Intelligent Mobility Systems

智能移动系统

• 批准号: RGPIN-2014-05101
• 负责人: Lemaire, Edward
• 金额: $ 1.97万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638485
• 关键词: Intelligent; Mobility; Systems

As our population ages, maintaining physical mobility is important for independence, quality of life, and aging in place. A convergence of technologies and methods are needed to further enhance how the elderly and people with mobility deficits move. Intelligent Mobility Systems (IMS) research brings together real-time information, sensor-aided decision-making, movement control, and movement generation to provide safe and effective locomotion in a person’s chosen environment. The IMS research program involves two inter-related streams: intelligent-wearable assistive devices and real-time movement evaluation. Both streams require real-time multi-signal acquisition from wearable sensors, feature extraction, classification, and output to either guide assistive device function or provide immediate information for clinical decision-making. The intelligent assistive device stream also requires mechanical engineering innovations to achieve wearable, durable, cost appropriate solutions that can be applied across the mobility disabled population. The Ottawalk-speed hydraulic knee joint concept will be the basis for the next generation in knee joint control by providing appropriate variable dampening as a person with limited or negligible knee extensor capacity walks in their community (i.e., stairs, ramps, stumble recovery). Effective microprocessor-control of fluid flow should provide appropriate knee flexion resistance for safe movement but supply minimal resistance, when appropriate, for energy efficient gait. The only available variable resistance knee ankle foot orthosis (KAFO) is a prosthetic knee unit outfitted to a KAFO. The proposed Ottawalk device will innovate by providing a lighter, lower profile, and superior controlled device for improved mobility. In parallel with the Ottawalk orthosis research, research with the new Exolegs lower extremity robotic exoskeleton platform will be initiated. This new Canadian exoskeleton approach presents a viable platform for research on powered mobility for people with paralysis or bilateral lower extremity weakness. As a self-supporting walking frame, size and weight limitations are less severe. However, optimal mechanical function and control questions remain. To improve tools for biomechanical decision-making, wearable sensors, wearable video, and smartphone technologies will be combined to provide a better understanding of human movement outside the laboratory. Improving immediacy of biomechanical information should improve adoption of quantitative and evidence-based decision-making, potentially improving outcomes for people with movement deficits. Research is required on wearable and smartphone sensor acquisition and location, sensor fusion to generate usable outcomes, integrating outcomes with multimedia for augmented reality presentation, and determining effective real-time methods for integrating quantitative outcomes into clinical practice. This research will build on our recent smartphone application research to augment clinical tests, provided augmented reality analysis of body position, and improved activity classification from smartphone sensors and video. While prototype applications have been developed, pilot tests are needed to verify application performance in practice. Next-phase research will improve smartphone-based mobility activity classification for people with pathological gait (amputee, stroke, etc.), enhance video tools for real-time/augmented reality analysis of human movement, integrate new smartphone sensors into classification algorithms, and provide immediate smartphone-based analysis of human movement that can be used at the point of patient contact.

随着人口老龄化，保持身体活动能力对于独立、生活质量和居家养老非常重要。需要融合技术和方法来进一步改善老年人和行动不便者的移动方式。智能移动系统 (IMS) 研究汇集了实时信息、传感器辅助决策、运动控制和运动生成，以在人们选择的环境中提供安全有效的运动。 IMS研究项目涉及两个相互关联的领域：智能可穿戴辅助设备和实时运动评估。这两个流都需要从可穿戴传感器进行实时多信号采集、特征提取、分类和输出，以指导辅助设备功能或为临床决策提供即时信息。智能辅助设备流还需要机械工程创新，以实现可穿戴、耐用、成本合适的解决方案，适用于行动不便的人群。 Ottawalk 速度液压膝关节概念将成为下一代膝关节控制的基础，通过为膝关节伸肌能力有限或可忽略不计的人在社区中行走（即楼梯、坡道、跌倒恢复）提供适当的可变阻尼。有效的微处理器控制流体流动应为安全运动提供适当的膝盖弯曲阻力，但在适当时提供最小的阻力，以实现节能步态。唯一可用的可变阻力膝踝足矫形器 (KAFO) 是配备 KAFO 的假肢膝关节装置。拟议的 Ottawalk 设备将通过提供更轻、外形更小、控制更优越的设备来实现创新，从而提高移动性。在 Ottawalk 矫形器研究的同时，新型 Exolegs 下肢机器人外骨骼平台的研究也将启动。这种新的加拿大外骨骼方法为瘫痪或双侧下肢无力的人的动力移动研究提供了一个可行的平台。作为自支撑助行架，尺寸和重量限制不太严格。然而，最佳机械功能和控制问题仍然存在。为了改进生物力学决策工具，可穿戴传感器、可穿戴视频和智能手机技术将被结合起来，以更好地了解实验室外的人体运动。提高生物力学信息的即时性应该可以提高定量和基于证据的决策的采用，从而有可能改善运动缺陷患者的治疗结果。需要对可穿戴和智能手机传感器采集和定位、传感器融合以生成可用结果、将结果与多媒体集成以进行增强现实演示以及确定将定量结果集成到临床实践中的有效实时方法进行研究。这项研究将建立在我们最近的智能手机应用研究的基础上，以增强临床测试，提供身体位置的增强现实分析，并改进智能手机传感器和视频的活动分类。虽然原型应用程序已经开发出来，但仍需要进行试点测试来验证应用程序在实践中的性能。下一阶段的研究将改进针对病理步态（截肢者、中风等）患者的基于智能手机的移动活动分类，增强用于人体运动实时/增强现实分析的视频工具，将新的智能手机传感器集成到分类算法中，并提供可在患者接触点使用的基于智能手机的即时人体运动分析。