基于单片机产生参数可调PWM微网雾化器的设计

Design of PWM Micro Net Atomizer with Adjustable Parameters Based on Single Chip Microcomputer

不同雾化程度的药物可用于治疗不同种类的上下呼吸道疾病,而通过单片机与Keil和Proteus软件的联合调控可产生不同占空比的脉冲宽度调制(Pulse Width Modulation,PWM)信号,调节雾化片的振动频率,最终达到控制微网雾化器雾化程度的目的。结果表明,基于单片机参数可调PWM的微网雾化器可以克服自身作用效果单一、超声波雾化器有效雾化颗粒少以及压缩式雾化器噪声大等缺点。

According to the fact that drugs with different atomization degree can be used to treat different kinds of upper and lower respiratory diseases,Pulse Width Modulation(PWM)signals with different duty ratios are generated through the joint control of singlechip microcomputer and Keil and Proteus software,so as to adjust the vibration frequency of the atomizer and finally achieve the goal of controlling the atomization degree of the micro network atomizer.The results show that the micro network atomizer based on PWM with adjustable parameters of single chip microcomputer can overcome the disadvantages of single effect,less effective atomization particles of ultrasonic atomizer and high noise of compression atomizer.