Abstract: A refrigerator includes a compressor configured to circulate a refrigerant, a condenser configured to condense the refrigerant circulated by the compressor, a cooling component configured to cool a storage compartment using the refrigerant condensed by the condenser, and a processor configured to control driving of the cooling component, acquire a load variation of the storage compartment of the refrigerator, the load variation having an effect on a refrigeration cycle, determine a drive value for driving a component forming the refrigeration cycle based on the load variation, drive the cooling component based on the drive value, and acquire the load variation with a lapse of time during at least one cooling period in which the refrigeration cycle cools the storage compartment.

Abstract: A refrigerator includes a compressor configured to circulate a refrigerant, a condenser configured to condense the refrigerant circulated by the compressor, a cooling component configured to cool a storage compartment using the refrigerant condensed by the condenser, and a processor configured to control driving of the cooling component, obtain a load variation of the storage compartment of the refrigerator, the load variation comprising a refrigeration cycle, identify a drive value for driving a component forming the refrigeration cycle based on the load variation, drive the cooling component based on the drive value, and obtain the load variation with a lapse of time during at least one cooling period in which the refrigeration cycle cools the storage cornpartment.

Abstract: The present invention continuously operates remaining slave devices except for abnormal slave devices and easily detects the abnormal slave devices, and comprises: a plurality of slave devices; a master device for controlling the plurality of slave devices; a transmission line including a main transmission line connected to the master device, and a plurality of sub-transmission lines branched from the main transmission line and connecting the plurality of slave devices in series, so as to enable data communication between the plurality of slave devices and the master device and to enable mutual data communication between the plurality of slave devices; and a blocking unit interposed between the main transmission line and each of the plurality of sub-transmission lines so as to enable the separation of the sub-transmission lines from the main transmission line.