For the life where privacy is protected and people can live safely, securely and comfortably
すべての人々のプライバシー守られ，安心・安全で快適に暮らすことができる社会を目指して
Social implementation of IoT technology, in which IoT devices such as smartphone and various mobile sensors are all connected to Internet, has rapidly progressed, with the introduction of high-speed and high-capacity wireless communication networks including 5G and beyond, and sensor networks. We challenge sensing human and human vital sings with wireless technology such as sub-7/60/78 GHz Radars and Wi-Fi networks, applying space-time and frequency domain signal processing and machine learning (AI).
We keep climbing mountain to find our limits of realization of the society where people’s privacy is protected and their lives are more secure, safe, and comfortable in their daily lives, through human and vital signs sensing with radio wave.
近年5G and beyond等の高速・大容量情報通信ネットワークやセンサネットワークの導入が進み，スマートフォンや様々なモバイルセンサの普及とともに，あらゆるモノがネットワークにつながるIoT技術の社会実装が進んでいます．戸田研究室では，sub-7/60/78 GHz帯のセンサやレーダ，Wi-Fiネットワークを用いて，時空間・周波数領域信号処理や，ディープラーニングをはじめとする機械学習(AI)を応用し，人や人の生体情報センシングに関する研究に取り組んでいます．
人々の日々の生活の中で，電波による人の行動やバイタルサインの見守りによって，プライバシーも守られながら，より安心・安全で快適な生活を送ることができる，そのような社会の実現に貢献できるよう日々チャレンジし続けています．
For academic research and paper, the three pillars of originality, availability, reliability, and recently usefulness has also been required. Students struggle with various research topics as a member of a team, using both logical approach (development of new signal processing and algorithm) and experimental approach (implementation into real environment), and develop “theoretical thinking skill” through the research activities. Furthermore, they acquire “self-actualization ability” and “ability to make things done” through the experiment execution, in which they discover new knowledges and issues (“problem discovery ability”) and develop new signal processing and algorithms.
There is a limit to what one student can accomplish alone, but greater things can be achieved with working others as a team where student develop “communication skill (ability to care for others)” and “presentation skills.” Graduate student who become team leader develops “leadership skill.”
Through those activities, students can envision their career development after graduation and engage in research with their motivation. Students are also acquiring ability to develop their own careers by themselves after graduation, with the skills they have acquired through their research activities.
研究や学術論文では新規性 (originality)，有効性 (availability)，信頼性 (reliability)の3本柱の他に，最近では有用性 (usefulness)も評価対象とされています．このようなところで学生は，研究課題 (チーム)毎に論理的アプローチ (新しい信号処理やアルゴリズムの開発)と実験的アプローチ (実環境への応用)を車の両輪として研究活動に取り組み，新しい信号処理やアルゴリズムの開発を通して「理論的思考力」を養います．さらに実験実施を通して「自己実現力」や「実行力」を身に付け，そこに新たな知見や課題を発見し（「課題発見能力」），また新しい信号処理やアルゴリズムを考えます．
そこでは一人で達成できることにはある程度限界があり，チームワークで取り組むことによりより大きなことを達成できることから「コミュニケーション力（相手を思いやる力）」や「プレゼンテーション能力」、チームリーダとなる大学院生は「リーダシップ力」を養います．
このような中で学生は，卒業・修了後のキャリア形成を思い描き，モチベーションをもって研究に取り組むことができます．そして研究活動を通して身に付けた力をもって卒業・修了後のキャリアを自ら開拓する力を身に付けてゆくことになります．
Research/研究
The number of elderly households, especially households where elderly people live alone, has rapidly increased in recent years, and the demand for monitoring the elderly at home is increasing. On these circumstances, the Covid-19 pandemic has occurred, and flu also has become prevalent regardless of previous epidemic seasons, and expectations has accelarated for non-contact health monitoring. On the other hand, frequency has been running out, due to the spread of high-speed with large-capacity of wireless communication and new radio wave application fields. Thus, release of the wide frequency-band in the millimeter wave has been progressing, from the perspective of promoting use of the unused millimeter wave frequency bands. Moreover, millimeter waves are compatible with home monitoring and healthcare at home, due to the high frequency, broadband properties, and low privacy invasion. Furthermore, in recent years, millimeter-wave devices have become available at low price, that enable high-speed wireless comumnications with large-capacity and high-resolution analysis. From these background, we has been working on research of non-contact human vital signs sensing based on radar in the millimeter wave band (60/79 GHz band), and Wi-Fi network (802.11ac/ad) in the Sub-7/60 GHz band.
高齢者世帯，特に高齢者の独居世帯が近年急増しており，家庭内での見守りに対する要求が高まっています．このような中，新型コロナウィルスのパンデミックが発生し，またインフルエンザも従来の季節に関係なく流行するようになり，非接触ヘルスモニタリングへの期待が加速しています．他方，ワイヤレス通信の高速大容量化や新しい電波応用分野の普及から，周波数が枯渇しつつあり，ミリ波の未利用周波数帯の利用促進の観点から，ミリ波帯の電波開放が進んでいます．さらにミリ波は，高周波や広帯域性さらに低プライバシー侵害性の観点から，家庭内での見守りやヘルスケアと相性が良く，さらに近年，高速大容量通信や高分解能解析を可能にするミリ波帯デバイスが安価に流通するようになってきました．このような背景から，我々はミリ波帯（60/79 GHz帯）のレーダやSub-7/60 GHz帯のWi-Fiネットワーク (802.11ac/ad)を用いて人の非接触バイタルサイン（生体情報）のセンシングに取り組んでいます．
Human Activities and Vital Sgns Sensing based on mm-Wave (60/79 GHz band) Radar
ミリ波 (60/79 GHz帯)レーダを用いた人の行動やバイタルサインのモニタリング
Remote Sensing of Human Vital Signs (e.g., Respiration, Heart Rate, and Blood Pressure) with mm-Wave Radar
ミリ波レーダを用いた非接触バイタルサイン（呼吸，心拍，血圧）センシング
Vital Signs Monitoring Mobile Robot based on mm-Wave Radar
ミリ波レーダを用いた非接触バイタルサイン見守り移動ロボット
Remote Sensing of Human Position and Posture with mm-Wave Radar
ミリ波レーダを用いた人の位置や姿勢の非接触見守りセンシング
<最近の論文>
Yaokun Hu, Xuanyu Peng and Takeshi Toda, "A novel remote-tracking heart rate measurement method based on stepping motor and mm-Wave FMCW radar," in IEICE Transactions on Communications, 30 Jan. 2024, doi: 10.23919/transcom.2023EBP3143.(Early Access in IEEE Xplore)
Yaoku Hu, Xuanyu Peng and Takeshi. Toda, "A study of vital signs monitoring mobility robot based on mm-wave FMCW radar," in IEICE Communications Express, 12 Dec. 2023, doi: 10.23919/comex.2023XBL0119. (Early Access in IEEE Xplore)
彭璇宇, 胡尭坤, 戸田健, "A Basic Study of Indoor Human Posture Classification Based on 3D MIMO mm-Wave Radar with the Small Number of Elements," 2024年信学総大, B-19-08, 2024年3月
Remote Sensing of Human Activities and Vital Signs based on Sub-7/60 GHz band Wi-Fi Network (802.11ac/ad)
Sub-7/60 GHz帯Wi-Fiネットワーク (802.11ac/ad)を用いた人の行動やバイタルサインの非接触センシング
Remote Vital Signs Sensing with Sub-7/60 GHz band Wi-Fi Network
Sub-7/60 GHz帯Wi-Fiネットワークを用いた非接触バイタルサインセンシング
Remote Sensing of Human Location and Activities based on Sub-7/60 GHz band Wi-Fi Network
Sub-7/60 GHz帯Wi-Fiネットワークを用いた人の位置や姿勢の非接触センシング
