Development of a support system for designing production systems aming employment of aging workers and safety

为了支持老龄工人生产系统的设计，我们开发了以下方法和设备：(1)虚拟现实对装配培训系统的效果验证我们开发了一种虚拟现实设备，用于设计老年工人的工作流程，使他们能够轻松地工作，并进行工作培训。通过实验验证了该装置的有效性。实验结果表明，该设备在减少工作训练时间方面是有效的。(2)为保障人员的安全和健康，开发了一种图像处理方法。为了区分和表示人的姿势和位置，引入了六个因素。对各种运动的这六个因素进行主成分分析，并将分析结果作为识别运动的判别标准。一些日常生活活动有别于chang…利用人体连杆模型确定装配作业姿势的方法。该模型的上半身有七个关节，两条腿有两个关节。作为约束，我们将指定它的手指在运动的起始点和结束点的位置、它的物理特性以及由Rula确定的关节弯曲角度范围。此外，我们将通过将折弯角度乘以系数而获得的值的总和设置为目标函数。利用牛顿法求取目标函数最小值的解，揭示运动开始点和结束点的运动姿态。(4)提出了一种适合老龄工人使用的工作特性评价方法，研制了一种能够测量移动物体上的搬运能力的装置，并利用该装置测量了工人的搬运能力。对测量数据进行了分析，明确了工作处理能力与工作规格的对应关系。通过使用这些工作处理能力与工作规格的关系，有可能支持老年人的实际使用。较少

The following method and equipment have been developed for the purpose of supporting the design of production system for aging workers.(1)Verification of the effect of the assembly training system using virtual realityWe have developed a virtual reality equipment for designing work process of aging workers so that they can work easily, and do work training. The validity of this equipment was verified by experiment. Results of the experiment showed that this equipment is effective in reduction of work training time.(2)Development of an image processing method for ensure person's safety and health care.An image of the person is detected by the optical flow procedure. Six factors are introduced in order to distinguish and represent postures and positions of the person. These six factors of various motions are analyzed by the principal component analysis and the results are used as discriminate standards to recognize motions. Some activities of daily living are distinguished from the chang … More e of time series of principal component values.(3)Development of a method for determining a posture for assembly work by using a human body link modelThis model has seven joints in its upper half of the body and two joints in its two legs. As constraints, we will designate the positions of its fingers at the starting and ending points of a motion, its physical characteristics and a range of bending angles of joints established by RULA. Further, we will set the sum total of the values obtained by multiplying the bend angles by a coefficient as an objective function. We will obtain a solution that minimizes the objective function by Newton method to reveal the posture at the starting and ending points of a motion.(4)Development an evaluation method of work characteristics for utilization of aging worker.In this research, the equipment, which can measure the handling capability over a move object, was developed.With this equipment, workers' handling capability was measured. Measurement data was analyzed and correspondence relation between handling capability for work and job specifications was clarified. By using the relation of these handling capability for work and job specifications, it became possible to support practical use of aging people. Less