| 摘要 |
PURPOSE: An automatic door opening system of refrigerator is provided to conveniently open the door of a refrigerator by using voice signal so that the old and the weak can easily open the door without using hands. CONSTITUTION: An automatic door opening system of refrigerator includes a door switch(20) for sensing opened/closed state of door to output a door state signal, a voice recognition unit(10) mounted on a door of the refrigerator for converting a voice signal to an electric signal, a voice sensing circuit(12) for outputting a predetermined voice confirmation signal according to the signal transmitted from the voice recognition unit, a microcomputer(40) for outputting a predetermined control signal by an arithmetic of the output signals from the door switch and voice sensing circuit, an electromagnet driving part(50) for outputting a predetermined electric signal as a control signal according to the control signal output from the microcomputer, and the electromagnet(60) to be driven by the control signal output from the electromagnet driving part for opening the door by magnetic repulsive force.
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