• 융합보안논문지
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• 제24권2호
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• pp.55-61
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• 2024

IoT 기술 발전으로 스마트 헬스케어나 스마트 의료서비스도 급격히 발전하고 있다. 이 서비스에 필요한 웨어러블 디바이스는 스마트 밴드 등의 형태로 센서, 컨트롤러로 사용되고 있다. 웨어러블 디바이스는 가능한 장시간 사용을 위해 매우 간결한 SW 로직으로 구현할 뿐만 아니라, 편의성 증진을 위해 무선 통신 프로토콜을 사용한다. 그러나 이 웨어러블 디바이스는 경량성을 추구하고 있어, 다른 정보서비스에 사용되는 단말보다 보안에 취약하다. 본 연구에서는 웨어러블 서비스의 기술적인 운영 환경을 분석, 웨어러블 디바이스에 대한 인증 정보 재사용 공격, BIAS 공격, 배터리 소진 공격, 펌웨어 공격을 식별하고, 각 보안 위협의 메커니즘을 분석하고 공격 효과를 조사하였다. 또 본 연구에서는 식별한 보안 위협에 대한 대응 방안을 제시하였다. 웨어러블 서비스를 개발할 때 본 연구에서 제안한 대응 방안을 고려한다면, 더 안전한 서비스를 구축할 수 있을 것으로 기대된다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 Ⅲ
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• pp.1561-1564
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• 2003

Intelligent Wearable Module is intelligent system that arises when a human is part of the feedback loop of a computational process like a certain control system. Applied system is mobile robot. This paper represents the mobile robot control system remote controlled by Intelligent Wearable Module. So far, owing to the development of 802.l1b technologies, lots of remote control methods through internet have been proposed. To control a mobile robot through internet and guide it under unknown environment. The information about the direction and velocity of the mobile robot feedbacks to the PDA and the PDA send new control method produced from the combination of Neuro and Hierarchical Fuzzy Algorithm

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.1633-1637
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• 2003

Existing input devices for desktop computers are not suitable for wearable computers because they are neither easy to carry nor convenient to use in a mobile working environment. Different input devices for wearable computers must be developed. In this paper, a wireless glove-based input device for wearable computers is proposed. The proposed input device consists of a pair of chording gloves. Its keys are mounted on the fingers and their chording methods are similar to those of a Braille keyboard. RF (Radio Frequency) and IrDA (Infrared Data Association) modules are used to make the proposed input device wireless. Since the Braille representation for numbers and characters is efficient and has been well established for many languages in the world, the proposed input device may be one of good input devices to computers. Furthermore, since the Braille has been used for visually impaired people, the proposed one can be easily used as an input device to computers for them.

• 정보처리학회논문지D
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• 제14D권3호
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• pp.311-318
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• 2007

임베디드 시스템 기술 발전으로 차세대 컴퓨터로서 웨어러블 컴퓨터가 등장하게 되었다 아직까지 이러한 웨어러블 컴퓨터는 하드웨어와 소프트웨어 성능의 한계로 응용에 제한을 가지고 있다. 본 연구에서는 국내에서 개발한 임베디드 웨어러블 컴퓨터에서 멀티미디어 응용 서비스가 가능하도록 하는 MPEG-4 비디오 플레이어를 구현하였다. 본 논문은 ETRI에서 개발한 손목시계형 웨어러블 컴퓨터인 WPS(Wearable Personal Station) 상에서의 MPEG-4 동영상 플레이어 구현에 대해 기술한다.

• 한국정밀공학회지
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• 제25권3호
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• pp.141-146
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• 2008

The purpose of this study is to develop the algorithm which can control muscle power assist robot especially for elderly. Recently, wearable robots for power assistance are developed by many researchers, and its application fields are also variable such as for medical or military equipment. However, there are many technical barriers to develop the wearable robot. This study suggest a control method improving performance of a wearable robot system by using a EMG signal of major muscles and a force sensor signal as command signal of system. The result of the robot Prototype efficiency experiment, the case of Maximum Isometric motion it suggest 100% power of muscle, the man need only 66% of MVIC(Maximum Voluntary Isometric Contraction) to lift 5kg dumbbell without robot assist. However the man needs only 52% of MVIC to lift 5kg dumbbell with robot assist. Therefore 20% muscle power increased with robot assist. Also, we designed light weight robot mechanism that extract the command signal verified and drive the wanted motions.

• 한국항행학회논문지
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• 제12권6호
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• pp.640-645
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• 2008

유비쿼터스 지능화 사회로 진입하면서 웨어러블 컴퓨터, 스마트 섬유, 스마트 패션 등 다양한 형태의 스마트웨어 관련 연구들이 가시화 되고 있다. 본 연구에서는 휴대성과 편의성을 개선시킨 부착형 3D 정보 입력 장치를 구현하였다. 3D 정보입력 시스템은 공간 좌표인식을 위한 자이로 센서, RF 송수신기 및 신호처리모듈 등으로 구성되었다. 테스트 보드를 제작하여 인체부착 용이성, 통신거리, 동작감지도 등의 일련의 실험을 수행하여 설계된 시스템의 효용성을 검증 하였다.

• The Journal of Korean Physical Therapy
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• 제27권2호
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• pp.124-127
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• 2015

Purpose: The emphasis on gait rehabilitation after stroke depends on training support through the lower limbs, balance of body mass over the changing base of support. However, muscle weakness, lack of control of lower limb, and poor balance can interfere with training after stroke. For this case study report, a wearable robot orthosis was applied to stroke patients in order to verify its actual applicability on balance and gait ability in the clinical field. Methods: Two stroke patients participated in the training using the wearable robot orthosis. Wearable robot orthosis provides patient-initiated active assistance contraction during training. Training includes weight shift training, standing up and sitting down, ground walking, and stair up and down Training was applied a total of 20 times, five times a week for 4 weeks, for 30 minutes a day. Gait ability was determined by Stance phase symmetry profile, Swing phase symmetry profile, and velocity using the GAITRite system. Balance ability was measured using the Biodex balance system. Results: Subjects 1, 2 showed improved gait and balance ability with mean individual improvement of 72.4% for velocity, 19.4% for stance phase symmetry profile, 9.6% for swing phase symmetry profile, and 13.6% for balance ability. Conclusion: Training utilizing a wearable robot orthosis can be useful for improvement of the gait and balance ability of stroke patients.

• 한국인터넷방송통신학회논문지
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• 제18권4호
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• pp.205-210
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• 2018

이글은 웨어러블 기술을 두 가지 측면에서 고찰하였다. 첫째, 스마트 기술이 접목된 옷에 스며든 욕망이다. 둘째, 옷을 입은 이용자를 바라보는 시선에 대한 고찰이다. 이 글은 웨어러블 기술로 새롭게 등장할 옷에 대한 연구이다. 그러나 이 옷은 단순히 기술적인 문제가 아니다. 오히려, 옷에 대한 인간 본능을 고려한 시스템 설계이다. 따라서 이 연구는 사회과학적 경계를 아우른다. 이 글은 웨어러블에서 수집된 데이터가 단순한 센싱 기반의 데이터라 보지 않는다. 오히려, 웨어러블 기술은 인간 고유의 생명활동과 감정을 드러낸다. 이글은 인문학과 기술을 융합 또는 복합한 시도이다.

• 대한임베디드공학회논문지
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• 제17권1호
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• pp.1-7
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• 2022

The number of patients with many complications grows with the increase of aging population. As the elders and severely ill patients spend most of their time in bed, it leads to Pressure Injuries (PI) such as bedsores. Unfortunately, there is no method to automatically detect changes in patient's posture which leads to the need for a caregiver every set of times when the patient needs to be moved. Many studies are conducted to solve this inefficient problem. Yet, these studies require costly devices or use methods that disturb patient's sleeping environment. Those methods are mostly hard to implement in practice due to these reasons. We propose a method to detect posture using a three-axis acceleration sensor from the wrist band. We developed a wearable watch that measures sleep-related data. We analyzed 40 people's sleep data with a wearable module and watch to measure their postures such as supine, left-side, and right-side. Then, we compared the classified posture from the watch with the wearable module and achieved 90% accuracy. Therefore, we concluded that only by using the wearable watch, we can detect the sleeping position without any new equipment or system to diagnose the patients without discomfort during their daily lives.

• Journal of information and communication convergence engineering
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• 제12권1호
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• pp.14-18
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• 2014

A recent major development in computer technology is the advent of wearable computer systems. Wearable computer systems employ a wireless universal serial bus (WUSB), which refers to a combination of USB with the WiMedia wireless technical specifications. In this study, we focus on an integrated system of WUSB over wireless body area networks (WBANs) for wireless wearable computer systems. However, current WBAN MACs do not have well-defined quality of service (QoS) mapping and resource allocation mechanisms to support multimedia streams with the requested QoS parameters. To solve this problem, we propose a novel QoS-aware time slot allocation method. The proposed method provides fair and adaptive QoS provisioning to isochronous streams according to current traffic loads and their requested QoS parameters by executing a QoS satisfaction algorithm at the WUSB/WBAN host. The simulation results show that the proposed method improves the efficiency of time slot utilization while maximizing QoS provisioning.