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This Author published in this journals
All Journal International Journal of Electrical and Computer Engineering International Journal of Reconfigurable and Embedded Systems (IJRES) Journal of Robotics and Control (JRC) Journal of Innovation Information Technology and Application (JINITA)
Mochammad Haldi Widianto
Bina Nusantara University
Aerospace Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Mechanical Engineering

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Novel asymmetric space vector pulse width modulation for dead-time processing in three-phase power converters Indriarto Yuniantoro; Mochammad Haldi Widianto
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 3: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i3.pp2346-2352

Abstract

This research analyzes the asymmetric control strategies in multilevel inverters, including asymmetric techniques in space vector modulation of power converters. Modulation parameters such as reference voltage vector (Vref), switching time, and duty cycle are derived in the three-dimensional spatial vector geometry formulation. Asymmetric space vector pulse width modulation (SVPWM) is unique in specifying modulation parameters, has unequal tetrahedron patterns, accompanied by application examples for the upper and lower sector pairs of a tetrahedron. The combination of the switch in the form of an inclined cylinder produces twelve pairs of asymmetric tetrahedrons where the voltage vector positions are in the other twenty-four tetrahedrons. The calculation shows processing dead-time in switching, which is used for current compensation in three-phase power converters.
Energy saving on IoT using LoRa: a systematic literature review Mochammad Haldi Widianto; Arief Ramadhan; Agung Trisetyarso; Edi Abdurachman
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 11, No 1: March 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v11.i1.pp25-33

Abstract

The development of devices connected to the internet is very significant, encouraging the creation of the internet of things (IoT). With remote systems, IoT is not enough to use in case of internet instability. By using long range (LoRa), IoT systems can now solve this problem. Millions of data make IoT-LoRa have to spend a lot of energy. This paper helps discover where recent studies offer a broad perspective on energy savings using the systematic literature review (SLR). The paper extracted 252 articles from IEEE, ACM, MDPI, Springer, Hindawi, ScienceDirect, and IAES. 44 articles passed the specified inclusion and exclusion criteria. The article focuses on knowledge about IoT-Lora, energy saving needs, energy saving factors, and the paper demographics. The author synthesizes studies for that purpose on IoT applications using LoRa.
Implementasi Raspberry Pi untuk membantu Klinik dan Pengembangan Website Klinik menggunakan Rapid Application Development Mochammad Haldi Widianto; Della Ihsanti Kusnadi
Journal of Innovation Information Technology and Application (JINITA) Vol 4, No 1 (2022): JINITA, June 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.169 KB) | DOI: 10.35970/jinita.v4i1.1254

Abstract

The development of Internet of Things (IoT) tools and components has often been used in agriculture, plantations, and smart homes. One of the microcontroller components can take advantage of the Raspberry Pi because it is similar to a small computer. Another thing that makes web-based application development can take advantage of Rapid Application Development (RAD) because it is considered very flexible and can iterate on the design and development section where that section requires special focus due to the possibility of the same error. There are several studies related to utilizing website development to help in hospitals. However, the real problem is that technology such as clinical information websites has not been widely used for small clinics. This development website is supported by the location of the clinics, which are far from the urban center. The Others is supported by research on website development in clinics, not too many. So this study has a goal, namely the development of a website application with the help of a Raspberry Pi as a computer replacement medium (having wifi and a processor) which is applied to clinical LED TV because there is no computer to display it, and making the administration of the website itself tested by testing and evaluation using Black Box and User Acceptance Test (UAT). In testing and evaluation, it was found that 5 trials of Black Box testing got good results with all categories achieved. 71.06% of UAT results are included in the "Satisfied" category on the UAT test, where the best result is "Very Satisfied". Furthermore, research has not focused on the actual application of IoT and needs to be studied more deeply in making IoT integrated with the website.
A Systematic Review of Current Trends in Artificial Intelligence for Smart Farming to Enhance Crop Yield Mochammad Haldi Widianto; Mochamad Iqbal Ardimansyah; Husni Iskandar Pohan; Davy Ronald Hermanus
Journal of Robotics and Control (JRC) Vol 3, No 3 (2022): May
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v3i3.13760

Abstract

Current technology has been widely applied for development, one of which has an Artificial Intelligence (AI) applied to Smart Farming. AI can give special capabilities to be programmed as needed. In cooperation with agricultural systems, AI is part of improving the quality of agriculture. This technology is no stranger to being applied in basic fields such as agriculture. This smart technology is needed to increase crop yields for various regions by utilizing the current trends paper. This is necessary because less land is available for agriculture, and there is a greater need for food sources. Therefore, this systematic review aims to collect the current trends in AI studies for Smart Farming papers using the latest year features from 2018-2022. This paper is handy for researchers and industry in looking for the latest papers on research to enhance crop yields. The authors utilized Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) of 534 articles from IEEE, ACM, MDPI, IAES, and ScienceDirect. After going through a careful process, 67 papers were found that were judged according to the criteria. After the authors got some of the current trends, the author has discussed several factors regarding the results obtained to enhance crop yields, such as Weather, Soil, Irrigation, Unmanned Aerial Vehicle (UAV), Pest Control, Weed Control, and Disease Control.
A Systematic Review of LPWAN and Short-Range Network using AI to Enhance Internet of Things Mochammad Haldi Widianto; Ardiles Sinaga; Maria Artanta Ginting
Journal of Robotics and Control (JRC) Vol 3, No 4 (2022): July
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v3i4.15419

Abstract

Artificial intelligence (AI) has recently been used frequently, especially concerning the Internet of Things (IoT). However, IoT devices cannot work alone, assisted by Low Power Wide Area Network (LPWAN) for long-distance communication and Short-Range Network for a short distance. However, few reviews about AI can help LPWAN and Short-Range Network. Therefore, the author took the opportunity to do this review. This study aims to review LPWAN and Short-Range Networks AI papers in systematically enhancing IoT performance. Reviews are also used to systematically maximize LPWAN systems and Short-Range networks to enhance IoT quality and discuss results that can be applied to a specific scope. The author utilizes selected reporting items for systematic review and meta-analysis (PRISMA). The authors conducted a systematic review of all study results in support of the authors' objectives. Also, the authors identify development and related study opportunities. The author found 79 suitable papers in this systematic review, so a discussion of the presented papers was carried out. Several technologies are widely used, such as LPWAN in general, with several papers originating from China. Many reports from conferences last year and papers related to this matter were from 2020-2021. The study is expected to inspire experimental studies in finding relevant scientific papers and become another review.
Implementasi Raspberry Pi untuk membantu Klinik dan Pengembangan Website Klinik menggunakan Rapid Application Development Mochammad Haldi Widianto; Della Ihsanti Kusnadi
Journal of Innovation Information Technology and Application (JINITA) Vol 4 No 1 (2022): JINITA, June 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.169 KB) | DOI: 10.35970/jinita.v4i1.1425

Abstract

One of the Internet of Things (IoT) components is a microcontroller. One of the many microcontrollers is the Raspberry Pi. This component is often used because it is similar to a small computer. Many people use Rapid Application Development (RAD) in making web-based applications because it is considered very flexible and can iterate on the design and development section. There are several studies related to utilizing website development to help hospitals. However, the real problem is that the use of technology such as clinical information websites has not been widely used for small clinics. This is hampered by the location of the clinics, which are far from the urban center. This study has a goal to develop a website application with the help of a Raspberry Pi. This component works as a computer replacement medium (having wifi and a processor) applied to clinical LED TV because there is no computer to display it, and making the administration of the website itself tested by testing and evaluation using Black Box and User Acceptance Test (UAT). In testing and evaluation, it was found that 5 trials of Black Box testing got good results with all categories achieved. 76.13% of UAT results are included in the "Satisfied" category on the UAT test where the best result is "Very Satisfied". Furthermore, research has not focused on the actual application of IoT and needs to be studied more deeply in making IoT integrated with the website
Development of IoTs-based instrument monitoring application for smart farming using solar panels as energy source Yovanka Davincy Setiawan; Bryan Ghilchrist; Gerry Giovan; Mochammad Haldi Widianto
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 12, No 2: July 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v12.i2.pp248-259

Abstract

Indonesia is currently carrying out an industrial revolution 4.0. This revolution discusses the application of technology in the industrial sector, one of which is the agricultural sector. In addition to discussing the application of technology, this revolution also supports the use of renewable energy sources and one of them is the application of solar energy. The application of technology in the agricultural sector is expected to help farmers in maintaining crops to reduce the possibility of crop failure. The existence of this statement makes researchers conduct research in the design and construction of systems with internet of things (IoT) technology and utilize solar energy sources as energy sources for the system. The IoT system will utilize the ATmega328P+ESP8266 RobotDyn microcontroller by utilizing the DHT22, MD0127, soil moisture sensor, and BH1750FVI sensors and sending data to Thingspeak by utilizing the internet network with HTTP communication protocols. The system can monitor ecological factors in gardens with a fairly good degree of accuracy and the utilization of solar energy can run the system properly.
Co-Authors Agung Trisetyarso Ardiles Sinaga Arief Ramadhan Bryan Ghilchrist Davy Ronald Hermanus Della Ihsanti Kusnadi Della Ihsanti Kusnadi Edi Abdurachman Gerry Giovan Husni Iskandar Pohan Indriarto Yuniantoro Maria Artanta Ginting Mochamad Iqbal Ardimansyah Yovanka Davincy Setiawan