公开(公告)号：US10962437B1

公开(公告)日：2021-03-30

申请号：US16020874

申请日：2018-06-27

Applicant: Picarro Inc.

Inventor： Anders Nottrott ,  Sean MacMullin ,  Sze M. Tan ,  Benjamin Cohen-Stead ,  Chris W. Rella

IPC: G01M3/22 ,  G01N21/359 ,  G01N21/3504

Abstract: In some embodiments, data from a vehicle-borne gas leak detection survey are used to generate an aggregate leak indication search area (LISA) indicator for a plurality of leak indications (measurement peaks) characterizing a single leak or localized set of leaks. A clustering algorithm (e.g. Markov, DBScan) may be used to group a set of indications into a cluster characterizing the leak. Leak indications may be pre-filtered for quality control before assignment to a cluster according to a number of parameters including background gas level, inter-peak distance, peak shape, wind speed, wind direction and/or variability, vehicle speed and/or acceleration, and/or a lower detection threshold for leak flow rate.