Angle detector

Details Angle detector Angle detector

1976-11-10

1978-06-13

Phillips, Charles E.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 906

Patent

active

040940730

ABSTRACT:
An angle detector for determining a transducer's angular disposition to a capacitive pickup element. The transducer comprises a pendulum mounted inductive element moving past the capacitive pickup element. The capacitive pickup element divides the inductive element into two parts L.sub.1 and L.sub.2 which form the arms of one side of an a-c bridge. Two networks R.sub.1 and R.sub.2 having a plurality of binary weighted resistors and an equal number of digitally controlled switches for removing resistors from the networks form the arms of the other side of the a-c bridge. A binary counter, controlled by a phase detector, balances the bridge by adjusting the resistance of R.sub.1 and R.sub.2. The binary output of the counter is representative of the angle.

REFERENCES:
patent: 2633028 (1955-03-01), Fillebrown

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