Abstract: Visually impaired people have difficulty accessing information about public transportation systems. Several systems have been developed for assisting visually impaired and blind people to use the public transport system. Most systems provide only one-way communication and require high-cost and complex equipment. The purpose of this project is to reduce the difficulties faced by visually impaired people when using public transportation system; this is achieved by using an interactive wireless communication system. The system comprises of three modules: a user module, a bus station module and a bus module interconnected to each other. The connection between the modules is established via ZigBee. The blind person in the bus station is provided with a ZigBee unit which is recognized by the ZigBee in the bus station. . The blind gives the input about the place he has to reach using microphones and the voice recognition system. The bus unit gives information of the buses parked inside the bus station to the bus station unit. The bus with nearest time slot would be acknowledged to the blind unit of the blind man by the bus station. . This input is then passed to the bus station module and the bus numbers corresponding to the location provided by the blind is generated. These bus numbers are converted into audio output using text to speech converter in the blind module. The blind then select the bus in which he wants to travel. Whenever bus has entered into bus station; the bus module notifies the bus station module. Then ZigBee transceiver in the bus station module notifies the blind person that the bus has reached the station. The bus station also notifies the bus driver, the presence of a blind person in the station via its Zigbee module.
Keywords: ZigBee Systems, Speech Recognition System (HM2007),Text to Speech Converter.