• Title/Summary/Keyword: Textile electrode

Search Result 60, Processing Time 0.023 seconds

Development of Self-trainer Fitness Wear Based on Silicone-MWCNT Sensor (실리콘-탄소나노튜브 센서 기반의 셀프트레이너 피트니스 웨어 개발)

  • Cho, Seong-Hun;Kim, Kyung-Mi;Cho, Ha-Kyung;Won, You-Seuk
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.19 no.7
    • /
    • pp.493-503
    • /
    • 2018
  • Recently, as living standards have improved, many people are becoming more interested in health, and self-training is increasing through exercise to prevent and manage pre-illness. In general, an imbalance of muscles causes asymmetry of posture, which can cause various diseases by accompanying an adjustment force, circulation action, displacement of internal organs, etc.. In this study, the development of fitness software that can be self - training among smart wears has attracted considerable attention in recent years. In this study, a technology was proposed for the commercialization of self - trainer fitness wear by a simulation through Android - based applications. Self - trainer fitness software was developed by combining a conductive polymer, fashion design, sewing, and electric and electronic technology to monitor the unbalance of the muscles during exercise and make smart wear that can calibrate the asymmetry by oneself. In particular, a polymer sensor was fabricated by deriving the optimal MWCNT concentration, and the electrode signal was collected by attaching the electrode to the optimal position, where the electrode signal line using the conductive fiber was designed and attached to collect the signal. A signal module that converts the bio-signals collected through electrical signal conversion and transmits them using Bluetooth communication was designed and manufactured. Self-trainer fitness software that can be commercialized was developed by combining noise cancellation with Android-based self-training application using a software algorithm method.

An Exploratory Study on the Development of a Healthcare Smart Clothing for Measurement of Body Composition (체성분 측정용 스마트 의류 개발의 가능성 탐색)

  • Moon, Hui-Sung;Cho, Hyun-Seung;Park, Sun-Hyung;Lee, Joo-Hyeon;Cha, Kee-Chul;Shin, Sun-Young;Jung, Hyo-Il
    • Science of Emotion and Sensibility
    • /
    • v.10 no.3
    • /
    • pp.383-391
    • /
    • 2007
  • We have developed and evaluated a smart clothing system for the measurement of body composition in real time. Two kinds of experimental clothes were developed in this study to investigate the effects of textile electrodes on the measurements. As long as the wearer maintained same posture, the magnitudes of impedance was measured identically even though he got into the clothing again. Moreover we found the clothing could measure the impedance of each body segment.

  • PDF

Development of the Practical Garment Apparatus to Measure Vital Sign of ECG for U-Health Care (ECG 생체신호 측정을 위한 실용적 U-헬스케어 의복개발)

  • Park, Hye-Jun;Hong, Kyung-Hi;Kim, Seung-Hwan;Shin, Seung-Shul
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.31 no.2 s.161
    • /
    • pp.292-299
    • /
    • 2007
  • Development of portable device measuring the vital sign continuously with no limit of time and space is absolutely prerequisite for the U-health care that grafts the ubiquitous concept into medical system. Accordingly, it requires to develop a garment style apparatus for measuring vital-sign that is easy to wear on for a long time period. This study suggests a method to improve the insulation of electric cable and the skin adhesion of electrode by integrating the electric conductive material to garment, in order to develop a garment apparatus for measuring ECG for U-health care. Results of the research are as follows; In order to provide the adjacent conductive yarns with insulation, braid with narrow woven end was interlaced using polyester yarn. As a result, the direct contact between electric conductive yarns was restrained, which would be interposed into pin-tuck structured cable. Washable silicone gel applied around the electrode made of electric conductive fabric improved the adhesion, which prevents electrodes from dropping off from the skin surface during body movement. ECG signals on the human subject were tested using the garment apparatus developed by the above method. And the result was that the clear QRS wave formation in the typical form of ECG could be measured in both conditions of still and moving state as well. The result of this study is expected to contribute for the production of U-health care related medical apparatus by accelerating the practical uses of the garment measuring vital sign at a reasonable price.

Development of NaOH Concentration Control System for a Liquor-Flow Polyester Hydrolysis Machine (액류감량기 가성소다 농도 제어 시스템의 개발)

  • 박정우;변희운;노근필;구자길;황백순;김덕리
    • Textile Coloration and Finishing
    • /
    • v.12 no.4
    • /
    • pp.233-238
    • /
    • 2000
  • In this study, the control system of sodium hydroxide was demonstrated to systemize hydrolysis process in polyester dyeing. We mainly focused on the application method of acid-alkali titration for the polyester hydrolysis machine of liquor-flow type. Industrial pH meter with electrode type was used for identifying equivalence point. Three units which were analogue-to-digital card, microprocessor and digital output card were used to control NaOH concentration in the control part of the system. The yielded data are translated to the microprocessor through analogue-digital interfacing card. After calculating, NaOH concentration in NaOH storage tank was controlled through the digital output card and solenoid valves.

  • PDF

Preparation of Electrospun PI-based ACF Web for Electrode of Electric Double Layer Capacitior(EDLC) (정전기 방사에 의한 EDLC 전극용 폴리이미드계 활성탄소섬유 웹의 제조)

  • Choi, Young-Ok;Kim, Chan;Yang, Gab-Seung
    • Proceedings of the Korean Fiber Society Conference
    • /
    • 2003.10b
    • /
    • pp.134-137
    • /
    • 2003
  • 탄소섬유나 활성탄소섬유(activated carbon fiber, ACF)는 일반적으로 출발물질에 따라 polyacrylonitrile(PAN)계, 아크릴(acryl)계, 피치(pitch)계, 페놀(phenol)계 등으로 분류할 수 있다. 보통 습식, 용융 혹은 용융분사(melt-blown) 방사 방법에 의해 섬유 형태로 형성한 다음 산화성 가스 분위기에서 불융화 과정을 거쳐 열에 대한 안정성을 부여하여 불활성 분위기에서 탄소화하여 탄소섬유를 제조하거나, 수증기나 이산화 탄소와 같은 산화성 분위기에서 활성화하여 활성탄소섬유를 제조한다. (중략)

  • PDF

The Effect of Low Temperature Plasma on the Properties of Foam (저온플라즈마 처리가 발포체의 특성에 미치는 영향)

  • Park, Cha-Cheol;Kim, Ho-Jung
    • Textile Coloration and Finishing
    • /
    • v.17 no.6 s.85
    • /
    • pp.36-41
    • /
    • 2005
  • The effects of low temperature plasma treatment on the properties of three types of foams, polyurethane(PU), injection phylon(IP), and phylon(PH) that used for footwear mid-sole were examined. The change of surface properties of foams were characterized by electron scanning microscope, contact angle measurement, and universal testing machine. Adhesion was tested by T-peel tests of plasma treated foams/polyurethane adhesive joints. The contact angle of three types of foams were decreased dramatically with the plasma treatment time, specifically noticeable in the case of phylon(Ph). It has shown the relationship with the contact angle of phylon(PH) and the distance between electrode and samples. The peel strength of foams were increased with the increase of plasma treatment time.

A Study of Sensing Locations for Self-fitness Clothing base on EMG Measurement (셀프 피트니스 의류 개발을 위한 근전도 센싱 위치 연구)

  • Cho, Hakyung;Cho, Sangwoo
    • Fashion & Textile Research Journal
    • /
    • v.18 no.6
    • /
    • pp.755-765
    • /
    • 2016
  • Recently, interest in monitoring health and sports is growing because of the emphasis on wellness, which is accelerating the development and commercialization of smart clothing for biosignal monitoring. In addition to exerciseeffect monitoring clothing that tracks heart rate and respiration, recently developed clothing makes it possible to monitor muscle balance using electromyogram (EMG). The electrode for EMG have to attached to an accurate location in order to obtain high-quality signals in surface EMG measurement. Therefore, this study develops monitoring clothing suitable for different types of human bodies and aims to extract suitable range of EMG according to movements in order to develop self-fitness monitoring clothing based on EMG measurement. This study identified and attached electrodes on six upper muscles and two lower muscles of ten males in their 20s. After selecting six main motions that create a load on muscles, the 8-ch wireless EMG system was used to measure amplitude value, noise, SNR and SNR (dB) in each part and statistical analysis was conducted using SPSS 20.0. As a result, the suitable range for EMG measurement to apply to clothing was identified as four parts in musculus pectoralis major; three parts in muscle rectus abdominis, two parts each in shoulder muscles, backbone erector, biceps brachii, triceps brachii, and musculus biceps femoris; and four part in quadriceps muscle of thigh. This was depicted diagrammatically on clothing, and the EMG-monitoring sensing locations were presented for development of self-fitness monitoring.

The Effects of Hexamethylenetetramine Concentration on the Structural and Electrochemical Performances of Ni(OH)2 Powder for Pseudocapacitor Applications (헥사메틸렌테트라민 농도에 따른 수산화니켈 입자의 특성 분석 및 의사커패시터 응용)

  • Kim, Dong Yeon;Jeong, Young-Min;Baek, Seong-Ho;Son, Injoon
    • Journal of Powder Materials
    • /
    • v.26 no.3
    • /
    • pp.231-236
    • /
    • 2019
  • Ni hydroxides ($Ni(OH)_2$) are synthesized on Ni foam by varying the hexamethylenetetramine (HMT) concentration using an electrodeposition process for pseudocapacitor (PC) applications. In addition, the effects of HMT concentration on the $Ni(OH)_2$ structure and the electrochemical properties of the PCs are investigated. HMT is the source of amine-based $OH^-$ in the solution; thus, the growth rate and morphological structure of $Ni(OH)_2$ are influenced by HMT concentration. When $Ni(OH)_2$ is electrodeposited at a constant voltage mode of -0.85 V vs. Ag/AgCl, the cathodic current and the number of nucleations are significantly reduced with increasing concentration of HMT from 0 to 10 mM. Therefore, $Ni(OH)_2$ is sparsely formed on the Ni foam with increasing HMT concentration, showing a layered double-hydroxide structure. However, loosely packed $Ni(OH)_2$ grains that are spread on Ni foam maintain a much greater surface area for reaction and result in the effective utilization of the electrode material due to the steric hindrance effect. It is suggested that the $Ni(OH)_2$ electrodes with HMT concentration of 7.5 mM have the maximum specific capacitance (1023 F/g), which is attributed to the facile electrolyte penetration and fast proton exchange via optimized surface areas.

Development of Bib Pants Design and Pattern for Cycling Smart Wear (사이클링 스마트웨어 제작을 위한 빕 팬츠 디자인 및 패턴 개발)

  • Yunyoung, Kim;Byeongha, Ryu;Woojae, Lee;Kikwang, Lee;Rira, Kim
    • Journal of Fashion Business
    • /
    • v.26 no.5
    • /
    • pp.91-104
    • /
    • 2022
  • In this study, a cycling smart wear for measuring cycling posture and motion was developed using a three-dimensional motion analysis camera and an IMU inertial sensor. Results were compared according to parts to derive the optimal smart device attachment location, enabling correct posture measurement and cycle motion analysis to design a pattern. Conclusions were as follows: 1) 'S-T8' > 'S-T10' > 'S-L4' was the most significant area for each lumbar spine using a 3D motion analysis system with representative posture change (90°, 60°, 30°) to derive incisions and size specifications; 2) the part with the smallest relative angle change among significant section reference points during pattern design was applied as a reference point for attaching a cycling smart device to secure detachable safety of the device. Optimal locations for attaching the cycling device were the "S-L4" hip bone (Sacrum) and lumbar spine No. 4 (Lumbar 4th); 3) the most suitable sensor attachment location for monitoring knee induction-abduction was the anatomical location of the rectus femoris; 4) a cycling smart wear pattern was developed without incision in the part where the sensor and electrode passed. The wearing was confirmed with 3D CLO. This study aims to provide basic research on exercise analysis smart wear, to expand the smart cycling area that could only be realized with smart devices and smart watches attached to current cycles, and to provide an opportunity to commercialize it as cycling smart wear.

A Study on Wearable Emotion Monitoring System Under Natural Conditions Applying Noncontact Type Inductive Sensor (자연 상태에서의 인간감성 평가를 위한 비접촉식 인덕티브 센싱 기반의 착용형 센서 연구)

  • Hyun-Seung Cho;Jin-Hee Yang;Sang-Yeob Lee;Jeong-Whan Lee;Joo-Hyeon Lee;Hoon Kim
    • Science of Emotion and Sensibility
    • /
    • v.26 no.3
    • /
    • pp.149-160
    • /
    • 2023
  • This study develops a time-varying system-based noncontact fabric sensor that can measure cerebral blood-flow signals to explore the possibility of brain blood-signal detection and emotional evaluation. The textile sensor was implemented as a coil-type sensor by combining 30 silver threads of 40 deniers and then embroidering it with the computer machine. For the cerebral blood-flow measurement experiment, subjects were asked to attach a coil-type sensor to the carotid artery area, wear an electrocardiogram (ECG) electrode and a respiration (RSP) measurement belt. In addition, Doppler ultrasonography was performed using an ultrasonic diagnostic device to measure the speed of blood flow. The subject was asked to wear Meta Quest 2, measure the blood-flow change signal when viewing the manipulated image visual stimulus, and fill out an emotional-evaluation questionnaire. The measurement results show that the textile-sensor-measured signal also changes with a change in the blood-flow rate signal measured using the Doppler ultrasonography. These findings verify that the cerebral blood-flow signal can be measured using a coil-type textile sensor. In addition, the HRV extracted from ECG and PLL signals (textile sensor signals) are calculated and compared for emotional evaluation. The comparison results show that for the change in the ratio because of the activation of the sympathetic and parasympathetic nervous systems due to visual stimulation, the values calculated using the textile sensor and ECG signals tend to be similar. In conclusion, a the proposed time-varying system-based coil-type textile sensor can be used to study changes in the cerebral blood flow and monitor emotions.