Comparison of IR LED gas sensors with thermal source products

Desmond Smith; A. Vass; P. Bramley; J. G. Crowder; Changhai Wang

Comparison of IR LED gas sensors with thermal source products

Desmond Smith, A. Vass, P. Bramley, J. G. Crowder, Changhai Wang

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Physical principles for infrared gas sensing using LEDs as sources are examined. A number of LEDs from different sources are compared for power output, polar diagram and temperature dependence of output. Some of these have been incorporated in a practical gas sensor based on the Edinburgh Sensors' Gascard. Thus a direct comparison of signal levels between thermal sources and LEDs has been made using thermal detectors. Gas sensing is demonstrated for CO₂. The paper describes the ranges, accuracies and stability with time and temperature presently exhibited by thermal source sensors and suggests criteria for the widespread use of LED sensors. Some advanced concepts are mentioned with respect to future sensing requirements. © IEE, 1997.

Original language	English
Pages (from-to)	266-270
Number of pages	5
Journal	IEE Proceedings - Optoelectronics
Volume	144
Issue number	5
Publication status	Published - 1997
Event	IEE Proceedings-Optoelectronics - Duration: 1 Jan 1997 → …

Keywords

CO 2 sensor
Gas sensing
LED sensors
Thermal source sensors

Cite this

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title = "Comparison of IR LED gas sensors with thermal source products",

abstract = "Physical principles for infrared gas sensing using LEDs as sources are examined. A number of LEDs from different sources are compared for power output, polar diagram and temperature dependence of output. Some of these have been incorporated in a practical gas sensor based on the Edinburgh Sensors' Gascard. Thus a direct comparison of signal levels between thermal sources and LEDs has been made using thermal detectors. Gas sensing is demonstrated for CO2. The paper describes the ranges, accuracies and stability with time and temperature presently exhibited by thermal source sensors and suggests criteria for the widespread use of LED sensors. Some advanced concepts are mentioned with respect to future sensing requirements. {\textcopyright} IEE, 1997.",

keywords = "CO 2 sensor, Gas sensing, LED sensors, Thermal source sensors",

author = "Desmond Smith and A. Vass and P. Bramley and Crowder, {J. G.} and Changhai Wang",

year = "1997",

language = "English",

volume = "144",

pages = "266--270",

journal = "IEE Proceedings - Optoelectronics",

issn = "1350-2433",

publisher = "Institute of Electrical Engineers",

number = "5",

note = "IEE Proceedings-Optoelectronics ; Conference date: 01-01-1997",

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TY - JOUR

T1 - Comparison of IR LED gas sensors with thermal source products

AU - Smith, Desmond

AU - Vass, A.

AU - Bramley, P.

AU - Crowder, J. G.

AU - Wang, Changhai

PY - 1997

Y1 - 1997

N2 - Physical principles for infrared gas sensing using LEDs as sources are examined. A number of LEDs from different sources are compared for power output, polar diagram and temperature dependence of output. Some of these have been incorporated in a practical gas sensor based on the Edinburgh Sensors' Gascard. Thus a direct comparison of signal levels between thermal sources and LEDs has been made using thermal detectors. Gas sensing is demonstrated for CO2. The paper describes the ranges, accuracies and stability with time and temperature presently exhibited by thermal source sensors and suggests criteria for the widespread use of LED sensors. Some advanced concepts are mentioned with respect to future sensing requirements. © IEE, 1997.

AB - Physical principles for infrared gas sensing using LEDs as sources are examined. A number of LEDs from different sources are compared for power output, polar diagram and temperature dependence of output. Some of these have been incorporated in a practical gas sensor based on the Edinburgh Sensors' Gascard. Thus a direct comparison of signal levels between thermal sources and LEDs has been made using thermal detectors. Gas sensing is demonstrated for CO2. The paper describes the ranges, accuracies and stability with time and temperature presently exhibited by thermal source sensors and suggests criteria for the widespread use of LED sensors. Some advanced concepts are mentioned with respect to future sensing requirements. © IEE, 1997.

KW - CO 2 sensor

KW - Gas sensing

KW - LED sensors

KW - Thermal source sensors

UR - http://www.scopus.com/inward/record.url?scp=0031247791&partnerID=8YFLogxK

M3 - Article

SN - 1350-2433

VL - 144

SP - 266

EP - 270

JO - IEE Proceedings - Optoelectronics

JF - IEE Proceedings - Optoelectronics

IS - 5

T2 - IEE Proceedings-Optoelectronics

Y2 - 1 January 1997

ER -

Comparison of IR LED gas sensors with thermal source products

Abstract

Keywords

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