Ambulatory system for measuring and monitoring physical activity and risk of falling and for automatic fall detection

摘要: The present invention relates to a light-weight, small and portable ambulatory sensor for measuring monitoring person's physical activity. Based on these measurements computations, the invented system quantifies subject's activity, gait, determines his or her risk of falling, automatically detects falls. combines features portability, high autonomy, real-time computational capacity. High autonomy is achieved by using only accelerometers, which have low power consumption rates as compared with gyroscope-based systems. Accelerometer measurements, however, contain significant amounts noise, must be removed before further analysis. therefore uses novel time-frequency filters denoise in conjunction biomechanical models human movement, perform requisite may also done real time.