潘　奇　万　舟　李　琨　李懿洋

(昆明理工大学信息工程与自动化学院　昆明　650000)



基于PVDF的足部压力信息采集研究*

潘奇万舟李琨李懿洋

(昆明理工大学信息工程与自动化学院昆明650000)

摘要如何在减小运动损伤的同时提高训练成绩和技术水平,已日益成为排球运动专项训练设计的关注焦点。基于此,论文拟提出一种基于PVDF传感器的排球运动员足部压力信息采集系统。论文设计了基于足部解剖学的PVDF压电传感器阵列以及信号调理电路,使用USB7360AF多功能数据采集卡实时处理数据。实际测试结果表明,该系统稳定灵敏实用,能够为排球教学及训练的科研提供技术支持。

关键词排球运动; 足部压力; PVDF; 压电传感器

Foot Pressure Information Collection Based on PVDF

PAN QiWAN ZhouLI KunLI Yiyang

(School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming650000)

AbstractHow to reduce sports injuries and improve training results and technical level in the same time has increasingly become the focus of special training designed for volleyball. Based on this, an attempt is made to propose a foot pressure information collection system of volleyball players based on PVDF sensor. A PVDF piezoelectric sensor array which is based on the foot anatomy and signal conditioning circuit is designed in this paper, and USB7360AF data acquisition card is used to process data in real time. The practical test results show that the system is stable and sensitive, and can provide technical support for the research of volleyball teaching and training.

Key Wordsvolleyball, foot pressure, PVDF, piezoelectric sensor

Class NumberTP216.1

1引言

排球运动起源于1895年的美国,发展至今,已成为世界上最受欢迎的运动之一[1]。随着现代排球运动竞技水平的持续提高,各种运动性损伤也逐渐增多,其中足部损伤最为严重。据国内外统计研究表明,排球运动员的足部损伤主要由于其足部长期受到较大压力冲击而引起的慢性疲劳性损伤或者应力性疲劳性损伤[2]。这些损伤会妨碍运动员技术水平的提高及发挥,甚至会缩短其运动寿命。因此,有必要对排球运动员的足部进行全方位的压力信息采集,从而定量揭示排球运动员跑、跳、蹬等环节的足部生物力学特征和动力学规律[3],为专项训练的制定提供科学依据,从而最大限度地减小运动损伤,更有效地提高运动员的技术水平。

当前专门针对排球运动员整个足部压力信息采集的研究还很少[4],基于此,本文阐述了一种基于PVDF压电传感器的足部压力分布信息采集的系统设计方案。……