自动煎药机的原理与设计

本文介绍了自动煎药机的工作原理、软硬件组成及系统功能。不同于其他同类产品的温度控制原理，本系统采用分时功率控制。煎制过程更加符合中药药理，煎制功效基本与传统的中药煎制方法相同。本系统采用中断服务子程序完成动态LED显示，解决了动态显示软件设计复杂的问题；运用调节输出方波的占空比控制双向可控硅的导通与截止时间，从而控制输出功率，避免了采用软硬件设计都比较复杂的PWM控制。系统设计思路简单清晰。

The Principle and Designing of the Automatic Boiling-machine

The working principle,software and hardware compose,the function of the automatic boiling machine are introduced in this paper.Different from other cong ener products' temperature control principle,time -sharing power control is used in this system.The boiling process is more fit for the Chinese Materia Medica(CMM)pharanacolog y than other products.The efficiency of the boiling -machine is almost the same as the traditional CMM boiling method.The interrupt service subprog ram is used in this system to make dynamic display soft-ware.In order to control the output power,adjusting the duty radio of the square-ware is used to control the bidirectional thyristor's conducting and closing time,and avoids to using the PWM control,which is a bit com-plex in desig ning the software and hardware.The process of desig ning this system is clear and simple.