毕业设计-基于单片机的温湿度监测系统设计.doc

毕 业 设 计 任 务 书 课题名称 基于单片机的温湿度监测系统 指导教师 瞿惠琴 职 称 讲 师 指导教师 于兴河 职 称 工程师 专业名称 班 级 学生姓名 学 号  课题需要完成的任务： 1、基于单片机设计一个温湿度监测系统，要求：1、温度18~28℃，相对湿度40%~70%；2、用户可以设置系统温湿度报警值；3、检测得到的数据可以通过显示模块显示。 2、可行性方案分析及方案论述。 3、系统设计（各功能模块设计和接口电路设计）。 、电路原理图的绘制。 、毕业论文撰写。 电子信息技术系 （部、分院） 2012 年 12 月 10 日 Abstract In recent years, with the computer penetration in the social field, the application of SCM is to keep at the same time, traditional control testing update on Crescent benefits. In real-time detection and automatic control system of single-chip applications, often as a single-chip core component to use only single-chip is not enough knowledge, but also the specific hardware structure and the specific features of application software objects combine to make perfect. In this paper, both hardware and software for automatic control of water temperature on the process, in the control of the main application of the process of AT89C51, ADC0809, LED display, LM324 comparator, but mainly through the digital temperature sensor DS18B20 collecting ambient temperature to single-chip microcomputer as the core control components, and through four real-time digital display of a digital thermometer temperature. Software using assembly language for programming, so that the implementation of Directive speed, to save storage space. In order to facilitate the expansion and changes to the design of modular software structure, so that the logic of the relationship between program design more concise,Hardware software co-operation under the control of it. And systematic process is: First of all, by setting the button, set the thermostat temperature at the time of operation, and digital display of the temperature. Then, in the running temperature of the process of sampling analog into the A / D converter in the simulation - digital converter, and then converted digital control with digital display, the last single-chip micr