基于PIC16F87X声源定位系统设计与实现
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密 惠 保
【摘 要】
本文介绍了声源定位技术的研究现状及发展趋向，阐述了PIC16F87X系列单片机的理论知识，基于声达时间差的声源定位理论基础和声源信号的接收及处理。设计出一个系统，根据不同声音的特定频率，对其信号进行处理，提取出有用信号，进行一些声音判别算法的处理，通过单片机控制器装置的精确转位，能够精确定位出声源的位置，从而进一步阐述了基于声达时间差的声源定位的设计方案，并绘制了原理图，撰写了程序源代码。实现并完成了实物的制作。
关键词：声达时间差；单片机
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【Abstract】
This article describes the sound localization technology Research and development trend, expounds the theory of knowledge PIC16F87X single chip, based on sound up to the time difference of sound localization and sound theoretical basis for receiving and processing the source signal. Design a system, depending on the particular sound frequency, their signals are processed to extract the useful signal, for some of the voices of the algorithm processing, through the micro-controller unit of the precise translocation, can pinpoint the location of the sound source, further explained the time difference based sound of the sound source location design, and draw a diagram, write the program source code. And completed the physical realization of the production.
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Keywords：TDOA （Time Difference of Arrival） Single Chip Microcompute
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目 录
绪论............................................................... 1
1 PIC16F87X系列单片机的理论知识.................................... 2
1.1概述............................................................ 2
1.2 PIC单片机主要性能.............................................. 2
1.2.1 PIC16F877A特性............................................... 3
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1.2.2 PIC16F877A的各引脚及其功能................................... 4
1.2.3 PIC16F877A的特殊内嵌功能..................................... 6
1.2.4 PIC16F877A输入输出区......................................... 6
1.3 PIC单片机编程系统.............................................. 7
1.3.1指令概述...................................................... 7
1.3.2 PIC单片机C语言编程简介...................................... 7
1.3.3 PIC单片机C语言编程环境...................................... 8
1.3.4 PIC 单片机的 C 语言原程序基本框架........................... 11
1.3.4.1 基本框架.................................................. 11
1.3.4.2 基本变量类型.............................................. 11
2基于TDOA声源定位的理论基础...................................... 13
2.1 声源定位技术分类.............................................. 13
2.2 TDOA方法步骤.................................................. 13
2.3 声源信号的接受及处理.......................................... 14
2.3.1 自然声源信号特点............................................ 14
2.3.2 信号的接受及处理............................................ 14
2.4 转向的控制原理............................................... 17
2.5舵机控制....................................................... 18
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2.6 系统的组成及框图............................................. 19
2.７ 硬件系统.................................................... 19
3 程序软件........................................................ 22
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3.1 工作原理...................................................... 22
3.2 软件流程图.................................................... 22
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3.3 软件代码...................................................... 23
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结论.............................................................. 25
参考文献：........................................................ 26
致谢.............................................................. 27
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