US 12,228,894 B2
Smart window control device, smart window control method, and smart window control program
Kenta Watanabe, Osaka (JP); Akiko Ogasawara, Osaka (JP); and Atsushi Kishi, Osaka (JP)
Assigned to NITTO DENKO CORPORATION, Ibaraki (JP)
Appl. No. 17/428,116
Filed by Nitto Denko Corporation, Ibaraki (JP)
PCT Filed Feb. 5, 2020, PCT No. PCT/JP2020/004434
§ 371(c)(1), (2) Date Aug. 3, 2021,
PCT Pub. No. WO2020/162514, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 2019-021863 (JP), filed on Feb. 8, 2019; and application No. 2020-013263 (JP), filed on Jan. 30, 2020.
Prior Publication US 2022/0057761 A1, Feb. 24, 2022
Int. Cl. G05B 13/04 (2006.01); E06B 9/24 (2006.01); F24F 11/64 (2018.01); G02F 1/01 (2006.01)
CPC G05B 13/048 (2013.01) [E06B 9/24 (2013.01); F24F 11/64 (2018.01); G02F 1/0121 (2013.01); E06B 2009/2464 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A smart window control device that controls transmittance of a smart window provided as a window of a space where a temperature is controlled by an air conditioning system in accordance with a set temperature, the smart window control device comprising:
a processor; and
a memory storing program instructions that cause the processor to:
obtain a predicted value of external environment information about outside of the space in an interval between a first time and a second time, the second time being when a predetermined time period has elapsed from the first time;
calculate a plurality of transition data of the temperature of the space in the interval based on the predicted value of the external environment information in the interval and a plurality of transmittance patterns, each of the plurality of transmittance patterns representing a transition pattern of the transmittance, wherein each of the plurality of transition data of the temperature of the space covers an entire length of the interval between the first time and the second time; and
control the transmittance of the smart window by selecting a transmittance pattern among the plurality of transmittance patterns so that a difference between the set temperature and a temperature obtained based on transition data calculated based on the selected transmittance pattern is minimized.