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    • 10. 发明申请
    • DATA GATHERING SYSTEM
    • 数据收集系统
    • WO2011094606A3
    • 2011-08-04
    • PCT/US2011/023013
    • 2011-01-28
    • PROTEUS BIOMEDICAL, INC.ZDEBLICK, MarkHUTCHISON, JamesARNE, Lawrence
    • ZDEBLICK, MarkHUTCHISON, JamesARNE, Lawrence
    • A61B5/04A61B5/0408H04B13/00G06F19/00
    • A device for gathering data has first and second electrodes. The first electrode is coupled to a surface of interest, and the second electrode is coupled to "everything else" or "the air". The first electrode is shielded from the second, and from most sources of parasitic capacitance, by a shield that is driven by an active driver that drives the shield to track, and ideally to match, the instantaneous potential of the electrode. The second electrode is likewise shielded in a similar way from most sources of parasitic capacitance. These shields likewise help to limit the extent to which RFI from the device electronics couples with either of the electrodes. In this way the sensing device achieves a markedly better signal-to-noise ratio at frequency bands of interest.
    • 用于收集数据的设备具有第一和第二电极。 第一电极耦合到感兴趣的表面,并且第二电极耦合到“其他所有物” 或“空气”。 第一个电极与第二个电极以及大多数寄生电容源隔离,屏蔽由驱动屏蔽层跟踪的有源驱动器驱动,并理想地匹配电极的瞬时电位。 第二个电极的屏蔽方式与绝大多数寄生电容相似。 这些屏蔽同样有助于限制装置电子设备的RFI与任一电极耦合的程度。 通过这种方式,传感设备在感兴趣的频段实现了明显更好的信噪比。