Simultaneous Analysis of Sensor Data for Breath Control in Respiratory Air

• Main Authors: Rolf Seifert, Thorsten Conrad, Jens Peter, Hubert Keller
• Format: Article
• Language: English
• Published: MDPI AG 2018-04-01
• Series: Chemosensors
• Subjects: breath control; sensor system AGaMon; thermo-cyclic operation; simultaneous analysis; calibration and evaluation procedure SimPlus
• Online Access: http://www.mdpi.com/2227-9040/6/2/15

There is a broad field of applications of breath monitoring in human health care, medical applications and alcohol control. In this report, an innovative mobile sensor system for breath control in respiratory air called AGaMon will be introduced. The sensor system is able to recognize a multitude of different gases like ethanol (which is the leading component of alcoholic drinks), H2S (which is the leading component for halitosis), H2 (which is the leading component for dyspepsia and food intolerance), NO (which is the leading component for asthma) or acetone (which is the leading component for diabetes), thus ,covering almost all significant aspects. An innovative calibration and evaluation procedure called SimPlus was developed which is able to evaluate the sensor data simultaneously. That means, SimPlus is able to identify the samples simultaneously; for example, whether the measured sample is ethanol or another substance under consideration. Furthermore, SimPlus is able to determine the concentration of the identified sample. This will be demonstrated in this report for the application of ethanol, H2, acetone and the binary mixture ethanol-H2. It has been shown that SimPlus could identify the investigated gases and volatile organic compounds (VOCs) very well and that the relative analysis errors were smaller than 10% in all considered applications.