该设计以单片机AT89C52为核心，结合单线数字温度传感器DS18B20与液晶显示器12864，设计一种数字化、智能化热水器控制系统。该系统由主控芯片模块、DS18B20温度检测模块、LCD显示模块、水位检测模块、键盘控制模块、报警模块和电磁阀控制模块组成。给出了各个模块地结构及其工作原理、系统硬件原理图、程序流程图和部分源程序，并结合理论设计进行实物制作。此系统解除了热水器上水时需人工守候和过量溢水的问题，达到了省时、环保、节水的目的。该系统与传统的机械式控制系统相比较，具有结构简单，抗干扰能力强，使用方便等特点。-The design is based on the AT89C52 single chip computer as the core, combined with the single line digital temperature sensor DS18B20 and the liquid crystal display 12864, a design of digital, intelligent water heater control system. The system consists of a main control chip module, DS18B20 temperature detection module, LCD display module, the water level detection module, keyboard control module, the alarm module and the solenoid valve control module. Given to the structure of each module and its working principle, system hardware principle diagram, the program flow chart and some source code, and theoretical design of physical production. The need for manual waiting and excess water overflow problem of this system is to lift the water heater, the time-saving, environmental protection, and the purpose of saving water. Mechanical control system compared with the traditional, has the advantages of simple structure, strong anti-interference ability, easy to use and so on.