PERANCANGAN ALAT PENGUKUR TINGGI GELOMBANG LAUT BERBASIS SENSOR ULTRASONIK DAN INTERNET OF THINGS (IOT)

Abstrak

Alat pengukur ketinggian gelombang air berbasis sensor ultrasonik merupakan perangkat inovatif yang dirancang untuk mengukur tinggi gelombang tanpa interaksi langsung dengan air. Sensor JSN-SR04T yang digunakan memiliki sensitivitas tinggi terhadap variasi jarak dan terhubung dengan mikrokontroler ESP32 berbasis Internet of Things (IoT). Sistem ini memungkinkan pengiriman data secara real-time melalui jaringan internet, memberikan kemudahan akses dan pemantauan jarak jauh. Hasil pengujian menunjukkan bahwa alat ini mampu mengukur tinggi gelombang maksimum sebesar 3,69 cm dan minimum 2,14 cm dengan rata-rata 3,0660 cm. Pengukuran manual menunjukkan hasil yang sebanding, dengan tinggi maksimum 3,6 cm dan minimum 2,2 cm. Perbandingan data menunjukkan tingkat akurasi sebesar 99,96%, menjadikan alat ini efektif, andal, dan layak digunakan sebagai solusi modern untuk sistem pemantauan tinggi gelombang laut berbasis IoT.

Ultrasonic sensor-based water wave height measuring device is a device designed to measure wave height without direct interaction with water. The ultrasonic sensor used is the JSN-SR04T type because it has high sensitivity to distance variations, economical price, ease of maintenance, and availability of spare parts in the local market. This sensor is also equipped with Internet of Things (IoT) technology based on the ESP32 microcontroller, which allows measurement results to be sent and accessed in real-time via the internet network. The results of the water wave height measurement using the sensor showed that the maximum wave height detected was 3.69 cm, while the minimum wave was recorded at 2.14 cm with an average of 3.0660. Meanwhile, in the manual measurement, the maximum wave height reached 3.6 cm and the minimum was 2.2 cm with an average of 2.9625cm. After analysis, the final results show that this tool has an accuracy rate of 99.96%. The standard deviation value obtained from the sensor results is 0.345035, while the manual measurement is 0.345151. Thus, this tool is proven to be effective, reliable, and feasible to use as a modern solution in the Internet of Things (IoT)-based seawater wave height monitoring system.