Necessary spatial resolution for realistic tactile feeling display

Asamura, N.; Shinohara, Takayuki; Tojo, Yuriko; Koshida, Nobuyoshi; Shinoda, Hiroyuki

doi:10.1109/robot.2001.932878

Cited by 29 publications

(6 citation statements)

References 12 publications

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“…003 large number of identical but individually addressable tactile stimulators is desirable, especially when used for sensory substitution for the visually impaired community. Among various tactile displays that are pneumatically, magnetically, thermally, or piezoelectrically driven [2,[6][7][8], electrotactile displays have the advantages of simple structures, low power consumption, and low cost when the number of stimulators increases [1]. Furthermore, micromachining may be employed to fabricate high-density electrotactile stimulator arrays with the potential of further cost reduction and miniaturization.…”

Section: Introductionmentioning

confidence: 99%

Tactile displays: Overview and recent advances

2008

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Tactation is the sensation perceived by the sense of touch, and is based on the skin's receptors. Touch is a common medium used by the general population and the sensory impaired. Tactile substitution can be used by the blind or deaf in order to: (a) enhance access to computer graphical user interfaces and (b) enhance mobility in controlled environments.The skin nerves can be stimulated through six types of receptors by mechanical, electrical, or thermal stimuli. Modalities, such as vibration and pressure, can stimulate these receptors. Advances in tactile communication using implementations of the actuating devices have been developed via several new technologies. These technologies include static or vibrating pins, focused ultrasound, electrical stimulation, surface acoustic waves, and other. This paper is a review of the state-of-the-art in the physiological and technological principles, considerations and characteristics, as well as latest implementations of microactuator-based tactile graphic displays. We also review fabrication technologies, in order to demonstrate the potential and limitations in tactile applications.

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Section: Introductionmentioning

confidence: 99%

Tactile displays: Overview and recent advances

2008

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“…However, these findings can be related to the spatial distribution of the receptors perceiving the stimuli. Studies have shown that mechanoreceptors are not evenly distributed on the palm as their densities increase towards the fingertips [1,29]. Moreover, the ridges on the palm may have played a role on increasing the intensity of perception for the "large" stimulation shapes.…”

Section: Discussionmentioning

confidence: 99%

A 2-DoF Skin Stretch Display on Palm: Effect of Stimulation Shape, Speed and Intensity

Manasrah

Alkhalil

2020

Lecture Notes in Computer Science

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Skin stretch has been widely utilized as a tactile display in different haptic applications. However, there has been little research focusing on skin stretch as a modality on the palm of the hand. In this study, a two dimensional tactor apparatus was designed and built to investigate the effects of stimulation speeds, shapes and intensities of skin stretch display on the palm. The tactor moved across the palm at different speeds to create stimulation shapes on the skin. Subjects reported the intensity of perceived stimuli and predicted speed rate of the tactor and stimulation shape and size. The results showed that there were statistically significant differences in the intensity of perceived tactile displays between different stimulation shapes and sizes. The results also showed the sizes and intensity of the stimulus grow larger with slower tactor speeds.

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“…The mechanoreceptors responsible for vibrotactile sensation are the rapidly adapting (RA) and Pacinian corpuscle (PC) receptors with perceptible frequencies ranging from 3 to 100 and 100 to 400 Hz, respectively (Choi and Kuchenbecker, 2013). Therefore, for effective tactile sensing, the operational frequency range is selected between one of the two along with a minimum spatial resolution of 1-2 mm for human fingers (Kaczmarek et al, 1991;Asamura et al, 2001). The majority of vibrotactile systems developed so far have used electromagnetic eccentric motors (Shahoian et al, 2004), electrostatic piezo actuators, or electro-active polymer-based actuators (Koo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Soft Pneumatic Actuator Skin with Piezoelectric Sensors for Vibrotactile Feedback

Sonar

Paik

2016

Front. Robot. AI

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The latest wearable technologies demand more intuitive and sophisticated interfaces for communication, sensing, and feedback closer to the body. Evidently, such interfaces require flexibility and conformity without losing their functionality even on rigid surfaces. Although there have been various research efforts in creating tactile feedback to improve various haptic interfaces and master-slave manipulators, we are yet to see a comprehensive device that can both supply vibratory actuation and tactile sensing. This paper describes a soft pneumatic actuator (SPA)-based skin prototype that allows bidirectional tactile information transfer to facilitate simpler and responsive wearable interface. We describe the design and fabrication of a 1.4 mm-thick vibratory SPAskin that is integrated with piezoelectric sensors. We examine in detail the mechanical performance compared to the SPA model and the sensitivity of the sensors for the application in vibrotactile feedback. Experimental findings show that this ultra-thin SPA and the unique integration process of the discrete lead zirconate titanate (PZT)-based piezoelectric sensors achieve high resolution of soft contact sensing as well as accurate control on vibrotactile feedback by closing the control loop.

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Necessary spatial resolution for realistic tactile feeling display

Cited by 29 publications

References 12 publications

Tactile displays: Overview and recent advances

Tactile displays: Overview and recent advances

A 2-DoF Skin Stretch Display on Palm: Effect of Stimulation Shape, Speed and Intensity

Soft Pneumatic Actuator Skin with Piezoelectric Sensors for Vibrotactile Feedback

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