Wireless Electronic Smell System for the Detection of Diseases Through the Exhaled Breath

摘要

This article presents the design and development of a wireless electronic smell system called "SOE-I", withthe purpose of detecting and monitoring diseases (for example: Respiratory) by means of exhaled breath. Forthis purpose, a group of patients with respiratory problems (i.e. COPD) and a group of control patients (i.e.,healthy or smokers) were evaluated with the sensory system. This system was performed through a highspeedwireless module where the main function is to obtain the data from a remote site, and which wascoupled to a sensory system composed of 8 Metal Oxide Gas Sensors (MOS), where the breath sample wasconditioned. Once the data was acquired, the data processing software was developed to carry out thecharacteristic analysis of the disease, where a clear discrimination of the samples of COPD with respect tohealthy samples was obtained, achieving a 92% of variance through Principal Component Analysis (PCA)method and a Linear discriminant analysis (LDA) technique to classify the data set. With this equipment, anearly diagnosis of a non-transmissible or transmissible disease could be made, preventing other people (i.e,medical personnel) from being infected.