Strain gauge simulator
AssigneeROLLS-ROYCE plc
InventorAlan H. Lock
Life of this patent
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Abstract
In order to facilitate the accurate calibration of a strain gauge amplifier, an electrical circuit is provided, the output of which simulates the output of a strain gauge. A given polarizing current which is the same as that normally applied to the strain gauge is applied to the electrical circuit. Additional, circuitry is provided for producing a single electrical output equivalent to that of the strain gauge.
Claims4
An electrical circuit so adapted that for the application of a given polarizing current thereto, the electrical output thereof is equivalent to the electrical output of a given strain gauge to which the same polarizing current has been applied, said circuit comprising means adapted to provide an electrical output equivalent to that of said strain gauge in a non-deformed condition, means adapted to provide an electrical output equivalent to the difference between the electrical outputs of said strain gauge in deformed and non-deformed conditions and means adapted to combine said electrical outputs to provide a single electrical output equivalent to that of said strain gauge.
Dependencies are inferred from the claim text.