基于传感阵列的动态足底压力分布测量系统
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TH702 TP274

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国家自然科学基金联合基金重点项目(U1713210)、国家自然科学基金资助项目(92148205)资助


A dynamic plantar pressure distribution measurement system based on sensor array
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    摘要:

    足底压力分布与人体健康具有很大关联性,足底压力分布异常变化是某些足病的早期症状。 为帮助患者预防足病,实 时监测足底压力分布,研制了一种基于触觉传感阵列的动态足底压力分布测量系统。 系统共有 48 个传感单元,测量误差小于 2. 4% ,可对足底各区域压力进行精确采集,并采用可穿戴式设计,将数据采集系统固定于脚踝,通过蓝牙与上位机连接。 此外, 针对传统压力分析方法无法对运动过程中压力分布变化进行分析的缺陷,提出了一种动态足底压力分布分析方法,通过支持向 量机对人体足底压力数据进行分类,达到了 98. 6% 的分类正确率;并在此基础上引入步态相典型压力分布指标,与传统分析指 标相结合,实现对人体健康状态的分析与评价。 实验证明,该系统可以准确测量运动状态下的足底压力分布、分析异常状态下 的压力分布变化并对压力异常区域进行预警。

    Abstract:

    Plantar pressure distribution is closely related to human health, and abnormal changes in plantar pressure distribution are early symptoms of some foot diseases. To help patients prevent foot diseases and monitor the distribution of plantar pressure in real-time, a dynamic plantar pressure distribution measurement system based on a tactile sensing array is developed. The system has a total of 48 sensing units, and the measurement error is less than 2. 4% , which can accurately collect the pressure of each area of the sole of the foot. The system adopts a wearable design, the data acquisition system is fixed on the ankle, then connected to the host computer through Bluetooth. In addition, the traditional pressure analysis method cannot analyze the pressure distribution change during exercise. To address this issue, a dynamic plantar pressure distribution analysis method is proposed. The plantar pressure data of the human body are classified by the support vector machine, and the classification accuracy rate is 98. 6% . On this basis, the typical pressure distribution index of the gait phase is introduced, which is combined with the traditional analysis index to realize the analysis of human health status and evaluation. Experiments have shown that the system can accurately measure the plantar pressure distribution under exercise conditions, analyze pressure distribution changes under abnormal conditions, and give early warning to abnormal areas.

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孙东杰,宋爱国.基于传感阵列的动态足底压力分布测量系统[J].仪器仪表学报,2022,43(6):83-91

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  • 在线发布日期: 2023-02-06
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