Kurtz, Peter

Lutherdt, Stefan

Witte, Hartmut

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PROCEEDINGS            Faculty of Mechanical Engineering   ..........................................................................................  PROSPECTS IN MECHANICAL ENGINEERING  8 - 12 September 2008            www.tu-ilmenau.de     Home / Index: http://www.db-thueringen.de/servlets/DocumentServlet?id=17534 53. IWKInternationales Wissenschaftliches KolloquiumInternational Scientific ColloquiumPublished by Impressum  Publisher Der Rektor der Technischen Universität Ilmenau Herausgeber Univ.-Prof. Dr. rer. nat. habil. Dr. h. c. Prof. h. c. Peter Scharff  Editor Referat Marketing und Studentische Angelegenheiten Redaktion Andrea Schneider    Fakultät für Maschinenbau Univ.-Prof. Dr.-Ing. habil. Peter Kurz, Univ.-Prof. Dr.-Ing. habil. Rainer Grünwald, Univ.-Prof. Dr.-Ing. habil. Prof. h. c. Dr. h. c. mult. Gerd Jäger, Dr.-Ing Beate Schlütter, Dipl.-Ing. Silke Stauche  Editorial Deadline  17. August 2008 Redaktionsschluss  Publishing House Verlag ISLE, Betriebsstätte des ISLE e.V. Verlag Werner-von-Siemens-Str. 16, 98693 llmenau   CD-ROM-Version:  Implementation  Technische Universität Ilmenau Realisierung Christian Weigel, Helge Drumm  Production CDA Datenträger Albrechts GmbH, 98529 Suhl/Albrechts Herstellung  ISBN: 978-3-938843-40-6 (CD-ROM-Version)   Online-Version:  Implementation Universitätsbibliothek Ilmenau Realisierung  Postfach 10 05 65  98684 Ilmenau       © Technische Universität Ilmenau (Thür.) 2008  The content of the CD-ROM and online-documents are copyright protected by law. Der Inhalt der CD-ROM und die Online-Dokumente sind urheberrechtlich geschützt.   Home / Index: http://www.db-thueringen.de/servlets/DocumentServlet?id=17534 53rd Internationales Wissenschaftliches Kolloquium Technische Universität Ilmenau  08 – 12 September 2008  S. Lutherdt, H. Witte, P. Kurtz   User-oriented design of I/O-interfaces for assistance systems by example of vibration output   Initiation and motivation   A frequently appearing problem at assistance systems are non-adequate and badly to tasks and environments adapted utilisation interfaces for the respective users. Re-searches for instance had shown that so-called “standard components” like mini-computers (PDAs) are a few or not usable for mobile applications (without further adaption to tasks and users) [1]. Otherwise already could be shown that it is possible to adapt these not well-appro-priate utilisation input interfaces even for users with especially strong requirements (like blinds and visual impaired) and nearby a high level of acceptation is reachable [2]. The same result should be reached now for output interfaces by applying a com-paring methodology to expand the existing system about necessary output compo-nents.  Description of the output interface  Exemplary for any assistance systems an additional vibration output interface was developed under the special focus of use by several handicapped users within a tou-ristic assistance system (TAS [2]). The opportunities of his interface additional to au-dio-visual outputs also realising the “two-sense”-principle. The use of this added (haptic) sensual channel allows using the hardware of the assistance system also for sensual shortened user groups like blinds or high-grade hearing and visual impaired. And by the use of more other interfaces the application spectrum can be broaden. (see [2], [3]). The vibration output interface shown in fig. 1 will be coupled wireless to the existing system via Bluetooth™-standard which is already used for other components. Hints and information which are been presented audio-visually, are transmitted at the same time to interface control unit. There it will be encoded by a microcontroller. With this some special and by an internal priority list as “very important” categorised informa-tion like “Stop” or “Danger” will additional indicate by vibration patterns. For these outputs different patterns were tested and the patterns with the highest recognition rate for the respective information were chosen (all pre-selected patterns had ≥70%). Figure 1: Block diagram of the laboratory sample (consists of a PDA, control unit and vibration belt)  Appreciation and outlook  Evaluation of the described haptic output interface had shown that it is possible to make assistance systems useful and usable also for highly heterogeneous user groups even by use of standard components if a systematic user-centred design process will be applied. The closing evaluation step with the addressed user groups in natural surroundings still has to be executed, and also some modifications to link the interface with the respective used assistance system will be implemented.  References:    [1] Larni J.: Working with a PDA while walking. In: Proceedings of the WWCS2004 Working with Computing Systems, Kuala Lumpur 2004. [2] Roß F. & Lutherdt S: Abschlussbericht „TAS - Touristisches AssistenzSystem für barrierefreien Zugang zu Urlaubs-, Freizeit- und Bildungsaktivitäten“, Förderkennzeichen 03I2808. Technische Universität Ilmenau 2006. [3] Lutherdt S. & Witte H.: TAS - Touristisches Assistenzsystem für Urlaub, Freizeit- und Bildungsaktivitäten – Ein Inno-Regio-Projekt der TU Ilmenau –. In: Leidner R. et. al.: Von Barrierefreiheit zum Design für Alle – Erfahrungen aus Forschung und Praxis. Arbeitsgemeinschaft Angewandte Geografie Münster e.V., Arbeitsberichte Heft 38 2007.   Authors:    Dipl.-Ing. Stefan Lutherdt1 Univ.-Prof. Dipl.-Ing. Dr. med. (habil.) Hartmut Witte1 Univ.-Prof. Dr.-Ing. habil. Peter Kurtz2 Technische Universität Ilmenau, Fakultät für Maschinenbau Fachgebiete Arbeitswissenschaft2 und Biomechatronik1 PF 100556, D-98684 Ilmenau  Phone: 03677-692457 Email: stefan.lutherdt@tu-ilmenau.de Vibrational  Output BluetoothTM TAS-PDA 

User-oriented design of I/O-interfaces for assistance systems by example of vibration output

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User-oriented design of I/O-interfaces for assistance systems by example of vibration output

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