Development and Optimization of an Algorithm for Accurate Estimation of Real-Time Hydrogen Concentration Using a ZnO-Based Gas Sensor

Joseph, J and Uma, G and Umapathy, M and Prajapati, CS and Nayak, MM (2023) Development and Optimization of an Algorithm for Accurate Estimation of Real-Time Hydrogen Concentration Using a ZnO-Based Gas Sensor. In: Journal of Analytical Chemistry, 78 (8). pp. 1062-1069.

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Abstract

Abstract: This paper addresses the problem of estimation of hydrogen gas concentration using current output from a sensor chip, integrated with a thin film of ZnO as a sensing layer and inbuilt microheater to obtain desired operating temperature by proposing an appropriate algorithm. The proposed algorithm minimizes the estimation delay while maximizing the estimation accuracy. The proposed algorithm also accounts for the variation in sensor performance with relative humidity. The key features of the proposed algorithm are low computational complexity, low memory requirements, compatibility with any metal-oxides-based hydrogen sensors with independent calibration or turning points, and minimal requirements to the calibration time. As proof of concept, a demonstration of the algorithm efficiency is evaluated by estimating hydrogen concentration using ZnO thin film-based gas sensor device and comparing its performance with available state-of-the-art hydrogen sensor algorithm outputs.

Item Type:	Journal Article
Publication:	Journal of Analytical Chemistry
Publisher:	Pleiades Publishing
Additional Information:	The copyright for this article belongs to the Pleiades Publishing.
Keywords:	algorithm; calibration; hydrogen concentration estimation; metal oxide sensor.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Nov 2023 09:33
Last Modified:	29 Nov 2023 09:33
URI:	https://eprints.iisc.ac.in/id/eprint/82902

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