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Ambulatory Gait Measurement System for Natural Environments

机译：自然环境的步行步态测量系统

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摘要

In this paper, we propose a novel ambulatory gait measurement system, based on a wireless sensor network consisting of four sensor nodes that measure the acceleration of specific spots of the lower limbs. The main novelty of the proposed system is that it can be used outside specialized laboratories in outdoor environments, where the natural and spontaneous gait is favored. The system measures the tri-axial ±8g acceleration, allowing the full characterization of the complete gait cycle of both the lower limbs. For the deployment, we opted for a commercial solution and selected the SunSPOT devices that are the most appropriate from both technical and cost points of view. We also performed multiple experiments in order to technically validate the proposed measuring system, including battery duration and memory stress tests, to show its sufficiency in terms of energy and storage resources. In conclusion, with this paper, we show that it is possible to measure gait physiological signals in a natural environment using commercial products, prioritizing the comfort and the natural motion of the person that is measured.
机译：在本文中，我们提出了一种新型的步行步态测量系统，该系统基于一个无线传感器网络，该网络由四个传感器节点组成，可测量下肢特定部位的加速度。拟议系统的主要新颖之处在于，它可以在室外环境中的特殊实验室之外使用，在这种环境中，自然步态和自发步态是有利的。该系统可测量三轴±8g的加速度，从而可以完全表征两个下肢的整个步态周期。对于部署，我们选择了商业解决方案，并从技术和成本角度选择了最合适的SunSPOT设备。我们还进行了多次实验，以从技术上验证所提议的测量系统，包括电池持续时间和内存压力测试，以显示其在能源和存储资源方面的充分性。总之，通过本文，我们表明可以使用商业产品在自然环境中测量步态生理信号，并优先考虑被测者的舒适度和自然运动。

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