US 9,810,598 B2
Systems and methods for determining a leak rate through an opening using acoustical sensors
Stanley Neil Hale, Kennesaw, GA (US)
Assigned to SCORE GROUP PLC, Aberdeenshire (GB)
Appl. No. 14/758,226
Filed by SCORE GROUP PLC, Aberdeenshire (GB)
PCT Filed Dec. 23, 2013, PCT No. PCT/US2013/077527
§ 371(c)(1), (2) Date Jun. 27, 2015,
PCT Pub. No. WO2014/105839, PCT Pub. Date Jul. 3, 2014.
Claims priority of provisional application 61/746,419, filed on Dec. 27, 2012.
Prior Publication US 2016/0011072 A1, Jan. 14, 2016
Int. Cl. G01M 3/24 (2006.01); G01F 1/66 (2006.01); G01M 3/26 (2006.01)
CPC G01M 3/24 (2013.01) [G01F 1/662 (2013.01); G01M 3/243 (2013.01); G01M 3/26 (2013.01)] 49 Claims
OG exemplary drawing
 
1. A method of determining the leak rate of a fluid or gas through at least one opening in a structure comprising the steps of:
receiving at least one acoustical signal from at least one acoustical sensor positioned a known distance from a structure, the acoustical signal being associated with a leak through the at least one opening in the structure;
receiving a low frequency component and a high frequency component of the acoustical signal;
calculating a ratio of the low frequency component to the high frequency component; and
identifying a leak rate based on the calculated ratio.