Highly Sensitive Optical Fiber Photoacoustic Sensor for <i>In Situ</i> Detection of Dissolved Gas in Oil

Ke, Changjian; Guo, Min; Yang, Beilei; Jin, Feng; Wang, Guangzhen; Ma, Fengxiang; Li, Chenyang; Zhang, Bo; Deng, Hong; Gong, Zhenfeng

doi:10.1109/tim.2021.3102746

Cited by 29 publications

(13 citation statements)

References 41 publications

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Section: Detection Principle and Theoretical Analysis Of H2s Pa Sensormentioning

confidence: 99%

“…H 2 S gas is excited to the high-energy state after absorbing the narrow-band laser of 1574.56 nm, and the instability of the gas molecules in the high-energy state leads to the transition to the low-energy state. 32 In the transition process, the absorbed light energy is converted into translational energy, and the periodic sound pressure signal generated in the PAC is detected by a MEMS microphone. 33 The amplitude S PA of the PA signal is related to the sensitivity S m of the MEMS microphone, the power P of the excitation light, the cell constant F, the gas concentration C, and the absorption coefficient α:…”

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confidence: 99%

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Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level

et al. 2023

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We designed and implemented a photoacoustic (PA) sensor for H 2 S detection in SF 6 background gas based on a multi-pass differential photoacoustic cell (MDPC) and a near-infrared distributed feedback (DFB) laser. In the MDPC apparatus, two resonators with identical geometric parameters were vertically and symmetrically embedded. The differential processing algorithm of two phase-reversed signals realized the effective enhancement of the PA signal and suppressed the flow noise in the dynamic sampling process. In addition, the λ/4 buffer chamber in the MDPC was utilized as a muffler to further reduce the flow noise and realize the dynamic detection of H 2 S. The collimated excitation light was reflected 30 times in a multi-pass structure constituted of two gold-plated concave mirrors, and an absorption path length of 4.92 m was achieved. Due to the high gas density of SF 6 , the relationship between the signal-to-noise ratio (SNR) and the gas flow was different between SF 6 and N 2 background gases. The maximum flow rate of the characteristic gas components detected in the SF 6 background is 150 standard cubic centimeters per minute (SCCM), which is lower than 350 SCCM in N 2 . The linearity property was analyzed, and the results show that the sensitivity of the sensor to H 2 S in the SF 6 background was 27.3 μV/ppm. With the structure, parameters, temperature, gas flow, and natural frequency of the MDPC been optimized, a minimum detection limit (MDL) of 11 ppb was reached with an averaging time of 1000 s, which furnished an effective preventive implement for the safe operation of gas insulation equipment.

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Section: Detection Principle and Theoretical Analysis Of H2s Pa Sensormentioning

confidence: 99%

mentioning

confidence: 99%

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level

et al. 2023

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“…Compared with the traditional circular acoustic-sensitive diaphragm, the oscillatory of the cantilever is almost not inhibited by the surface tensile stress [34] . Therefore, the sound pressure sensitivity can be improved while maintaining a compact structure [35] . The MR of the cantilever is beneficial to enhance the acoustic sensing ability of the FSCAS.…”

Section: Theoretical Analysis and Optimal Designmentioning

confidence: 99%

Multi-mechanism collaboration enhanced photoacoustic analyzer for trace H2S detection

et al. 2023

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“…For in situ detection of dissolved gas in oil, a highly sensitive optical fiber photoacoustic sensor was designed and experimentally verified [ 84 ]. The separation membrane allows the dissolved gas to be separated from oil.…”

Section: Ferrule-top Microcantilever Sensormentioning

confidence: 99%

Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer

Yong-zhang

Zheng

Xiao

et al. 2022

Sensors

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Optical fiber Fabry–Perot sensors have long been the focus of researchers in sensing applications because of their unique advantages, including highly effective, simple light path, low cost, compact size, and easy fabrication. Microcantilever-based devices have been extensively explored in chemical and biological fields while the interrogation methods are still a challenge. The optical fiber probe microcantilever sensor is constructed with a microcantilever beam on an optical fiber, which opens the door for highly sensitive, as well as convenient readout. In this review, we summarize a wide variety of optical fiber probe microcantilever sensors based on Fabry–Perot interferometer. The operation principle of the optical fiber probe microcantilever sensor is introduced. The fabrication methods, materials, and sensing applications of an optical fiber probe microcantilever sensor with different structures are discussed in detail. The performances of different kinds of fiber probe microcantilever sensors are compared. We also prospect the possible development direction of optical fiber microcantilever sensors.

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Highly Sensitive Optical Fiber Photoacoustic Sensor for In Situ Detection of Dissolved Gas in Oil

Cited by 29 publications

References 41 publications

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level

Multi-mechanism collaboration enhanced photoacoustic analyzer for trace H2S detection

Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer

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Highly Sensitive Optical Fiber Photoacoustic Sensor for In Situ Detection of Dissolved Gas in Oil

Cited by 29 publications

References 41 publications

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF6Decomposition Component H2S at the ppb Level

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF6Decomposition Component H2S at the ppb Level

Multi-mechanism collaboration enhanced photoacoustic analyzer for trace H2S detection

Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer

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Product

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Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level

Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆Decomposition Component H₂S at the ppb Level