放大鏡倍率、鏡面傾斜角度與作業面高度對於女性人員偵檢績效、視覺與肌肉疲勞之效應

The Effect of Magnification Times and Tilting Angles of Magnifying Glasses and The Heights of Work-Surface on Female Inspectors' Performance, Visual and Muscle Fatigue

吳水丕(Swei-Pi Wu) ； 林岳勳(Yueh-Hsun Lin)

《技術學刊》 25卷4期 (2010/12) Pp. 285-292

https://doi.org/10.29507/JT.201012.0005

摘要

本研究旨在探討放大鏡鏡面傾斜角度（0°、30°與60°）、放大鏡倍率（3倍與5倍）及作業面高度（坐肘高、坐肘高上5 cm和10 cm）對於放大鏡偵檢作業員之閃光融合閾值(CFF)、近點調節閾值(NPA)、作業績效、視覺疲勞主觀評量和肌肉骨骼疲勞主觀評量等影響，本研究共募集12位女性參與實驗，每位受試者以隨機化的順序進行18次的實驗組合，每次進行30分鐘的鋰電池模擬偵檢作業。資料經收集分析討論發現：(1)放大鏡鏡面傾斜角度對於偵檢的元件數量、視覺疲勞主觀評量及肌肉疲勞主觀評量有顯著效應，最佳的放大鏡鏡面傾斜角度爲60°，其次爲30°，最差的爲0°。(2)放大鏡倍率對於閃光融合閾值、偵檢的元件數量和視覺疲勞主觀評量有顯著效應，3倍放大鏡顯著優於5倍放大鏡。(3)作業面高度對於視覺疲勞主觀評量和肌肉疲勞主觀評量有顯著效應，最佳爲坐肘高上0公分，其次爲坐肘高上5公分，最差的爲坐肘高上10公分。(4)整體來說，最佳的放大倍率爲三倍放大，放大鏡鏡面傾斜角度爲60°，作業面高度爲坐肘高上0公分。

關鍵字

鋰電池 ； 放大鏡 ； 偵檢作業 ； 視覺疲勞 ； 肌肉骨骼傷害

並列摘要

The purpose of this study was to evaluate the effects of tilting angles (tilt 0°, 30° and 60°), magnification power (3 and 5 times magnification) of magnifying glasses and the heights of work surface (elbow-level, +5 cm, +10 cm) on the critical fusion frequency (CFF), near point of accommodation (NPA), inspection performance, subjective visual strain rating (SVS) and subjective musculoskeletal strain rating (SMS) for visual inspection operators in a Li-ion battery factory. Twelve females were recruited as participants to perform 18 different experimental tasks. The participants were instructed to perform a visual inspection task on a simulated Li-ion battery circuit board over a 30-min period. The results showed that: (1) the tilting angle of magnifying glasses significantly affected CFF, inspection performance, SVS and SMS, and that 30°tilt was the best, 0° tilt was the second best, and 60° tilt was the worst; (2) magnification power had significant effects on CFF, inspection performance and SVS, the 3 times magnification was better than 5 times; (3) work surface height also significantly affected SVS and SMS, 5 cm above elbow-level was the best, 10 cm above elbow-level was next, and elbow-level was the worst; (4) Overall, the optimum combination is 3 times magnification magnifying glasses with 30° tilt angle on a work surface set 10 cm above elbow-level.

並列關鍵字

Li-ion battery ； magnifying glasses ； inspection tasks ； visual fatigue ； musculoskeletal discomfort