US 12,290,364 B2
Mental and physical condition estimation system, mental and physical condition estimation method, and storage medium
Kiyomi Sakakibara, Iwakura (JP); Hitoshi Yamada, Toyota (JP); Yuhei Yamaguchi, Toyota (JP); Chie Imamura, Nagoya (JP); and Keiji Hayashi, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Mar. 21, 2022, as Appl. No. 17/699,592.
Claims priority of application No. 2021-082700 (JP), filed on May 14, 2021.
Prior Publication US 2022/0361790 A1, Nov. 17, 2022
Int. Cl. A61B 5/16 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61M 21/00 (2006.01)
CPC A61B 5/165 (2013.01) [A61B 5/02405 (2013.01); A61B 5/4836 (2013.01); A61B 5/7278 (2013.01); A61M 21/00 (2013.01); A61M 2021/0044 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A mental and physical condition estimation system comprising:
a light; and
a processor configured to:
acquire, from a heart rate sensor, heart rate information related to a heart rate of a subject person;
calculate a first heart rate variability from the heart rate information, a frequency band of the first heart rate variability being within a frequency band of a very low frequency component (VLF) of the heart rate information;
calculate a second heart rate variability from the heart rate information, a frequency band of the second heart rate variability being (i) within the frequency band of the VLF of the heart rate information and (ii) lower than the frequency band of the first heart rate variability;
estimate whether the subject person is in a concentration and effort state based on whether the second heart rate variability is equal to or lower than a predetermined level,
generate a control signal, based on the first heart rate variability and the second heart rate variability, to increase concentration when the subject person is estimated to be in the concentration and effort state; and
transmit the control signal to the light, the control signal being for controlling an adjustment of the light, wherein
the light is configured to receive the control signal from the processor and, in response to receiving the control signal, adjust an illuminance of an environment of the subject person to influence a mental and physical condition of the subject person.