Anisotropy in electric properties of fabrics containing new conductive fibers

Azoulay, J.

doi:10.1109/14.2378

Cited by 16 publications

(10 citation statements)

References 3 publications

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“…Instead, we use electrically conductive fabrics sewn into a garment, where they behave like normal fabrics and thus don't restrict the wearer's body movement. 7,8 This distributed transmission medium serves as the physical layer of the DC-PLC bus. We've designed the system so that users can go about their daily business in the comfort of their home while being monitored remotely over the Internet.…”

Section: Conductive-fabricmentioning

confidence: 99%

Conductive Fabric Garment for a Cable-Free Body Area Network

Wade

Asada

2007

IEEE Pervasive Comput.

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O f the many wearable computing applications, health-monitoring systems open a world of ways to improve our quality of life by supporting continuous measurement of physiological signals such as limb motion, respiration, and skin temperature. Such systems can expedite recovery and rehabilitation, immediately address a sudden decline in health, and assist those in need until they have access to a health professional. For such wearable systems to become widely accepted, they must be minimally invasive and minimally intrusive. This is a crucial requirement particularly for elderly outpatients, 1 fitness professionals, 2 and soldiers in the battlefield.Placing sensor nodes on the body requires careful consideration of the components' physical connections, their bulk and weight, and the routing of wires along the body. 3,4 When evaluating how to locate system components on the body, you must also consider metrics such as relative movement, load-carrying capacity, and shape. 5 We've devised a unique approach to addressing these issues by applying DC power-line communication technology to a wearable monitoring system. DC-PLC technology uses a single, shared DC bus to provide power to each node and to simultaneously facilitate data transmission between nodes in an electrical network. 6 For maximum comfort, the DC bus must be flexible and lightweight. This precludes the use of traditional metal wiring. Instead, we use electrically conductive fabrics sewn into a garment, where they behave like normal fabrics and thus don't restrict the wearer's body movement. 7,8 This distributed transmission medium serves as the physical layer of the DC-PLC bus. We've designed the system so that users can go about their daily business in the comfort of their home while being monitored remotely over the Internet.In this article, we focus on a novel method for the analysis and design of these conductive-fabric (CF), sensor-network garments, including a discussion of our method for applying DC-PLC to a wearable garment, a method of analyzing the garment characteristics, and the details of the physical implementation. DC-PLC on the bodyThe garment design reflects our ability to simultaneously transmit power and information over a single medium, commonly known as power-line carrier communication. The DC-PLC bus consists of a power and data supply line, which we call the consolidated power-signal (CPS) line, and a ground line for electrical return. Sensor nodes are connected to this DC-PLC bus, and the system superimposes the modulated physiological data they collect on the CPS. The sensor nodes, embedded in the garment at various locations, transmit data along the bus to a master node that transmits all sensor information wirelessly to a local capture and storage mechanism, such as a personal computer.Theoretical analysis and experimentation show that a prototype body area network composed of 2D electrically conductive fabric sheets can transmit both signals and DC power sufficient for implementing a cable-free network in a garment.

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Section: Conductive-fabricmentioning

confidence: 99%

Conductive Fabric Garment for a Cable-Free Body Area Network

Wade

Asada

2007

IEEE Pervasive Comput.

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“…Instead, we use conductive fabrics (CF) for power and data transmission since they bend and behave like normal fabrics that would be worn by the user. The electrical properties of such fabrics have been evaluated, and one limitation is that they have much higher resistivity than typical copper wire of nominal gauges [5] [6]. Furthermore, it is difficult to address the issue of how to properly electrically connect and route CF strands.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic analysis and design of a cable-free body area network of sensor nodes using 2D communication over conductive fabric sheets

Wade

Asada

2005

2005 IEEE/RSJ International Conference on Intelligent Robots and Systems

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In recent years, wearable sensing networks have been the focus of the biotechnology industry. A continuing the question is how best to integrate electronic components with the human body. The authors have devised a body area network that relies on two innovations; the use of conductive fabrics, and the use of DC powerline communication. By combining these innovations, we have created a truly wearable network that allows full generality of sensor location, spatial distribution of the medium to reduce overall bulk, and maintains sufficiently low line impedance for simultaneous power and data delivery over a single conductor. We have created a method for analysis of the transmission properties of conductive fabric garments. In addition, we evaluate the basic transmission line characteristics of the garment. Finally, we present a verification of our model and initial experimental results.

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“…They developed a prototype for measuring electrical resistance on conductive fabric. Improving textile materials' conductivity using polypyrrole treatment is investigated by Kaynak and Beltran as well [17]. They analysed the relationship between surface resistivity and concentration of conductive elements used.…”

Section: Introductionmentioning

confidence: 99%

The anisotropic structure of electro conductive leather studied by Van der Pauw method

Shabani

Hylli

Kazani

et al. 2019

TLR

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Determining the surface resistance of electro conductive refined natural leather materials is in the focus of this paper. Natural leather samples are initially transformed to conductive by applying chemical treatment process known as polymerization. Due to the existence of various techniques for measuring electrical resistance of conductive materials, we are focused on measuring surface resistance by arranging four electrodes in the edges of square leather samples, also known as Van der Pauw method. Improving the results accuracy, we use a multi-variant electrode placement over the sample edges. The result is the average of all results gained for different placements. Moreover, we use this electrode placement technique to analyse the anisotropy of conductive samples. The results of this research provide important knowledge about leather chemical treatment and its electrical proprieties.

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Anisotropy in electric properties of fabrics containing new conductive fibers

Cited by 16 publications

References 3 publications

Conductive Fabric Garment for a Cable-Free Body Area Network

Conductive Fabric Garment for a Cable-Free Body Area Network

Electrostatic analysis and design of a cable-free body area network of sensor nodes using 2D communication over conductive fabric sheets

The anisotropic structure of electro conductive leather studied by Van der Pauw method

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