模擬手部功能受損對使用指標輸入整合裝置及滑鼠操作績效之影響

Effect of Simulated Deficit Hand-arm Function on Operational Efficiency Using Integrated Pointing Device Apparatus with Common Pointing Devices

陳協慶(H. C. Chen) ； 盧長慶(C. C. Lu) ； 吳欣潔(H. C. Wu) ； 陳嘉玲(C. L. Chen)

《人因工程學刊》 9卷1期 (2007/03) Pp. 47-54

https://doi.org/10.6273/JES.2007.9(1).06

摘要

手部功能受損之肢礙者往往需要利用特殊的指標輸入裝置方能操作電腦。儘管市面上已有許多特殊裝置被研發來協助這些人，但如何針對個別的需求來選擇最佳之指標諭入裝置，至今仍未被提及。前期的研究會開發一款電腦指標輸入整合裝置(IPDA)，用來協助手部功能受損者以身體其他部位操作一般的市售指標裝置，例如滑鼠及軌跡球等。因此，本研究透過系統性之測試，探討使用IPDA搭配市售指標裝置時，手部功能限制對指標裝置操作績效之影響。研究測試30名研究生分別在手部未受限制，以及手指、腕、肘部活動受到護木的限制下，執行「移動點選」及「拖曳施放」作業之績效；在不同的測試條件下透過IPDA的整合功能，受測者分別以單手控制滑鼠或軌跡球、以單手腕控制轉向滑鼠、以兩前臂分別控制軌跡球與滑鼠按鍵、及以下巴及前臂合力控制軌跡球與滑鼠，來達成控制游標移動及按鍵的功能。測量所得之績效以未受限制下操作一般滑鼠之平均績效(100%AP)進行標準化，結果顯示操作軌跡球及轉向滑鼠之「移動點選」及「拖曳施放」績效，分別爲70%AP與65%AP；而以兩前臂分別控制軌跡球與滑鼠按鍵之「移動點選」及「拖曳施放」績效，分別爲53%AP與45%AP。儘管以下巴及前臂合力控制軌跡球與滑鼠按鍵在兩項測試中所得之績效僅約45%AP，該操作績效仍高於主觀可接受之操作績效(25%AP)。

關鍵字

指標裝置 ； 操作績效 ； 肢體障礙 ； 手部功能

並列摘要

Persons with impaired hand function usually rely on using specially designed pointing devices to operate computers. Despite various devices have been developed to facilitate such persons, the optimal way of selecting a pointing device according to individual need has not been addressed to date. An integrated pointing device apparatus (IPDA) was developed to facilitate the computer operation of people with impaired hand function in controlling ordinary pointing devices, such as mouse and trackball, by their different body parts. A series of systematic tests were conducted in this study to explore the effects of hand-arm functional limitation on the operational efficiency (OE) of ordinary pointing devices. Target acquisition and drag-and-drop OE of 30 engineering graduates were tested without or with their finger, wrist, and elbow movement restricted by a splint Accordingly, subjects controlled cursor movement and clicking by one hand and a mouse/trackball, by one wrist and an orientation-rotated mouse, by forearms together with a trackball and a mouse, by chin and forearm together with a trackball and a mouse, via IPDA integration function. Measured OEs were normalized according to the average efficiency of nonrestrictive tests, i.e. 100% OE of able person (%AP). Results showed OE of target acquisition and drag-and-drop were about 70%AP and 65%AP, respectively, using trackball and orientation-rotated mouse. While integrating forearms to operate a trackball and a mouse, the OE of target acquisition and drag-and-drop were 53%AP and 45%AP, respectively. In spite of integrating chin and forearm to operate a trackball and a mouse achieved OE around 45%AP both in target acquisition and drag-and-drop tasks, this operational performance is still higher than the subjectively acceptable OE of 25%AP.

並列關鍵字

Pointing device ； Operational efficiency ； Disability ； Hand function