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Sensors 2015, 15(6), 13568-13590; doi:10.3390/s150613568

Discomfort Evaluation of Truck Ingress/Egress Motions Based on Biomechanical Analysis

Intelligent HMI/CAD Lab, Graduate School of Automotive Engineering, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 136-702, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Xue Wang
Received: 28 March 2015 / Revised: 20 May 2015 / Accepted: 5 June 2015 / Published: 10 June 2015
(This article belongs to the Section Physical Sensors)
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Abstract

This paper presents a quantitative discomfort evaluation method based on biomechanical analysis results for human body movement, as well as its application to an assessment of the discomfort for truck ingress and egress. In this study, the motions of a human subject entering and exiting truck cabins with different types, numbers, and heights of footsteps were first measured using an optical motion capture system and load sensors. Next, the maximum voluntary contraction (MVC) ratios of the muscles were calculated through a biomechanical analysis of the musculoskeletal human model for the captured motion. Finally, the objective discomfort was evaluated using the proposed discomfort model based on the MVC ratios. To validate this new discomfort assessment method, human subject experiments were performed to investigate the subjective discomfort levels through a questionnaire for comparison with the objective discomfort levels. The validation results showed that the correlation between the objective and subjective discomforts was significant and could be described by a linear regression model. View Full-Text
Keywords: discomfort evaluation; ingress/egress; ergonomic design; truck footstep; biomechanics discomfort evaluation; ingress/egress; ergonomic design; truck footstep; biomechanics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, N.-C.; Lee, S.H. Discomfort Evaluation of Truck Ingress/Egress Motions Based on Biomechanical Analysis. Sensors 2015, 15, 13568-13590.

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