Development of a Catalytic Combustion Type Gas Sensor with Low Power Consumption

Hadano, Hironori; Miyagi, Atsuko; Okuno, Tatsuyuki; Nagawa, Yoshiharu; Ishiguro, Y.

doi:10.1149/07516.0195ecst

Cited by 6 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…Common gas detection techniques include catalytic combustion gas sensors [10], [13], [12], semiconductor gas sensors [13], [14], electrochemical gas sensors [15], [16], and infrared gas sensors [17]. Here, we briefly introduce the working principle of these sensors.…”

Section: Why Infrared Gas Sensors?mentioning

confidence: 99%

Greenhouse Gas Detection Based on Infrared Nanophotonic Devices

Hao

Jiang

et al. 2023

IEEE Open J. Nanotechnol.

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Most greenhouse gases come from biological activities and industry which will lead to global warming and show an impact on human life. With the need of green transformation of the global economic structure and seeking for higher quality of human life, the detection and management of greenhouse gases, as well as most hazardous gases in the environment, are increasingly demanding. Applications in different fields require sensors that can detect gas volume fractions with magnitudes from 10-9 to 10-4. Greenhouse gas detection plays an important role both in the agriculture and industry field. In this review, we first summarize the mechanism of several common gas detectors used currently. Then, the advantages of nanostructured gas sensors are discussed. Finally, the applications of infrared gas sensors based on nanophotonic devices are described in detail. This review has been an outlook on the future development of infrared gas sensors based on nanophotonic devices.INDEX TERMS Environment and climate, greenhouse gas, nanostructures, photonic device.

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Section: Why Infrared Gas Sensors?mentioning

confidence: 99%

Greenhouse Gas Detection Based on Infrared Nanophotonic Devices

Hao

Jiang

et al. 2023

IEEE Open J. Nanotechnol.

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“…The Pt resistance is screen printed on the porous Al 2 O 3 substrate. The detection mechanism is that once the methane gas is mixed with oxygen in the air, it penetrates the porous film, and a catalytic combustion reaction occurs [22]. The reaction heat heats the Pt resistance [23], causing the resistance value to change, after which it outputs a stable voltage signal that is proportional to the gas concentration [24].…”

Section: Physical Model and Working Mechanismmentioning

confidence: 99%

Numerical Simulation of Catalytic Methane Combustion in Al2O3 Directional Nanotubes Modified by Pt and Pd Catalyst

Shen

Zhou²,

Liu

et al. 2023

Applied Sciences

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“Blind holes” are the main reasons for the reduced performance of microgas sensor carriers. To improve the “blind hole” of catalytic combustion methane sensors and therefore, their thermal stability, this study presents a numerical simulation of the catalytic combustion in an Al2O3− oriented ceramic array involving porous microthermal plates. A three-visualization model of the sensor is established using the FLUENT software, and the simulation results are systematically analyzed based on the dynamics and thermodynamic mechanism of the microgas sensor. The results show that the regularity of the surface reaction presents a circular distribution, with the center line of the channel serving as the axis symmetry. The total reaction velocity in the array hole increases gradually from the inlet to the outlet. The flow velocity at the inlet should be controlled at more than 1 × 10−8 m/s, which is more accurate compared with the concept of “uniform velocity” in previous studies. The optimum pore size at the inlet should be 150 nm, and the inner pore size of the wall should be slightly higher than 300 nm, which is a more careful division compared with previous pore-size studies. The efficient reaction position is from the inlet to the quarter of the hole. The simulation results make up for the deficiencies in the analysis of the process parameters of the methane sensor carrier array hole and the internal reaction change process, as well as provide innovative comments on the sensor structure design. Through digital simulations, the limitations associated with the experiments can be avoided, the theoretical study can be improved, theoretical support can be provided for experiments related to the improvement of thermal stability, the predictability of experiments can be improved, and the feasibility of the research proposal can be verified. These steps are important for the improvement of the “blind hole” problem of catalytic combustion methane sensors.

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“…Catalytic combustion methane sensor uses the resistance of the detection element to reflect the heat that is produced by the oxidation-reduction reaction [2,3]. The thermal conductivity methane sensor makes use of the difference in thermal conductivity between methane and air to obtain the electrical signals [4,5].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of an Effective Light Interference Methane Sensor Based on Three-Dimensional Optical Path Model

Long

Yang

et al. 2018

Journal of Sensors

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As an important environmental monitoring equipment, the existing methane sensors or the traditional interferometer-based methane detectors have some drawbacks, such as low accuracy, large size, and complex calibration operations. Moreover, the optical path model and analysis method for the light interference methane sensor are not practical. In this paper, an effective light interference methane sensor is proposed based on a three-dimensional optical path model with point light source. Based on this model, the interference optical system is studied to illustrate the cause of the interference fringes. Furthermore, the influencing factors of the light intensity distribution are analyzed and an adjustment method for the interference fringes is proposed, which helps to simplify the assembling and calibrating operations. In order to improve the measurement accuracy, a temperature drift compensation method which includes a mapping table, a steady-state compensator, and a dynamic compensator is proposed. The mapping table is established between the output voltages of photoelectric detector, and the methane concentration, the steady-state compensator, and the dynamic compensator are proposed to eliminate the temperature drift. Finally, an experimental device for the light interference methane sensor is constructed to validate the interference fringe adjustment method and the temperature drift compensation method.

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Development of a Catalytic Combustion Type Gas Sensor with Low Power Consumption

Cited by 6 publications

References 1 publication

Greenhouse Gas Detection Based on Infrared Nanophotonic Devices

Greenhouse Gas Detection Based on Infrared Nanophotonic Devices

Numerical Simulation of Catalytic Methane Combustion in Al2O3 Directional Nanotubes Modified by Pt and Pd Catalyst

Analysis and Design of an Effective Light Interference Methane Sensor Based on Three-Dimensional Optical Path Model

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