US Patent No. 10,561,043

AIR CONDITIONING CONTROL DEVICE AND AIR CONDITIONING CONTROL METHOD


Patent No. 10,561,043
Issue Date February 11, 2020
Title Air Conditioning Control Device And Air Conditioning Control Method
Inventorship Kazunori Iwasa, Yokohama (JP)
Assignee FUJITSU LIMITED, Kawasaki (JP)

Claim of US Patent No. 10,561,043

1. An air conditioning control device comprising:a memory and;
a processor coupled to the memory and the processor configured to:
acquire, for each of sensor data items, a plurality of pieces of sensor data which are detected in a time period;
calculate an average of the plurality of pieces of sensor data;
calculate, based on the average of the plurality of pieces of sensor data, a setting temperature for air conditioning control at which electric power cost corresponding to electric power consumed by the air conditioning control is lowest,
store, in a table, lowest electric power cost and the corresponding setting temperature as a power cost priority item in association with a detection time of the plurality of pieces of sensor data,
create a plurality of setting temperature patterns based on the average of the plurality of pieces of sensor data for one of the sensor data items and a past setting temperature which is set in past;
calculate, for each of the plurality of setting temperature patterns, a failure rate of a device which is installed in a target place for the air conditioning control,
acquire a setting temperature of a setting temperature pattern at which a failure cost corresponding to the failure rate is lowest from among the plurality of setting temperature patterns,
store, in the table, the lowest failure cost and the corresponding setting temperature as a failure cost priority item in association with the detection time of the plurality of pieces of sensor data,
calculate a first total cost by adding the lowest electric power cost to a failure cost corresponding to a failure rate when air conditioning control is performed based on the setting temperature corresponding to the lowest electric power cost,
calculate a second total cost by adding the lowest failure cost to an electric power cost corresponding to electric power when air conditioning control is performed based on the setting temperature corresponding to the lowest failure cost,
compare the first total cost and the second total cost, and
determine a new setting temperature for air conditioning control which corresponds to smaller one between the first total cost and the second total cost.