基于STM32单片机的多路数据采集系统设计说明

基于STM32单片机的多路数据采集系统设计

The Design Of Multi-channel Data Acquisition System

Based On STM32

中国地质大学（北京）

指导教师

2013.3.31

摘要

本文是基于ARM Cortex-M3的STM32系列嵌入式微控制器的应用实践，介绍了基于STM32单片机的数据采集的硬件设计和软件设计，数据采集系统是模拟域与数字域之间必不可少的纽带，它的存在具有着非常重要的作用。本文介绍的重点是数据采集系统，而该系统硬件部分的重心在于单片机。数据采集与通信控制采用了模块化的设计，数据采集与通信控制采用了单片机STM32来实现，硬件部分是以单片

机为核心，还包括A/D 模数转换模块，显示模块，和串行接口部分。该系统从机负责数据采集并应答主机的命令。输入数据是由现场模拟信号产生器产生，8 路被测电压再通过模数转换器ADC0809进行模数转换，实现对采集到的数据进行模拟量到数字量的转换，并将转换后的数据传输到上位机，由上位机负责数据的接受、处理和显示，并用LCD数码显示器来显示所采集的结果。软件部分应用Keil uVision4 通

过C++编写控制软件，对数据采集系统、模数转换系统、数据显示、数据通信等程序进行了设计。

关键词：数据采集89C52 单片机ADC0809 Keil uVision4

Abstract

This article is an applicati on of STM32 series embedded ARM con troller based

on Cortex-M3 and it describes the hardware desig n and software desig n of the

data on which based on signal-chip microcomputer .The data collection system is the link between the digital domain and analog domain. It has an very

important function. The introductive point of this text is a data to collect

the system.The hardware of the system focuses on sig nal-chip

microcomputer.Data collecti on and com muni cati

on con trol use modular desig n.

The data collected to con trol with corresp ondence to adopt a mach ine 8051

to carry out. The part of hardware ' s core is STM32, is also includes A/D con versi on module, display module, and the serial in terface. Slave machi ne is resp on sible for data acquisiti on and an sweri ng the host machi ne.8 roads were measured the electric voltage to pass the in gen eral use mold-few conversion of ADC0809,the realization carries on the conversion that imitates

to measure the nu meral to measure towards the data that collect .The n send the data to the host machi ne.the host machi ne is resp on sible for data and display, LED digital display is resp on sible display the data. The software

is partly programmedwith C++ of the Keil uVision4. The software can realize the fun cti on of mon itori ng and con trolli ng the whole system. It desig ns much program like data-acquisition treatment,data-display and data-communication ect.

Keyword: data acquisitio n AT89C52 ADC0809 Keil uVisio n4

目录

第一章绪论 (1)

1.1 研究背景及其目的意义 (1)

1.2 国外研究现状 (2)

1.3 该课题研究的主要容容 (3)

第二章数据产生 (4)

2.1 现场模拟信号产生器 (4)

2.2基于LM331的电压频率转换 (4)

2.3基于LM331的频率电压转换 (5)

第三章数据采集 (7)

3.1 数据采集系统 (7)

3.2 方案论证 (8)

3.2.1 A/D 模数转换的选择 (8)

3.2.2 单片机的选择 (8)

3.2.3 显示部分 (8)

3.2.4 八路数据采集器 (9)

第四章硬件部分 (10)

4.1 主机部分 (10)

4.1.1 单片机 (10)

4.1.2 LCD 显示器 (11)

4.2 模数转换器ADC0809 (12)

第五章软件部分 (16)

5.1 简介Keil Uvision4 (16)

5.2 本系统所用程序代码 (16)

参考文献 (19)