基于心率变异性的乘坐舒适性评价  

Ride Comfort Evaluation Based on Heart Rate Variability

作　　者：王宇 李园园 甄亚晶 窦胜月 WANG Yu;LI Yuanyuan;ZHEN Yajing;DOU Shengyue(School of Atomobile,Chang'an University,Shaanxi Xi'an 710064)

机构地区：[1]长安大学汽车学院,陕西西安710064

出　　处：《汽车实用技术》2022年第3期131-134,共4页Automobile Applied Technology

摘　　要：文章在传统乘坐舒适性评价的基础上研究心率变异性(HRV)对乘客在站姿、坐姿状态下乘坐舒适性进行评价的可行性。以某品牌纯电动公交车为研究对象,采集试验车辆选定位置处X、Y、Z三个方向的振动加速度信号,并采集受试乘客站姿、坐姿两种状态下的生理信号,并利用不同数据处理方法进行处理,最后得到站姿、坐姿状态下的对应指标如时域分析下的均方根值、HRV三角指数(HRVti);频域分析中的标准化低频分量与高频分量之比(nLF/nHF);非线性分析中的散点椭圆拟合短半轴与长半轴之比(SD1/SD2)、样本熵(SampEN),结合受试乘客主观评价得到舒适性评价。通过研究可知HRV分析,可以作为传统乘坐舒适性的评价补充。The feasibility of heart rate variability(HRV) is studied to evaluate ride comfort in the standing and sitting states of passengers on the basis of the traditional evaluation of ride comfort. Vibration acceleration signals in the X, Y, and Z directions at the selected position of the tested vehicle and physiological signals of standing posture and sitting posture were collected. Signals were processed by different data processing methods. The corresponding indexes was obtained by combining the subjective evaluation of tested passengers. The study showed that HRV analysis can be used as a supplement for the evaluation of traditional ride comfort.

关 键 词：纯电动公交车 乘坐舒适性 心率变异性 

分 类 号：U469.72[机械工程—车辆工程]