半导体车载冰箱的智能温控系统设计

摘要

文中采用模块化设计方法，以STC单片机为控制核心，运用PID算法进行运算，用数字式传感器DSl8820测量温度，大电流放大器OPA549驱动半导体制冷器TECl—12706控制箱体温度，液晶显示屏TDJMl602实时显示。设计出用于车载冰箱的智能温控系统。该系统也能应用于饮水机，医疗恒温箱等器件中。%Depended on the modular design method, an intelligent temperature control system is designed for car refrigerator which is based on core control-a STC microcontroller, PID algorithm for operation , a digital sensor DS18B20 for measuring temperature ,a large current amplifier OPA549 for driving a semiconductor cooler TEC1-12706 to control temperature, liquid crystal display TDJM1602 for real-time display. The system can also be used in water dispenser, medical devices such as the constant temperature box.