Self-learning relay turn-off control system and method

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United States of America Patent

PATENT NO 9754744
SERIAL NO

14835917

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Abstract

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An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected to the relay, and a rectifier circuit connected to the relay current load sensor and having an output. A microprocessor may be connected to the rectifier circuit output. The microprocessor may be configured to set a relay turn-off signal output time based on an empirically determined duration time for the relay to turn-off and further based on determining a zero-cross period via use of a modulo operation.

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Patent Owner(s)

  • EMERSON ELECTRIC CO.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hu, Daxing Jiangsu, CN 1 2
Wan, Lili Jiangsu, CN 7 9

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