公开(公告)号：US10969479B2

公开(公告)日：2021-04-06

申请号：US16240919

申请日：2019-01-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Shoichi Iizuka ,  Takeshi Nakayama ,  Naoki Honma ,  Dai Sasakawa ,  Yukio En

IPC: G01S13/48 ,  G06F3/01 ,  G01S7/292 ,  G01S7/282 ,  G01S13/87 ,  G01S7/41 ,  G06K9/00

Abstract: There is provided an estimation device that estimates a living body orientation. The estimation device includes: transceivers that transmit transmission signals using M transmission antenna elements arranged to surround a predetermined range including a living body, and receive reception signals using N receiving antenna elements; and a circuit that, for each of M sets of N reception signals corresponding to transmitted M transmission signals, performs calculation of a characteristic quantity based on the N reception signals included in the set, the characteristic quantity with a greater value indicating a waveform having a larger amplitude and higher regularity, identifies a first transmission antenna element corresponding to a first characteristic quantity having a greatest value among M characteristic quantities by comparing the M characteristic quantities obtained by the calculation with each other, and estimates the living body orientation to indicate a predetermined direction based on the first transmission antenna element identified.