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Jurnal Instrumentasi dan Teknologi Informasi (JITI)
Published by Politeknik Gajah Tunggal
ISSN : 27467635     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Energy Engineering
Topik-topik meliputi bidang-bidang (namun tidak terbatas pada): Topics of interest include (but not limited to) : Teknologi Informasi (Information Technology) : Rekayasa Perangkat Lunak (Software Engineering) Pengetahuandan Data Mining (Data Mining) Teknologi Multimedia (Multimedia Tecchnologies) Mobile Computing Parallel / Distributed Computing Kecerdasan Buatan (Artificial Intelligent) Grafika Komputer (Coumputer Graphics) Virtual Reality Power Systems : Pembangkit (Generator) Distribusi Daya (Power Distribution) Konversi Daya (Electrical Power Convertion) Sistem Proteksi (Protection Systems) Bahan Tenaga Listrik (Electrical Material) Isyarat, Sistem dan Elektronika (Signal, System and Electronics) Pengolahan Isyarat Digital (Digital Signal Processing) Sistem Robotika (Robotic Systems) Pengolahan Citra (Image Processing) Instrumentasi Biomedis (Biomedical Instrumentation) Mikro elektronika (Micro Electronics) Embedded Systems
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 13 Documents
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Search results for , issue "Vol. 7 No. 1 (2025): November" : 13 Documents clear
Modifikasi Sistem Counter Length Tread Pada Mesin Building PT ASD Surhayati; Susilo Wardoyo, Adik; Samudra Hidayah, Ihsan; Zacky, Muhammad Farid
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The positioning system for the photocell on the PT ASD tire building machine's tread counter length is still manually operated and relies on the operator's intuition. The operator needs several attempts to adjust the photocell's position to produce tread cuts that meet specifications. These repeated trials result in an average of about 75% NG (Not Good or failed) tread from the total number of trials conducted in one tread length adjustment process. In this paper, the author modifies the tread counter length system to change the manual system into an automatic one that can accurately determine the photocell position to achieve the desired tread cut length. The control system created consists of a PLC as the main controller, an encoder as the position reader, and an inverter and electric motor as the photocell movers. Based on testing results after the modification, a photocell positioning accuracy of 99.5% was achieved, and the occurrence of NG tread during adjustment decreased by 60.72%.
Analisis Perbedaan Pembacaan Kalibrator Temperatur dengan Drywell Menggunakan Uji Wilcoxon Choirunnisa, Anis; Kuswantori, Ari; Rizki Nurhasan, Muhamad; Putra, Hagi Sugara
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The oven calibration process is a crucial step in ensuring the accuracy of temperature testing on tire components. At the PT XYZ DKM Plant, oven calibration is still performed externally due to the lack of a nine-point temperature calibrator compliant with AS 2853. This impacts calibration time and costs. Therefore, this study aims to design and analyze the performance of a nine-point temperature calibrator compared to the AIS-TCL-3 master temperature calibrator. The test was conducted at a temperature range of 30°C to 150°C with a minimum of 30 data points per point. The results were then analyzed using normality tests, Wilcoxon test, and Cohen's d test. The Wilcoxon test results showed no statistically significant differences between the designed instrument and the master instrument. Furthermore, all measurement values were within the ±1°C tolerance limit as per ASTM D1509-15 standard. This is supported by the Cohen's d value, which indicates a low to moderate difference in effect. Thus, the designed calibrator tool is declared suitable for use in internal calibration processes and can be an economical solution for the company.
Rancang Bangun Digitalisasi Formulir Perintah Kerja Berbasis Website dan Aplikasi Android dengan Metode Unified Modelling Language (UML) Choirunnisa, Anis; Ardhianti Purna Murti, Zefanya; Fajrian, Rifki Alwi
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

This study aims to design and build a website-based FPK digitalization system and android application in the Engineering Section. This system is designed as a solution to overcome the constraints of the manual system that has been used so far, such as process delays, risk of data loss, and cost and time inefficiencies. The methodology used in this study is the Agile method for software development and the Unified Modeling Language (UML) for system design, including Use Case Diagrams, Activity Diagrams, Sequence Diagrams, and Class Diagrams to describe the structure, workflow, and interactions between users comprehensively. Data collection was carried out through direct observation, literature studies, and historical data analysis such as the number of FPK usage and manual input time. The result of this study is an FPK digitalization system that involves four main actors, namely Admin, Section Head, Engineer, and Tenant. This system has main features that include Complain Form, Work Order, Approval, and Satisfaction Survey. Each user has different access and functions according to their respective roles. The conclusion of this study shows that the FPK digitalization system is able to increase work efficiency, reduce human error, reduce operational costs, and provide digital archives that are safer and easier to access.
PERANCANGAN SISTEM INFORMASI STOCK COMPOUND BERBASIS WEBSITE DENGAN PENDEKATAN UNIFIED MODELLING LANGUAGE Susilawati, Dera; Zohari, Ahmad; Ali Darmawan, Ferdy; Wahyu Sudrajat, Danar
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

PT RCI faces challenges in managing FIFO stock compound information in the mixing department, the system currently used is still manual with a coin board as a tool for recording and visualizing data. This condition makes it difficult to monitor stock in real time, increases the risk of compound taking errors, and takes a long time to update data every day. To overcome this problem, this study designs a website-based stock information system using UML (Unified Modeling Language) as a visual modeling language to make it easier for users to understand and interact with the system. UML design is carried out as an initial step before website development begins. This system is designed to make the process more efficient and structured. The UML used includes 4 types of diagrams, namely Use Case Diagram, Activity Diagram, Sequence Diagram, and Class Diagram. The design of a website- based stock information system was successfully built using UML, which involved 2 actors, namely: Operator and Staff.
Rancang Bangun Kontrol Otomatis Penyemprotan Chemical Menggunakan Motorized Valve Pada Discharge Conveyor Susilawati, Dera; Ibnu Rusydi, Muhammad; Prasetyo, Henry; Waqis Tianto, Akbar; Caesar Fistiansyah, Najwan
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The coal transportation system using conveyor belts at PT AFY generates airborne coal dust, particularly in the discharge conveyor area, which poses a risk of environmental pollution and endangers workers' health. To address this issue, an automatic chemical spraying control system was designed using motorized valves operated by signals from the discharge conveyor. The airborne dust generated during coal transport consists of PM2.5 and PM10 particulates. Based on measurements using an air quality detector in the discharge conveyor (DC) area, PM2.5 concentrations ranged from 78 to 243 μg/m³ and PM10 from 102 to 318 μg/m³, categorized as unhealthy to very unhealthy. The chemical spraying system uses motorized valves to control the opening and closing of chemical flow. This research aims to design and implement an automatic chemical spraying system to reduce coal dust in the discharge conveyor area. The system is designed with motorized valves controlled by discharge conveyor signals. The development process includes planning and designing the control system. Dust level measurements before the system was installed showed an average of 168.2 μg/m³ for PM2.5 and 332.3 μg/m³ for PM10 (very unhealthy category). After implementation, the dust levels decreased to 19.4 μg/m³ for PM2.5 and 53.5 μg/m³ for PM10 (moderate to good category), with a reduction efficiency of 88.46% for PM2.5and 83.90% for PM10.
Modifikasi Sistem Kontrol Motor Listrik Menggunakan Inverter dengan Distance Sensor Pada Alat Penggulung Side Gume. Susilawati, Dera; Dharmanto; Kahlil Firdausi, Muhammad; Aldisar Syarifudin, Ahmad
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The high level of scrap in the bias cutting process at PT. ADM, particularly caused by ineffective side gume rolling, has impacted production efficiency. This final project aims to overcome this issue by modifying the side gume roller system on the DBC-03 machine. The original pneumatic motor was replaced with a three-phase induction motor, controlled by a PLC system integrated with a distance sensor and inverter to automatically adjust motor speed based on the diameter of the rolled material. The modification process included designing, assembling, and implementing the control system, followed by field testing. The results show that the new system significantly improves the roller's pulling strength, increases the rolling capacity, and enhances ease of operation. The distance sensor accurately detects changes in material diameter, and the inverter ensures stable speed control. Overall, the modified system has proven effective in reducing scrap, supporting continuous production, and providing a reliable solution for the bias cutting process in the tire manufacturing industry.
Analisis Resistansi Aliran Listrik pada Antena Ban untuk Mengetahui Efektivitas Antena sebagai Komponen Utama Sistem Pentanahan Choirunnisa, Anis; Michael Siahaan, Paul; Putri Andini, Meilana
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The development of electric vehicles (EV) has driven the tire industry to meet new standards related to electrical resistance, in order to ensure the effective discharge of static electricity to the ground. PT AMS continues to face challenges in maintaining the electrical resistance of tires within a stable range and in accordance with OEM customer specifications, which set a maximum limit of 10⁶ Ohms. This study aims to identify blocking points of electrical flow within the tire structure and to evaluate the effectiveness of the antenna as an additional grounding path. Experimental testing was conducted on three types of whole tires with different configurations using a Super Megohm Meter and an EKTRON machine. Data analysis included data sufficiency tests, normality test, homogeneity test, Welch ANOVA test, Games-Howell post hoc test, Welch T-Test, and effect size calculation (Cohen’s d). The results showed that the antenna significantly reduced resistance, especially when directly connected to the tread. These findings can serve as a reference for developing more conductive tire designs that meet EV industry standards.
Modifikasi Penambahan Inverter Pada Mesin Slicing Menggunakan Sistem Penggerak Motor Listrik Arif Cahyono, M Ridwan; Andre; Christiano Doni, Benedictus
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

Quality control in cable manufacturing is important to guarantee product reliability. The use of semi-automated machines, such as electric motor-powered slicing machines, is essential in creating test specimens.Existing cutting machines have limitations, such as a fixed speed, which slows down the cutting process. This study improves the efficiency of the slicing machine by using an inverter to regulate the frequency and speed of the motor. The inverter with a frequency of 127-135 Hz reduced the cutting time from 28 seconds to 10.28-9.69 seconds.The 370 W motor produces 2.52 Nm of torque, which is converted to 75.6 Nm at the output of the gearbox with a ratio of 1:30. With a gearbox efficiency of 90%, the available torque on the blade is 68.04 Nm at a speed of 4.89 rad/s, resulting in an effective power of 332.73 W. This modification is powerful enough to slice cable insulation according to specifications.
Rancang Bangun Website Pembelajaran Interaktif Berbasis Dokumen PDF Menggunakan Artificial Intelligence Suharyanti; Permadi, Raihan Ananda
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

The use of websites as digital learning media continues to grow; however, conventional PDF-based learningstill lacks interactivity and ef icient content understanding. This study aims to design and develop a PDF-basedlearning website integrated with Artificial Intelligence (AI). The research method includes system design usingUnified Modeling Language (UML), web application development with the Flask framework, and MySQL as thedatabase. The developed system provides PDF upload, automatic content summarization, quiz generation, andAI-based question-and-answer features. The results show that the system improves learning ef iciency andsupports better comprehension of learning materials. This website is expected to support more interactive andef ective digital learning environments.
Digitalisasi Manajemen Aset melalui Aplikasi Inventory sebagai Upaya Peningkatan Tata Kelola Organisasi Masyarakat Teofilus Sunarsa; Anis Choirunnisa; Tita Latifah Ahmad; Hagi Sugara Putra; Febri Nabilah
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

This community service aims to implement a digital asset management system based on website and Android for community organizations. This system is designed to overcome manual governance barriers such as data loss and cost inefficiency. The methodology includes field observation, problem identification, and user interface design. The result is an inventory application that enables real-time and systematic asset monitoring. The conclusion shows that the application has successfully improved administrative order and facilitated access to asset information for both management and members.

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