为研究压力垫在静态平衡和步态检测两个方面替代测力台的可行性，深入比较了利用压力垫和测力台计算得到的压力中心( COP )的异同。利用了平衡功能综合测力台，其包括测量分布力的压力垫系统和集总力测力台系统；这两个系统同步采样，确保测量结果得以相互比较。18名被试者以双脚直立、倾斜、左右摇晃和单脚站立等站立姿态完成测试。并且通过被试者的步态数据利用线性回归的方法，建立行走中的压力中心坐标与压力敏感单元的模型。通过t-检验和相关系数来分析比较两个测量系统得到的结果；并且验证所建立的线性回归模型的准确性。经实验验证，两个系统计算得到的COP具有较高的一致性；分析比对结果表明按足底解剖结构放置8个压敏单元能够较为准确反映压力中心的动摇轨迹。%To investigate the possibility of substituting force platform with pressure insole system in the analysis of COP and establishing a wearable static equilibrium or stepping intention analysis system,this study makes a thor-ough comparison between COP parameters obtained with the pressure insole system and the force platform respec-tively. The experiment set is a dedicatedly developed integrated measurement system which includes two measure-ment channels:pressure insole channel and force platform channel. The data of two channels are synchronously sam-pled that ensures the comparability of the two channels. Eighteen subjects are recruited for the data collection and the inspecting postures include bipedal upright stance,leaning,medio-lateral swing and standing on one leg. The re-sults of both channels were compared via student test and correlation analysis. It is demonstrated that the results ob-tained with pressure insole system agree well with the result got with the force platform and COP could be estimated accurately via the eight pressure cells placed under the foot.
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