Transfer function of electromechanical-tactile stimulation

The overall transfer function for a tactile vision information system (TVIS) used as an aid to the visually impaired is described. Included in this transfer function are the electromechanical vibrators, the skin interface, and the tactile skin sensors. In previous work, individual components have be...

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Bibliographic Details
Published inProceedings of the 1988 Fourteenth Annual Northeast Bioengineering Conference pp. 142 - 145
Main Authors Jarmul, E., Nunziata, E., Perez, C., Lipetz, L.E., Weed, H.R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1988
Subjects
Electromechanical sensors
Information analysis
Information systems
Machine vision
Optical noise
Skin
Stimulated emission
Tactile sensors
Transfer functions
TV interference
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Summary:The overall transfer function for a tactile vision information system (TVIS) used as an aid to the visually impaired is described. Included in this transfer function are the electromechanical vibrators, the skin interface, and the tactile skin sensors. In previous work, individual components have been analyzed, but no attempt has been made to evaluate the process in its entirety. Each transfer function is also analyzed in detail to describe the input-output relationships important in the effective transfer of optical information in a TVIS. The overall transfer function is developed and its equation is given. Here, a theoretically derived stimulation waveform was used for the vibrator driving current. Under computer simulation, this waveform reduces the vibrator noise levels to less than 70 dB(C) while requiring only 3 mW of power for each vibrator to elicit tactile sensation.< >
DOI:10.1109/NEBC.1988.19368