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All Journal Indonesian Journal of Electrical Engineering and Computer Science Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI)
Wahyu Nugroho, Dwi Oktavianto
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Control & Systems Engineering Electrical & Electronics Engineering Mechanical Engineering

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Developing Bluetooth phonocardiogram for detecting heart murmurs using hybrid MFCC and LSTM Wahyu Nugroho, Dwi Oktavianto; Hikmah, Nada Fitrieyatul; A’alimah, Fathin Hanum; Oktavia, Nabila Shafa; Dwi Winarsih, Meitha Auliana; Elparani, Sirsta Hayatu; Rifqi Hananto, R. M. Tejo
Indonesian Journal of Electrical Engineering and Computer Science Vol 35, No 2: August 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v35.i2.pp878-887

Abstract

Cardiovascular disease is a leading global cause of mortality. Most stethoscopes still necessitate the use of tubing, which entails direct physical contact between the healthcare provider and patient. The stethoscope can serve as a means of transmission if it is utilized on individuals who have been diagnosed with airborne and droplet-borne infectious illnesses. A prototype was created to capture heart sounds using a Phonocardiography (PCG) device over website-based Bluetooth connectivity. This approach offers the benefits of being cost-effective, facilitating computer-aided diagnostics, and being wearable. In addition, the primary significance of this study resides in the identification of heart sound irregularities caused by cardio dynamic abnormalities of the heart valves, known as murmurs. The heart sound categorization process utilizes a machine learning model that involves extracting 25 Mel frequency cepstral coefficients (MFCC) as features. The model employs a hybrid approach combining convolutional neural network and long short-term memory (CNN-LSTM) techniques. The research findings indicate that the suggested model achieves an average accuracy rate of 95.9% over five distinct categories, i.e., normal, atrial stenosis, mitral regurgitation, mitral stenosis, and mitral valves prolapse. Further study can be conducted on hardware development by incorporating an infrared sensor at the fingertip of the stethoscope.
Design and performance testing of a safety instrumented system for water level control simulator using plc with cause-effect matrix implementation Mujiyanti, Safira Firdaus; Ahmadi, Fadhil; Patrialova, Sefi Novendra; Adziimaa, Ahmad Fauzan; Wahyu Nugroho, Dwi Oktavianto; Nanta, Tepy Lindia
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol. 4 No. 1 (2025): July
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

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Safety Instrumented Systems (SIS) are widely employed in industrial settings to ensure operational safety and prevent system failures that could pose risks to the environment, personnel, and assets. This research presents the design of an SIS for a water level control system, utilizing Programmable Logic Control (PLC) to enhance safety and mitigate the risk of leakage or flooding. The SIS design is developed based on the Layers of Protection Analysis (LOPA) methodology, incorporating multiple protective layers, including water level measurement instruments, controllers, and final control elements to manage risk effectively. Following the LOPA-based design process, system testing was conducted using a cause-and-effect matrix to evaluate performance under various operational scenarios. The findings indicate that implementing SIS in water level control systems significantly enhances operational safety. In simulated test conditions, the SIS effectively detected potentially hazardous situations, such as excessive water levels that could lead to overflow or dangerously low levels that might disrupt process continuity. The system then executed appropriate mitigation measures, such as alerting operators or automatically shutting off water flow, to prevent accidents and equipment damage. The results demonstrate that integrating an SIS into water level control systems provides substantial benefits in managing operational risk, ensuring system reliability, and safeguarding industrial processes.
The external controller solutions (ECS) based on programmable logic controller with humanmachine interface: A case study for the water level simulator plant Patrialova, Sefi Novendra; Winata, Waga; Mujiyanti, Safira Firdaus; Adziima, Ahmad Fauzan; Wahyu Nugroho, Dwi Oktavianto
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol. 3 No. 2 (2024): December
Publisher : Faculty of Vocational Studies - Research Center, DRPM ITS

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Abstract

The External Controller Solutions (ECS) is designed with the flexibility and able to be integrated with various plants. The ECS has been built using PLC and HMI. Several tests have been carried out in developing this ECS, including testing Digital Input/Output (DI/DO) and Analog Input/Output (AI/AO) voltages. This ECS be able to control up-to 8 devices simultaneously with the data refresh time interval of 100 ms and be able to handle up-to 10,000 operating cycles within 24 hours without significant performance degradation. ECS performance is very good, proven by the results showing that the system runs well within 20-35 °C of temperatures range and 20%-80% of humidity. To show the advantage of ECS, it has already been integrated on the Water Level Simulator (WLS) plant and successfully controlled the flow through the VSD at 54 RPM/Hz in range of 15-30 Hz.
Co-Authors Adziima, Ahmad Fauzan Ahmad Fauzan Adziimaa Ahmadi, Fadhil A’alimah, Fathin Hanum Dwi Winarsih, Meitha Auliana Elparani, Sirsta Hayatu Hikmah, Nada Fitrieyatul Mujiyanti, Safira Firdaus Nanta, Tepy Lindia Oktavia, Nabila Shafa Patrialova, Sefi Novendra Rifqi Hananto, R. M. Tejo Winata, Waga