Analysis of falling mechanism and prevention of falls in the elderly by accelerometry.

本研究的目的是开发一个动态跌倒监测系统。该系统必须体积小，重量轻，佩戴时不会感到不适。监视器由加速度计、CPU和数据记录仪组成，记录跌落前后的时间和加速度波形。显示器的尺寸为40×20×55毫米，重量为59克。人生只有七天。该监视器可以检测到碰撞加速度和身体的倾斜度。每次实验结束后，记录数据通过RS232C端口传输到上位机。在初步研究中，对一名经常跌倒的门诊病人进行了测试。因此，我们可以得到很长一段时间的下降时间。所开发的系统可能是检测日常活动中跌倒的有用工具

The aim of this study is to develop an ambulatory fall monitoring system. The system must be small, light and able to be worn without discomfort. The monitor consists of Accelerometer, CPU and data logger that records the time and acceleration waveform before and after falls. The monitor is 40×20×55 mm in size and 59 g in weight. The lifetime is seven days. The impact acceleration and the inclination of the body can be detected by this monitor. After each experiment, the recording data are transferred to the host PC via a RS232C port. In the preliminary study, the developed system was tested for one outpatient who frequently falls. As a result, we could obtain fall times for a long period. The developed system may be useful tool to detect falls in daily activity