Version 1
: Received: 8 July 2024 / Approved: 9 July 2024 / Online: 9 July 2024 (10:49:19 CEST)
How to cite:
Pollastrone, F.; Fiorani, L.; Bisauriya, R.; Menicucci, I.; Ciceroni, C.; Pizzoferrato, R. Development and Test of Low-Cost Multi-channel Multi-frequency Lock-In Amplifier for Health and Environment Sensing. Preprints2024, 2024070739. https://doi.org/10.20944/preprints202407.0739.v1
Pollastrone, F.; Fiorani, L.; Bisauriya, R.; Menicucci, I.; Ciceroni, C.; Pizzoferrato, R. Development and Test of Low-Cost Multi-channel Multi-frequency Lock-In Amplifier for Health and Environment Sensing. Preprints 2024, 2024070739. https://doi.org/10.20944/preprints202407.0739.v1
Pollastrone, F.; Fiorani, L.; Bisauriya, R.; Menicucci, I.; Ciceroni, C.; Pizzoferrato, R. Development and Test of Low-Cost Multi-channel Multi-frequency Lock-In Amplifier for Health and Environment Sensing. Preprints2024, 2024070739. https://doi.org/10.20944/preprints202407.0739.v1
APA Style
Pollastrone, F., Fiorani, L., Bisauriya, R., Menicucci, I., Ciceroni, C., & Pizzoferrato, R. (2024). Development and Test of Low-Cost Multi-channel Multi-frequency Lock-In Amplifier for Health and Environment Sensing. Preprints. https://doi.org/10.20944/preprints202407.0739.v1
Chicago/Turabian Style
Pollastrone, F., Claudio Ciceroni and Roberto Pizzoferrato. 2024 "Development and Test of Low-Cost Multi-channel Multi-frequency Lock-In Amplifier for Health and Environment Sensing" Preprints. https://doi.org/10.20944/preprints202407.0739.v1
Abstract
Laser Photoacoustic Spectrometers (LPAS), which provide photoacoustic spectra for detecting food frauds or adulteration, and fluorescence-based systems for recognition of contamination by heavy metal ions in water are two important families of sensors for health and environmental purposes. Both sensor families require one or more low-frequency Lock-In Amplifiers (LIAs) to extract the signal of interest from background noise. In the cited applications, the required LIA frequency is quite low (up to 1kHz), and this leads to a simplification of the hardware with consequent good results in portability, economy, reduced size, weight and low-cost characteristics. The present system, called ENEA DSP Box Due, is based on a very inexpensive microcontroller proto-board and can replace four commercial LIAs, resulting in significant savings in both cost and space. Furthermore, it incorporates a dual-channel oscilloscope and a sinusoidal function generator. This article outlines the architecture of the ENEA DSP Box Due, its electrical characterization and its applications within a project concerning laser techniques for food and water safety.
Keywords
lock-in amplifier (LIA); digital signal processing; photoluminescence measurements; laser photoacoustic spectroscopy (LPAS); microcontroller
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
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.
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