说明：  如今在人们追求低碳生活健康生活的当下，太阳能热水器因为其节能和环保等优点受到广大消费者的喜爱，我国已经慢慢的成为太阳能热水器生产和使用的大国。因为目前普遍使用太阳能热水器，所以我们设计了一种太阳能热水器基于单片机的温度控制系统。基于现有的芯片和单片机的步进电机驱动器上，控制算法采用PID控制，步进电机的设计位置控制，使热水的流量控制阀的步进电机相连的流动，从而实现温度控制，以完成整个系统的设计。使用protus仿真软件和keil编程软件进行设计仿真，控制太阳能热水器水温能在一定摄氏度范围内的某一温度值上报保持恒定。
(In the pursuit of low-carbon healthy living today, solar water heater with its characteristic of energy-saving environmental protection, favored by the vast number of consumers, our country has become the solar water heaterproduction and use of power. For the widely application of solar water heater,this paper describes the design of a solar water heater temperature control system based on mcu. The stepper motor driver chips and microcontroller based, control algorithms using the PID control, the design of step motorposition control, so as to realize the control and flow valve of hot water flow ofstepper motor is connected, so as to realize the temperature control, designing the system structure.Design and simulation using the PROTUS simulation software and keil programming software, satisfy a certain temperature solar water heater water temperature in degrees Celsius range reporting control to maintain a constant.)