Design and development of the automatic CMM boiling machine
- VernacularTitle:自动中药煎药机的设计与开发
- Author:
Hua JIANG
- Publication Type:Journal Article
- Keywords:
automatic CMM boiling machine;
singl e-chip microcomputer;
power control;
dynamic LED display
- From:
Chinese Medical Equipment Journal
2003;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
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.
