摘要
介绍了自动中药煎药机的工作原理、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 w or king principle,software and hardware composition,and the functions of the automa tic CMM(Chinese Materia Medica)boiling machine are introduced in this paper.Diff erent from other congener products' temperature control principle,time-sharing power control is applied to this system.The boiling process is more fit for CMM pharmacology than other products.The efficiency of the boiling machine is almost the same as the traditional one.The interrupt service subprogram is used in t his system to perform dynamic LED display.In order to control the output power, the duty ratio of the square-ware is adjusted to control the bi-directional thyr istor's conducting and closing time.Thus,the use of PWM control can be avoided,w hich is a bit complex in designing the software and hardware.The design process of this system is clear and simple.
出处
《医疗卫生装备》
CAS
2003年第12期17-18,21,共3页
Chinese Medical Equipment Journal
关键词
自动中药煎药机
设计
开发
工作原理
软件
硬件
系统功能
automatic CMM boiling machine
singl e-chip microcomputer
power control
dynamic LED display
