Sensors Auto-calibration Method - Using Programmable Interface Circuit Front-end

Abstract

Abstract:In this paper we present a standard auto-calibration method of sensors. The purpose is to correct the accumulated errors at the sensor output. A universal conditioning circuit is used with the sensor, and the transfer function of the measurement chain is periodically corrected according to the progressive correction method. References physical inputs are used to allow the adjustment of the measurement and to calculate the calibration coefficients. Test results obtained using this method present a considerable enhancement of the measurement accuracy and a good handling of cross-sensitivity problem.

Introducing electronic circuits and hydrological models to postsecondary physical geography and environmental science students: systems science, circuit theory, construction, and calibration

“…To maximize societal gain, these applications can address United Nations Sustainable Development Goals (SDGs) to encourage environmental stewardship, human equality, and a basic standard of living while preserving the functionality of planetary systems that sustain life (Crespo et al, 2017;Filho et al, 2019;Kopnina, 2018). Closely associated with the use of real-world applications for teaching hydrology to geography and environmental science students are class activities (Yli-Panula et al, 2019) intended to provide experiential learning opportunities (Healey and Jenkins, 2000;Ives-Dewey, 2009) such as the use of data and computer programs for analysis of spatial phenomena (Bowlick et al, 2017), field trips (Krakowka, 2012;Lai, 1999;Schiappa and Smith, 2019), fieldwork (Elkins and Elkins, 2007;Mol et al, 2019;Ramdas, 2019), case studies (Hofmann and Svobodová, 2017), and guest lectures (Graham et al, 2017;Hovorka and Wolf, 2019). Experiential activities encourage critical thinking related to the environment (Hofreiter et al, 2007), increase an appreciation of landscapes and physical land surface processes (Karvánková et Published by Copernicus Publications on behalf of the European Geosciences Union.…”

“…Despite working with data collected by electronic circuits at field sites, students at the postsecondary level are often not exposed to how these circuits are calibrated or why these circuits work. Calibration is important for circuit operation where an output is corrected for accuracy (Kouider et al, 2003) or related to a physical quantity. A classic example of calibration involves pyranometers to measure solar radiation from the sun: an output voltage is related to a solar radiation flux (Faiman et al, 1992;Kim et al, 2018;Norris, 1973).…”

Introducing Electronic Circuits and Hydrological Models to Postsecondary Physical Geography and Environmental Science Students: Systems Science, Circuit Theory, Construction and Calibration

“…However, despite working with data collected by electronic circuits at field sites, students at the postsecondary level are often not exposed to how these circuits are calibrated or why these circuits work. Calibration is important for circuit operation where an output is corrected for accuracy (Kouider et al, 2003) or related to a physical quantity. A classic example of calibration involves pyranometers to measure solar radiation from the sun: an output voltage is related to a solar radiation flux (Faiman et al, 1992;Kim et al, 2018;Norris, 1973).…”

Embedded system design and implementation of standard auto-calibrated measurement chain

“…Thus test and correction routines are performed in autonomous way [5]. As shown in figure 2, the adjustment of the measurement chain makes possible the offset error correction, the gain drift compensation, and the cut-off frequencies filtering adjustment.…”