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All Journal Pixel : Jurnal Ilmiah Komputer Grafis TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Sinergi Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Informatika Mulawarman: Jurnal Ilmiah Ilmu Komputer Jurnal Teknik Komputer AMIK BSI InComTech: Jurnal Telekomunikasi dan Komputer Prosiding Seminar Nasional Teknoka JITK (Jurnal Ilmu Pengetahuan dan Komputer) Creative Research Journal Jurnal ICT : Information Communication & Technology Indonesian Journal of Electrical Engineering and Computer Science JTIULM (Jurnal Teknologi Informasi Universitas Lambung Mangkurat) International Journal of Science, Engineering and Information Technology Indonesian Journal of Engineering Research Journal of Computer Science and Informatics Engineering Digital Transformation Technology (Digitech)
Rahmad Hidayat
Departement Of Electrical Engineering, Sekolah Tinggi Teknologi Mandala, 40286, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering Other

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Automatic Liquid Filling Machine using Flow Sensor and Arduino Pro Mini Rahmad Hidayat; Handayani Saptaji Winahyu
Indonesian Journal of Engineering Research Vol 1 No 1 (2020): Indonesian Journal of Engineering Research
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/ijer.01.01.05

Abstract

The Small Industries Enterprise (SME), which is especially involved in the liquid filling industry (such as mineral water, tea, liquid milk, juice, etc.), needs some device that has the ability to measure liquid automatically and accurately into some container. Based on the 'Water Fall' method, this study carries out a procedure for making compact and efficient tools ('requirements definition' stage), using a keypad start button, flow sensor, temperature sensor, fan, buzzer, LCD 1602, relay driver ('system & software design' stage), implement a schematic drawing of the circuit and install all hardware inside the casing ('implementation and unit testing' stage), install accessories, set parameters and volume target ('integration and system testing ' stage) and re-calibrate the device ('operation and maintenance' stage). After the measurement experiment, we got that Fillco (the name of the device) has a bigger error for measurement below 1000 ml (0.6-15%) and better accuracy measurement for targeted volume upper than 1000 ml (0.04-0.20%). Fillco also able to memorize and reset liquid volume.
Adaptive filter and pulse-shaping for interference cancellation of differential quadrature phase-shift keying modulation Rahmad Hidayat; Farhan Adani
Indonesian Journal of Engineering Research Vol 2 No 1 (2021): Indonesian Journal of Engineering Research
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/ijer.02.01.02

Abstract

Differential quadrature phase-shift keying (DQPSK) modulation methods and variations are commonly used in wireless communication, including high-speed optical fiber, Bluetooth, and satellite communication. DQPSK cannot be isolated from possible interference with its present application. The interference cancellation process has been observed and analyzed using a device model built in this study. The core components of the supporting block for this device model have raised cosine filters for pulse shaping and adaptive filters. The presence of these core components has resulted in a dramatic improvement in device efficiency, according to robust Simulink data. The best bit error rate (BER) of 5.7e-03 provides evidence of this.
An approach of adaptive notch filtering design for electrocardiogram noise cancellation Rahmad Hidayat; Ninik Sri Lestari; Herawati Herawati; Givy Devira Ramady; Sudarmanto Sudarmanto; Farhan Adani
Indonesian Journal of Electrical Engineering and Computer Science Vol 22, No 3: June 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v22.i3.pp1303-1311

Abstract

An electrocardiogram (ECG) is a means of measuring and monitoring important signals from heart activity. One of the major biomedical signal issues such as ECG is the issue of separating the desired signal from noise or interference. Different kinds of digital filters are used to distinguish the signal components from the unwanted frequency range to the ECG signal. To address the question of noise to the ECG signal, in this paper the digital notch filter IIR 47 Hz is designed and simulated to demonstrate the elimination of 47 Hz noise to obtain an accurate ECG signal. The full architecture of the structure and coefficient of the IIR notch filter was carried out using the FDA Tool. Then the model is finished with the help of Simulink and the MATLAB script was to filter out the 47 Hz noise from the signal of ECG. For this purpose, the normalized least mean square (NLMS) algorithm was used. The results indicate that before being filtered and after being filtered it clearly shows the elimination of 47 Hz noise in the signal of the ECG. These results also show the accuracy of the design technique and provide an easy model to filter out noise in the ECG signal.
PERANCANGAN MODEL SIMULASI SISTEM PENDETEKSI KEBOCORAN GAS DAN KEBAKARAN SEBAGAI MEDIA PEMBELAJARAN BERBASIS INTERNET OF THINGS (IOT) Rahmad Hidayat; Yudi Herdiana
Jurnal Teknologi Informasi Universitas Lambung Mangkurat (JTIULM) Vol. 5 No. 2 (2020)
Publisher : Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtiulm.v5i2.58

Abstract

Era revolusi industri 4.0 telah menghadirkan banyak percepatan terhadap perkembangan teknologi sehingga menjadi lebih mudah, cepat, dan praktis. Salah satu penerapan teknologi tersebut salah satunya dibidang pendidikan, berupa perancangan model simulasi alat pendeteksi kebocoran gas dan kebakaran sebagai media pendukung pembelajaran menggunakan modul mikrokontroler serta mengintegrasikannya ke dalam saluran komunikasi data internet agar siswa dapat melakukan pengujian dan pemantauan secara real time melalui perangkat mobile. Perancangan model simulasi ini menggunakan modul ESP8266, sensor DHT-11, dan sensor MQ-135. Untuk layanan cloud computing menggunakan database serta aplikasi Thingspeak. Metode yang digunakan pada perancangan ini berupa metode eksperimental. Metode ini banyak digunakan dalam perancangan sebuah sistem karena dapat menguji secara benar hipotesis yang menyangkut hubungan kasual. Berdasarkan hasil pengujian, sistem yang dibangun dapat berfungsi secara baik serta memberikan informasi mengenai nilai kondisi yang sedang diujikan. Siswa dapat memantau kondisi pengujian secara real time melalui aplikasi Thingspeak yang dipasangkan pada perangkat mobile.
Analisis firewall sebagai bandwidth limiter dan network security menggunakan pfsense Agung Wirjawan; Hilman Iskandar; Rahmad Hidayat; Dwiyanto Dwiyanto; Ike Yuni Wulandari; Yudi Herdiana
Pixel :Jurnal Ilmiah Komputer Grafis Vol 16 No 1 (2023): Vol 16 No 1 (2023): Jurnal Ilmiah Komputer Grafis
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/pixel.v16i1.1003

Abstract

Internet connections that are not always stable and data security is not maintained from various threats from outside attacks in the form of hackers, crackers, viruses, and so on are the main problems for every client. Using the pfSense analysis method, this study aims to address the above bandwidth management and network security issues. The pfSense analysis that the researchers carried out included an analysis of total bandwidth usage, data security, and information for each client on the P3DW Internet network (Center for Regional Revenue Management) Bandung III Soekarno-Hatta City. The results of the analysis concluded that pfSense can work as a firewall that functions as a bandwidth limiter and network security. The level of client satisfaction increases with the infrastructure designs being tested. With a web GUI that makes it easy for users to configure, the basic system used is FreeBSD which is open-source, making pfSense able to be an alternative choice for building a firewall that is reliable, flexible, and economical.
DEVELOPMENT OF A SMART PARKING SYSTEM USING AUTOMATIC DEBIT AND OPTICAL CHARACTER RECOGNITION Ninik Sri lestari; Rahmad Hidayat; Herlina Herlina; Sukirno Sukirno
JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer) Vol. 11 No. 2 (2025): JITK Issue November 2025
Publisher : LPPM Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/jitk.v11i2.6694

Abstract

The current parking infrastructure predominantly relies on traditional or semi-automatic mechanisms, leading to significant inefficiencies during peak hours. This study proposes the development of a fully automated smart parking system utilizing locally sourced Indonesian components to reduce dependence on imported parts. The proposed Auto-Debit Smart Parking System incorporates Optical Character Recognition (OCR) for vehicle identification and automated payment, improving both accuracy and operational efficiency. The system consists of two primary modules: server software for gate control and an image-processing host application. Space Vector Pulse Width Modulation (SVPWM) is employed for switching control, and communication is facilitated via wired or wireless channels using the RS232C standard. Vehicle entry and exit are detected by sensors that transmit signals to the Command TX module. To evaluate real world applicability, the system was implemented and tested in various public and commercial environments, including office buildings, shopping malls, and open parking areas.These testing sites represent common urban parking conditions with varying lighting, network connectivity, and traffic density, allowing the system’s adaptability and reliability to be analyzed comprehensively. An experimental research method is adopted, encompassing prototype development, testing, data acquisition, and performance evaluation. The results indicate reduced operational costs and enhanced user convenience, validating the system’s effectiveness in supporting modern, efficient parking management
Particle Swarm Optimization for Interference Mitigation of Wireless Body Area Network: A Systematic Review Rahmad Hidayat; Ninik Sri Lestari; Ahmad Sujana; Andrew Ghea Mahardika; Herawati YS; Givy Devira Ramady
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 9 No. 4 (2023): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v9i4.27171

Abstract

Wireless body area networks (WBAN) has now become an important technology in supporting services in the health sector and several other fields. Various surveys and research have been carried out massively on the use of swarm intelligent (SI) algorithms in various fields in the last ten years, but the use of SI in wireless body area networks (WBAN) in the last five years has not seen any significant progress. The aim of this research is to clarify and convince as well as to propose a answer to this problem, we have identified opportunities and topic trends using the particle swarm optimization (PSO) procedure as one of the swarm intelligence for optimizing wireless body area network interference mitigation performance. In this research, we analyzes primary studies collected using predefined exploration strings on online databases with the help of Publish or Perish and by the preferred reporting items for systematic reviews and meta-analysis (PRISMA) way. Articles were carefully selected for further analysis. It was found that very few researchers included optimization methods for swarm intelligence, especially PSO, in mitigating wireless body area network interference, whether for intra, inter, or cross-WBAN interference. This paper contributes to identifying the gap in using PSO for WBAN interference and also offers opportunities for using PSO both standalone and hybrid with other methods to further research on mitigating WBAN interference.
Igniting transistor to control three-phase alternating current motor servo Syafruddin Rustam; Andrew Ghea Mahardika; Givy Devira Ramady; Arif Rakhman; Rahmad Hidayat; Muchamad Sobri Sungkar
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 22, No 3: June 2024
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v22i3.25458

Abstract

The background of research try to use an open loop system, without feedback, by building torque in the target position. Theoretical basis manages the turning round of servo motor change direct currents to alternating currents by adjusting the rate input used. Methodology in simple terms, the flowchart of code processing from igniting transistors to managing the turning round of a three-phase alternating current (AC) servo motor. The result of the transistor ignition time with room phasor pulse width modulation (PWM) to set the ignition of a three-phase AC servo motor in the process of igniting as ordered, for manage position only igniting transistors in target position, and building torque at there. Discussion, igniting transistors to manage the turning round of servo motors, allows motion of servo motor, allows motion of servo motor to be added faster, accurately, soft, and steady. In conclusion, in this case the researcher uses it more specifically by turning on the transistor only at the target position, so that the torque generated is only at the target position, the servo motor motion from the start position immediately ends at the target position. Suggestions, this system igniting can be applied at a motion high-velocity system like a missile system controlled.
RFID-Based Door Security System Performance Optimization Using Particle Swarm Optimization on the ESP32 Platform Hamdani Setiawan; Rahmad Hidayat; Paris Hasbi; Ike Yuni Wulandari; Yudi Herdiana
Journal of Computer Science and Informatics Engineering Vol 5 No 3 (2026): July
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/cosie.v5i3.1758

Abstract

The development of the Internet of Things (IoT) has accelerated the adoption of RFID- and ESP32-based door security systems as more secure and flexible alternatives to conventional locks. However, previous studies have primarily focused on system implementation and functional testing without systematically optimizing RFID operational parameters, resulting in suboptimal reading performance and response time. This study aims to optimize the performance of an RFID-based door security system using the Particle Swarm Optimization (PSO) algorithm on the ESP32 platform. The proposed method includes prototype development, experimental evaluation under varying RFID reading distances and angles, and PSO-based optimization using a fitness function that integrates reading success rate, effective reading distance, and response time. The novelty of this study is integrating PSO to simultaneously optimize ESP32-based RFID parameters for improved authentication performance. Experimental results show that PSO increased the fitness value from 0.636 to 0.923, improved the RFID reading success rate from 60% to 95%, extended the effective reading distance from 4.2 cm to 4.8 cm, and reduced the response time from 0.59 s to 0.43 s. These findings demonstrate that PSO effectively improves the reliability, speed, and service quality of RFID-based access control systems in IoT environments
Optimasi Pole Rekursif Infinite Impulse Response Menggunakan Grey Wolf Optimizer untuk Meningkatkan Kualitas Resonator Hamdani Setiawan; Rahmad Hidayat; Givy Devira Ramady; Anung Anung; Yoddy Agung Nuhgraha
Digital Transformation Technology Vol. 6 No. 1 (2026): Periode Maret 2026
Publisher : Information Technology and Science(ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/digitech.v6i1.8937

Abstract

Resonator digital berbasis Infinite Impulse Response (IIR) merupakan salah satu struktur yang banyak digunakan sebagai pembangkit gelombang sinusoidal karena memiliki kompleksitas komputasi yang rendah dan selektivitas frekuensi yang tinggi. Namun, metode desain konvensional umumnya menggunakan koefisien tetap yang diperoleh secara analitis sehingga belum menjamin performa optimum terhadap parameter bandwidth dan faktor kualitas (Q-factor). Penelitian ini mengusulkan metode optimasi penempatan pole pada resonator rekursif IIR orde dua menggunakan algoritma Grey Wolf Optimizer (GWO). Setiap solusi direpresentasikan sebagai posisi pole yang menentukan karakteristik resonator. Fungsi objektif dirancang secara multi-kriteria dengan mempertimbangkan kesalahan frekuensi resonansi, bandwidth, faktor kualitas, dan kestabilan sistem. Simulasi dilakukan pada frekuensi sampling 12 kHz dengan target frekuensi resonansi 2 kHz dan 4 kHz. Hasil optimasi menunjukkan bahwa metode GWO mampu menghasilkan bandwidth yang lebih sempit, faktor kualitas yang lebih tinggi, serta kesalahan frekuensi yang lebih kecil dibandingkan metode desain resonator konvensional. Hasil penelitian menunjukkan bahwa GWO efektif digunakan untuk meningkatkan performa resonator digital pada aplikasi pembangkit gelombang dan pemrosesan sinyal adaptif
Co-Authors Agung Wirjawan Ahmad Sujana Andrew Ghea Mahardika Anjeng Sun Sun Anung Anung Arif Rakhman Dimas Surya Subrata Dwiyanto - Farhan Adani Farhan Adani Givy Devira Ramady Hamdani Setiawan Handayani Saptaji Winahyu Herawati YS Herawati Yusuf Herlina Herlina Hilman Iskandar Ike Yuni Wulandari Ike Yuni Wulandari Mohamad Yusuf Muchamad Sobri Sungkar Ninik Sri Lestari Paris Hasbi Reza Rahman Hakim Rushendra, Rushendra Sudarmanto Sudarmanto Sukirno Sukirno Syafruddin R Syafruddin Rustam Yakob Liklikwatil Yoddy Agung Nuhgraha Yudi Herdiana Yudi Herdiana