An Ergonomic Assessment for Numeric Keypad
| Autor: | Jian-Shiang Huang, 黃健翔 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 This research is mainly to carry on the discussion to 3 kinds of common different kinds of numeric keypads on the market. These three kinds of numeric keypads are the machinery type numeric keypad (A type), the silica gel type numeric keypad (B type) With the flat numeric keypad (C type), Research approach use EMG and electrogoniometer whose examine it probe into different kinds of numeric keypad their muscle activity degree and wrist difference of wrist joint of angle to come mainly. The experiment is divided into two stages mainly. First stage is to compare different material of numeric keypads if them have Musculoskeletal disorders risk in operation to lay on the same height of three numeric keypad. Second stage is focus on different to the material but have no difference to operation numeric keypad to compare highly with have Musculoskeletal disorders risk in operation, through data collection and after analysing, its conclusion is as follows: 1.Learn in the comparison of the material, though the silica gel material of the B type numeric keypad is soft and comfortable and quiet on the sense of touch that is operated, but the response of the numeric keypad is not like the sensitivity in imagination, sometimes the same beat twice or need exert oneself beat and having a exertion situation, though materials are different between A type with C type, but there is no apparent difference in application of force. 2.From the correlation coefficient of A type numeric keypad and C type numeric keypad, the correlation coefficient of the two between the wrist angle with flexor digitorum superficialis shows significant for 0.896 and P-value |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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