公开(公告)号：US11877837B2

公开(公告)日：2024-01-23

申请号：US17440236

申请日：2020-03-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Mark Peter Paul Kleijnen ,  Rick Bezemer ,  Wouter Herman Peeters ,  Gerardus Johannes Nicolaas Doodeman ,  Tim Patrick Steunebrink

IPC: G01R27/28 ,  A61B5/05 ,  G01R27/26 ,  H01Q7/00

CPC classification number: A61B5/05 ,  G01R27/2611 ,  H01Q7/005

Abstract: An apparatus (20) for use in inductive sensing includes a loop antenna (26) and a signal generator (24) for driving the antenna, these forming a resonator circuit (22). The resonator circuit is drivable in a drive state in which the antenna is driven at resonance to thereby generate electromagnetic signals. The arrangement further includes a switching means (28) for switchably inhibiting the drive state of the antenna This allows in use controllable switching of the antenna in and out of the drive state to thereby control switching signal generation on and off.

公开(公告)号：US20240351482A1

公开(公告)日：2024-10-24

申请号：US18684485

申请日：2022-08-15

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Tim Patrick Steunebrink ,  Ralph Wilhelm Christianus Gemma Wijshoff

IPC: B60N2/00

CPC classification number: B60N2/0022 ,  B60N2/0027 ,  B60N2/0034 ,  B60N2210/14

Abstract: A method of calibrating an in-vehicle inductive sensing apparatus to the dimensions and/or posture of a user seated in the vehicle. An array of inductive sensing coils is mounted in a fixed position relative to a geometry of the seat in which the user is received. From the spatial pattern or distribution of inductive sensing signals, it is determined which subset of coils is positioned most appropriately, e.g. which is closest, to an anatomical body of interest. A biological measurement pertaining to the anatomical body of interest is computed using data from only the selected subset of coils.

公开(公告)号：US20230148889A1

公开(公告)日：2023-05-18

申请号：US17916154

申请日：2021-03-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wouter Herman Peeters ,  Tim Patrick Steunebrink ,  Dirk Willem Harberts ,  Gerardus Johannes Nicolaas Doodeman ,  Carlijn Andrea Vernooij

IPC: A61B5/05

CPC classification number: A61B5/05 ,  A61B5/6898

Abstract: A switching mechanism is for enabling use of an inductive sensing circuit (16) in association with a portable handheld device (14) having electromagnetic transmission functionality in a manner that avoids harmful interference of the electromagnetic transmissions of the portable device with the subject when medical sensing is being performed. In particular, embodiments provide a controller (12) arranged to control switching between two modes: a first mode in which at least a portion of the transmission functionality of the portable device is deactivated and concurrently the inductive sensing circuit is activated; and a second mode in which the electromagnetic transmission functionality of the portable device is fully activated, and the inductive sensing circuit is deactivated. Thus embodiments provide a means of toggling between two modes, the modes configured to avoid simultaneous inductive sensing and full-power electromagnetic transmission of the portable handheld device.

公开(公告)号：US20230045586A1

公开(公告)日：2023-02-09

申请号：US17786330

申请日：2020-12-08

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Tim Patrick Steunebrink ,  Carlijn Andrea Vernooij ,  Wouter Herman Peeters ,  Gerardus Johannes Nicolaas Doodeman ,  Joseph Ernest Rock

IPC: A61B5/02 ,  A61B5/00 ,  A61B5/0522

Abstract: An inductive sensing system (8) is for detecting bleeding (e.g. blood pools) in one or more regions of the body. The system comprises a resonator circuit (10) having at least one antenna (12) which is driven with an oscillatory drive signal to cause generation of electromagnetic signals for application to a body. The signals induce eddy currents in the body which generate secondary EM signals returned from the body. These interact with the resonator circuit by adding an additional component of inductance to the circuit. This inductance component varies depending upon the conductivity of the fluid in which the eddy current is induced. Blood has a different conductivity to other body fluids. The system is configured to detect presence of abnormal accumulations of blood based on the additional inductance component. The system generates a data output representative of the determination.

公开(公告)号：US20240000334A1

公开(公告)日：2024-01-04

申请号：US18039586

申请日：2021-11-22

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Tim Patrick Steunebrink ,  Gerardus Johannes Nicolaas Doodeman ,  Wouter Herman Peeters

IPC: A61B5/0522 ,  A61B5/00 ,  H03B5/12

CPC classification number: A61B5/0522 ,  A61B5/7225 ,  H03B5/1212

Abstract: A physiological parameter inductive sensing system has a loop resonator which inductively couples with electromagnetic signals emitted from the body. The loop resonator forms part of an oscillator circuit, and negative feedback control is used to control the oscillator circuit, based on a measured oscillation amplitude. Within the feedback control loop, an analog to digital converter is used with a first number of bits (or trits), and successive outputs of the analog to digital converter are combined to derive an output value with a resolution of a second number of bits, greater than the first number of bits (or trits). The feedback control of the amplitude of the oscillator circuit is achieved using the output value.

公开(公告)号：US20230172477A1

公开(公告)日：2023-06-08

申请号：US17916127

申请日：2021-03-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ercan Ferit Gigi ,  Wouter Herman Peeters ,  Gerardus Johannes Nicolaas Doodeman ,  Tim Patrick Steunebrink ,  Carlijn Andrea Vernooij

IPC: A61B5/0522 ,  A61B5/00

CPC classification number: A61B5/0522 ,  A61B5/7207

Abstract: A system (8) and method is for extracting from sensed induction signals, component signals pertaining to different physiological phenomena in the body. A resonator circuit (10) is oscillated at a certain frequency to generate an alternating electromagnetic field which is applied to a body to be investigated. This field induces secondary eddy currents in the body which interact with the primary magnetic field and alter at least the frequency and amplitude of the resonator circuit oscillating current. These changes in the current characteristics, in particular the frequency and amplitude, are measured and provide first and second input signals. A system (8) or method is provided by embodiments of the invention which is arranged to receive these input signals. A multitude of different composite or fused signals are then generated by the system, each formed from a different linear combination ratio of the two input signals. These are then assessed with a signal selection procedure to identify a best candidate signal for providing a measure or indication of a particular one or more physiological phenomena. This can be based on pre-defined selection criteria, for example relating to signal characteristics of the candidate signals.