Abstract
This invention proposes a novel light emitting diode (LED) lighting (dimmable) control scheme to transmit digital data through a magnetic field generated by a flyback driver that utilizes digitized data to adjust the brightness of LEDs for potential applications. This design would eliminate the cost of establishing wireless transmission hardware by simply relying on the magnetic field for communication to meet the management of the lighting control system. The method used a frequency-shift keying (FSK) technique on the secondary side of the system to send digitized data to the primary side. The primary side of the system interpreted the control commands by detecting the frequency change, and the corresponding lighting control was decoded. The inner communication connected the primary and secondary sides to the transformer through wirelessly transmitted data, which eliminated the requirements of optical coupling and peripheral circuits. For extended applications, the designed system can be combined with sensors at home for lighting management with the benefits of energy saving and potential emergency warnings.
Highlights
The lighting market has slowed down due to the maturity of technologies; due to advances in semiconductor technology, light emitting diode (LED) lamps have replaced traditional lamps
To eliminate the secondary circuit and optocoupler, the NP is transferred to the secondary side NS, which starts to supply energy to the output capacitor and primary side regulation (PSR) flyback converter can be stably applied to LED lamps [22]
We propose an energy management system with the function of lighting control and the potential of emergency notification (Figure 4)
Summary
The lighting market has slowed down due to the maturity of technologies; due to advances in semiconductor technology, LED lamps have replaced traditional lamps. In the luminaire driver topology, linear actuators have the advantage of low cost They are often used in inexpensive lighting fixtures but have poor efficiency. Multisegment linear drivers, such as switching-type drivers, can improve their efficiency [2]. Most smart lighting highly depends on wireless devices or extra lines to transmit control signals. LED states by using extra wireless devices and control of LED lighting through terminal lighting management. This design did not consider the lack of functionality when a wireless transmission device fails. Considering the limitations of traditional approaches, current research improves and innovates the technology of data transmission incorporated in lighting control. The transmitted data are interpreted, and the LED driving current is modulated for the purpose of saving energy
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