A novel compact intrinsic safety full range Methane microprobe sensor using “trans-world” processing method based on near-infrared spectroscopy

Zhang, Lewen; Pang, Tao; Zhang, Zhirong; Sun, Pengshuai; Xia, Hua; Wu, Botao; Guo, Qiang; Sigrist, Markus W.; Shu, Chi‐Min

doi:10.1016/j.snb.2021.129680

Cited by 24 publications

(6 citation statements)

References 31 publications

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“…Compared with the sensor only relying on the WMS technique, our sensor simply increases the computational cost without increasing the system cost and has made great progress. Our sensor also has a cost advantage compared with those sensors that combine multiple techniques. , For the sensor related to DAS technology, although low cost is a major advantage, it is difficult to achieve a very low detection limit.…”

Section: Results and Analysismentioning

confidence: 99%

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Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal

et al. 2022

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We propose to replace the traditional time-frequency domain filtering with feature domain filtering to realize an innovation of filtering algorithm. A feature domain transform filter (FDTF) is composed of the feature domain transform layer based on principal component analysis (PCA) algorithm, the feature domain information extractor based on deep learning and the time domain transform layer. It is established to filter out the noise with the same frequency and phase as the signal and is verified on methane gas. Although FDTF is established based on the simulated data set, the filtering effects of the simulation test set and the experimental data set show that the proposed FDTF outperforms other widely used time-frequency filtering algorithms. The FDTF-assisted methane sensor has good linearity at different concentrations of methane gas. With the FDTF enhancement, the optimized methane sensor performs excellent precision and stability in real-time measurements and achieves the minimum detectable column density of 2.50 ppm• m. This is undoubtedly a successful attempt to move the signal to a new domain for parsing and separation.

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Section: Results and Analysismentioning

confidence: 99%

“…Our sensor also has a cost advantage compared with those sensors that combine multiple techniques. 21,22 For the sensor related to DAS technology, 16 although low cost is a major advantage, it is difficult to achieve a very low detection limit.…”

Section: Comparison and Analysis Of Filteringmentioning

confidence: 99%

Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal

et al. 2022

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“…It should also have a minimum detection limit of 5 ppm of CH 4 of atmospheric pressure. Among existing solutions [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ], optical fiber-based solutions hold great promise for meeting the abovementioned requirements [ 12 , 13 ]. Recently, an optical fiber-based sensor called PAS-WRAP was developed, which uses the photoacoustic (PA) effect for gas trace detection [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Detection of the modulated sound waves generated by these molecules forms the basis of PAS. Sigrist et al have significantly contributed to the field of PAS-based gas detection [ 11 , 12 , 13 , 14 ]. They have introduced the concept of pulsed resonance PAS and demonstrated the detection of NO 2 by using four miniature commercial acoustic microphones [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Potential of Thin Silicon Nitride Membranes in Fiber-Based Photoacoustic Sensing

Konijn

Salumbides

Akca

2023

Sensors

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The detection of methane, a strong greenhouse gas, has increased in importance due to rising emissions, which partly originate from unreported and undetected leaks in oil and gas fields. The gas emitted by these leaks could be detected using an optical fiber-based photoacoustic sensor called PAS-WRAP. Here, we investigate the potential of silicon-based membranes as more sensitive microphones in the PAS-WRAP concept. Toward this goal, we built a setup with which the frequency response of the membranes was interrogated by an optical fiber. Multiple mounting mechanisms were tested by adapting commercial interferometry systems (OP1550, ZonaSens, Optics11 B.V.) to our case. Finally, methane detection was attempted using a silicon nitride membrane as a sensor. Our findings show a quality factor of 2.4 at 46 kHz and 33.6 at 168 kHz for a thin silicon nitride membrane. This membrane had a frequency response with a signal-to-background ratio of 1 ± 0.7 at 44 kHz when tested in a vacuum chamber with 4% methane at 0.94 bar. The signal-to-background ratio was not significant for methane detection; however, we believe that the methods and experimental procedures that we used in this work can provide a useful reference for future research into gas trace detection with optical fiber-based photoacoustic spectroscopy.

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“…[1][2][3][4][5] A vehicle-mounted mobile high-precision C 2 H 6 sensor system has the merits of high-speed, large-scale monitoring, which is of great significance to the application of C 2 H 6 leakage monitoring from natural gas. A noncontact trace gas sensor system based on mid-infrared tunable diode laser absorption spectroscopy (TDLAS) [6][7][8][9][10][11][12][13][14][15][16][17][18] shows advantages in response, sensitivity, and selectivity. A mid-infrared C 2 H 6 absorption spectrometer using a thermoelectric cooler (TEC)-based, distributed feedback (DFB) laser at 3.36 μm and a 57.6 m multipass gas cell (MPGC) was reported based on TDLAS.…”

Section: Introductionmentioning

confidence: 99%

Vehicle‐mounted mobile mid‐infrared high‐precision atmospheric ethane sensor system

Zhang

Yan

et al. 2022

Micro & Optical Tech Letters

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Ethane (C 2 H 6 ) is an important gas in environmental monitoring, especially in urban areas, and the development of vehicle-mounted mobile C 2 H 6 sensors is meaningful for high-efficiency and wide-range detection of C 2 H 6 concentration levels. Based on tunable diode laser absorption spectroscopy, a sensor system for the detection of trace C 2 H 6 concentration in the atmosphere was developed using wavelength modulation spectroscopy. An interband cascade laser with a central wavelength of 3337 nm and a multipass gas cell (MPGC) with an optical path length of 26.4 m was used as core optical components. The pressure in the MPGC was optimized at 200 Torr, and such pressure was stabilized by a selfdeveloped pressure control system. The sensor system was compactly integrated into a standalone instrument with a dimension size of 52 × 33 × 28.8 cm 3 . The detection limit (1σ) was measured to be 3.45 parts per billion at an averaging time of 0.5 s. Forty-eight-hour field experiment and vehicle-mounted mobile measurement of atmospheric C 2 H 6 levels with concentration mapping were carried out on the Jilin University campus to validate the practical application ability of the system.

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A novel compact intrinsic safety full range Methane microprobe sensor using “trans-world” processing method based on near-infrared spectroscopy

Cited by 24 publications

References 31 publications

Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal

Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal

Investigating the Potential of Thin Silicon Nitride Membranes in Fiber-Based Photoacoustic Sensing

Vehicle‐mounted mobile mid‐infrared high‐precision atmospheric ethane sensor system

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