System and method for calibrating an electro-permanent magnet key switch assembly

An electro-permanent magnet (EPM) key assembly of an information handling system may include an electro-permanent magnet (EPM) that may include a low-coercivity magnet and a high-coercivity magnet and a magnetic field sensor to detect the magnitude of the magnetic field of the EPM; and a calibration...

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Bibliographic Details
Main Authors Morrison, Jason S, Casparian, Mark A
Format Patent
LanguageEnglish
Published 06.10.2020
Subjects
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
INDUCTANCES
MAGNETS
PHYSICS
PULSE TECHNIQUE
RELAYS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SELECTORS
TRANSFORMERS
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Summary:An electro-permanent magnet (EPM) key assembly of an information handling system may include an electro-permanent magnet (EPM) that may include a low-coercivity magnet and a high-coercivity magnet and a magnetic field sensor to detect the magnitude of the magnetic field of the EPM; and a calibration module to calibrate the magnitude of the magnetic field of the EPM by receiving a sensed magnitude value of the magnetic field of the EPM and adjusting the magnitude value of the magnetic field of the EPM when that magnitude value deviates from an established value by a threshold amount.
Bibliography:Application Number: US201916405941