【摘要】 本文设计并实现了一套适用于小型宠物犬的罐疗控制系统。系统以单片机ATMEGA128为核心,利用其产生的PWM方波作为控制信号,经光电隔离和功率放大后,驱动小型真空泵,控制其转速;同时,利用单片机ATMEGA128内部的定时器控制电磁阀进行气路切换,以达到定时抽气、保持的目的。实验结果表明,PWM方波的占空比在48%-96%之间可调,真空泵的流量在1.2L/min-2.5L/min之间可调,真空罐的负压在-0.001Mpa-0.0075Mpa之间可调。整体设计方案原理简单,实用性强,成本较低,为研制商品化的宠物罐疗仪奠定了基础。更多还原

【Abstract】 In this paper,we design a cupping therapy control system for the small pet dogs. The control system bases microcontroller ATMEGA128 as the core. Besides,we utilize the PWM wave as the control signal,which drives a small vacuum pump after the photoelectric isolation and power amplification. At the same time,we use the internal timer to control the valve for gas switch. The experimental results show that the duty of the PWM wave is between 48%-96%,the flow of the vacuum pump is adjustable between 1.2 L/min-2.5 L/min,and the negative pressure of the vacuum tank is adjustable between-0.001 Mpa and 0.0075 Mpa. The design of the system is simple,practical and low-cost,for the development of commercial cupping therapy instrument lays the foundation.更多还原