Back to results
US 12,415,105 B2Granted
Solenoid supervisory system
AssigneePotter Electric Signal Company, LLC
InventorsTimothy B. Decker, Michael F. Cabral, Andrew Louis Berry
Life of this patent
Estimating the term…
Abstract
Systems and methods for a solenoid supervisory detection system which can detect the presence or absence of a solenoid plunger within a solenoid coil. These systems can be used to verify correct reassembly of a solenoid valve after it has been disassembled for testing.
Claims6
A system for detecting the presence of a solenoid plunger within a solenoid winding, the system comprising:
- a solenoid coil assembly comprising said solenoid winding;
- a solenoid plunger assembly comprising said solenoid plunger;
- an electric circuit connected to said solenoid winding, said circuit comprising:
- an isolated power supply;
- a Colpitts oscillator;
- a microcontroller comprising:
- a low pass filter, rectifying and attenuating output of the oscillator;
- a non-inverting amplifier, amplifying output of the low pass filter;
- and
- a comparator for comparing output of said amplifier against a set voltage;
- wherein said microcontroller supplies two different types of signals to said solenoid winding;
- and
- a monostable multivibrator acting on output of said comparator to drive a FET opto-coupler.
10 more elements
Dependencies are inferred from the claim text.