Self-powered electro-optic rotational position sensor with magnetic pickup
First Claim
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1. A self-powered variable reluctance sensor system comprising:
- a coil of wire, having first and second terminals, wherein the coil is proximate to a rotatable material a rotation of the rotatable material causing a magnetic flux to cut through the coil and generate in the coil voltage signals at the first and second terminals;
a first transistor having a first terminal connected to the first terminal of said coil, and having second and third terminals;
a second transistor having a first terminal connected to the first terminal of said coil, having a second terminal connected to the second terminal of said first transistor, and having a third terminal;
a first capacitor having a first terminal connected to the third terminal of said first transistor and having a second terminal connected to the second terminal of said coil;
a second capacitor having a first terminal connected to the third terminal of said second transistor and having a second terminal connected to the second terminal of said coil;
a third capacitor having a first terminal connected to the third terminal of said first transistor and having a second terminal connected to the third terminal of said second transistor;
a retriggerable monostable multivibrator having a first input connected to the second terminal of said first transistor, having a second input terminal, a clear terminal and a voltage terminal connected to the third terminal of said first transistor, having a reference terminal connected to the third terminal of said second transistor, having an external resistor terminal, having an external capacitor terminal and having an output terminal;
a first resistor having a first terminal connected to the external resistor terminal of said multivibrator and having a second terminal connected to the voltage terminal of said multivibrator; and
a fourth capacitor having a first terminal connected to the external capacitor terminal of said multivibrator and having a second terminal connected to the external resistor terminal of said multivibrator.
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Abstract
An indicating system for measuring movement of a material, having a magnetic pickup device, waveform conditioning circuit and light signal emitter functioning under the system'"'"'s own self-made power, having a light waveguide or optic fiber connecting the light signal emitter to a light signal receiver which in turn is connected to a signal processor for outputting information such as speed, acceleration and/or position of the material.
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Citations
5 Claims
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1. A self-powered variable reluctance sensor system comprising:
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a coil of wire, having first and second terminals, wherein the coil is proximate to a rotatable material a rotation of the rotatable material causing a magnetic flux to cut through the coil and generate in the coil voltage signals at the first and second terminals; a first transistor having a first terminal connected to the first terminal of said coil, and having second and third terminals; a second transistor having a first terminal connected to the first terminal of said coil, having a second terminal connected to the second terminal of said first transistor, and having a third terminal; a first capacitor having a first terminal connected to the third terminal of said first transistor and having a second terminal connected to the second terminal of said coil; a second capacitor having a first terminal connected to the third terminal of said second transistor and having a second terminal connected to the second terminal of said coil; a third capacitor having a first terminal connected to the third terminal of said first transistor and having a second terminal connected to the third terminal of said second transistor; a retriggerable monostable multivibrator having a first input connected to the second terminal of said first transistor, having a second input terminal, a clear terminal and a voltage terminal connected to the third terminal of said first transistor, having a reference terminal connected to the third terminal of said second transistor, having an external resistor terminal, having an external capacitor terminal and having an output terminal; a first resistor having a first terminal connected to the external resistor terminal of said multivibrator and having a second terminal connected to the voltage terminal of said multivibrator; and a fourth capacitor having a first terminal connected to the external capacitor terminal of said multivibrator and having a second terminal connected to the external resistor terminal of said multivibrator. - View Dependent Claims (2, 3, 4, 5)
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Specification