Infrared sensing and analysis in industrial measurements

Jorma Lammasniemi, Timo Hyvärinen

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Spectroscopic measurements at infrared and visible wavelengths are widely used as a tool for laboratory analysis. Due to technological improvements, more and more possibilities are opened for making similar methodology feasible for direct on-line process measurements in harsh industrial conditions or small portable equipment. New optoelectronic components together with compact design can even be used to realize integrated sensor-like analyser devices. Array and multiple-wavelength detectors reduce the need for mechanisms for wavelength multiplexing and offer the possibility of simultaneous measurement of several wavelength channels. The use of narrow-band semiconductor sources gives advantages for modulation arrangements. Using array sources, electronic wavelength scanning becomes possible in some applications. The increased real-time signal-processing capability can be used to implement more complex measuring principles and efficiently compensate for disturbing effects. Instead of using only a few wavelengths, a whole spectral band analysis can be employed. As an example, real-time multielement analysis, with complex calibration functions, becomes a feasible industrial methodology. The fields of application for infrared analysers can be found in chemical process industries, food industries, energy production, and environmental protection. Portable and integrated sensor-like analyser components substantially increase application markets.

Original languageEnglish
Pages (from-to)173 - 179
Number of pages7
JournalSensors and Actuators A: Physical
Volume37 -38
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

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Infrared radiation
Wavelength
wavelengths
portable equipment
industries
Portable equipment
methodology
time signals
sensors
Sensors
spectral bands
Environmental protection
multiplexing
Multiplexing
food
Optoelectronic devices
narrowband
signal processing
Industry
Signal processing

Cite this

Lammasniemi, Jorma ; Hyvärinen, Timo. / Infrared sensing and analysis in industrial measurements. In: Sensors and Actuators A: Physical. 1993 ; Vol. 37 -38. pp. 173 - 179.
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Infrared sensing and analysis in industrial measurements. / Lammasniemi, Jorma; Hyvärinen, Timo.

In: Sensors and Actuators A: Physical, Vol. 37 -38, 1993, p. 173 - 179.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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AU - Lammasniemi, Jorma

AU - Hyvärinen, Timo

PY - 1993

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AB - Spectroscopic measurements at infrared and visible wavelengths are widely used as a tool for laboratory analysis. Due to technological improvements, more and more possibilities are opened for making similar methodology feasible for direct on-line process measurements in harsh industrial conditions or small portable equipment. New optoelectronic components together with compact design can even be used to realize integrated sensor-like analyser devices. Array and multiple-wavelength detectors reduce the need for mechanisms for wavelength multiplexing and offer the possibility of simultaneous measurement of several wavelength channels. The use of narrow-band semiconductor sources gives advantages for modulation arrangements. Using array sources, electronic wavelength scanning becomes possible in some applications. The increased real-time signal-processing capability can be used to implement more complex measuring principles and efficiently compensate for disturbing effects. Instead of using only a few wavelengths, a whole spectral band analysis can be employed. As an example, real-time multielement analysis, with complex calibration functions, becomes a feasible industrial methodology. The fields of application for infrared analysers can be found in chemical process industries, food industries, energy production, and environmental protection. Portable and integrated sensor-like analyser components substantially increase application markets.

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