基于虚拟仪器的简易声源追踪系统设计  

Design of Simple Sound Track System Based on LabVIEW

作　　者：王莉[1] 刘平方[1] 李艳贞[1] 惠延波[1] 

机构地区：[1]河南工业大学电气工程学院

出　　处：《计算机测量与控制》2015年第6期2116-2119,共4页Computer Measurement &Control

基　　金：国家"十二五"科技支撑计划(2012BAF12B13);河南省教育厅自然科学项目(13A535181)

摘　　要：为了在大型粮仓中局部出现害虫鸟类时可以快速找出其位置,解决目前声源定位设备成本高、计算量大实时性差的问题,对波达声差(TDOA)定位技术和互相关时延算法进行研究,提出一种改进了广义互相关时延估计算法,设计实现一种基于虚拟仪器的简易声源追踪系统根据害虫害鼠发出声音进行位置追踪进行粮仓管理;详细介绍了系统软硬件设计实现,系统可以实现参数设置、声源坐标的实时获取、文件存储、三维动态和数值显示等功能;实验结果显示,该系统具有实时性好、精度高、计算量小、工作稳定等特点。Aiming to quickly identify the location of pests and rats existing in the large granary and solve the problem of the present sound localization equipment of high cost, large amount of calculation and poor real--time performance. The TDOA localization technique and time delay estima- tion based on GCC algorithm is studied and put forward an improved generalized cross--correlation time delay estimation algorithm. A sound source tracking system based on LabVIEW was designed and implemented to find the location of pests and rats and manage granary according the voice of pests and rodent. System hardware and software design was introduced in detail. The system can achieve the function of parameter settings, the sound source coordinate real--time access, file storage, and three--dimensional numerical dynamic display. The experiment showed that the system has good advantage of real--time, smaller amount of calculation, high precision, stable work.

关 键 词：虚拟仪器 声源定位 波达时差 广义互相关 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置]