| Summary: | Physical ability of elderly person will degrade as the aging process occurs, thereby
increasing the probability of falls. Falls on the elderly may have serious impact such as
injury or even death if they do not get help immediately. Aid may be given more quickly
if the occurrence of falls can be immediately detected. This paper proposes the fall
detection technique that is implemented Android smartphone. The proposed technique
computes the total acceleration and tilt angle from accelerometer sensor in smartphone.
Fall is detected based on total acceleration and sum of difference of total acceleration.
The tilt angle is used to indicate whether a forward fall, backward fall, fall to the left,
or fall to the right. In this study, we compared technique that uses the sum of difference
of total acceleration and technique without it. Both techniques have a sensitivity of 90%
and specificity of 94% in a total set of 490 movements.
Keywords : Elderly, accelerometer, total acceleration, sum of difference of total acceleration,
tilt angle, Android.
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