TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography

Andrea Chighine; Stylianos Alexios Tsekenis; Edward Fisher; Nick Polydorides; David Wilson; Michael Lengden; Walter Johnstone; Hugh McCann

doi:10.1109/ICSENS.2015.7370677

TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography

Andrea Chighine, Stylianos Alexios Tsekenis, Edward Fisher, Nick Polydorides, David Wilson, Michael Lengden, Walter Johnstone, Hugh McCann

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract / Description of output

In this paper, a large scale, multi-channel optical Chemical Species Tomography (CST) system is presented to aid research into aero jet-engine performance. Through high-speed, non-intrusive measurement and spatio-temporal imaging of gas concentration dynamics; fuel efficiency, emissions, combustion diagnostics and novel engine designs, can be tested to achieve greener aviation. A 126-channel tunable diode laser absorption spectroscopy (TDLAS) system is proposed, utilizing wavelength modulation spectroscopy (WMS) for robust noise performance in harsh industrial environments. Narrow CO2 absorption spectra, in the region of 1997.2nm, can be obtained from first (1f) and second (2f) harmonics of WMS signals by an FPGA-based digital lock-in amplifier (DLIA). Comparative single-channel gas-cell experiments, using the DLIA and a commercial rack-mounted system, demonstrate the clear prospect of all-digital, scalable, multi-projection CST of jet-engine exhaust-plumes. Further, the low cost and compact nature of FPGAs indicate the feasibility of reduced image reconstruction distortion, through massively multi-channel diagnostic tomography instrumentation.

Original language	English
Title of host publication	2015 IEEE SENSORS
Publisher	Institute of Electrical and Electronics Engineers
ISBN (Electronic)	978-1-4799-8203-5
DOIs	https://doi.org/10.1109/ICSENS.2015.7370677
Publication status	E-pub ahead of print - 7 Jan 2016
Event	14th IEEE SENSORS - Busan, Korea, Republic of Duration: 1 Nov 2015 → 4 Nov 2015

Conference

Conference	14th IEEE SENSORS
Country/Territory	Korea, Republic of
City	Busan
Period	1/11/15 → 4/11/15

Keywords / Materials (for Non-textual outputs)

Chemical Species Tomography (CST)
Digital demodulation
FPGA
Lock-in amplifier
TDLAS

Access to Document

10.1109/ICSENS.2015.7370677

IEEE IST AndreaConferencePaper_format_FINAL (1)_submittedAccepted author manuscript, 2.49 MBLicence: Creative Commons: Attribution (CC-BY)

Cite this

@inproceedings{cc2fb0619770437a8289cec6ad3e00d2,

title = "TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography",

abstract = "In this paper, a large scale, multi-channel optical Chemical Species Tomography (CST) system is presented to aid research into aero jet-engine performance. Through high-speed, non-intrusive measurement and spatio-temporal imaging of gas concentration dynamics; fuel efficiency, emissions, combustion diagnostics and novel engine designs, can be tested to achieve greener aviation. A 126-channel tunable diode laser absorption spectroscopy (TDLAS) system is proposed, utilizing wavelength modulation spectroscopy (WMS) for robust noise performance in harsh industrial environments. Narrow CO2 absorption spectra, in the region of 1997.2nm, can be obtained from first (1f) and second (2f) harmonics of WMS signals by an FPGA-based digital lock-in amplifier (DLIA). Comparative single-channel gas-cell experiments, using the DLIA and a commercial rack-mounted system, demonstrate the clear prospect of all-digital, scalable, multi-projection CST of jet-engine exhaust-plumes. Further, the low cost and compact nature of FPGAs indicate the feasibility of reduced image reconstruction distortion, through massively multi-channel diagnostic tomography instrumentation.",

keywords = "Chemical Species Tomography (CST), Digital demodulation, FPGA, Lock-in amplifier, TDLAS",

author = "Andrea Chighine and Tsekenis, {Stylianos Alexios} and Edward Fisher and Nick Polydorides and David Wilson and Michael Lengden and Walter Johnstone and Hugh McCann",

year = "2016",

month = jan,

day = "7",

doi = "10.1109/ICSENS.2015.7370677",

language = "English",

booktitle = "2015 IEEE SENSORS",

publisher = "Institute of Electrical and Electronics Engineers",

note = "14th IEEE SENSORS ; Conference date: 01-11-2015 Through 04-11-2015",

}

Chighine, A, Tsekenis, SA, Fisher, E, Polydorides, N, Wilson, D, Lengden, M, Johnstone, W & McCann, H 2016, TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography. in 2015 IEEE SENSORS., 7370677, Institute of Electrical and Electronics Engineers, 14th IEEE SENSORS, Busan, Korea, Republic of, 1/11/15. https://doi.org/10.1109/ICSENS.2015.7370677

TY - GEN

T1 - TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography

AU - Chighine, Andrea

AU - Tsekenis, Stylianos Alexios

AU - Fisher, Edward

AU - Polydorides, Nick

AU - Wilson, David

AU - Lengden, Michael

AU - Johnstone, Walter

AU - McCann, Hugh

PY - 2016/1/7

Y1 - 2016/1/7

N2 - In this paper, a large scale, multi-channel optical Chemical Species Tomography (CST) system is presented to aid research into aero jet-engine performance. Through high-speed, non-intrusive measurement and spatio-temporal imaging of gas concentration dynamics; fuel efficiency, emissions, combustion diagnostics and novel engine designs, can be tested to achieve greener aviation. A 126-channel tunable diode laser absorption spectroscopy (TDLAS) system is proposed, utilizing wavelength modulation spectroscopy (WMS) for robust noise performance in harsh industrial environments. Narrow CO2 absorption spectra, in the region of 1997.2nm, can be obtained from first (1f) and second (2f) harmonics of WMS signals by an FPGA-based digital lock-in amplifier (DLIA). Comparative single-channel gas-cell experiments, using the DLIA and a commercial rack-mounted system, demonstrate the clear prospect of all-digital, scalable, multi-projection CST of jet-engine exhaust-plumes. Further, the low cost and compact nature of FPGAs indicate the feasibility of reduced image reconstruction distortion, through massively multi-channel diagnostic tomography instrumentation.

AB - In this paper, a large scale, multi-channel optical Chemical Species Tomography (CST) system is presented to aid research into aero jet-engine performance. Through high-speed, non-intrusive measurement and spatio-temporal imaging of gas concentration dynamics; fuel efficiency, emissions, combustion diagnostics and novel engine designs, can be tested to achieve greener aviation. A 126-channel tunable diode laser absorption spectroscopy (TDLAS) system is proposed, utilizing wavelength modulation spectroscopy (WMS) for robust noise performance in harsh industrial environments. Narrow CO2 absorption spectra, in the region of 1997.2nm, can be obtained from first (1f) and second (2f) harmonics of WMS signals by an FPGA-based digital lock-in amplifier (DLIA). Comparative single-channel gas-cell experiments, using the DLIA and a commercial rack-mounted system, demonstrate the clear prospect of all-digital, scalable, multi-projection CST of jet-engine exhaust-plumes. Further, the low cost and compact nature of FPGAs indicate the feasibility of reduced image reconstruction distortion, through massively multi-channel diagnostic tomography instrumentation.

KW - Chemical Species Tomography (CST)

KW - Digital demodulation

KW - FPGA

KW - Lock-in amplifier

KW - TDLAS

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U2 - 10.1109/ICSENS.2015.7370677

DO - 10.1109/ICSENS.2015.7370677

M3 - Conference contribution

AN - SCOPUS:84963610098

BT - 2015 IEEE SENSORS

PB - Institute of Electrical and Electronics Engineers

T2 - 14th IEEE SENSORS

Y2 - 1 November 2015 through 4 November 2015

ER -

TDLAS using FPGA-based lock-in detection for multi-channel Chemical Species Tomography

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