Title
Calibration Of Metal Oxide Semiconductor Gas Sensors By High School Students
Abstract
A wide range of pollutants cannot be perceived with human senses, which is why the use of gas sensors is indispensable for an objective assessment of air quality. Since many pollutants are both odorless and colorless, there is a lack of awareness, in particular among students. The project SUSmobil (funded by DBU - Deutsche Bundesstiftung Umwelt) aims to change this. In three modules on the topic of gas sensors and air quality, the students (a) learn the functionality of a metal oxide semiconductor (MOS) gas sensor, (b) perform a calibration process and (c) carry out environmental measurements with calibrated sensors. Based on these introductory experiments, the students are encouraged to develop their own environmental questions. In this paper, the student experiment for the calibration of a MOS gas sensor for ethanol is discussed. The experiment, designed as an HTML-based learning, addresses both theoretical and practical aspects of a typical sensor calibration process, consisting of data acquisition, feature extraction and model generation. In this example, machine learning is used for generating the evaluation model as existing physical models are not sufficiently exact.
Year
DOI
Venue
2021
10.3991/ijoe.v17i04.19215
INTERNATIONAL JOURNAL OF ONLINE AND BIOMEDICAL ENGINEERING
Keywords
DocType
Volume
Air pollution, Calibration, Electrochemical sensors, Environmental monitoring, Machine learning, Neural networks, Sensor phenomena and applications, Signal analysis, Student experiment
Journal
17
Issue
Citations 
PageRank 
4
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Sebastian Höfner100.34
Andreas Schütze200.34
Michael Hirth300.34
Jochen Kuhn4228.28
Benjamin Brück500.34