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    • 1. 发明授权
    • Specific material detection and measuring device
    • 具体材料检测和测量装置
    • US4571543A
    • 1986-02-18
    • US479712
    • 1983-03-28
    • Leonard S. RaymondWarren R. Jewett
    • Leonard S. RaymondWarren R. Jewett
    • G01N27/22G01N27/40
    • G01N27/227G01N2410/10Y10T436/255
    • A device for sensing the presence of and measuring the concentration of a specific non-aqueous particle or gas material in an environment, the device comprising an interdigitated capacitor having at least a pair of selected covering layers thereupon, said pair of layers comprising a first passive electrically insulative layer and a second material layer having a spacial relationship to said first layer, said second layer selectively permeable to the specific material to be sensed and measured; said second coating, when juxtaposed said first coating, selectively permitting permeability of the particular material sought to be sensed and measured, and when spaced apart, permitting passage through of the specific material in order that the material may migrate to the proximity of the first coating and thereby be sensed and measured. The presence of the specific material modifies the dielectric constant of the dielectric in the interdigitated capacitor electric field and thus the capacitor's capacitance, whereupon the interdigitated capacitor's capacitance is compared with a proximate temperature sensing interdigitated capacitor in a capacitance sensing circuit and by the change of the capacitance, the presence and concentration of the specific material determined.
    • 一种用于感测在环境中存在和测量特定非水性颗粒或气体材料的浓度的装置,该装置包括具有至少一对选定的覆盖层的交错电容器,所述一对层包括第一被动 电绝缘层和与所述第一层具有空间关系的第二材料层,所述第二层选择性地渗透待被感测和测量的特定材料; 所述第二涂层当并置所述第一涂层时,选择性地允许寻求被检测和测量的特定材料的渗透性,并且当间隔开时允许特定材料通过,以使得材料可迁移到第一涂层附近 从而被感测和测量。 特定材料的存在改变了交叉电容器电场中的电介质的介电常数,从而改变了电容器的电容,由此将交错电容器的电容与电容感测电路中的接近温度感测交叉电容器进行比较, 电容,确定特定材料的存在和浓度。
    • 5. 发明授权
    • Solid state microanemometer device and method of fabrication
    • 固体微量计仪器及其制造方法
    • US07500392B1
    • 2009-03-10
    • US11870612
    • 2007-10-11
    • Thomas E. PlowmanWarren R. Jewett
    • Thomas E. PlowmanWarren R. Jewett
    • G01F1/68G01P5/06
    • G01F1/6845G01F1/688G01F1/692
    • The invention is a solid state microanemometer and a method of making thereof. Specifically, the invention relates to a microanemometer including an electrically conductive resistor in the form of a semiconductor wafer doped with an impurity having an upper surface, a lower surface having a peripheral edge; a substrate bonded to the semiconductor wafer having an upper surface, a cavity having a peripheral edge and a peripheral margin defined on the upper surface and bounded by the peripheral edge of the cavity wherein the lower surface of the semiconductor wafer rests on and is supported by at least part of the peripheral edge of the cavity such that the semiconductor wafer is over the cavity; and a means for electrically connecting the resistor to a current source. The microanemometer also includes a plurality of metal conductors in contact with the resistor. The semiconductor wafer has sloped sidewalls and the metal conductors are placed on sloped sidewalls of the wafer to effectively increase available active area of the resistor.
    • 本发明是一种固体微量纲计及其制造方法。 具体地说,本发明涉及一种微量度计,它包括一种掺杂有上表面的杂质的半导体晶片形式的导电电阻器,一个具有周缘的下表面; 键合到具有上表面的半导体晶片的衬底,具有外周边缘的空腔和限定在所述上表面上且由所述腔的周边边界限定的周边边缘,其中所述半导体晶片的下表面位于并由所述外周边 所述腔的至少一部分周边边缘使得所述半导体晶片在所述空腔之上; 以及用于将电阻器电连接到电流源的装置。 微量计还包括与电阻器接触的多个金属导体。 半导体晶片具有倾斜的侧壁,并且金属导体被放置在晶片的倾斜侧壁上,以有效地增加电阻器的可用有效面积。
    • 10. 发明授权
    • Blood pressure measuring device
    • 血压测量装置
    • US4290434A
    • 1981-09-22
    • US905795
    • 1978-05-15
    • Warren R. Jewett
    • Warren R. Jewett
    • A61B5/022A61B5/02
    • A61B5/02208Y10T24/1459
    • A noninvasive blood pressure measuring device includes display means which may be digital readouts, a sphygmomanometer or other similar means, a compression cuff, a first flexible tube, a second flexible tube, an air leak valve and monitoring, control and display circuitry. Within the compression cuff is an inflatable bladder which extends in a longitudinal direction for substantially the entire length of the compression cuff. The monitoring, control and display circuitry includes a piezoelectric crystal assembly which provides electrical signals in response to air pressure levels and changes within the first flexible tube. The first tube connects this piezoelectric crystal assembly with the compression cuff and the second tube has a hand pump at one end for inflating the bladder. The air leak valve is in line with the first tube and the air leak valve has a continuously open air escape aperture of a size which corresponds to a predetermined leak rate proportional to the pressure in the bladder. When a sphygmomanometer is incorporated as part of the display means, a branch tube connects the first flexible tube to the sphygmomanometer and a pair of light-emitting diodes mounted to the dial face of the sphygmomanometer indicate when sphygmomanometer readings should be taken for systolic and diastolic conditions. When digital readouts and a microprocessor are used as part of the monitoring, control and display circuitry, data such as, for example, heart rate and mean pressure in addition to systolic and diastolic pressures are automatically presented and may be read directly.
    • 无创血压测量装置包括可以是数字读出的显示装置,血压计或其他类似装置,压缩袖带,第一柔性管,第二柔性管,泄漏阀和监视,控制和显示电路。 在压缩套囊内部是可膨胀囊,其在纵向方向上延伸大致整个压缩袖带的长度。 监测,控制和显示电路包括压电晶体组件,其响应于空气压力水平和第一柔性管内的变化而提供电信号。 第一管将压电晶体组件与压缩箍连接,第二管在一端具有用于充气膀胱的手泵。 泄漏阀与第一管一致,并且泄漏阀具有连续敞开的空气排出孔,其尺寸对应于与囊中的压力成比例的预定泄漏率。 当作为显示装置的一部分并入血压计时,分支管将第一柔性管连接到血压计,并且安装在血压计的表盘表面上的一对发光二极管指示当血压计读数应用于收缩和舒张时 条件。 当数字读数和微处理器被用作监视,控制和显示电路的一部分时,除了收缩压和舒张压之外的数据例如心率和平均压力也被自动呈现,并且可以直接读取。