Abstract: The invention relates to a force measuring transducer with an oscillator (1) with an inductor (2) formed by a primary winding and a gauge (11) with a secondary winding (30) which is connected electroconductively to the gauge (11) and which is disposed in transformer coupling with the inductor (2) of the oscillator (1). Action of a force on the gauge (11) changes the impedance of the gauge (11) and the load of the inductively coupled secondary winding (30). An evaluation circuit (14) is used to determine the resulting frequency change of the oscillator (1) which is proportional to the force acting on the gauge (11).
Type:
Grant
Filed:
October 13, 2006
Date of Patent:
July 22, 2008
Assignee:
Occluscan AG
Inventors:
Bruno Starek, Franz Vekoerrer, Helmut Purner
Abstract: The invention relates to a force measuring transducer with an oscillator (1) with an inductor (2) formed by a primary winding and a gauge (11) with a secondary winding (30) which is connected electroconductively to the gauge (11) and which is disposed in transformer coupling with the inductor (2) of the oscillator (1). Action of a force on the gauge (11) changes the impedance of the gauge (11) and the load of the inductively coupled secondary winding (30). An evaluation circuit (14) is used to determine the resulting frequency change of the oscillator (1) which is proportional to the force acting on the gauge (11).
Type:
Grant
Filed:
September 17, 2004
Date of Patent:
October 17, 2006
Assignee:
Occluscan AG
Inventors:
Bruno Starek, Franz Vekoerrer, Helmut Purner