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In this paper, we describe the Tampere University of Technology's involvement in the research of machine washable and wirelessly rechargeable wearable technology and using mobile devices as input and output interface and as means of data transfer and processing for wearable applications.
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... proved the hanger concept to be quite suitable for recharging the shirt. The spiral coils need to be researched further, though. The first prototypes were coiled by hand from copper wire, but the best alternative proved to be to etch an FCB with a spiral coil; thus the recharging electronics as well as the battery could all be fitted to one board (Fig. 6). The current system takes about 3 hours to recharge the empty Lithium-polymer battery and depending on the amount of ambient noise the Noise Shirt will run from 2 to 4 ...
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Citations
... Let us begin by exploring the first question. The wireless communication between the two garments can be achieved in a similar fashion than what Iso-Ketola et al. present in [6]. In their article, a mobile phone is used as a communication bridge between a smart garment and the Internet. ...
This position paper discusses how computer science and fashion design can gracefully enrich each other to address privacy, non-invasiveness and nondisruptiveness issues. A use case providing intimate, remote communication for a couple is described, as well as potential tracks to solve this use case from a technological as well as fashion design points of view. We show that fashion designers closely collaborating with computer scientists can help address complex issues such as privacy when integrating smart garments together.
... However, short term storage in drawers poses a problem for active garment integrated devices requiring high charging currents, especially if there is more then one garment which requires charging. Only small amounts of power can be made available parasitically and inductive charging requires the addition of prohibitively large receiver coils in the garments [7]. ...
... Three prior projects have addressed embedding connectivity into the hanger and wardrobe space. Iso-Ketola et al. [7] developed a hanger-based inductive recharging system for smart clothing, a novel concept and prototype based on similar ideals to those presented here: a simple, easy-to-use maintenance system that builds on pre-existing concepts of garment care and storage. Iso-Ketola et al.'s work is primarily concerned with inductive charging and washability of smart garments; whereas our investigation is focused on conductive charging, data transmission, and maintenance of multiple smart garments. ...
Ease of maintenance and management of smart garments (garments with integrated electronics) is crucial to their user acceptability and commercial viability. This paper presents a system that addresses user needs of easy garment charging, storage, and synchronization. The HBar smart hanger system is a novel system consisting of a set of augmented garments and coat hangers to fulfil the requirements of a smart garment management system.
Wireless technology greatly created a transformation in healthcare and thereby removed the usage of cables, which were typically employed as an interweave amid hospital patients, thereby enabling the whole thing from remote access to connectivity amid monitoring devices. Numerous portable medical gadgets integrate wireless technology that might result in risks for life-support gadgets and similar applications. For ensuring amenability and preventing interferences, a need to validate the medical device with electromagnetic compatibility standards becomes mandatory. Protective patient privacy is deemed to be an energetic characteristic towards isolated patient monitoring schemes. Considering the rise in the quantity of feasible wireless medicinal products, they engage different wireless standards, and measured data have been transported at dissimilar rates. Thus, the foremost significant movement is towards supplementing the quantity of integration in wireless medical monitoring schemes. Similarly, the applications of implantable and ingestible wireless medical approaches are becoming increased, as they offer access to data collecting and data which was previously dreadful. Hence, there becomes a bigger possibility of improving the exactness of wireless positioning arrangements. In this article, a review on the evaluation of wireless medical monitoring schemes and analysis over shared operating frequency bands has been evaluated in a state-of-art manner; thereby, every structure has the potential to assist doctors for improving the dominance in lives of patients, thus application developments are properly discussed for progressing with these implements. Every device considered in this article is identical with each other in their elementary contrivances. However, they get fine-tuned in service towards different applications. Hence, every device entailed here is positioned to fit within the operating frequencies, either at 2.4 GHz or 3.1 GHz to 10.6 GHz. A brief review has been made on these upcoming and prevailing strategies, like a wireless blood pressure cuff, wireless oximeter, wireless electrocardiogram monitoring, wireless electroencephalography headset, wireless glucometer, wireless blood pressure monitoring system, wireless alcoholmeter, wireless capsule camera, wireless triangulating position of objective instruments, wireless sensor network-based monitoring scheme, wireless posture monitoring scheme, wireless acceleration sensor, wireless gait analysis arrangement, wireless telemetry strain gauging humerus implant, wireless monitoring using a microelectromechanical system and application-specific integrated circuit, wireless telemetry stress monitoring knee implant, and wireless protein detection device.
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We present the design, development and evaluation of a bi-directional inductive power transfer circuit for prototyping purposes in the watt-range. Our device does not require any configuration and is intended for the development of wearable and tangible systems. Our approach allows a bi-directional power flow without any change in the circuit, such that the same circuit can be used for charging and discharging a battery. The contribution of this work is an enabling technology for researchers and practitioners in the fields of Wearable Electronics, Ubiquitous Computing and Human-Computer Interaction interested in exploring new interactions powered by watt-range inductive links. It enables smaller battery sizes, and therefore lighter devices, as the power can be distributed in a way that has not been feasible before. We discuss the motivations, technical details and the workshop evaluating our inductive approach.
The interfacial reliability between hot-melt polyamides resin and textile is studied to investigate whether hot-melt polyamides resin is useful as an encapsulation material of wearable electronic devices. Four kinds of hot-melt polyamides resins and six kinds of textile fabrics are used, and the test sample is fabricated by molding polyamides resin on top of textile. To confirm the mechanical reliability between polyamides resin and textile under water washing and dry cleaning condition, the adhesion strength is measured by 90° peel test not only at initial state but also after exposing the sample to moisture and heat. As a result, it can be seen after high temperature and humidity test that peel strength is degraded and fracture mode can be changed from adhesive failure to cohesive failure according to textile fabric. Also, the optimal combination of polyamides resin and textile for better peel strength is obtained.
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In this paper, an innovative measuring platform for the detection of movements of legs and hips is presented and tested. The system consists of washable pants with built-in acceleration sensors and control and evaluation electronics and is powered by detachable, rechargeable batteries. It measures acceleration at the hip and legs in three directions in space. The movement detection is based on recognizing, by means of the sensors, the posture and acceleration magnitudes usually associated to a specific movement. The raw sensor data are saved on the integrated MicroSD card for posterior analyze in a computer. With the help of mathematical functions presented in this paper, the timely occurrence of a specific movement can finally be detected. The whole system (pants, sensors and electronics) is washable due to component's encapsulation. Thanks to an optimized production process, the system can be affordably reproduced in low volume productions and can be adjusted for multiple purposes. © 2011 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.
Flexible microstrip antenna arrays have become a necessity in today’s miniaturized biomedical wireless devices. Implantable and wearable biomedical devices such as pacemakers, drug delivery systems, heart rate monitors, and respiratory monitors need to communicate with exterior base station devices and relayed to healthcare professionals. In this paper, multiple flexible microstrip antenna arrays are designed and simulated for these applications. The frequency bands of 5.2 GHz and 5.8 GHz are utilized to provide a high bandwidth communication link. CST Microwave Studio was used for the modeling and simulation of the antennas. The reflection coefficient, gain, and correlation coefficient for each antenna are presented and discussed. The presented antennas can be utilized together as an array for enhanced gain or independently in a Multiple Input Multiple Output (MIMO) system.
