Sensor System Development for Bronchitis Detection from Exhaled Breath

Abstract

Human breath contains oxygen, carbon monoxide, nitric oxide, carbon monoxide and Volatile Organic Compounds (VOCs), monitoring some of them signifies the clinical and health condition. Carbon monoxide is one of the hazardous gases that affects even at low concentrations and a breath biomarker for pathophysiological state. In this paper we focus on low cost sensor system to detect bronchitis by sensing exhaled carbon monoxide (eCO). Compatible chemical sensor is exposed to breathe sample by applying a mouth piece, humidity and temperature of exhaled breath also taken into consideration with sensors. Data processing and analysis is performed with Arduino controller to control the operation. From the readings and output we obtain the normal and abnormal range resulting in identification of bronchitis.