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目录
1. 系统方案的设计及论证
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1.1 ADC 前置电路的论证与选择
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1.2 供电电路的论证与选择
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1.3 显示模块的论证与选择
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1.4 频率测量方案的论证与选择
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2. 理论分析与计算
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2.1 THD 计算分析
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2.2 采样点数分析
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2.3 采样频率分析
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2.4 ADC 与 DMA 传输分析
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3. 电路与程序设计
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3.1 硬件设计
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(1) 系统总体结构框图
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(2) 硬件电路设计
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3.2 程序结构与设计
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(1) 程序控制流程图
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(2) 程序软件设计
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4. 结论与心得
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5. 参考文献
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附录一:主要原理图
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附录二:测试方案与测试结果
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1. 测试方案
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(1) 硬件测试
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(2) 程序测试
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2. 测试仪器
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3. 测试结果
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(1) 测试结果
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(2) 测试分析和结论
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附录三:实物展示
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