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1. (IN176/CHENP/2008) AN APPARATUS, A SYSTEM AND A METHOD FOR ENABLING AN IMPEDANCE MEASUREMENT

Office : India
Application Number: 176/CHENP/2008 Application Date: 10.01.2008
Publication Number: 176/CHENP/2008 Publication Date: 19.09.2008
Publication Kind : A
Prior PCT appl.: Application Number:PCTIB0652153 ; Publication Number:WO2007007217A1 Click to see the data
IPC:
G01R 27/02
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27
Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02
Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V.
Inventors: WAFFENSCHMIDT, EBERHARD
IGNEY, CLAUDIA, HANNELORE
BRAUERS, ANDREAS
Priority Data: 05106402.0 13.07.2005 EP
Title: (EN) AN APPARATUS, A SYSTEM AND A METHOD FOR ENABLING AN IMPEDANCE MEASUREMENT
Abstract:
(EN) The invention relates to an apparatus (1) for impedance measurement of an external substance, said apparatus comprising a plurality of resonant circuits with respective coil elements (3a, 3b, 3c, 3d) and respective capacitive elements (5a, 5b, 5c, 5d), said resonant circuits operating at different resonant frequencies. The signals (S1, S2, S3, S4) from the resonant circuits are detected by an ampere meter (6). The power loss experienced by the resonant circuits due to an electromagnetic interaction with a conductive body is reflected in a change in the magnitude of respective signals. By detecting the signal (S1, S2, S3 or S4), the power loss by the resonant circuit is determined. The resonant circuit is preferably integrated into an insulating fabric carrier (2). The invention further relates to a vital sign measurement system and a method of enabling an impedance measurement.
Also published as:
EP1904860JP2009501040US20080218180CN101218513WO/2007/007217