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公开(公告)号：US20210145304A1
公开(公告)日：2021-05-20
申请号：US16605259
申请日：2018-04-08
发明人： Ashoka Sathanur VISWESWARA , Pippinus Maarten Robertus WORTELBOER , Mohammed MEFTAH , Mark Thomas JOHNSON
摘要： A system is provided for determining the position of an implanted device (10) in a human or animal body relative to a probe (12). In one device, a reference signal is generated and it is received in the other device. A phase angle or an amplitude attenuation or difference between the reference signal and the received signal is used to determine the proximity the probe to the implanted device. The approach makes use of body channel sensing by which the frequencies at which the body behaves as a waveguide are employed.
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公开(公告)号：US20220331078A1
公开(公告)日：2022-10-20
申请号：US17640124
申请日：2020-08-28
发明人： Lutz Christian GERHARDT , Maria Estrella MENA BENITO , Ashoka Sathanur VISWESWARA , Cornelis Reinder RONDA , Lucas Petrus Henricus SCHEFFERS
摘要： There is provided a controller for a fluid-detection system, wherein the controller is configured to: determine if a user is interacting with the fluid detection system, wherein the determining comprises at least one of: determining whether a user is within a predetermined distance of the fluid detection system; determining whether a user is in physical contact with the fluid detection system; determining whether a fluid sensor of the fluid detection system is in a mouth of a user; and control the temperature of the fluid sensor of the fluid detection system based on the result of the determination. There is also provided a fluid based detection system comprising the controller, a device comprising the controller, a remote device comprising the controller, and a computer implemented method for controlling a fluid detection system, the method comprising the steps of: determining if a user is interacting with the fluid detection system, wherein the determining comprises at least one of: determining whether a user is within a predetermined distance of the system; determining whether a user is in physical contact with the fluid detection system; determining whether a fluid sensor of the fluid detection system is in a mouth of a user; and controlling the temperature of the fluid sensor of the fluid detection system based on the result of the determination.
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公开(公告)号：US20210358617A1
公开(公告)日：2021-11-18
申请号：US17286139
申请日：2019-10-15
摘要： An on-body sensor system (30) comprises at least two skin interface units (32, 34) for coupling signals into and out of the body, with one of the units being for placement at a known location. One unit applies electrical signals to the body and the other senses them at a remote location. By analyzing the sensed signals using a set of pre-determined body-transmission parameters, a position of one of the skin interface units can be determined. This allows accurate placement of one or the units, for instance to allow more accurate monitoring of physiological parameters using the unit. The body transmission parameters can change over time, whereas once the interface units are put in position, their position is stable. Hence the system also includes functionality to re-calibrate the transmission parameters using at least one known stable set of initial positions of the interface units. The re-calibration comprises a process of re-calculating the parameters based on the known positions. These can then be stored and used for future determinations of the position of the one of the skin interface units having a moveable location, for instance in the case that it is re-positioned or replaced.
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公开(公告)号：US20210259633A1
公开(公告)日：2021-08-26
申请号：US17254912
申请日：2019-06-25
摘要： An on-body sensing system (30) comprises a plurality of skin interface elements for coupling electrical signals to and from the body. The system is adapted to derive an indication of a position of at least one positionable interface unit (32) based on transmission of signals between the positionable unit and a set of spatially separated reference units (34), the reference units being positioned at a set of known locations on the body. Transmitted signals are sensed at multiple pairs (52) of electrodes on each reference unit and signal characteristics derived for each pair, and based on this a direction of arrival of the signal determined. By collating all of the measured arrival angles, and by reference to a reference dataset containing information indicative of known signal arrival angles when signals are transmitted internally between the reference units themselves, an indication of position of the positionable unit is derived.
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公开(公告)号：US20200305792A1
公开(公告)日：2020-10-01
申请号：US16649501
申请日：2018-09-17
摘要： There is provided a wearable device operable to determine an orientation of the wearable device, when placed on a body. The wearable device comprises a plurality of electrode pairs located at different positions. At least two of the plurality of electrode pairs are configured to receive a signal transmitted from a reference device using the body as a transmission medium. The wearable device also comprises a processor configured to determine a property associated with the signal received at the at least two electrode pairs, compare the determined property to a corresponding reference property and determine, from the comparison, whether the wearable device is in the predetermined orientation on the body. The determined property is indicative of an orientation of the wearable device with respect to the reference device and the corresponding reference property is indicative of a predetermined orientation for the wearable device on the body.
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公开(公告)号：US20210401346A1
公开(公告)日：2021-12-30
申请号：US17289863
申请日：2019-10-30
发明人： Ashoka Sathanur VISWESWARA , Mark Thomas JOHNSON , Lutz Christian GERHARDT , Ron Martinus Laurentius VAN LIESHOUT
摘要： According to an aspect, there is provided switch circuitry (1) for controlling power supplied to a fluid monitoring unit (4). The switch circuitry (1) comprises: a sensor (2) configured to detect fluid derived from the skin of a user and to generate a detection signal in response to detection of fluid; and a controller (3) configured to receive the detection signal, to generate a wake-up signal in accordance with the detection signal, and to supply the wake-up signal to a switch (6) controlling the power supply to the fluid monitoring unit (4) so as to activate the switch (6) and wake the fluid monitoring unit (4), wherein, optionally, the fluid is sweat. According to another aspect, there is provided method of controlling power to a fluid monitoring unit.
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公开(公告)号：US20210359769A1
公开(公告)日：2021-11-18
申请号：US17286105
申请日：2019-10-11
摘要： An on/in-body communication system (10) is described that may include a peripheral, (such as, for example portable, unit (12)) and body-mountable unit (20). The peripheral unit and body-mountable unit may communicate via body-coupled acoustic signals. This may facilitate secure transmission of a secure key from the peripheral unit to the body-mountable unit. The body-mountable unit may include an array (28) of acoustic sensor elements (30) disposed at a body-coupling surface (32) of the body-mountable unit for receiving a transmitted acoustic signals, the array formation facilitating multi- or omni-directional sensing. A key may be transferred in an initialization procedure which may include establishing communications with an external device (42) via an off-body communication medium, acquiring from the external device a secure key, and/or driving acoustic transmission of the secure key to the body-mountable device via an acoustic signal generator (14).
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公开(公告)号：US20210212590A1
公开(公告)日：2021-07-15
申请号：US17254895
申请日：2019-06-26
摘要： An on-body sensor system (30) comprises means for determining a position of a skin interface unit (34) based on transmission and receipt of electrical signals to the unit from a known transmitter (32) location, transmitted via electrical channels of the body. By comparing sensed signal characteristics of the received signals with a plurality of sets of pre-determined signal characteristics, each set associated with one of a plurality of different reference positions and/or orientations of the receiver (34) on the body, it is possible to derive an indication of the position of the receiver unit on the body.
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公开(公告)号：US20200037927A1
公开(公告)日：2020-02-06
申请号：US16492191
申请日：2018-03-13
摘要： There is provided a method of estimating a location and/or orientation of a handheld personal care device with respect to a user of the handheld personal care device. The method includes obtaining measurements of a posture of a part of the body of the user as the user uses the handheld personal care device. The method also includes using the measurements to estimate the location and/or orientation of the handheld personal care device with respect to the user during use of the handheld personal care device based on a predetermined relationship between the location and/or orientation of the handheld personal care device with respect to the user and, exclusively, the posture of the part of the body of the user. A personal care system and a machine-readable medium are also disclosed.
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