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    • 1. 发明授权
    • Adjustable resonance frequency vibration power harvester
    • 可调共振频振动收割机
    • US07812466B2
    • 2010-10-12
    • US12012900
    • 2008-02-06
    • Liang-Ju LuRobert Hedtke
    • Liang-Ju LuRobert Hedtke
    • H01L41/113
    • H02N2/188
    • A resonance frequency vibration power harvester includes an elongate body, a first vibration energy harvester device and a weight. The elongate body includes a first end, a second end and an interior channel extending through at least a portion of the elongate body between the first end and the second end. The second end of the elongate body is for connecting to a vibration source such that the first end is cantilevered. The first vibration energy harvester device is attached adjacent the first end of the elongate body, and the weight is joined to the interior channel to adjust a resonant frequency of the elongate body.
    • 谐振频率振动动力收割机包括细长体,第一振动能量收集器装置和重物。 细长主体包括在第一端和第二端之间延伸穿过细长主体的至少一部分的第一端,第二端和内部通道。 细长体的第二端用于连接到振动源,使得第一端是悬臂的。 第一振动能量收集器装置附接在细长主体的第一端附近,并且重物连接到内部通道以调节细长主体的共振频率。
    • 7. 发明授权
    • Redundant mechanical and electronic remote seal system
    • 冗余机电遥控密封系统
    • US07412893B2
    • 2008-08-19
    • US11387550
    • 2006-03-23
    • Robert Hedtke
    • Robert Hedtke
    • G01L7/02
    • G01L15/00G01L19/0007
    • A redundant pressure transmitter for redundantly measuring pressure of a process fluid comprises a transmitter housing, transmitter circuitry, a remote seal assembly including a first pressure sensor, and a second pressure sensor positioned in the transmitter housing. The remote seal assembly also comprises a remote seal flange, a communication system and a capillary tube. The remote seal flange communicates with the process fluid and the first pressure sensor senses the process fluid pressure at the remote seal flange. The communication system relays output of the first pressure sensor to the transmitter circuitry, and the capillary tube communicates the process fluid pressure to the transmitter housing via a fill fluid, where the second pressure sensor senses the pressure of the process fluid through the fill fluid.
    • 用于冗余地测量过程流体压力的冗余压力变送器包括变送器壳体,变送器电路,包括第一压力传感器的远程密封组件和位于变送器壳体中的第二压力传感器。 远程密封组件还包括远程密封凸缘,通信系统和毛细管。 远程密封凸缘与过程流体连通,第一压力传感器感测远程密封凸缘处的过程流体压力。 通信系统将第一压力传感器的输出中继到发射器电路,并且毛细管经由填充流体将过程流体压力传递到变送器壳体,其中第二压力传感器感测通过填充流体的过程流体的压力。