• Title, Summary, Keyword: Wearable Devices

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Hybrid Governor for Wearable OS Using H/W Low-power Features (하드웨어 저전력 기능을 활용한 웨어러블 운영체제의 하이브리드 가버너)

  • Lee, SungYup;Kim, HyungShin
    • IEMEK Journal of Embedded Systems and Applications
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    • v.13 no.3
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    • pp.117-124
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    • 2018
  • Wearable devices have become widespread. Fitness band is one of common wearable devices, providing useful functions. It helps users to monitor and collect their status such as heart rate and travel distance. Wearable devices, including fitness bands, are designed in small size and it ends up having small battery capacity. In that regard, it is necessary to expand the lifetime of wearable devices. Conventional power management scheme of wearable devices is based on DVFS Ondemand Governor and peripheral control by timeout event, such as turning off the LCD. In this paper, we propose a hybrid governor applying hardware supporting low power mode such as sleep mode to exploit the periodicity of fitness band task. In addition, we show hybrid governor outperforms in power consumption than conventional power management scheme of wearable devices based on Ondemand Governor through experiments.

Study of Standardization and Test Certification for Wearable Smart Devices (웨어러블 스마트기기의 표준화 및 시험인증 연구)

  • Han, Tae-Su;Kim, Deok-kee;Kwon, Oh-Young;Choa, Sung-Hoon
    • Journal of the Microelectronics and Packaging Society
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    • v.23 no.4
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    • pp.11-18
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    • 2016
  • Today, wearable technology products are used in a wide range of consumer, healthcare, bio-medical, and industrial applications. The market for wearable technology products is expected to increase dramatically over the next several years. In addition, concerns for safety, performance and reliability of wearable products keep increasing and will be essential for widespread acceptance in the marketplace. Wearable smart devices, which are generally in contact with the human body and skin, are exposed to the risk of the electric shock, burn, and explosion. Therefore, the standardization of wearable devices in terms of human safety and reliability should be very important. Furthermore, the development of test method and test certification of the wearable products will be one of the key technology for mass production. Such standardization and certification will help consumers to choose the safest and best quality wearable devices and allow manufacturers to prove the safety and quality of their products, thereby helping them to gain a competitive technology. This paper discusses the current status of the wearable smart devices as well as the standardization and test certification applicable to wearable technology products.

Wearable Devices in Medical Internet of Things: Scientific Research and Commercially Available Devices

  • Haghi, Mostafa;Thurow, Kerstin;Stoll, Regina
    • Healthcare Informatics Research
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    • v.23 no.1
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    • pp.4-15
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    • 2017
  • Objectives: Wearable devices are currently at the heart of just about every discussion related to the Internet of Things. The requirement for self-health monitoring and preventive medicine is increasing due to the projected dramatic increase in the number of elderly people until 2020. Developed technologies are truly able to reduce the overall costs for prevention and monitoring. This is possible by constantly monitoring health indicators in various areas, and in particular, wearable devices are considered to carry this task out. These wearable devices and mobile apps now have been integrated with telemedicine and telehealth efficiently, to structure the medical Internet of Things. This paper reviews wearable health care devices both in scientific papers and commercial efforts. Methods: MIoT is demonstrated through a defined architecture design, including hardware and software dealing with wearable devices, sensors, smart phones, medical application, and medical station analyzers for further diagnosis and data storage. Results: Wearables, with the help of improved technology have been developed greatly and are considered reliable tools for long-term health monitoring systems. These are applied in the observation of a large variety of health monitoring indicators in the environment, vital signs, and fitness. Conclusions: Wearable devices are now used for a wide range of healthcare observation. One of the most important elements essential in data collection is the sensor. During recent years with improvement in semiconductor technology, sensors have made investigation of a full range of parameters closer to realization.

Strategic Approach to Privacy Calculus of Wearable Device User Regarding Information Disclosure and Continuance Intention

  • Cho, Ji Yeon;Ko, Daesun;Lee, Bong Gyou
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.7
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    • pp.3356-3374
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    • 2018
  • The healthcare and fitness wearable-device market is considered as the driving force of the entire wearable device market. However, there are concerns with respect to information privacy because wearable devices constantly collect sensitive data such as individuals' health information. Thus, there is a need for a comprehensive understanding from the perspective of information privacy concerns and related behavior. This study investigates factors considered in the privacy calculus of wearable fitness devices, and verifies differences obtained by the privacy calculus process according to the frequency of exercise. The results obtained from a survey of 248 undergraduate students in Korea revealed that service providers should consider users' interests and exercise characteristics in order to mitigate their privacy concerns and encourage continuous use of wearable devices. This study provides useful insights pertaining to users of wearable fitness devices, and targets researchers and practitioners.

Hook Type Wearable Device Based on User Discomfort (불편도를 고려한 귀걸이 형 웨어러블 디바이스 가이드라인 개발)

  • Kim, Jinyoung;Ban, Kimin;Im, Youngjae;Jung, Eui S.
    • Journal of the Ergonomics Society of Korea
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    • v.36 no.6
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    • pp.765-776
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    • 2017
  • Objective: This study aims to discover Priority of Hook type Wearable Device's PUI variabels and derive Hook related variables' specification by conducting objective measure. Background: With rapid increasing interest of Health-care Services and ICT technology, the research of Wearable Devices for Sport are becoming main concern. However, Most research of wearable devices are conducted in Economic aspects. And, Hook Type Wearable devices are stay in close to ears but there is not enough studies which are concerning ear characteristic. We need research of discover priority between Hook type wearable device's PUI variables and PUI Guideline which lower discomfort. Method: First, in 1st research, Research of market's Hook type Wearable Devices' PUI Specification. Next, Derive PUI variables and Prototypes with Orthogonal Design. And conduct a discomfort test with dynamic task. Second, in 2nd research, Derive Hook related PUI variables and Prototypes with Full Factorial Design. Conduct a discomfort test with dynamic task. Results: The PUI variables' priority is revealed as Padwidth, Outerwidth, Innerwidth, Upperlength, Lowerwidth, Lowerlength, Paddepth. And PUI variable's which are revealed lowest discomfort are 28mm width, 34mm Upperlength and 3 R value. Conclusion: This study evaluates the discomfort in Dynamic Task that affects the feel of Dynamic environment. Based on study results, a guideline for Hook type Wearable Devices is 28mm Width, 34mm Upperlength and 3 R value. Application: This study is expected to be used as basic data for designing Wearable Devices, as well as Hardware in the industries which are related to ear.

A Study of Intention to Use Wrist-worn Wearable Devices Based on Innovation Resistance Model - Focusing on the Relationship between Innovation Characteristics, Consumer Characteristics, and Innovation Resistance (혁신저항 모형에 기반한 손목형 웨어러블 디바이스의 수용의도 연구 - 혁신특성, 소비자 특성, 혁신저항을 중심으로)

  • Shin, Jae-Gwon;Lee, Sang-Woo
    • The Journal of the Korea Contents Association
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    • v.16 no.6
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    • pp.123-134
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    • 2016
  • As the internet of things has come into the spotlight, wearable devices have been emerging as a new and growing market and the next hot thing in the world. However, wearable device growth in the market has not met expectations. For continued growth and diffusion of wearable devices, it is important to investigate user resistance factors to them. This study gives attention to people who have resistance to wearable devices' tendency towards innovative uses. Specifically, this study is intended to find out which factors influence consumers' resistance and intention to use wrist-worn wearable devices, which are in high demand among wearable device. Results of the study show that the relative advantage, innovation expectation, complexity, financial risk and physical risk are the predictors of innovation resistance on wrist-worn wearable devices. And consumers' resistance affects the intention of positive acceptance. These findings confirm the importance of consumer resistance to the wrist-worn wearable device.

Deterministic Multi-dimensional Task Scheduling Algorithms for Wearable Sensor Devices

  • Won, Jong-Jin;Kang, Cheol-Oh;Kim, Moon-Hyun;Cho, Moon-Haeng
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.8 no.10
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    • pp.3423-3438
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    • 2014
  • In recent years, wearable sensor devices are reshaping the way people live, work, and play. A wearable sensor device is a computer that is subsumed into the personal space of the user, and is always on, and always accessible. Therefore, among the most salient aspects of a wearable sensor device should be a small form factor, long battery lifetime, and real-time characteristics. Thereby, sophisticated applications of a wearable sensor device use real-time operating systems to guarantee real-time deadlines. The deterministic multi-dimensional task scheduling algorithms are implemented on ARC (Actual Remote Control) with relatively limited hardware resources. ARC is a wearable wristwatch-type remote controller; it can also serve as a universal remote control, for various wearable sensor devices. In the proposed algorithms, there is no limit on the maximum number of task priorities, and the memory requirement can be dramatically reduced. Furthermore, regardless of the number of tasks, the complexity of the time and space of the proposed algorithms is O(1). A valuable contribution of this work is to guarantee real-time deadlines for wearable sensor devices.

Group Decision Algorithm for Convergence Oriented Group Display of Several Wearable Devices (복수 개의 웨어러블 디바이스들의 융합지향 그룹 디스플레이를 위한 그룹결정 알고리즘)

  • Kim, Yong-Gil;Kim, Yong-Ki;Kim, Mi-Hye
    • Journal of the Korea Convergence Society
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    • v.8 no.8
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    • pp.27-32
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    • 2017
  • The several wearable devices are not able to communicate through cable due to its portability. The wireless communication method is used because of its good communication quality and group action features when the several wearable devices communicate with each other. In this paper, we proposed the group decision algorithm for grouping display of the several wearable devices. It means that recognize as a group member after measuring distance in the wireless communication environment. The result of experience showed that the group-type display of several wearable devices method overcome the limit of the display of single wearable device.

A Prospective Study of Game Content based on Wearable Device (웨어러블 디바이스 기반의 게임콘텐츠 전망 연구)

  • Baek, Jaeyong;Chang, Hyojin;Kim, Youngjae
    • Journal of the Korea Society of Digital Industry and Information Management
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    • v.11 no.1
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    • pp.145-155
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    • 2015
  • The game industry has changed along with the advancement of device technology. The wearable, a recently appeared device will create new demand in this saturated age of the smart devices. The game industry's content targeted towards the wearable devices will play an important role as main driving source. For this reason, this research studies the development aspect and the current technical capabilities of games' platforms and contents by analyzing the contrast between the results of features and current situations of the wearable market. Consequently, we define the prospects of game content for wearable device. We also expect that the new style of the game content, combined with cloud game, augmented reality game and virtual reality game will appear in the next generation platforms gearing towards the wearable devices.

Analysis of Fire Risk through Battery Fire Cases and Experiments of Wearable Devices (웨어러블 기기의 배터리화재사례와 실험을 통한 화재위험성 분석)

  • Lee, Jung-Il
    • Journal of the Korea Safety Management and Science
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    • v.22 no.2
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    • pp.47-55
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    • 2020
  • This study analyzed ignition probability about Lithium-polymer batteries of what variously were being produced wearable devices recently. The study analyzed ignition probability by PCM(Protection Circuit Module) operating state and overcharged, over-discharged, exposed to high temperatures of Lithium polymer batteries, analyzing wearable devices on the market. Then it classified experimental results to implement analysis comparison about weight, X-ray imaging, battery decomposition. With these experiments, the study analyzed combustion-possibility and fire patterns. These statistics will be used to measure and verify the cause of a fire when identify wearable devices using Lithium-polymer batteries.