基于压力分布的办公坐姿疲劳状态识别的研究与应用

Research and Application of Fatigue State Recognition of Office Sitting Posture Based on Pressure Distribution

中文关键词: 疲劳监测  体压分布  产品设计  办公久坐

英文关键词: fatigue monitoring  body pressure distribution  product design  office sedentariness

中文摘要:

      目的 对使用电脑办公的久坐工作者腰背部疲劳状态的监测方法进行研究，并对久坐疲劳监测提出疲劳监测分类模型和产品设计应用。方法 基于“以人为本”的设计理念，运用实验法展开人机实验，实验中采集使用电脑办公的久坐工作者的座面臀部体压信号和主观疲劳的Borg值，进而对所采集的主、客观数据进行深入分析，并对工作者的疲劳进行评估。结果 在使用电脑办公的工作者中，坐压压力数据的总和(RS)与主观疲劳度呈现负相关，坐压压力中心运动速度(TPV)、直线运动距离(SLD)与主观疲劳度呈现正相关，以上压力中心运动轨迹特征值(RS、TPV、SLD)均与主观疲劳的Borg值现出显著的相关性(P<0.01)。结论 验证了主观疲劳感知与压力中心运动轨迹特征值之间存在显著的相关性，特别是臀部压力数据的总和与压力中心运动速度。本文提出了一种基于臀部体压特征的可识别久坐疲劳状态的模型，进而提出将主观评价标准和体压特征融入久坐疲劳监测的设计应用。

英文摘要:

      The work aims to study the monitoring method of the low back fatigue state of sedentary workers who work with computers, and put forward the fatigue monitoring classification model and product design application. Based on the design concept of "people-orientation", an man-machine experiment was carried out with the experimental method. In the experiment, the pressure signal of the seat surface and buttocks and the Borg value of subjective fatigue of sedentary workers who used computers were collected, and then the collected subjective and objective data were deeply analyzed, and the fatigue of workers was evaluated. Experimental results showed thatthe sum of sitting-pressure data (RS) was negatively correlated with subjective fatigue, while the sitting-pressure center movement velocity (TPV) and linear travel distance (SLD) were positively correlated with subjective fatigue. The above pressure center motion locus eigenvalues (RS, TPV, SLD) showed significant correlation with Borg value of subjective fatigue (P<0.01). In summary, it is verified that there is a significant correlation between the subjective fatigue perception and the characteristic values of the pressure center motion trajectory, especially the sum of hip pressure data and the pressure center motion speed. In this paper, a model for identifying sedentary fatigue based on hip body pressure characteristics is proposed, and the subjective evaluation criteria and body pressure characteristics are proposed to beintegrated into the design and application of sedentary fatigue monitoring.