同时测量鞋地间三维相互作用力的传感器系统

Novel Sensor System for Measuring Tri-axial Pressure on Foot-Ground Interface

为获取田径运动员脚底与跑道接触的蹬地力和支撑力等技术参数,研制了一种新型传感器系统.该系统包括能同时获取鞋地间三维相互作用力的传感器、输出信号调理电路、数据采集单元、存储和显示模块.传感器采用新型压电材料,通过新颖结构设计而实现.根据二元非线性冲击系统模型,研制了模拟鞋地间相互作用的冲击测验平台,并在实验室环境下进行了测试.测试结果与基于二元非线性冲击系统模型的理论计算结果表现出良好的一致性.

This paper presents a new sensor system for measuring the pedaling strength of human foot and the sustenance between the athlete＇s tread and the ground. The system consists of a tri-axial pressure sensor, circuits for data acquisition and signal filtering, and data storage and display modules. The sensor is designed and fabricated with a novel mechanical structure using a new piezoelectric material. Based on the nonlinear model of the dual systems of impact machine, a test-bed to simulate the impact on the foot-ground interface is developed to validate the system. The experimental results well agree with the theoretical curve obtained with the nonlinear model dual systems of impact.