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Wyszukujesz frazę "wearable systems" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Assessment of cardiovascular risk in assisted living
Autorzy:
Wtorek, J.
Bujnowski, A.
Rumiński, J.
Poliński, A.
Kaczmarek, M.
Nowakowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/220605.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wearable systems
cardiovascular risk
body sensor network
Opis:
Disorders of the heart and blood vessels are the leading cause of health problems and death. Early detection of them is extremely valuable as it can prevent serious incidents (e.g. heart attack, stroke) and associated complications. This requires extending the typical mobile monitoring methods (e.g. Holter ECG, tele-ECG) by introduction of integrated, multiparametric solutions for continuous monitoring of the cardiovascular system. In this paper we propose the wearable system that integrates measurements of cardiac data with actual estimation of the cardiovascular risk level. It consists of two wirelessly connected devices, one designed in the form of a necklace, the another one in the form of a bracelet (wrist watch). These devices enable continuous measurement of electrocardiographic, plethysmographic (impedance-based and optical-based) and accelerometric signals. Collected signals and calculated parameters indicate the electrical and mechanical state of the heart and are processed to estimate a risk level. Depending on the risk level an appropriate alert is triggered and transmitted to predefined users (e.g. emergency departments, the family doctor, etc.).
Źródło:
Metrology and Measurement Systems; 2012, 19, 2; 231-244
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja systemu sterowania urządzenia do wspomagania chodu
Concept of the control system of an orthotic robot
Autorzy:
Wierciak, J.
Jasińska-Choromańska, D
Szykiedans, K.
Bartyś, M.
Powiązania:
https://bibliotekanauki.pl/articles/152755.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
urządzenia mechatroniczne
systemy samo optymalizujące
urządzenia do wspomagania chodu
systemy komunikacyjne
mechatronic devices
wearable robots
self-optimizing systems
Fieldbus system
Opis:
Mechatronika, jako koncepcja budowy urządzeń jest obecna niemal we wszystkich działach techniki. Rozwój mikroprocesorowych układów przetwarzania danych, a także postęp w dziedzinie budowy układów wykonawczych i pomiarowych stwarzają możliwości realizowania przez urządzenia funkcji, które jeszcze do niedawna pozostawały jedynie w sferze marzeń. Postęp nie ominął również medycyny, a ściślej wyposażenia technicznego pracującego na rzecz osób chorych. Roboty ortotyczne, których szybki rozwój następuje w wielu ośrodkach naukowych na całym świecie, zastępują u ludzi utracone funkcje ruchowe. Autorzy pracują nad urządzeniem do pionizacji i wymuszania chodu osób z bezwładem nóg. W artykule przedstawiono koncepcję systemu sterowania opracowywanego urządzenia.
Mechatronics seems to be nowadays the leading idea of design of machines and devices. Integration of mechanic devices with the powerful microelectronic technology forced synergy effects resulting in new applications also in medical domain. Here, wearable robots are most spectacular examples. They are person-oriented robots that may be defined as those worn by human operators, whether to support the function of a limb or to replace it completely. The authors focussed their attention on the development of an orthotic robot suited for people with paresis of lower limbs (Fig. 1). The role of the robot is to improve standard of life of handicapped people. However, for safety reasons, its usage needs additional assistance of third party persons. It leads to a conclusion, that control system of the device should be designed in such a way that movements of limbs are allowed only and only in cases when all safety conditions are fulfilled. Upon this statement, the device under design can be classified as a self optimising system. The general structure of such a system is shown in Fig. 2. This system consists of: knowledge base, multi- control subsystem, communication ports and inference machines. The block diagram of automatic control system is depicted in Fig. 3. The main purpose of knowledge base is to store and update reference data for decisions upon the device performance. This data contains records of values of selected signals, collecting information about the state of the device and a robot user, in order to detect non-safety behaviour. Tilt of the user's body and acceleration of its certain parts, as well as reaction forces between feet and crushes against ground can be considered as signals useful for decision making. A structure of the control system meeting the above considerations is presented in Fig. 4. A brief survey of data transmission protocols was carried out. A survey was focused on systems used for industrial applications taking into considerations its approved high immune against electromagnetic field transients and easiness of building redundant structures of communication networks and controllers. Finally, CAN standard was proposed as a communication protocol for the device broadly used in automotive industry (Fig. 5). In the conclusions future works are presented together with the risk analysis.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 9, 9; 1016-1019
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inertial Sensors Integrated with Clothing to Localize People Inside Buildings
Autorzy:
Kawecki, Jaroslaw
Oleksy, Pawel
Januszkiewicz, Lukasz
Powiązania:
https://bibliotekanauki.pl/articles/227250.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
inertial sensors
wearable systems
step length estimation
indoor localization
localization system
intelligent T-shirt
Opis:
This article presents a wearable system that localizes people in the indoor environment, using data from inertial sensors. The sensors measure the parameters of human motion, tracking the movements of the torso and foot. For this purpose, they were integrated with shirt and the shoe insole. The values of acceleration measured by the sensors are sent via Bluetooth to a smartphone. The localization algorithm implemented on the smartphone, presented here, merges data from the shirt and the shoe to track the steps made by the user and filter out the localization errors caused by movements the shirt and torso. The experimental verification of the algorithm is also presented.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 1; 53-58
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Miniaturized Wearable Fractal Patch Antenna for Body Area Network Applications
Autorzy:
Jain, Vikas
Dhaliwal, Balwinder Singh
Powiązania:
https://bibliotekanauki.pl/articles/1844620.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wearable antenna
conformal antenna
biomedical systems
body area networks
fractal antenna
Opis:
This article presents the design of a miniaturized wearable patch antenna to be utilized for the body area network (BAN) applications. To reduce the size of the antenna a crown fractal geometry antenna design technique has been adopted, and which resulted in a size reduction of 26.85%. Further, the polyester cloth has been used as the substrate of the antenna to make the proposed antenna a flexible one, and suitable for wearable biomedical devices. The designed antenna functions for the 2.45 GHz ISM band and has the gain and bandwidth of 4.54 dB and 131 MHz respectively, covering the entire ISM band. The antenna characteristics like return loss (S11), directivity and radiation pattern have been simulated and analyzed. Specific absorption rate (SAR) and front to back ratio (FBR) of the proposed antenna at the human body tissue model (HBTM) in the planer and different bending conditions of the antenna have also simulated and analyzed, and the proposed antenna fulfils the desired design standards.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 2; 149-154
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
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