Air-conditioning system, control method, and recording medium

Abstract

An air-conditioning system includes a temperature adjuster to adjust temperature in an air-conditioned target area, a humidity adjuster to adjust humidity in an air-conditioned target area, a sensor to obtain environment information including the temperature or the humidity in the air-conditioned target area, and a controller The controller includes an estimator to estimate time variations in the temperature and the humidity in the air-conditioned target area based on the environment information, target values of the temperature and the humidity, and a control schedule indicating time variations in outputs of the temperature adjuster and the humidity adjuster, a control determiner to optimally calculate the control schedule and determine an optimal control schedule based on the time variations in the temperature and the humidity and the target values, an adjuster controller to control the temperature adjuster and the humidity adjuster based on an optimal control schedule determined by the control determiner.

1 . An air-conditioning system, comprising:
 a temperature adjustment device to adjust temperature in an air-conditioned target area;   a humidity adjustment device to adjust humidity in the air-conditioned target area;   a sensor to obtain environment information including the temperature or the humidity in the air-conditioned target area; and   processing circuitry, wherein   the processing circuitry
 estimates time variations in the temperature and the humidity in the air-conditioned target area based on the environment information obtained by the sensor, target values of the temperature and the humidity, and a control schedule indicating time variations in outputs of the temperature adjustment device and the humidity adjustment device from start of control to end of control, 
   optimally calculates the control schedule and determines an optimal control schedule based on the time variations in the estimated temperature and the estimated humidity and the target values, and   controls the temperature adjustment device and the humidity adjustment device based on the optimal control schedule determined by the control determiner.   
     
     
         2 . The air-conditioning system according to  claim 1 , further comprising:
 a storage device to store model information, wherein   the processing circuit estimates the time variations in the temperature and the humidity in the air-conditioned target area by inputting the environment information, the target values, and the control schedule to the model information indicating a relationship between the environment information, the target values, and the control schedule, and   the processing circuit modifies
 model information stored in the storage device. 
   
     
     
         3 . The air-conditioning system according to  claim 2 , wherein the processing circuit modifies the model information stored in the storage device at each modification interval using time-series data of the environment information obtained by the sensor. 
     
     
         4 . The air-conditioning system according to  claim 1 , wherein the environment information includes at least one of temperature of air blown from the temperature adjustment device, humidity of air blown from the humidity adjustment device, temperature outside the air-conditioned target area, or humidity outside the air-conditioned target area. 
     
     
         5 . The air-conditioning system according to  claim 1 , further comprising:
 a server including the processing circuit, wherein   the server is connected to the temperature adjustment device, the humidity adjustment device, and the sensor.   
     
     
         6 . The air-conditioning system according to  claim 1 , wherein the processing circuit generates a learned model from the environment information, the target values, and the control schedule, and generate the optimal control schedule using the learned model. 
     
     
         7 . The air-conditioning system according to  claim 6 , wherein
 the processing circuit   obtains the environment information and the target values as input, obtains the control schedule as output, and generates the learned model to infer the optimal control schedule from the environment information and the target values, and   infers the optimal control schedule based on the generated learned model and the environment information and the target values.   
     
     
         8 . The air-conditioning system according to  claim 3 , wherein
 after modifying the model information, the processing circuit calculates a time average value between the time variation in the temperature or the humidity in the air-conditioned target area estimated by the estimator and the time variation in the temperature or the humidity in the air-conditioned target area obtained from the environment information obtained by the sensor, and stores the calculated time average value in the storage device, and   the processing circuit compares the time average value calculated after modifying the immediately preceding model information with the time average value calculated after modifying the model information prior to modifying the immediately preceding model information, and determining a modification interval of the model information based on a result of the comparison.   
     
     
         9 . A control method, comprising:
 obtaining environment information including temperature or humidity in an air-conditioned target area;   estimating time variations in the temperature and the humidity in the air-conditioned target area based on the environment information, the target values of the temperature and the humidity, and a control schedule indicating a time variation in output, from start of control to end of control, of a temperature adjustment device that adjusts the temperature in the air-conditioned target area and a time variation in output, from start of control to end of control, of a humidity adjustment device that adjusts the humidity in the air-conditioned target area,   optimally calculating the control schedule and determining an optimal control schedule based on the estimated time variations in the temperature and the humidity and the target values, and   controlling the temperature adjustment device and the humidity adjustment device based on the optimal control schedule.   
     
     
         10 . A non-transitory computer-readable recording medium storing a program, the program causing a computer to:
 obtain environment information including temperature or humidity in an air-conditioned target area;   estimate time variations in the temperature and the humidity in the air-conditioned target area based on the environment information, the target values of the temperature and the humidity, and a control schedule indicating a time variation in output, from start of control to end of control, of a temperature adjustment device that adjusts the temperature in the air-conditioned target area and a time variation in output, from start of control to end of control, of a humidity adjustment device that adjusts the humidity in the air-conditioned target area,   optimally calculate the control schedule and determine an optimal control schedule based on the estimate time variation in the temperature and the humidity and the target value, and   control the temperature adjustment device and the humidity adjustment device based on the optimal control schedule.   
     
     
         11 . The air-conditioning system according to  claim 1 , wherein
 the optimal control schedule is determined by optimal calculation of the control schedule by bringing temperature to follow the target value without deviation and bringing humidity to follow the target value without deviation.   
     
     
         12 . The air-conditioning system according to  claim 1 , wherein
 when the humidity in the air-conditioned target area at the start of control is near the target value, the optimal control schedule includes an optimal control schedule that is the control schedule that varies the temperature and the humidity in the air-conditioned target area along an equal relative humidity line.