A control system of fan speed controller for inhaler system to improve the delivery of inhaler pharmaceutical aerosol (IPA)

Abstract

Inhaler is one of the medical treatments that can be used to manage asthmatic symptom which is available in market. Pressurized Metered Dose Inhaler (PMDI) is suitable used for asthma patient to prevent and relieve the asthma symptoms by delivering the Inhaled Pharmaceutical Aerosols (IPA) to the desired area. It is portable and ready to use instantly. Spacer is used with inhaler device to expanse and mix the IPA with air before it is inhaled. However, the capability of delivering IPA to the desired area remains unsolved which inhaling efficiency is relatively low. According information from doctors had shown that different patient’s with age and gender caused the amount of medication being inhaled with using spacer is different. Airway passage in mouth-throat is depends on abilities to inhale. Idea of Automatic Adjustment System will be use to solve the problem. This system are using Peripheral Interface Controller (PIC) microcontroller to automatic adjust a fan speed. It is depend on capability of patient to inhale where the signal is detected by air flow sensor. The pre-programmed mode was designed based on different age of patient to control percentage of IPA delivery.