- Tytuł:
- Investigation of the piezoelectric thimble tactile device operating modes
- Autorzy:
-
Bansevicius, R.
Dragasius, E.
Grigas, V.
Jurenas, V.
Mazeika, D.
Zvironas, A. - Powiązania:
- https://bibliotekanauki.pl/articles/307079.pdf
- Data publikacji:
- 2014
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
skóra
wymuszenie harmoniczne
analiza elementów skończonych
tactile sensation
skin strain
harmonic excitation
finite element analysis - Opis:
- A multifunctional device to transfer graphical or text information for blind or visually impaired is presented. The prototype using tactile perception has been designed where information displayed on the screen of electronic device (mobile phone, PC) is transferred by oscillating needle, touching the fingertip. Having the aim to define optimal parameters of the fingertip excitation by needle, the computational analysis of different excitation modes has been carried out. A 3D solid computational finite element model of the skin segment, comprising four main fingertip skin layers (stratum corneum, epidermis, dermis and hypodermis) was built by using ANSYS Workbench FEA software. Harmonic analysis of its stress–strain state under excitation with different frequency (up to 10000 Hz) and harmonic force (0.01 N), acting outer stratum corneum layer in normal direction at one, two or three points has been performed. The influence of the mode of dynamic loading of skin was evaluated (in terms of the tactile signal level) on the basis of the normal and shear elastic strain in dermis, where mechanoreceptors are placed. It is shown that the tactile perception of information, delivered by three vibrating pins, may be influenced by configuration of excitation points (their number and phase of loading) and the frequency of excitation.
- Źródło:
-
Acta of Bioengineering and Biomechanics; 2014, 16, 3; 135-143
1509-409X
2450-6303 - Pojawia się w:
- Acta of Bioengineering and Biomechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł