Droplet-based capacitive pressure sensor
    13.
    发明授权
    Droplet-based capacitive pressure sensor 有权
    基于液滴的电容式压力传感器

    公开(公告)号:US09170166B2

    公开(公告)日:2015-10-27

    申请号:US14106760

    申请日:2013-12-14

    CPC classification number: G01L9/0072 G01L9/0075 G01L9/0092 G01L9/0095

    Abstract: A pressure sensing apparatus which utilizes an electrolytic droplet retained between a first and second sensing electrode within a housing. Contact between the electrolyte droplet and the electrodes form electric double layers (EDL) having interfacial EDL capacitance proportional to interface contact area which varies in response to mechanical pressure applied to deform exterior portions of the housing. The electrolyte contains a sufficient percentage of glycerol to prevent evaporative effects. Preferably, the sensing electrodes are modified with depressions, hydrophilic and/or hydrophobic portions to increase central anchoring of the electrolyte droplet within the housing. The inventive pressure sensor provides high sensitivity and resolution which is beneficial to numerous applications, and is particularly well-suited for medical sensing applications.

    Abstract translation: 一种压力感测装置,其利用保持在壳体内的第一和第二感测电极之间的电解液滴。 电解质液滴和电极之间的接触形成具有与界面接触面积成比例的界面EDL电容的电双层(EDL),其响应于施加到壳体的外部部分的机械压力而变化。 电解液含有足够的甘油百分比以防止蒸发效应。 优选地,感测电极用凹陷,亲水和/或疏水部分改性以增加电解质液滴在壳体内的中心锚定。 本发明的压力传感器提供高灵敏度和分辨率,这对许多应用是有益的,并且特别适合于医学感测应用。

    WEARABLE FOOTWEAR SENSOR ARRAYS FOR DETECTION OF CARDIAC EVENTS, BODY MOTION, AND MUSCULAR ACTIONS

    公开(公告)号:US20220346652A1

    公开(公告)日:2022-11-03

    申请号:US17282188

    申请日:2019-04-16

    Abstract: A foot-based wearable system disposed proximate to the dorsalis pedis artery can detect cardiac and muscular activities. Utilizing flexible iontronic sensing (FITS) technology, a sensing array detects both cardiovascular functions, such as heart rate, ECG, and respiration and motion artifact signals with a spatial reference to muscular activities based on the orientation of the array. Individual tendon responses are analyzed and correlated to different pedal gestures, from which multi-channel signals can be used to distinguish different activities. Wearable articles of the invention include a platform to simultaneously analyze both vital signals and body activities from the cardiac waveforms and muscular responses in a natural and unnoticeable fashion. The data-collecting wearable system provides a means to assess personalized health and daily activities on a continuous basis.

    BODY MOTION AND POSITION SENSING, RECOGNITION AND ANALYTICS FROM AN ARRAY OF WEARABLE PRESSURE SENSORS

    公开(公告)号:US20190107887A1

    公开(公告)日:2019-04-11

    申请号:US16155839

    申请日:2018-10-09

    Abstract: Pressure-sensor based arrays are integrated into a control device that detects the position, motion, or movement of a one or more body parts of a user to recognize and translate the motion into a unique user-motion profile. The user motion profile may be independently analyzed or recognized as a discrete motion or gesture and used as input or commands for the control device itself or as a signal or set of signals that yields an output signal to a companion device. The pressure sensors can be attached to any body part of a user, such as the user's wrist or ankle. Motion or position, or changes therein, of the user generates an output signal that may be used to control a companion device. The source of the detectable signal is the pressure-based sensor array that yields a pressure data profile that is translated into an output signal to control the companion device.

    Droplet-based capacitive humidity sensor

    公开(公告)号:US09739679B2

    公开(公告)日:2017-08-22

    申请号:US15272806

    申请日:2016-09-22

    CPC classification number: G01L9/0072 G01L9/0075 G01L9/0092 G01L9/0095

    Abstract: A pressure sensing apparatus which utilizes an electrolytic droplet retained between a first and second sensing electrode within a housing. Contact between the electrolyte droplet and the electrodes form electric double layers (EDL) having interfacial EDL capacitance proportional to interface contact area which varies in response to mechanical pressure applied to deform exterior portions of the housing. The electrolyte contains a sufficient percentage of glycerol to prevent evaporative effects. Preferably, the sensing electrodes are modified with depressions, hydrophilic and/or hydrophobic portions to increase central anchoring of the electrolyte droplet within the housing. The inventive pressure sensor provides high sensitivity and resolution which is beneficial to numerous applications, and is particularly well-suited for medical sensing applications.

    INTEGRATED FLUIDIC FLOW NETWORK FOR FLUID MANAGEMENT
    19.
    发明申请
    INTEGRATED FLUIDIC FLOW NETWORK FOR FLUID MANAGEMENT 审中-公开
    用于流体管理的综合流体流网络

    公开(公告)号:US20170071268A1

    公开(公告)日:2017-03-16

    申请号:US15270080

    申请日:2016-09-20

    Abstract: An apparatus and method is presented for the management of fluid flow utilizing different adjacent wettability regions to form a fluidic network structure on a substrate. The fluidic network structure may include liquid-absorptive fluidic channels, where the fluid can flow within these channels and be removed from the substrate. Fluid can be moved by gravitational force, compression force, capillary force and surface tension force.

    Abstract translation: 提出了一种用于利用不同的相邻润湿性区域来管理流体流动以在基底上形成流体网络结构的装置和方法。 流体网络结构可以包括液体吸收流体通道,其中流体可以在这些通道内流动并从衬底移除。 流体可以通过重力,压缩力,毛细管力和表面张力来移动。

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