NDLI: New setup for a real time high resolution UV-LED absorption spectroscopy

Content Provider	IEEE Xplore Digital Library
Author	Ebert, E. Damaschke, N. Krüger, H. Ewald, H. Rabe, M.
Copyright Year	2015
Description	Author affiliation: Inst. of Gen. Electr. Eng., Univ. of Rostock, Rostock, Germany (Ebert, E.; Damaschke, N.; Krüger, H.; Ewald, H.; Rabe, M.)
Abstract	A real time, high resolution LED based, spectroscopic gas concentration measurement system is presented. This kind of measuring techniques was enabled by the advances in the fabrication of ultraviolet LEDs (UV-LEDs). The system presented here has a relatively compact design and small application efforts. Different hardware setups have been evaluated to design a system for real time high resolution LED absorption spectroscopy. Applied are two concave mirrors, two photo detector diodes and a 405nm LED mounted in a small device. A standard low power microcontroller was applied as signal processor. The few, robust, reasonable priced components enables high volume applications for this sensor. Different optical simulations provide optimized system parameters for gas concentration measurements in the low ppm range. NO2 concentrations of 200 ppm have been measured with a resolution of ~1.5% counts (16-Bit-ADC). Therefore the ppb range becomes an available measurement range with higher ADC-Resolutions.
Sponsorship	IEEE
Starting Page	1
Ending Page	2
File Size	903345
Page Count	2
File Format	PDF
e-ISBN	9781479982035
DOI	10.1109/ICSENS.2015.7370223
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-01
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Light emitting diodes Biomedical measurement Optical fibers Optical fiber sensors Absorption Electrical resistance measurement LED spectroscopy Gas sensor
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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