Vývoj senzorového uzlu pro multikomponentní detekci plynů

Abstract

Abstract Hric, Branislav, Development of sensor networks for multi-component gas detection. Ostrava 2018. Dissertation thesis. VŠB – Technical University of Ostrava, Faculty of Safety Engineering. Thesis supervisor: doc. Ing. Ivana Bartlová, CSc. Improving current methods and finding new ways to monitor hazardous substances and mixtures is an important area of research. The development and testing of various detection techniques and strategies for the monitoring of hazardous substances is focused on eliminating industrial risks for selected parts of critical infrastructure and supporting safety experiments. In this regard, sensor networks are undoubtedly the current challenge for various scientific teams. Sensor networks represent the application of new technologies and methods for detecting hazardous gaseous substances in order to minimize the threat to human health and life. For this reason, my dissertation is focused on modern research and development of multi-component sensor networks. The main objective of the research is to increase the efficiency and effectiveness of detecting hazardous chemical substances and mixtures in the air using a multi-component network in such way that it is able to continuously and reversibly record changes in the concentration of the monitored substances in its surrounding area and exhibit a specific sensitivity for them. For the construction of this network, we use available conductive semiconductor and optical sensors that use a variety of physical and chemical principles to achieve effective and sufficiently sensitive detection of the selected substance. The core of the thesis will also be the calibration and testing of conductive gas sensors on a designed and assembled gas detection device (measuring station) that will be connected to the mixing station. We will use gas sensors with ability to change the conductivity value of their active layer, depending on the measurement conditions retrieved from the company SGX Sensortech, Ltd. The result of the thesis will be the design of the measuring chain for testing and evaluation of multi-component sensor unit, then the design of the layout of the sensor network in selected operation and the verification of the results obtained by the measurement.