With Plurality Of Transducers Patents (Class 367/129)
  • Patent number: 10909827
    Abstract: A method of detecting break-ins in an intrusion-detection barrier which includes an array of sensors in signal communication with one another and connected to a control unit may include: calibrating at least one of the sensors of the array, the calibrating including: applying mechanical stress to the barrier to cause the barrier to resonate at characteristic frequencies; and creating a digital filter, for the at least one of the sensors, configured to identify the characteristic frequencies; and/or detecting external forcing applied to the barrier, the external forcing having oscillation-forcing frequencies, the detecting including: applying the filter to identify the oscillation-forcing frequencies applied to the barrier, and discriminating the oscillation-forcing frequencies from the characteristic frequencies of the barrier; selecting at least one energy threshold value; calculating an energy value for each of the oscillation-forcing frequencies; and comparing each of the energy values with the at least on
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 2, 2021
    Assignee: TSEC S.P.A.
    Inventors: Fabio Stefanelli, Alessio Degani, Ugo Bertacchini
  • Patent number: 10908279
    Abstract: An eye tracking unit that includes one or more transmitters that transmit a signal (e.g., a radar signal or an ultrasonic sound) at an eye, one or more receivers that receive a reflection of the signal generated by interaction of the signal with the eye, and an eye orientation estimation module that estimates an orientation of the eye based on the reflected signal received by the one or more ultrasonic receivers and based on a model of the eye. The eye tracking unit may be part of a head-mounted display (HMD) that includes a display element configured to display content to a user wearing the HMD. The model of the eye may be trained by displaying a visual indicator on the electronic element and detecting a reflected signal corresponding to the eye looking at the visual indicator.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: February 2, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Brian Michael Scally, David R. Perek
  • Patent number: 10726708
    Abstract: The invention automatically detects a gunshot at a plurality of detection and response nodes distributed in an area, determines the location of the active shooter, and deploys a suppression response to the location of the active shooter from each of the plurality of detection and response nodes to prevent the active shooter from firing further gunshots.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: July 28, 2020
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Phillip E. Pace
  • Patent number: 10310124
    Abstract: A floating vessel based system generates a multidimensional seismic data set for a target area. The floating vessel based system includes a seismic source proximate to a floating vessel, providing a plurality of seismic energy pulses through water to the target area forming a plurality of reflected seismic energy pulses, a non-stationary seismic node configured for being towed from the floating vessel using at least one rope through the water, a non-stationary seismic node, and a second processor with second data storage on the floating vessel. The second data storage instructs the second processor to receive, each digital data series, combines the digital data series for all non-stationary seismic nodes utilized, and automatically generates multidimensional seismic data set for the target area.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: June 4, 2019
    Inventors: Lawrence Scott, Edward Majzlik
  • Patent number: 10083001
    Abstract: An audio signal processor generating an analog audio signal with directional characteristic from at least two 1-bit audio signals of digital microphones comprises a shift register of length n for bit-clocked throughput of at least one 1-bit audio signal and a combiner for combining at least two 1-bit audio signals to an interlaced 1-bit audio signal with doubled bit frequency.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: September 25, 2018
    Assignee: RUWISCH, Dietmar
    Inventor: Dietmar Ruwisch
  • Patent number: 9519058
    Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with a three-dimensional (3D) scanner. The 3D scanner generates 3D data. A point cloud or 3D model is constructed from the 3D data. The point cloud or 3D model is then analyzed to determine the condition of the structure.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: December 13, 2016
    Inventors: James M. Freeman, Roger D. Schmidgall, Patrick H. Boyer, Nicholas U. Christopulos, Jonathan D. Maurer, Nathan L. Tofte, Jackie O. Jordan, II
  • Patent number: 9503201
    Abstract: A method for transmitting power, data, and instructions using acoustic-electric channels having one or more transducer arrays, and to compensate for imperfect alignment of transducer arrays. Transducer arrays each include multiple transducer elements coupled to a channel barrier. Each element can be independently controlled, and misaligned transducers are selectively deactivated to improve overall channel performance. Arrays are optimized by testing different combinations of elements, and the combinations which are the most effective or efficient are used for transmissions. The system and the optimization features can be used to communicate between surfaces which have relative movement, such as between water craft hulls. Optimization can be periodic or constant to compensate for movement within the channel. The arrays can be used with curved substrates. Methods of designing adaptable arrays are also provided.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: November 22, 2016
    Inventors: Gary J. Saulnier, Kyle R. Wilt, Henry A. Scarton
  • Patent number: 9251436
    Abstract: Source signals emitted in a reverberant environment from different locations are processed by first receiving input signals corresponding to the source signals by a set of sensors. Then, a sparsity-based support estimation is applied to the input signals according to a reverberation model to produce estimates of the source signals and locations of a set of sources emitting the source signals.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 2, 2016
    Inventors: Petros T Boufounos, Jonathan Le Roux, Kang Kang, John R Hershey
  • Patent number: 9241155
    Abstract: Methods and systems for displaying a three dimensional image to a rotated viewer are presented. The roll and yaw of a viewer's eyes, with respect to a display, is tracked and used to adjust the orientation of a pair of stereoscopic images so as to maintain a three dimensional image when a viewer is rotated. Adjustment to the orientation of the pair of stereoscopic images may also factor in the orientation of a plurality of viewers, each viewer with a potentially different orientation with respect to the display.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: January 19, 2016
    Inventors: Vlad Stamate, Steven Osman
  • Patent number: 9151855
    Abstract: Embodiments of the invention provide a barrier detection system that includes a plurality of sensors that are coupled in series to a seismograph. The seismograph receives a signal from the sensors. The system includes a computer system including computer storage and a processor. The computer system is in communication with the seismograph so that the computer system receives signals from seismograph and stores them in the computer storage. The system can include an object detection system that can process the signals received by the computer system from the seismograph. The object detection system can select a first portion of the signal to analyze based a predetermined time interval, create a baseline value for the first portion, and select a plurality of peaks from the first portion. The object detection can also analyze an amplitude, frequency, and periodicity of the first portion to assess the origin of the signal.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 6, 2015
    Inventors: Glenn Spencer, Michael S. King
  • Patent number: 9057710
    Abstract: Internal components of power generation machinery, such as gas and steam turbines are inspected with an optical camera inspection system that is capable of automatically positioning the camera field of view (FOV) to an area of interest within the machinery along a pre-designated navigation path and capturing images without human intervention. Automatic camera positioning and image capture can be initiated automatically or after receipt of operator permission. The pre-designated navigation path can be defined by operator manual positioning of an inspection scope within the power machine or a similar one of the same type and recording of positioning steps for future replication. The navigation path can also be defined by virtual simulation.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: June 16, 2015
    Assignee: Siemens Energy, Inc.
    Inventors: Clifford Hatcher, Forrest R. Ruhge, Dennis H. Lemieux, Himanshu Bhatnagar, Yakup Genc, Richard Hatley
  • Publication number: 20150131411
    Abstract: Security events, such as gunshots may be determined using hybrid sensors. The hybrid sensors have at least two different elements that are sensitive to the security event, such as conventional microphone and a fiber optic microphone, which, in the case of a gunshot, permits a better scanning of the report of the gunshot to better determine its direction, signature features, and time of arrival. Additionally, sensor can be employed having multiple elements that are sensitive to a security event where at least one of the elements is not coplanar with the rest. This displacement along an orthogonal axis may be used to improve the ability of a network of such sensors to determine the direction and origin of a security event in a three dimensional system.
    Type: Application
    Filed: September 28, 2012
    Publication date: May 14, 2015
    Inventors: Judson Mannon Gudgel, Jonathan Torkelson, Stewart Reed
  • Patent number: 9030917
    Abstract: Disclosed is a system of transferring wireless power using an ultrasonic wave, including: an ultrasonic wave generating device converting and transferring electric energy to an ultrasonic wave; and an ultrasonic wave receiving device receiving the ultrasonic wave to convert the ultrasonic wave to electric energy, wherein the ultrasonic wave generating device includes a radiation plate with a plurality of ultrasonic elements and controls an effective area of the radiation plate by turning on/off the plurality of ultrasonic elements so that the ultrasonic wave receiving device is disposed at a position minimizing dispersion effect due to a circular radiation of the ultrasonic wave.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 12, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Q Lee, Gunn Hwang
  • Patent number: 9019797
    Abstract: Measurement data is received from first and second seismic sensors, where the first and second seismic sensors are oriented in opposite directions. Each of the first and second seismic sensors has a sensing element responsive to pressure and particle motion. The signals can be combined to remove the particle motion component of the measurement data and obtain pressure-only data. Alternatively, the signals can be combined to deghost the received measurement data.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: April 28, 2015
    Assignee: Westerngeco L.L.C.
    Inventor: Nicolas Goujon
  • Patent number: 9010484
    Abstract: A seismic source array includes a first source and a second source. The first source has a first spectral output and the second source has a second spectral output different than the first spectral output. The first source has a first total volume different than a second total volume of the second source.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 21, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Emmanuel Coste, Claudio Bagaini, Robert Montgomery Laws, Jon-Fredrik Hopperstad
  • Patent number: 9007871
    Abstract: Techniques and devices are disclosed for utilizing passively received audio signals to determine proximity of devices to other objects. In one embodiment, a method of passive proximity detection is provided that includes sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave. A second sound wave is also sensed and a second signal is generated. The method includes comparing characteristics of the first and second signals using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: April 14, 2015
    Assignee: Apple Inc.
    Inventor: Joel Armstrong-Muntner
  • Patent number: 8995222
    Abstract: There is provided herein a system and method of seismic exploration that produces improved locations and timings for ocean bottom seismometers. The instant method utilizes linearized inversion in conjunction with a conventionally accurate clock to provide both time and positioning for each OBS unit with high accuracy as compared with the prior art approach. Inversion is one mathematical tool that effectively performs the requisite triangulation. Furthermore, the clock drift can be accounted for in the inversion scheme. The inversion not only determines the OBS position and shot timing errors, but also estimates the accuracy of the position and timing determination.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: March 31, 2015
    Assignee: BP Corporation North America Inc.
    Inventors: Ganyuan Xia, Gerard Beaudoin
  • Publication number: 20150085615
    Abstract: For a motion modified steering vector, a motion module modifies a prior steering vector with a motion vector. A steering module spatially filters audio signals using the modified steering vector.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicant: LENOVO (Singapore) PTE, LTD.
    Inventors: Steven Richard Perrin, John Miles Hunt, Jian Li, John Weldon Nicholson, Song Wang, Jianbang Zhang
  • Publication number: 20150071038
    Abstract: A system for detecting a discharge of a firearm includes a detection component and a location component. The detection component is configured to detect a discharge of a firearm within a building using microphones associated with two or more telephones. The two or more telephones are communicatively coupled with a central server. The location component determines, based on audio data gathered by the microphones, a location at which the firearm was discharged within the building.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 12, 2015
  • Publication number: 20150066297
    Abstract: A multi-sonic sensor having a housing, a removable clamp member, a sonic sensor array, and a magnetically connected temperature bail that operates in three modes—a running average, an outlier average, and a string line steering mode.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 5, 2015
    Applicant: SAUER-DANFOSS INC.
    Inventors: Kevin W. Bloms, Richard J. Wolf, Michael Olson, Scott Lee Kessler, Jack Zeng
  • Patent number: 8971150
    Abstract: A method for measuring sea waves includes: transmitting ultrasonic waves from an ultrasonic transmitter 2 provided on a buoy 1 into the sea, and receiving the ultrasonic waves from three transponders 3 on the seabed together with the time signals; detecting distances between the transponders 3 and the ultrasonic transmitter 2 based on the propagation time of the ultrasonic waves; high-pass filtering the distance data to extract a short-term fluctuation component; preparing and solving linear equations to determine the displacement in the height direction of the short-term fluctuation component and obtain a wave height.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: March 3, 2015
    Assignees: Hitachi Zosen Corporation, The University of Tokyo, Institute of National Colleges of Technology, Japan
    Inventors: Teruyuki Kato, Yukihiro Terada, Toshihide Miyake, Haruhiko Yoshida
  • Patent number: 8958268
    Abstract: Disclosed is a user-interface target motion analysis (TMA) method using two-dimensional parameter control and speed zoom, and the method includes a first step of displaying a user-interface target motion analysis screen capable of selecting an input method; a second step of receiving the input method of a user; a third step of simultaneously calculating a speed and a course by speed zoom or simultaneously calculating a course and an initial range; a fourth step of calculating an initial range or a speed by speed zoom that is not calculated in the third step; and a step of generating a result of the target motion analysis using the parameters inputted through the first to fourth steps.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: February 17, 2015
    Assignee: Agency for Defense Development
    Inventor: In Soo Kim
  • Publication number: 20150003208
    Abstract: The method for instrumenting a container, especially intended to receive an assortment of materials, capable of being set moving in a preset coordinate system, said method comprises the following steps: placing at least one communicating element in the container on an internal surface of the container; and tracking the location of each communicating element over time in the preset coordinate system.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Mikaël Carmona, Roland Blanpain
  • Publication number: 20140376334
    Abstract: The invention relates to an acoustic monitoring system comprising at least two isolated acoustic receivers (101a, 101b), such as hydrophones, for receiving acoustic signals from an acoustic source (16) and capable of spatial displacement, a detector for detecting signals from the said receivers and a processing system (110) for processing the detected signals for determining a spatial position of the said receivers and/or a direction to the acoustic source (16). The invention further relates to a method of acoustic monitoring.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 25, 2014
    Applicant: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Laurent Fillinger, Mario Zampolli
  • Publication number: 20140321236
    Abstract: An underwater base handles an autonomous underwater vehicle. The underwater base includes a storing part configured to store the AUV; a control part configured to control the storing part; and a support part configured to support the control part and the storing part and to prevent a burial of the underwater base into the ocean bottom. The control part is further configured to guide the AUV while approaching a desired target position on the ocean bottom.
    Type: Application
    Filed: December 12, 2013
    Publication date: October 30, 2014
    Applicant: CGG SERVICES SA
    Inventors: Antoine LELAURIN, Thierry BRIZARD
  • Publication number: 20140301166
    Abstract: The invention consists of a method which comprises a plurality of steps for determining difference in distance from a reference point to at least two sensor modules 10, 20 that are located under water. The sensor modules 10, 20 comprise means for sending and receiving acoustic signals to each other and to a hydrophone 30 at the reference point. Connected to the hydrophone 30 is a calculating unit 40 that utilises arrival time of the received signals from the sensor modules to determine difference in distance from the sensor modules 10, 20 to the reference point.
    Type: Application
    Filed: September 11, 2012
    Publication date: October 9, 2014
    Applicant: SCANTRAWL AS
    Inventor: Henning Skjold-Larsen
  • Patent number: 8842495
    Abstract: Movements of objects within a space are adaptively detected by emitting ultrasound waves into the space and detecting reflections of the ultrasound waves, determining locations of objects within the space based on the ultrasound reflections, and determining real-time movements of the objects based on, in certain embodiments, (i) amplitude differences between amplitudes of echoes in a current wave cycle and an average amplitude over a plurality of wave cycles and (ii) elapsed times of the ultrasound reflections associated with the amplitude differences.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 23, 2014
    Assignee: Rethink Robotics, Inc.
    Inventor: Stephen Hersey
  • Publication number: 20140269200
    Abstract: In various embodiments, a passive bearing detector is disclosed. The passive bearing detector comprises a plurality of hydrophones. The plurality of hydrophones is arranged in a three-dimensional geometry. The three-dimensional geometry exposes each of the plurality of hydrophones to an ambient aquatic acoustic environment. The passive bearing detector further comprises a processor electrically coupled to the plurality of hydrophones. The processor is configured to determine a direction of arrival of an unknown broadband acoustic signal received by the plurality of hydrophones based on the phase difference of the unknown broadband acoustic signal at each of the plurality of hydrophones.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventors: Maurice D. Green, Steven J. McManus
  • Publication number: 20140241126
    Abstract: A sound source detection system for detecting a sound source (e.g., running sound of a vehicle) based on sound collected by microphones extracts characteristic amounts from the sound collected by the microphones, sets a plurality of classes according to the position of the sound source by a multi-class pattern recognition method (e.g., multi-class SVM) using the characteristic amounts, extracts characteristic amounts from sound collected by the microphones for detection of a sound source, determines a class to which the extracted characteristic amounts belong, from the preset plurality of classes, and estimates the sound source based on the class.
    Type: Application
    Filed: September 19, 2012
    Publication date: August 28, 2014
    Inventors: Ryuji Funayama, Jun Sato, Osami Yamamoto, Kensaku Asahi, Hideki Banno, Keiichi Yamada, Akira Ogawa, Yuichi Tanaka, Hiroyuki Hoshino
  • Patent number: 8817578
    Abstract: There is provided a sonic wave output device comprising, a receiving unit to receive wireless signals transmitted from a certain signal source, a determination unit to determine a parameter value depending on a location of the signal source using the wireless signals received by the receiving unit and a sonic wave output unit to output sonic waves with directionality toward a direction of the signal source based on the parameter value.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: August 26, 2014
    Assignee: Sony Corporation
    Inventors: Seiichi Izumi, Hiroyuki Fukada
  • Publication number: 20140169137
    Abstract: A measuring method of touch sensitive area size of a SAW sensor module is provided. The SAW sensor module comprises a substrate configured for propagating SAW, a first transmitter and a first receiver corresponding to a first axis, a second transmitter and a second receiver corresponding to a second axis. The SAWs emitted by the first transmitter at least pass through a first initial distance xi, propagate through a second axis length y after reflected by a first SAW reflecting bar, and enter the first receiver after reflected by a second SAW reflecting bar. The SAWs emitted by the second transmitter at least pass through a second initial distance yi, propagate through a first axis length x after reflected by a third SAW reflecting bar, and enter the second receiver after reflected by a fourth SAW reflecting bar.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
  • Publication number: 20140092711
    Abstract: A method for identifying a seismic even makes it possible to determine the direction to a source of a seismic disturbance both on the surface and in a three-dimensional space and increases the probability of correct identification of a seismic event and the accuracy of the determination of the direction to the source. A compact seismic detector for implementing the method reduces the cost of scanning and servicing a perimeter protection system constructed on the basis of such detectors. In the method, two or three pairs of seismic sensors which are divided by a distance and are oriented at an angle with respect to one another, for example mutually perpendicularly along the axes X, Y or along the axes X, Y, Z, respectively, are combined to form one seismic detector. The resultant seismic data are processed to determine the direction to the source of the seismic disturbance.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 3, 2014
    Inventor: Nodari V. BAGRATASHVILI
  • Publication number: 20140056106
    Abstract: Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 27, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-hoon JEONG, Kwang-cheol Oh, Kyu-hong Kim, So-young Jeong
  • Patent number: 8654606
    Abstract: A sensor assembly has first sensors spaced apart along a first direction, and second sensors oriented in a second direction generally orthogonal to the first direction. Differencing of outputs of the first sensors is performed, and differencing of outputs of the second sensors is performed. A signal output is produced by combining the differenced outputs of the first sensors and the differenced outputs of the second sensors, where the signal output represents a seismic response of a subterranean structure.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: February 18, 2014
    Assignee: WesternGeco L.L.C.
    Inventors: Everhard Muyzert, Pascal Edme, Julian Edward Kragh
  • Publication number: 20140003195
    Abstract: The present invention contemplates a variety of improved techniques including methods and apparatus for coordinating a plurality of devices, and more specifically, a method and apparatus for coordinating a plurality of devices to estimate or calculate various distances, relative positions, device attitudes, and other absolute and/or relative kinematic data.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 2, 2014
    Applicant: Net Power and Light, Inc.
    Inventors: Stanislav Vonog, Tara Lemmey, Maxim Bykov, Nikolay Surin
  • Patent number: 8616061
    Abstract: An ultrasonic sensor includes a transmitting device, a receiving device, and a circuit device. The circuit device determines that the receiving device receives an ultrasonic wave reflected from an object, when an output voltage of the receiving device is equal to or greater than a first threshold. The circuit device includes a humidity detection section configured to detect an ambient humidity of the transmitting and receiving devices and a threshold adjustment section configured to calculate, based on the detected ambient humidity, a sound pressure of the ultrasonic wave that is received by the receiving device after propagating over a round-trip distance between the ultrasonic sensor and the object. The threshold adjustment section reduces the first threshold, when the output voltage corresponding to the calculated sound pressure is less than a second threshold that is greater the first threshold.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 31, 2013
    Assignees: DENSO CORPORATION, Nippon Soken, Inc.
    Inventors: Makiko Sugiura, Yasuyuki Okuda, Takaaki Kawai, Takahiko Yoshida, Hisanaga Matsuoka, Toshiki Isogai, Mitsuyasu Matsuura
  • Publication number: 20130328688
    Abstract: A method or system for detecting a seismic event includes detecting a primary wave of a seismic event using at least one sensor at a measurement location; using at least one parameter of the detected primary wave to determine an estimated peak ground intensity at the measurement location without determining the magnitude of the seismic event; determining an epicenter of the seismic event; and estimating the intensity of the seismic event at a specified location using the determined estimated peak ground intensity and the distance of the specified location from the epicenter. The epicenter can be determined using sensors at a single location. A noise detection system can filter out detected signals that correspond to local vibrations rather than seismic events.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 12, 2013
    Inventors: Michael John Price, Gilead Wurman
  • Publication number: 20130308426
    Abstract: A method includes enabling a power supply of a ground sensor device to provide power to one or more components of the ground sensor device based on one or more rotations of a rotor of the ground sensor device.
    Type: Application
    Filed: April 25, 2013
    Publication date: November 21, 2013
    Applicant: The Boeing Company
    Inventors: David Scarlatti, David Esteban-Campillo, Javier Garcia
  • Publication number: 20130308427
    Abstract: Some aspects relate to an apparatus for detecting an edge of a material web. In some examples, the apparatus comprises an ultrasound sensor which comprises two or more separately readable ultrasound receiver elements and an ultrasound transmitter element, wherein the ultrasound transmitter element is designed and arranged such that it applies an ultrasound measurement signal to two or more of the ultrasound receiver elements.
    Type: Application
    Filed: April 26, 2013
    Publication date: November 21, 2013
  • Publication number: 20130272097
    Abstract: Systems, methods, and apparatus for matching pair-wise differences (e.g., phase delay measurements) to an inventory of source direction candidates, and application of pair-wise source direction estimates, are described.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Lae-Hoon Kim, Erik Visser
  • Patent number: 8515094
    Abstract: Systems and methods for parallel and distributed processing of audio signals produced by a microphone array are described. In one aspect, a distributed signal processing system includes an array of microphones and an array of processors. Each processor is connected to one of the microphones and is connected to at least two other processors, enabling communication between adjacent connected processors. The system also includes a computing device connected to each of the processors. Each microphone detects a sound and generates an audio signal, and each processor is configured to receive and process the audio signal sent from a connected microphone and audio signals sent from at least one of the adjacent processors to produce a data stream that is sent to the computing device.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 20, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Said, Ton Kalker, Majid Fozunbal
  • Publication number: 20130208569
    Abstract: A weld travel speed sensing system includes at least one sound sensor configured to sense a sound generated to allow determination of a position of a welding torch. The weld travel speed sensing system is configured to determine a position of a point on the welding torch based on the sensed sound.
    Type: Application
    Filed: January 10, 2013
    Publication date: August 15, 2013
    Inventor: Illinois Tool Works Inc.
  • Publication number: 20130128701
    Abstract: An audio source localization apparatus receives signals from a microphrine array (101), and a reference processor (105) generates at least three reference beams with different directional properties. An estimation processor (107) which generates simultaneous direction estimates for two sound sources, comprises a circuit (401) combining signals of the at least three reference beams with a beam shape parameter reflecting a shape of an audio beamform and a beam direction parameter reflecting a direction of an audio beamform for the combined signal. A cost processor (403) generates a cost measure indicative of an energy of the combined signal and a minimization processor (405) estimates values of the beam shape parameter and the beam direction parameter which correspond to a local minimum of the cost measure. A direction processor (407) then determines simultaneous direction estimates for two sound sources from the determined parameter values.
    Type: Application
    Filed: February 16, 2011
    Publication date: May 23, 2013
    Inventor: Rene Martinus Maria Derkx
  • Patent number: 8437223
    Abstract: The systems and methods described herein relate to an airborne shooter detection system having a plurality of sensors coupled to the body of an aircraft such as a helicopter. The system includes at least five sensors configured and arranged to disambiguate the location of a shooter. By measuring the arrival times of the shockwaves of projectiles at each of the sensors and determining the differences in the arrival times among sensors, the systems and methods may determine the location of one or more sources of the projectiles. A distance of at least ten meters separates two or more of the sensors. Such a separation is advantageous because it allows the system to disambiguate multiple shooters by resolving the curvature of the shockwave.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: May 7, 2013
    Assignee: Raytheon BBN Technologies Corp.
    Inventors: James E. Barger, Scott E. Ritter
  • Publication number: 20130100769
    Abstract: Disclosed are various embodiments of methods, devices and systems for performing a microseismic survey. According to some embodiments, microseismic signals are detected at seismic sensor stations deployed in two sets of seismic sensor lines, the seismic sensor lines within each set being substantially parallel to one another and the two sets of seismic sensor lines being mutually orthogonal. According to other embodiments, microseismic signals are detected at seismic sensor stations deployed in a hexagonal pattern. Such sensor geometries offer advantages over linear or radial arrays, including noise reduction, data acquisition flexibility as new wells are added to the survey area, and an improved distribution of data points above points in the subsurface.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: Global Microseismic Services, Inc.
    Inventors: Duncan W. Riley, Thomas John Fleure, John F. Gillooly, JR., Charles John Sicking
  • Patent number: 8355536
    Abstract: A passive electro-optical tracker uses a two-band IR intensity ratio to discriminate high-speed projectiles and obtain a speed estimate from their temperature, as well as determining the trajectory back to the source of fire. In an omnidirectional system a hemispheric imager with an MWIR spectrum splitter forms two CCD images of the environment. Three methods are given to determine the azimuth and range of a projectile, one for clear atmospheric conditions and two for nonhomogeneous atmospheric conditions. The first approach uses the relative intensity of the image of the projectile on the pixels of a CCD camera to determine the azimuthal angle of trajectory with respect to the ground, and its range. The second calculates this angle using a different algorithm. The third uses a least squares optimization over multiple frames based on a triangle representation of the smeared image to yield a real-time trajectory estimate.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: January 15, 2013
    Assignee: Light Prescriptions Innovators LLC
    Inventors: Ilya Agurok, Waqidi Falicoff, Roberto Alvarez
  • Patent number: 8325563
    Abstract: Systems and methods are disclosed for locating a weapon fire incident such as an acoustic transient from a gunshot, explosion, weapons launch, etc. In one exemplary implementation, there is provided a method of locating the incident from a combination of propagation phenomena including a discharge time of the weapon fire incident. Moreover, the method may include obtaining a first propagation parameter of the incident from one or more first sensors, obtaining the discharge time from another sensor, and processing the data to determine a location using a common time basis among sensor measurements. According to further exemplary implementations, the discharge time may include a transient event that has a different propagation velocity than that of sound in the atmosphere.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: December 4, 2012
    Assignee: Shotspotter, Inc.
    Inventors: Robert B. Calhoun, Robert L. Showen, James G. Beldock, Scott M. Manderville, Jason W. Dunham
  • Patent number: 8325562
    Abstract: A survey method giving improvements in weapons fire location systems is disclosed. In an urban system with a distributed array in the midst of many buildings that block signal paths or create echoes, methods are provided to measure signal propagation. A survey or tour of the covered region uses a moving signal source to probe propagation inside the region. Survey results may indicate where more or fewer sensors are needed. Survey results plus current measured noise gives prediction of instantaneous system sensitivity. In addition, multipath propagation may be used to determine a location even when only one or two sensors detect the signal. In such exemplary cases, triangulation may be replaced or augmented by pattern recognition. Further, signals of the survey need not be acoustic impulses such as gunfire, but may be RF signals, or coded continuous signals so that gunfire-like sounds would not disturb citizens in the area.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 4, 2012
    Assignee: Shotspotter, Inc.
    Inventor: Robert L. Showen
  • Patent number: 8311759
    Abstract: An inline inspection system and method for calibrating an acoustic monitoring structure installed along a pipe. The system includes a pipe inspection vehicle; a microprocessor configured to attach a time stamp to a measured distance traveled by the pipe inspection vehicle; an acoustic source attached to the pipe inspection vehicle and configured to generate sound waves inside the pipe, the sound waves having predetermined frequencies and predetermined amplitudes; plural sensors disposed along the pipe and configured to record time of arrivals and intensities of the sound waves generated by the acoustic source; and a processing unit configured to communicate with the plural sensors and receive the time of arrivals, intensities and frequencies of the sound waves from the plural sensors. The processing unit calibrates the acoustic monitoring structure by calculating a distance between the acoustic source and a first sensor of the plural sensors.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: November 13, 2012
    Assignee: PII (Canada) Limited
    Inventor: Jeff Sutherland
  • Publication number: 20120275273
    Abstract: A survey method giving improvements in weapons fire location systems is disclosed. In an urban system with a distributed array in the midst of many buildings that block signal paths or create echoes, methods are provided to measure signal propagation. A survey or tour of the covered region uses a moving signal source to probe propagation inside the region. Survey results may indicate where more or fewer sensors are needed. Survey results plus current measured noise gives prediction of instantaneous system sensitivity. In addition, multipath propagation may be used to determine a location even when only one or two sensors detect the signal. In such exemplary cases, triangulation may be replaced or augmented by pattern recognition. Further, signals of the survey need not be acoustic impulses such as gunfire, but may be RF signals, or coded continuous signals so that gunfire-like sounds would not disturb citizens in the area.
    Type: Application
    Filed: February 8, 2008
    Publication date: November 1, 2012
    Applicant: Shotspotter, Inc.
    Inventor: Robert L. Showen