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1. WO2020069317 - DETERMINATION OF SENSOR OPERATIONAL STATUS VIA SENSOR INTERROGATION

Publication Number WO/2020/069317
Publication Date 02.04.2020
International Application No. PCT/US2019/053458
International Filing Date 27.09.2019
IPC
G01N 27/404 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
404Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid
G01N 33/00 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
CPC
G01N 27/404
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
404Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid ; , e.g. Clark-type oxygen sensors
G01N 33/0006
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
0004Gaseous mixtures, e.g. polluted air
0006Calibrating gas analysers
G01N 33/0016
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
0004Gaseous mixtures, e.g. polluted air
0009General constructional details of gas analysers, e.g. portable test equipment
0011Sample conditioning
0016by regulating a physical variable, e.g. pressure, temperature
G01N 33/0031
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
0004Gaseous mixtures, e.g. polluted air
0009General constructional details of gas analysers, e.g. portable test equipment
0027concerning the detector
0031comprising two or more sensors, e.g. a sensor array
G01N 33/0073
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
0004Gaseous mixtures, e.g. polluted air
0009General constructional details of gas analysers, e.g. portable test equipment
0073Control unit therefor
Applicants
  • MSA TECHNOLOGY, LLC [US]/[US]
Inventors
  • BROWN, Michael, Alvin
  • DAVIS, Brian, Keith
Agents
  • BARTONY, Henry, E., Jr.
Priority Data
62/738,19028.09.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETERMINATION OF SENSOR OPERATIONAL STATUS VIA SENSOR INTERROGATION
(FR) DÉTERMINATION D’ÉTAT DE FONCTIONNEMENT DE CAPTEUR PAR INTERROGATION DE CAPTEUR
Abstract
(EN)
A method of operating a gas sensor for a gas analyte including a sensing component includes, in a first mode, interrogating the sensor by periodically applying an electrical signal to the sensing component of the sensor, measuring sensor response to the electrical signal which is indicative of a sensitivity of the sensor each time the electrical signal is applied to the sensing component, determining whether one or more thresholds have been exceeded based upon the sensor response determined each time the electrical signal is applied to the sensing component, and entering a second mode, different from the first mode in analysis of the sensor response to the periodically applied electrical signals, if one or more thresholds are exceeded.
(FR)
La présente invention concerne un procédé de fonctionnement d’un capteur de gaz pour un analyte gazeux comprenant un composant de détection qui comprend, dans un premier mode, l’interrogation du capteur par application périodique d’un signal électrique au composant de détection du capteur, la mesure de la réponse du capteur au signal électrique qui est indicative d’une sensibilité du capteur chaque fois que le signal électrique est appliqué au composant de détection, la détermination du fait qu’un ou plusieurs seuils ont été dépassés ou non sur la base de la réponse du capteur déterminée chaque fois que le signal électrique est appliqué au composant de détection, et l’entrée dans un deuxième mode, différent du premier mode dans l’analyse de la réponse du capteur aux signaux électriques appliqués périodiquement, si un ou plusieurs seuils sont dépassés.
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