A Kansei Information Evaluating the Riding Comfort of Stroller and A New Type Stroller

心率变异性（heatratevariability，HRV）是一项评价婴儿和父母使用婴儿车和轮椅时乘坐舒适性的生理指标。受试者为6名男性，年龄从22岁到24岁。在这三种路面上分别测量受试者和轮椅的心率变异性、振动和乘坐舒适性。评价乘坐舒适性的项目包括身体各部位（头部、胸部、腹部、大腿和小腿）的振动感觉、稳定性感觉、紧张感、稳定性感觉、疲劳感和综合乘坐舒适性。结果，确认了如果轮椅在联锁道路上移动而不是在普通铺砌道路上移动，则振动将增加LF/HF，具有显著差异。LF/HF与乘坐舒适性的关系还表明，胸部振动感、疲劳感和稳定感会影响LF/HF。此外，在3.2Hz下，从轮椅到受试者胸部周围的传递率与LF/HF之间的相关性显示存在显著相关性。结果表明，在3 ~ 4 Hz范围内，受试者坐在轮椅上的身体振动所引起的LF/HF的增加，对乘坐舒适性有影响，提示LF/HF可以作为定量描述乘坐舒适性的生理指标。最后，根据通过上述实验和对现有婴儿车和轮椅的调查所获得的知识，提出了一种婴儿车。

Heat Rate Variability (HRV) which is a physiological index has been investigated to evaluate the riding comfort of baby and parents who use strollers and wheelchairs, The HRV of the subjects who rode a wheelchair was measured through their electrocardiograms as well as the riding comfort. The subjects were six men whose ages were from 22 to 24 years old. The subjects and the wheelchair were traveled on the three kind roads to measure the HRV, the vibration of the subjects and the riding comfort. The items for evaluating the riding comfort consisted of the feeling of the vibration of each body part (head, chest, abdomen, upper-legs and lower-legs), the feeling, of stability, the feeling of getting tense, the feeling of stability, the feeling of tiredness and the synthetic riding comfort. As a result, it was confirmed that the vibration would increase the LF/HF if the wheelchair was moved on the interlocking road rather than on the general paved road with a significant difference. The relationships between the LF/HF and the riding comfort also suggested that the feeling of vibration at chest, the feelings of tiredness and stability would affect the LF/HF. Furthermore, at 3.2Hz, the correlation between the transmissibility from the wheelchair to around the subjects' chest and the LF/HF showed that there was a significant correlation. The result has showed that the riding comfort could be affected with the increment of the LF/HF which would be caused by the vibration of the subjects' body seating in the wheelchair from around 3 to 4Hz, and it has suggested that the LF/HF could be a physiological index which quantitatively describes the riding comfort. Finally, a stroller has been proposed according to the knowledge obtained through the above-mentioned experiments and the investigations into the existing strollers and wheelchairs.