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公开(公告)号：US20240236563A1
公开(公告)日：2024-07-11
申请号：US18611328
申请日：2024-03-20
CPC分类号： H04R3/007 , G01S15/04 , H04R29/001 , H04R2400/01 , H04R2430/01 , H04R2499/11
摘要： The invention relates to a method and system for detection of an object in proximity to an electronic device, which method comprises the steps of:—producing, via the processing unit using one or more parameters relating to a loudspeaker, a controlled audio signal;—amplifying using an amplifier at least said controlled audio signal, thereby producing an amplified audio signal at an amplifier output; wherein an amplitude of the controlled audio signal is such that the amplified audio signal is less than or equal to an amplitude determined to be safe for the loudspeaker in view of the one or more parameters,—analyzing at least one of said one or more parameters relating to the loudspeaker to detect a change in response of the loudspeaker; the change in response being caused by an object that is present in the acoustical path of the loudspeaker,—determining, based upon the analysis whether the object is located in close proximity to the electronic device.
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公开(公告)号：US11971476B2
公开(公告)日：2024-04-30
申请号：US17364011
申请日：2021-06-30
发明人： Lei Ding , Srinath Mathur Ramaswamy , Brian Burk , Baher Haroun
CPC分类号： G01S15/04
摘要： Ultrasonic audio processing circuitry and a method useful in ultrasonic presence detection. An ultrasonic burst generator produces an ultrasonic burst signal at one or more ultrasonic frequencies, and an equalizer equalizes that ultrasonic burst signal according to frequency response characteristics of the speaker and microphone at those ultrasonic frequencies. Driver circuitry drives a speaker with the ultrasonic burst signal, which may be combined with an audible audio signal. An ultrasonic separation filter separates an ultrasonic portion from a signal received at a microphone, and processing circuitry is provided to determine a delay time of an echo corresponding to the ultrasonic burst signal in that separated ultrasonic portion of the received signal. In another aspect, the equalizer equalizes an ultrasonic portion of the signal received at a microphone, according to frequency response characteristics of the speaker and microphone at the ultrasonic frequencies of the burst.
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公开(公告)号：US11885868B2
公开(公告)日：2024-01-30
申请号：US16408779
申请日：2019-05-10
发明人： Jacob M. Sasanecki
CPC分类号： G01S13/04 , G01S13/003 , G01S15/003 , G01S15/04 , G01S17/003 , G01S17/04
摘要： A pallet safety system includes one or more of a pallet bed monitoring system, a pallet height monitoring system, and a pallet interface monitoring system, each of which provide an emitter and a detector. The safety system may be configured to be retrofit to an existing pallet system and is enabled to monitor the presence of unwanted obstructions at various regions proximate to the pallet bed opening, including a plane region above and parallel to the pallet beds, a region proximate to an interface between the pallet system and a material processing system, and a region between an upper and lower pallet.
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公开(公告)号：US20230417857A1
公开(公告)日：2023-12-28
申请号：US17746143
申请日：2022-05-17
IPC分类号： G01S3/808 , G01S15/931 , G01S15/04 , G01S15/87 , G01S15/10
CPC分类号： G01S3/808 , G01S15/931 , G01S15/10 , G01S15/876 , G01S15/04
摘要： A computer includes a processor and a memory, and the memory stores instructions executable to receive range data from a plurality of ultrasonic sensors on a vehicle, determine two ellipses from respective pulses of the range datadetermine a plurality of intersections of the two ellipses, exclude a subset of the intersections, and actuate a component of the vehicle based on the nonexcluded intersections. The ultrasonic sensors have respective fields of view, the fields of view overlap, and the range data includes distances traveled by pulses emitted by the ultrasonic sensors and received by the ultrasonic sensors. Each pulse is emitted by a different one of the ultrasonic sensors than received that pulse. Excluding the subset of the intersections is based on the fields of view.
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公开(公告)号：US20230406671A1
公开(公告)日：2023-12-21
申请号：US18249978
申请日：2021-10-28
申请人： Inventio AG
发明人： Lars Dehmel , Felix Pfeifer
CPC分类号： B66B1/3476 , B66B27/00 , B66B5/0012 , G01S15/04 , G01S7/53 , B66B29/005
摘要： A method for detecting changes in an area to be monitored of a conveying system utilizes a sound sensor and an evaluation unit connected to the sound sensor. The method includes emitting an acoustic pulse into the area to be monitored, recording an acoustic response signal of the pulse as an actual signal, determining an envelope of the actual signal, and detecting changes on the basis of the envelope.
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公开(公告)号：US20230400574A1
公开(公告)日：2023-12-14
申请号：US18140517
申请日：2023-04-27
申请人： APPLE INC.
发明人： Barak Baum , Yoav Feinmesser , Naftali Sommer
CPC分类号： G01S17/04 , G01S17/87 , G01S17/48 , G01S7/52004 , G01S15/04
摘要： A technique for determining a presence of a person in a room may include an electronic device transmitting an electromagnetic wireless signal of a first sensor. The technique may include receiving an electromagnetic return signal from the electromagnetic wireless signal. The technique may include detecting a potential target in the room based on the electromagnetic return signal. The technique may include determining that the potential target is in the room using a second sensor. Responsive to determining the potential target is in the room, the technique may include saving a training signature of the electromagnetic return signal for training a machine learning model. This technique can be repeated to obtain a set of training signatures corresponding to potential targets. The technique may include training, using the set of training signatures, the machine learning model to detect when a target is in the room using the first sensor.
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公开(公告)号：US20230305143A1
公开(公告)日：2023-09-28
申请号：US18326765
申请日：2023-05-31
申请人： DENSO CORPORATION
发明人： Yu KOYAMA , Kohei KOZUKI
IPC分类号： G01S15/04 , G01S15/931 , G01S7/52
CPC分类号： G01S15/04 , G01S15/931 , G01S7/52004
摘要： An object detection device includes a transceiver that transmits ultrasonic waves encoded with frequency modulation and receives an ultrasonic wave and outputs a reception signal, a first quadrature detector that generates and outputs a complex reception signal based on quadrature detection of the reception signal, a second quadrature detector that generates and outputs a complex reference signal based on quadrature detection of the reference signal, a correlation filter that performs correlation detection between the complex reception signal and the complex reference signal and outputs a correlation signal, and a code determiner that determines a code included in the reception signal based on the correlation signal.
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公开(公告)号：US11768289B2
公开(公告)日：2023-09-26
申请号：US17328704
申请日：2021-05-24
发明人： Todd A. Impola , Siddarth Desikan , Nathaniel Doy , Lawrence A. Mianzo , Mark E. Hartman , Shanmukha Bhumireddy , Sri Sekharan
IPC分类号： G01S17/04 , G01S17/931 , G01S15/931 , G01S13/931 , G01S15/04 , G01S13/04
CPC分类号： G01S17/04 , G01S13/04 , G01S13/931 , G01S15/04 , G01S15/931 , G01S17/931
摘要： A work machine, light detection and ranging (LiDAR) system, and method of reducing false object detections are disclosed. The work machine may include a frame, a power unit, a locomotive device, and the LiDAR system. The LiDAR system may include at least one laser, at least one sensor, a bracket, and a control unit configured to execute an object detection program. The LiDAR system is configured to exclude from its object detection program a plurality of beams emitted toward the work machine through a design of the bracket and/or software methods of the control unit. The method may include storing a database of exclude coordinates and using the database to filter out undesirable data samples from the object detection program.
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公开(公告)号：US11686831B2
公开(公告)日：2023-06-27
申请号：US16464798
申请日：2016-11-30
申请人： SAAB AB
发明人： Oskar Viklund
摘要： The present disclosure relates to a Sonar device (1) for detection of underwater objects. The sonar device (1) comprises a body element (2) comprising a piezo electric element (3). The sonar device further comprises a holder (4) adapted to hold the piezo electric element (3). The holder (4) is arranged to centre the piezo electric element (3) within said body element (2). The holder (4) is arranged such that the piezo electric element (3) is held firmly in place and also provide for that detection can be made omni-directionally. A method for manufacturing a holder (4) and a sonar device (1) is also disclosed.
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公开(公告)号：US20190170872A1
公开(公告)日：2019-06-06
申请号：US16205486
申请日：2018-11-30
发明人： Nobumitsu HIRANO , Hajime FUJIWARA , Kenji TAKEBUCHI , Hiroyuki KUCHIJI , Akira SESHIMOTO , Kimiyoshi YAMASAKI , Kenichi TAGUCHI , Masaya OTOKAWA
CPC分类号： G01S15/04 , B06B1/02 , B06B1/0215 , B06B2201/70 , E05F15/40 , E05F15/73 , E05F2015/763 , E05Y2400/53 , E05Y2400/54 , E05Y2900/531 , G01S7/521 , G01S15/003
摘要： An ultrasonic sensor in the invention includes an ultrasonic transmitter, an ultrasonic receiver, and a detector. The ultrasonic transmitter transmits pulse-shaped ultrasonic waves to a thin plate to excite the thin plate. The ultrasonic receiver receives direct waves and reflected waves among the ultrasonic waves propagating in the thin plate excited by the pulse-shaped ultrasonic waves, the direct waves propagating only in the thin plate, and the reflected waves radiating outward, then reflected by the object, and returning to the thin plate. The detector detects the object present near the thin plate on the basis of a difference between a time at which the ultrasonic receiver receives the direct waves and a time at which the ultrasonic receiver receives the reflected waves.
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