公开(公告)号：US11927688B2

公开(公告)日：2024-03-12

申请号：US17285276

申请日：2020-05-15

申请人： Battelle Memorial Institute

发明人： Eric G. Gonzalez ,  Michael S. Hughes ,  Anton S. Sinkov

IPC分类号： G01S5/22 ,  G01S3/808 ,  G01S5/18 ,  H04R1/08 ,  H04R3/00

CPC分类号： G01S5/22 ,  G01S3/808 ,  G01S5/18 ,  G01S2205/06 ,  H04R1/08 ,  H04R3/00

摘要： Firearm discharge location systems and methods are described. According to one aspect, a firearm discharge location system includes a plurality of microphones spaced from one another, timing circuitry configured to generate a plurality of asynchronous timing references, wherein data capture operations with respect to the microphones of a first pair are synchronized with one another using a first of the timing references and data capture operations with respect to the microphones of a second pair are synchronized with one another using a second of the timing references, and processing circuitry configured to use outputs of the first and second pairs of the microphones to identify a location of a firearm discharge.

公开(公告)号：US20230324497A1

公开(公告)日：2023-10-12

申请号：US17767855

申请日：2020-10-09

申请人： Toposens GmbH

发明人： Alexander RUDOY ,  Rinaldo Giovanni PERSICHINI ,  Victor TOMASHEVICH ,  Christian WELK ,  Michele CORONA

IPC分类号： G01S3/808 ,  G01S5/22 ,  G01S5/20 ,  G01S7/53

CPC分类号： G01S3/8083 ,  G01S5/22 ,  G01S5/20 ,  G01S7/53

摘要： A receiving unit is disclosed, including at least three receivers, each configured to receive an ultrasonic signal with a wavelength λ from the transmitting unit. A first receiver is arranged at a distance of at most one half wavelength λ/2 of the ultrasonic signal from a second receiver and from a third receiver. The at least three receivers are arranged in one plane. A processor is configured to determine the respective time-of-flight from the ultrasonic signal received at each of the at least three receivers. The respective time-of-flight is a time that the ultrasonic signal requires from the transmitting unit at a defined start time to the respective receiver. The processor is further configured to determine the three-dimensional position and/or direction of the transmitting unit from the determined times-of-flight and the arrangement of the at least three receivers.

公开(公告)号：US20230213611A1

公开(公告)日：2023-07-06

申请号：US18054525

申请日：2022-11-10

申请人： SHENZHEN SHOKZ CO., LTD.

发明人： Le XIAO ,  Yongshuai YUAN ,  Yujia HUANG ,  Fengyun LIAO ,  Xin QI

IPC分类号： G01S5/22

CPC分类号： G01S5/22

摘要： Some embodiments of the present disclosure provide a method for locating a vibration signal source. The method may include obtaining sensing signals of at least two vibration sensing devices located at different locations, each of the sensing signals being generated by one of the at least two vibration sensing devices by sensing a vibration signal generated by a vibration, which is from the same vibration signal source; determining, based on the sensing signals, a time difference between time points when the at least two vibration sensing devices located at different locations receive the vibration signal; and determining, based on the time difference, a location of the vibration signal source.

公开(公告)号：US20180266999A1

公开(公告)日：2018-09-20

申请号：US15917335

申请日：2018-03-09

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Takashi Usui

IPC分类号： G01N29/14 ,  G01S5/22 ,  G01M5/00 ,  G01N29/44

CPC分类号： G01N29/14 ,  G01M5/0033 ,  G01N29/07 ,  G01N29/2412 ,  G01N29/42 ,  G01N29/4472 ,  G01N2291/011 ,  G01N2291/0258 ,  G01N2291/0289 ,  G01S5/22

摘要： According to one embodiment, a position location system includes a plurality of sensors, a time measurement unit, an angle calculation unit, and a position location unit. The plurality of sensors are arranged at a predetermined sensor interval. The time measurement unit measures a difference in time at which elastic waves arrive at the plurality of sensors. The angle calculation unit calculates an incident angle at which the elastic waves are incident on the plurality of sensors on the basis of the time difference. The position locator locates a source of the elastic waves on the basis of the incident angle. The predetermined sensor interval is a distance determined on the basis of a sound velocity of elastic waves propagating in a structure in which the plurality of sensors are arranged and a frequency characteristic of the sensor.

公开(公告)号：US20180210065A1

公开(公告)日：2018-07-26

申请号：US15875205

申请日：2018-01-19

申请人： U.S.A., AS REPRESENTED BY THE ADMINISTRATOR OF THE NASA

发明人： Qamar A. Shams ,  John W. Stoughton ,  Allan J. Zuckerwar

IPC分类号： G01S5/22

CPC分类号： G01S5/22 ,  G01S3/801 ,  G01S3/8083 ,  G01S3/86

摘要： A method for recognizing infrasound events includes detecting infrasonic source using one or more microphone arrays each having three equally-spaced infrasound microphones. The method includes identifying, via a data acquisition system (DAS), a level of coherence of the detected infrasonic acoustic signals from each possible pair of microphones and recognizing the infrasound source using the coherence and a time history of the detected signals. The method may include estimating source properties via the DAS, including a magnitude, azimuth angle, and elevation angle, and executing a control action in response to the estimated properties. A system includes the array and the DAS. The array may be positioned above or below ground, and may be connected to one or more aircraft in some embodiments.

公开(公告)号：US09891308B2

公开(公告)日：2018-02-13

申请号：US14812632

申请日：2015-07-29

申请人： SYMBOL TECHNOLOGIES, LLC

发明人： Russell E. Calvarese ,  Richard J. Lavery

IPC分类号： G01S5/26 ,  G01S5/22

CPC分类号： G01S5/26 ,  G01S5/22

摘要： A transmitter subsystem periodically transmits ranging signals at transmit times, and a receiver subsystem receives the ranging signals at receive times within a receiver window having an adjustable time duration. A real-time position of a mobile device supporting one of the subsystems is determined based on differences between the receive and transmit times. An expected arrival time for the transmitted ranging signals is determined based on the real-time position of the mobile device. Each receive time is compared with the expected arrival time to obtain a consistency rate of the ranging signals that are received by the receiver subsystem directly from the transmitter subsystem. The time duration of the receiver window is dynamically adjusted based on the consistency rate.

公开(公告)号：US09791537B2

公开(公告)日：2017-10-17

申请号：US15315017

申请日：2015-05-22

申请人： KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

发明人： Hyu-Sang Kwon ,  WanHo Cho

IPC分类号： H04R3/00 ,  G01S3/808 ,  G01H3/00 ,  H04R1/40 ,  G01S13/28 ,  G01R31/316

CPC分类号： G01S3/808 ,  G01H3/00 ,  G01R31/316 ,  G01S5/22 ,  G01S5/30 ,  G01S11/14 ,  G01S13/28 ,  H04R1/40 ,  H04R1/406 ,  H04R3/00 ,  H04R3/005 ,  H04R2430/23

摘要： The present invention relates to a time delay estimation device. The time delay estimation device of the present invention includes a sound signal detection unit configured to detect sound signals through a plurality of microphones, a frequency domain conversion unit configured to convert the detected sound signals into signals of a frequency domain, and a time delay estimation unit configured to estimate a time delay on the basis of a slope of a phase difference between the sound signals converted into the frequency domain.

公开(公告)号：US20170285168A1

公开(公告)日：2017-10-05

申请号：US15509584

申请日：2015-10-01

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： TAKUMA NAKAGAWA

IPC分类号： G01S15/93 ,  G01S15/87 ,  G08G1/16

CPC分类号： G01S15/931 ,  B60R21/00 ,  G01S5/22 ,  G01S15/878 ,  G01S15/93 ,  G08G1/16

摘要： An object detection device of the present disclosure includes three reception units for receiving reflected waves resulting from reflection of a transmission wave by an object within a detection range, and a determination unit for determining presence or absence of an object to be avoided based on outputs of the three reception units. The determination unit calculates first coordinates and second coordinates at which an object is estimated to be present, based on reception times from when a transmission wave is transmitted until reflected waves are received by the three reception units, and determines whether or not the object needs to be avoided, based on a distance between the first coordinates and the second coordinates.

公开(公告)号：US09753119B1

公开(公告)日：2017-09-05

申请号：US14167813

申请日：2014-01-29

申请人： Amazon Technologies, Inc.

发明人： Kavitha Velusamy ,  Ning Yao ,  Wai Chung Chu ,  Sowmya Gopalan ,  Qiang Liu ,  Rahul Agrawal ,  Manika Puri

IPC分类号： G01S5/20

CPC分类号： G01S5/20 ,  G01S5/18 ,  G01S5/22 ,  G01S17/023 ,  G01S17/36 ,  G01S17/42 ,  G01S17/46 ,  G01S17/89

摘要： A system may utilize sound localization techniques, such as time-difference-of-arrival techniques, to estimate an audio-based sound source position from which a sound originates. An optical image or depth map of an area containing the sound source location may then captured and analyzed to detect an object that is known or expected to have produced the sound. The position of the object may also be determined based on the analysis of the optical image or depth map. The position of the sound source may then be determined based at least in part on the position of the detected object or on a combination of the audio-based sound source position and the determined position of the object.

公开(公告)号：US20170234966A1

公开(公告)日：2017-08-17

申请号：US15283247

申请日：2016-09-30

申请人： QUALCOMM Incorporated

发明人： Ayman Naguib ,  Michael Taveira ,  Nayeem Islam

IPC分类号： G01S5/22 ,  G01H3/08 ,  G01S5/30

CPC分类号： G01S5/22 ,  G01S5/0263 ,  G01S5/30 ,  G01S13/86

摘要： Apparatuses and methods are described herein for identifying an Unmanned Aerial Vehicle (UAV) by a central server connected to a first detection device and a plurality of detection devices, including, but not limited to, receiving, by the central server, information related to the UAV from the first detection device, selecting, by the central server, a second detection device from a plurality of detection devices connected to the central server, and sending, by the central server, the information to the second detection device.