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photoacoustic gas sensor

Abstract A compact photoacoustic gas sensor based on a quartz tuning fork and fiber-coupled distributed feedback (DFB) diode laser for detection of trace gas at atmospheric pressure has been developed. The sensor consists of a miniaturized innovative photoacoustic sensor unit with integrated electronics. Conceptualization, K.C., Y.C. In particular, efiects of the physical gas parameters on the photoacoustic signal are theoretically and experimentally compared. Guishi Wang received his Ph.D. degree in optics from Anhui Institute of Optics & Fine Mechanics, Chinese Academy Sciences in 2012. Different from traditional PA sensors, the designed low-power sensor had no gas valves and pumps. The sensor measures two measurement ranges simultaneously: The monitoring of the indoor air quality and the detection of possible leakages of the coolant in CO 2 air-conditioning systems. A ppb-level photoacoustic multicomponent gas sensor system for sulfur hexafluoride (SF6) decomposition detection was developed by the use of two near-infrared (NIR) diode lasers and an ultraviolet (UV) solid-state laser. The gas molecule that absorbs the modulated light transitions to a higher energy level. United States Patent 9551829 . Find support for a specific problem on the support section of our website. Electrochemical sensors. Photoacoustic spectroscopy (PAS) has been regarded as a highly sensitive and selective technique to measure trace gases and has been applied in environmental, industrial and biological monitoring. A proof-of-concept of an innovative PAS gas sensor based on a polyvinylidene fluoride (PVDF) film was introduced. He received his Ph.D degree from Anhui Institute of Optics & Fine Mechanics, Chinese Academy Sciences. The … Xiaoming Gao is Professor at Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences. The invention discloses a gas sensor based on photoacoustic spectrometry, comprising a circuit matched and connected with a light source (1) and a quartz tuning fork (13). Wan, J.; Yu, Y.; Wu, Y.; Feng, R.; Yu, N. Hierarchical leak detection and localization method in natural gas pipeline monitoring sensor networks. 30 ml The gas exchange procedure is user configurable by a simple user interface with display and buttons. Ma, Y.; Qiao, S.; He, Y.; Li, Y.; Zhang, Z.; Yu, X.; Tittel, F.K. Modelization of Photoacoustic Trace Gases Sensors B. Parvitte*, C. Risser, R. Vallon and V. Zeninari Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, UFR Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687 Reims Cedex 2 Chen, K.; Zhang, B.; Liu, S.; Yu, Q. Parts-per-billion-level detection of hydrogen sulfide based on near-infrared all-optical photoacoustic spectroscopy. Compact TDLAS based optical sensor for ppb-level ethane detection by use of a 3.34 μm room-temperature CW interband cascade laser. Photoacoustic (PA) spectroscopy (PAS) is an important method for trace gas detection because of its high sensitivity, high selectivity and small gas sampling volume [, , ]. The sensor (1) has a measuring cell (2), a lamp (3), a photodiode (17), a gas permeable membrane (7) and a microphone (6). The system is based on a pressure sensor element with a sensitivity of 10 muV/V/Pa. It’s offered in a package only 10 × 10 × 7 mm, making it appropriate for applications in IoT, consumer electronics, appliances, and the HVAC market. Now he is an associate professor of Anhui Institute of Optics & Fine Mechanics, Chinese Academy Sciences. A cylindrical concave mirror and a cylindrical planar mirror are utilized as the two reflectors of the Herriott cell. Parvitte, B.; Risser, C.; Vallon, R.; Zéninari, V. Quantitative simulation of photoacoustic signals using finite element modelling software. Withdrawn Application number EP10859075.3A Other languages German (de) French (fr) and Q.Y. Search. In this chapter, a new sensor system is described, based on the photoacoustic effect and realized in a ceramic package. A telecommunication fiber amplifier module was used to boost up the excitation optical power from the two NIR lasers. Chen, K.; Deng, H.; Guo, M.; Luo, C.; Liu, S.; Zhang, B.; Yu, Q. Tube-cantilever double resonance enhanced fiber-optic photoacoustic spectrometer. Subscribe to receive issue release notifications and newsletters from MDPI journals, You can make submissions to other journals. The photoacoustic gas sensor of claim 1, wherein the optical cavity of the photoacoustic cell is shaped to increase an optical path length of the electromagnetic radiation internal to the photoacoustic cell. ; visualization, Y.C. The chamber was filled with CH, The response and recovery time of the PA microcavity gas sensor were measured. A portable laser photoacoustic methane sensor based on FPGA. The designed PA gas sensor mainly consisted of a stainless-steel capillary and a MEMS microphone. The photoacoustic effect has been described as early as the 19th century by several scientists [1,2,3,4,5], i.e., quite some time before the invention of the condenser transmitter [6,7] or other devices that would have allowed recording and quantifying of the parameters of a sound wave.However, the potential of converting light into sound was soon recognized and employed to detect gases. The statements, opinions and data contained in the journal, © 1996-2021 MDPI (Basel, Switzerland) unless otherwise stated. Mao, X.; Zheng, P.; Wang, X.; Yuan, S. Breath methane detection based on all-optical photoacoustic spectrometer. Our dedicated information section provides allows you to learn more about MDPI. Bauer, R.; Stewart, G.; Johnstone, W.; Boyd, E.; Lengden, M. 3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases. Highly sensitive photoacoustic gas sensor based on multiple reflections on the cell wall. Yuan Cao is currently a PhD student in Prof. Xiaoming Gao’s group in Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences. ; investigation, K.C., Y.C., Z.G., and Q.Y. ; Dias, K.R. By continuing you agree to the use of cookies. ; supervision, K.C. His research interests include developments of photonic instrumentation for applied spectroscopy, Optical metrology of trace gases for applications in atmospheric photochemistry and environmental science. In recent years, electrochemical gas sensors and semiconductor gas sensors have been widely used for their low cost and small size [, Due to the characteristics of almost background-free absorption, photoacoustic (PA) spectroscopy (PAS) is one of the most sensitive trace gas detection methods [, In this paper, we propose a highly sensitive PA microcavity sensor without gas valves and pumps for leak detection. The proposed optical trace gas sensor offers the advantages of high sensitivity and easy assembling, as well as the possibility of remote detection. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. A novel photoacoustic spectroscopy gas sensor using a low cost polyvinylidene fluoride film. Weijun Zhang is Professor at Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences. The gas exchange can be started manually with a press of a button or the Modern photoacoustic detectors still rely on the same principles as Bell's apparatus; however, to increase the sensitivity, several modifications have been made.. And the performance of this sensor was evaluated. ; validation, K.C., Y.C. Chen, K.; Gong, Z.; Guo, M.; Yu, S.; Qu, C.; Zhou, X.; Yu, Q. Fiber-optic Fabry-Perot interferometer based high sensitive cantilever microphone. Finite element simulation of photoacoustic pressure in a resonant photoacoustic cell using lossy boundary conditions. It enables gases to be detected at extremely low levels due to its inherent stability and reduced cross-sensitivity. The Chillgard LE Photoacoustic Infrared Refrigerant Monitor is specifically designed for reliable detection of some of the most common refrigerants from up to four remote locations—with a minimum detection level of 20 ppm. This work was supported in part by the National Nature Science Foundation of China (61905034), the Natural Science Foundation of Liaoning Province (2019-MS-054), the Fundamental Research Funds for the Central Universities (DUT18RC(4)040) and the Science and Technology Project of State Grid (521205190014). and Q.Y. Greifzu, F.; Kratzsch, C.; Forgber, T.; Lindner, F.; Schwarze, R. Assessment of particle-tracking models for dispersed particle-laden flows implemented in OpenFOAM and ANSYS FLUENT. He received his BSc from Hefei University of Technology in 2016. Zhou, S.; Slaman, M.; Iannuzzi, D. Demonstration of a highly sensitive photoacoustic spectrometer based on a miniaturized all-optical detecting sensor. The amplitude of the PA signal was recorded with a 1-s lock-in integral time, as shown in, For practical application, the influence of water vapor induced vibration-rotation (V-T) relaxation should be considered. Feasibility of the introduced PVDF-PAS for trace gas sensing was demonstrated by measuring H2O vapor with a minimum detection limit of 40 ppmv using a lock-in time constant of 30 ms, this corresponding to a normalized noise equivalent absorption coefficient (NNEA) of 2.4 × 10−7 cm-1W/Hz1/2. Photoacoustic infrared technology is the newest method of gas detection. Duggen, L.; Lopes, N.; Willatzen, M.; Rubahn, H.G. Chen, K.; Gong, Z.; Yu, Q. Fiber-amplifier-enhanced resonant photoacoustic sensor for sub-ppb level acetylene detection. Toggle Navigation. Li, C.; Dong, L.; Zheng, C.; Tittel, F.K. He obtained his State PhD (HDR) in 2001 and became full Professor of University of Sciences & Technologies of Lille in 2003. Sampaolo, A.; Csutak, S.; Patimisco, P.; Giglio, M.; Menduni, G.; Passaro, V.; Spagnolo, V. Methane, ethane and propane detection using a compact quartz enhanced photoacoustic sensor and a single interband cascade laser. The use of PVDF film as transducer offers good flexibility, water resistance, chemical stability, low cost and simple configuration. PAS – Photoacoustic Sensor The PAS sensor is based on the principle of photoacoustic spectroscopy (PAS), one of the most sensitive measuring methods for detecting gases. Optical Cantilever MEMS Microphone Superior performance when applied to photoacoustic gas detection Cantilever sensor High sensitivity is achieved by using a patented cantilever pressure sensor that is over hundred times more sensitive compared to … The miniature and low-cost gas sensor mainly consisted of a micro-electro-mechanical system (MEMS) microphone and a stainless-steel capillary with two small holes opened on the side wall. His research interests are sensing trace gases and aerosols with photoacoustic spectroscopy. Chen, K.; Yu, Z.; Yu, Q.; Guo, M.; Zhao, Z.; Qu, C.; Yang, Y. A photoacoustic sensor includes a sensor system for photoacoustic detection, at least one noise canceling pressure sensor and a control system in operative connection with the noise canceling pressure sensor to actively cancel the effects of noise in the environment on the sensor system. ; methodology, K.C., Y.C. A small hole exists in the front end of the stainless steel bracket to balance the air pressure inside and outside of the FOM. ; Knight, J.C. A photoacoustic cell, equipped with a highly sensitive cantilever pressure sensor, was used as a selective detector for broadband IR-radiation passed through the sample gas. We use cookies to help provide and enhance our service and tailor content and ads. His research interests include laser heterodyne spectroscopy and atmospheric sounding. We use a 1650.96 nm distributed feedback (DFB) laser and the second-harmonic wavelength modulation spectroscopy (2, Gas leak detection plays an important role in the safety monitoring of gas pipelines, chemical plants, coal mines, and residential buildings [, Traditional methods for gas leak detection mainly include electrochemical sensing, semiconductor sensing, and tunable diode laser absorption spectroscopy (TDLAS). Chen, K.; Yu, Q.; Gong, Z.; Guo, M.; Qu, C. Ultra-high sensitive fiber-optic Fabry-Perot cantilever enhanced resonant photoacoustic spectroscopy. In an arrangement where a sensor is placed in a gaseous phase above the sample and the light impinges the sample from above, the photoacoustic signal results from an absorption zone close to the surface. Chen, K.; Yu, Z.; Gong, Z.; Yu, Q. Lock-in white-light-interferometry-based all-optical photoacoustic spectrometer. We use cookies on our website to ensure you get the best experience. As high CO 2 levels compromise human health, productivity and comfort CO 2 sensors play an essential role in the monitoring of indoor air quality. Liu, K.; Mei, J.; Zhang, W.; Chen, W.; Gao, X. Multi-resonator photoacoustic spectroscopy. The authors declare no conflict of interest. For photoacoustic trace gas detection, the Fabry–Perot microphone is further embedded in a cylindrical multipass cell and shows an ultimate detection limit of 15 ppb of NO in nitrogen. Peltola, J.; Vainio, M.; Hieta, T.; Uotila, J.; Sinisalo, S.; Metsälä, M.; Halonen, L. High sensitivity trace gas detection by cantilever-enhanced photoacoustic spectroscopy using a mid-infrared continuous-wave optical parametric oscillator. All authors have read and agreed to the published version of the manuscript. To assess the sensitivity of the fiber-tip photoacoustic sensor, we placed it in a gas chamber filled with 100 ppm acetylene (C 2 H 2) diluted in Ar. ; Gordon, I.E. We use the second-harmonic wavelength modulation spectroscopy (2, The structure diagram of the PA microcavity sensor is shown in, In an unsealed cylindrical PA cavity, the generated PA pressure can be expressed as [. Small CO2 environmental sensor that overcomes existing size, cost and performance challenges. A 3D finite element model was constructed by using COMSOL Multiphysics [, The simulation of the gas diffusion process in the PA microcavity was employed by the finite element analysis software of ANSYS Fluent [, The effect of air flow and heat flow caused by the small holes on the PA response can be regarded as a high-pass filter [, The structure of the test system for diffused CH, In consideration of the low cost of near-infrared lasers, the preferred characteristic wavelength for detecting CH, We measured the amplitude-frequency response of the PA microcavity gas sensor with different temperatures of 20 °C, 25 °C, 30 °C, 35 °C, and 40 °C. School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China, Electric Power Research Institute of State Grid Anhui Electric Power Co., Ltd., Hefei 230601, China. Highly sensitive photoacoustic multi-gas analyzer combined with mid-infrared broadband source and near-infrared laser. Wang, Z.; Wang, Q.; Zhang, W.; Wei, H.; Li, Y.; Ren, W. Ultrasensitive photoacoustic detection in a high-finesse cavity with Pound—Drever—Hall locking. A highly sensitive photoacoustic (PA) microcavity gas sensor for leak detection is proposed. 4. and L.M. Homemade circuits are integrated into the sensor for laser diode driving and signal processing. Copyright © 2021 Elsevier B.V. or its licensors or contributors. With even higher precision and reliability, the PAS detects gas volumes minimum measuring in ppm range. Beat frequency quartz-enhanced photoacoustic spectroscopy for fast and calibration-free continuous trace-gas monitoring. ; writing—review and editing, K.C., Y.C., B.Z., L.M., M.G., H.D., S.L., F.M., Z.G. Now he is an associate professor of Anhui Institute of Optics & Fine Mechanics, Chinese Academy Sciences. Please note that many of the page functionalities won't work as expected without javascript enabled. Different from traditional PA sensors, the designed low-power sensor had no gas valves and pumps. photoacoustic sensor photoacoustic sensor Prior art date 2010-10-28 Legal status (The legal status is an assumption and is not a legal conclusion.

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