毕业论文--锅炉水温水位自动控制系统.docVIP

毕业设计（论文） 课 题 名 称 锅炉水温水位自动控制系统 学 生 姓 名 学 号 系、年级专业 信息工程系、09电子信息工程 指 导 教 师 陈 玮 2013年4 月 18 日 摘要 Abstract In many areas of modern science and technology, automatic control technology plays an increasingly important role, and with production and the development of science and technology, the level of automation is also getting higher and higher. Control device to control the use of a particular object in accordance with the parameters of the automatic operation of the law is scheduled. The design of the automatic control to buy a certain object automatically in accordance with the parameters of the scheduled operation.It uses MCU as data process and control unit, and uses MCU to control temperature sensor and the level of water which transmits data to MCU through single bus. It can send a signal to change the states of alarm, current temperature and the level of water is displayed by LCD12864 The system achieves multi-channel temperature and water level signal acquisition and control. This system is applied in such domains as warehouse detecting temperature and the level of water ；air-conditioner controlling system in building and supervisory productive process etc.AT89S51 to the system as the center. The level of water is collected by the Ultrasonic sensors. and the temperature of air is measured by DS18B20.while keyboard is used to set a highest level and a lowest level. thus achieving control for automation. Keywords: microcontrollers;temperature sensor;ultrasonic;IR remote control 目 录 摘要 I Abstract II 第1章 绪论 1 1.1锅炉的发展现状 1 1.2 热水锅炉温度检测与液位控制的背景及意义 1 1.3 单片机控制锅炉的发展前景 1 第2章 方案论证 3 2.1 题目分析 3 2.2 温度传感器的选择 3 2.3 测距传感器的选择 6 2.4 显示器的选择 7 2.5 控制器的选择 8 2.6 单片机的选择 8 第3章 系统的总体设计 11 3.1 电路的总体工作原理 11 3.2系统的硬件设计 12 3.3 温度传感电路设计 13 3.4红外遥控电路的设计 15 3.5 显示电路的设计 17 3.6超声波测距模块 18 第4章 系统的软件设计 20 4.1 系统的主程序设计 20 4.2 中断程序的设