| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === High intensity light emitting diodes (LEDs) are attractive candidates for replacing conventional light sources such as incandescent lamps and fluorescent lamps. LEDs have substantially higher light conversion efficiencies than incandescent lamps and longer lifetimes than both types of conventional light sources. Finally, LEDs require lower voltages than fluorescent lamps, and hence, are better suited for applications in which the light source must be powered from a low-voltage DC source. On the other hand, touch panel technologies are increasing utilized in consumer electronics due to the popularity of smart phones and flat panel personal computers. Moreover, wireless communication protocols enables easy connection, therefore offers advantages include product interoperability, vendor independence, and accessibility to broader markets.
In this thesis, a LED lighting control system based on the ZigBee wireless network is proposed. The presented system includes three RGB LED light bars and one white LED light bar, a capacitive touch panel, ZigBee communication modules for remote control and a flyback auxiliary power supply. ZigBee is a low cost, low power wireless technology specially intended for medium data rate sensor networks. Using the touch panel as the input interface, user can arbitrary dim the brightness and change the color of the LED light bars. The hardware and software design will be presented in detail. The experimental and application results have shown that ZigBee technology is suitable for wireless control in home lighting and proved that the presented wireless sensor network has a more vast range of prospects in home automation and scenario lighting.
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