| 摘要 |
<p>A refrigerator equipped with: storage compartments which are partitioned by means of insulated walls and an insulated door, and in which storage objects are stored; a light source arranged within a storage compartment; an optical sensor (21) that detects illuminating light emitted from the light source; and a calculation control unit (1) that performs a calculation process on the basis of the detection result of the optical sensor (21). The calculation control unit (1) has: an attenuation rate calculation unit (81) which, on the basis of a standard storage compartment lighting intensity when there are no storage objects in the storage compartments and on the basis of the lighting intensity detected by the optical sensor (21), calculates an attenuation rate from a standard storage compartment lighting intensity when storage objects are stored; and a storage state estimation unit (82) which estimates the storage amount of the storage objects on the basis of the calculation result of the attenuation rate calculation unit (81).</p> |
