Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1997-10-02
2000-04-25
Noori, Max
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73771, 73780, G01B 716
Patent
active
060530502
ABSTRACT:
A current-driven signal conditioning system comprising a first terminal, a second terminal, a strain gauge, and an instrumentation amplifier is disclosed. The strain gauge is adapted to measure a deformation of a structure and to generate a resistance which corresponds to the measured deformation. The instrumentation amplifier is adapted to be connected between the first terminal and the second terminal. The instrumentation amplifier is further adapted to be connected to the strain gauge and to place an output current on the second terminal. The output current is proportional to the resistance generated by the strain gauge. An output resister is coupled between the strain gauge and the second terminal, and a capacitor is coupled between the resister and the first terminal. A zenor diode is coupled between the first terminal and the strain gauge, and a diode is also coupled between the first terminal and the strain gauge.
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Bohr Gerald
Korkosz Gregory J.
Zahzah Mohamad
McDonnell Douglas Corporation
Noori Max
Stout Donald E.
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