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公开(公告)号：US12111395B2
公开(公告)日：2024-10-08
申请号：US18299928
申请日：2023-04-13
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Marek Hustava , Pavel Kostelnik
CPC classification number: G01S15/931 , G01S7/52004 , G01S7/523 , G01S7/527 , G01S7/536 , G01S15/10 , G01S15/101
Abstract: An illustrative controller includes: a transmitter to drive an acoustic transducer to generate a first acoustic burst and a second acoustic burst; a receiver coupled to the acoustic transducer to sense a first response to the first acoustic burst and a second response to the second acoustic burst; and a processing circuit to derive output data from the first and second responses in part by determining an offset frequency difference between the first and second responses, wherein the first acoustic burst has a first characteristic frequency and the second acoustic burst has a second characteristic frequency different from the first characteristic frequency.
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公开(公告)号：US20240248188A1
公开(公告)日：2024-07-25
申请号：US18156995
申请日：2023-01-19
Applicant: GM Cruise Holdings LLC
Inventor： Anurup Guha , Amanda Lind
IPC: G01S7/52
CPC classification number: G01S7/52004 , G01S2007/52011 , G01S15/931
Abstract: Systems and techniques are provided for deicing/defrosting an ultrasonic sensor using frequency tuning. An example method can include determining that a radiation surface of a housing of an acoustic sensor includes a layer of frozen precipitation, wherein the housing contains a transducer configured to emit sound waves through the radiation surface and receive sound waves that are reflected from a target and pass through the radiation surface to the transducer; determining resonance frequency for sound waves that yields a shear stress on an interface between the radiation surface and the layer of frozen precipitation on the radiation surface, wherein the shear stress exceeds an adhesive shear strength of the layer of frozen precipitation; generating the sound waves having the resonance frequency; and removing the layer of frozen precipitation on the radiation surface based on the sound waves having the resonance frequency.
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公开(公告)号：US20240230869A1
公开(公告)日：2024-07-11
申请号：US18562330
申请日：2022-05-10
Applicant: VALEO SCHALTER UND SENSOREN GMBH
Inventor： Fabian Haag , Jose Renan Veliz Argueta , Thomas Frintz , Paul Bou-Saleh
IPC: G01S7/52 , G01S15/931
CPC classification number: G01S7/52004 , G01S15/931 , G01S2007/52009
Abstract: Method for determining a function state (FZ) of an ultrasonic sensor (2) for a vehicle (1), having the steps of: a) applying (S1) an electrical test signal (P) to the ultrasonic sensor (2); b) detecting (S2) an electrical response signal (A) from the ultrasonic sensor (2); c) determining (S3) a phase-frequency response (PF) comprising the phase angle (a) of the detected response signal (A) for the applied test signal (P) on the basis of an excitation frequency (f) of the applied test signal (P); d) comparing (S4) at least a first phase angle (P1) below and a second phase angle (P2) above a resonant frequency (R) in the determined phase-frequency response (PF) with a respective expected phase angle (PE1, PE2); e) correcting (S5) the determined phase-frequency response (PF) on the basis of the comparison; and f) determining (S6) the function state (FZ) on the basis of the corrected phase-frequency response (PFK).
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4.发明授权
公开(公告)号：US12000966B2
公开(公告)日：2024-06-04
申请号：US17294870
申请日：2019-11-07
Applicant: Valeo Schalter und Sensoren GmbH
Inventor： Maximilian Poepperl , Raghavendra Gulagundi , Fabian Haag , Bastian Hafner
IPC: G01S15/00 , G01S7/52 , G01S15/10 , G01S15/34 , G01S15/931
CPC classification number: G01S7/52004 , G01S15/104 , G01S15/34 , G01S2007/52009 , G01S15/931
Abstract: A method and an analysis system for determining a state of a diaphragm of an ultrasound sensor during operation is disclosed. The diaphragm of the ultrasound sensor is excited with a first excitation signal in a predefined first frequency profile. Based on this, a first voltage profile, which depends on a frequency of the first excitation signal, is measured. Analogously, a second voltage profile is determined by applying a second excitation signal to the diaphragm and then carrying out a measurement. These two voltage profiles are shifted so that respective positions of maxima of the two voltage profiles are matched to each other in a predefined frequency range. A third voltage profile, which runs between the shifted first and second voltage profiles, is determined. Based on the third voltage profile, electrical parameters are determined by a model for continuous excitation of the diaphragm to determine the state of the diaphragm.
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公开(公告)号：US11982739B2
公开(公告)日：2024-05-14
申请号：US17096477
申请日：2020-11-12
Applicant: GoPro, Inc.
Inventor： Stepan Moskovchenko , Joseph Anthony Enke
IPC: G01S15/10 , B64C39/02 , B64D47/00 , B64U101/30 , G01S7/52 , G01S7/527 , G01S7/529 , G01S15/86 , H04L67/12
CPC classification number: G01S15/10 , B64C39/024 , B64D47/00 , G01S7/52004 , G01S7/529 , G01S15/86 , B64U2101/30 , B64U2201/10 , B64U2201/20 , G01S7/5273 , H04L67/12
Abstract: Ultrasonic ranging state management for a UAV is described. A transducer transmits an ultrasonic signal and receives an ultrasonic response thereto using a gain value. A noise floor estimation mechanism determines a noise floor estimate. A state mechanism sets an ultrasonic ranging state used by the transducer to a first ultrasonic ranging state. The transducer transmits an ultrasonic signal and responsively receive an ultrasonic response to the ultrasonic signal using a gain value according to the noise floor estimate. The state mechanism processes the ultrasonic response to determine whether to determine a new noise floor estimate, adjust the gain value used by the transducer, or change the ultrasonic ranging state of the UAV to a second ultrasonic ranging state. The configurations of the first and second ultrasonic ranging states differ as to, for example, power and gain levels used by the transducer to receive ultrasonic responses.
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公开(公告)号：US11977153B2
公开(公告)日：2024-05-07
申请号：US17807305
申请日：2022-06-16
Applicant: DENSO CORPORATION
Inventor： Yu Koyama , Satoru Noro , Tetsuya Aoyama
IPC: G01S15/931 , G01S7/52
CPC classification number: G01S15/931 , G01S7/52004
Abstract: An object detection apparatus detects an object in a vicinity of a moving body in a state of being mounted to the moving body. The object detection apparatus measures a reverberation frequency that is a frequency of a reverberation signal that is generated in a transceiver that externally transmits a transmission wave that is an ultrasonic wave and receives a reception wave that includes a reflected wave of the transmission wave from the object. The object detection apparatus detects a specific segment that is an occurrence segment in which occurrence of beat that is attributed to a plurality of reverberation frequency components is confirmed in the reverberation signal, or a non-occurrence segment in which the occurrence of beat does not significantly occur. The object detection apparatus sets a measurement segment in which the reverberation frequency is measured in the non-occurrence segment based on a detection result of the specific segment.
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公开(公告)号：US11960003B2
公开(公告)日：2024-04-16
申请号：US17122440
申请日：2020-12-15
Applicant: Mitsubishi Electric Corporation
Inventor： Kentaro Ishikawa
IPC: G01S15/93 , G01P3/00 , G01S7/52 , G01S15/931 , G08G1/16
CPC classification number: G01S15/931 , G01P3/00 , G01S7/52004 , G08G1/16
Abstract: A control device includes: an object detector to output a signal for causing a transmitter to transmit an object detection ultrasonic wave, obtain an output signal from a receiver, and detect an object; an abnormality detector to perform, as an abnormality detection process, outputting a signal for causing the transmitter to transmit an abnormality detection ultrasonic wave whose transmission time is longer than that of the object detection ultrasonic wave, obtaining, from the receiver, an output signal in a period in which the abnormality detection ultrasonic wave is to be received as a direct wave, and detecting an abnormality in the transmitter or receiver when no signal of the direct wave is included; and a determiner to obtain a speed of a vehicle including the transmitter and receiver, and when the speed is not greater than a threshold, cause the abnormality detector to start the abnormality detection process.
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公开(公告)号：US20240094727A1
公开(公告)日：2024-03-21
申请号：US18514086
申请日：2023-11-20
Applicant: Waymo LLC
Inventor： Stephanie McArthur , Mark Alexander Shand , Colin Braley
CPC classification number: G05D1/0055 , G01C21/20 , G01S7/40 , G01S7/497 , G01S7/52004 , G05D1/0255 , G05D1/0257 , G05D1/0259
Abstract: An example method involves detecting a sensor-testing trigger. Detecting the sensor-testing trigger may comprise determining that a vehicle is within a threshold distance to a target in an environment of the vehicle. The method also involves obtaining sensor data collected by a sensor of the vehicle after the detection of the sensor-testing trigger. The sensor data is indicative of a scan of a region of the environment that includes the target. The method also involves comparing the sensor data with previously-collected sensor data indicating detection of the target by one or more sensors during one or more previous scans of the environment. The method also involves generating performance metrics related to the sensor of the vehicle based on the comparison.
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公开(公告)号：US20240038208A1
公开(公告)日：2024-02-01
申请号：US18485230
申请日：2023-10-11
Applicant: DENSO CORPORATION
Inventor： Masayoshi SATAKE , Tetsuya AOYAMA , Mitsumasa MIYAZAKI
IPC: G10K9/13 , G01S15/931 , G10K11/00 , G01S7/52
CPC classification number: G10K9/13 , G01S15/931 , G10K11/002 , G01S7/52004 , G01S2015/938 , G01S2007/52007
Abstract: An ultrasonic sensor includes a magnetic substance, a diaphragm, and an electromagnetic transducer. The electromagnetic transducer is disposed opposing the magnetic substance across an outer plate of a vehicle. The diaphragm has the shape of a thin film with a film thickness direction along an axial direction parallel to a directional axis. The diaphragm is able to ultrasonically oscillate by being joined to an outer surface of the outer plate at an outer edge in a radial direction crossing the directional axis. With the outer edge of the diaphragm joined to the outer surface of the outer plate, an internal space that expands and contracts along the axial direction in response to ultrasonic oscillation of the diaphragm is formed between the diaphragm and the outer surface of the outer plate.
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公开(公告)号：US20240013436A1
公开(公告)日：2024-01-11
申请号：US18195408
申请日：2023-05-10
Applicant: MOV. AI Ltd.
Inventor： Lúcia Marília Matos CARREIRA , Jorge Miguel dos Santos Pais RIBEIRO , Joseph APPELBAUM-ELAD , Kfir BLAIER
CPC classification number: G06T7/80 , G01S7/497 , G01S7/52004
Abstract: Systems and methods for calibrating a plurality of sensors attached to a mobile robot include: obtaining, a first set of measurement scans of a calibration target; determining, for each sensor, based on the first set of measurement scans, a pose of the calibration target with respect to each sensor; computing, for each sensor, a first transform from a reference frame of the pose of the calibration target to a reference frame of each sensor; and computing, based on the first transform, a second transform from a reference frame of at least one sensor to a reference frame of a fixed reference point.
