基于单片机的水位水温控制系统
编号淮安信息职业技术学院毕业论文
学生姓名刘孟孟
学号41013302
院系电气工程系
专业电气自动化
班级410133
指导教师李瑞年
顾问教师宋指宏
二〇一五年十月
摘要
可编程控制器与单片机的出现大大提高了现代工业的自动化程度，改善了产品的工作性能。本次设计是对水温水位控制系统的智能化改进，采用单片机对其水温水位参数进行控制，提高了电器的工作稳定性，同时引进了数字传感器对水温进行数据采集，这样也就提高了系统的控制精度，对水位的控制结构简单，易于实现，具有很强的现实应用价值。
本设计温度传感器采用DS18B20，DS18B20是美国Dallas公司生产的一线数字式温度计芯片,现在已完全取代DS1820。它具有结构简单，不需要外接元件,采用一根I/O数据线既可以供电又可以传输数据、并可以设有用户设置温度报警界限等特点。此次设计主控制器采用Philips公司生产的P89V51RD2单片机，P89V51RD2是常用的机型，功能强大，性能稳定。该产品可以广泛应用于各种环境，例如：铁路路基温度无线采集系统、水温实时检测系统、楼宇内温度监视系统等。
虽然是对水温水位控制系统的改进，但是这种智能化的改进方法也可以应用到工业、生活的各个水温和水位控制的环境中去，对于其他相关参数的控制改进也具有一定的借鉴意义。此次的基于单片机的水温水位控制系统是一个改进性的智能化产品，以其自身的控制精度高、稳定性好和成本低的独特优点在今后将会由广泛的实用价值，其基于单片机的改进方法也具用广泛的应用意义。
关键词：单片机DS18B20 水温水位控制
Abstract
The appearance of BP PLC and PLC has greatly increased the modern industrial automation and improved the work performance of the product. The design of the water temperature control system is to improve the intellectualized.
A monolithic integrated circuits is to control the level of parameter and improve the stability of the electrical work, and meantime, it introduced a number of the water temperature sensor for data collection, it also increases the control system to control the level of accuracy with a simple structure, which is easy to achieve and has great practical value.
The design temperature sensors used DS18B20 which is a digital thermometer chip produced by the Dallas company and now completely replaced DS1820. It’s simple and doesn’t need the components. Just use a piece of I/O data line can not only supply the power, but the data transmission. Moreover, it has a user setting, you can use it to set the alarm boundaries. The design of master controller used the Philips company’s P89V51RD2 monolithic integrated circuits, which is the usual type. It has a powerful function and reliable performance. It can be widely used in various circumstances. Such as, railway system, the temperature of real-time testing system, the premises of the surveillance system and so on. Though it is a way to improve the water temperature control system, the intellectualized ways of improvement can also be applied to industrial, water and the level control of the environment. For other related parameters, it also has a certain meaning using. The revivification of the water control system is an intelligent product. To its own control of high precision, stability and low cost of the advantages, in the future there will be a wide range of practical value. What’s more, its based on single ways of improvement have wide application meaning.
Keywords:singlechip; water level’s examination; water temperature’s examination