2.2.3 Fall Detection System Using Accelerometer and Gyroscope Based on
Smartphone
Beside that the physical activity recognition, accelerometer and gyroscope
sensor data on our smartphone also can use to develop a fall detection system. Arkham Zahri Rakhman et.al. develop an fall detection system by using these motion sensors
[8]. They stated that the accelerometer and gyro sensors that inside our smartphone can offer a more accurate effect of fall detection motion. There will have an automatic
call for user’s family members when the user’s had any fatal condition when using this application. Besides that, this study also describes the condition of people between
falls and activity daily living. By taking the sensor data for accelerometer and gyroscope, they get their own algorithm for detecting a failing condition for the user.
With this fall detection system, it can be avoided, many cases of accidentally happened in the household when there is just the older people alone in the mansion. This
arrangement can save their spirits.
Figure 2.2: Axis of the gyroscope and accelerometer.
2.2.4 Movement Pattern Recognition through Smartphone’s Accelerometer
In addition, presently there experienced an investigation suggest that sensor allowed smartphone’s have grown to be the popular system with regard to scientists
because of their capability to gather as well as procedure big amounts associated with information, therefore making brand new possibilities with regard to revolutionary
android application, through Armir Bujari et.al. 2012 [9]. This may be the primary inspiration with this application which experienced created. In the following
paragraphs, additionally they talk about concerning the motion design acknowledgement within daily depending on city road conduct. Like an example, these
people limit from realizing a scenario whenever a pedestrian cease, traversing the road dominated with a visitors gentle. They make use of these types of information in the
accelerometer sensor in the smartphone gadget to accomplish their own research.
2.2.5 Smartphone Indoor Localization with Accelerometer and Gyroscope
Other that physical activity recognition and fall detection system, accelerometer and gyroscope sensor data also can use to develop an indoor localization
system. Hui-Huang Hsu et.al, 2014 develop a smartphone indoor positioning application by using accelerometer and gyroscope sensor [10]. They build a pedestrian
dead reckoning method in their application. The calibration points for the localized application are checked off both on the ground floor and on the map of the application.
The user first need to get a calibration mark and then stand on it and then face to the correct direction. After that the user need to place the Android smartphone on the top
of the calibration point. When the user start to strike, the android icon on the application will also run on the map following with the real time estimates of the
orientation change for each step from accelerometer and gyroscope data respectively. The preliminary outcomes for their application in walking distance and orientation
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