目 录
摘 要 
关键词 
Abstract 
Key words 
1 绪论 
1.1 选题的目的与意义 
1.2简述模拟信号与数字信号 
2 设计任务与要求 
2.1 设计任务 
2.2  基本要求 
3 总体方案设计与方案论证 
3.1总体方案设计 
3.2 方案论证与选择 
3.2.1 无线传输方式的选择 
3.2.2 模数转换 
3.2.3 数模转换 
3.2.4 数模转换输出的放大电路的选择 
3.2.5 控制处理器的选择 
3.2.6 软件检错方式的选择 
4 硬件电路与软件设计的实现 
4.1 硬件电路的实现 
4.1.1 控制处理器外围电路 
4.1.2 红外发射电路的实现 
4.1.3 红外接收电路的实现 
4.1.4 模数转换电路的实现 
4.1.5数模转换电路的实现 
4.1.6滤波电路的实现 
4.2 软件设计 
4.2.1 发射机软件设计 
4.2.2 接收机软件设计 
5 系统调试与调试中的问题 
5.1 模数转换的调试 
5.2 红外发射接收的调试 
5.3 数模转换的调试 
5.4 调试过程的问题 
6 测试结果 
6.1 测试实物图 
6.2 模拟信号源输出的波形图 
6.3 接收机还原的模拟信号波形 
6.4 接收机输出波形与模拟信号源输入波形图 
6.5 数字信号无线传输波形图 
7 结论 
参考文献 
致 谢 
附 录 
附录1 实物图 
附录2  PCB图 
附录3 抽样定理的证明 
附录4 程序 
附录4.1 发射机程序 
附录4.2 接收机程序 



摘 要
本文旨在设计与实现一款基于STM32的数模混合同传装置，该装置能够实现对模拟信号与数字信号的同步传输与处理。首先，本文简述了模拟信号与数字信号的基本概念及其特点，明确了数模混合传输的必要性和应用场景。随后，根据设计任务与要求，制定了总体方案设计，并详细论证了方案的可行性。装置设计过程中，采用了STM32微控制器作为核心控制单元，结合模拟信号调理电路和数字信号处理模块，实现了对信号的采集、转换、传输及处理。通过实物制作与测试，验证了装置的可靠性和稳定性，并对其进行了优化与调试。本文的研究成果不仅为数模混合信号的传输提供了有效的解决方案，也为相关领域的研究与应用提供了参考。
关键词：STM32；数模混合；同传装置；模拟信号；数字信号
Abstract
This paper aims to design and implement a digital-analog hybrid transmission device based on STM 32 to realize the synchronous transmission and processing of analog and digital signals. Firstly, this paper briefly describes the basic concepts and characteristics of analog and digital signals, and clarifies the necessity and application scenarios of digital-analog hybrid transmission. Subsequently, according to the design tasks and requirements, the overall scheme design was formulated, and the feasibility of the scheme was demonstrated in detail. In the design process of the device, the STM 32 microcontroller is adopted as the core control unit, combined with the analog signal conditioning circuit and the digital signal processing module, to realize the signal acquisition, conversion, transmission and processing. The reliability and stability of the device were verified through physical production and testing, and it was optimized and debugged. The research results of this paper not only provide an effective solution for the transmission of digital-analog hybrid signals, but also provide a reference for the research and application in related fields.
Key words: STM 32; digital-analog mixing; simultaneous transmission device; analog signal; digital signal