Near-infrared methane sensor system using off-axis integrated cavity output spectroscopy with novel dual-input dual-output coupling scheme for mode noise suppression

Zheng, Kaiyuan; Zheng, Chuantao; Li, Junhao; Ma, Ningning; Liu, Zidi; Wang, Yiding; Tittel, Frank K.

doi:10.1016/j.snb.2020.127674

Cited by 24 publications

(13 citation statements)

References 31 publications

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“…The photograph of the sensor system is shown in Figure 9A , which mainly includes the electrical module, optical module, and vacuum pump. Under the control of the pressure controller, the air is constantly pumped in through the MPGC inlet port and out through the outlet port to maintain the low-pressure conditions required for detection ( Zheng et al, 2020 ). By covering both CO and N 2 O absorption lines, simultaneous detection of CO and N 2 O from the air was performed for ∼1 h. The real-time detected concentrations of the sensor are shown in Figure 9B .…”

Section: Sensor Performance Experimentsmentioning

confidence: 99%

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Zhang

et al. 2022

Front. Chem.

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In this article, a field deployable sensor was developed using a self-developed 4.58-µm continuous wave quantum cascade laser (CW-QCL) for the simultaneous detection of carbon monoxide (CO) and nitrous oxide (N2O), both of which have strong fundamental absorption bands in this waveband. The sensor is based on tunable diode laser absorption spectroscopy (TDLAS) technology, which combined a multi-pass gas cell (MPGC) with a 41 m optical path length to achieve high-precision detection. Meanwhile, the particle swarm optimization-kernel extreme learning machine (PSO-KELM) algorithm was applied for CO and N2O concentration prediction. In addition, the self-designed board-level QCL driver circuit and harmonic signal demodulation circuit reduce the sensor cost and size. A series of validation experiments were conducted to verify the sensor performance, and experiments showed that the concentration prediction results of the PSO-KELM algorithm are better than those of the commonly used back propagation (BP) neural networks and partial least regression (PLS), with the smallest root mean square error (RMSE) and linear correlation coefficient closest to 1, which improves the detection precision of the sensor. The limit of detection (LoD) was assessed to be 0.25 parts per billion (ppb) for CO and 0.27 ppb for N2O at the averaging time of 24 and 38 s. Field deployment of the sensor was reported for simultaneous detection of CO and N2O in the air.

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Section: Sensor Performance Experimentsmentioning

confidence: 99%

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Zhang

et al. 2022

Front. Chem.

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“…Infrared absorption spectroscopy has been maturely applied to the analysis and characterization of gas and liquid analytes. − However, a sensor system consisting of discrete components and modules usually has a large size and heavy weight, which is not preferred for portable sensing applications. At the same time, environmental vibrations and high power consumption also limit the application of such sensors.…”

Section: Introductionmentioning

confidence: 99%

Surface-Enhanced Infrared Absorption Spectroscopic Chalcogenide Waveguide Sensor Using a Silver Island Film

Zheng

et al. 2021

ACS Appl. Mater. Interfaces

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A surface-enhanced infrared absorption spectroscopic chalcogenide waveguide sensor based on the silver island film was proposed for the first time to enhance the sensing performance in both liquid and gas phases. The chalcogenide waveguide sensor was fabricated by the lift-off and oblique angle deposition methods. The surface morphology of the silver island film with different thicknesses was characterized. The absorption of ethanol (liquid) at a wavelength of 1654 nm and that of methane (gas) at 3291 nm were measured using the fabricated chalcogenide waveguide sensor. The chalcogenide waveguide sensor integrated with the 1.8 nm-thick silver island film revealed the best sensing performance. With an acceptable increased waveguide loss resulting from the fabrication of the film, the absorbance enhancement factors for ethanol and methane were experimentally obtained to be >1.5 and >2.3, respectively. The 1σ limit of detection of methane for the sensor integrated with the 1.8 nm-thick silver island film was ∼4.11% for an averaging time of 0.2 s. The mathematic relation between the absorbance enhancement factor and the waveguide loss was derived for sensing performance improvement. Also, the proposed rectangular waveguide sensor provides an idea for the design of a sensor-on-a-chip instead of other waveguide sensors with a high requirement of fabrication accuracy, for example, a slot waveguide or a photonic crystal waveguide.

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“…Among these optical methods, OA-ICOS is a highly sensitive infrared spectroscopy technique and has good selectivity, strong robustness, and fast response. 23 The effective optical path can easily reach the kilometer level, dramatically increasing the interaction between infrared light and the sampled gas. Therefore, the mobile, rapid, and accurate detection of NG components (CH 4 and C 2 H 6 ) using the OA-ICOS technique has very important application value for NG pipeline leakage monitoring and industrial safety.…”

mentioning

confidence: 99%

“…Many techniques have been successfully used to detect NG leakages, such as optical methods based on spectroscopic measurements, − electrochemical methods, gas chromatography, and the like. Due to the short response time, convenient sampling, noninvasive measurement, great miniaturization potential, and low power consumption, optical methods are still the preferred method in hazardous applications, including tunable diode laser absorption spectroscopy (TDLAS), , wavelength modulation spectroscopy, multipass laser absorption spectroscopy, , cavity ring-down spectroscopy (CRDS), integral cavity output spectroscopy (ICOS), off-axis integrated cavity output spectroscopy (OA-ICOS), photoacoustic spectroscopy (PAS), quartz-enhanced photoacoustic spectroscopy (QEPAS), etc. Among these optical methods, OA-ICOS is a highly sensitive infrared spectroscopy technique and has good selectivity, strong robustness, and fast response .…”

mentioning

confidence: 99%

“…Due to the short response time, convenient sampling, noninvasive measurement, great miniaturization potential, and low power consumption, optical methods are still the preferred method in hazardous applications, including tunable diode laser absorption spectroscopy (TDLAS), , wavelength modulation spectroscopy, multipass laser absorption spectroscopy, , cavity ring-down spectroscopy (CRDS), integral cavity output spectroscopy (ICOS), off-axis integrated cavity output spectroscopy (OA-ICOS), photoacoustic spectroscopy (PAS), quartz-enhanced photoacoustic spectroscopy (QEPAS), etc. Among these optical methods, OA-ICOS is a highly sensitive infrared spectroscopy technique and has good selectivity, strong robustness, and fast response . The effective optical path can easily reach the kilometer level, dramatically increasing the interaction between infrared light and the sampled gas.…”

mentioning

confidence: 99%

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Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage

Zheng

et al. 2022

ACS Sens.

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A vehicle-deployed parts-per-billion in volume (ppbv)-level off-axis integrated cavity output spectroscopic (OA-ICOS) CH 4 /C 2 H 6 sensor system was experimentally presented for mobile inspection of natural gas leakage in urban areas. For the time-division-multiplexing-based dual-gas sensor system, an antivibration 35-cm-long optical cavity with an effective path length of ∼2510 m was fabricated with a high-stability temperature and pressure control design. An Allan deviation analysis yielded a minimum detection limit of 0.2 ppbv for CH 4 detection and 10 ppbv for C 2 H 6 detection for a 1 s averaging time. A natural gas leakage source location algorithm was proposed using an improved hybrid Nelder−Mead simplex search method and a particle swarm optimization (NM-PSO) algorithm. For field industrial application, the accuracy of the sensor system and leakage source location algorithm was confirmed through a CH 4 /C 2 H 6 cylinder leakage experiment on the campus. Furthermore, through natural gas pipeline network inspection measurements in urban areas, three types of leakage sources, including natural gas, biogas, and possible leakage source were respectively located and confirmed using the global positioning system and wind speed and direction measurement system, verifying the reliability and potential application of the vehicle-deployed inspection system for future natural gas pipeline leakage monitoring.

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Near-infrared methane sensor system using off-axis integrated cavity output spectroscopy with novel dual-input dual-output coupling scheme for mode noise suppression

Cited by 24 publications

References 31 publications

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Surface-Enhanced Infrared Absorption Spectroscopic Chalcogenide Waveguide Sensor Using a Silver Island Film

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage

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Near-infrared methane sensor system using off-axis integrated cavity output spectroscopy with novel dual-input dual-output coupling scheme for mode noise suppression

Cited by 24 publications

References 31 publications

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Performance of a Mid-Infrared Sensor for Simultaneous Trace Detection of Atmospheric CO and N2O Based on PSO-KELM

Surface-Enhanced Infrared Absorption Spectroscopic Chalcogenide Waveguide Sensor Using a Silver Island Film

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH4/C2H6 Sensor System for Mobile Inspection of Natural Gas Leakage

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Product

Resources

About

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage