Ultrasonic transducer for use in a fluid medium
    23.
    发明授权
    Ultrasonic transducer for use in a fluid medium 失效
    用于流体介质的超声换能器

    公开(公告)号:US08698378B2

    公开(公告)日:2014-04-15

    申请号:US12998980

    申请日:2009-11-26

    IPC分类号: H01L41/08

    CPC分类号: G10K11/02 G01F1/662 G01F1/667

    摘要: An ultrasonic transducer for use in a fluid medium includes at least one piezoelectric transducer element, at least one matching body for the promotion of a vibrational coupling between the piezoelectric transducer element and the fluid medium, and at least one compensating body situated between the piezoelectric transducer element and the matching body for the reduction of thermal stresses, the compensating body having a coefficient of thermal expansion that is between a coefficient of thermal expansion of the piezoelectric transducer element and a coefficient of thermal expansion of the matching body.

    摘要翻译: 用于流体介质的超声换能器包括至少一个压电换能器元件,至少一个匹配体,用于促进压电换能器元件和流体介质之间的振动耦合,以及位于压电换能器之间的至少一个补偿体 元件和用于减少热应力的匹配体,所述补偿体具有在压电换能器元件的热膨胀系数与匹配体的热膨胀系数之间的热膨胀系数。

    ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM
    25.
    发明申请
    ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM 失效
    超声波传感器用于流体介质

    公开(公告)号:US20120038248A1

    公开(公告)日:2012-02-16

    申请号:US12998980

    申请日:2009-11-26

    IPC分类号: G10K9/122 H04R31/00

    CPC分类号: G10K11/02 G01F1/662 G01F1/667

    摘要: An ultrasonic transducer for use in a fluid medium includes at least one piezoelectric transducer element, at least one matching body for the promotion of a vibrational coupling between the piezoelectric transducer element and the fluid medium, and at least one compensating body situated between the piezoelectric transducer element and the matching body for the reduction of thermal stresses, the compensating body having a coefficient of thermal expansion that is between a coefficient of thermal expansion of the piezoelectric transducer element and a coefficient of thermal expansion of the matching body.

    摘要翻译: 用于流体介质的超声换能器包括至少一个压电换能器元件,至少一个匹配体,用于促进压电换能器元件和流体介质之间的振动耦合,以及位于压电换能器之间的至少一个补偿体 元件和用于减少热应力的匹配体,所述补偿体具有在压电换能器元件的热膨胀系数与匹配体的热膨胀系数之间的热膨胀系数。

    ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM
    26.
    发明申请
    ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM 失效
    超声波传感器用于流体介质

    公开(公告)号:US20110314933A1

    公开(公告)日:2011-12-29

    申请号:US13141963

    申请日:2009-11-17

    IPC分类号: G01F1/66 H01L41/22 H01L41/053

    摘要: An ultrasonic transducer is described for use in a fluid medium. The ultrasonic transducer includes at least one piezoelectric transducer element and at least one matching element for promoting an oscillation injection between the piezoelectric transducer element and the fluid medium. The ultrasonic transducer also includes a housing (112), the piezoelectric transducer element being inserted in the housing. The housing has at least one opening facing the fluid medium, the matching element being inserted at least partially into the opening. The ultrasonic transducer also has at least one sealing element, which seals at least one intervening space between the matching element and the housing in such a way that an inner space of the housing is at least largely sealed from the fluid medium.

    摘要翻译: 描述了用于流体介质中的超声换能器。 超声波换能器包括至少一个压电换能器元件和至少一个匹配元件,用于促进压电换能器元件和流体介质之间的振荡注入。 超声换能器还包括壳体(112),压电换能器元件插入壳体中。 壳体具有面向流体介质的至少一个开口,匹配元件至少部分地插入到开口中。 超声换能器还具有至少一个密封元件,其密封匹配元件和壳体之间的至少一个中间空间,使得壳体的内部空间至少与流体介质密封很大。

    ULTRASONIC SENSOR WITH RECIPROCAL TRANSMITTING AND RECEIVING CIRCUIT
    27.
    发明申请
    ULTRASONIC SENSOR WITH RECIPROCAL TRANSMITTING AND RECEIVING CIRCUIT 有权
    超声波传感器具有接收发射和接收电路

    公开(公告)号:US20090000394A1

    公开(公告)日:2009-01-01

    申请号:US12031925

    申请日:2008-02-15

    IPC分类号: G01F1/66

    CPC分类号: G01F1/667

    摘要: An ultrasonic sensor has at least two ultrasonic converters for transmitting and receiving ultrasonic signals, connected with a transmitting circuit and a receiving circuit. A switching device is provided, by which the ultrasonic converters are connected in series when in the transmission mode, and they are separated from each other when in the receiving mode.

    摘要翻译: 超声波传感器具有至少两个用于发送和接收超声信号的超声波转换器,与发射电路和接收电路连接。 提供了一种开关装置,通过该开关装置,超声波转换器在传送模式下串联连接,并且当处于接收模式时它们彼此分离。

    Method and computer system for operating at least two interconnected control units
    29.
    发明授权
    Method and computer system for operating at least two interconnected control units 有权
    用于操作至少两个相互连接的控制单元的方法和计算机系统

    公开(公告)号:US07725230B2

    公开(公告)日:2010-05-25

    申请号:US10527601

    申请日:2003-09-16

    IPC分类号: G06F17/00

    摘要: A method and a computer system for operating at least two interconnected control units. The control units access sensor data and each execute at least one computer program for controlling operational sequences, in particular in a vehicle. The control units exchange synchronization information with one another. In order to design and refine a computer system in a way that will enable even especially complex operational sequences, as required in a modern motor vehicle, for example, to be controlled and/or regulated simply and cost-effectively with the aid of the computer system, using conventional control units, the control units execute the same computer program time-synchronously using a settable time lag.

    摘要翻译: 一种用于操作至少两个互连的控制单元的方法和计算机系统。 控制单元访问传感器数据,并且每个执行至少一个用于控制操作顺序的计算机程序,特别是在车辆中。 控制单元彼此交换同步信息。 为了设计和改进计算机系统,使得能够根据现代机动车辆所需的特别复杂的操作顺序,例如,借助于计算机来简单和成本有效地控制和/或调节 系统,使用传统的控制单元,控制单元使用可设定的时间滞后时间同步地执行相同的计算机程序。

    Ultrasonic flow meter including turbulators
    30.
    发明授权
    Ultrasonic flow meter including turbulators 失效
    超声波流量计包括湍流器

    公开(公告)号:US07380470B2

    公开(公告)日:2008-06-03

    申请号:US11304906

    申请日:2005-12-14

    IPC分类号: G01F1/66

    CPC分类号: G01F1/662 G01F15/00

    摘要: Measuring volume flows or mass flows in the intake system of motor vehicle internal combustion engines plays an important role in reducing harmful emissions. Therefore, an ultrasonic flow meter for measuring a flow velocity of a fluid flowing in an essentially laminar flow in the main flow direction is described. The ultrasonic flow meter has at least two ultrasonic transducers, the ultrasonic transducers being able to emit and/or receive ultrasonic waves at an angle α to the main flow direction which is different from 90°. Furthermore, the ultrasonic flow meter has at least one turbulator situated upstream from at least one ultrasonic transducer in the main flow direction of the fluid, which generates longitudinal eddies in at least one zone adjacent to the at least one ultrasonic transducer, in particular in a protrusion in a wall of a flow pipe and thus improves the flow of the fluid in this zone in the flow pipe. Wedge-shaped turbulators protruding into the flow of the fluid or flow grooves are provided in particular as turbulators. The ultrasonic flow meter is distinguished, in comparison with devices known from the related art, by improved signal-to-noise ratio and thus by higher measurement accuracy.

    摘要翻译: 测量机动车内燃机进气系统中的体积流量或质量流量对减少有害排放物起着重要的作用。 因此,描述了用于测量在主流动方向上基本上层流中流动的流体的流速的超声波流量计。 超声波流量计具有至少两个超声波换能器,超声换能器能够以不同于90°的主流动方向的角度α发射和/或接收超声波。 此外,超声波流量计具有位于流体主流动方向上的至少一个超声换能器上游的至少一个湍流器,其在与至少一个超声波换能器相邻的至少一个区域中产生纵向涡流,特别是在 突出在流管的壁中,从而改善流管中该区域中的流体的流动。 突出到流体或流动槽的流动中的楔形紊流器尤其被提供为湍流器。 与现有技术中已知的装置相比,超声波流量计的特征在于通过改善的信噪比并由此提高测量精度。