【摘要】 利用肢体支反力波动(VRFB)的信息监测生理状态具有独特的优势。建立心冲击所致的VRFB两自由度振动模型,导出了心冲击与VRFB之间的传递关系。根据文献提供数据对VRFB的量级进行了估计,并与初步实验结果进行了比较。研究表明:VRFB幅度的理论估计与实测相吻合,约为牛顿量级,实测的VRFB曲线上心动周期明显。更多还原

【Abstract】 It is a promising technique to monitor physiological conditions according to the fluctuation of reacting force upon the human body(VRFB).A twodegrees,of freedom vibration model of VRFB caused by cardio ballistic is presented,and the transfer function from cardio ballistic to VRFB is deduced out.The level of VRFB is estimated based on the data from literatures,and is compared with that of a pilot experiment.It is shown that,the estimated level of VRFB conforms to the experiment results,which is around several Newtons.The heartbeat is apparent in the recorded VRFB trajectory.更多还原