公开(公告)号：US12016793B2

公开(公告)日：2024-06-25

申请号：US17705769

申请日：2022-03-28

Applicant: DENSO CORPORATION

Inventor： Takashi Matsuoka ,  Takuya Kataoka ,  Masaru Kakizaki ,  Taiji Kawachi ,  Yuuki Shimizu ,  Hideki Seki

IPC: B60N2/56 ,  A61F7/00 ,  B60N2/00

CPC classification number: A61F7/0053 ,  B60N2/002 ,  B60N2/565 ,  B60N2/5657 ,  A61F2007/0093

Abstract: A heating and cooling stimulation device includes a stimulation supply unit configured to supply hot stimulation and cold stimulation to a subject; an estimation unit configured to estimate a fatigue level of the subject; and a control unit configured to control an operation of the stimulation supply unit so as to supply the hot stimulation and the cold stimulation alternately to the subject in accordance with the fatigue level estimated by the estimation unit. The control unit controls the operation of the stimulation supply unit such that an amount of the cold stimulation received by the subject increases as the fatigue level estimated by the estimation unit becomes higher.

公开(公告)号：US10905338B2

公开(公告)日：2021-02-02

申请号：US15584059

申请日：2017-05-02

Applicant: DENSO CORPORATION

Inventor： Koki Futatsuyama ,  Mitsuyuki Kobayashi ,  Taiji Kawachi ,  Hiroshi Yamakita

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/024

Abstract: A pulse wave measuring device checks whether amplitude of a pulse signal satisfies a gain changing condition and, when the gain changing condition is satisfied, changes a gain. The pulse wave measuring device includes an amplitude storing unit and a mode progressing unit. The amplitude storing unit stores plural gain changing conditions, to which a series of order are assigned, respectively. A mode progressing unit 15 changes the gain changing condition to the next-ordered gain changing condition upon determination that the mode progress condition is satisfied. The gain changing condition is satisfied in case that Y1 or more number of pieces of X1 amplitudes are larger than an upper limit value U1 or smaller than a lower limit value L1. X1 is increased as the order of the set gain changing condition is higher.

公开(公告)号：US09814396B2

公开(公告)日：2017-11-14

申请号：US15289263

申请日：2016-10-10

Applicant: DENSO CORPORATION

Inventor： Kouki Futatsuyama ,  Taiji Kawachi ,  Tsuyoshi Nakagawa

IPC: A61B5/024 ,  A61B5/02 ,  A61B5/0205 ,  A61B5/00 ,  A61B5/021

CPC classification number: A61B5/02007 ,  A61B5/0205 ,  A61B5/02108 ,  A61B5/024 ,  A61B5/02416 ,  A61B5/6824 ,  A61B5/7239

Abstract: In a pulse wave signal processor, a first filter attenuates a frequency component in an acquired pulse wave signal or in a differentiated pulse wave signal, and the attenuated frequency component is more than or equal to a first frequency. A second filter attenuates a frequency component in the acquired pulse wave signal, and the attenuated frequency component is less than the first frequency and more than or equal to a second frequency. A characteristic-point extractor extracts a characteristic point that exists in each single pulse of the pulse wave signal filtered by the second filter, and a signal separator partitioning the pulse wave signal or the differentiated signal filtered by the first filter into sections such that each section includes one of the extracted characteristic points. The partitioned sections are overlapped such that the characteristic points are coincident with each other, and arithmetically averaged.