INDUCTIVE SENSING DEVICE AND METHOD

INDUCTIVE SENSING DEVICE AND METHOD

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 frequencie...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KLEIJNEN, Mark, BEZEMER, Rick, DOODEMAN, Gerardus Johannes Nicolaas, GROSFELD, Ronny Hubertus Johannes, PEETERS, Wouter Herman, LEIJSSEN, Jacobus Josephus
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Beschreibung
Zusammenfassung: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.