DIAGNOSTIC ELEMENT FOR VALIDATION OF BOLT DETECTION OF A GUARD LOCKING SWITCH IN A STATIC STATE

A system for sensing a position of a locking bolt of an industrial locking switch includes an inductive circuit, a converter, and a master controller. The inductive circuit includes an inductive coil and a capacitor electrically connected in parallel. The inductive coil is positioned to receive a lo...

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Bibliographic Details
Main Authors Cai, Yongyao, Wolfe, Timothy P
Format Patent
LanguageEnglish
Published 31.12.2020
Subjects
ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE
CHECKING-DEVICES
GENERATING RANDOM NUMBERS
PHYSICS
REGISTERING OR INDICATING THE WORKING OF MACHINES
TIME OR ATTENDANCE REGISTERS
VOTING OR LOTTERY APPARATUS
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Summary:A system for sensing a position of a locking bolt of an industrial locking switch includes an inductive circuit, a converter, and a master controller. The inductive circuit includes an inductive coil and a capacitor electrically connected in parallel. The inductive coil is positioned to receive a locking bolt of an industrial locking switch when the locking bolt is transitioned to a lock position. The converter is configured to convert a frequency of a current signal on the inductive circuit to a digital frequency value. The master controller is configured to generate a bolt detection signal in response to determining that the digital frequency value changes by an amount equal to or substantially equal to a defined frequency shift corresponding to a frequency shift induced by the inductive coil in response to presence of the locking bolt within the inductive coil's magnetic field.
Bibliography:Application Number: US202017020912