Wireless sensor networks based public addressing system

This paper explains the idea of using wireless sensor networks based system for public addressing system. In this paper, we describe how to transmit audio without wires using a simple concept of wireless sensor network. Though wireless sensor networks are meant for transmitting low-data rate, in our work we extended it to transmit audio. In this work, we have considered Jennic JN5139R1 micro-controller for the implementation system. Jennic micro-controller ported with contiki OS with μIP protocol of IPv6 and UDP service libraries. Novelty of this work is using all open source tools to develop the public addressing system. The work carried out here is transmitting and receiving audio data between two wireless nodes that are interfaced serially with PC.