Development and measurement of a near-infrared CH4 detection system using 1.654μm wavelength-modulated diode laser and open reflective gas sensing probe

Li, Bin; Zheng, Chuantao; Liu, Huifang; He, Qixin; Ye, Weilin; Yu, Zhang; Pan, Jiaoqing; Wang, Yiding

doi:10.1016/j.snb.2015.11.037

Cited by 76 publications

(26 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second part of the system is a gas cell. Compared to our previous work [24], the effective optical absorption length has increased from 40 cm to 50 cm by utilizing a recently developed gas cell. The gas cell is fiber coupled and has a better gas tightness feature than our previous gas cells.…”

Section: Systemmentioning

confidence: 83%

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Zhang

Chi

2018

Journal of Spectroscopy

Self Cite

View full text Add to dashboard Cite

A wavelength modulation spectroscopy-(WMS-) based gas sensing system was established to measure concentration of carbon monoxide (CO) in the range 0-100%. The CO absorption line at 1563.06 nm was scanned with a tunable distributed feedback (DFB) laser, and two InGaAs photodiodes were applied to perform optic-electric conversion. Without using commercial instruments, essential electrical circuits were self-developed and integrated, including laser temperature controller, laser current driver, signal generator, and digital lock-in amplifier. The gas cell deployed in the system was fiber coupled with a total effective optical path length of 50 cm. The second-order harmonic signal was extracted, and experiments of gas detection were carried out to investigate the performance of the sensor, including detection repeatability, detection accuracy, response time, and limit of detection (LoD). Experiment results show that the sensor is reliable and has acceptable probing performance. The maximum relative detection error is less than 3.8%, suggesting good detection stability. Benefiting from the self-developed sensor, the whole CO detection system has small size, affordable expense, and application potential.

show abstract

Section: Systemmentioning

confidence: 83%

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Zhang

Chi

2018

Journal of Spectroscopy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Based on TDLs with WMS, researchers have successfully studied many high-performance methane detection systems in the near infrared region [71,72,78,79]. Typically, a DFB laser is often used as a light source.…”

Section: Near Infrared Methane Detection Systems Based On Wmsmentioning

confidence: 99%

“…In addition, the measurement range was from 0 to 100%. Then, the absorption length was added from 0.2 m to 0.4 m, and an open gas sensing probe was set in an improved system [79]. In the lab group's previous reports, the two mid-infrared detection sensors had been developed [80,81].…”

Section: Near Infrared Methane Detection Systems Based On Wmsmentioning

confidence: 99%

Recent Developments in Modulation Spectroscopy for Methane Detection Based on Tunable Diode Laser

et al. 2019

View full text Add to dashboard Cite

In this review, methane absorption characteristics mainly in the near-infrared region and typical types of currently available semiconductor lasers are described. Wavelength modulation spectroscopy (WMS), frequency modulation spectroscopy (FMS), and two-tone frequency modulation spectroscopy (TTFMS), as major techniques in modulation spectroscopy, are presented in combination with the application of methane detection.

show abstract

“…Furthermore, the greenhouse environment has its own special working conditions and required detection range for CO 2 . The existing infrared sensing techniques involve photoacoustic spectroscopy (PAS) [13], tunable diode laser absorption spectroscopy (TDLAS) [14][15][16][17], and direct absorption spectroscopy (DAS) [18]. PAS is one of the most famous spectroscopy techniques for trace gas detection because of its high sensitivity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared absorption-spectroscopy-based carbon dioxide sensor network in greenhouse agriculture: development and deployment

et al. 2016

Self Cite

View full text Add to dashboard Cite

A mid-infrared carbon dioxide (CO₂) sensor was experimentally demonstrated for application in a greenhouse farm environment. An optical module was developed using a lamp source, a dual-channel pyre-electrical detector, and a spherical mirror. A multi-pass gas chamber and a dual-channel detection method were adopted to effectively enhance light collection efficiency and suppress environmental influences. The moisture-proof function realized by a breathable waterproof chamber was specially designed for the application of such a sensor in a greenhouse with high humidity. Sensor structure of the optical part and electrical part were described, respectively, and related experiments were carried out to evaluate the sensor performance on CO₂ concentration. The limit of detection of the sensor is 30 ppm with an absorption length of 30 cm. The relative detection error is less than 5% within the measurement range of 30-5000 ppm. The fluctuations for the long-term (10 h) stability measurements on a 500 ppm CO₂ sample and a 2000 ppm CO₂ sample are 1.08% and 3.6%, respectively, indicating a good stability of the sensor. A wireless sensor network-based automatic monitoring system was implemented for greenhouse application using multiple mid-infrared CO₂ sensor nodes. A monitor software based on LabVIEW was realized via a laptop for real-time environmental data display, storage, and website sharing capabilities. A field experiment of the sensor network was carried out in the town of Shelin in Jilin Province, China, which proved that the whole monitoring system possesses stable sensing performance for practical application under the circumstances of a greenhouse.

show abstract

Development and measurement of a near-infrared CH4 detection system using 1.654μm wavelength-modulated diode laser and open reflective gas sensing probe

Cited by 76 publications

References 23 publications

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Recent Developments in Modulation Spectroscopy for Methane Detection Based on Tunable Diode Laser

Mid-infrared absorption-spectroscopy-based carbon dioxide sensor network in greenhouse agriculture: development and deployment

Contact Info

Product

Resources

About