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公开(公告)号：US4143350A
公开(公告)日：1979-03-06
申请号：US126373
申请日：1971-03-19
Applicant: John D. Keown
Inventor： John D. Keown
Abstract: A signal enhancement method and apparatus including a computer arranged to process underwater signals at discrete spectral intervals for facilitating spectral signature recognition of submarines. An average of the spectral intensities of broadband noise on either side of the discrete spectral interval is computed and then subtracted from the spectral intensities of the specific narrow-band frequencies generated by the submarine, thereby eliminating any false combinations of nonrandom sidebands with random background noise. The remainder is then integrated with time producing a continuously increasing cumulative energy level of the discrete spectral interval when the energy thereof is originating from the submarine.
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公开(公告)号：US3960007A
公开(公告)日：1976-06-01
申请号：US510078
申请日：1974-09-27
Applicant: Eugene T. Swensen
Inventor： Eugene T. Swensen
Abstract: This invention relates to an ultrasonic sensor utilizing simultaneous transmission and receipt of ultrasonic energy in a standing wave pattern to detect a target moving in front of a transducer and providing count, range, rate and direction information.
Abstract translation: 本发明涉及一种超声波传感器，其利用驻波图案中的超声能量的同时发送和接收来检测在换能器前移动的目标，并提供计数，范围，速率和方向信息。
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公开(公告)号：US3662326A
公开(公告)日：1972-05-09
申请号：US3662326D
申请日：1969-11-04
Applicant: HAZELTINE CORP
Inventor： DENNIS PAUL S JR
CPC classification number: G01V1/001 , G08B13/1663
Abstract: Disclosed are systems usable in detecting subaudible frequencies. In one embodiment a seismic detector is shown positioned in the earth and responding to the subaudible frequency vibrations caused by a moving person. A subaudible frequency signal is developed in response to the detected vibrations and is translated by modulating and mixer circuitry into an output signal in which each frequency component in the subaudible frequency signal is represented by a single corresponding audio frequency component. The output signal is supplied to a loudspeaker for aurally distinguishing the representative audio frequency components to detect the person. Other embodiments are also covered.
Abstract translation: 公开了可用于检测低音频率的系统。 在一个实施例中，示出了地震检测器定位在地球中并且响应于由移动人造成的不可听见的频率振动。 响应于检测到的振动而开发低音频率信号，并且通过调制和混频器电路将其转换成输出信号，其中，可忽略频率信号中的每个频率分量由单个对应的音频分量表示。 将输出信号提供给扬声器，用于听觉地区分代表性的音频分量以检测人。 其他实施例也被覆盖。
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公开(公告)号：US3500952A
公开(公告)日：1970-03-17
申请号：US3500952D
申请日：1967-12-20
Applicant: PITNEY BOWES INC
Inventor： BEEKEN BASIL B
CPC classification number: F15C1/005 , G01V1/001 , G10K5/02 , Y10T137/2196
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公开(公告)号：US3264604A
公开(公告)日：1966-08-02
申请号：US34732564
申请日：1964-01-20
Applicant: BARTLETT LAB INC
Inventor： BARTLETT PETER G
CPC classification number: G01R33/07 , B06B1/0655 , G01V1/001
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Patent Agency Ranking
公开(公告)号：US12114225B2
公开(公告)日：2024-10-08
申请号：US18211183
申请日：2023-06-16
Applicant: Ivani, LLC
Inventor： John Wootton , Matthew Wootton , Chris Nissman , Victoria Preston , Jonathan Clark , Justin McKinney , Claire Barnes
IPC: H04W24/00 , G01V3/12 , G11C11/22 , H04B17/27 , H04B17/318 , H04B17/373 , H04L1/00 , H04L5/00 , H04W4/02 , H04W4/029 , H04W4/30 , H04W4/33 , H04W4/50 , H04W4/80 , H04W64/00 , G01V1/00
CPC classification number: H04W4/023 , G01V3/12 , G11C11/2257 , G11C11/2259 , G11C11/2273 , G11C11/2293 , G11C11/2297 , H04B17/27 , H04B17/318 , H04B17/373 , H04L1/0018 , H04L5/006 , H04W4/02 , H04W4/029 , H04W4/30 , H04W4/33 , H04W4/50 , H04W4/80 , H04W64/00 , G01V1/001 , G11C11/221
Abstract: Systems and methods for detecting the presence of a body in a network without fiducial elements, using signal absorption, and signal forward and reflected backscatter of RF waves caused by the presence of a biological mass in a communications network.
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87.发明公开公开(公告)号：US20240310539A1
公开(公告)日：2024-09-19
申请号：US18183788
申请日：2023-03-14
Applicant: Astro Technology Group, LLC
Inventor： David Verl Brower
Abstract: Disclosed herein are embodiments of a sensor displacement device. The sensor displacement device is engaged with an optical fiber sensor (or other suitable form of a sensor) and slows recover of the sensor when displaced (e.g., deformed) from a static state. In doing so, the sensor displacement tuning body serves to enable amplification of signal detection associated with a given instance of sensor displacement.
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公开(公告)号：US12078058B2
公开(公告)日：2024-09-03
申请号：US17659982
申请日：2022-04-20
Applicant: Weatherford Technology Holdings, LLC
Inventor： Kunal K. Tiwari , Jess V. Ford , Brian A. Mohon , Mohand Arezki Belloul
CPC classification number: E21B47/16 , G01B17/02 , G01N29/045 , G01N29/11 , G01V1/001 , G01V1/44 , G01V1/52
Abstract: Methods and systems for logging a wellbore having a casing using ultrasonic logging are described. Traditional ultrasonic logging involves using a piezoelectric transducer that is spaced from the inner surface of the casing by a least a distance referred to as the “far-field” distance. Logging in the “far-field,” as traditionally done, avoids destructive interference. The methods and systems described herein allow logging in the “near-field.” Logging in the near-field using the described methods and systems overcomes several difficulties associated with acoustic logging, particularly in attenuative, dispersive, and deviated environments.
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公开(公告)号：US20240127681A1
公开(公告)日：2024-04-18
申请号：US18485211
申请日：2023-10-11
Applicant: NEC Laboratories America, Inc.
Inventor： Sarper OZHARAR , Yue TIAN , Yangmin DING , Ting WANG
Abstract: A solar powered, self-contained DFOS extender that includes a wide-angle camera and a microphone. The DFOS extender monitors the perimeter constantly or at predetermined time intervals both visually and acoustically. It analyses these signals and if an alarming event is detected (such as an animal, a human, a car, or a truck seen or heard), then the DFOS extender generates a coded vibration via its in-built acoustic modem. These coded vibrations are detected by the fiber and an event log is generated. Consequently, a trespasser or false alarms (animals) are detected before they are within detectable distance of the underground DFOS optical sensor fiber. Advantageously, our DFOS extender can be placed in critical locations along a border where an increased detection range is desired and may later be relocated/reinstalled at other locations as well.
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90.发明授权公开(公告)号：US11874160B2
公开(公告)日：2024-01-16
申请号：US17088195
申请日：2020-11-03
Applicant: Verizon Patent and Licensing Inc.
Inventor： Tiejun J. Xia , Glenn A. Wellbrock , Ming-Fang Huang , Ting Wang , Yoshiaki Aono
Abstract: A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.
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