Enhanced Efficiency of Coffee Fruit Ripe Sorting System through Ultrasound-based Optimization and Fuzzy Logic: Peningkatan Efisiensi Sistem Sortasi Matang Buah Kopi melalui Optimasi Berbasis Ultrasound dan Logika Fuzzy. JISTECH. 2023;12(1):175-179. Accessed August 6, 2026. https://jistechunipa.com/index.php/istech/article/view/218