公开(公告)号：US20210321898A1

公开(公告)日：2021-10-21

申请号：US17273361

申请日：2019-08-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wouter Herman PEETERS ,  Jacobus Josephus LEIJSSEN ,  Gerardus Johannes Nicolaas DOODEMAN ,  Rick BEZEMER ,  Mark Peter Paul KLEIJNEN ,  Ronny Hubertus Johannes GROSFELD

IPC: A61B5/05 ,  A61B5/00

Abstract: An inductive sensing device comprises first (16) and second (24) loops, the first loop (16) being coupled with a capacitor to form a resonator circuit (20), and the resonator circuit and second loop being coupled via an active buffering component (28). The active buffering component provides voltage to current amplification, and an output of the buffering component drives a current in the second loop. Conductive lines forming each of the first and second loop parts are radially spaced apart.

公开(公告)号：US20190090957A1

公开(公告)日：2019-03-28

申请号：US16086342

申请日：2017-03-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Willem-Jan Arend DE WIJS ,  Gerardus Johannes Nicolaas DOODEMAN ,  Jacobus Josephus LEIJSSEN ,  Michel DE JONG ,  Jan Harm de BOER

IPC: A61B34/20 ,  A61B8/08 ,  A61B90/00 ,  A61B17/34

Abstract: The present invention relates to a system SY for determining a position of an RF transponder circuit RTC respective an ultrasound emitter unit UEU. The RF transponder circuit RTC emits RF signals that are modulated based on received ultrasound signals that are emitted or reflected by the ultrasound emitter unit UEU. The position of the RF transponder circuit RTC respective the ultrasound emitter unit UEU is determined based on a time difference ΔT1 between the emission of an ultrasound signal by the ultrasound emitter unit UEU and the detection by the RF detector unit RFD of a corresponding modulation in the RF signal emitted or reflected by the RF transponder circuit (RTC).

公开(公告)号：US20190336014A1

公开(公告)日：2019-11-07

申请号：US16475394

申请日：2018-01-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wouter Herman PEETERS ,  Mark Peter Paul KLEIJNEN ,  Gerardus Johannes Nicolaas DOODEMAN ,  Rick BEZEMER ,  Jacobus Josephus LEIJSSEN ,  Ronny Hubertus Johannes GROSFELD

IPC: A61B5/0265 ,  A61B5/00

Abstract: The invention provides a magnetic inductive sensing system for sensing electromagnetic signals emitted from a body in response to electromagnetic excitation signals applied to the body. The electromagnetic signals are generated and sensed by the same loop resonator which comprises a single-turn loop antenna and a tuning capacitor. The loop antenna of the resonator and a signal generation means for exciting the resonator to generate excitation signals are together configured so as to optimize the value of a ratio between the radial frequency of the generated electromagnetic excitation signals and a reference frequency of the antenna, where the reference frequency is the frequency for which one wavelength of the generated excitation signals (waves) matches the circumferential length of the antenna. This ratio, which corresponds to a normalized radial frequency of the generated excitation signals, is maintained between a value of 0.025 and 0.50.

公开(公告)号：US20210121091A1

公开(公告)日：2021-04-29

申请号：US17252988

申请日：2019-06-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Gerardus Johannes Nicolaas DOODEMAN ,  Mark Peter Paul KLEIJNEN ,  Jacobus Josephus LEIJSSEN ,  Ronny Hubertus Johannes GROSFELD ,  Wouter Herman PEETERS ,  Rick BEZEMER

IPC: A61B5/05

Abstract: An inductive sensing device (22) is for sensing at two different frequencies. The device includes an antenna (24) which comprises at least two loop parts (30, 32), each loop part coupled to a different respective tuning capacitor (36a, 36b) to thereby provide different respective resonant frequencies for the first and second loop parts. The two loop parts are jointly connected to a shared input connection (38) for receiving driving signals for driving both antenna parts. A control means (44) controls a drive circuit (34) to supply the antenna, via the shared input connection, drive signals of each of the frequencies, implementing switching between the two.

公开(公告)号：US20190328352A1

公开(公告)日：2019-10-31

申请号：US16475313

申请日：2018-01-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Jacobus Josephus LEIJSSEN ,  Gerardus Johannes Nicolaas DOODEMAN ,  Rick BEZEMER

IPC: A61B7/00 ,  A61B5/04 ,  A61B5/08 ,  A61B5/00

Abstract: According to an aspect, there is provided a stethoscope apparatus stethoscope apparatus, the stethoscope apparatus comprising a sound sensor for measuring sounds produced by the breathing of a subject and for outputting a sound signal representing the measured breathing sounds; an antenna for receiving a modulated electromagnetic signal from the body, wherein the modulated electromagnetic signal is modulated by movement of air, fluid and/or tissue in the body; a processing unit that is configured to receive the sound signal from the sound sensor and the modulated electromagnetic signal from the antenna; and normalise the sound signal using the modulated electromagnetic signal.