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	Design and Realization of an Early Pre-impact Fall Alarm System Based on MEMS Inertial Sensing Units
	Hui Qi Li; Ding Liang; Yun Kun Ning; Qi Zhang; Guo Ru Zhao
	2013
会议名称	4th International Conference of Bionic Engineering, ICBE 2013
会议地点	Nanjing, China
英文摘要	Falls are the second leading cause of unintentional injury deaths worldwide, so how to prevent falls has become a safety and security problem for elderly people. At present, because the sensing modules of most fall alarm devices generally only integrate the single 3-axis accelerometer, so the measured accuracy of sensing signals is limited. It results in that these devices can only achieve the alarm of post-fall detection but not the early pre-impact fall recognition in real fall applications. Therefore, this paper aimed to develop an early pre-impact fall alarm system based on high-precision inertial sensing units. A multi-modality sensing module embedded fall detection algorithm was developed for early pre-impact fall detection. The module included a 3-axis accelerometer, a 3-axis gyroscope and a 3-axis magnetometer, which could arouse the information of early pre-impact fall warning by a buzzer and a vibrator. Total 81 times fall experiments from 9 healthy subjects were conducted in simulated fall conditions. By combination of the early warning threshold algorithm, the result shows that the detection sensitivity can achieve 98.61% with a specificity of 98.61%, and the average pre-impact lead time is 300ms. In the future, GPS, GSM electronic modules and wearable protected airbag will be embedded in the system, which will enhance the real-time fall protection and timely immediate aid immensely for the elderly people.
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/5000]
专题	深圳先进技术研究院_医工所
作者单位	2013
推荐引用方式 GB/T 7714	Hui Qi Li,Ding Liang,Yun Kun Ning,et al. Design and Realization of an Early Pre-impact Fall Alarm System Based on MEMS Inertial Sensing Units[C]. 见:4th International Conference of Bionic Engineering, ICBE 2013. Nanjing, China.

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