Granted Patent B2

US 12,410,936 · App. 17/917,255 · Granted Sep 9, 2025

Inventors: Takeaki Shimokawa (Tokyo, JP); Aki Kimura (Tokyo, JP); Shogo Namatame (Tokyo, JP); Hirotoshi Yano (Tokyo, JP)

Assignee: MITSUBISHI ELECTRIC CORPORATION

F24F11/64F24F2110/10

Abstract

Claims (69)

1. An indoor-temperature estimation apparatus comprising:

a processor to execute a program; and

a memory to store the program which, when executed by the processor, performs processes of,

specifying a learning affected period and a learning unaffected period from operation history information indicating an operation history of a temperature control device controlling room temperature in a learning period, the room temperature being indoor temperature, the learning period being a period during which learning of the room temperature is performed, the learning affected period being a period during which the room temperature is affected by the temperature control device in the learning period, the learning unaffected period being a period during which the room temperature is unaffected by the temperature control device in the learning period;

generating a room temperature model in the learning unaffected period from room temperature history information, by learning external environment information and by learning room temperature in the learning unaffected period, the room temperature history information indicating a history of learning room temperature, and the external environment information indicating an outdoor environment;

estimating a learning temporary room temperature by using the room temperature model, the learning temporary room temperature being the room temperature estimated without an effect of the temperature control device in a same period as the learning affected period; and

generating a room temperature change model, in the learning affected period, by using the room temperature history information and the operation history information and by learning the learning room temperature and the learning temporary room temperature in the learning affected period, the room temperature change model indicating a change in the room temperature caused by the temperature control device.

2. The indoor-temperature estimation apparatus according to claim 1 , wherein,

the learning affected period is a period during which the temperature control device is turned on and a predetermined period after the temperature control device is turned off, and

the learning unaffected period is a period other than the learning affected period.

3. The indoor-temperature estimation apparatus according to claim 2 , wherein the processor generates, as the room-temperature-change model:

an on-state room temperature change model that is generated by learning a temperature difference between the learning temporary room temperature at a time the temperature control device is turned on and a set temperature of the temperature control device, and the learning room temperature in time-series after the temperature control device is turned on, to indicate a change in the room temperature from a time the temperature control device is turned on to a time the temperature control device is turned off; and

an off-state room temperature change model that is generated by learning a temperature difference between the learning temporary room temperature at a time the temperature control device is turned off and the learning room temperature at the time the temperature control device is turned off, and the learning room temperature in time-series after the temperature control device is turned off, to indicate a change in the room temperature from a time the temperature control device is turned off until the predetermined period passes.

4. The indoor-temperature estimation apparatus according to claim 1 , wherein

the processor refers to operation plan information to specify a target affected period and a target unaffected period, the operation plan information indicating an operation plan of the temperature control device in a target period during which the room temperature is estimated, the target affected period being a period during which the room temperature is affected by the temperature control device in the target period, the target unaffected period being a period during which the room temperature is not affected by the temperature control device in the target period,

the processor refers to target external environment information to estimate a first estimated room temperature from a target state by using the room temperature model, the target external environment information indicating the target state, the target state being an outdoor state during the target period, the first estimated room temperature being the room temperature in the target period,

the processor uses the room temperature change model to estimate a change in the room temperature in the target affected period and to use the change in the room temperature to estimate a second estimated room temperature, the second estimated room temperature being an affected room temperature that is a room temperature in the target affected period; and

the processor integrates the first estimated room temperature and the second estimated room temperature to generate an estimated result of the room temperature in the target period.

5. The indoor-temperature estimation apparatus according to claim 4 , wherein,

the target affected period is a period during which the temperature control device is turned on and a predetermined period after the temperature control device is turned off, and

the target unaffected period is a period other than the target affected period.

6. The indoor-temperature estimation apparatus according to claim 1 , wherein the temperature control device is an air conditioner that conditions indoor air.

7. An indoor-temperature estimation apparatus comprising:

a processor to execute a program; and

a memory to store the program which, when executed by the processor, performs processes of,

referring to operation plan information and specifying a target affected period and a target unaffected period, the operation plan information indicating an operation plan of a temperature control device controlling room temperature during a target period during which room temperature is estimated, the room temperature being indoor temperature, the target affected period being a period during which the room temperature is affected by the temperature control device in the target period, the target unaffected period being a period during which the room temperature is not affected by the temperature control device in the target period;

referring to target external environment information indicating a target state to estimate a first estimated room temperature from the target state by using a room temperature model, the target state being a state of an outdoor during the target period, the first estimated room temperature being the room temperature in the target period, the room temperature model indicating a relationship between the state and the room temperature;

referring to a room temperature change model to estimate a change in the room temperature caused by the temperature control device, and uses the estimated change in the room temperature to estimate a second estimated room temperature, the second estimated room temperature being the room temperature in the target affected period;

integrating the first estimated room temperature and the second estimated room temperature to generate an estimated result of the room temperature in the target period; and

controlling the temperature control device to adjust the room temperature during the target period based on the estimated result.

8. The indoor-temperature estimation apparatus according to claim 7 , wherein,

the target affected period is a period during which the temperature control device is turned on and a predetermined period after the temperature control device is turned off, and

the target unaffected period is a period other than the target affected period.

9. The indoor-temperature estimation apparatus according to claim 7 , wherein the processor specifies a learning affected period and a learning unaffected period from operation history information indicating an operation history of the temperature control device in a learning period during which learning is performed, the learning affected period being a period during which the room temperature is affected by the temperature control device in the learning period, the learning unaffected period being a period during which the room temperature is unaffected by the temperature control device in the learning period;

the processor generates a room temperature model in the learning unaffected period from room temperature history information, by learning external environment information and by learning room temperature in the learning unaffected period, the room temperature history information indicating a history of learning room temperature, and the external environment information indicating an outdoor environment refers to room temperature history information indicating a history of learning room temperature and learning external environment information indicating environment a learning state and learns the learning state and the learning room temperature in the learning unaffected period, to generate the room temperature model, the learning room temperature being the room temperature in the learning period, the learning state being the state during the learning period,

the processor refers to the learning external environment information and estimates a learning temporary room temperature by using the room temperature model, the learning temporary room temperature being the room temperature estimated without an effect of the temperature control device in a same period as the learning affected period, and

the processor generates a room temperature change model, in the learning affected period, by using refers to the room temperature history information and the operation history information and by learning the learn the learning room temperature and the learning temporary room temperature in the learning affected period, the to generate a room temperature change model indicating a change in the room temperature caused by the temperature control device.

10. The indoor-temperature estimation apparatus according to claim 9 , wherein,

the learning affected period is a period during which the temperature control device is turned on and a predetermined period after the temperature control device is turned off, and

the learning unaffected period is a period other than the learning affected period.

11. The indoor-temperature estimation apparatus according to claim 10 , wherein,

the processor generates, as the room-temperature-change model:

an on-state room temperature change model that is generated by learning a temperature difference between the learning temporary room temperature at the time the temperature control device is turned on and a set temperature of the temperature control device, and the learning room temperature in time-series after the temperature control device is turned on, to indicate a change in the room temperature from the time the temperature control device is turned on to the time the temperature control device is turned off; and

an off-state room temperature change model that is generated by learning a temperature difference between the learning temporary room temperature at a time the temperature control device is turned off and the learning room temperature at the time the temperature control device is turned off, and the learning room temperature in time-series after the temperature control device is turned off, to indicate a change in the room temperature from a time the temperature control device is turned off until the predetermined period passes.

12. The indoor-temperature estimation apparatus according to claim 7 , wherein the temperature control device is an air conditioner that conditions indoor air.

13. A non-transitory computer-readable medium that stores therein a program that causes a computer to execute processes of:

specifying a learning affected period and a learning unaffected period from operation history information indicating an operation history of a temperature control device controlling room temperature in a learning period, the room temperature being indoor temperature, the learning period being a period during which learning of the room temperature is performed, the learning affected period being a period during which the room temperature is affected by the temperature control device in the learning period, the learning unaffected period being a period during which the room temperature is unaffected by the temperature control device in the learning period;

generating a room temperature model in the learning unaffected period from room temperature history information by learning external environment information and by learning room temperature in the learning unaffected period, the room temperature history information indicating a history of learning room temperature, and the external environment information indicating an outdoor environment;

estimating a learning temporary room temperature by using the room temperature model, the learning temporary room temperature being the room temperature estimated without an effect of the temperature control device in a same period as the learning affected period;

generating a room temperature change model, in the learning affected period, by using the room temperature history information and the operation history information and by learning the learning room temperature and the learning temporary room temperature in the learning affected period, the room temperature change model indicating a change in the room temperature caused by the temperature control device; and

controlling the temperature control device to adjust the room temperature during a target period based on the room temperature change model.

14. A non-transitory computer-readable medium that stores therein a program that causes a computer to execute processes of:

referring to operation plan information and specify a target affected period and a target unaffected period, the operation plan information indicating an operation plan of a temperature control device controlling room temperature during a target period during which room temperature is estimated, the room temperature being indoor temperature, the target affected period being a period during which the room temperature is affected by the temperature control device in the target period, the target unaffected period being a period during which the room temperature is not affected by the temperature control device in the target period;

estimating a first estimated room temperature from a target state by using target external environment information and a room temperature model, the target state being an outdoor state during the target period, the first estimated room temperature being the room temperature in the target period, the room temperature model indicating a relationship between the target state and the room temperature;

estimating, using a room temperature change model, a change in the room temperature in the target affected period, the room temperature change model indicating a change in the room temperature caused by the temperature control device, and using the change in the room temperature to estimate a second estimated room temperature, the second estimated room temperature being an affected room temperature that is a room temperature in the target affected period;

integrating the first estimated room temperature and the second estimated room temperature to generate an estimated result of the room temperature in the target period; and

controlling the temperature control device to adjust the room temperature during the target period based on the estimated result.

15. An indoor-temperature estimation method comprising:

specifying a learning affected period and a learning unaffected period from operation history information indicating an operation history of a temperature control device controlling room temperature in a learning period during which learning is performed, the room temperature being indoor temperature, the learning affected period being a period during which the room temperature is affected by the temperature control device in the learning period, the learning unaffected period being a period during which the room temperature is unaffected by the temperature control device in the learning period;

generating a room temperature model in the learning unaffected period from room temperature history information, by learning external environment information and by learning room temperature in the learning unaffected period, the room temperature history information indicating a history of learning room temperature, and the external environment information indicating an outdoor environment;

estimating a learning temporary room temperature by using the room temperature model, the learning temporary room temperature being the room temperature estimated without an effect of the temperature control device in a same period as the learning affected period;

generating a room temperature change model, in the learning affected period, by using the room temperature history information and the operation history information and by learning the learning room temperature and the learning temporary room temperature in the learning affected period, the room temperature change model indicating a change in the room temperature caused by the temperature control device; and

controlling the temperature control device to adjust the room temperature during a target period based on the room temperature change model.

16. An indoor-temperature estimation method comprising:

referring to operation plan information indicating an operation plan of a temperature control device controlling room temperature in a target period during which the room temperature is estimated, to specify a target affected period and a target unaffected period, the room temperature being indoor temperature, the target affected period being a period during which the room temperature is affected by the temperature control device in the target period, the target unaffected period being a period during which the room temperature is not affected by the temperature control device in the target period;

estimating a first estimated room temperature from a target state by using target external environment information and a room temperature model, the target state being an outdoor state in the target period, the first estimated room temperature being the room temperature in the target period, the room temperature model indicating a relationship between the state and the room temperature;

estimating, using a room temperature change model, a change in the room temperature in the target affected period the room temperature change model indicating a change in the room temperature caused by the temperature control device, and using the change in the room temperature to estimate a second estimated room temperature, the second estimated room temperature being an affected room temperature that is a room temperature in the target affected period;

integrating the first estimated room temperature and the second estimated room temperature to generate an estimated result of the room temperature in the target period; and

controlling the temperature control device to adjust the room temperature during the target period based on the room temperature change model.

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Continuity (1)

References Cited (17)