Assessment of task ergonomics with an upper limb wearable device
Assessment of task ergonomics with an upper limb wearable device
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使用上肢可穿戴设备评估任务人体工程学
DOI：
10.1109/med.2014.6961394
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
E. Ruffaldi
中科院分区：
文献类型：
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作者：
Lorenzo Peppoloni;Alessandro Filippeschi;E. Ruffaldi
在发达国家，与上肢工作相关的肌肉骨骼疾病(ULWMSD)每年都在不断增加。据估计，在意大利，2007年ULWMSD占所有与工作有关的病理疾病的41.6%。在这种背景下，正确诊断和治疗这种病理的重要性越来越大。传统上，评估是使用纸笔观察技术来完成的，在这种技术中，运动被手动分类、标记，并将结果与发给被监测对象的主观问卷相结合。这些传统方法的主要问题是缺乏对运动和所施加的力量的客观评估，这些评估是通过受试者询问和手动从录像带中提取的身体姿势来推断的。在此背景下，我们提出了一种新的有线系统，用于评估人类上肢的肌肉力量和姿势，以用于生态环境中的ULWMSD诊断。该系统由惯性单元和肌电传感器组成，惯性单元用于重建上肢姿势，肌电传感器用于评估肌肉力量。上肢被认为是一个运动链，由肩部三个自由度、肘部两个自由度和手腕两个自由度组成，前臂屈肌通过肌电进行监测。我们建议对该系统进行初步验证，测试它以评估结账操作员在日常现实操作中的姿势和肌肉力量。
Upper Limb Work-related Musculo Skeletal Disorders (ULWMSD) are constantly increasing every year in developed countries. It is estimated that in Italy, in 2007 ULWMSD were the 41,6% of all the work-related pathologies. In this context, the importance to correctly diagnose and treat this kind of pathology is growing. Traditionally the assessment is done using pen-and-paper observational techniques in which movements are manually classified, labelled and compared integrating the results with subjective questionnaires given to the monitored subjects. The main problem with those traditional methods is the lack of objective assessment regarding the motion and the forces exerted, which are inferred by subjects inquiry and the body posture, manually extracted from video tapes. In this context we propose a novel wired system for assessing the muscular effort and posture of the human upper limb for ULWMSDs diagnosis in ecologic environment. The system is composed of inertial units to reconstruct the upper limb posture and EMG sensors to assess the muscle effort. The upper limb is considered as a kinematic chain comprising three degrees of freedom (DoFs) for the shoulder, two DoFs for the elbow and two DoFs for the wrist, while forearm flexor muscles are monitored through EMG. We propose a preliminary validation of the system testing it for assessing posture and muscle effort of a check-out operator during everyday real-life operations.