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1. 发明申请

WO2022216968A1 SURFACE TYPE DETECTION 审中-公开
公开(公告)号：WO2022216968A1
公开(公告)日：2022-10-13
申请号：PCT/US2022/023888
申请日：2022-04-07
申请人： CHIRP MICROSYSTEMS, INC.
发明人： KLINE, Mitchell H. , YOUSSEF, Joe
IPC分类号： A47L9/28
摘要： A robotic cleaning appliance includes a sonic transducer and a processor coupled with a housing. The sonic transducer transmits sonic signals toward a surface within its ringdown distance and receives corresponding returned signals. Following cessation of the sonic signals, the processor samples the ringdown signal generated by the sonic transducer during an early portion before the corresponding returned signals have reflected back to the sonic transducer, and during a later portion which includes the corresponding returned signals. The processor utilizes the sampled early portion to estimate a void ringdown signal of which represents performance of the sonic transducer in absence of returned signals being received. The processor compares the estimated void ringdown signal to the later portion of the ringdown signal and generates a metric based on the comparison. The processor utilizes the metric to determine a type of the surface, out of a plurality of surface types.

2. 发明申请

WO2016106153A1 PIEZOELECTRIC MICROMACHINED ULTRASONIC TRANSDUCERS WITH LOW STRESS SENSITIVITY AND METHODS OF FABRICATION 审中-公开
标题翻译：具有低应力灵敏度的压电微型超声波传感器和制造方法
公开(公告)号：WO2016106153A1
公开(公告)日：2016-06-30
申请号：PCT/US2015/066906
申请日：2015-12-18
申请人： CHIRP MICROSYSTEMS, INC.
发明人： GUEDES, Andre , PRZYBYLA, Richard , SHELTON, Stefon , KIANG, Meng-Hsiung , HORSLEY, David
IPC分类号： B06B1/06 , A61B8/00 , G01N29/24
CPC分类号： G01N29/2437 , B06B1/0651 , G01N2291/0427 , G10K13/00
摘要： A piezoelectric micromachined ultrasonic transducer (pMUT) device may include a piezoelectric membrane transducer designed to have lower sensitivity to residual stress and reduced sensitivity to geometric variations arising from the backside etching process used to release the membrane. These designs allow some of its key feature to be adjusted to achieve desired characteristics, such as pressure sensitivity, natural frequency, stress sensitivity, and bandwidth.
摘要翻译：压电微加工超声波换能器（pMUT）装置可以包括压电膜换能器，其被设计为对残留应力具有较低的灵敏度，并降低由用于释放膜的背面蚀刻工艺引起的对几何变化的敏感性。这些设计允许调整其一些关键特征，以实现所需的特性，如压力灵敏度，固有频率，应力灵敏度和带宽。

3. 发明申请

WO2022212592A1 ULTRASONIC LIQUID LEVEL SENSING 审中-公开
公开(公告)号：WO2022212592A1
公开(公告)日：2022-10-06
申请号：PCT/US2022/022666
申请日：2022-03-30
申请人： CHIRP MICROSYSTEMS, INC.
发明人： YANG, Cristabel , PRZYBYLA, Richard J. , KLINE, Mitchell
IPC分类号： G01F23/2962 , G01F23/2965 , A47J31/00 , B67D1/00 , B67D3/00 , G01F23/284 , G01F23/292 , G07F13/10 , B67D1/12 , G07F9/02 , G07F13/06 , G07F13/02 , A47J31/4482 , B67D1/1238 , G07F13/025
摘要： Systems and methods for ultrasonic liquid level sensing. A circuit causes an ultrasonic transducer to transmit a sequence of ultrasonic pulses and receive a sequence of reflected signals. Each reflected signal includes at least one first reflection associated with at least one non-moveable surface and at least one second reflection associated with a moveable surface. A digital controller, for each reflected signal: determines at least one of a magnitude and a variance of the respective signal to form at least one output signal, identifies, in the at least one output signal, at least one first pulse indicative of the at least one non-moveable surface and at least one second pulse indicative of the moveable surface, and determines a distance of the moveable surface relative to the at least one non-moveable surface based on the identified first and second pulses.

4. 发明申请

WO2017095396A1 MINIATURE ULTRASONIC TRANSDUCER PACKAGE 审中-公开
标题翻译：微型超声波传感器套件
公开(公告)号：WO2017095396A1
公开(公告)日：2017-06-08
申请号：PCT/US2015/063242
申请日：2015-12-01
申请人： CHIRP MICROSYSTEMS, INC.
发明人： SHELTON, Stefon , GUEDES, Andre , HORSLEY, David
IPC分类号： B06B1/06
CPC分类号： G10K9/22 , G10K9/122
摘要： A package design for a micromachined ultrasound transducer (MUT) utilizing curved geometry to control the presence and frequency of acoustic resonant modes is described. The approach consists of reducing in number and curving the reflecting surfaces present in the package cavity to adjust the acoustic resonant frequencies to locations outside the band of interest. The design includes a cavity characterized by a curved geometry and a MUT mounted to a side of a substrate facing the cavity with a sound emitting portion of the MUT facing an opening in the substrate. The substrate is disposed over an opening of the cavity with the substrate oriented such that the MUT located within the cavity.
摘要翻译：描述了用于利用弯曲几何形状来控制声学谐振模式的存在和频率的微机械超声换能器（MUT）的封装设计。该方法包括减少数量并弯曲封装腔中存在的反射表面，以将声共振频率调节到感兴趣带外的位置。该设计包括以弯曲几何形状为特征的腔体和安装到面对腔体的基板的一侧上的MUT，其中MUT的发声部分面向基板中的开口。衬底布置在空腔的开口上方，衬底被定向为使得位于空腔内的MUT

5. 发明申请

WO2017070389A1 EFFICIENT ON-CHIP HIGH-VOLTAGE DRIVER CIRCUIT FOR ULTRASONIC TRANSDUCER 审中-公开
标题翻译：用于超声换能器的高效率片上高压驱动器电路
公开(公告)号：WO2017070389A1
公开(公告)日：2017-04-27
申请号：PCT/US2016/057972
申请日：2016-10-20
申请人： CHIRP MICROSYSTEMS, INC.
发明人： KLINE, Mitchell , PRZYBYLA, Richard J. , HORSLEY, David
IPC分类号： B06B1/02 , H02M3/07
CPC分类号： H02M3/07 , B06B1/0207 , H02M7/483 , H02M2001/0048 , H02M2001/007 , Y02B70/1491
摘要： An ultrasound transducer may be driven by a driver circuit having one or more charge pumps and a multi-level inverter. The one or more charge pumps are configured to drive the ultrasound transducer only during output transitions of the inverter.
摘要翻译：超声换能器可以由具有一个或多个电荷泵和多电平逆变器的驱动器电路来驱动。一个或多个电荷泵被配置为仅在逆变器的输出转换期间驱动超声波换能器。

6. 发明申请

WO2021252268A1 ULTRASONIC RANGE SENSING ENABLES MEASURED SOCIAL CONTACT 审中-公开
公开(公告)号：WO2021252268A1
公开(公告)日：2021-12-16
申请号：PCT/US2021/035755
申请日：2021-06-03
申请人： CHIRP MICROSYSTEMS, INC.
发明人： PRZYBYLA, Richard , RICCARDI, Sebastien , LACHAL, Benoît
IPC分类号： G01S7/00 , G01S1/72 , G01S15/74
摘要： A method, system and computer readable medium for Ultrasound contact tracing comprising receiving one or more advertise messages determining a base station from the one or more advertise messages wherein the base station generates a broadcast order from at least the one or more advertise messages. A broadcast order is determined and an ultrasound message is sent according to the broadcast order. A detection period for ultrasound messages is initiated according to the broadcast order and a user may be notified of a detected ultrasound message.

7. 发明申请

WO2019099013A1 PIEZOELECTRIC MICROMACHINED ULTRASONIC TRANSDUCER WITH A PATTERNED MEMBRANE STRUCTURE 审中-公开
公开(公告)号：WO2019099013A1
公开(公告)日：2019-05-23
申请号：PCT/US2017/062059
申请日：2017-11-16
申请人： CHIRP MICROSYSTEMS, INC.
发明人： GUEDES, Andre , GOERICKE, Fabian , SHELTON, Stefon , COSTELLO, Benedict , HORSLEY, David
IPC分类号： B06B1/06 , H01L41/08 , H01L41/083 , H01L41/09
CPC分类号： H01L41/0973 , B06B1/0607 , H01L41/318 , H01L41/332
摘要： A piezoelectric micromachined ultrasonic transducer (PMUT) device includes a substrate having an opening therethrough and a membrane attached to the substrate over the opening. An actuating structure layer on a surface of the membrane includes a piezoelectric layer sandwiched between the membrane and an upper electrode layer. The actuating structure layer is patterned to selectively remove portions of the actuating structure from portions of the membrane to form a central portion proximate a center of the open cavity and three or more rib portions projecting radially outward from the central portion.

8. 发明申请

WO2017070386A1 QUADRATURE AMPLITUDE MODULATION CIRCUITRY FOR ULTRASONIC TRANSDUCER 审中-公开
标题翻译：超声波换能器的正交幅度调制电路
公开(公告)号：WO2017070386A1
公开(公告)日：2017-04-27
申请号：PCT/US2016/057969
申请日：2016-10-20
申请人： CHIRP MICROSYSTEMS, INC.
发明人： KLINE, Mitchell , PRZYBYLA, Richard J. , HORSLEY, David
IPC分类号： G01S7/491
CPC分类号： G01S7/524 , B06B1/0215 , G01S7/521 , G01S15/102 , G01S15/325
摘要： An ultrasonic transmitter system includes a digital controller, bandpass pulse-width modulator (BP-PWM) unit, a digital to analog converter (DAC), and an ultrasound transducer. The controller generates pulse width and phase reference signals. The BP-PWM configured receives these signals generates a pulse width modulation (PWM) output characterized by a pulse width and a phase based on the pulse width and phase reference signals. The DAC) receives the PWM output from the BP-PWM unit and generates an output characterized by the pulse width and phase. The ultrasonic transducer receives the output from the DAC and generates an output sound pressure in response to the output from the DAC. An amplitude of the RMS sound pressure depends on the pulse width of the output from the DAC.
摘要翻译：超声发射器系统包括数字控制器，带通脉宽调制器（BP-PWM）单元，数模转换器（DAC）和超声换能器。控制器产生脉冲宽度和相位参考信号。配置的BP-PWM接收这些信号，基于脉冲宽度和相位参考信号生成以脉冲宽度和相位为特征的脉宽调制（PWM）输出。 DAC）接收来自BP-PWM单元的PWM输出并产生一个由脉宽和相位表征的输出。超声波换能器接收来自DAC的输出，并响应DAC的输出产生输出声压。 RMS声压的幅度取决于DAC输出的脉冲宽度。

9. 发明申请

WO2018098083A1 THREE DIMENSIONAL OBJECT-LOCALIZATION AND TRACKING USING ULTRASONIC PULSES 审中-公开
公开(公告)号：WO2018098083A1
公开(公告)日：2018-05-31
申请号：PCT/US2017/062624
申请日：2017-11-20
申请人： CHIRP MICROSYSTEMS, INC.
发明人： PRZYBYLA, Richard, J. , HORSLEY, David, A. , KLINE, Mitchell, H.
IPC分类号： H04R1/20 , H04R1/40 , G01S3/808
摘要： A tracking method is disclosed. The method may include displaying visual content on a screen. A base station may be stationary with respect to the screen while the visual content is being displayed. In contrast, one or more objects may move with respect to the screen while the visual content is being displayed. The one or more objects may be tracked so that the movement thereof may be used to alter the visual content. Such tracking may involve the base station and the one or more objects sending and/or receiving one or more ultrasonic pulses. Time-difference-of-arrival and/or time-of-flight of the one or more ultrasonic pulses may then be used to estimate a relative location and/or a relative orientation of the one or more objects with respect to the base station in three dimensional space.

10. 发明申请

WO2017049078A1 PROGRAMMABLE ULTRASONIC TRANSCEIVER 审中-公开
标题翻译：可编程超声波收发器
公开(公告)号：WO2017049078A1
公开(公告)日：2017-03-23
申请号：PCT/US2016/052124
申请日：2016-09-16
申请人： CHIRP MICROSYSTEMS, INC.
发明人： PRZBYLA, Richard J. , KLINE, Mitchell , HORSLEY, David
IPC分类号： G01N29/34
CPC分类号： G01S7/523 , B06B1/0207 , H04W12/02
摘要： An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.
摘要翻译：超声波收发器系统包括发射器块，接收器块，状态机，计算机单元。发射机块包含配置成驱动超声波换能器的电路。接收器块包含被配置为从超声换能器接收信号并将信号转换成数字数据的电路。状态机耦合到发射器和接收器块，并且包含被配置为用作这些块的控制器的电路。计算单元耦合到发射机模块，接收机模块和状态机，并被配置为通过执行程序的指令来驱动发射机模块并处理从接收机模块接收到的数据。程序存储器耦合到计算单元并且被配置为存储程序。计算单元被配置为用存储在程序存储器中的一个或多个附加程序重新编程。

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