G - Physics – 01 – D
Patent
G - Physics
01
D
G01D 5/24 (2006.01) G01N 27/22 (2006.01)
Patent
CA 2673963
The invention relates to an electrical measuring device for performing an electrical -impedance measurement in a contactless manner. The measuring device comprises a measuring unit which is provided with the impedance (7,8) to be measured and a passive resonance circuit (4) connected thereto for generating a measuring signal to be wirelessly received by a separate active transmitting and receiving unit for determination of the electrical impedance, upon wireless reception of an interrogation signal transmitted by the active transmitting and receiving unit'. Further, the measuring unit is provided with an additional reference circuit (5) which is preferably connected to the resonance circuit for, depending upon the interrogation signal, generating a reference signal to be received by the active transmitting and receiving unit.
L'invention porte sur un appareil de mesure permettant d'exécuter une mesure de résistance électrique sans contact. L'appareil de mesure comprend une unité de mesure à laquelle on fournit la résistance (7,8) à mesurer, et un circuit résonnant passif (4) y étant relié pour produire un signal de mesure reçu sans fil par une unité active séparée d'émission/réception déterminant la résistance au reçu d'un signal d'interrogation transmis par ladite unité d'émission/réception sans fil. L'unité de mesure comporte en outre un circuit de référence (5) de préférence relié au circuit résonnant en fonction du signal d'interrogation et produisant un signal de référence devant être reçu par l'unité active d'émission/réception.
Hilhorst Maximus Andreas
Meijer Gerardus Cornelis Maria
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Technische Universiteit Delft
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