سال انتشار: ۱۳۸۴
محل انتشار: دومین کنفرانس بین المللی فناوری اطلاعات و دانش
تعداد صفحات: ۸
Farzam Farbiz – Assistant Professor, Computer Engineering and Information Technology department of Amirkabir University of Technology, Hafez Ave. Tehran 15914, Iran
Adrian David Cheok – National University of Singapore, NUS
Yue Li – National University of Singapore, NUS
This paper describes a novel system for indoor positioning and navigation with particular benefits for mobile and wearable computers. It can seamlessly extend outdoor GPS tracking to the indoor environment. In a novel manner, fluorescent light is used as the medium to transmit information, which is encoded by using a pulsefrequency modulation technique. The user receives the encoded light information through a photo-receiver which gives positioning information for indoor mobile and wearable computers. We design an economical transmitter circuit by adding few components to a commercial electronic ballast circuit for fluorescent lamps with price of less than 10 USD. The propose system can be used in indoor guidance and navigation applications.