针对使用象限三电能收获器仪器仪表式膝关节植入物的自动供电负载失衡检测
Mahmood Chahari1, Hosein Haghshenas2, Emre Salman2
1State University of New York at Binghamton, Binghamton, NY, USA.
概括
这项研究引入了一种自动供电的 triboelectric nanogenerator (TENG) 压力传感器,用于检测膝盖植入物中的骨负载失衡. 早期检测负载转移可以防止植入物松动,这是故障的常见原因.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 膝盖植入物松动是植入物失败的主要原因之一.
- 精确监测骨托盘的负载分布对于植入物寿命至关重要.
- 现有的监控方法可能缺乏自动供电能力或实时反.
研究的目的:
- 开发和评估一个 triboelectric纳米发电机 (TENG) 作为一个自动供电的压力传感器,用于测量骨托盘上的负载失衡.
- 调查TENGs在早期检测膝盖植入物松动方面的潜力.
- 评估TENG系统的电力采集能力.
主要方法:
- 提出了一个细分象限设计的TENG压力传感器,具有各种微型图案 (金字塔,圆柱形,条形).
- 进行实验测试,以评估在轴力下传感能力和电力收获.
- 确定象限输出和轴力之间的关系以表征传感器性能并找到压力中心.
主要成果:
- TENG压力传感器在不同象限中表现出不同的灵敏度,使轴向力测量成为可能.
- 建立了每个象限的输出和应用的轴向力之间的明确关系.
- 该系统成功地描述了自动供电的传感器性能,并使压力中心的确定成为可能.
- 在2200N的行走负荷下,每个象限在1Hz和2Hz时产生可测量的表面功率.
结论:
- 开发的基于TENG的压力传感器是一种可行的自动供电解决方案,用于监测骨托盘上的负载不平衡.
- 检测压力中心的变化可以作为膝盖植入物松动的早期指标.
- 在仪器植入物中,TENG系统具有传感和能量收集的潜力.
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