MSP430近场移动声源定位系统的实现  

Near field mobile sound location system realization based on MSP430

作　　者：杨云[1] 王君波 范中磊[1] 

机构地区：[1]长安大学信息工程学院,陕西西安710064 [2]欧比特控制工程股份有限公司,广东珠海519080

出　　处：《计算机工程与设计》2014年第6期1941-1945,1967,共6页Computer Engineering and Design

基　　金：中央高校基金项目(CHD2010038)

摘　　要：以MSP430为核心设计和实现一种移动声源定位系统。系统以两片MSP430F149为处理芯片,实现声源和检测电路,声源电路由两片NE555芯片自激振荡驱动蜂鸣器发射声音信号,检测电路由4个麦克风拾音器组成阵列接收和处理声音信号,电路模块间通过CC1101无线方式通信。软件基于任意三角形声音到达时差原理,设计和实现移动声源定位算法。实验测试和分析系统的功能和性能结果表明,在室温实验室近场环境中,系统能够完成移动物体的一般定位控制需求,误差在允许范围内。A mobile sound source location system based on MSP430 is designed and implemented.Two MSP430F149 are taken as processing chip in the sound source and detector modules,the sound source module based on two NE555 is formed by the selfexcited oscillation driving buzzer to emission sound signal,the detection module is formed by four microphones array to receive and process sound signal,using CC1101 wireless communication between two electrical modules.Software is based on the arbitrary triangle time difference of arrival location algorithm.Finally,the test is acted to analyze the functionality and performance of this system.Results show the location system can achieve the general positioning of the moving object in a near field laboratory environment at room temperature,the error is in the allowable range.

关 键 词：声音定位算法 移动声源 MSP430 自激振荡 CC1101无线通信 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]