Patent ID: 9322735
Filing Date: 2016-04-26
CPC Classification: F02M,G01M,G01W,G06F

Claim Text:
1. A method comprising: performing a gas leak detection survey by measuring one or more gas concentration values at one or more measurement points using a gas concentration measurement device carried by a moving vehicle along a survey path, determining one or more geospatially-referenced locations of the one or more measurement points using a positioning device carried by the moving vehicle, and measuring one or more wind direction values using a wind direction determination device carried by the moving vehicle, wherein the one or more wind direction values are measured within a time interval during which the one or more gas concentration values are measured, the time interval being less than or equal to 2 minutes; converting, using at least one hardware processor, the one or more measured wind direction values to data representative of wind direction relative to ground; determining, using the at least one hardware processor, a maximum detection distance value for the one or more measurement points according to the data representative of wind direction at the one or more measurement points, wherein the maximum detection distance value is representative of an estimated maximum distance from a potential gas leak source at which a gas leak from the potential gas leak source is detectable by the survey at the one or more measurement points; and determining, using the at least one hardware processor, a boundary of a survey area for the gas leak detection survey according to the maximum detection distance value, wherein the boundary of the survey area is determined such that if the potential gas leak source is located in the survey area and has a rate of leakage meeting a minimum leak rate condition, then an estimated probability of detection of the gas leak at the one or more measurement point satisfies a probability condition.