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INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Published by Universitas Negeri Padang
ISSN : 14113414     EISSN : 25499815     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Transportation
INVOTEK: Jurnal Inovasi Vokasional dan Teknologi is a double blind peer-reviewed journal for Technical, Vocasional, Education and Training (VET) related research. This journal provides full open access to its content on the principle that making research freely available to the science community and the public supports a greater global exchange of knowledge and the further development of expertise in the field of Vocational Education and Training (understood in a wide sense and also known as e.g. TVET Technical Vocational Education and Training, Professional Education and Training, Career and Technical Education, Workforce Education).
Arjuna Subject : Umum - Umum
Articles 232 Documents
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Modeling of Fault Alarm Monitoring System on IoT-Based Control Panel Alarm Annunciator Saputra, Ramadhan Dwi; Haryudo, Subuh Isnur; Tjahyaningtijas, Raden Roro Hapsari Peni Agustin; Kartini, Unit Three
invotek Vol 24 No 1 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i1.1175

Abstract

The existence of substation operators is essential for monitoring substation equipment and operating control rooms. In addition, substation operators also have other tasks, such as inspecting substation equipment in the switchyard or in-service inspection (Level 1 inspection). This condition is less than ideal because the operator cannot monitor the control room continuously while in the switchyard. The control panel at the substation is equipped with an alarm annunciator, which is auxiliary equipment that serves to provide warning signs to the operator regarding which protection functions are working. Therefore, it is necessary to have a monitoring system that can provide real-time information about the condition of the control panel alarm annunciator. This research models a fault alarm monitoring system that can provide notification messages according to the type of fault automatically through the Telegram application. The system test results show the average value of 100 test data on the five types of fault, resulting in an accuracy rate of 100%, a precision rate of 100%, a recall rate of 100%, an error rate of 0%, and an F1-score rate of 100%. This is because all test data on the five types of fault were detected correctly, and no test data from other types of fault was detected as the five types of fault. Based on these averages, it can be concluded that using a confusion matrix to measure the performance of the fault alarm monitoring system on the IoT-based control panel annunciator alarm shows excellent system performance results.
Design of an IoT-Based Automatic Switching and Monitoring System for Hybrid Power Plants Aguska, Anggi; Haryudo, Subuh Isnur; Kartini, Unit Three; Rohman, Miftahur
invotek Vol 24 No 1 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i1.1179

Abstract

Hybrid power generation, a power plant that combines two or more plants, continues to grow along with technological advances. The performance of these power plants relies heavily on effective switching and monitoring systems. Monitoring data is critical in maintenance scheduling, preventive intervention, and the timely identification and assessment of environmental changes. One of the switching and monitoring technologies integrated with the Internet is the Internet of Things (IoT) technology. This study introduces a system design capable of wirelessly performing switching operations and transmitting real-time data to a hybrid power plant monitoring system through an application. Test results demonstrate that the system successfully executes automatic switching between the hybrid power plant and the PLN electricity grid based on accumulator voltage thresholds. The monitoring data analysis reveals MAPE values of 2.959% and 3.577% for the voltage and current of the hybrid power plant, and a MAPE of 1% for the accumulator voltage. The voltage and load current readings also exhibit MAPEs of 0.604% and 8.625%. Based on the test results, it can be concluded that this device shows the ability of the system to automate the switching of resources to the load and monitor the hybrid power plant very well, with the smallest MAPE value achieved of 0.604%.
Android Technology in Interactive Learning for Multimedia Animation Courses Devega, Army Trilidia; Herasmus, Hilda; Sabtu, Sabtu; Ambiyar, Ambiyar; Lapisa, Remon; Larisang, Larisang
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1176

Abstract

Interactive learning media is a tool used to deliver learning content by presenting concepts in an engaging manner that can stimulate interest and participation in learning activities to achieve objectives. This study aims to design interactive learning media for the multimedia animation course, making the learning media more varied and enabling students to learn independently. In designing this android-based interactive multimedia, the researcher used adobe flash with the multimedia development life cycle (MDLC) method, which consists of six stages: concept, design, material collecting, assembly, testing, and distribution. The design results in an android-based interactive multimedia application that provides learning and information about the multimedia animation course, including the semester learning plan for the multimedia animation course, teaching materials, practice questions, and multimedia videos. This product has been validated by two validators: a media expert validator and a material expert validator. The media validity assessment score by the media expert validator is 97% (valid), and the material validity assessment score by the material expert validator is 91% (valid), resulting in an overall average score of 0.94, which is considered valid and suitable for use. The practicality test of the developed learning media was conducted with multimedia lecturers, resulting in a score of 98% (very practical), and with Informatics Engineering Students at Ibn Sina University, specializing in multimedia, with 20 participants achieving a score of 90.77% (very practical). The overall average score is 94%, indicating that the media is very practical. Therefore, it can be concluded that the android-based learning media for the multimedia animation course at Ibn Sina University is highly valid and very practical.
Recommendation of Heat Exchanger as Refrigerant Cooler through Mass Balance Calculation in LNG Plant Process Novianarenti, Eky; Poernomo, Heroe; Ningsih, Erlinda; Sriwijayasih, Imaniah; Safitra, Arrad Ghani
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1208

Abstract

The liquefaction unit is a process unit for processing the desired product from the gas phase to the liquid phase. The purpose of this unit is to facilitate the transportation process with the help of refrigerants. The disadvantage of this unit is that the heat transfer is less than optimal. In addition, this study can also maximize the storage system because it can reduce the specific volume of gas up to 1/600 times to increase energy efficiency in the LNG Plant. The potential for various options to increase the efficiency of the liquefaction cycle is tried to be calculated in this study. The calculation method between the mass balance and energy balance obtained the results of the design calculation that the type 2-4 heat exchanger, Carbon steel material, area 1023, 35m2, Rd 0.001-hour ft2 °F / Btu can be concluded that the design of the heat exchanger is safe and recommended.
Problematic Analysis of the National Free School Lunch Policy on Vocational Education Eliza, Fivia; Jamaris, Jamaris; Marsidin, Sufyarma; Sardi, Juli; Habibullah, Habibullah; Fadli, Radinal
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1180

Abstract

Free school lunch policies have been shown to improve student health and well-being in many countries. However, the implementation of these policies in low- and middle-income countries faces significant challenges, including logistical issues, budget constraints, and coordination among stakeholders. This study aims to analyze the challenges faced by countries that have already implemented free lunch programs, with a focus on the lessons learned by Indonesia in preparing a similar policy. This research is a literature review, utilizing a Systematic Literature Review (SLR) method in accordance with the PRISMA guidelines. The study focuses on the 10 highest-cited articles from the Scopus database published between 2019 and 2024 that discuss the implementation of free lunch programs in various countries. Document analysis was employed to extract and synthesize key challenges and solutions. Findings show that the main challenges include difficulties with food distribution in remote areas, lack of sustainable budgets, and suboptimal coordination between the government and schools. The implications of the study highlight the importance of strengthening logistics infrastructure and improving coordination across sectors in Indonesia to ensure smooth implementation of the school lunch policy. Future research needs to focus on the long-term impact of the lunch program on academic achievement and innovative logistics models that can be adapted for remote areas in Indonesia.
The Influence of the Team-Based Learning Model on Students’ Procedural Knowledge Learning Outcomes in Information and Communication Technology Subjects Rofiqoh, Siti; Wijaya, Etistika Yuni; Ningsih, Puji Rahayu; Cahyani, Laili; Diana, Luluk Mauli
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1194

Abstract

Improving students' learning outcomes in terms of procedural knowledge in the subject of Information and Communication Technology (ICT) remains a significant challenge in the field of education. This is due to the limitations of traditional teaching methods, which are less effective in promoting active student engagement and are not optimal in developing critical thinking and problem-solving skills. To address this issue, this study aims to explore the implementation of the Team-Based Learning (TBL) model as an innovative instructional strategy that focuses on teamwork and active participation in the learning process. The TBL model is designed to enhance both conceptual understanding and procedural skills through group discussions, individual and team quizzes, and real-world applications. This study employs a quasi-experimental design involving two groups: an experimental group that applies the TBL model and a control group that uses conventional teaching methods. The results indicate that the implementation of TBL significantly improves students' procedural knowledge, encourages active interaction between teachers and students, and receives positive feedback from learners. These findings highlight the great potential of TBL as an effective approach to improving the quality of ICT learning in schools.
Design and Development of a Web-Based Mosque Management Information System: A Case Study of Darul Amal Mosque Azmi, Meri; Sonatha, Yance; Kirana, Salsabila Okta; Idmayanti, Rika; Afyenni, Rita
invotek Vol 24 No 3 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i3.1205

Abstract

Many mosques in Indonesia face challenges in managing their operational activities, such as construction donations, donations to orphans, funeral donations, and religious assemblies as well as other financial administration. Conventionally, the recording of these activities is still done manually through financial recording in books and socializing the information using loudspeakers or utilizing mosque bulletin boards. To overcome these limitations, this research proposes the development of a Web-based Mosque Management Information System that aims to improve operational efficiency, transparency, and accessibility. The system was developed by taking a case study at Darul Amal Mosque which is a mosque in West Sumatra, Indonesia. The system was developed using PHP programming language and Laravel framework, with an online donation feature that allows donors to make donations without the need to be physically present. The research successfully developed a mosque management platform as expected. And it has been proven that a centralized and easily accessible online management process facilitates financial management, improves services to worshipers and donors, and provides better accountability in mosque operations.
Design and Implementation MPPT Improved Whale Optimization Algorithm to Overcome Partial Shading Condition on Solar Panel Habibi, Muhammad Nizar; Prakoso, Rifqi Noviantono; Adila, Ahmad Firyal; Efendi, Moh. Zaenal; Windarko, Novie Ayub; Eviningsih, Rachma Prilian
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1219

Abstract

Solar energy is a type of renewable energy whose capacity is tremendous and fast in increasing its capacity so that it can be used for energy sustainability in the future. Solar panels are the only devices that can be used to utilize solar energy. Maximum Power Point Tracking (MPPT) is a method to maximize the power generated by solar panels. However, the problem with solar panels is the condition of partial shading, this occurs due to something blocking the rate of solar irradiation to the solar panel. The result is that there are 2 or more maximum power points from solar panels, the highest power is the Global Maximum Power Point (GMPP) and the other is the Local Maximum Power Point (LMPP). This partial shading condition cannot use conventional MPPT methods due to the complexity of finding GMPP. So, MPPT optimization method is needed, one of which is the Improved Whale Optimization Algorithm (IWOA). IWOA is a development of the Whale Optimization Algorithm (WOA) by applying the Sine-Tent-Cosine Map for the first time the algorithm works to be more effective in the initialization process of the algorithm population and can ensure a more uniform distribution of population distribution throughout the search space. IWOA will be applied to the MPPT system to achieve the GMPP of the solar panel under partial shading conditions.
Sales Segmentation Analysis of Tobacco Products Using the K-Means Clustering Method Sonatha, Yance; Erianda, Aldo; Fitri, Redhatul
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1221

Abstract

Technological advancements have encouraged businesses to optimize data utilization, including in sales analysis. This study analyzes sales transaction data of tobacco products at Tobacco Shop Taste using the K-Means Clustering method. By implementing the Cross-Industry Standard Process for Data Mining (CRISP-DM) framework, the sales data were categorized into three groups: highly sold, moderately sold, and less sold. These clustering results support stock management, marketing strategies, and data-driven decision-making. A web-based system was developed, providing real-time monitoring of analysis results, which distinguishes this study from existing solutions by enabling store management to promptly respond to sales trends. This study significantly contributes to the application of data mining technology in the tobacco retail sector, despite being limited to a single store and basic variables. Future development opportunities include integrating broader datasets and analyzing external variables to enhance the accuracy and relevance of the findings.
Optimizing Solar Panel Output with an IoT-Based Solar Tracker: UNIPMA Integrated Lab Case Study Yuniahastuti, Irna Tri; Sunaryantiningsih, Ina; Firmansyah, Arizhal; Akbar, Dian Faisal
invotek Vol 24 No 2 (2024): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v24i2.1222

Abstract

The development and development of new renewable energy has become increasingly widespread recently, one of the most widely used is solar panels. The biggest disadvantage of installing solar panels is that they are not able to follow the movement of the sun so that the power output produced is less than optimal. A solar tracker is a device used to optimize the absorption of sunlight by solar panels by following the movement of the sun. However, the use of sensors on solar trackers often requires quite complicated manufacturing. Therefore, this research aims to design a solar tracker without sensors in photovoltaic (PV) systems. The method in this research is to compare the power produced by solar panels with and without solar trackers based on IoT (Internet of Things) case studies at the UNIPMA Integrated Lab. Data collection was carried out in real time over a period of 3 days starting at 09.00 WIB with a solar panel tilt of 45° until 15.00 WIB with a solar panel tilt of 135°. The results of measurements using a solar tracker on photovoltaic (PV) showed an average current of 0.74 amperes (A), an average voltage of 18.7 volts (V), and an average power output of 14.4 watts. (W). Meanwhile, measurement results without a solar tracker showed an average current of 0.6 amperes (A), an average voltage of 17.9 volts and an average power output of 11.04 watts (W). So, the power produced with a solar tracker is more optimal than without a solar tracker.

Page 21 of 24 | Total Record : 232

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