A relaxation system adapting to user´s condition-identification of relationship between massage intensity and heart rate variability

Author

Hasegawa, Yasuhisa ; Ootsuka, Takeo ; Fukuda, Toshio ; Arai, Fumihito ; Kawaguchi, Mitsuo

Author_Institution

Dept. of Micro Syst. Eng., Nagoya Univ., Japan

Volume

4

fYear

2001

fDate

2001

Firstpage

3195

Abstract

The purpose of the study is to build a relaxation system which can control a user´s body condition, changing the operation mode and intensity of the massage seat according to the user´s current condition. Heart rate is an index of human conditions which can be easily measured, and it has chaotic dynamics. We show relations between the intensity of the massage operation and two indices which express chaotic properties such as correlation dimension and Lyapunov exponent. These data are indispensable for building a feedback loop between the relaxation system and a user.

Keywords

biocontrol; chaos; discrete time systems; electrocardiography; feedback; nonlinear dynamical systems; Lyapunov exponent; body condition; chaotic dynamics; correlation dimension; heart rate variability; massage intensity; operation mode; relaxation system; user´s condition; Automatic control; Chaos; Control systems; Fatigue; Feedback loop; Heart beat; Heart rate; Human factors; Nervous system; Neurons;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics and Automation, 2001. Proceedings 2001 ICRA. IEEE International Conference on

ISSN

1050-4729

Print_ISBN

0-7803-6576-3

Type

conf

DOI

10.1109/ROBOT.2001.933110

Filename

933110