公开(公告)号：US20230157629A1

公开(公告)日：2023-05-25

申请号：US17632630

申请日：2021-06-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayuki NISHIKAWA ,  Seiya HIGUCHI ,  Yu SAKATA ,  Masahiro TANIKAWA ,  Kyohei KOIZUMI

IPC: A61B5/00 ,  F24F11/66

CPC classification number: A61B5/4809 ,  F24F11/66 ,  F24F2120/12

Abstract: A sleep onset determination method includes: detecting a light-out time that is a time at which illuminance in a room becomes less than or equal to a predetermined value; storing the light-out time detected in the detecting of the light-out time and a time period including the light-out time detected; and determining whether a user fell asleep at a currently detected light-out time, based on the light-out time and the time period stored in the storing of the light-out time.

公开(公告)号：US20240176002A1

公开(公告)日：2024-05-30

申请号：US18551796

申请日：2023-02-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Seiya HIGUCHI ,  Masahiro ISHII ,  Hiroki URABE

IPC: G01S11/06 ,  G10L13/02 ,  H04B17/318

CPC classification number: G01S11/06 ,  G10L13/02 ,  H04B17/318

Abstract: A person detection system includes an obtainer and a processing unit. The obtainer obtains a signal strength of a radio wave transmitted by each of a plurality of transmitters and received by an antenna. The processing unit performs a detection process of detecting whether a person is present in a vicinity of the antenna, based on the signal strengths obtained by the obtainer. Each of the plurality of transmitters is classified into any one of a plurality of groups according to a position of the transmitter with respect to the antenna. In the detection process, the processing unit detects that a person is present in the vicinity of the antenna when each of the signal strengths obtained by the obtainer regarding, among the plurality of transmitters, two or more transmitters deviates from a normal range.