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硕士论文-老年人群意外跌倒过程中的身体姿态感知技术研究，正文共65页。
【摘要】 随着社会的不断进步,社会老年化成为21世纪全球不可逆转的趋势。由于各种原因,世界老年人空巢比率正以较快的速度增长。空巢家庭中老年人的健康隐患和日常安全问题已经引起了社会的广泛关注,采用现代信息技术,对空巢家庭中老年人的日常行为进行医疗监护,成为国内外许多科研机构的重点研究课题,而人体姿态的感知技术是老年人日常监护最重要、最基本的内容。本课题研究面向老年特殊人群的人体姿态感知系统,重点研究人体发生跌倒过程姿态变化的监测方法和技术,探索建立一种的有效人体姿态感知技术和方法,设计开发实验室环境的人体跌倒事件感知监测系统。实验系统采用飞思卡尔公司推出的MMA7260Q加速度传感器和MC9S08QG8单片机,实现了面向老年特殊人群的人体姿态感知系统,可以实时监控人体活动数据信息,并在监测到人体发生意外摔倒的时候发出预报警,如果被监护人意识清醒,不需要接受他人的救助,可以选择取消报警；如果15秒内没有取消报警的指令输入,那么系统将发出正式报警。该系统的低功耗以及高灵敏度的特性,使得其在老年人日常生活护理方面优势比较明显。理论研究和实验证明,系统使用的加速度传感器可以精确地监测到人体运动过程中加速度矢量的变化,能够很好地实现系统的需求。人体姿态感知系统能够较为准确地监测人体跌倒事件,可以及时为监护人员提供救助信息,避免因意外摔倒而带来的严重后果。
【Abstract】 The aging society has become irreversible trend of 21st century with the society progressing. For various reasons, the rate of the world’s elderly empty-nest is increasing with rapid pace. Health risks and daily security issue of elder people in empty nesters has caused widespread concern in society. Taking care of daily behavior of elderly people in empty nest with modern information technology has become key research topics in many research institutions at home and abroad. The body posture sensing technology is the most important and basic content in daily care of the elderly.This topic is researching human gesture sensing system for old special populations, which focuses on the research of methods and techniques for monitoring while the human body falling. The topic is to explore the establishment of an effective technology and methods of body posture perception, so as to design and develop human fall event perception and monitoring system in lab environment. Our experimental system adopts MMA7260Q acceleration sensors and MC9S08QG8 SCM launched by Freescale, implementing human gesture sensing system based on acceleration sensor, which can real-time monitor human activity data, and can pre-alarm when monitoring the falling of human body. If the guardian is conscious and do not need the assistance of others may choose to cancel the alarm. If there is no command input of cancelling the alarm within 15 seconds, the system will present formal alarm. The characteristics of low power consumption and high sensitivity of this system make the advantages obvious in daily care of elderly.Theoretical and experiment results show that the acceleration sensor systems can accurately monitor the change of acceleration vector of human motion, and can realize the needs of the system very well.
【关键词】 加速度传感器； 人体姿态； 单片机； 空巢老人；
【Key words】 Accelerometer； body gesture； SCM； Empty nesters；