P3.2 - Ultrasonic time reversal for haptic interaction
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P3 - Ultrasound
- S. Wöckel, H. Arndt, U. Steinmann, B. Bedürftig, J. Auge - Institut für Automation und Kommunikation (ifak) e.V. Magdeburg, Magdeburg (Germany)
- 769 - 774
The reversibility of an acoustic wave can be used to refocus a signal on a point by time reversal (TR) techniques. Numerous application fields are connected to this technology, such as medical intervention, non-destructive testing or impact localization on touchscreen systems. Latter technology recently gains increasing attention. Normally touchscreens require the users to visually control their interaction. However, if this is not possible, e.g. in cases of individual physical constraints or environmental conditions, the usability is limited due to a missing alternative feedback. A lot of simple localization approaches exists using the acoustic interaction of a finger impact. But the reverse local haptic feedback with elastic waves is not sufficiently supported up to now. Here, TR can provide a user-oriented support by realizing vibro-tactile sensations at virtual buttons or other control elements on the screen. Therefore the contribution addresses the local haptic feedback on panels by using a limited number of acoustic transducers, supported by simulation-based studies.