ABSTRACT
Indonesia is a country that is crossed by a world ring of fire that has the potential for earthquakes and tsunamis. An earthquake is an occurrence of shaking the ground due to the sudden release of energy into the earth. Since earthquakes occur within an undetermined period, we need a device to detect earthquake vibrations as early as possible within few seconds and announce real-time warning information on the website. The monitor screen displays a flat, a slightly increasing, the alarm displays a sound “weak earthquake”, “moderate earthquake”, “strong earthquake”, “very strong earthquake”. The development of this system is to provide faster and more accurate information, and we can access the information on the internet network with broad coverage. The system can send the information within 5 second to user.
INTRODUCTION
The designing and making earthquake alarms with attractive designs and high accuracy is needed. We propose a designing and building earthquake warning system with Arduino and web-based SES60 SLP sensor. Selected SLP sensor because this sensor is realtime information and the filtering is manageable. This system automatically send the message on the monitor screen displays a flat, a slightly increasing, the alarm displays a sound “weak earthquake”, “moderate earthquake”, “strong earthquake”, “very strong earthquake”. When there are no earthquake waves, very small shaking, PGA>200 gals, PGA>400 gals, PGA>600 gals and PGA>800 gals respectively. The alarm announces watch out (hati-hati) for moderate earthquake PGA>200 gals, caution (waspada) PGA>400 gals and ask to evacuate for PGA>600 gals.
Basic concept of SES60 SLP sensor, SES60 SLP sensor was produced by Yamatake Company. The intelligent earthquake sensor is a detector that can estimate the damage caused by seismic motion. The using the output of the built-in accelerometer, the SES60 SLP sensor calculates SI values, which correspond to the measured seismic intensity, and maximum synthetic acceleration, that is used to estimate the damage caused by an earthquake.
The SES60 SLP sensor and its connection as shown in Figures 2 and 3. The sensor also can show the direction of acceleration from the epicenter. The SES60 SLP sensor specifications are in Table 1. Figure 3 shows installed SLP device SES 60 sensor.
Design device’s diagrams and manufacture
The planning of the diagram of designing and manufacturing the earthquake warnings with Arduino and web-based SLP SES60 earthquake sensor is in Figure 4. The diagrams design has the following functions: SES60 earthquake sensor serves to detect an earthquake that occurs. Data output from the sensor will be received by Arduino Uno as a microcontroller to process the sensor data. SES60 sensor data is input continuously into Arduino Uno. Arduino Uno as an input and output controller of all circuit work, ethernet Shield is a module used for connecting Arduino Uno to the internet with wire. WEB is a system site page for
processing and storing sensor data., the display is useful for displaying sensor data on a PC monitor screen., a
power amplifier is useful for magnifying the audio signal to amplify the sound, horn speakers’ serine is used
to giving a warning if there is an earthquake with a large force . Serine is made using amplifiers and
horn speakers. A power supply is useful for providing power supply for Arduino Uno .
The device working principle
In designing this device, the system works automatically. The SES60 sensor will detect the vibrations
of the earthquake. The results of the detection are converted to voltage levels. The voltage level is the input
in Arduino. Then, the Arduino changes the level data into digital data, then selects them to find out whether
there is vibration or not. If Arduino detects an earthquake vibration, the data is sent using the Ethernet Shield
module to the webserver. Data on the web server is recorded in the database. The main display of the PC
monitor is shown in three parts: the display of the current vibration; the display of the last earthquake; and
the history of earthquakes that have occurred. On the web, there is a voice to inform the public about the
strength of the earthquake, and mitigation that must be done by the community. This alarm uses an amplifier
and horn speaker.
RESULTS
The output is in acceleration from SLP device, this system can be applied too for others devices such accelerometer and seismograph. The monitor screen displays a flat, a slightly increasing, the alarm displays a sound “weak earthquake”, “moderate earthquake”, “strong earthquake”, “very strong earthquake”. When there are no earthquake waves, very small shaking, PGA>200 gals, PGA>400 gals, PGA>600 gals and PGA>800 gals respectively. The alarm announces watch out (hati-hati) for moderate earthquake PGA>200gal, caution (waspada) PGA>400 gals and ask to evacuate for PGA>600 gals as shown Figure 6.
Original Article link : Designing and building earthquake warning system with Arduino and web-based SES60 SLP sensor | Edidas | Bulletin of Electrical Engineering and Informatics (beei.org)
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