声音定位系统的设计
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密 惠 保
声音定位系统的设计(任务书,开题报告,论文12000字)
摘要
随着科学技术的不断发展，声音定位在现代军事有十分重要的地位，在民用生活中也有一定的涉及。在很多复杂环境下，当光学仪器的作用受到限制，此时利用声学原理往往能够取得更好的成效，在这种时候，声波的各种优势就能体现出来。目前，最常见的声音定位方法就是利用时间差来定位的TDOA方法。
本文旨在对声音定位做深一步的研究，了解声音定位的原理，并尝试着设计一个声音定位系统。本文利用单片机构成系统的核心部分，再构建声源模块、信号接收模块、信号处理模块、显示模块这几个模块，同时在几种定位算法中分析各个算法的优缺点，最后挑选出最适合本系统设计要求的方法来完成对声音的定位，并利用protues设计电路图并完成仿真。结果表明这种算法能比较精确的对声音来进行定位。最后本文对声音定位系统的发展前景有了一个自己独特的见解。
关键词：声音定位；单片机；protues仿真；TDOA
Abstract
With the continuous development of science and technology, sound positioning plays a very important role in modern military affairs, and it also involves certain aspects in civilian life. In many complex environments, when the role of optical instruments is limited, the use of acoustic principles can often achieve better results. At this time, the various advantages of sound waves can be reflected.The most common sound localization method is the TDOA method that uses time difference to locate.
[来源：http://www.think58.com]
This thesis aims to do a deeper research on sound localization, understand the principle of sound localization, and try to design a sound localization system. This article uses the core part of the microcontroller to construct the system, and then builds several modules: sound source module, signal receiving module, signal processing module, and display module. At the same time, the advantages and disadvantages of each algorithm are analyzed in several positioning algorithms, and the most suitable one is selected. The system design requires methods to complete the positioning of the sound and use protues to design the circuit diagram and complete the simulation. The results show that this algorithm can accurately locate the sound. Finally, this article has a unique view on the development prospects of the sound location system.
Keywords: audio positioning;MCU; protues simulation; TDOA
目 录
1 绪论 1
1.1研究目的及意义 1
1.2国内外研究现状 1
1.3本章小结 3
2 声音定位系统简介 4
2.1系统设计要求 4
2.2声音定位原理 4
2.3本章小结 6
3 设计方案选择与论证 7
3.1声源模块选用器件 7
3.2声音接收模块 7
3.3信号处理模块 9
3.4本章小结 11
4 电路原理图设计 12
4.1电路总框图 12
4.2单片机最小系统 12
4.3 声响模块 12
4.4声音接收模块 13
4.5信号处理模块 14
4.6本章小结 15
5 系统软件设计 16
5.1软件流程图 16
5.2仿真结果 17
5.3本章小结 17
6 结论 18
参考文献 20
致谢 21