Non-contact stress monitoring system with microwave radar capable of simultaneous detection of respiration and heart rates

2014 Fiscal Year Final Research Report

• Project/Area Number: 24510228
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: MATSUI Takemi 首都大学東京, システムデザイン研究科, 教授 (50404934)
• Co-Investigator(Kenkyū-buntansha): HASHIZUME Ayako 首都大学, 東京システムデザイン研究科, 助教 (70634327)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ストレス評価

Outline of Final Research Achievements

We have developed “Stress measuring chair” and evaluated its efficiency. The micro Doppler radar (24GHz, 7mW) with planar patch antenna was attached to the back of the chair. The radar detects tiny movements on the body surface caused by heartbeat in non-contact way and from its RR intervals, we calculated HVR which indicates autonomic activities. In the test with a help of a psychiatrist, patients suffering from depression and normal subjects were instructed to relax on the chair with natural sounds and images. As the result, parasympathetic activities did not show apparent increase among the patients while it significantly increased in the normal control subjects. We were successfully able to practice primary stress monitoring by only inducing relax state.

Free Research Field

マイクロ波レーダーを用いた生体計測に関連する医療工学