G - Physics
01
P
G01P 13/00 (2006.01)
Patent
CA 2492568
A position detector for counting rotational and/or translatory movements in at least one direction has at least one exciter magnet, a single ferromagnetic element and at least one induction coil. Relative movements between the exciter magnet and the ferromagnetic element represent the movements to be counted. The energy which is taken from the movement of those two elements during the approach as therebetween and which is accumulated by means of the ferromagnetic element is liberated in the form of a voltage pulse produced in the induction coil when a given relative position is reached. A rectifier circuit rectifies the voltage pulses and charges a capacitor. Upon the occurrence of a voltage pulse to be counted at least one comparator circuit produces a pulse recognition signal which a non-volatile counting and memory circuit counts and stores, the charge in the capacitor serving for power supply purposes. A data read circuit takes over further processing and output of the data of the counting and memory circuit to a user and a control circuit prevents mutual interference as between the counting and memory circuit and the data read circuit.
Mehnert Walter
Theil Thomas
Mehnert Walter
R. William Wray & Associates
Theil Thomas
LandOfFree
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