步进电热水器.doc

山东理工大学 毕业设计 毕业生姓名 ： 孔青 专业 ： 电气工程及其自动化 学号 ： 0922041049 指导教师 ： 刘 连鑫 所属系（部） ： 电气与电子工程学院  摘 要 随着生活节奏的加快，电热水器省时的特性越来越被所认可。随着用电环境的改善，不少新建楼房都可以安装式电热水器，这催生了式电热水器的快速增长。式电热水器式电热水器逐层沸腾再逐层底部进水加热，完全实现冷热水分离，决无“阴阳水”。控制确保仅一次沸腾，避免重复加热；可逐层进水逐层加热，每次进水约2-4L，因而可连续提供开水，避免了传统开水器整箱水烧开后才可取水的等待时间，只要从开水口能接出水，不论停电与否，永远是开水，即使温度低，也是凉开水。 Abstract With the quickening pace of life on the high quality of life people have become increasingly demanding, time-saving step-type electric water heater, security features more and more people recognized. With the power to improve the environment, many new buildings, office locations stepper type electric water heater can be installed, which gave birth to the step-type electric water heater rapid growth. The design of the stepper type electric water heater control system microcontroller as the core, supplemented by remote control, display circuit, the use of more advanced integration of the current temperature sensor DS18B20, the temperature sensor can be directly converted into a digital signal for the temperature directly SCM, and hardware connection is very simple, convenient and accurate control for the heating part, we use a relay control, microcontroller signals the relay coil to control the coil on the power or not, so off control by contact heating wire is heated. In order to prevent the water tank when the water level is too low occurrence of dry conditions, set the alarm circuit and anti-anti-dry dry heating time off the circuit. Stepper type electric water heater is small, light weight, want to use hot water, boiling layer by layer and then layer the bottom of the water heating, the full realization of hot and cold water separation, must not yin and yang of water. SCM control to ensure that only a boil, to avoid repeated heating; water layer can be heated layer by layer, each water about 2-4L, which provides continuous hot water, to avoid the traditional water boilers FCL only after the water intake of water to boil waiting time, as