公开(公告)号：US10859212B2

公开(公告)日：2020-12-08

申请号：US16024513

申请日：2018-06-29

Applicant: Hifi Engineering Inc.

Inventor： Seyed Ehsan Jalilian ,  Arne Dankers ,  David Westwick

IPC: F17D5/06 ,  G01M3/24 ,  G01M3/38 ,  E21B47/26 ,  E21B47/107 ,  G01H9/00 ,  G01N29/14

Abstract: Methods, systems, and techniques for determining whether an acoustic event has occurred along a fluid conduit having acoustic sensors positioned therealong. The method uses a processor to, for each of the sensors, determine a predicted acoustic signal using one or more past acoustic signals measured prior to measuring a measured acoustic signal using the sensor; determine a prediction error between the measured acoustic signal and the predicted acoustic signal; from the prediction error, determine a power estimate of an acoustic source located along a longitudinal segment of the fluid conduit overlapping the sensor; and determine whether the power estimate of the acoustic source exceeds an event threshold for the sensor. When the power estimate of at least one of the acoustic sources exceeds the event threshold, the processor attributes the acoustic event to one of the sensors for which the power estimate of the acoustic source exceeds the event threshold.

公开(公告)号：US10725174B2

公开(公告)日：2020-07-28

申请号：US15753528

申请日：2016-08-22

Applicant: Hifi Engineering Inc.

Inventor： Seyed Ehsan Jalilian ,  Arne Dankers

IPC: G01S15/00 ,  G01S15/08 ,  G01S7/521 ,  F17D3/01 ,  G01S7/536 ,  E21B47/04 ,  E21B47/09 ,  F17D5/06 ,  G01H9/00 ,  G01S7/54

Abstract: Methods and systems for estimating a distance between an acoustic sensor and an acoustic reflector in a conduit are disclosed. One such method includes using the acoustic sensor to measure a combined acoustic signal that comprises an originating acoustic signal propagating along the conduit and an echo signal. The echo signal is generated by the originating acoustic signal reflecting off the acoustic reflector after propagating past the acoustic sensor. A frequency domain representation of the combined acoustic signal is determined and the echo signal is identified by identifying in the frequency domain representation periodic oscillations having a peak-to-peak difference between 0.75 Hz and 1500 Hz. The distance between the acoustic sensor and the acoustic reflector is determined from the velocity of the echo signal and a time required for the echo signal to propagate between the acoustic sensor and the acoustic reflector.

公开(公告)号：US10704740B2

公开(公告)日：2020-07-07

申请号：US15773965

申请日：2016-11-03

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Seyed Ehsan Jalilian ,  Oleksiy Pletnyov

IPC: F17D5/02 ,  G01M3/28

Abstract: Various embodiments provide a method of simulating a leak in a pipeline. The method includes: receiving a fluid stream from a fluid supply; and outputting the received fluid stream through an outlet such that the received fluid stream hits an outer surface of the pipeline at a location opposite the outlet such that a vibration is caused in the pipeline. Some other embodiments provide a corresponding system for simulating a leak in a pipeline, and a corresponding outlet for coupling a conduit to a pipeline.

公开(公告)号：US20190339145A1

公开(公告)日：2019-11-07

申请号：US16271623

申请日：2019-02-08

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Seyed Ehsan Jalilian

IPC: G01L1/24 ,  E21B47/12 ,  E21B47/00 ,  F17C13/02 ,  G02B6/02 ,  F17D5/00

Abstract: A system and method for detecting dynamic strain of a housing. The system includes an optical fiber linearly affixed along a surface of a length of the housing and an interrogator comprising a laser source and a photodetector. The optical fiber comprises at least one pair of fiber Bragg gratings (FBGs) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs. The segment of the optical fiber is linearly affixed along the surface of the housing. The interrogator is configured to perform interferometry by shining laser light along the optical fiber and detecting light reflected by the FBGs. The interrogator outputs dynamic strain measurements based on interferometry performed on the reflected light.

公开(公告)号：US10428644B2

公开(公告)日：2019-10-01

申请号：US15105386

申请日：2014-12-15

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Neil Gulewicz ,  Seyed Ehsan Jalilian

IPC: E21B47/10 ,  E21B41/00 ,  G10K11/00

Abstract: A sound baffle device for use with an acoustic sensor deployed in a housing by a deployment line comprises a radially extending baffle plate and an affixing mechanism for affixing the baffle plate to the deployment line. The baffle plate is configured to reduce acoustic transmission between a first zone of the housing on one side of the baffle plate and a second zone of the housing on an opposite side of the baffle plate.

公开(公告)号：US10422365B2

公开(公告)日：2019-09-24

申请号：US15739336

申请日：2016-06-27

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Seyed Ehsan Jalilian ,  Derek Logan

IPC: F16B2/24 ,  F16B2/06 ,  F17D5/00 ,  G01B9/02 ,  G02B6/46 ,  G01B11/16 ,  G02B6/00 ,  F16L3/06 ,  F17D5/06

Abstract: A clamp for clamping optical fiber to a tube. The clamp has a body portion coupled at one end to a first arm and at an opposing end to a second arm, and a resilient portion to permit the clamp to elastically deform from a closed state in which the clamp is fastened around the tube to an open state in which the clamp is radially moveable off the tube. At least one of the body portion, the first arm and the second arm has a clamping surface to clamp a portion of the optical fiber against the tube when the clamp is fastened around the tube, and a clamping mechanism operable to extend at least part of the clamping surface towards the tube when the clamp is secured to the tube to increase a clamping force applied by the clamping surface.

公开(公告)号：US20190072379A1

公开(公告)日：2019-03-07

申请号：US16081850

申请日：2016-03-01

Applicant: Hifi Engineering Inc.

Inventor： Seyed Ehsan Jalilian ,  John Hull ,  Daniel Huang ,  Adekunle Adeyemi

IPC: G01B11/16 ,  G01B21/32 ,  G01L1/24 ,  G01D5/353 ,  G01K11/32 ,  G01M3/00 ,  G01M3/24 ,  G01M3/38 ,  G01H9/00

Abstract: 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.

公开(公告)号：US20190003499A1

公开(公告)日：2019-01-03

申请号：US16063659

申请日：2016-12-16

Applicant: Hifi Engineering Inc.

Inventor： Derek Logan ,  John Hull ,  Seyed Ehsan Jalilian

IPC: F16B2/06 ,  F17D3/01 ,  G01B11/16 ,  G01H9/00 ,  G01L1/24 ,  G01M11/08 ,  G01M3/38 ,  G01M5/00 ,  G01N29/24

Abstract: A method for non-intrusive pipeline testing involves constructing the pipeline at a construction location that is above ground, affixing an optical fiber along a surface of a length of the pipeline that is at the construction location, measuring dynamic strain experienced by the length of the pipeline by performing optical interferometry using the optical fiber, and moving the length of the pipeline from the construction location to a different installation location. The optical fiber includes at least one pair of fiber Bragg gratings (“FBGs”) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs.

公开(公告)号：US20170153155A1

公开(公告)日：2017-06-01

申请号：US15323937

申请日：2014-07-04

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Seyed Ehsan Jalilian

IPC: G01L1/24 ,  F17D5/00 ,  G02B6/02 ,  E21B47/00

CPC classification number: G01L1/246 ,  E21B47/0006 ,  E21B47/123 ,  F17C13/02 ,  F17D5/00 ,  G02B6/02 ,  G02B6/0208 ,  G02B6/02395

Abstract: A system and method for detecting dynamic strain of a housing. The system includes an optical fiber linearly affixed along a surface of a length of the housing and an interrogator comprising a laser source and a photodetector. The optical fiber comprises at least one pair of fiber Bragg gratings (FBGs) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs. The segment of the optical fiber is linearly affixed along the surface of the housing. The interrogator is configured to perform interferometry by shining laser light along the optical fiber and detecting light reflected by the FBGs. The interrogator outputs dynamic strain measurements based on interferometry performed on the reflected light.

公开(公告)号：US12078518B2

公开(公告)日：2024-09-03

申请号：US16310375

申请日：2017-06-14

Applicant: Hifi Engineering Inc.

Inventor： Seyed Ehsan Jalilian ,  Dongliang Huang ,  Henry Leung ,  King Fai Ma

IPC: G01F1/66 ,  G01M3/28 ,  G06N3/0455 ,  G06N3/08 ,  G06N20/00

CPC classification number: G01F1/666 ,  G01F1/662 ,  G01M3/2807 ,  G06N3/08 ,  G06N20/00 ,  G06N3/0455

Abstract: There is provided a method of estimating flowrate in a pipeline based on acoustic behaviour of the pipe. First acoustic data is measured from the pipeline. A flowrate of the fluid in the pipeline is then estimated. The estimation is based on the first acoustic data and based on a correlation established between second acoustic data and corresponding flowrate data from an experimental pipeline. The correlation is established by a machine learning process (which may include the use of an artificial neural network, such as an autoencoder). The second acoustic data and corresponding flowrate data are used as inputs to the machine learning process.