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Sheath-core 구조 전도사 섬유센서의 염색 가공조건에 따른 전기.물리학적 특성연구
조광년,박영민,김홍제,정재훈,배진석,Cho, Kwang-Nyun,Park, Young-Min,Kim, Hong-Jae,Jeong, Jae-Hoon,Bae, Jin-Seok 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.3
Textile-based sensors have many advantages when applied to body assessment. They have greater comfort than IT sensors and their use has substantially increased recently. Fiber-based sensors have various factors affecting their detecting ability such as pressure, voltage, current, and capacitance. Fiber-based sensor fabrics with sheath-core type conductive yarns were produced and relationships between capacitance changes and applied loads were investigated. The physical and electrical properties of the fiber-based sensor fabrics were investigated under various dyeing and finishing conditions. Dyeing and finishing conditions were optimized with respect to electrical properties using a signal detecting circuit.
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연구논문 : Sheath-core 구조 전도사 섬유센서의 Home-Textile 적용을 위한 전기,물리학적 특성연구
조광년 ( Kwang Nyun Cho ),정현미 ( Hyun Mi Jung ) 한국의류산업학회 2014 한국의류산업학회지 Vol.16 No.1
The usage of textile-based sensors has increased due to their many advantages (compared to IT sensors) when applied to body assessment and comfort. Textile-based sensors have different detecting factors such as pressure, voltage, current and capacitance to investigate the characteristics. In this study, textile-based sensor fabrics with sheathcore type conductive yarns were produced and the relationship between capacitance changes and applied load was investigated. The physical and electric properties of textile-based sensor fabrics were also investigated under various laminating conditions. A textile based pressure sensor that uses a sheath-core conductive yarn to ensure the stability of the pressure sensor in the textile-based sensor (the physical structure of the reaction characteristic of the capacitance) is important for the stability of the initial value of the initial capacitance value outside the characteristic of the textile structural environment. In addition, a textile based sensor is displaced relative to the initial value of the capacitance change according to pressure changes in the capacitance value of the sensor due to the fineness of the high risk of noise generation. Changing the physical structure of the fabric through the sensor characteristic of the pressure sensor via the noise generating element of laminating (temperature, humidity, and static electricity) to cut off the voltage output element to improve the data reliability could be secured.
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봉제패턴에 따른 UHF RFID 태그 안테나 특성 연구
전병돈,조광년,지영주,김홍제,최상현,Jeon, Byungdon,Jo, Kwangnun,Ji, Youngjoo,Kim, Hongjae,Choi, Sanghyun 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.3
In this study, we have fabricated an RFID tag antenna of the sewing type, and not the embroidery type. In addition, we have measured its impedance, return loss, and reading range. The sewing patterns of two different densities are fabricated, and the properties of the RFID tag antenna have been measured. The measurement results show that the two-layer sewing pattern RFID tag antennas are better than the one-layer sewing pattern antennas. Upon comparison, with regard to the effect of the sewing density, it is found that a lower density is a better property. The maximum reading ranges are 70, 49, 84, and 85 cm, which are sufficiently long.
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정재훈,류지현,조광년,조진황,Jeong, Jae-Hoon,Ryu, Ji-Hyun,Cho, Jwang-Nyun,Jo, Jin-Hwang 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.4
Recently, clothing products equipped with information devices to provide various types of information to the person wearing them have been commercialized. In the case of clothes using IT devices, a general method is to manufacture a circuit to transmit input signals and a connector to connect communication devices to additional devices, that are manufactured separately from the clothes and attached. These designs includes the circuit between the outer garments and lining. Therefore, they are applied to jackets with certain volume limitations. In addition, it is also troublesome that a separate process is needed. On the other hand, this problem can be solved by connections with an IT device via the embroidery of conducting yarn. Accordingly, in this study, sewing and embroidery to provide a signal transfer route for sound source data and a connection between information and communication devices and input/output devices conveniently were examined. An electrically conductiing thread made by coating with silver on 200 denier and 48 filament nylon thread was used as a sewing thread. The Vrms(voltage-root-mean-square) displaying the average value of the sound source through 2 types of stitching, 70 cm in length, on 100% nylon as the sewing thread was measured to determine the amount of sound and data loss. Based on the data, the stitch, 70 cm in length, sewed overlapping 5 times, and the end point was connected to a snap and applied to the cloth to attach to a mp3. The use of conductive yarn as embroidery yarn, can allow the transfer of sound sources without limitations to the clothing design. Accordingly an expansion of applications of smart wear is expected.
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최원철(Won-Cheol Choi),조광년(Kwang-Nyun Cho),이인수(In-Soo Lee) 한국정보기술학회 2017 한국정보기술학회논문지 Vol.15 No.5
In recent years, IT technology has been growing explosively with smart phones, and it has become a necessary component for all industries. Also, “smart clothing” and “smart fiber”, which are combined with IT technology and the textile industry, is attracting attention as a high value-added industry. Among them, wearable u-health device enables users to measure health variable without any sense of difference, have free hands and live without inconvenience. However, electrocardiogram (ECG) signals, which are bio-signals, are measured by using a band-type chest band or patch type Ag-AgCI electrode using conductive fibers to measure the wrist and ankle signals. Then the sense of heterogeneity was not completely resolved. In this paper, we fabricated electrodes using conductive fibers in the form of wrist bands to identify noise and P-QRS-T wave form in ECG signal measurement, the filter type and P-QRS-T wave signal to remove noise and the filter coefficient that can be realized by the digital filter. In addition, we measured the heart rate using RR-interval and compared it with Matron equipment to minimize the heterogeneity of smart clothing. From the experiment results, we verified the performances of the proposed conductive fiber-based wrist ECG system.
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