毕业设计--MCS-51单片机实时多通道监测系统设计

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1、 I 编编 号：号： 审定成绩：审定成绩： 毕业设计（论文）毕业设计（论文） 设计（论文）题目：设计（论文）题目： MCS-51 单片机实时多通道监测单片机实时多通道监测 系统设计系统设计 II 摘摘 要要 随着工业的发展需要,我国很多地方都迫切需要用到实时多通道监测系统,如对 温湿度.CO2等环境因素的监测,我们在对温湿度CO2等环境的实时监测系统经历了 从无到有、从简单到复杂的发展过程， 其智能化程度也越来越高，然而我国的很 多地方对于温湿度等环境因素的调节是应用很传统的开关门来实现， 这种方法费时 费力，效率又很低，准确度又不高，随机性大，很不科学。因此需要研制一种结构 简单、 价格低廉

2、的测控系统来达到自动调节温湿度等一系列环境参数。 本文设计了一种基于单片机和传感器技术的实时监测系统，在线实时测量，精 度高、稳定性好，系统功能及测量范围能够达到及时准确检测被监测对象对于温湿 度等环境因素的要求。本文分别从硬件和软件两个方面对此检测系统进行了分析。 本系统主要由集成温湿度传感器、12 位双积分模数转换器 ICL7109、主芯片 AT89C51 和键盘显示辅助芯片 8279 组成。 硬件部分介绍了系统总体工作流程、器件选择、芯片功能及工作原理等。软件 部分设计了计数、数据采集、温湿度显示等子程序来完善整个系统的检测功能。该 系统操作简单，安装方便，性能稳定可靠，特别适用于需对温

3、湿度等环境因素需要 及时监测的场所。 【关键词】【关键词】模数转换器 温湿度传感器 AT89C51 键盘显示辅助芯片 8279 III ABSTRACT With the development of the industry needs, our country greenhouse temperature and humidity monitoring system has experienced from scratch, from simple to complex development process, the extent of their intelligence is als

4、o getting higher and higher, however many of our local greenhouse temperature and humidity regulation is applied very traditional switch door to achieve, this method is time-consuming and laborious, efficiency is low, the accuracy is not high, randomness, is not scientific. So the need for a simple

5、structure, low price and control system to achieve automatic control of temperature and humidity. In this paper, based on the design of a single-chip computer and sensor technology in monitoring system of temperature and humidity, on-line real-time measurement, high precision, good stability, system

6、 function and the measuring range can achieve timely and accurate detection of the monitored object for temperature and humidity requirements. In this paper, from two aspects of hardware and software of this measure system of temperature and humidity are analysised. This system is mainly composed of integrated temperature and humidity sensor,12 double integral A / D converter ICL7109, main chip AT89C51and a keyboard display the auxiliary chip8279. The hardware part introduces overall