Tactile objects based on an amplitude disturbed diffraction pattern method
dc.contributor.author | LIU, Yuan |
dc.contributor.author
hal.structure.identifier | NIKOLOVSKI, Jean-Pierre
|
dc.contributor.author
hal.structure.identifier | HAFEZ, Moustapha
|
dc.contributor.author | VERGÉ, Michel |
dc.contributor.author
hal.structure.identifier | MECHBAL, Nazih
|
dc.date.accessioned | 2012 |
dc.date.available | 2012 |
dc.date.issued | 2009 |
dc.identifier.citation | Applied Physics Letters, vol. 95, n°25 |
dc.identifier.uri | http://hdl.handle.net/10985/6519 |
dc.description.abstract | Tactile sensing is becoming widely used in human-computer interfaces. Recent advances in acoustic approaches demonstrated the possibilities to transform ordinary solid objects into interactive interfaces. This letter proposes a static finger contact localization process using an amplitude disturbed diffraction pattern method. The localization method is based on the following physical phenomenon: a finger contact modifies the energy distribution of acoustic wave in a solid; these variations depend on the wave frequency and the contact position. The presented method first consists of exciting the object with an acoustic signal with plural frequency components. In a second step, a measured acoustic signal is compared with prerecorded values to deduce the contact position. This position is then used for human-machine interaction (e.g., finger tracking on computer screen). The selection of excitation signals is discussed and a frequency choice criterion based on contrast value is proposed. Tests on a sandwich plate (liquid crystal display screen) prove the simplicity and easiness to apply the process in various solids. |
dc.language.iso | en_US |
dc.rights | Post-print |
dc.title | Tactile objects based on an amplitude disturbed diffraction pattern method |
dc.identifier.doi | 10.1063/1.3276549 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Paris |
dc.subject.hal | Physique |
hal.identifier | hal-00749094 |
hal.version | 1 |
hal.status | accept |