公开(公告)号：US11859488B2

公开(公告)日：2024-01-02

申请号：US16698335

申请日：2019-11-27

Applicant: BP Exploration Operating Company Limited

Inventor： Pradyumna Thiruvenkatanathan

IPC: E21B47/107 ,  E21B47/14 ,  G01V1/50 ,  G06F30/20 ,  G01V1/28 ,  G01V1/30 ,  G06F30/28 ,  G01V1/00 ,  G01V99/00 ,  G06N7/01

CPC classification number: E21B47/107 ,  E21B47/14 ,  G01V1/001 ,  G01V1/282 ,  G01V1/288 ,  G01V1/307 ,  G01V1/50 ,  G01V99/005 ,  G06F30/20 ,  G06F30/28 ,  G06N7/01 ,  E21B2200/20 ,  E21B2200/22 ,  G01V2210/21 ,  G01V2210/324

Abstract: A method of identifying inflow locations along a wellbore includes obtaining an acoustic signal from a sensor within the wellbore, determining a plurality of frequency domain features from the acoustic signal, and identifying, using a plurality of fluid flow models, a presence of at least one of a gas phase inflow, an aqueous phase inflow, or a hydrocarbon liquid phase inflow at one or more fluid flow locations. The acoustic signal includes acoustic samples across a portion of a depth of the wellbore, and the plurality of frequency domain features are obtained across a plurality of depth intervals within the portion of the depth of the wellbore. Each fluid flow model of the plurality of fluid inflow models uses one or more frequency domain features of the plurality of the frequency domain features, and at least two of the plurality of fluid flow models are different.

公开(公告)号：US11846541B2

公开(公告)日：2023-12-19

申请号：US17427217

申请日：2019-01-31

Applicant: NEC Corporation

Inventor： Takashi Kojima

IPC: G01H9/00 ,  G01V1/00

CPC classification number: G01H9/004 ,  G01V1/001

Abstract: An optical fiber sensing system with improved state detection includes: a cable including optical fibers; a reception unit configured to receive an optical signal from at least one optical fiber included in the cable and acquire a first parameter and a second parameter having a pattern in accordance with a state of a target to be monitored based on the optical signal; and a state detection unit configured to detect a predetermined event based on the pattern that the first parameter has and then detect the state of the target to be monitored based on the pattern that the second parameter has.

公开(公告)号：US20230358907A1

公开(公告)日：2023-11-09

申请号：US18311874

申请日：2023-05-03

Applicant: NEC Laboratories America, Inc.

Inventor： Philip JI ,  Christopher WHITE ,  Ting WANG

IPC: G01V1/22 ,  G01V1/00 ,  G01V1/16

CPC classification number: G01V1/226 ,  G01V1/001 ,  G01V1/168 ,  G01V2210/1425

Abstract: A flexible, rapid deployable perimeter monitoring system and method that employs distributed fiber optic sensing (DFOS) technologies and includes a deployment/operations field vehicle including an interrogator and analyzer/processor. The deployment/operations field vehicle is configured to field deploy a ruggedized fiber optic sensor cable in an arrangement that meets a specific application need, and subsequently interrogate/sense via DFOS any environmental conditions affecting the deployed fiber optic sensor cable. Such sensed conditions include mechanical vibration, acoustic, and temperature that may be advantageously sensed/evaluated/analyzed in the deployment/operations vehicle and subsequently communicated to a central location for further evaluation and/or coordination with other monitoring systems. Upon completion, the field vehicle and DFOS reconfigure a current location or redeployed to another location.

公开(公告)号：US11747496B2

公开(公告)日：2023-09-05

申请号：US16441529

申请日：2019-06-14

Applicant: ULC TECHNOLOGIES, LLC

Inventor： Ryan S. Goldband ,  Baiyang Ren

IPC: G01V1/00 ,  G01N29/24 ,  G01S1/74 ,  G01N29/265 ,  E21B7/04 ,  E21B47/095

CPC classification number: G01V1/001 ,  G01N29/2437 ,  G01N29/2481 ,  G01N29/265 ,  G01S1/74 ,  E21B7/046 ,  E21B47/095 ,  G01N2291/2636

Abstract: An assembly and method for detecting cross bores involving a sewer system and a gas pipe includes an acoustic generator placed within an interior of the sewer system and an acoustic receiver placed either within an interior of the gas pipe or in proximity to an end of the gas pipe. The acoustic generator generates an acoustic signal to transmit through the interior of a sewer pipe of the sewer system. A controller detects, in response to the acoustic receiver hearing the acoustic signal, a cross bore involving the sewer pipe and the gas pipe. A microphone may be placed within the interior of the sewer system at a location remote from the acoustic generator. In this case, the controller determines, in response to the acoustic receiver not hearing the acoustic signal and the microphone hearing the acoustic signal, that a cross bore involving the sewer pipe and the gas pipe is absent.

公开(公告)号：US11688414B1

公开(公告)日：2023-06-27

申请号：US17504579

申请日：2021-10-19

Applicant: Shooter Detection Systems, LLC

Inventor： Richard Thomas Onofrio ,  Ronald A Fowler ,  Frank Ray Bachmann

IPC: G10L25/51 ,  G01V1/00 ,  G01P13/00

CPC classification number: G10L25/51 ,  G01P13/00 ,  G01V1/001

Abstract: Techniques for low power gunshot detection are disclosed. Infrared information is collected using a gunshot sensor device. The infrared information is collected using mid-infrared band sensing to provide motion detection. Additional infrared information is buffered using the gunshot sensor device. The additional infrared information is collected using near-infrared band sensing. The buffering is enabled by the motion detection. Acoustic information is collected using the gunshot sensor device. The collecting acoustic information is enabled by the motion detection. A gunshot is detected using the gunshot sensor device. The detecting is based on the additional infrared information and the acoustic information. The detecting includes monitoring the acoustic information to identify a high-intensity gunshot sound and correlating the high-intensity gunshot sound to the infrared information that was buffered. The gunshot sensor device uses cable-free communication to a network and notifies the network of a possible gunshot occurrence.

公开(公告)号：US10054104B1

公开(公告)日：2018-08-21

申请号：US15219167

申请日：2016-07-25

Applicant: AJC Innovations, LLC

Inventor： Almond J. Cote

IPC: B63B22/00 ,  F03B13/20 ,  G01V1/00 ,  H02K7/18 ,  G05D1/00 ,  B63G8/00 ,  B64D45/00 ,  B63J3/00

CPC classification number: F03B13/20 ,  B63B2209/14 ,  B63G2008/004 ,  B64D45/00 ,  B64D2045/0065 ,  F05B2240/931 ,  F05B2260/4031 ,  F05B2260/42 ,  F05B2260/5032 ,  G01V1/001 ,  G05D1/10 ,  H02K7/14 ,  Y02E10/38

Abstract: The present disclosure provides a small, inexpensive, long-lived underwater beacon locator. The beacon locator can illustratively include a housing, a communications link, a processor, a plurality of hydrophones and a motion generator.

公开(公告)号：US20180180752A1

公开(公告)日：2018-06-28

申请号：US15738626

申请日：2016-06-22

Applicant: WIZEDSP LTD.

Inventor： OZ GABAI

IPC: G01V1/00

CPC classification number: G01V1/001

Abstract: An ultra-low-power acoustic locator circuitry for locating a battery operated device when the battery is dead, or when a mobile communication device is set to silent mode.

公开(公告)号：US20180156757A1

公开(公告)日：2018-06-07

申请号：US15889972

申请日：2018-02-06

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Nicholas David Nagrodsky ,  James Michael Kiss, JR. ,  Jeffrey Fries ,  Derick Diaz ,  David Farmer

IPC: G01N29/24 ,  G01M11/00 ,  G01N29/12 ,  G01N29/44 ,  G01N29/11

CPC classification number: G01N29/2418 ,  G01M11/30 ,  G01N29/11 ,  G01N29/12 ,  G01N29/4463 ,  G01N2291/01 ,  G01N2291/2623 ,  G01V1/001 ,  G01V1/208 ,  G01V1/226

Abstract: A method detects the presence of a vehicle on a railway track using a sensing processor monitoring a sensing system for detecting vibration into ground installed along the railway track. The sensing system includes a detection module for detecting a vehicle on the railway track. The method includes an initialization step which includes the sub-steps of emitting a first signal to be received by the sensing processor through the sensing system, sending a first message to the sensing processor, monitoring the sensing system, and configuring the detection module in function of the received first signal and configuration data received in the first message. The configuration data can include location of the initialization device, intensity/magnitude of the first signal, emission time of the first signal, and/or type of object corresponding to the first signal.

公开(公告)号：US20180132309A1

公开(公告)日：2018-05-10

申请号：US15511802

申请日：2014-10-30

Applicant: BEIJING INSTITUTE OF INFORMATION TECHNOLOGY ,  SHANGHAI INSTITUTE OF MICROSYSTEM AND INFORMATION TECHNOLOGY, CHINESE ACADEMY OF SCIENCES

Inventor： YUHONG CHEN ,  XIAOBING YUAN ,  SHICHENG WANG ,  TINGTING LIANG ,  HUAWEI LIU

IPC: H04W84/20 ,  G06K9/62 ,  G06F3/16 ,  G01V1/00 ,  H04N5/225

CPC classification number: H04W84/20 ,  G01V1/001 ,  G01V1/223 ,  G06F3/16 ,  G06K9/00771 ,  G06K9/6288 ,  H04N5/225 ,  H04W84/18

Abstract: A wireless sensor network architecture based on multifunctional and compound sensors comprises several sensing modules including a plurality of first sensor nodes and a second sensor node. The first sensor nodes are used for collecting a target signal after sensing that a moving target enters a detection area, extracting feature information of the moving target, analyzing the feature information of the moving target to form primary target information, and transmitting the primary target information to the second sensor node, The second sensor node performs moving target matching and association on the primary target information of the moving target that is transmitted by the plurality of first sensor nodes, collects the associated primary target information to form secondary target information. A control module used for synthesizing and calibrating the secondary target information, and obtaining by merging the calibrated secondary target information, the situation evaluation of the moving target to form advanced target information.

公开(公告)号：US09880273B2

公开(公告)日：2018-01-30

申请号：US15022166

申请日：2014-09-03

Applicant: DENSO CORPORATION

Inventor： Mitsuyasu Matsuura ,  Keiko Akiyama

IPC: G01S13/93 ,  G01S7/52 ,  G01S7/527 ,  G01S15/93 ,  B60W30/08 ,  B60W40/02 ,  G01S15/04 ,  G01V3/12 ,  G01S7/539 ,  G01S15/87

CPC classification number: G01S7/5276 ,  B60W30/08 ,  B60W40/02 ,  G01S7/52001 ,  G01S7/52004 ,  G01S7/539 ,  G01S15/04 ,  G01S15/876 ,  G01S15/931 ,  G01S2007/52012 ,  G01S2013/9353 ,  G01V1/001 ,  G01V3/12

Abstract: An object detection apparatus mounted to a vehicle includes a transmitter, a receiver, a filter, a threshold calculator, and an object determinator. The transmitter transmits a probe wave in pulse form. The receiver receives a reflected wave of the probe wave. The filter passes, among the received reflected wave, only frequencies that are at least smaller than a pulse frequency of the probe wave. Based on an output of the filter, the threshold calculator calculates an objection determination threshold for determining presence and absence of an object. The object determinator determines the presence and absence of the object by using the objection determination threshold calculated by the threshold calculator.