Satisfaction calculation device, satisfaction calculation method, and computer readable medium

Patent metadata

Field	Value
Publication number	US-2025067457-A1
Application number	US-202418944070-A
Country	US
Kind code	A1
Filing date	Nov 12, 2024
Priority date	Jun 3, 2022
Publication date	Feb 27, 2025
Grant date	—

Abstract

A satisfaction calculation device (10) calculates satisfaction with an air quality expressing an air environment of a space. A specific enthalpy calculation unit (110) acquires a temperature and a humidity of the space and calculates a specific enthalpy of the space. An air quality satisfaction calculation unit (120) acquires a carbon dioxide concentration of the space, decides a constant that takes a different value in accordance with the carbon dioxide concentration, and calculates satisfaction with the air quality as an air quality satisfaction (31) by using the specific enthalpy and the constant. The air quality satisfaction calculation unit (120) calculates, as the air quality satisfaction (31), a value obtained by adding a second constant to a value obtained by multiplying the specific enthalpy by a first constant.

First claim

1 . A satisfaction calculation device which calculates satisfaction with an air quality expressing an air environment of a space, the satisfaction calculation device comprising:
processing circuitry to acquire a temperature and a humidity of the space and to calculate a specific enthalpy of the space, and to acquire a carbon dioxide concentration of the space, to decide a constant that takes a different value in accordance with the carbon dioxide concentration, and to calculate satisfaction with the air quality as an air quality satisfaction by using the specific enthalpy and the constant.

2 . The satisfaction calculation device according to claim 1 ,
wherein the processing circuitry decides, as the constant, a first constant by which the specific enthalpy is to be multiplied and a second constant which is to be added to a value obtained by multiplying the specific enthalpy by the first constant, and calculates, as the air quality satisfaction, a value obtained by adding the second constant to the value obtained by multiplying the specific enthalpy by the first constant.

3 . The satisfaction calculation device according to claim 2 , comprising
a memory to store a first threshold value and a second threshold value, as a threshold value of the carbon dioxide concentration, wherein the processing circuitry decides the first constant and the second constant in accordance with which case the carbon dioxide concentration corresponds to, among: a case where the carbon dioxide concentration is lower than the first threshold value; a case where the carbon dioxide concentration is equal to or higher than the first threshold value and lower than the second threshold value; and a case where the carbon dioxide concentration is equal to or higher than the second threshold value.

4 . The satisfaction calculation device according to claim 3 , comprising
a display to display a display screen showing the air quality satisfaction.

5 . The satisfaction calculation device according to claim 3 , comprising
a video output interface to display the air quality satisfaction onto an external display device.

6 . The satisfaction calculation device according to claim 3 ,
wherein the processing circuitry decides a control instruction to change control for a controller that influences the air quality.

7 . The satisfaction calculation device according to claim 6 ,
wherein the memory stores a history of control information in the controller and a history of the air quality satisfaction in the controller, and holds information of a power consumption in accordance with a control content of the controller in advance, and wherein the processing circuitry estimates a change amount of the air quality satisfaction resulting from control by the controller, from the history of the control information in the controller and the history of the air quality satisfaction, per control content for the controller, and decides a control content that can be achieved with a smallest power consumption increase, as the control instruction, among control contents that improve the air quality satisfaction from a current state by combination of the change amount of the air quality satisfaction with a power consumption of when the control contents are practiced.

8 . The satisfaction calculation device according to claim 6 ,
wherein the memory stores a history of control information in the controller, a history of the air quality satisfaction, and a history of power consumption information in the controller, and wherein the processing circuitry estimates a change amount of the air quality satisfaction caused by the control instruction, and a power consumption increase caused by the control instruction, by using the history of the control information, the history of the air quality satisfaction, and the history of the power consumption information, and decides a control content that can be achieved with a smallest power consumption increase, as the control instruction, among control contents that improve the air quality satisfaction from a current state.

9 . The satisfaction calculation device according to claim 7 ,
wherein, in a situation where a manipulation is inputted to the controller, the satisfaction calculation device does not decide the control instruction for a device to which the manipulation is inputted in the controller, and decides the control instruction for a device to which a manipulation is not inputted in the controller.

10 . The satisfaction calculation device according to claim 1 , comprising:
a subjective evaluation input interface to accept input of a subjective evaluation about the air quality satisfaction, wherein the processing circuitry generates a correction term to be used for calculating the air quality satisfaction on a basis of the subjective evaluation.

11 . The satisfaction calculation device according to claim 10 ,
wherein the processing circuitry generates the correction term by a multiple regression analysis technique.

12 . The satisfaction calculation device according to claim 10 ,
wherein the processing circuitry generates the correction term by a machine learning technique.

13 . A satisfaction calculation method employed by a satisfaction calculation device which calculates satisfaction with an air quality expressing an air environment of a space, the satisfaction calculation method comprising:
acquiring a temperature and a humidity of the space and calculating a specific enthalpy of the space; and acquiring a carbon dioxide concentration of the space, deciding a constant that takes a different value in accordance with the carbon dioxide concentration, and calculating satisfaction with the air quality as an air quality satisfaction by using the specific enthalpy and the constant.

14 . A non-transitory computer readable medium storing a satisfaction calculation program employed by a satisfaction calculation device which calculates satisfaction with an air quality expressing an air environment of a space, the satisfaction calculation program comprising:
a specific enthalpy calculation process of acquiring a temperature and a humidity of the space and calculating a specific enthalpy of the space; and an air quality satisfaction calculation process of acquiring a carbon dioxide concentration of the space, deciding a constant that takes a different value in accordance with the carbon dioxide concentration, and calculating satisfaction with the air quality as an air quality satisfaction by using the specific enthalpy and the constant.

Assignees

• Mitsubishi Electric Corp
• Univ Waseda

Inventors

• Hamada Kazuki
• Takahashi Noriko
• Hashimoto Masanori
• Tanabe Shinichi
• Nagashima Hiroaki
• Fukawa Yuta

Classifications

• F24F11/52

  Indication arrangements, e.g. displays · CPC title

• F24F2110/10

  Temperature · CPC title

• F24F2110/70

  Carbon dioxide · CPC title

• F24F2140/60

  Energy consumption · CPC title

• F24F2110/20

  Humidity · CPC title