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    MINIATURE ULTRASONIC TRANSDUCER PACKAGE
    2.
    发明申请
    MINIATURE ULTRASONIC TRANSDUCER PACKAGE 审中-公开
    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

    Applicant: CHIRP MICROSYSTEMS, INC.

    Inventor： SHELTON, Stefon ,  GUEDES, Andre ,  HORSLEY, David

    IPC: B06B1/06

    CPC classification number: G10K9/22 ,  G10K9/122

    Abstract: 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.

    Abstract translation: 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

    PIEZOELECTRIC MICROMACHINED ULTRASONIC TRANSDUCERS HAVING STRESS RELIEF FEATURES
    4.
    发明申请
    PIEZOELECTRIC MICROMACHINED ULTRASONIC TRANSDUCERS HAVING STRESS RELIEF FEATURES 审中-公开
    具有应力消除特性的压电微机械超声换能器

    公开(公告)号：WO2017218299A1

    公开(公告)日：2017-12-21

    申请号：PCT/US2017/036613

    申请日：2017-06-08

    Applicant: CHIRP MICROSYSTEMS, INC.

    Inventor： HORSLEY, David ,  GUEDES, Andre ,  SHELTON, Stefon ,  PRZYBYLA, Richard

    IPC: G10K9/122 ,  B06B1/06

    Abstract: A piezoelectric micromachined ultrasound transducer (PMUT) is disclosed. The device consists of a flexible membrane that is connected to a rigid substrate via flexures. The flexures are defined by slots etched through the perimeter of the membrane. These features release the stress present on the structural layers of the membrane, making it less sensitive to residual stress. The flexures are designed to act as torsion springs so that the membrane's vibration mode shape is highly curved in the piezoelectric actuation area, thereby increasing the electromechanical coupling.

    Abstract translation: 公开了压电微机械超声换能器（PMUT）。 该设备由一个柔性膜组成，通过弯曲连接到一个刚性基板。 挠曲部分由蚀刻穿过膜周边的狭缝限定。 这些特征释放了膜结构层上存在的应力，使其对残余应力不太敏感。 挠曲件被设计成用作扭转弹簧，使得膜片的振动模式形状在压电致动区域中高度弯曲，从而增加机电耦合。

    DIFFERENTIAL ENDFIRE ARRAY ULTRASONIC RANGEFINDER
    5.
    发明申请
    DIFFERENTIAL ENDFIRE ARRAY ULTRASONIC RANGEFINDER 审中-公开
    差异性端基阵列超声波范围

    公开(公告)号：WO2016106154A1

    公开(公告)日：2016-06-30

    申请号：PCT/US2015/066910

    申请日：2015-12-18

    Applicant: CHIRP MICROSYSTEMS, INC.

    Inventor： HORSLEY, David ,  GUEDES, Andre ,  KIANG, Meng-Hsiung ,  PRZBYLA, Richard ,  SHELTON, Stefon

    IPC: H04S7/00

    CPC classification number: G01S15/10 ,  G01S7/523

    Abstract: An ultrasonic time of flight range sensor is based on an array of two or more ultrasound transducers that are arranged as an endfire phased array. The acoustic beam profile of the array can be shaped using two degrees of freedom: the distance between the transducers of the array and the electronic delay applied to the transducers' outputs. This allows the array to have a more directional response, so that objects in a desired direction can be detected while objects in other directions are ignored. Differential measurements are used to reduce or cancel the ring-down signal that follows transmission. This ring-down cancellation is important in micromachined ultrasonic transducers that typically have narrow bandwidth and therefore poor pulse response. The differential endfire array can be used for ultrasonic rangefinding and object detection in consumer electronics devices such as smart phones, tablets, personal computers, monitors, and display devices.

    Abstract translation: 飞行距离传感器的超声时间基于被布置为端火相控阵列的两个或更多个超声换能器的阵列。 可以使用两个自由度来形成阵列的声束轮廓：阵列的换能器之间的距离和施加到换能器输出的电子延迟。 这允许阵列具有更多的定向响应，使得可以检测到在其他方向上的对象被忽略的期望方向上的对象。 差分测量用于减少或取消传输后的减振信号。 这种减振取消对于通常具有窄带宽并因此差的脉冲响应的微机械超声波换能器是重要的。 差分端火阵列可用于诸如智能电话，平板电脑，个人计算机，监视器和显示设备的消费电子设备中的超声波测距和物体检测。

    PROGRAMMABLE ULTRASONIC TRANSCEIVER
    6.
    发明申请
    PROGRAMMABLE ULTRASONIC TRANSCEIVER 审中-公开
    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

    Applicant: CHIRP MICROSYSTEMS, INC.

    Inventor： PRZBYLA, Richard J. ,  KLINE, Mitchell ,  HORSLEY, David

    IPC: G01N29/34

    CPC classification number: G01S7/523 ,  B06B1/0207 ,  H04W12/02

    Abstract: 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.

    Abstract translation: 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。

    QUADRATURE AMPLITUDE MODULATION CIRCUITRY FOR ULTRASONIC TRANSDUCER
    9.
    发明申请
    QUADRATURE AMPLITUDE MODULATION CIRCUITRY FOR ULTRASONIC TRANSDUCER 审中-公开
    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

    Applicant: CHIRP MICROSYSTEMS, INC.

    Inventor： KLINE, Mitchell ,  PRZYBYLA, Richard J. ,  HORSLEY, David

    IPC: G01S7/491

    CPC classification number: G01S7/524 ,  B06B1/0215 ,  G01S7/521 ,  G01S15/102 ,  G01S15/325

    Abstract: 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.

    Abstract translation: 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。

    MINIATURE ULTRASONIC TRANSDUCER PACKAGE
    10.
    发明公开
    MINIATURE ULTRASONIC TRANSDUCER PACKAGE 审中-公开

    公开(公告)号：EP3383556A1

    公开(公告)日：2018-10-10

    申请号：EP15909912.6

    申请日：2015-12-01

    Applicant: Chirp Microsystems, Inc.

    Inventor： SHELTON, Stefon ,  GUEDES, Andre ,  HORSLEY, David

    IPC: B06B1/06

    CPC classification number: G10K9/22 ,  G10K9/122

    Abstract: 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.

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