Indoor Navigation System For Visually Impaired People Using Li-Fi

Abstract

Indoor navigation is convenient for everyone, and it is particularly requisite for the visually impaired. The project proposes an indoor navigation system for the visually impaired guided by audio through Visible Light Communications (VLC) technology with employs LED lights and correcting the values of geomagnetic sensors integrated in the smartphone. Light Fidelity (Li-Fi) technology is used by the proposed system for the wider range of transmission of data than wi-fi. The usage of visible light for transmitting the data encompasses a wide variety of advantages and eliminates most problems of communication caused by the electromagnetic waves outside the visible spectrum. The data transmission occurs only when the person has entered the room. It guides the person inside the room to walk confidently with the knowledge of each and every obstacles with the help of audio feedback. The smartphone calculates the optimal path to a destination and speaks to the visually impaired.