本文介绍的是一个以51单片机为控制核心的水温控制系统，此系统通过人机交互设定控制温度，采用增量型PID算法，通过脉宽调制控制电炉加热，最终实现水温的恒定。-This article is one of 51 core microcontroller to control the water temperature control system, this system controls the temperature through the man-machine interaction setting, using incremental PID algorithm, pulse-width modulation control electric heating, and ultimately the water temperature constant.