基于无线传感器网络的语音通信系统设计与实现

Design and implementation of voice communication system based on wireless sensor network

针对无线传感器网络在语音方面的应用进行深入研究,提出一种基于无线传感器网络的语音通信系统。根据无线传感器网络工作原理和节点体系架构,设计了以嵌入式处理器MPC2194为核心,结合无线收发器CC1000、语音采集编码芯片CMX649以及存储芯片、电源等外围电路构建的语音无线传感器节点。重点讨论了系统结构、硬软件设计和协议栈开发等关键问题。并通过实验选择优化系统参数,从而实现高质量语音通信。

Aiming at the application of wireless sensor network in voice communication, this paper proposed a WSN-based voice communication system. Based on analysis of architecture and working principle of WSN, a node which adopted embedded processor MPC2194 as MCU, RF chip CC1000, codec CMX649 and storage core.power circuit as peripheral equipments was introduced. The design of system structure, hardware, software and protocols was discussed in detail. The system parameters were optimized through experiments, so as to achieve high-quality speech communication.