Abstract
Resonant vibrotactile microbeams use the concept of resonance to excite the vibration of cantilever beams, which correspond to pixels of an image. The primary benefit of this type of tactile display is its potential for high resolution. This paper presents the concept of the proposed system and human skin contact experiments to explore user perception challenges related to beam vibration during skin contact. The human skin contact experiments can be described in five phases: dried skin contact to metal beam tips, wet and soaped skin contact to metal beam tips, skin contact with a constraint, normal force measurement, and skin contact to the tips of silicone rubber beams attached to metal beam tips. Experimental results are analyzed to determine in what cases of skin contact the beams stop vibrating. It is found that the addition of silicone rubber beams allows the primary metal beams to continue vibrating while in contact with skin. Thus, the vibration response of a metal beam with silicone rubber beams is investigated for the better understanding of the effect of silicone rubber beams on the metal beam vibration.
Highlights
Haptic displays have been extensively explored in assistive technology solutions for individuals with visual impairments
A material known as ‘dragon skin 10 very fast’, a type of silicone rubber, is selected to make a silicone rubber beam, which is attached to a metal beam tip so that a finger could only touch the tips of silicone rubber beams and the normal force of the finger would not be exerted on the metal beam tips directly
To solve the micro-meso scale beam vibration stop problem by skin contact, the human skin contact experiments are presented: dry skin contact, wet and soaped skin contact, skin contact to a constraint and metal beam tips, normal force measurement, and skin contact to silicone rubber beam tips attached to metal beam tips
Summary
Haptic displays have been extensively explored in assistive technology solutions for individuals with visual impairments. Tactile vision sensory substitution devices use haptic displays to present visual images to the sense of touch. This ‘haptic display’ area of research can be divided into two possible approaches: (1) conversion of information about pictures to touch, or (2) conversion of complete pictures to touch. Whilehigh the electrode approach is typically limited can to placement tongue due to its wetness and, conductivity, vibration motor devices be placedon onthe any area of skin. As well as 400 individual pulse-width modulation width modulation signals and their corresponding signals and their corresponding clocks To solve these problems and achieve high resolution, we have proposed the resonant microbeam. The forced response of a metal beam depending on the silicone rubber beam length is presented
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