Electronic Theses and Dissertation

Produksi durian di Kabupaten Aceh Barat Daya, khususnya di Kecamatan Babahrot, menurun pada tahun 2021–2022 akibat serangan hama monyet yang merusak tanaman dan mengganggu aktivitas pertanian. Metode pengusiran manual, seperti penggunaan kentongan, kurang efektif karena memerlukan kehadiran manusia secara langsung. Penelitian ini merancang dan mengimplementasikan sistem pengusir hama berbasis Internet of Things (IoT) yang bekerja otomatis dan dapat dipantau dari jarak jauh. Sistem menggunakan sensor PIR untuk mendeteksi keberadaan hama, mengaktifkan suara pengusir melalui speaker, dan mengirimkan notifikasi real-time kepada pengguna melalui aplikasi Telegram, dengan dukungan sumber energi terbarukan untuk operasi sepanjang hari. Pengujian menunjukkan bahwa intensitas suara speaker menurun seiring jarak, dari 100,7 dB pada 3 meter hingga 81,8 dB pada 24 meter di arah depan, dan 39,0–46,3 dB pada 30–50 meter di arah kiri dan kanan, namun tetap efektif mengusir monyet karena berada di atas ambang minimal 40 dB. Waktu delay komunikasi sensor ke speaker melalui protokol Message Queuing Telemetry Transport (MQTT) berada pada kisaran 31–144 ms, dengan nilai rata-rata tetap di puluhan milidetik, jauh di bawah 1 detik, sehingga sistem mampu merespons hampir secara real-time. Integrasi dengan Bot Telegram memungkinkan notifikasi real-time, kontrol jarak jauh, monitoring, pengaturan suara alarm, pemeriksaan status, dan pengelolaan notifikasi, yang seluruhnya berfungsi sesuai rancangan dan mempermudah pengendalian sistem oleh pengguna.

Durian production in Aceh Barat Daya Regency, particularly in Babahrot District, declined during 2021–2022 due to monkey pest attacks that damaged crops and disrupted agricultural activities. Manual pest deterrence methods, such as the use of wooden clappers, are considered ineffective because they require continuous human presence. This study designs and implements an Internet of Things (IoT)–based pest repellent system that operates automatically and can be monitored remotely. The system utilizes a Passive Infrared (PIR) sensor to detect pest presence, activates an audio deterrent through a speaker, and sends real-time notifications to users via the Telegram application, supported by a renewable energy source to enable continuous operation. Experimental results indicate that the speaker sound intensity decreases with distance, from 100.7 dB at 3 meters to 81.8 dB at 24 meters in the forward direction, and from 39.0 to 46.3 dB at distances of 30–50 meters on the left and right sides; however, the sound level remains effective in repelling monkeys as it exceeds the minimum threshold of 40 dB. The communication delay from the sensor to the speaker via the Message Queuing Telemetry Transport (MQTT) protocol ranges from 31 to 144 ms, with an average value remaining within tens of milliseconds and well below 1 second, indicating that the system is capable of near real-time response. Integration with a Telegram Bot enables real-time notifications, remote control, monitoring, alarm sound configuration, status checking, and notification management, all of which function as designed and facilitate effective system control by users.