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公开(公告)号：US12089991B2
公开(公告)日：2024-09-17
申请号：US17747398
申请日：2022-05-18
申请人： Verasonics, Inc.
CPC分类号： A61B8/44 , G01S7/52017 , G01S7/5202 , G01S7/524 , H02M1/32 , G01S7/5205
摘要： An ultrasound transceiver that overcomes many of the deficiencies of conventional ultrasound transceivers by providing the ability to transmit high power and high frequency arbitrary waveforms with low distortion and with the ability to monitor the transmit signals through the receiver during the transmit period, the transceiver circuit having a transducer element to emit an ultrasound signal and to receive a reflected ultrasound signal, a transformer circuit having a transformer with a secondary winding coupled to the transducer element and a primary winding, an H-Bridge transmit waveform circuit coupled to the primary winding of the transformer to generate a transmit waveform signal to the transducer element via the transformer, an FET clamp coupled to the secondary winding of the transformer, and a receiver circuit having an input coupled to the FET clamp.
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公开(公告)号：US20240103147A1
公开(公告)日：2024-03-28
申请号：US18534469
申请日：2023-12-08
申请人： Rohm Co., Ltd.
发明人： Takahiro Tsuboi
IPC分类号： G01S7/524 , G01S7/527 , G01S15/10 , G01S15/931
CPC分类号： G01S7/524 , G01S7/5273 , G01S15/10 , G01S15/931
摘要： A burst drive signal has a sensor drive period for transmitting a first drive signal, and an interval period provided between the sensor drive periods adjacent to each other, for transmitting a second drive signal. The first drive signal has a frequency within a frequency band of a band pass filter. The second drive signal has a frequency that is different from a resonant frequency of a sensor element and is outside the frequency band of the band pass filter.
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公开(公告)号：US20240094367A1
公开(公告)日：2024-03-21
申请号：US18523183
申请日：2023-11-29
申请人： ROHM CO., LTD.
发明人： Takashi NAGAI , Ken HASHIMOTO
摘要： A drive device includes a power supply circuit that includes a switch element, and a drive circuit that is configured to use a voltage supplied from the power supply circuit as a power supply voltage and that is configured to perform pulse driving of a drive-target element. The power supply circuit is configured to operate such that a switching frequency of the switch element differs from a frequency of the pulse driving.
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公开(公告)号：US20180217244A1
公开(公告)日：2018-08-02
申请号：US15280786
申请日：2016-09-29
CPC分类号： G01S7/524 , G01S7/521 , G01S7/523 , G01S7/60 , G01S7/6263 , G01S7/6272 , G01S7/6281 , G01S7/629 , G01S15/10 , G01S15/42 , G01S15/89 , G01S15/96 , G10K11/341
摘要： A frequency steered sonar element comprises a transducer element and a grating element. The transducer element presents a longitudinal axis and is configured to receive a transmit electronic signal and generate an acoustic wave with a frequency component corresponding to a frequency component of the transmit electronic signal. The grating element presents a longitudinal axis and is oriented such that a longitudinal axis of the grating element and a longitudinal axis of the transducer element form an acute angle. The grating element includes a first surface and an opposing second surface. One or more of the surfaces includes one or more grooves distributed thereon, the one or more grooves including first and second facets. The grating element is configured to emit a sonar beam in an angular direction which varies according to the frequency component of the acoustic wave.
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公开(公告)号：US20180120425A1
公开(公告)日：2018-05-03
申请号：US15856658
申请日：2017-12-28
申请人： DolphiTech AS
发明人： Eskil Skoglund , Arnt-Børre Salberg
CPC分类号： G01S7/523 , G01N29/069 , G01N29/07 , G01N29/226 , G01N2291/044 , G01S7/524 , G01S7/526 , G01S15/02
摘要： An apparatus for imaging structural features below the surface of an object, the apparatus comprising: a transmitter unit configured to transmit a sound pulse at the object; a receiver unit configured to receive reflections of sound pulses transmitted by the transmitter unit from the object; a signal processing unit configured to: analyse one or more signals received by the receiver unit from the object; recognise, in the one or more signals, a reflection that was caused by a first structural feature and a reflection that was caused by a second structural feature that is located, in the object, at least partly behind the first structural feature; and associate each recognised reflection with a relative depth in the object at which the reflection occurred; and an image generation unit configured to generate an image that includes a representation of the first and second structural features in dependence on the recognised reflections and their relative depths.
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公开(公告)号：US20180095059A1
公开(公告)日：2018-04-05
申请号：US15286318
申请日：2016-10-05
IPC分类号： G01N29/032 , G01C5/06 , G01M15/10
CPC分类号： G01N29/032 , G01M15/104 , G01N29/024 , G01N29/343 , G01N29/348 , G01N2291/015 , G01N2291/02845 , G01S7/52004 , G01S7/52006 , G01S7/524 , G01S7/526 , G01S15/025 , G01S15/87 , G01S15/885 , G01S15/931
摘要： Methods and systems are provided for conducting measurements of relative humidity via the use of either an ultrasonic sensor positioned on the vehicle, or via another sensor. In one example, responsive to a request for a relative humidity measurement and an indication of fueled engine operation, the ultrasonic sensor may be utilized, whereas responsive to an indication of non-fueled engine operation, another sensor may be utilized. In this way, robust measurement of relative humidity with desired accuracy may be actively determined, rather than opportunistically, and such measurements of relative humidity may be utilized to adjust vehicle operating parameters, which may improve overall vehicle operation.
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公开(公告)号：US09921057B2
公开(公告)日：2018-03-20
申请号：US14948230
申请日：2015-11-20
发明人： Wancheng Zhou , Liming Huang
CPC分类号： G01B17/00 , G01S7/524 , G01S7/527 , G01S7/5273 , G01S7/529 , G01S15/93 , G01S15/931
摘要： Methods, systems and device are provided for improving the range and accuracy of proximity measurement such as in ultrasonic sensing systems. In particular, the blind zone caused by reverberation signals can be reduced or eliminated by attenuating signals received during the time period corresponding to the blind zone without. In an implementation, an attenuator circuit is selected by a switch to process received signals during the blind zone time period and deselected by the switch after the time zone time period. Additionally, the accuracy and range of the measurement can be improved by varying the gain provided to the received signals based on the varying measuring distance. In an implementation, a gain-adjustable amplifier is controlled by a gain control signal to provide incremental gain as time increases.
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公开(公告)号：US20170350969A1
公开(公告)日：2017-12-07
申请号：US15681564
申请日：2017-08-21
CPC分类号： G01S7/524 , G01S7/52 , G01S7/526 , G01S15/04 , G01S15/87 , H05B33/0815 , H05B33/0827 , H05B37/0227 , Y02B20/346
摘要： A sensor such as a presence sensor for use in a lighting system or other system that adapts to information from a plurality of active presence sensors. If transmissions from the active sensors are uncoordinated, the overall detection performance may be adversely impacted (e.g. due to potential cross-interference), which may make sensing over the detection coverage area defined by a single presence sensor (or the like) become unreliable.The disclosure presents protocols for coordinating transmissions in active sensing systems. The invention may be applied to various active modalities (e.g. ultrasound, RF), for example that find applications in indoor and outdoor lighting controls.
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公开(公告)号：US09823104B2
公开(公告)日：2017-11-21
申请号：US13773447
申请日：2013-02-21
发明人： Francis Rowe , Marc Parent
摘要： Apparatus and methods for velocity scanning in, e.g., bodies of water. In one embodiment, a scanned one-dimensional transducer array Doppler sonar arrangement is used to remotely measure both vertical and horizontal profiles of a river or channel along-stream water velocities within a cross-section of the river/channel from a single side-mounted sonar.
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公开(公告)号：US20170285152A1
公开(公告)日：2017-10-05
申请号：US15087970
申请日：2016-03-31
发明人： Liewei Bao , Kailiang Chen , Tyler S. Ralston , Nevada J. Sanchez
IPC分类号： G01S7/524
CPC分类号： G01S7/524 , G01S7/52034
摘要： Circuitry for ultrasound devices is described. A multi-level pulser is described, which can support time-domain and spatial apodization. The multi-level pulser may be controlled through a software-defined waveform generator. In response to the execution of a computer code, the waveform generator may access master segments from a memory, and generate a stream of packets directed to pulsing circuits. The stream of packets may be serialized. A plurality of decoding circuits may modulate the streams of packets to obtain spatial apodization.
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