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Rancang Bangun Alat Pengukur Jarak Tempuh Lari Laun Menggunakan Sensor Inertial Measurement Unit (IMU) Berbasis Mikrokontroler Yunidar Yunidar; Yazid Yaskur; Roslidar Roslidar; Mohd. Syaryadhi
Jurnal Rekayasa Elektrika Vol 18, No 1 (2022)
Publisher : Universitas Syiah Kuala

Jogging is a form of trotting or running at a slow or leisurely pace. So far, the measurement of running distance is determined by wearables Global Positioning System (GPS) and pedometers. The use of wearables with GPS commonly used by joggers cannot be used in indoor conditions. In addition, the use of a pedometer for measuring the number of steps cannot calculate the specific distance due to the inconsistency of human footsteps. This study aims to design a device to measure the distance traveled in jogging. To measure the distance traveled in a run, an Inertial Measurement Unit (IMU) sensor can be used with a linear acceleration output then reduce the measurement noise by using a Kalman Filter. The acceleration signal is processed into a velocity signal and the velocity signal is processed into a distance signal through integration. From the results of the prototype design, it is able to measure a distance of 25m with an error of 0.78%, a distance of 50m with 0.53% and a distance of 75m with 0.22%.

Penggunaan Accelerometer MMA7361 sebagai Alternatif Pengukuran Lendutan pada Jembatan Secara Nirkabel Berbasis ATmega32 Mohd Syaryadhi; Purwandy Hasibuan; Suhardi Suhardi
Jurnal Rekayasa Elektrika Vol 11, No 5 (2015)
Publisher : Universitas Syiah Kuala

A bridge is planned and built with a certain capability against vehicles through it. The vehicles movement causes vibration and vertical deflection on certain parts of the bridge. If the vibration occurs continuously in a great value, then the bridge will be damaged sooner than had been planned. This research reports a design of a vertical deflection measuring system prototype on bridge, employing an accelerometer MMA7361 sensor which is controlledby ATmega32. The system was tested by manually loading the trial bridge with 1 m of length. The loading deflects down the bridge to maximum 15 cm from the reference point. Sensor readout data was sent wirelessly using ZigBee real time to computer in a graphical display for easy analysis. The research give an alternative method in vertical deflection measuring on the bridge that can be utilized by stakeholder in policy decision.

Robot Pointer sebagai Penunjuk Jalan Tim SAR untuk Mempermudah Pencarian Korban Bencana Gempa Syadza Sausan; Bima Sakti; Hendrik Leo; Achmi Yuliani; Intan Permatasari; Aulia Rahman; Mohd Syaryadhi
Jurnal Rekayasa Elektrika Vol 13, No 2 (2017)
Publisher : Universitas Syiah Kuala

An earthquake is a natural disaster caused by the movement of the earth plates or from below the Earth surface. The impact of the earthquake could lead casualties and other losses whether material or immaterial. The evacuation process of the victims must immediately proceed. The SAR (Search and Rescue) team has a duty to rescue victims who trapped in the rubble of the building. But information about the position of the victims could not be known precisely, and the environment around the location of the disaster is still very dangerous that might endanger the safety of SAR Team. In this research, a robot path pointer was designed to help SAR team in locating the victims. The method used in this research is the robot wirelessly controlled by SAR team at SAR team’s post with remote control. The robot searches in the rubble of the building and sends the victim’s location information to SAR team. This robot pointer research aims to find safe routes for SAR team of the victim’s location to reduce the risks that may harm the SAR team. The robot will give the main results of the pointer in the form of location coordinates and routes of the victim so that the SAR team only have to follow the route. Robot pointer guides the SAR team to the location of the earthquake in a short and less risky path for victim evacuation.

Penggunaan Accelerometer MMA7361 sebagai Alternatif Pengukuran Lendutan pada Jembatan Secara Nirkabel Berbasis ATmega32 Mohd Syaryadhi; Purwandy Hasibuan; Suhardi Suhardi
Jurnal Rekayasa Elektrika Vol 11, No 5 (2015)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v11i5.3215

A bridge is planned and built with a certain capability against vehicles through it. The vehicles movement causes vibration and vertical deflection on certain parts of the bridge. If the vibration occurs continuously in a great value, then the bridge will be damaged sooner than had been planned. This research reports a design of a vertical deflection measuring system prototype on bridge, employing an accelerometer MMA7361 sensor which is controlledby ATmega32. The system was tested by manually loading the trial bridge with 1 m of length. The loading deflects down the bridge to maximum 15 cm from the reference point. Sensor readout data was sent wirelessly using ZigBee real time to computer in a graphical display for easy analysis. The research give an alternative method in vertical deflection measuring on the bridge that can be utilized by stakeholder in policy decision.

Robot Pointer sebagai Penunjuk Jalan Tim SAR untuk Mempermudah Pencarian Korban Bencana Gempa Syadza Sausan; Bima Sakti; Hendrik Leo; Achmi Yuliani; Intan Permatasari; Aulia Rahman; Mohd Syaryadhi
Jurnal Rekayasa Elektrika Vol 13, No 2 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v13i2.7761

An earthquake is a natural disaster caused by the movement of the earth plates or from below the Earth surface. The impact of the earthquake could lead casualties and other losses whether material or immaterial. The evacuation process of the victims must immediately proceed. The SAR (Search and Rescue) team has a duty to rescue victims who trapped in the rubble of the building. But information about the position of the victims could not be known precisely, and the environment around the location of the disaster is still very dangerous that might endanger the safety of SAR Team. In this research, a robot path pointer was designed to help SAR team in locating the victims. The method used in this research is the robot wirelessly controlled by SAR team at SAR team’s post with remote control. The robot searches in the rubble of the building and sends the victim’s location information to SAR team. This robot pointer research aims to find safe routes for SAR team of the victim’s location to reduce the risks that may harm the SAR team. The robot will give the main results of the pointer in the form of location coordinates and routes of the victim so that the SAR team only have to follow the route. Robot pointer guides the SAR team to the location of the earthquake in a short and less risky path for victim evacuation.

Rancang Bangun Alat Pengukur Jarak Tempuh Lari Laun Menggunakan Sensor Inertial Measurement Unit (IMU) Berbasis Mikrokontroler Yunidar Yunidar; Yazid Yaskur; Roslidar Roslidar; Mohd. Syaryadhi
Jurnal Rekayasa Elektrika Vol 18, No 1 (2022)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v18i1.22973

Jogging is a form of trotting or running at a slow or leisurely pace. So far, the measurement of running distance is determined by wearables Global Positioning System (GPS) and pedometers. The use of wearables with GPS commonly used by joggers cannot be used in indoor conditions. In addition, the use of a pedometer for measuring the number of steps cannot calculate the specific distance due to the inconsistency of human footsteps. This study aims to design a device to measure the distance traveled in jogging. To measure the distance traveled in a run, an Inertial Measurement Unit (IMU) sensor can be used with a linear acceleration output then reduce the measurement noise by using a Kalman Filter. The acceleration signal is processed into a velocity signal and the velocity signal is processed into a distance signal through integration. From the results of the prototype design, it is able to measure a distance of 25m with an error of 0.78%, a distance of 50m with 0.53% and a distance of 75m with 0.22%.

Real-Time PPE Detection for Utility Field Workers Using YOLOv11 on Raspberry Pi with Automated Safety Reporting Israk Faradila; Roslidar Roslidar; Fathurrahman Fathurrahman; Yudha Nurdin; Mohd Syaryadhi
Jurnal Komputer Informasi Teknologi dan Elektro Vol. 11 No. 1 (2026): April
Publisher : Departemen Teknik Elektro dan Komputer Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/kitektro.v11i1.1506

The level of compliance with the use of Personal Protective Equipment (PPE) in the work environment, especially in the field, remains a serious challenge with a direct impact on worker safety. Manual supervision is considered ineffective because it is subjective and limited in scope, time, and space. This research aims to develop an automatic PPE detection system using deep learning that can recognize five main objects: helmets, vests, gloves, shoes, and people. The system was designed to automatically detect real-time PPE availability and record workers' occupational safety status in the field. This research used the Convolutional Neural Network (CNN) with the YOLOv11 nano variant architecture, due to its advantages in efficiency and inference speed. The dataset comprised 1,471 images collected from PT PLN Aceh field documentation and the Roboflow Universe platform, which were expanded to 7,310 images following data augmentation. The dataset was split into training (96%), validation (2%), and testing (2%) subsets. The model was trained for 150 epochs and deployed on a Raspberry Pi 4 B for real-time inference. Evaluation results show a mean Average Precision at IoU 0.5 (mAP@0.5) of 90%, precision of 91.8%, and recall of 82%. The deployed system operates at 5–8 frames per second (FPS) and automatically logs worker safety status to Excel reports, demonstrating its practicality for real-time occupational safety monitoring.

Sistem Pemantauan Kualitas Air Sungai Secara Real Time Berbasis Internet of Things Fadlurrahman Al Hafizh Redi; Roslidar Roslidar; Mohd Syaryadhi; Alfatirta Mufti; Alfisyahrin Alfisyahrin; Zulhelmi Zulhelmi
Jurnal Komputer Informasi Teknologi dan Elektro Vol. 11 No. 1 (2026): April
Publisher : Departemen Teknik Elektro dan Komputer Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/kitektro.v11i1.1653

Pencemaran air sungai akibat aktivitas manusia berdampak negatif terhadap lingkungan dan kesehatan masyarakat. Pemantauan kualitas air secara manual dinilai kurang efektif karena tidak mampu menyediakan data secara cepat dan berkelanjutan. Penelitian ini bertujuan untuk merancang sistem pemantauan kualitas air sungai secara real-time berbasis Internet of Things (IoT). Sistem ini dikembangkan menggunakan NodeMCU ESP8266 yang terintegrasi dengan sensor pH, dissolved oxygen (DO), kekeruhan, suhu, dan debit aliran. Data sensor diambil setiap 30 menit dan ditampilkan melalui aplikasi seluler. Hasil pengujian menunjukkan bahwa sistem mampu melakukan pemantauan secara otomatis serta mengklasifikasikan kondisi air menjadi tiga kategori: clean (bersih), polluted (tercemar), dan offline. Selain itu, sistem ini dilengkapi dengan alarm sebagai mekanisme peringatan dini. Dengan demikian, sistem yang dikembangkan dapat mendukung upaya pemantauan kualitas air secara efektif dan berkelanjutan.

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