Abstract
In This Paper, an Indoor navigation system is proposed for persons with visually disability that utilize VLC (Visible Light Communication) Technology. Using VLC we can provide precise locational coordinates or directions regarding their journey. Light Fidelity (Li-Fi) refers to the VLC technology. VLC is based on the concept that uses visible light as a means of communication enabling faster flow of information [1]. The principle of VLC is that it uses light as a medium to deliver high speed communication. The main idea is to create internal navigation system for the area to create automatic navigation for the visitor who are visually challenged. The Li-Fi is preferred over Wi-Fi because Wi-Fi is nothing but radio-telecommunication which effective within premises, while Li-Fi is effective for faster communication in restricted places without any hurdles. The concept of Li-Fi is used to give the navigation path for visually challenged person and particularly voice guidance of the walk way. Headphone is used to give the voice message to such people. The data is transmitted through the LED light which emits the visible light and an embedded system accepts from receiver. The received data is converted into audio format for the blind people. The suitability of system has been confirmed by means of useful prototype through a trail with blind person.
Highlights
Challanged people, either partially or toal blind, always struggle at public places like Bus stations, Railway Terminals, Hospitals, Malls etc
The main purpose of the Visible light communication (VLC) ecosystem is to give real time, accurate inputs and information on location and directions to its users so that they can reach their destination smoothly using the shortest path in an indoor space
In the Light Fidelity (Li-Fi) technology, the information transmission speed can be enhanced by multiple side by side data transfer using LED grouping or such arrangement
Summary
Either partially or toal blind, always struggle at public places like Bus stations, Railway Terminals, Hospitals, Malls etc. VLC enables flow or transfer of information and data using the visible light[1] This can help the visually challenged people to navigate at certain indoor places so that they can move without depending on anybody within such areas. While Wi-Fi uses radio-frequency for transfer of information, Li-Fi uses visible light for the same purpose It is superior over Wi-Fi. it is superior over Wi-Fi It offers a wider bandwidth channel for data transmission and higher data transfer speeds. In the Li-Fi technology, the information transmission speed can be enhanced by multiple side by side data transfer using LED grouping or such arrangement. In this case, each light emighting diode constituent of the bulb can carry or broadcast a separate or distinct flow of information.
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