SmartPowerchair: Characterization and Usability of a Pervasive System of Systems

A characterization of a pervasive system of systems (SoS) called the SmartPowerchair is presented, integrating pervasive technologies into a standard powered wheelchair (powerchair). The SmartPowerchair can be characterized as a SoS due to focusing on selection of the correct combination of independent and interoperable systems that are networked for a period of time to achieve the specific overall goal of enhancing the quality of life for people with disability. A high-level 2-D SoS model for the SmartPowerchair is developed to illustrate the different SoS lifecycle stages and levels. The results from a requirements elicitation study consisting of a survey targeting powerchair users were the input to a hierarchical task analysis defining the supported tasks of the SmartPowerchair. The system architecture of one constituent system (SmartATRS) is described as well as the results of a usability evaluation containing workload measurements. The establishment of the SmartAbility framework was the outcome of the evaluation results that concluded range of movement (ROM) was the determinant of suitable technologies for people with disability. The framework illustrates how a SoS approach can be applied to disability to recommend interaction mediums, technologies, and tasks depending on the disability, impairments, and ROM of the user. The approach, therefore, creates a “recommender system” by viewing disability type, impairments, ROM, interaction medium, technologies, and tasks as constituent systems that interact together in a SoS.

[1]  Michael Henshaw,et al.  System of Systems: “Defining the system of interest” , 2012, 2012 7th International Conference on System of Systems Engineering (SoSE).

[2]  Charles B. Keating,et al.  Emergence in System of Systems , 2008 .

[3]  John R. Spletzer,et al.  Autonomous docking of a smart wheelchair for the Automated Transport and Retrieval System (ATRS) , 2008, J. Field Robotics.

[4]  Huseyin Dogan,et al.  SmartPowerchair: A pervasive system of systems , 2015, 2015 10th System of Systems Engineering Conference (SoSE).

[5]  Susan Lilly,et al.  Use case pitfalls: top 10 problems from real projects using use cases , 1999, Proceedings of Technology of Object-Oriented Languages and Systems - TOOLS 30 (Cat. No.PR00278).

[6]  Michael L Boninger,et al.  Recent trends in assistive technology for mobility , 2012, Journal of NeuroEngineering and Rehabilitation.

[7]  J. Hoey,et al.  An Intelligent Powered Wheelchair to Enable Mobility of Cognitively Impaired Older Adults: An Anticollision System , 2007, IEEE Transactions on Neural Systems and Rehabilitation Engineering.

[8]  Vangelis Metsis,et al.  Towards an evaluation framework for assistive environments , 2008, PETRA '08.

[9]  P. Olivier,et al.  Keeping In Touch Everyday (KITE) project: developing assistive technologies with people with dementia and their carers to promote independence , 2009, International Psychogeriatrics.

[10]  Kazuo Tanaka,et al.  Electroencephalogram-based control of an electric wheelchair , 2005, IEEE Transactions on Robotics.

[11]  Guy H. Walker,et al.  Human Factors Design and Evaluation Methods Review , 2004 .

[12]  Alan Harding,et al.  6.1.1 A structured approach to planning and managing systems engineering capability evolution in a complex through‐life business space , 2009 .

[13]  James H. Aylor,et al.  Computer for the 21st Century , 1999, Computer.

[14]  George F. Wilber.  Boeing's SoSE Approach to e‐Enabling Commercial Airlines , 2008 .

[15]  Maysam Ghovanloo,et al.  Evaluation of a wireless wearable tongue–computer interface by individuals with high-level spinal cord injuries , 2010, Journal of neural engineering.

[16]  J.S. Dahmann,et al.  Understanding the Current State of US Defense Systems of Systems and the Implications for Systems Engineering , 2008, 2008 2nd Annual IEEE Systems Conference.

[17]  Michael J. Ryan,et al.  Introduction to Systems Engineering , 2015 .

[18]  Andrew Shepherd,et al.  Hierarchical task analysis , 2001 .

[19]  Philip T. Kortum,et al.  Determining what individual SUS scores mean: adding an adjective rating scale , 2009 .

[20]  Fethi A. Inan,et al.  ASSISTIVE TECHNOLOGIES FOR STUDENTS WITH DISABILITIES: A SURVEY OF ACCESS AND USE IN TURKISH UNIVERSITIES , 2010 .

[21]  Mark W. Maier,et al.  Architecting Principles for Systems‐of‐Systems , 1996 .

[22]  R. W. Peterson,et al.  OPTICAL INTERFEROMETRY OF SURFACES , 1991 .

[23]  R. Orpwood,et al.  Using Smart Technology in an Enabling Way: A Review of Using Technology to Support Daily Life for a Tenant with Moderate Dementia , 2011 .

[24]  Mohammad Jamshidi,et al.  System of systems engineering : innovations for the 21st century , 2008 .

[25]  Ian A. Hiskens,et al.  Operation and Control of Electrical Power Systems , 2008 .

[26]  James T. Miller,et al.  An Empirical Evaluation of the System Usability Scale , 2008, Int. J. Hum. Comput. Interact..

[27]  Helen Petrie,et al.  Initial results from a critical review of research on technology for older and disabled people , 2013, ASSETS.

[28]  Cristian Rusu,et al.  Developing a Touchscreen-based Domotic Tool for Users with Motor Disabilities , 2012, 2012 Ninth International Conference on Information Technology - New Generations.

[29]  Peter Gregor,et al.  Design for older and disabled people – where do we go from here? , 2002, Universal Access in the Information Society.

[30]  Donald Firesmith,et al.  Use Cases: the Pros and Cons , 2014 .

[31]  J. B. Brooke,et al.  SUS: A 'Quick and Dirty' Usability Scale , 1996 .

[32]  Paula Kotzé,et al.  The complementary role of two evaluation methods in the usability and accessibility evaluation of a non-standard system , 2010, SAICSIT '10.

[33]  Barbara Rita Barricelli,et al.  User-Centered Design of E-Learning Tools for Users with Special Needs: The VisualPedia Case Study , 2012, IxD&A.

[34]  Guy H. Walker,et al.  Human Factors Methods: A Practical Guide for Engineering and Design , 2012 .

[35]  Sara Schwartz,et al.  Where the Rubber Hits the Road , 2003 .

[36]  Andres Sousa-Poza,et al.  System of systems engineering: an emerging multidiscipline , 2008, Int. J. Syst. Syst. Eng..

[37]  Octavian Postolache,et al.  UbiSmartWheel: a ubiquitous system with unobtrusive services embedded on a wheelchair , 2009, PETRA '09.