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1.发明授权公开(公告)号：US11885874B2
公开(公告)日：2024-01-30
申请号：US16378722
申请日：2019-04-09
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Marek Hustava , Tomas Suchy
CPC classification number: G01S15/10 , G01S7/524 , G01S7/527 , G01S7/52026
Abstract: In one form, an acoustic distance measuring circuit includes a frequency generator, a transmitter amplifier, an acoustic transducer, and a sensing circuit. The sensing circuit includes an input adapted to be coupled to the acoustic transducer, for receiving an input signal. The sensing circuit provides an in-phase portion and a quadrature portion of the input signal to a filter. The sensing circuit filters the in-phase portion and the quadrature portion and calculates a phase of the input signal in response to the filtered in-phase and quadrature portions. The sensing circuit determines a frequency slope of the input signal in response to calculating the phase and provides the frequency slope of the input signal to an output.
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公开(公告)号：US11759822B2
公开(公告)日：2023-09-19
申请号：US16867298
申请日：2020-05-05
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Zdenek Axman , Tomas Suchy , Petr Kamenicky
IPC: B06B1/02
CPC classification number: B06B1/0215 , B06B2201/30 , B06B2201/55
Abstract: Embodiments include a primary short circuit (PSC) coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period. The PSC and the dampening element may be activated substantially simultaneously. Activation of the PSC circuit mitigates a parallel resonance otherwise arising, in part, in the transducer, but, increases the received signal by a DC shift voltage. The dampening element dampens the DC shift voltage. The received signal may be dampened prior to amplification of the received signal by an amplifier. The dampening facilitates earlier and more precise measurement, during the reverberation period, of at least one operating characteristic for the PAS sensor. Another embodiment prevents the DC shift voltage by selectively activating the PSC within a determined time of a zero-crossing of a given signal.
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公开(公告)号：US11163048B2
公开(公告)日：2021-11-02
申请号：US16724783
申请日：2019-12-23
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Tomas Suchy , Jiri Kantor , Marek Hustava
IPC: G01S7/527 , G01S15/931 , G01S15/10 , G01S7/53
Abstract: Various sensors, sensor controllers, and sensor control methods are provided with model-based sideband balancing. In one illustrative embodiment, a controller for a piezoelectric transducer includes a transmitter, a receiver, and a processing circuit coupled to the transmitter and receiver. The processing circuit performs calibration and echo detection, the calibration including: sensing the piezoelectric transducer's phase response as a function of frequency; deriving equivalent circuit parameters for the piezoelectric transducer from the phase response; and determining a sideband imbalance based on one or more of the equivalent circuit parameters. Once the sideband imbalance is identified, the processing circuit may perform echo-detection processing that accounts for the sideband imbalance.
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公开(公告)号：US09810778B2
公开(公告)日：2017-11-07
申请号：US14853307
申请日：2015-09-14
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Ivan Koudar , Tomas Suchy , Marek Hustava
CPC classification number: G01S7/52004 , G01S15/87 , G01S15/931 , G01S2015/932 , G01S2015/938
Abstract: An illustrative sensor controller embodiment includes: a transmitter that drives an ultrasonic transducer to produce a transmit pulse; a receiver that derives a sensor signal from the transducer; and a core logic that detects a trigger signal on an event signaling line and responsively provides one or more error reporting bits on the event signaling line before driving the event signaling line based on the sensor signal. An illustrative embodiment of a sensor control method includes: detecting a trigger signal on an event signaling line; providing at least one status bit on the event signaling line in response to the trigger signal; and after providing the at least one status bit, driving the event signaling line based upon on a sensor signal from a transducer. The transducer may be a piezoelectric element for producing and sensing ultrasonic pulses, particularly for use in parking-assist sensors and systems.
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公开(公告)号：US11520027B2
公开(公告)日：2022-12-06
申请号：US16791085
申请日：2020-02-14
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Tomas Suchy , Marek Hustava
IPC: G01S7/523 , G01S15/931
Abstract: Embodiments include devices, system and processes for facilitating ultra-short range detection of obstacles using a PAS sensor. A process may include obtaining a correlation of at least two characteristics of a transducer; determining a given transmission frequency and selecting a reverberation time desired for the transducer; obtaining a damping ratio corresponding to the selected reverberation time; generating a ranging signal command; generating a damping signal command; and outputting each of the ranging signal command and the damping signal command. The ranging signal command may instruct a PAS sensor to drive the transducer to output a ranging signal at the given transmission frequency, at a transmission amplitude, and at a transmission phase and the damping signal command results in a dampening, at the damping ratio, of transducer reverberations arising from the ranging signal. The damping ratio may be between thirty percent (30%) and eighty percent (80%) of the transmission amplitude.
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Patent Agency Ranking
公开(公告)号：US11405730B2
公开(公告)日：2022-08-02
申请号：US17156742
申请日：2021-01-25
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Tomas Suchy , Pavel Kostelnik , Marek Hustava
Abstract: One implementation of a sensing method includes: correlating a receive signal with a first channel waveform template to obtain a first channel correlation signal in which first channel echoes would be represented as peaks; correlating the receive signal with a second channel waveform template to obtain a second channel correlation signal in which second channel echoes would be represented as peaks; and varying the first channel waveform template and the second channel waveform template based on time elapsed from a measurement start time. A sensor array implementation includes: multiple acoustic transducers that operate concurrently to send acoustic bursts in different frequency channels, each of the multiple acoustic transducers configured to use the foregoing method.
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公开(公告)号：US10756925B2
公开(公告)日：2020-08-25
申请号：US16359693
申请日：2019-03-20
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Marek Hustava , Tomas Suchy , Lukas Vykydal , Pavel Hartl
Abstract: Disclosed DSI3 slave devices may enhance the data rate of the DSI3 bus using modified nibble encoding, pulse shaping, spectral shaping, and/or message preambles to provide chip time and level tracking. In one embodiment, there is provided a communications method that includes: converting a binary data stream into a ternary unipolar non-return-to-zero level channel signal; and driving the channel signal as an electrical current on a signal conductor. The converting uses an encoder that maps binary nibbles to a set of ternary triplets, each triplet in the set having an average level between 2/3 and 4/3 inclusive, and each triplet including at least one internal transition between levels.
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公开(公告)号：US10663568B2
公开(公告)日：2020-05-26
申请号：US15888471
申请日：2018-02-05
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Tomas Suchy , Miroslav Kassa , Marek Hustava
IPC: G01S7/527 , G01S7/53 , G01S15/93 , G01S15/931 , G01S15/10
Abstract: Composite burst signaling to provide robust multi-channel sensor array performance in systems for parking assistance, blind spot monitoring, and driver assistance. An illustrative method embodiment includes driving an acoustic transducer to send composite acoustic bursts. Each composite acoustic burst includes multiple individual bursts associated with respective frequency bands, the frequency band arrangement providing a source-specific burst signature. The method further includes receiving self-generated echo signals responsive to the composite acoustic bursts from the transducer and potentially including extra echoes responsive to acoustic bursts from other sources; categorizing received echo signals by source based on the burst signature; and using the self-generated echoes exclusive of the extra echoes to determine a distance or time of flight from the transducer.
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公开(公告)号：US20140265719A1
公开(公告)日：2014-09-18
申请号：US14179896
申请日：2014-02-13
Applicant: Semiconductor Components Industries, LLC
Inventor： Ivan Koudar , Marek Hustava , Tomas Suchy
IPC: H02N11/00
CPC classification number: G01S7/52004 , B06B1/0215 , G01S7/521
Abstract: In one embodiment, a transducer controller is configured to form an integrated distance measuring and diagnostic cycle that includes measuring a decay time of a transducer and to selectively adjust a period of the transmitted signal responsively to a value of a reverberation period.
Abstract translation: 在一个实施例中，换能器控制器被配置成形成集成的距离测量和诊断循环，其包括测量换能器的衰减时间，并且响应于混响周期的值有选择地调节发射信号的周期。
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公开(公告)号：US11982776B2
公开(公告)日：2024-05-14
申请号：US17522019
申请日：2021-11-09
Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Inventor： Marek Hustava , Jiri Kantor , Tomas Suchy
IPC: G01S7/52 , G01S7/526 , G01S15/931
CPC classification number: G01S7/52006 , G01S7/526 , G01S15/931
Abstract: Disclosed sensors, sensor controllers, and sensor control methods enhance transducer performance using a model-based equalization method that can be performed in the field. One illustrative method for operating a piezoelectric-based sensor includes: sensing a response of a piezoelectric transducer as a function of frequency; deriving parameter values of an equivalent circuit for the piezoelectric transducer from the response; using a squared magnitude of the equivalent circuit's transfer function to determine a system level selectivity; and adapting at least one operating parameter of the sensor based on the system level selectivity. One illustrative controller for a piezoelectric transducer includes: a transmitter that drives the piezoelectric transducer; a receiver that senses a response of the piezoelectric transducer; and a processing circuit coupled to the transmitter and to the receiver to calibrate the transducer using the foregoing method.
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