<span>This paper reports the wireless vibration detector design and characterization for practical applications. System is built by using the ATmega microcontrollers, working on a free license 433 MHz frequency. Hardware characteristics are defined through experimental assessments. Assessment mainly on sensor output and sensor installation characteristics. As results, hardware is working as expected, where vibration level achieves at most 13% detection for 12 g vibration source. The vertical axis of the MPU6050 vibration detector results 87.5 times higher detection than in horizontal axis. Detected vibration increases from 1.03 g to 2.61 g when source-sensor distance is shortened from 10 cm to 2 cm. The aluminium sheet as sensor pad causes detection of 8.69 times higher than on ceramic pad. The lower the detection period the better the detection amplitude. However, the lower the period, the higher the consumed power. Microcontroller sleep mode is not suitable for short period detection. The node-based data validation to avoid transmitting false detection is not influencial for short period detection.</span>
Internet of Things (IoT) has been very assistive in monitoring remote sites by placing some sensors connecting to the internet. Some sensors are located in fully available electrical sources; while some applications rely on the use of a battery. This paper concerns the latest, considering the quality of the sensed data against the power shortage. Vibration detection is chosen as the measured application. The remote sensor was designed by using MPU 6060, controlled by ATmega328 and connected to the internet through an intermediate node using 433 MHz radio. Intermediate node was controlled by ATmega8. Vibration data sent to the internet consists of minor and major vibrations. Major vibration occurs incidentally. Measurement shows that the sorter the data transmission period, the more effective sensor detecting major vibration. It is shown by the increment of vibration amplitude when the transmission period shorter. However, the more frequent the transmission, the more energy required. The assessment shows that data quality and power lifetime are determined by the transmission period.
- The importance of learning media is utilized by ATKP Medan as an opportunity to continue to improve the quality of learning. However, the most common problem in avionic learning is the limited resources available. This is because to access Avionic learning, cadets can only access it from LAB CBT. This is because Avionic software is only installed inside the lab and cannot be learned from outside the lab. The purpose of this research is to improve the learning process of Avionic - Automatic Direction Finding System digitally which is packaged in multimedia animation to make it easier for cadets to learn the Avionic Automatic Direction Finding System without having access in the laboratory. The method used in this study is to use the MDLC Multimedia Development Life Cycle method, namely the Concept, Design, Material Collecting, Manufacturing, Testing, Distribution methods. The learning media produced from this study are by displaying 5 types of display pages, namely Introduction, ADF Components, Sense Antennas, Antenna Components, and Direction Finding System.Keywords - Learning Media, Avionic, ADF, ATKP Medan Abstract - Pentingnya media pembelajaran dimanfaatkan oleh ATKP Medan sebagai kesempatan untuk terus meningkatkan mutu pembelajaran. Namun, permasalahan yang paling sering terjadi dalam pembelajaran avionic adalah adanya keterbatasan resource yang ada. Hal ini dikarenakan untuk mengakses pembelajaran Avionic para taruna hanya bisa mengaksesnya dari LAB CBT. Hal ini disebabkan software Avionic hanya terpasang didalam lab dan tidak bisa dipelajari dari luar lab. Tujuan dalam penelitian ini adalah meningkatkan proses pembelajaran Avionic - Automatic Direction Finding System secara digital yang dkemas dalam animasi multimedia untuk memudahkan para taruna untuk mempelajari Avionic Automatic Direction Finding System tanpa harus akses di laboratories. Metode yang digunakan dalam penelitian ini adalah menggunakan Dengan menggunakan metode Multimedia Development Life Cycle MDLC yaitu metode Konsep (Concept), Perancangan (Desain), Pengumpulan Bahan (Material Collecting), Pembuatan (Assembly), Pengujian (Testing), Distribusi (Distribution). Media pembelajaran yang dihasilkan dari penelitian ini adalah dengan menampilkan 5 jenis halaman tampilan yaitu Introduction, Komponen ADF, Sense Antenna, Komponen Antena dan Direction Finding System.Kata kunci - Media Pembelajaran, Avionic, ADF, ATKP Medan.
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