《基于AT89S52单片机的多路数据采集系统》-毕业论文（设计）.doc

LANZHOU UNIVERSITY OF TECHNOLOGY 毕业设计(论文) 题 目 多路数据采集系统 学生姓名 学 号 专业班级 自动化一班 指导教师 学 院 电信学院 答辩日期 摘要 在工业现场中需要对大量诸如温度、压力、湿度等参数进行监控，所以需本文设计一款多路数据采集系统，对各种参数实时进行监测，以满足工业生产需求。 本次课题设计了一个以AT89S52单片机为核心的数据采集系统，主要完成对于温度、湿度、气压模拟量、风速开关量、风向开关量、雨量开关量的监测，对于超过监测设定值的参数进行声光报警。 硬件部分是以单片机为核心，还包括A/D模数转换模块ADC0809，系统扩展模块8255。监测仪的人机交互通过3X3矩阵小键盘实现，可以实现系统的整机复位和相应的监测量限值设定（上下限）控制，显示部分由LCD构成，完成每个监测值的显示。软件部分采用模块化设计以使程序结构清晰，修改简单，可读性强。整个软件可分为如下的模块，即显示模块、键盘处理模块、数据存储模块、数据采集处理模块和主程序模块等。 关键字：数据采集; AT89S52; ADC0809 Abstract There are many parameters such as temperatures, pressure, humidity and so on in the industrial field. It is important to gather and process all kinds of the parameters of the real-time monitoring. It is necessary to develop a multichannel data acquisition system to meet the needs of application in the industrial field. This topic design a AT89S52 SCM as the core of data acquisition system, mainly for temperature analogue, complete the humidity, air pressure is an analog simulation switch quantity, wind direction, wind speed switch quantity, the amount of rainfall switch monitoring, for more than monitoring the parameters of sound and light alarm set value. Hardware is based on single chip microcomputer as the core, including A/D conversion module ADC0809 module, the system expansion module-8255.Monitor the human-computer interaction through the 3×3 matrix small keyboard realization, can realize the system reset and the corresponding monitoring quantity limits set(upper)control, in part by the LCD display form, complete each monitoring of the values of the display. They software of the modular design to make the program structure is clear, simple modification readable. The software can be divided into the following module of display module, keyboard processing module, the data storage module, data acquisition and processing module and main program module, et