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Sensors 2016, 16(5), 619; doi:10.3390/s16050619

Analysis and Calibration of Sources of Electronic Error in PSD Sensor Response

1
Department of electronics, University of Alcalá, Alcalá de Henares (Madrid) 28801, Spain
2
Informatics Engineering Department, Eastern Macedonia and Thrace Institute of Technology, Kavala 65404, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Gert F. Trommer
Received: 11 January 2016 / Revised: 29 March 2016 / Accepted: 26 April 2016 / Published: 29 April 2016
(This article belongs to the Section Physical Sensors)

Abstract

In order to obtain very precise measurements of the position of agents located at a considerable distance using a sensor system based on position sensitive detectors (PSD), it is necessary to analyze and mitigate the factors that generate substantial errors in the system’s response. These sources of error can be divided into electronic and geometric factors. The former stem from the nature and construction of the PSD as well as the performance, tolerances and electronic response of the system, while the latter are related to the sensor’s optical system. Here, we focus solely on the electrical effects, since the study, analysis and correction of these are a prerequisite for subsequently addressing geometric errors. A simple calibration method is proposed, which considers PSD response, component tolerances, temperature variations, signal frequency used, signal to noise ratio (SNR), suboptimal operational amplifier parameters, and analog to digital converter (ADC) quantitation SNRQ, etc. Following an analysis of these effects and calibration of the sensor, it was possible to correct the errors, thus rendering the effects negligible, as reported in the results section. View Full-Text
Keywords: local positioning system; PSD; infrared sensors; sensor calibration; measurement errors local positioning system; PSD; infrared sensors; sensor calibration; measurement errors
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rodríguez-Navarro, D.; Lázaro-Galilea, J.L.; Bravo-Muñoz, I.; Gardel-Vicente, A.; Tsirigotis, G. Analysis and Calibration of Sources of Electronic Error in PSD Sensor Response. Sensors 2016, 16, 619.

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