TUGAS BEDAH JURNAL 2

 

     Nama               : FATHONI

     NPM                : 22417233

     Kelas               : 3IC05

MATA KULIAH METODOLOGI PENELITIAN

JURUSAN TEKNIK MESIN

FAKULTAS TEKNOLOGI INDUSTRI

UNIVERSITAS GUNADARMA

KALIMALANG

2019

EQUIPMENT OF EARTHQUAKE DETECTION AND WARNING WITH VIBRATION SENSOR 

Dyane Putriera Anggraeni^a, Nonoh Siti Aminah^b, Yohanes Radiyono^c

Physic Education, Sebelas Maret University, Surakarta, 57126, Indonesia

Abstrak

Tujuan dari penulisan makalah ini adalah untuk menentukan: (1) prinsip kerja sensor getaran bisa mendeteksi akan terjadinya gempa bumi, (2) kepekaan atau sensitivitas alat bila digunakan dalam mendeteksi getaran gempa bumi, (3) alat demonstrasi Gempa Deteksi dan Peringatan dengan sensor getaran memiliki baik memenuhi kriteria untuk siswa digunakan belajar. Metode penelitian ini adalah alat demonstrasi dalam pembelajaran. Prinsip dasar kerja dan detektor gempa peringatan dengan sensor getaran ini adalah ketika gempa terjadi atau saat dinamo (simulator gempa) dimulai, getaran yang dihasilkan penyebab gerakan pendulum. Gerakan pendulum ini adalah apa yang akan memicu bunyi bel. Ketika gerakan pendulum menyebabkan pendulum kontak dengan cincin kawat tembaga, maka listrik akan mengalir ke arah bel. Ketika listrik mengalir ke bel akan muncul dalam getaran membran di bel. Sebuah membran bergetar akan menghasilkan resonansi yang kemudian menyebabkan gelombang. Gelombang ini adalah apa yang menghasilkan suara pada bel. Pendulum frekuensi getaran berkaitan erat dengan besarnya tegangan / beda potensial yang diberikan masukan pada dinamo yang menyebabkan rotor berputar. Meningkatkan tegangan akan meningkatkan kecepatan rotasi rotor pada dinamo besar. Semakin cepat rotasi rotor, getaran bandul akan semakin besar. Hal ini mengakibatkan pendulum akan lebih cepat dan lebih sering kawat lingkaran tembaga menyentuh yang terhubung listrik dan bel. Dengan demikian buzzer akan berbunyi semakin cepat dan dinamis. Hasil percobaan yang semakin besar jumlah loop dan semakin besar tegangan akan menyebabkan kecepatan rotasi yang lebih besar dari rotor dihasilkan, sehingga semakin besar getaran pendulum dan buzzer / alarm terdengar lebih dinamis. Detektor dan gempa peringatan dengan sensor getaran memiliki kepekaan terhadap jumlah loop mulai dari 2 buah dengan tegangan input 3V dan mampu mendeteksi gempa ≥3,6 SR. Berdasarkan hasil penilaian dari deteksi alat demonstrasi dan peringatan gempa bumi dengan sensor getaran ditemukan bahwa nilai maksimum yang diisi oleh validator adalah Detektor dan gempa peringatan dengan sensor getaran memiliki kepekaan terhadap jumlah loop mulai dari 2 buah dengan tegangan input 3V dan mampu mendeteksi gempa ≥3,6 SR. Berdasarkan hasil penilaian dari deteksi alat demonstrasi dan peringatan gempa bumi dengan sensor getaran ditemukan bahwa nilai maksimum yang diisi oleh validator adalah Detektor dan gempa peringatan dengan sensor getaran memiliki kepekaan terhadap jumlah loop mulai dari 2 buah dengan tegangan input 3V dan mampu mendeteksi gempa ≥3,6 SR. Berdasarkan hasil penilaian dari deteksi alat demonstrasi dan peringatan gempa bumi dengan sensor getaran ditemukan bahwa nilai maksimum yang diisi oleh validator

RESEARCH METHOD

The method of making a tool used in the study is a demonstration tool in learning.The method of making these tools for sensitivity or sensitivity to know when the tool is used in detecting the vibration of the earthquake seen from the potential difference. Demonstration method to demonstrate the concept of Vibrations and Waves and concepts Center Mass or point  of weight, that is when the earth shakes or when the earthquake simulator (dynamo) is turned on, vibrations propagate in the Earth's plates will cause the pendulum to move and vibrate and cause the pendulum touches the circle copper wire connected electricity, and bell. So the sound of the bell sign earthquakes has been / is going.

Research carried out starting with the preparation stage, which includes literature review and prepare the tools and materials needed to make the detector and earthquake warning with vibration sensors. 

The next stage is the making of a series of detectors and earth quake warning with vibration sensors. At this stage it will be testing tools as well as data retrieval. Then in the last stage of this research is the analysis of data. This demonstration tool perhaps to have good criteria for students. 

DATA ANALYSIS

Based on the research that has been implemented then obtained the following results:

Figure 2. Tools of Earthquake Detection and Warning

Qualitative Data

Based on the chart, we concluded the greater the voltage or electrical voltage which issued the greater the rotational speed is generated. The power supply voltage has an important role in detection equipment and earthquake warning with vibration sensors this by increasing the voltage will cause greater rotational speed, this has resulted in increasingly large pendulum vibrations and buzzer / alarm will sound more dynamic from the observational data it can be concluded that based on the number of loop voltage variation detector 2 pieces and earthquake warning with vibration sensor has a sensitivity with a starting voltage of 3 V to the number of loops 2 pieces. In his research Irnanda (2013) states that the input voltage of 5 V is able to detect an earthquake of magnitude 6.

Diagram 1. Relationship beetwen voltage and ω

Demonstration Tool Earthquake Detection and Warning with Vibration Sensor has Good Meets Criteria for Use Students Learn

Beads of assessment validation and warning earthquake detector with vibration sensor in Annex 2 covers three aspects: the display, the aspect of conformity with the matter physics experimental tools as well as aspects of the success rate of the use of demonstration tools.

Based on the evaluation of the detector and warning earthquake vibration sensor was concluded, among other things:

1.    Display Aspects

Detector and earthquake warning with vibration sensor judged from the aspect look good already meet the criteria which includes the selection of the type of materials that are easily obtainable, component layout has been arranged with props as well as visual display of props was simple and uncomplicated.

2.    Aspects of Compliance Viewer tool with Matter Physics and Community and Student Needs

Based on the results of the validation, and warning earthquake detector by using  a vibration sensor in accordance with the basic principles of the physics of matter that is the subject of Vibrations and Waves, Point Weight, Playback Speed (ω). Goals developed detection and warning of earthquakes with vibration sensors that facilitate the public in general to anticipate the occurrence of an earthquake so as to minimize the impact of the quake. In the other hands, this tool compliance with student needs.

3.    Aspects Success Rate Using Viewer Tool Detector and earthquake warning with

vibration sensors have been successfully demonstrated in particular physics concept shows the effect of input voltage variation of the rotational speed (ω) is generated and can detect and alert terjadinyan earthquake through the alarm. The greater the input voltage will cause the rotor further rotates rapidly and irregularly. Thus the pendulum vibration will be greater and the alarm will sound faster and dynamic.

The total amount of the item of validation is 10. The highest score achieved for the overall ideal is (10 x 5 = 50), the ideal minimum score achieved is (10 x 1 = 10), with a mean ideal (Mi) 30 and the standard deviation of the ideal (Sbi) 6,67.

Based on the results of the assessment of a demonstration tool detection and warning of earthquakes with vibration sensor was  found that the maximum value that is filled by a validator is 39. It can be concluded that the demonstration tool detection and warning of earthquakes with vibration sensor is included in good criteria for the use of students’ learn.

REFERENCES

1.  Afriani, Fitri. 2010. Design Sistem Peringatan Dini Gempa Bumi Menggunakan Sensor berbasis Mikrokontroler ATMEGA8535. Physic’c Conference: State University of Padang.

2.  Arief S. Sadiman dkk. 2009. Media Pendidikan: Pengertian, Pengembangan, dan Pemanfaatannya. Jakarta: PT. Rajawali Pers.

3.    Bayong, TJ. 2013. Ilmu Kebumian dan Antariksa. Bandung: PT. Remaja Rosdakarya.

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5.   Haifani, Achmad Muktaf. 2008. Manajemen resiko bencana gempa bumi. In procidding of Seminar Nasional IV SDM Teknologi Nuklir: STTN- BATAN, 25-25 Agustus 2008. Yogyakarta. 285. ISSN 1978-0176.

6.   Irnanda. 2013. Transmisi Sinyal Audio melalui Media Jala-Jala Listrik. Jurnal Elektro. Fakultas Teknik Universitas Bengkulu.

7.   Kertapati, E. K.. 2004. Aktivitas Gempa bumi di Indonesia, Pusat Penelitian dan Pengembangan Geologi, Badan Penelitian dan Pengembangan, Departemen Energi dan Sumber Daya Mineral.

8.   Muhammad, Andang. 2012. Sistem Deteksi Dini Gempa dengan Piezo Elektrik. Di dalam: Siposium Nasional RAPI XI FT UMS. ISSN 14124-9612.

9.   Musfiqon. 2012. Pengembangan Media dan Sumber Pembelajaran. Jakarta: Prestasi Pustakakarya.