A Web-Based Ultrasonic Sensor-Based Water Level Measurement System in the Water Reservoir at Diponegoro Vocational School (Case Study at Diponegoro Vocational School)

Abstract

Pengelolaan air yang efisien merupakan aspek penting dalam mendukung kegiatan operasional di SMK Diponegoro. Tandon air yang selama ini dikelola secara manual sering menimbulkan kendala, seperti tandon meluap atau kosong akibat keterlambatan pengisian. Hal ini menyebabkan pemborosan air dan listrik serta meningkatkan beban kerja staf pengelola. Untuk mengatasi permasalahan tersebut, penelitian ini merancang sistem pendeteksi ketinggian air otomatis berbasis sensor ultrasonik dan Programmable Logic Controller (PLC). Sistem ini menggunakan sensor water level control untuk mendeteksi batas bawah dan atas ketinggian air, yang kemudian diolah oleh PLC untuk mengontrol pompa secara otomatis. Selain itu, data ketinggian air dikirim ke database dan ditampilkan pada web secara real-time. Metode logika fuzzy Tsukamoto digunakan dalam sistem kontrol untuk mengakomodasi ketidakpastian pembacaan sensor, dengan aturan berbasis bahasa alami seperti “air rendah”, “air sedang”, dan “air tinggi”. Hasil implementasi sistem ini diharapkan dapat meningkatkan efisiensi penggunaan air, mengurangi pemborosan, dan meringankan beban pengelola di lingkungan SMK Diponegoro.Efficient water management is a crucial aspect in supporting operational activities at Diponegoro Vocational High School. Manually managed water reservoirs often present problems, such as overflowing or empty reservoirs due to late filling. This wastes water and electricity and increases the workload of management staff. To address these issues, this study designed an automatic water level detection system based on ultrasonic sensors and a Programmable Logic Controller (PLC). This system utilizes water level control sensors to detect the lower and upper limits of the water level, which the PLC then processes to control the pump automatically. In addition, water level data is sent to a database and displayed on the web in real-time. The Tsukamoto fuzzy logic method is employed in the control system to accommodate the uncertainty of sensor readings, utilizing natural language-based control to automatically regulate the pump according to rules such as "low water", "medium water", and "high water". The implementation of this system is expected to enhance water use efficiency, minimize waste, and alleviate the burden on managers at Diponegoro Vocational High School.