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    • 35. 发明授权
    • Microelectromechanical-based power meter
    • 微机电功率计
    • US5617020A
    • 1997-04-01
    • US487292
    • 1995-06-07
    • Gregory A. CampbellRichard M. White
    • Gregory A. CampbellRichard M. White
    • G01R15/16G01R21/06G01R21/133G01R11/32
    • G01R21/133G01R15/165G01R21/06
    • A self-excited microelectromechanical device is described. The device includes a resonating structure, such as a cantilever, which responds to a physical phenomenon by generating an induced variable frequency voltage signal corresponding to the physical phenomenon. Self-excitation circuitry connected to the cantilever processes the induced variable frequency voltage signal and produces a variable frequency voltage signal in a resonant pass band of interest that is applied to the cantilever to augment the effect of the physical phenomenon on the cantilever. An exemplary use of the device is as a power meter. In this context, the cantilever responds to the electric field associated with a power signal on a metered line. The cantilever transforms the voltage signal of the electric field into a corresponding frequency signal. The noise-immune frequency signal can be readily processed to reconstruct the power signals carried by the power line.
    • 描述了一种自激式微机电装置。 该装置包括诸如悬臂的谐振结构,其通过产生对应于物理现象的感应可变频率电压信号来响应物理现象。 连接到悬臂的自激电路处理感应的可变频率电压信号,并在感兴趣的谐振通带中产生可变频率电压信号,该信号被施加到悬臂上以增加悬臂上的物理现象的影响。 该装置的示例性用途是作为功率计。 在这种情况下,悬臂响应与计量线上的功率信号相关联的电场。 悬臂将电场的电压信号转换成相应的频率信号。 可以容易地对噪声免疫频率信号进行处理以重建由电力线承载的功率信号。
    • 38. 发明授权
    • Method and apparatus for using ultrasonic energy for moving
microminiature elements
    • 使用超声能量移动微型元件的方法和装置
    • US5006749A
    • 1991-04-09
    • US416532
    • 1989-10-03
    • Richard M. White
    • Richard M. White
    • B01L3/00B81B3/00H01L41/09
    • H02N2/028B01L3/502792H02N2/08H02N2/16B01L2400/0439B01L2400/0496
    • A micromotor device for moving a micro-miniature element along a predetermined path comprises a membrane supported on a substrate having an upper planar surface for supporting the element to be moved and a lower surface. An ultrasonic transducer attached to one membrane surface is supplied with electrical power to produce ultrasonic energy and thereby cause a flexural wave action in the membrane. The membrane may be comprised of a layer of piezoelectric material in one embodiment or an electrically insulating amorphous material which utilizes an electrostriction phenomenon in another embodiment. The generated flexural wave action produces linear movement of one or more microelements on a membrane for a variety of applications. Control of the moving elements may be maintained using a linear position sensor which includes a circuit for producing feedback control signals.
    • 用于沿着预定路径移动微型微型元件的微电机装置包括支撑在具有用于支撑待移动元件的上平面的基板上的膜和下表面。 连接到一个膜表面的超声波换能器被供给电力以产生超声能量,从而在膜中引起弯曲波动作用。 在一个实施例中,膜可以由一层压电材料构成,或者在另一个实施例中使用电致伸缩现象的电绝缘非晶材料。 所产生的弯曲波作用产生一种或多种微量元素在膜上的线性运动,用于各种应用。 可以使用包括用于产生反馈控制信号的电路的线性位置传感器来维持运动元件的控制。
    • 39. 发明授权
    • Solar power system and high efficiency photovoltaic cells used therein
    • 太阳能发电系统及其中使用的高效光伏电池
    • US4200472A
    • 1980-04-29
    • US912724
    • 1978-06-05
    • Terry I. ChappellRichard M. White
    • Terry I. ChappellRichard M. White
    • H01L27/142H01L31/042H01L31/052H01L31/06
    • H01L31/052H01L31/047H01L31/0547Y02E10/52
    • A solar power system including a movable platform for tracking the sun, a radiation concentrator, and a plurality of photovoltaic cell modules positioned on the platform for receiving concentrated solar radiation. The module includes a heat dissipation housing which supports a silicon cell across an open end of the housing. A heat transfer block physically engages the silicon cell and a metallic sponge and wick is attached to the heat transfer block and depends therefrom into the housing. The housing is partially filled with liquid to facilitate heat removal. The silicon cells are processed by preferential etching to form V grooves which define a plurality of diode elements having generally trapezoidal cross-sections. The elements may be serially interconnected by metallization on the V groove surfaces. The physical configurations of the elements and the use of antireflective coatings on surfaces of the elements result in high efficiency cells.
    • 包括用于跟踪太阳的可移动平台的太阳能发电系统,辐射集中器和位于平台上用于接收集中的太阳辐射的多个光伏电池模块。 该模块包括散热壳体,该壳体在壳体的开口端部支撑硅电池。 传热块物理地接合硅电池,并且金属海绵和灯芯附接到传热块并且从而进入壳体。 壳体部分地装有液体以便于除热。 通过优先蚀刻处理硅电池以形成限定多个具有大致梯形横截面的二极管元件的V沟槽。 这些元件可以通过V槽表面上的金属化来串联。 元件的物理结构和在元件表面上使用抗反射涂层导致高效率的电池。