水温控制系统设计方案

水温控制系统设计方案

本设计是以C8051F020 单片机为控制核心的水温控制系统。该系统由温度传感器AD590 对温度进行采集并由单片机内部AD 转化为数字量，温度实时控制采用增量型PID 算法，通过脉宽调制控制电炉加热，最终实现水温的恒定。该系统具有温度超调量小、调节时间短、静态误差小、测量精确、恒定温度与设定温度偏差小等优点，且人机交互界面采用彩色液晶触摸屏，控制方便、显示直观。

Abstract：C8051F020 single chip of this design is the core to control the water temperature
control system. The AD590 temperature sensor system for acquisition by the temperature of the internal AD into a single-chip digital temperature control of the use of real-time incremental PID algorithm, through pulse width modulation control of electric heating, and ultimately to achieve a constant temperature. The system has a small amount of temperature overshoot, short settling time, static error, measurement precision, constant temperature and small temperature deviations, etc.,and the man-machine interface using color LCD touch screen, easy control, showing an intuitive.