Design of an interactive system for city bus transport and visually impaired people using wireless communication, smartphone and embedded system

There are millions of people over the world with some visual impairment or totally blind. Most of them face challenges every day, such as learning, walking and others. If they need to use the public transport, they depend on the good will of the people around them to help. In this paper, the author proposes a wireless interactive system composed by modules, which works with smartphone, embedded system and an application using voice message. The user module uses a smartphone with an application that is used for set the public transport line desired. This module communicates with a bus stop station module, and then a wireless link is created. Once the system is aware that there is a person with visual impairment on the station, it communicates with the module installed in the vehicle that attends the route requested, and it warns the driver with visual and an audible signal. The bus arrives at the station, the person boards the bus, and the wireless network is undone, waiting for a new request. The system proposed does not need to use Global System Position, and uses only microcontrollers, transceivers and extra electronics circuits.