US 12,366,501 B2
Leak detection method and system
Jean-Luc Regef, Les Clayes-sous-Bois (FR); Patrick Serra, Les Clayes-sous-Bois (FR); Christophe Lemartinel, Les Clayes-sous-Bois (FR); and Brian Donald Bright, London (CA)
Assigned to ATEQ, Les Clayes-sous-Bois (FR)
Appl. No. 18/013,488
Filed by ATEQ, Les Clayes-sous-Bois (FR)
PCT Filed Jun. 29, 2021, PCT No. PCT/EP2021/067770
§ 371(c)(1), (2) Date Dec. 28, 2022,
PCT Pub. No. WO2022/002890, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 2006778 (FR), filed on Jun. 29, 2020; and application No. 2008152 (FR), filed on Jul. 31, 2020.
Prior Publication US 2023/0280233 A1, Sep. 7, 2023
Int. Cl. G01M 3/32 (2006.01); H01M 10/42 (2006.01)
CPC G01M 3/3263 (2013.01) [G01M 3/3272 (2013.01); H01M 10/4228 (2013.01); H01M 2220/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A leak detection system for checking the tightness of an object, said system comprising:
a device for pressurising a space;
a first pressure sensor configured to measure pressure variations of the pressurised space;
a second pressure sensor configured to measure pressure variations of atmospheric pressure;
an electronic entity configured to determine a leak F′ depending on the pressure variations ΔP in the pressurised space and the pressure variations ΔPext of said atmospheric pressure, said variations ΔP, ΔPext being measured over a predetermined test time interval ttest, respectively by the first and second pressure sensors,
wherein the electronic entity determines a level of the leak F′ of the tested object based on a corrected pressure variation ΔP′, said corrected pressure variation ΔP′ being calculated as follows:
F′=C1ΔP′=C1(ΔP−kSΔPext)
wherein ks is a normalisation coefficient specific to said first and second pressure sensors, and C1 is a constant depending on the time and space of the tested object,
said normalisation coefficient ks being determined:
based on a curve of the pressure variations ΔP in said space and a curve of the pressure variations ΔPext of said atmospheric pressure, or
prior to said measurement of the pressure variation ΔP in said space and the measurement of the pressure variation ΔPext of said atmospheric pressure, the value of said normalisation coefficient ks being stored in a memory of the electronic entity.