Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Laser photo-acoustic methane sensor (7.7 µm) for use at unmanned aerial vehicles. / Sherstov, I. V.; Kolker, D. B.; Vasiliev, V. A. и др.
в: Infrared Physics and Technology, Том 133, 104865, 09.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Laser photo-acoustic methane sensor (7.7 µm) for use at unmanned aerial vehicles
AU - Sherstov, I. V.
AU - Kolker, D. B.
AU - Vasiliev, V. A.
AU - Pavlyuk, A. V.
AU - Miroshnichenko, M. B.
AU - Boyko, A. A.
AU - Kostyukova, N. Yu
AU - Miroshnichenko, I. B.
N1 - This research was carried out with financial support from the Russian Science Foundation (Project 17-72-30006). Публикация для корректировки.
PY - 2023/9
Y1 - 2023/9
N2 - A compact laser photo-acoustic (PA) methane sensor based on a quantum-cascade laser (∼7.7 μm; 1750 Hz; 25 mW), a resonant differential photo-acoustic detector (PAD), and a sealed-off gas-filled PA Ref-cell has been developed. Normalization of the absorption signals in the PAD is carried out according to the absorption signals in the gas-filled PA Ref-cell, which significantly reduces the measurement errors of the methane concentration in the case of instability of the laser emission wavelength. The minimum measured background signal of the PA sensor (using high purity nitrogen) is nmin ≈ (26.6 ± 8.4) ppb CH4 (at a bandwidth of 20 Hz), the value of normalized noise equivalent absorption (NNEA) = 8.22 × 10–10 cm−1·W/Hz1/2. A comparison of various research groups results with mid-IR PA gas analyzers is carried out. The developed PA methane sensor is adapted for placement on the UAV's board. Device has dimensions of 315 × 165 × 110 mm, weight ∼3.1 kg, power supply from an external source (9…60 VDC), power consumption ∼20 VA.
AB - A compact laser photo-acoustic (PA) methane sensor based on a quantum-cascade laser (∼7.7 μm; 1750 Hz; 25 mW), a resonant differential photo-acoustic detector (PAD), and a sealed-off gas-filled PA Ref-cell has been developed. Normalization of the absorption signals in the PAD is carried out according to the absorption signals in the gas-filled PA Ref-cell, which significantly reduces the measurement errors of the methane concentration in the case of instability of the laser emission wavelength. The minimum measured background signal of the PA sensor (using high purity nitrogen) is nmin ≈ (26.6 ± 8.4) ppb CH4 (at a bandwidth of 20 Hz), the value of normalized noise equivalent absorption (NNEA) = 8.22 × 10–10 cm−1·W/Hz1/2. A comparison of various research groups results with mid-IR PA gas analyzers is carried out. The developed PA methane sensor is adapted for placement on the UAV's board. Device has dimensions of 315 × 165 × 110 mm, weight ∼3.1 kg, power supply from an external source (9…60 VDC), power consumption ∼20 VA.
KW - Methane
KW - Photo-acoustic gas analyzer
KW - Quantum-cascade laser
KW - Resonant differential photo-acoustic detector
KW - UAV
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85168411669&origin=inward&txGid=e4f780fc8bcc495be755b2d424e46470
UR - https://www.mendeley.com/catalogue/a054f0b5-8172-3d39-86e6-b552ced31858/
U2 - 10.1016/j.infrared.2023.104865
DO - 10.1016/j.infrared.2023.104865
M3 - Article
VL - 133
JO - Infrared Physics and Technology
JF - Infrared Physics and Technology
SN - 1350-4495
M1 - 104865
ER -
ID: 59279602