Artificial intelligent refrigerator

An artificial intelligent refrigerator comprising:

• a first temperature sensor configured to sense a first temperature of a refrigerating compartment;
• a second temperature sensor configured to sense a second temperature of a freezing compartment;
• and
• a processor configured to:
• calculate a load accumulation amount of items stored in the refrigerating compartment and the freezing compartment based on at least one of the first temperature or the second temperature;
• and
• perform an operation corresponding to a load using the calculated load accumulation amount,
• wherein the processor is further configured to:
• calculate the load accumulation amount by learning a variation of the first temperature, a variation of the second temperature, at least one of an external air temperature or humidity of the artificial intelligent refrigerator, and an operation state of the artificial intelligent refrigerator;
• set a step range of the calculated load accumulation amount, the step range being a percentage of an amount of change in load accumulation divided into control responses at a stepped basis;
• change a cooling ability value of load correspondence according to the set step range of the calculated load accumulation amount;
• and
• generate a notice signal that an overload accumulation amount has been generated based on the load accumulation amount being out of the set step range of the load accumulation amount and being maintained for a set time,
• wherein the step range includes a plurality of groups using different cooling abilities, each group of the plurality of groups includes a plurality of steps using the same cooling ability, and at least two groups among the plurality of groups that use the different cooling abilities use a same fan speed.