AS  Vol.11 No.11 , November 2020
The Influence of a User-Centred Design Focus on the Effectiveness of a User Interface for an Agricultural Machine
Abstract: As agricultural machines become more complex, it is increasingly critical that special attention be directed to the design of the user interface to ensure that the operator will have an adequate understanding of the status of the machine at all times. A user-centred design focus was employed to develop two conceptual designs (UCD1 & UCD2) for a user interface for an agricultural air seeder. The two concepts were compared against an existing user interface (baseline condition) using the metrics of situation awareness (Situation Awareness Global Assessment Technique), mental workload (Integrated Workload Scale), reaction time, and subjective feedback. There were no statistically significant differences among the three user interfaces based on the metric of situation awareness; however, UCD2 was deemed to be significantly better than either UCD1 or the baseline interface on the basis of mental workload, reaction time and subjective feedback. The research has demonstrated that a user-centred design focus will generate a better user interface for an agricultural machine.
Cite this paper: Rakhra, A. , Green, M. and Mann, D. (2020) The Influence of a User-Centred Design Focus on the Effectiveness of a User Interface for an Agricultural Machine. Agricultural Sciences, 11, 947-965. doi: 10.4236/as.2020.1111062.

[1]   Liu, Y. (1997) Software-User Interface Design. In: Salvendy, G., Ed., Handbook of Human Factors and Ergonomics, 2nd Edition, John Wiley & Sons, New York, 1689-1724.

[2]   Norman, D.A. (1983) Design Rules Based on Analyses of Human Error. Communications of the Association for Computing Machinery, 26, 254-258.

[3]   Sanchez, J. and Duncan, J.R. (2009) Operator-Automation Interaction in Agricultural Vehicles. Ergonomics in Design: The Quarterly of Human Factors Applications, 17, 14-19.

[4]   Vicente, K.J., Rasmussen, J. and Member, S. (1992) Ecological Interface Design: Theoretical Foundations. IEEE Transactions on Systems, Man, and Cybernetics, 22, 589-606.

[5]   Endsley, M.R., Bolte, B. and Jones, D.G. (2003) Designing for Situation Awareness: An Approach to User-Centered Design. CRC Press, Boca Raton.

[6]   Rakhra, A.K. and Mann, D.D. (2018) Design and Evaluation of Individual Elements of the Interface for an Agricultural Machine. Journal of Agricultural Safety and Health, 24, 27-42.

[7]   Jeffries, R., Miller, J.R., Wharton, C. and Uyeda, K. (1991) User Interface Evaluation in the Real World: A Comparison of Four Techniques. Proceedings of the SIGCHI Conference on Human Factors in Computing System, New Orleans, April 1991, 119-124.

[8]   Nielsen, J. (1994) Usability Inspection Methods. Conference Companion on Human Factors in Computing Systems, Boston, April 1994, 413-414.

[9]   Endsley, M.R. (2015) Situation Awareness: Operationally Necessary and Scientifically Grounded. Cognition, Technology & Work, 17, 163-167.

[10]   Endsley, M.R. (1988) Design and Evaluation for Situation Awareness Enhancement. Proceedings of the Human Factors Society Annual Meeting, 32, 97-101.

[11]   Endsley, M.R. (1996) Automation and situation awareness. In: Parasuraman, R. and Mouloua, M., Eds., Automation and Human Performance: Theory and Applications, Lawrence Erlbaum, Mahwah, 163-181.

[12]   Byrne, E.A. and Parasuraman, R. (1996) Psychophysiology and Adaptive Automation. Biological Psychology, 42, 249-268.

[13]   Taylor, H., Lee, B., Jhingory, J., Drayer, G.E. and Howard, A.M. (2010) Development and Evaluation of User Interfaces for Situation Observability in Life Support Systems. American Institute of Aeronautics and Astronautics, Reston, 1-8.

[14]   Megaw, T. (2005) The Definition and Measurement of Mental Workload. In: Wilson, J.R. and Corlett, N., Eds., Evaluation of Human Work, 3rd Edition, Taylor & Francis Group, Abingdon-on-Thames, 525-551.

[15]   Di Stasi, L.L., Adoracion, A. and Canas J.J. (2013) Evaluating Mental Workload while Interacting with Computer-Generated Artificial Environments. Entertainment Computing, 4, 63-69.

[16]   Pickup, L., Wilson, J.R., Norris, B.J., Mitchell, L. and Morrisroe, G. (2005) The Integrated Workload Scale (IWS): A New Self-Report Tool to Assess Railway Signaller Workload. Applied Ergonomics, 36, 681-693.

[17]   Muckler, F. and Seven, S.A. (1992) Selecting Performance Measures: “Objective” versus “Subjective” Measurement. Human Factors, 34, 441-455.

[18]   Durso, F.T., Hackworth, C.A., Truitt, T.R., Crutchfield, J., Nikolic, D. and Manning, C.A. (1998) Situation Awareness As a Predictor of Performance in En Route Air Traffic Controllers. Air Traffic Control Quarterly, 6, 1-20.

[19]   Endsley, M. and Jones, D. (2016) Designing for Situation Awareness: An Approach to User-Centered Design. 2nd Edition, CRC Press, Boca Raton.

[20]   Hart, S.G. and Staveland, L.E. (1988) Development of NASA-TLX: Results of Empirical and Theoretical Research. Advances in Psychology, 52, 139-183.

[21]   Koch, S.H., Weir, C., Westenskow, D., Gondan, M., Agutter, J., Haar, M., Staggers, N., et al. (2013) Evaluation of the Effect of Information Integration in Displays for ICU Nurses on Situation Awareness and Task Completion Time: A Prospective Randomized Controlled Study. International Journal of Medical Informatics, 82, 665-675.

[22]   Squire, P.N. and Parasuraman, R. (2010) Effects of Automation and Task Load on Task Switching during Human Supervision of Multiple Semi-Autonomous Robots in a Dynamic Environment. Ergonomics, 53, 951-961.

[23]   Rakhra, A.K. and Mann, D.D. (2014) Design Guidelines Review and Conceptual Design of an User-Centered Information Display for Mobile Agricultural Machines. American Society of Agricultural and Biological Engineers Annual International Meeting, Montreal, 13-16 July 2014, 2917-2932.