylight harvesting systems are implemented, then energy savings potential increases, but system cost and complexity increase due to poor design and calibration requirements
Solution Approach 1:
The LED lamp incorporates integrated sensors and control circuitry that automatically detect ambient light conditions and adjust output accordingly. The system performs self-calibration and requires no external wiring or complex installation, providing daylight harvesting functionality while maintaining simplicity and reducing overall system cost.
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 cost-effective, energy-efficient LED luminaire that reduces maintenance costs, enhances energy savings, and simplifies installation with wireless control, ensuring compatibility with AC mains and optimizing lighting levels based on ambient light conditions.
Implementation Method 1
a full-wave rectifier configured to convert a line voltage from the AC mains into a first direct-current (DC) voltage
Implementation Method 2
an input filter configured to suppress electromagnetic interference (EMI) noise
Data Source
AI summary
An LED luminaire comprises a power switching driver, an electric current controller, LED array(s) powered by the electric current controller, and a detection and control circuit. The detection and control circuit comprises comparator(s), a voltage regulator circuit, and a pair of low-voltage input/output ports receiving an external voltage. The detection and control circuit is configured to extract a controllable feedback signal voltage from an output voltage coupled from the power switching driver, an output current driving the LED array(s), and the external voltage and to couple to the electric current controller to change the output current driving the LED array(s). The external voltage comprises a voltage sent from a wireless luminaire controller, which comprises a wireless module and a meter and control unit. The wireless luminaire controller is configured to receive commands from the wireless module, to control the LED luminaire, and to measure in response to the commands.