Advances in multisensor information fusion: A Markov–Kalman viscosity fuzzy statistical predictor for analysis of oxygen flow, diffusion, speed, temperature, and time metrics in CPAP. Issue 4 (20th February 2018)

• Record Type: Journal Article
• Authors: Rodger, James A.
• Other Names: Cortez Paulo guestEditor.; Santos Manuel Filipe guestEditor.
• Is Part Of: Expert systems. Volume 35:Issue 4(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-02-20
• Subjects: humidity -- Kalman filter -- multisensor coordinated monitoring -- neural network -- O2 sensors -- smart temperature sensor; Expert systems (Computer science); 006.33
• DOI: 10.1111/exsy.12270
• Languages: English
• ISSNs: 0266-4720

Abstract

Abstract: The efficacies of continuous positive airway pressure (CPAP) are well documented in decreasing the apnoea–hypopnoea index in patients with obstructive sleep apnoea. To guarantee these efficacies, CPAP manufacturers must thoroughly test these devices to ensure the flow of oxygenated air to the patient at various temperatures during a prescribed time frame. The calculation of the percent oxygen in a "bimixture" of gas can be done by measuring the travel time of a sound wave through the gas, and the travel time is proportional to the density of the air. We utilized existing multisensor tubes that were developed to collect and measure oxygen flow, diffusion, speed, temperature, and time metrics. Then these metrics were analysed using a Markov fuzzy, statistical, artificial neural network, nearest‐neighbour predictive approach to determine the interactions between these variables. An improved Kalman filter method was employed to reduce noise, increase viscosity, and obtain correct data from the CPAP system.