摘要随着用电规模的扩大、用电设备的增多，电气设备尤其是电子设备对电能质量的要求越来越高。如何提高电能质量、保证电力系统运行稳定性成为电力人的主要工作。设计电压监测系统就是在这样的背景下提出的。65273

课题将完成基于DSP的多路电压监测系统设计，主要是监测电路的硬件设计工作。硬件电路实现多路电压信号的采样，包含三路直流电压信号和一路交流电压信号。

硬件电路包括2407A的最小系统设计，包括电源电路、片外存储程序、时钟电路等组成元素。设计交流采样电路：抗干扰电路、模数转换、数据锁存和电平变换电路等。同时完成直流采样电路设计。除此之外，设计通信转换电路以实现与其他系统通信。

软件部分完成交直流采样设计、SCI通信设计。

毕业论文关键词：DSP技术 电能质量 电压监测 采样

毕业设计说明书（论文）外文摘要

Title Hardware design of Multi-channel voltage monitoring based on TMS320LF2407A                          

Abstract

With the expansion of electricity, the increase in electrical equipment, electrical equipment, especially electronic equipment for power quality has become increasingly demanding. How to improve power quality, to ensure the stability of power system operation becomes the main power of people working part. Voltage monitoring system is designed in such a context presented.

The paper designs multi-channel voltage monitoring system based on DSP, mainly completes the voltage monitoring circuit hardware design work. Hardware circuit multiple voltage signal sampling, including multiple DC voltage signals and one AC voltage signal.

Hardware design completes the minimum system design, including the power supply circuit, chip storage process, the clock circuit component elements. AC sampling circuit design includes interference circuit, analog-digital conversion, data latches and level conversion circuit. The system also completes DC sampling circuit design. In addition, designs communication conversion circuitry to communicate with other systems.

Software mainly completed DC sampling design and SCI Communication Design.

Keywords: DSP technology  power quality voltage monitoring sampling

目  录

1  绪论 1

1.1  问题的提出 1

1.2  电能质量监测的发展概况 1

1.3  DSP技术 1

1.4  主要内容安排 2

2  系统介绍 3

3.1  2407最小系统 4

3.1.1  电源电路 4

3.1.2  片外程序存储器 5

3.1.3  复位电路 6

3.1.4  时钟电路 7

3.1.5  JTAG电路 8

3.2  交流采样 9

3.2.1  抗干扰电路的设计 10

3.2.2  AD转换 12

3.2.3 数据信号的锁存 13

3.2.4  电平变换 14

3.3.1  抗干扰电路的设计 15

3.3.2直流采样 17

3.4  通道选择