水溫控制系統設計方案

本設計是以C8051F020 單片機為控制核心的水溫控制系統。該系統由溫度傳感器AD590 對溫度進行采集并由單片機內部AD 轉化為數字量，溫度實時控制采用增量型PID 算法，通過脈寬調制控制電爐加熱，最終實現水溫的恒定。該系統具有溫度超調量小、調節時間短、靜態誤差小、測量精確、恒定溫度與設定溫度偏差小等優點，且人機交互界面采用彩色液晶觸摸屏，控制方便、顯示直觀。

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.