基于单片机的热水器温度控制系统设计.docVIP

长沙航空职业技术学院（2012届） 毕业生毕业设计（论文） 基于单片机的热水器温度控制系统设计 系 别：专 业： 姓 名：班 级： 学号： 指导老师姓名： 职称： 最终评定成绩： 2012年5月 摘要 温度是一种最基本的环境参数，人们生活与环境温度息息相关；在工业生产中也离不开温度的检测和控制。随着国民经济的发展，人们需要对各种加热器、热处理炉、反应炉和锅炉的温度进行检测和精确控制。因此研究温度的检测和控制具有重要的意义。 本论文单片机为主要控制器件，以DS18B20为温度传感器的。关键词 AT89S52 DS18B20 温度控制 固态继电器 Abstract Temperature is one of the most fundamental environmental parameters,peoples lives and is closely related to the ambient temperature; temperature detection and control in industrial production is also inseparable. With the development of the national economy, people need to detect and precisely control the temperature of the various heaters, heat treatment furnaces, reactors and boilers. Therefore, the temperature detection and control of the study has important significance. This paper describes the water heater temperature control system based on AT89S52 microcontroller as the main control device,DS18B20 as the temperature sensor. The water temperature is the temperature of the system through the the DS18B20 real-time detection of electric heating rods are heated by the microcontroller from the DS18B20 read out the measured temperature values??, and then be judged by a software program, on-off control Solid State Relay (SSR), to control whether the heating rods heating , in order to achieve real-time detection and precise water temperature control purposes. Software programming and peripheral circuits, combined with intelligent temperature sensor DS18B20 were able to set upper and lower temperature alarm button. Common cathode circuit uses four LED digital tube to detect the water temperature value is displayed. The system can facilitate the detection of temperature control and display, with high accuracy, wide range, high sensitivity, small size, low power consumption, applies to our daily life and work, the temperature in the agricultural production in the field of detection and control. Meanwhile, it is also can be used as the te