Method and system for determining whether an event has occurred from dynamic strain measurements

Registre Brevet USPTO
Numéro d'application 16805277
Numéro de brevet 11085758
Statut Délivré - en vigueur
Date de dépôt 2020-02-28
Date de la première publication 2020-06-25
Date de publication 2020-06-25
Date d'octroi 2021-08-10
Propriétaire Hifi Engineering, Inc. (Canada)
Inventeur(s)
  • Jalilian, Seyed Ehsan
  • Hull, John
  • Huang, Daniel
  • Adeyemi, Adekunle

Abrégé

Methods, systems, and techniques for determining whether an event has occurred from dynamic strain measurements involve determining, using a processor, at least one event parameter from a signal representing the dynamic strain measurements, and then having the processor use the at least one event parameter to determine whether the event has occurred. The at least one event parameter is any one or more of a measure of magnitude of the signal, frequency centroid of the signal, filtered baseline of the signal, harmonic power of the signal, and time-integrated spectrum flux of the signal.

Classes IPC  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01M 3/00 - Investigating fluid tightness of structures
  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
  • G01M 3/38 - Investigating fluid tightness of structures by using light
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
  • G01B 21/32 - Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the other groups of this subclass for measuring the deformation in a solid
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means