BLI - NAV embedded navigation system for blind people

Abstract

BLI -NAV is a blind navigation system exclusively designed for blind people. The system with portable and self-contained feature allows the blind people to travel through familiar and unfamiliar environment. The proposed system consists of hardware and software components used for effective navigation process. The entire system is assembled into an embedded system. In the embedded system two of the major component known as GPS receiver and path detector used for receiving the current position of the user and find the shortest path to the destination. The navigation process of the system can start when the user gives the destination as voice command. The voice recognizer of the system will convert the voice information into respective string format. The converted string will be mapped into GIS database to identify the location into the map. The path detector will find the shortest path between two end points using critical path algorithm. The distance between the locations and intermediate position will be informed through voice command. The obstacles and hazards of the path will also be identified while travelling and the respective information will be given to the user through voice command. GIS database used to store the details of all spatial and map information. The user can change map information with respective to their country and city. The usage of the device will be easy and user-friendly to any age group with any category.