INDUCTIVE SENSING SYSTEM FOR SENSING ELECTROMAGNETIC SIGNALS FROM A BODY

INDUCTIVE SENSING SYSTEM FOR SENSING ELECTROMAGNETIC SIGNALS FROM A BODY

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 o...

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Bibliographische Detailangaben
Hauptverfasser: DOODEMAN, Gerardus Johannes Nicolaas, PEETERS, Wouter Herman, STEUNEBRINK, Tim Patrick
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Beschreibung
Zusammenfassung: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.