Sensitive and Fast Gas Sensor for Wide Variety of Applications Based on Novel Differential Infrared Photoacoustic Principle

Autor: Tom Kuusela, Sauli Sinisalo, Jyrki Kauppinen, Ismo Kauppinen, Juho Uotila, Arto Branders

Publikováno v: teme. 79:17-22

With the increase in the emission of gases from the industries and vehicles, there is a strongly growing need of a solution to monitor the emissions in order to have a cleaner and a greener atmosphere. Furthermore, a fast and sensitive gas sensor wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3922104afc5f9c4a34771ba1f71c1e79
https://doi.org/10.1524/teme.2012.0173

Interferometers Based on the Rotational Motion

Autor: Jyrki Kauppinen, Jorma Heinonen, Ismo Kauppinen

Publikováno v: Applied Spectroscopy Reviews. 39:99-130

This review‐type article deals with small, stable, compact, inexpensive, and low‐resolution interferometers mainly based on continuous or back and forth rotational motion to create the optical path difference. These interferometers are suitable f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7aa1420e034b3a29fe3674cbeac5f57e
https://doi.org/10.1081/asr-120028869

2.5.5 Microimmersion lens LEDs for portable photoacoustic methane sensors

Autor: Kimmo Keränen, Ismo Kauppinen, Maxim Remennyy, Heini Saloniemi, K. Sergey, B. A. Matveev, Tom Kuusela, Jyrki Ollila

Publikováno v: Proceedings IMCS 2012.

Microimmersion lens mid-infrared light emitting diodes (mid-IR LEDs) operating in the 3.4 m wavelength range, which covers the absorption bands of many important hydrocarbons (CH4, C3H8…), have been studied with respect to their application in cant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe83cfb3fe614761530fcdabc0b1cfd7
https://doi.org/10.5162/imcs2012/2.5.5

Differential photoacoustic gas cell based on LTCC for ppm gas sensing

Autor: Jyrki Ollila, Kari Kautio, Mikko Heikkinen, Kimmo Keränen, Tom Kuusela, Ismo Kauppinen, Mark Edward Mcnie, Pentti Karioja, B. A. Matveev, R. M. Jenkins

Publikováno v: Keränen, K, Kautio, K, Ollila, J, Heikkinen, M, Kauppinen, I, Kuusela, T, Matveev, B, McNie, M E, Jenkins, R M & Karioja, P 2010, Differential photoacoustic gas cell based on LTCC for ppm gas sensing . in Proceedings of the SPIE : Optoelectronic Interconnects and Component Integration IX ., 760714, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 7607, Optoelectronic Interconnects and Component Integration IX, San Francisco, CA, United States, 25/01/10 . https://doi.org/10.1117/12.841363

Silicon MEMS cantilever-based photoacoustic technology allows for the sensing of ultra low gas concentrations with very wide dynamic range. The sensitivity enhancement is achieved with a cantilever microphone system in which the cantilever displaceme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05a740ade7752b16a92124a746d61a1d
https://cris.vtt.fi/en/publications/e1adf656-7ea7-4be5-90e1-e91dc9f4c66d

Frequency warped Burg's method for AR-modeling

Autor: Kari Roth, Vesa Välimäki, Paulo A. A. Esquef, Ismo Kauppinen

Publikováno v: Aalto University

Auto-regressive modeling of measured data is commonly used in numerous signal processing applications. When aiming for high accuracy, Burg's method has been found to give a suitable model. It has been shown that when the signal energy is non-uniforml

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29437418b3f59c4277eabf45c57b94c8
https://doi.org/10.1109/aspaa.2003.1285795