随着我国进入老龄化,老年人的健康监护越来越受到人们的关注,传统的健康监护模式已不能满足需求.而传统的面向家庭用的监护系统比较少,而且功能比较单一、操作性比较复杂、实时性差、价格比较昂贵.近年来伴随着MEMS技术、集成电路技术...随着我国进入老龄化,老年人的健康监护越来越受到人们的关注,传统的健康监护模式已不能满足需求.而传统的面向家庭用的监护系统比较少,而且功能比较单一、操作性比较复杂、实时性差、价格比较昂贵.近年来伴随着MEMS技术、集成电路技术、无线通信技术的不断进步,无线体域网系统(wireless body sensor network)得到长足发展.基于无线体域网技术的应用系统也越来越受到人们的重视.设计了一种基于无线体域网技术的老年人健康监护系统.介绍了基于无线体域网技术的老年人健康监护系统的系统总体架构,重点介绍了无线体域网节点的设计以及无线体域网的系统构成.无线体域网节点包括无线心电与脉搏节点、无线血氧与体温节点.并介绍了各个生理参数的检测方法与检测电路.最后给出了生理参数的检测结果以及智能终端上的处理显示结果.展开更多
无线体域网络(wireless body sensor network,WBSN)在远程医疗保健、特殊人群监护等领域的应用已引起广泛关注。能量严格受限的场景使WBSN对节点的能耗要求非常高,因此能量消耗问题已经成为了对于无线体域网发展的主要挑战,而功率控制...无线体域网络(wireless body sensor network,WBSN)在远程医疗保健、特殊人群监护等领域的应用已引起广泛关注。能量严格受限的场景使WBSN对节点的能耗要求非常高,因此能量消耗问题已经成为了对于无线体域网发展的主要挑战,而功率控制可以有效节省能量的消耗。设计了一种基于比例、积分、微分的神经网络(single-out PID proportion integral derivative neural network,SPIDNN)自适应网络功率机制来动态调整无线体域网中传感器节点的发射功率控制方法,利用具有自学习的PID控制算法来动态调整发射功率的大小。通过实验将所提算法与体域网中网内经典功率控制算法乘增加减(multiplicative increase additive decrease,MIAD)算法以及传统基于偏差的比例、积分、微分(proportion integral derivative,PID)控制算法进行了对比。实验结果证明,该算法不仅提高了收包率,保证了链路的质量,而且在相同的实验环境下,发送2 000个数据包的总耗能分别降低了20%以及16.6%。该算法在性能上优于MIAD和PID控制算法,为无线体域网中传感器的控制节能问题提供了一个较好的解决方案。展开更多
It has been reported that, through the evanescent near fields, the strongly coupled magnetic resonance is able to achieve an efficient mid-range Wireless Power Transfer (WPT) beyond the characteristic size of the reso...It has been reported that, through the evanescent near fields, the strongly coupled magnetic resonance is able to achieve an efficient mid-range Wireless Power Transfer (WPT) beyond the characteristic size of the resonator. Recent studies on of the relay effect of the WPT allow more distant and flexible energy transmission. These new developments hold a promise to construct a fully wireless Body Sensor Network (wBSN) using the new mid-range WPT theory. In this paper, a general optimization strategy for a WPT network is presented by analysis and simulation using the coupled mode theory. Based on the results of theoretical and computational study, two types of thin-film resonators are designed and prototyped for the construction of wBSNs. These resonators and associated electronic components can be integrated into a WPT platform to permit wireless power delivery to multiple wearable sensors and medical implants on the surface and within the human body. Our experiments have demonstrated the feasibility of the WPT approach.展开更多
In this paper, we introduce a system architecture for a patient centered mobile health monitoring (PCMHM) system that deploys different sensors to determine patients’ activities, medical conditions, and the cause of ...In this paper, we introduce a system architecture for a patient centered mobile health monitoring (PCMHM) system that deploys different sensors to determine patients’ activities, medical conditions, and the cause of an emergency event. This system combines and analyzes sensor data to produce the patients’ detailed health information in real-time. A central computational node with data analyzing capability is used for sensor data integration and analysis. In addition to medical sensors, surrounding environmental sensors are also utilized to enhance the interpretation of the data and to improve medical diagnosis. The PCMHM system has the ability to provide on-demand health information of patients via the Internet, track real-time daily activities and patients’ health condition. This system also includes the capability for assessing patients’ posture and fall detection.展开更多
文摘随着我国进入老龄化,老年人的健康监护越来越受到人们的关注,传统的健康监护模式已不能满足需求.而传统的面向家庭用的监护系统比较少,而且功能比较单一、操作性比较复杂、实时性差、价格比较昂贵.近年来伴随着MEMS技术、集成电路技术、无线通信技术的不断进步,无线体域网系统(wireless body sensor network)得到长足发展.基于无线体域网技术的应用系统也越来越受到人们的重视.设计了一种基于无线体域网技术的老年人健康监护系统.介绍了基于无线体域网技术的老年人健康监护系统的系统总体架构,重点介绍了无线体域网节点的设计以及无线体域网的系统构成.无线体域网节点包括无线心电与脉搏节点、无线血氧与体温节点.并介绍了各个生理参数的检测方法与检测电路.最后给出了生理参数的检测结果以及智能终端上的处理显示结果.
文摘It has been reported that, through the evanescent near fields, the strongly coupled magnetic resonance is able to achieve an efficient mid-range Wireless Power Transfer (WPT) beyond the characteristic size of the resonator. Recent studies on of the relay effect of the WPT allow more distant and flexible energy transmission. These new developments hold a promise to construct a fully wireless Body Sensor Network (wBSN) using the new mid-range WPT theory. In this paper, a general optimization strategy for a WPT network is presented by analysis and simulation using the coupled mode theory. Based on the results of theoretical and computational study, two types of thin-film resonators are designed and prototyped for the construction of wBSNs. These resonators and associated electronic components can be integrated into a WPT platform to permit wireless power delivery to multiple wearable sensors and medical implants on the surface and within the human body. Our experiments have demonstrated the feasibility of the WPT approach.
文摘In this paper, we introduce a system architecture for a patient centered mobile health monitoring (PCMHM) system that deploys different sensors to determine patients’ activities, medical conditions, and the cause of an emergency event. This system combines and analyzes sensor data to produce the patients’ detailed health information in real-time. A central computational node with data analyzing capability is used for sensor data integration and analysis. In addition to medical sensors, surrounding environmental sensors are also utilized to enhance the interpretation of the data and to improve medical diagnosis. The PCMHM system has the ability to provide on-demand health information of patients via the Internet, track real-time daily activities and patients’ health condition. This system also includes the capability for assessing patients’ posture and fall detection.
