Design of a Digital Triaxial Force Sensor for Plantar Load Measurements
Design of a Digital Triaxial Force Sensor for Plantar Load Measurements
复制标题
用于足底载荷测量的数字三轴力传感器的设计
DOI：
10.1109/sensors43011.2019.8956606
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Wang L
中科院分区：
文献类型：
--
作者：
Wang L
测量足部足底（下）表面上的负荷信息可以提供有价值的见解，以帮助识别糖尿病足部溃疡等病理。研究表明，足底压力和剪切应力在足部疾病，特别是溃疡形成中起重要作用。然而，在这种情况下，与压力分布相比，剪切应力的研究要少得多，这主要是由于缺乏可靠的测量技术。在本文中，我们提出了一个三轴力传感器测量足底负荷。该传感器由传感线圈阵列、弹性垫片和导电目标组成。在负载下，传感器显示电感的差分变化，这些电感由内置调节电路数字化并去耦。一个三维有限元（FE）模型开发的系统作为设计工具。这是经过实验验证，并证明了高度一致的结果。在多轴加载的实验评估中，传感器显示出在操作范围内的精确操作（RMSE：对于剪切（-1.5 N - 1.5 N）测量为0.05 N，对于法向力（0-13 N）测量为0.70 N）。然后使用有限元模型来研究目标的不期望的倾斜的影响。结果表明，在真实场景中，最小化目标的倾斜对于鲁棒操作是重要的。
Measurement of load information on the plantar (lower) surface of the foot can provide valuable insights to help identify pathologies like diabetic foot ulcers. Studies have shown that both plantar pressure and shear stress play an important role in foot disorders, especially ulcer formation. However, in this context shear stress is much less studied in comparison with pressure distribution, mainly due to the lack of reliable measurement technologies. In this paper, we propose a triaxial force sensor for measuring plantar loading. The sensor consists of an array of sensing coils combined with an elastomeric spacer and a conductive target. Under loading, the sensor demonstrates differential variations in inductance which are digitized by built-in conditioning circuitry and decoupled. A 3D finite element (FE) model was developed for the system as a design tool. This was validated experimentally and demonstrated a high agreement to the results. In experimental evaluation with multiaxial loading the sensor showed precise operation over the operating range (RMSE: 0.05 N for shear (-1.5 N - 1.5 N) and 0.70 N for normal force (0-13 N) measurements). The FE model was then used to investigate the effect of undesirable tilting of the target. The results indicated that it is important to minimize the tilting of the target for robust operation in real-world scenarios.
成功手术治疗年轻人踝关节骨折后的步态不对称
影响因子：
4.2
作者：
H. Becker;D. Rosenbaum;T. Kriese;H. Gerngross;L. Claes
通讯作者：
L. Claes
影响因子：
4.3
作者：
Wang, Hongbo;Jones, Dominic;Culmer, Peter
通讯作者：
Culmer, Peter