Sh. Chitsaz, H. Sadeghi Naeini, A. Nedayifard , H. Malekipour, A. Vahdad,
Volume 7, Issue 3 (9-2017)
Abstract
In this paper, the main objective is ergonomics evaluation of
automobile’s dashboard to devise suitable designs based on textures and
patterns. Undoubtedly appropriated dashboards' design based on textures
might be ended to more driving safety, in which the tactile-real and visualimplied
texture of a surface should be considered. In this study, data was
gathered by in-depth observation and questionnaires. Expert volunteers
who not only used their cars frequently, but also were fairly sensitive to the
effects of visual and tactile items in dashboard design automobile’s
manufacturers. Statistical data analyzing shows improving texture in
dashboard design has a significant influence on drivers'. The need to take
repeated glimpses in order to distinguish the operation of each button will
diminish, an issue significantly decreasing accident risk. The results show
the interaction between the product textures will be ended to users'
satisfaction and also product’s feature and performance. This study clarifies
the significance of dashboard texture, so industrial designers are expected
to work harder to make better use of textures in designing product elements.
Ashkan Moosavian, Alireza Hosseini, Seyed Mohammad Jafari, Iman Chitsaz, Shahriar Baradaran Shokouhi,
Volume 12, Issue 2 (6-2022)
Abstract
In this paper, to address the problem of using displacement sensors in measuring the transverse vibration of engine accessory belt, a novel non-contact method based on machine vision and Mask-RCNN model is proposed. Mask-RCNN model was trained using the videos captured by a high speed camera. The results showed that RCNN model had an accuracy of 93% in detection of the accessory belt during the test. Afterward, the belt curve was obtained by a polynomial regression to obtain its performance parameters. The results showed that normal vibration of the center of the belt was in the range of 2 to 3 mm, but the maximum vibration was 8.7 mm and happened in the engine speed of 4200 rpm. Also, vibration frequency of the belt was obtained 124 Hz. Moreover, the minimum belt oscillation occurred at the beginning point of the belt on the TVD pulley, whereas the maximum oscillation occurred at a point close to the center of the belt at a distance of 16 mm from it. The results show that the proposed method can effectively be used for determination of the transvers vibration of the engine accessory belts, because despite the precise measurement of the belt vibration at any point, can provide the instantaneous position curve of all belt points and the equation of the belt curve at any moment. Useful information such as the belt point having the maximum vibration, belt slope, vibration frequency and scatter band of the belt vibration can be obtained as well.