Research and development of near-field coupling intra-body communication for universal interface

2014 Fiscal Year Final Research Report

• Project/Area Number: 23246073
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: KADO Yuichi 京都工芸繊維大学, 工芸科学研究科 電気電子工学系, 教授 (90500223)
• Co-Investigator(Kenkyū-buntansha): SHIMASAKI Hitoshi 京都工芸繊維大学, 大学院工芸科学研究科, 准教授 (20226202) ; SHIMASAKI Hitoshi 京都工芸繊維大学, 大学院工芸科学研究科, 准教授 (90293985)
• Co-Investigator(Renkei-kenkyūsha): SHINAGAWA Mitsuru 法政大学, 理工学部応用情報工学科, 教授 (40597712)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 電界通信 / 人体近傍通信 / ボディエリアネットワーク / ヒューマンインターフェイス

Outline of Final Research Achievements

We proposed a near-field coupling communication (NFCC) system composed of not only transceivers on the body (wearable TRX) but also transceivers embedded in floors, PCs, equipments, etc (embedded TRX). Therefore, our system broadens the fields of application. To estimate the transmission quality of our system, we measured the packet error rates (PER) between a wearable TRX and an embedded TRX. We also developed an electrically isolated probe consisting of an electrical-to-optical (E/O) converter and an optical-to-electrical (O/E) converter. It is demonstrated that the measurement system using an E/O and O/E conversion probe is effective to achieve a stable communication system. Based on the experimental and simulated results, an equivalent circuit of the NFCC system was proposed. From the analytical model, we identified the cause of the interference problem and quality deterioration. We also found that weakening the effects of this factor was important to achieve a stable NFCC link.

Free Research Field

通信・ネットワーク工学