基于单片机控制的多路电参数

范文编号:DQ111   范文字数:13407,页数:35

摘  要
    现代测量中，多路测量已成为日益重要的测量技术。国内现在已有不少数据测量和采集的系统，但很多系统存在功能单一、采集通道少、采集速率低、操作复杂并且对测试环境要求较高等问题。人们需要一种应用范围广、性价比高的数据采集系统。
    分析了不同类型的单片机的特点及及外围芯片性能的基础上，设计了单片机控制的多路电采集系统，并给出了该系统硬件、软件实现的方法及该系统的性能测试及分析。基于单片机的多通道数据采集系统将采样信号通过处理，通过键盘控制所要选通采集的数据，输入AD转换为数字信号后由单片机采集，然后利用单片机进行数据的存储、后期处理通过四位LED数码管显示采集数据。该数据采集系统数据处理功能强大、显示直观、界面友好、性价比高，可广泛应用于工业控制、仪器、仪表、机电一体化、智能家居等诸多领域。

关键词：数据采集，多通道，单片机，AD转换

Abstract

In modern measurement techniques, multi-channel measurement has become an increasingly important measurement technique . Now there are a lot of data measurements and acquisition systems.However, some of them lock of multifunction,enough collection, high sampling rate and simple operation and need specific  test environment and so  on.People need a wide range of applications, cost-effective data acquisition system. After analyzing the characteristics of different types of microcontroller and external chip performance, the system of multi-channel electrical acquisition system is designed。The design gives the system's hardware, software methods ,the system performance test and analysis. This paper analyzed the characteristics and performance of external chip with different types of microcontroller, designed multi-channel electrical parameters acquisition system based on the microprocessor technology, given the hardware and software method of system. The design of Multi-channel data acquisition system processed the sample signals, through the keyboard to control the collection of data and using AD converting into digital signals, then used single chip to store and process data, displayed collected data via four LED at last. The data acquisition system with a powerful data processing, intuitive display, user-friendly, and cost-effective, can be widely used in industrial control, instruments, meters, mechanical and electrical integration, intelligent home and many other fields.

Key words:  data acquisition, multi-channel, MCU, AD conversion
 

目 录摘 要 I
1  绪论 1
 1.1  引言 1
 1.2  数据采集系统的发展历史及研究现状和发展趋势 1
 1.3  研究内容 5
2  主芯片及软件介绍 3
2.1 单片机芯片AT89C52介绍 3
    2.1.1 概述 3
  2.1.2 主要功能特性 3
2.2 AD0808芯片简介 6
2.3 硬件开发环境Proteus简介 7
  2.3.1 界面简介 8
  2.3.2 操作简介 10
3  多路电参数采集系统硬件设计 11
3.1  总体设计方案 11
3.2  电源电路电路设计 13
3.3  复位及时钟电路设计 13
3.4  AD0808与单片机接口电路设计 14
3.5  74ls74分频器设计 16
3.6  LED显示电路设计 16
4  多路电参数采集系统软件设计 18
4.1  主程序 18
4.2  AD转换程序  19
4.3  数据处理程序  20
5  多路电参数采集系统软硬件调试 23
5.1  测量系统硬件调试 23
 5.1.1  脱机调试 23
 5.1.2  仿真调试 23
5.2  测量系统软件调试 25
   5.3 性能测试与分析 26
6  总结 27
致 谢 28
参考文献 29
附录a 多路电参数采集系统源程序 30

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