Abstract:
One of the causes of falls in the elderly can have
serious consequences, such as injuries and can even increase the
risk of death. Assistance can be provided more quickly if a fall
condition can be detected immediately. For that reason, the
author will make a tool to detect falls in the elderly that are
formed on the belt. using a belt as a medium because the belt is
a human need that cannot be separated from fashion. The tool
consists of SIM808 GPS, Node MCU, Accelerometer Sensor,
Buzzer and an android-based cellular. The control center is the
Node MCU which is equipped with a 6-axis IMU to detect the
movement of the user. And it is also equipped with a SIM808
GPS Module to transmit location and condition data from its
users. The GPS data is sent to Android, the Android is used to
receive the location of the fall on the user. The tool can detect
several falling conditions that can be sent to android. The
delivery process uses the internet. The algorithm to detect
falling motion uses a threshold-based fall-detection algorithm.
Design and Modeling starts from the Hardware Design, where
the design has a Node MCU as a control center that has input
and output. Node MCU inputs are Accelerometer sensors,
SIM808 GPS Shield. Where the accelerometer is used for fall
detection, then SIM808 GPS Shield is for location determination
and internet signals. The accelerometer sensor will produce
input in the form of angle and speed which will later be
processed so as to get one output for the user's condition. The
output on the Node MCU is the buzzer and sending data to the
Web Server. The workings of the system start at the Node MCU
which reads the accelerometer sensor. When the accelerometer
has passed the Threshold limit, the Node MCU will detect that
there is a fall condition for the user. Node MCU will
automatically activate the buzzer and send data to the thing
speak web server. Connecting between hardware and android
mobile where the hardware will be connected to the internet for
the process of sending data. The data transmission is sent
through the Web Server.
