基于到达时差的声音定位系统的研究与实现  

Research and development of sound localization system based on time difference of arrival

作　　者：韩毅[1,2] 吴初娜[1] 李龙飞[1] 

机构地区：[1]长安大学汽车学院,陕西西安710064 [2]青华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《计算机工程与设计》2010年第11期2462-2465,共4页Computer Engineering and Design

基　　金：长安大学校青年基金项目(06Z15)

摘　　要：为了解决机器人视觉定位的局限性,使其能精确判断出移动音源所处的位置,提出了一种由3路高精度拾音、2个单片机控制系统、移动发声装置和无线收发模块组成的声音定位系统的原理与实现方法。该系统采用基于到达时差的方法来确定移动音源的位置,先获得声音信号到达拾音器对的时间差,再根据到达时间差和拾音器的位置获得移动音源的位置。实验结果表明,该定位方法具有结构简单、精度较高等优点,可满足对机器人利用声音进行定位的需要。To solve the limitation of visual localization of robots and to locate moving sound source position accurately,a theory and implementation of sound localization system is presented which consists of three high accuracy pickup devices,two SCM control systems,a moving sound-generating mechanism and a wireless data transmission module.The system uses a method of time difference of arrival to locate the moving sound source position.Firstly,the time difference of sound signals arriving at two pickup devices is obtained,and then the moving sound source position is gotten according to the TDOA and the pickup devices positions.The result proves this localization method has the advantage of simple structure and high precision.It can fulfill the requiring of using sound signals to locate robot system.

关 键 词：声音定位 单片机控制 移动声源 无线传输 到达时差 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]