Wearable Range-Vibrotactile Field: Design and Evaluation
Touch is one of the most natural methods of navigation available to the blind. In this paper, we propose a method to enhance a person’s use of touch by placing range sensors coupled with vibrators throughout their body. This would allow them to be able to feel objects and obstacles in close proximity to them, without having to physically touch them. In order to make effective use of this vibrotactile approach, it is necessary to discern the perceptual abilities of a person wearing small vibrators on different parts of their body. To do this, we designed a shirt with small vibrators placed on the wrists, elbows, and shoulders, and ran an efficient staircase PEST algorithm to determine their sensitivities on those parts of their body.
KeywordsSpatial Navigation Vibrotactile Threshold Alternative Perception Vibrotactile Feedback Pulse Width Modulation Signal
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- 1.World Health Organization, Visual impairment and blindness, http://www.who.int/mediacentre/factsheets/fs282/en/
- 2.Second Sight, http://www.2-sight.com
- 3.Wicab, Inc., Brainport Vision Technology, http://vision.wicab.com/technology/
- 4.Gonzalez-Mora, J.L., et al.: Seeing the world by hearing: Virtual Acoustic Space (VAS) a new space perception system for blind people. In: Information and Communication Technologies, pp. 837–842 (2006)Google Scholar
- 7.Torres-Gil, M.A., Casanova-Gonzalez, O., González-Mora, J.L.: Applications of virtual reality for visually impaired people. WSEAS Transactions on Computers 9(2), 184–193 (2010)Google Scholar
- 8.Lindeman, R.W., Yanagida, Y., Noma, H., Hosaka, K.: Wearable vibrotactile systems for virtual contact and information display. Virtual Reality, 203–213 (2006)Google Scholar
- 9.Sch, S. & Hulin, T.: Evaluation of vibrotactile feedback to the human arm. Configurations 3–6 (2006), http://lsc.univ-evry.fr/~eurohaptics/upload/cd/papers/f78.pdf
- 10.Lee, B.-C., Chen, S., Sienko, K.H.: A Wearable device for real-Time motion error detection and vibrotactile instructional cuing. IEEE Trans. Neural Systems and Rehab. Eng. 19(4) (2011)Google Scholar
- 12.Mann, S., et al.: Blind navigation with a wearable range camera and vibrotactile helmet. In: Proceedings of the 19th International Conference on Multimedia (2011)Google Scholar