Air-conditioning control system

An air-conditioning control system comprising:

• a measurer measuring a body movement of a person in a room, a space of which is to be air-conditioned by an air conditioner;
• a deriver deriving heartbeat-related parameters based on a result of the measurement by the measurer, the heartbeat-related parameters being related to N-N intervals of the person;
• a determiner determining a stress level of the person at a current moment based on the heartbeat-related parameters;
• a receiver capable of receiving a use information item indicating a use of the space for the person;
• and
• an operation controller (i) selecting a heartbeat-related parameter to be changed from among the heartbeat-related parameters depending on a result of the determination by the determiner and the use information item, and (ii) controlling operation of the air conditioner to change the selected heartbeat-related parameter to be changed, wherein
• the heartbeat-related parameters have priorities previously set for each of the use information items, the priorities being unchangeable and applicable when the heartbeat-related parameters are to be selected to be changed,
• the operation controller selects the heartbeat-related parameter to be changed, depending on the priorities corresponding to the received use information item, and the result of the determination by the determiner,
• the determiner compares the heartbeat-related parameters with thresholds each corresponding to one of the heartbeat-related parameters to determine the stress level of the person,
• for each of a plurality of stress levels, the heartbeat-related parameter to be changed for each of a plurality of use information items is set as follows:
• if none of the heartbeat-related parameters are below the thresholds, the heartbeat-related parameter included in the heartbeat-related parameters having a highest priority among the priorities is set as the heartbeat-related parameter to be changed;
• if one of the heartbeat-related parameters is below a corresponding one of the thresholds, either the one heartbeat-related parameter below the threshold or the heartbeat-related parameter having the highest priority is set as the heartbeat-related parameter to be changed;
• and
• if two or more of the heartbeat-related parameters are below respective thresholds among the thresholds, the heartbeat-related parameter having the highest priority among the two or more of the heartbeat-related parameters is set as the heartbeat-related parameter to be changed.