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HF/UHF 멀티밴드 RFID 리더의 SiP 설계 및 구현
안광덕(Kwangdek An),이경일(Kyeong-il Yi),김지곤(Jigon Kim),조정현(Junghyun Cho),김시호(Shiho Kim) 대한전자공학회 2008 電子工學會論文誌-SD (Semiconductor and devices) Vol.45 No.10
UHF 대역과 13.56㎒를 동시에 지원하는 단일 패키지의 Multi band RFID 리더를 설계하고 SiP (System in Package)로 구현하였다. 제안된 리더 시스템은 UHF 대역에서 많이 사용되는 EPC Class1 Gen.2 표준과 HF대역인 13.56㎒에서 사용하는 ISO14443 A/B, ISO15693 프로토콜을 지원하고, RISC 코어에 탑재된 내장형 S/W에 의하여 동작 모드를 선택하도록 설계되었다. 제작된 시스템은 40㎜ × 40㎜, 4 layer의 SiP 위에 구성되어 있으며 3.3V의 단일 공급전압으로 최대 210㎃의 전류 소모를 통해 13.56㎒의 경우 최대 5㎝, UHF 대역의 경우 최대 20㎝ 인식거리를 실현하였다. We have proposed a UHF/HF multi-band RFID reader, and have implemented it into a system in a package(SiP). The proposed SiP RFID reader has been designed to support both for EPCgloabal Class1 Generation2 protocol of UHF band, and 13.56㎒ RFID protocols of ISO14443 A/B type, and ISO15693 standards. The operating mode is controlled by embedded RISC core, and the mode can be selected by users. The area of implemented SiP is 40㎜ × 40㎜ with 4 metal layers. The implemented reader SiP operates at single supply voltage of 3.3V. The maximum current consumption is 210㎃. The operating distances are 5㎝ for 13.56㎒ modes, and 20㎝ for UHF mode.
신경망을 적용한 지체장애인을 위한 근전도 기반의 자동차 인터페이스 개발
곽재경(Jaekyung Kwak),전태웅(Taewoong Jeon),박흠용(Humyong Park),김성진(Sungjin Kim),안광덕(Kwangdek An) 한국IT서비스학회 2008 한국IT서비스학회지 Vol.7 No.2
As the computing landscape is shifting to ubiquitous computing environments, there is increasingly growing the demand for a variety of device controls that react to user’s implicit activities without excessively drawing user attentions. We developed an EMG-based car interface that enables the physically handicapped to drive a car using their functioning peripheral nerves. Our method extracts electromyogram signals caused by wrist movements from four places in the user’s forearm and then infers the user’s intent from the signals using multi-layered neural nets. By doing so, it makes it possible for the user to control the operation of car equipments and thus to drive the car. It also allows the user to enter inputs into the embedded computer through a user interface like an instrument LCD panel. We validated the effectiveness of our method through experimental use in a car built with the EMG-based interface.