• 한국정밀공학회지
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• 제32권2호
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• pp.199-208
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• 2015

The aim of this paper is to review recent developments and commercialized products in the field of wearable wellness sensors and devices (WWSD). Although there are several dedicated researches, the completed theories and systematic techniques have not been well established. Therefore, we divided the WWSD into four different topics (healthcare, safety & prevention, gaming & lifestyle, and sports & fitness), and review the state of the arts and challenges on the applications on the sensor and device technologies with particular focus on WWSD. We also review the limitations of the current technologies on the developments and commercialized products. Finally, we suggest and discuss new research topics related on the four topics of the WWSD.

• 패션비즈니스
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• 제25권5호
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• pp.88-98
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• 2021

In this study, the characteristics of digital anthropometric methods were determined with case studies. These methods were broadly classified into two categories: non-wearable and wearable. Then, these categories were further classified into four types: 3D Scanning, mobile app, smart clothing, and smart tool Among the non-wearable types, the "3D scanning" technique was based on the use of 3D hardware equipment. With this technique, the body shape was measured and the internal body information was obtained. Therefore, it is used in fields of healthcare and fitness. Among the wearable types, "Smart clothing" involves a special clothing that measures human body and a smartphone application. Both the components are linked to a fashion platform, which is based on the measured sizes that help shoppers. The "Smart tool" has the characteristic of measuring only with smart tools and smartphone applications; it does not involve the measurement of images. The common advantage of digital anthropometric methods are as follows: they reduce the time and cost of measurement by enabling self-measurement. Moreover, simple measurements are used to determine the size of anthropometry. Thereafter, it accumulates this data to track the continuous changes in size. From an industrial point of view, digital anthropometric technology should be used to increase sales. The on-demand market can be expanded as global consumers would throng the Korean fashion market. For the consumer, an avatar should be created to fit the user's size. This would provide a fun experience to the user.

• 센서학회지
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• 제31권5호
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• pp.307-311
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• 2022

With the development of Internet of Things (IoT) technologies, numerous people worldwide connect with various electronic devices via Human-Machine Interfaces (HMIs). Considering that HMIs are a new concept of dynamic interactions, wearable electronics have been highlighted owing to their lightweight, flexibility, stretchability, and attachability. In particular, wearable strain sensors have been applied to a multitude of practical applications (e.g., fitness and healthcare) by conformally attaching such devices to the human skin. However, the stretchable elastomer in a wearable sensor has an intrinsic stretching limitation; therefore, structural advances of wearable sensors are required to develop practical applications of wearable sensors. In this study, we demonstrated a 3-dimensional (3D), porous, and piezoelectric strain sensor for sensing body movements. More specifically, the device was fabricated by mixing polydimethylsiloxane (PDMS) and polyvinylidene fluoride nanoparticles (PVDF NPs) as the matrix and piezoelectric materials of the strain sensor. The porous structure of the strain sensor was formed by a sugar cube-based 3D template. Additionally, mixing methods of PVDF piezoelectric NPs were optimized to enhance the device sensitivity. Finally, it is verified that the developed strain sensor could be directly attached onto the finger joint to sense its movements.

• 대한인간공학회지
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• 제36권4호
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• pp.281-292
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• 2017

Objective: This study aims to identify important physical design variables in designing a necklace type wearable device, and to present design guidelines to maximize comfort that a user feels upon wearing the device. Background: Interests in fitness culture and personal health are on the rise recently. In such a situation, demand for necklace type wearable devices is projected to increase a lot, as the devices enable users to use their hands freely and to enjoy various contents through connection with mobile devices. However, the necklace type wearable device's comfort was assessed to have the lowest comfort in a running situation, where human body moves up and down and left and right more than other devices wearable on other human body parts. Therefore, the usability of a necklace type wearable device was low. In this regard, studies on identification of the variables affecting user comfort upon wearing a necklace type wearable device and on physical design direction maximizing comfort and usability are needed. Method: A pretest and a main test were carried out to draw the direction of necklace type wearable device design. In the pretest, wearing evaluation on the diverse types of devices released in the market was conducted to draw physical design variables of the devices affecting comfort. Furthermore, variables significantly affecting the comfort of a device were selected through an analysis of variance (ANOVA). In the main test, anthropometry was performed, and information on anthropometric items corresponding to the design variables selected in the pretest was acquired. Based on the pretest results and the anthropometric information in the main test, the present study produced design guidelines maximizing the comfort of a necklace type wearable device with regard to major design variables upon dynamic tasks. Results: According to the pretest results, the variables having effects on comfort were the angle of side points, width, and height. Due to interactions between variables, those need to be simultaneously considered upon designing a device. Upon dynamic tasks, the angle of side points and width of a device was designed to be smaller than mean angle of the trapezius muscle and neck width, and thus attachment to human body was high. As height was designed to be larger than mean neck front and rear point width, comfort was higher due to feeling of stability. Conclusion: Because user sensitivity to comfort was high at human body's inflection points, a device needs to be designed for users not to feel high pressure on specific body parts with the device fitting human body shape well. A design considering user's situation is also required in further studies.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2015년도 춘계학술발표대회
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• pp.712-713
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• 2015

IoT (Internet of Things)가 차세대 기술로 각광을 받으면서 않은 IT 전문인들이 대표주자인 웨어러블 디바이스(wearable device) 의 활용도에 많은 관심을 기울이고 있다. 하지만 현재까지 헬스케어(healthcare)와 피트니스(fitness) 서비스 중심으로 구성되는 등 다양성을 갖지 못하고 있다. 본 논문에서는 스마트 위치를 이용하여 장보기에 다양한 편리성을 제공하는 라이프스타일 관련 웨어러블 어플리케이션을 제안한다. 바코드 스캐닝 기능을 통하여 구매한 제품에 대한 정보를 자동으로 검출하여 가계부를 작성한다. 또한 고객에게 현재까지의 구매 내역에 기반하여 최적의 추천상품 목록을 구성하는 서비스도 제공한다.

• 전기전자학회논문지
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• 제23권2호
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• pp.747-750
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• 2019

웨어러블 디바이스는 일상생활에서 실질적으로 필수적이며 사용자들에게 편리하게 이용되고 건강관리와 의학 분야 등에 활용되고 있다. 전력분야에서 전원 배터리의 사용시간의 한계를 극복하고 효율적인 충전방법에 관한 많은 연구가 진행되고 있다. 무선전력전송은 전선을 사용하지 않고 무선으로 전기장을 부하에 전력을 전달하는 기술이다. 이 전송기술은 저 전력의 스마트폰에서부터 고 전력을 사용하는 철도 충전시스템까지 응용분야가 다양하다. 충전방식은 유도방법과 자기공진방법의 2 종류로 나누는데 자기공진주파수는 13.45 Mhz를 사용하였다. 본 연구에서는 전송효율을 측정 비교하기 위하여 2 종류의 하드웨어를 구현한 후 비교하는데 있다.

• 패션비즈니스
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• 제25권5호
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• pp.99-113
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• 2021

This study aimed to produce sensors for measuring thigh motor skills. A textile stretch sensor was manufactured using a CNT(Carbon Nano Tube) 0.1 wt% water SWCNT(Single-Walled Carbon Nano Tube) solution, and different designs were applied to increase the sensitivity of the sensor, and different GF(Gauge Factor) values were compared using UTM devices. The same design was applied to fabrics and weaves to observe changes in performance according to fibrous tissue, and the suitability of sensors was determined based on tensile strength, elongation, and the elongation recovery rate. Sensitivity was found to vary depending upon the design. Thus the manufactured sensor was attached to a pair of fitness pants as a prototype, divided into lunge position and squat position testing, and the stretch sensor was used to measure thigh movements. It was shown that stretch sensors used to measure thigh motor skills should have light and flexible features and that elongation recovery rates and tensile strength should be considered together. The manufactured stretch sensor may be applicable to various sports fields that use lower limb muscles, wearable healthcare products, and medical products for measuring athletic ability.

• 복식문화연구
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• 제26권4호
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• pp.632-648
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• 2018

This study aims to contribute to the development of sports wearables. It was conducted by a convergence team of professionals in the fashion industry, kinesiology and sports studies, and computer science and engineering. The purpose of the current study was to design and develop a fabric-type fitness band for a sensor to measure acceleration during jump rope exercises. Computer science and engineering professionals developed the Arduino board and sensor, kinesiology and sports studies provided the necessary exercise protocol, and the fashion industry professionals developed the band. First, a fitness band preference survey was completed by men and women between the ages of 20 and 50. Typical uses of the band included tracking exercise amount as measured by the number of steps taken and calories burned. Strap watch closure, a single color and achromatic color, and soft and smooth touch materials were preferred as band design. Second, two fabric-type fitness bands were designed and developed. Design 1 had a 3-dimensional pocket for the sensor, bright blue color, and stretch binding around the edges and for a loop. Design 2 had a flat pocket for the sensor, achromatic color, mesh binding around the edges and two metal loops. Both designs had Velcro as a closure. Third, wear testing of both bands with the sensor were conducted of 15 women in their 20s. They wore the bands during jump rope exercises. Both bands generally satisfied the participants. The Design 2 band was slightly more satisfying than the Design 1 band.

• 융합보안논문지
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• 제15권7호
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• pp.119-124
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• 2015

본 연구에서는 건강유지 및 증가를 위한 스포츠와 ICT 융합 기술의 유형별 분류를 통해 현황과 향후 전망을 살펴보고자 하였다. 스포츠와 ICT 융합 기술은 스포츠와 가상현실, 웨어러블 기기, 그리고 애플리케이션과 플랫폼의 개발의 세 가지 유형으로 분류할 수 있었다. 첫째, 가상현실 기술의 적용은 다양한 동작인식 센싱 기술을 통해 사용자에게 현실감과 재미, 그리고 몰입을 경험하게 함으로써 실제 스포츠를 즐기는 것과 같은 느낌을 주었으며, '게이미피케이션' 개념으로 확장되어 '나이키플러스'의 게임화 적용은 웨어러블 디바이스 시장의 확산에 기폭제가 되었다. 둘째, 웨어러블 디바이스 영역에서 가장 빠르게 성장하고 있는 분야는 건강과 스포츠 분야로, 글로벌 ICT 기업뿐만 아니라 중국 업체와 스타트 업 등 다양한 사업자들이 피트니스 관련 웨어러블 디바이스 출시하여 저변확대를 위한 경쟁을 하고 있다. 셋째, 애플리케이션을 통해 모아진 건강과 운동 관련 데이터를 활용할 수 있는 플랫폼 구축과 영향력이 확대되고 있다. 향후 웨어러블 디바이스와 플랫폼 경쟁이 더욱 본격화 될 것으로 예상되며, 향후 지속적 발전을 위해서는 충분한 데이터 라이브러리 확보와 기술력 개발 등의 과제를 풀어나가야 할 것이다.

• 인터넷정보학회논문지
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• 제16권5호
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• pp.93-98
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• 2015

최근 들어서 정보통신기술 자체뿐만 사물인터넷(IoT)을 활용한 비즈니스가 빠르게 확대되고 있다. 일반적으로 사물인터넷 중에서 웨어러블 디바이스는 고객을 대상으로 활용된 분야 중 가장 선도적인 적용분야로 인식되고 있다. 본 연구는 먼저 웨어러블 디바이스의 대표적 응용분야인 활동량 측정기에 대해서 고객의 니즈를 파악하고, 이를 잘 알려진 마케팅 믹스(제품, 가격, 유통, 촉진)와 연계시킨다. 이를 위해서 대학생들을 대상으로 서베이가 수행되었으며, 활동량 측정기의 현재 및 잠재된 니즈를 밝혔다. 또한 이러한 니즈는 마케팅 믹스에 의해서 분류되었다. 활동량 측정기는 다른 정보통신기기와는 달리 잠재된 욕구가 많았으며, 의료기기적 특성으로 인해 유통채널 등도 온라인, 대리점이 아닌 신뢰성을 보장할 직영점이나 오프라인 매장의 선호도가 크다. 본 연구결과는 일반 사물인터넷으로서 활동량 측정기뿐 아니라 웨어러블 디바이스를 개발하려는 개발자와 경영층에게 디자인요소에 관한 새로운 시사점을 제공할 것이다.