کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5123708 | 1487418 | 2017 | 6 صفحه PDF | دانلود رایگان |
- Defining a sampling strategy is as least as important as the assessment method.
- Sampling interval has a significant effect on the reliability of sampling.
- Smaller sampling intervals lead to better reliability of sampling.
In industry, the Ovako working posture analysing system (OWAS) is applied using different sampling intervals. However, it has not yet been established what influence the sampling interval has on the reliability of the data collection. For this purpose, the sampling interval of an existing ergonomic analysis of working postures using OWAS with 20,601 observations was varied between 2 and 90Â s to investigate the effects of deviation from the original sampling interval of 1Â s. Based on these comprehensive industrial data, which was statistically analyzed with regression analyses, it can be concluded that in the ergonomic analysis of working postures using OWAS, direct observations should have a sampling interval of 20Â s, and video-based observations should have a sampling interval of 10Â s or less.Relevance to industryThe Ovako working posture analysing system (OWAS) is a practical and frequently selected method for the ergonomic analysis and evaluation of working postures. However, the selection of a suitable method is as least as important as the definition of a sampling strategy providing reliable values obtained through observation. For this reason we investigated the effect of the sampling interval and recommend using 20Â s for direct observations and 10Â s or less for video-based observations.
Journal: International Journal of Industrial Ergonomics - Volume 57, January 2017, Pages 68-73