Contactless interrogation of sensors for smart structures

Details Contactless interrogation of sensors for smart structures Contactless interrogation of sensors for smart structures

1993-06-14

1995-07-18

Raevis, Robert

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

G01L 100

Patent

active

054331153

ABSTRACT:
Apparatus for contactless interrogation of an sensor integrally disposed with a structure including a pair of coils for coupling signals across a gap between a sensing circuit having a sense coil and an interrogation circuit having an exciter coil connectable to a variable frequency supply, the sensing circuit comprising a circuit for changing current through the sense coil in relation to the sensor output; the interrogation circuit comprising a circuit for detecting current in the exciter coil induced by the sense coil current; and control means for determining the sensor output based on the exciter coil current compensated for the gap.

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Translation of WO9100985.
S. F. Masri et al. Structure-unknown non-linear dynamic systems: identification through neural networks.

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