CROSS-REFERENCE OF RELATED APPLICATIONS

This application is the U.S. National Phase under 35 U.S.C. § 371 of International Patent Application No. PCT/JP2018/001989, filed on Jan. 23, 2018, which in turn claims the benefit of Japanese Application No. 2017-065732, filed on Mar. 29, 2017, the entire disclosures of which Applications are incorporated by reference herein.

TECHNICAL FIELD

The present invention relates to an environment estimation device and an environment estimation method.

BACKGROUND ART

PTL 1 discloses a technique of recognizing a vertical temperature distribution in a building such as a warehouse to allow products, for which appropriate storage temperature has been set, to be managed at ordinary temperature as much as possible.

CITATION LIST

Patent Literature

PTL 1: Japanese Unexamined Patent Application Publication No. 2010-112605

SUMMARY OF THE INVENTION

Technical Problem

It is difficult to have a target environmental state at a given position in a space. For example, in the case of air-conditioning a space by an air conditioner, the air-conditioning is performed based on the temperature or humidity detected by a sensor included in the air conditioner. To set a target temperature or a target humidity at a position where no sensor is located in the space, the temperature at the position where no sensor is located needs to be estimated.

The present invention provides an environment estimation device and an environment estimation method that can estimate an environmental state at a given position in a space.

Solution to Problem

An environment estimation device according to an aspect of the present invention includes: an obtainment unit configured to obtain an operation state of at least one appliance provided in a space and environmental information inside the space; a generation unit configured to generate, based on the operation state obtained and the environmental information inside the space obtained, a numerical fluid dynamic model including, as a variation parameter, a boundary variable corresponding to the environmental information inside the space at a boundary between inside the space and outside the space; an estimation unit configured to estimate a three-dimensional environmental distribution inside the space, based on the numerical fluid dynamic model generated; a determination unit configured to change, by varying the boundary variable from an initial value, first environmental information in a specific region of the three-dimensional environmental distribution estimated, and determine, as an object boundary variable, the boundary variable at a time when a difference between the first environmental information and second environmental information in the specific region included in the environmental information inside the space obtained is within a predetermined range; and a correction unit configured to correct the numerical fluid dynamic model, by fixing the variation parameter of the numerical fluid dynamic model at the object boundary variable determined.

An environment estimation method according to an aspect of the present invention includes: obtaining an operation state of at least one appliance provided in a space and environmental information inside the space; generating, based on the operation state obtained and the environmental information inside the space obtained, a numerical fluid dynamic model including, as a variation parameter, a boundary variable corresponding to the environmental information inside the space at a boundary between inside the space and outside the space; estimating a three-dimensional environmental distribution inside the space, based on the numerical fluid dynamic model generated; changing, by varying the boundary variable from an initial value, first environmental information in a specific region of the three-dimensional environmental distribution estimated, and determining, as an object boundary variable, the boundary variable at a time when a difference between the first environmental information and second environmental information in the specific region included in the environmental information inside the space obtained is within a predetermined range; and correcting the numerical fluid dynamic model, by fixing the variation parameter of the numerical fluid dynamic model at the object boundary variable.

Advantageous Effect of Invention

The environment estimation device and environment estimation method according to an aspect of the present invention can estimate an environmental state at a given position in a space.

