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Papers - Mitsugi, Jin

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Building a Visibility Platform:EPCIS adaptors facilitate the exchange of information

Jin MITSUGI, Keita MIYAZAKI, Yuki SATO

RFID Journal 2013.02

Research paper (scientific journal), Single Work

A network architecture for fast retrieval of user memory data from sensor RF tags

Igarashi Yuki, Miyazaki Keita, Sato Yuki, Mitsugi Jin

184 - 190 2013

In this paper, a network architecture for fast retrieval of user memory data of RF tag is proposed. The architecture features a network-based resolving of user memory layout in RF tag and an optimization of reading block according to application requests and the characteristics of interrogator. We implemented the proposed network architecture and evaluated the performance with commercial interrogator and commercial RF tags both of which are conformal to the fundamental specification of ISO/IEC 18000-6 Type C. The experimental and analytical evaluation reveals that the network-based memory resolving is effective particularly for interrogators which have large inventory overhead in a reading of user memory data. In our experiment, 3.3 times read speed up is achieved with the network-based resolving. The optimization of reading block is effective regardless of the protocol implementation of interrogator. We achieve 2.5 times speed up in the experiment in three sensor data reading from RF tag which has 2K bits memory. © 2013 IEEE.

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名もない展開型宇宙アンテナの進化”

MITSUGI JIN

AIAA Space Review Japan 2013

Research paper (other academic), Single Work

EPC共通基盤の構築と農産物コマース/トレーサビリティシステム実証実験

三次　仁、宮崎　圭太、佐藤　友紀

流通とシステム 26 ( 7 ) 1-6 2013

Research paper (scientific journal), Single Work

NFC/EPCを使った地域産品災害時支援物資のトレーサビリティシステム

三次、稲葉、田代、松枝

自動認識 26 ( 7 ) 2013

Research paper (scientific journal), Single Work

双方向服薬支援システムの開発に向けて

Shiori Suzuki, Miyuki Ozawa, Jin Mitsugi

医療情報学会春季大会 (医療情報学会) 2013

Research paper (conference, symposium, etc.), Joint Work

Regional purchase orders dissemination and shipments aggregation of agricultural products with interworking EPC network and EDI system

Jin Mitsugi, Yuki Sato, Takehiro Yokoishi, Takashi Tashiro, Tomohiko Eda, Keiji Sato and Yasurou Kishi

IEEE RFID-TA (IEEE) 1 - 6 2013

Research paper (international conference proceedings), Accepted

EPCglobalアーキテクチャに基づいた農産品直販情報システムの構築

Yuki Sato, Mamoru Yoshida, Keita Miyazaki, Jin Mitsugi

電子情報通信学会和文論文誌分冊D システム開発論文特集号 (電子情報通信学会) VO.J96-D ( 10 ) 276 - 283 2013

Research paper (scientific journal), Joint Work, Accepted

在宅療養患者の服薬状況はどのように把握されているのか

鈴木詩織、三次仁、村井純

情報処理学会デジタルプラクティス (情報処理学会) 4 ( ３ ) 276 - 283 2013

Research paper (scientific journal), Joint Work, Accepted

Improving medication adherence in home care using a bidirectional medication assistance system

Shiori Suzuki, Jin Mitsugi and Jun Murai

International Journal of networking science (Springer) 3 63 - 70 2013

Research paper (scientific journal), Joint Work

物理・仮想統合センサメッセージングシステム

小澤みゆき、三次仁

電子情報通信学会NS研究会 (電子情報通信学会) 113 ( 361 ) 125 - 130 2013

Research paper (conference, symposium, etc.), Joint Work

Identification of missing objects with group coding of RF tags

Sato Yuki, Igarashi Yuki, Mitsugi Jin, Nakamura Osamu, Murai Jun

95 - 101 2012

Physical objects often form a group such as objects in a shipping container. RFID enables us to identify each object and even the container itself. However, current RFID does not provide information on IDs missing from a group. This paper proposes a method to determine the unique IDs of objects missing from a group without any external database or verifier. The proposed method logically splits a group into mutually overlapped sub-groups and writes group-related information, which is generated from the unique IDs of objects in the subgroup, to RF tags' memory. When we check the integrity of a group of objects, unique IDs and group-related information of RF tags are extracted from RF tags' memory. With an iterative decoding over group-related information with the unique IDs of identified objects, missing IDs are determined. A numerical simulation reveals that the proposed method can identify 96-bit unique IDs of up to 64 objects missing from a group composed of 100 objects by writing 840-bit group-related information to each RF tag. We also examined the performance with an experiment and confirmed that we can successfully determine 16-bit IDs of up to 12 missing RF tags from a group of 20 RF tags by writing 280-bit group-related information to each RF tag. The experiment results agree well with the numerical simulation. © 2012 IEEE.

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Theory and Performance Evaluation of Group Coding of RFID tags

Yuki Sato, Jin Mitsugi, Osamu Nakamura, Jun Murai

IEEE Transactions on Automation Science and Engineering (IEEE) 10.1109/TASE.2012.2193125 (Early access) 2012

Research paper (scientific journal), Joint Work, Accepted

Theory and performance evaluation of group coding of RFID tags

Sato Yuki, Mitsugi Jin, Nakamura Osamu, Murai Jun

IEEE Transactions on Automation Science and Engineering 9 ( 3 ) 458 - 466 2012

ISSN 1545-5955

Radio frequency identification (RFID) is an automatic identification technology which identifies physical objects individually according to their unique identifiers (ID) recorded in each RFID tag. Many business processes require the integrity verification of a group of objects in addition to individual object identification. This paper proposes "group coding" of RFID tags with which we can verify the integrity of groups of objects by writing parity check data to the memory of RFID tags. It was revealed by simulations and experiments that we could determine the number of missing RFID tags up to 10 with accuracy over 99% when we write 96 bits of the checksum data to 20 RFID tags. The whole duration of group decoding measured in the experiment was approximately 2 to 3 s. The time to compute group encoding and decoding was in the order of several milliseconds and thus negligible. The RFID inventory accounts for the majority of the duration. © 2004-2012 IEEE.

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Innovative financing scheme by RFID

Inaba Tatsuya, Kokuryo Jiro, Mitsugi Jin

309 - 314 2012

This study proposes a collateral registration method of asset based lending (ABL) and evaluates parameters of supply chain management (SCM) operation that affect performance of ABL. Radio frequency identification has been deployed recently and there increases the application areas using its track and trace capability. ABL is one of them, in which company borrows money from financial service company (FSC) by using movable asset, such as inventory, as collateral. We proposed a registration method that is compatible to the current RFID standard, analyzed the SCM parameters that affect the loan condition of ABL, and summarized how companies design the SCM operation to take advantage of the financing scheme. © 2012 IEEE.

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Room occupancy determination with particle filtering of networked pyroelectric infrared (PIR) sensor data

Yokoishi Takehiro, Mitsugi Jin, Nakamura Osamu, Murai Jun

2012

Occupancy determination of a large room, such as university campus room, using pyroelectric infrared (PIR) sensors is difficult because PIR sensors are inherently insensitive to humans that are motionless and it is difficult to achieve 100% coverage even with multiple sensors. To overcome these problems, the authors propose using particle filtering of networked multiple PIR sensor data to improve the accuracy of the occupancy state determination. The particle filtering can eliminate incorrect occupancy state transition without incurring large delays. Our method is robust to the incompleteness of the coverage and accuracy. The authors performed an experiment in a campus room (15.3m×6.4m) with 4 PIR sensors to prove the validity of the proposal. The experiment shows that the proposal can improve the occupancy determination accuracy from 29.6% to 98.3%. The system has been continuously used in the university power saving project. © 2012 IEEE.

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UHF 帯 RFID における効率的な複数 RF タグエミュレーション.

神谷尚保, 三次仁, 中村修, 村井純.

電子情報通信学会論文誌 B B Vol.J94-B ( 3 ) 468–479 2011.04

Research paper (scientific journal), Single Work

Bridging UPnP and ZigBee with CoAP

Mitsugi Jin, Yonemura Shigeru, Hada Hisakazu, Inaba Tatsuya

2011

Incorporation of heterogeneous wireless sensor and actuator networks (WS&AN) is an essential challenge of web based Internet of Things (IoT) architectures. We propose to use UPnP and end-to-end HTTP communication using CoAP to bridge WS&AN and IoT system. UPnP enables automatic discovery of sensor devices which directly connect to a WS&AN via a gateway. Instead of translating WS&AN and UPnP protocols at the gateway, we propose to use CoAP in WS&AN. This provides flexible communications between sensor devices and applications. Drawback of this end-to-end Web based IoT information system is vulnerability to excessive traffics from sensor devices or from the applications because there is no authority to monitor and control traffics in the architecture. We examined the performance of our implementations to find that the transmit performance of a single sensor device could be limited by the serial communications of embedded transceiver. Excessive data requests from applications might also result in the packet loss and wasteful WS&AN congestion. If the traffic is confined within the performance limits, the implemented UPnP and ZigBee bridging using CoAP shows satisfactory performance. We can subscribe up to 16 sensor devices data with 500 msec using simple HTTP POST requests. © 2011 ACM.

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Enabling globally unique sensor ID with dual-interface RF tag

Mitsugi Jin, Hada Hisakazu, Inaba Tatsuya, Ihara Katsumasa, Kojima Goushi, Kondo Tomonori

1628 - 1631 2011

In any sensor information system, unique identification (ID) of each sensor is indispensable. Usual practices to secure uniqueness of sensor ID is to use MAC or network address or to use a proprietary ID in application layer. In pervasive computing era, it is desirable to uniquely identify a sensor with a URN regardless of types of network to which the sensor is connected. This paper proposes to embed a dual interface RF tag, which records a globally unique ID, EPC (Electronic Product Code), used in business transactions, to sensor microcontroller(MCU). The dual interface RF tag allows us to access its tag data either via RF interface and a baseband interface. This enables a sensor MCU to use EPC to uniquely identify the sensor for its whole product lifecycle. Since EPC have been only accessed through the RF interface, we developed a modified UPnP to automatically discover EPC enabled sensors through the baseband interface for various access networks. Taking advantage of the existing network RFID architecture, we can search services related to an EPC in a form of URL and also can publish and subscribe sensor data service with a standardized web service interface. This paper reports a hardware implementation of dual interface RF tag with a ZigBee transceiver. Timing requirement of RFID protocol to access RF tag's memory can be met by a software control of off-the-shelf MCU GPIO. A 96 bits EPC stored in an dual interface RF tag can be retrieved in 12.3 msec. For the automatic device discovery of an EPC enabled sensor attached to a ZigBee network, a modified UPnP is also developed. The proposal is implemented in a working prototype with 49 sensors which geographically dispersed in 3 locations which can continuously collect 181 sensor data for various applications. We also evaluated the minimum time interval to publish sensor data to find 300 msec is the shortest interval in our implementation. This interval is dominated by the communications capacity between sensor MCU and on-board transceiver chip. © 2011 IEEE.

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Bidirectional medication support system for medical staff and home care patients

Suzuki Shiori, Yokoishi Takehiro, Hada Hisakazu, Mitsugi Jin, Nakamura Osamu, Murai Jun

147 - 151 2011

We have developed a system using a combination of a multi-hop sensor network and 3G networks to support patients daily medication in home care. Each medication of a patient is represented by a sequence of close-open-close events of an off-the-shelf pill box, which are detected by a small Hall sensor. The system enables home visiting nurses to remotely monitor their patients' medication and to give feedback on the medication status to patients. This bidirectional communication between medical staff and patients is essential to motivate patients' medication and to make their experience of being taken care for at homes more comfortable. A semi-automatic message generation system helps medical staff to send feedback without spending excessive time and effort. We have been examining this system for more than three months with three subjects and found that a simple open/close sensing of an off-the-shelf pill box can provide a valuable medication history. It has also shown that the feedback system improves the rate of failure medication from 5.3% to 0.0% in the best case. © 2011 IEEE.

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