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1. (WO2018223107) WAVELENGTH MODULATION SPECTROSCOPY GAS SENSOR CALIBRATION
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Pub. No.: WO/2018/223107 International Application No.: PCT/US2018/035763
Publication Date: 06.12.2018 International Filing Date: 02.06.2018
IPC:
G01N 21/59 (2006.01) ,G01N 15/02 (2006.01) ,G01N 33/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
59
Transmissivity
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
02
Investigating particle size or size distribution
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
Applicants:
NEC LABORATORIES AMERICA, INC. [US/US]; 4 Independence Way Suite 200 Princeton, New Jersey 08540, US
Inventors:
HUANG, Ming-Fang; US
Agent:
KOLODKA, Joseph; US
Priority Data:
15/996,45302.06.2018US
62/514,03602.06.2017US
Title (EN) WAVELENGTH MODULATION SPECTROSCOPY GAS SENSOR CALIBRATION
(FR) ÉTALONNAGE DE CAPTEUR DE GAZ PAR SPECTROSCOPIE PAR MODULATION DE LONGUEUR D'ONDE
Abstract:
(EN) Aspects of the present disclosure describe gas sensor calibration methods and subsequent sensing methods employing same in conjunction with wavelength modulation spectroscopy (WMS). Additional aspects of the present disclosure advantageously employ WMS for highly-sensitive gas concentration measurement across a range of concentrations from ambient to a high concentration environment such as fire/smoke detection. Finally, still further aspects of the present disclosure determine and then employ two calibration factors and during measurement WMS-2f spectra to determine an inflection or turning point and subsequently which one of the two calibration factors to employ at a given concentration.
(FR) Des aspects de la présente invention décrivent des procédés d'étalonnage de capteur de gaz et des procédés de détection résultants utilisant ces derniers conjointement avec une spectroscopie par modulation de longueur d'onde (WMS). Des aspects supplémentaires de la présente invention utilisent avantageusement la WMS afin de mesurer une concentration de gaz hautement sensible sur une plage de concentrations depuis l'air ambiant jusqu'à un environnement à concentration élevée tel qu'une détection d'incendie/de fumée. Enfin, d'autres aspects de la présente invention permettent de déterminer puis d'utiliser deux facteurs d'étalonnage et pendant la mesure de spectres WMS-2f de déterminer un point d'inflexion ou de virage et, par la suite, lequel des deux facteurs d'étalonnage utiliser à une concentration donnée.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)