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All Journal Jurnal EECCIS Sistem : Jurnal Ilmu-Ilmu Teknik Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal Jaringan Telekomunikasi Journal of Artificial Intelligence and Digital Business Jurnal ELTEK
Suharto, Nugroho
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Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

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Implementation of LoRa on entrance and exit communication as determination of access to AI building, State Polytechnic of Malang Hartadi, Berlian Mei; Kusumawardani, Mila; Suharto, Nugroho
Jurnal Jaringan Telekomunikasi Vol 13 No 4 (2023): Vol. 13 No. 04 (2023) : December 2023
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v13i4.551

Abstract

The COVID-19 pandemic has changed many areas of life. One of the consequences is that the learning zone causes reduced mobility and limited face-to-face meetings. State Polytechnic of Malang in overcoming face-to-face learning, especially practical learning in the AI ??Building, of course, many students, not only have the need for practical lectures. The research that the author is doing here is a field research using a quantitative approach. This research was conducted at the AI Building of the State Polytechnic of Malang. In collecting the data needed the author uses observation techniques. Discussion used data analysis methods. The results of the research for the RSSI pattern with the transmit power set at 18dBm lora and the antenna frequency used at 433MHz obtained the RSSI value. At a distance of 2m to 8m there is a decrease in RSSI starting from -57dBm to -80dBm, continuing from a distance of 8m to 42m there is an ups and downs in RSSI. The throughput result is strongly influenced by the value of bytes and the time the throughput value when done twice scanning is smaller than four times scanning because the scanning processes have different times, this is in accordance with the calculation formula.
Analysis of Node Router Performance with Babel and OLSR Protocol on MANET in Disaster Area Satriawan, Kelfin Agung; Suharto, Nugroho; Mas'udia, Putri Elfa
Jurnal Jaringan Telekomunikasi Vol 13 No 3 (2023): Vol. 13 No. 03 (2023) : September 2023
Publisher : Politeknik Negeri Malang

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Abstract

Natural disasters are events caused by nature, including earthquakes, tsunamis, volcanic eruptions, droughts, hurricanes, and landslides. Natural disasters can cause telecommunications infrastructure to become damaged or malfunction. Therefore, flexible network technology is needed and does not depend on infrastructure, so that when the existing infrastructure is not functioning, humans can still communicate. One of the network technologies that is flexible and has infrastructureless characteristics, or basically does not require infrastructure, is Mobile Ad-hoc Network (MANET) technology. So that MANET technology becomes an option that can be a solution to existing problems, namely when a natural disaster occurs and the existing telecommunications infrastructure doesn't function. In the MANET network to communicate data between nodes that are far apart, it takes hops to a node in order to communicate, when a node is selected as a hop, the node will automatically act as a router node, the role of the router node is as a successor or communication liaison from a node to other nodes. In a router node, the parameters that are considered are CPU usage and RAM usage, because with increasing communication the router will process more data so it will take time to process the data, this will cause delay process. In this study, the performance of router nodes on Babel and OLSR will be discussed on the performance of router nodes on a fixed network with a stationary, moving and swapping node testing scheme. The parameters used in this study are CPU usage, RAM usage, and delay process.
Overcoming Network Security on Host-Based Intrusion Detection System (HIDS) With IP and PORT Blocking Methods Abdurrohman, Muhammad; Suharto, Nugroho; Mas'udia, Putri Elfa
Jurnal Jaringan Telekomunikasi Vol 13 No 3 (2023): Vol. 13 No. 03 (2023) : September 2023
Publisher : Politeknik Negeri Malang

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Abstract

Network security is important to maintain security on a network, the data and information contained in it. Based on the protection of data/information security in a network, generally all data-based security theories are created and applied to secure a particular network. Network security methods that have emerged such as using IDS (intrusion detection system), Intrusion Detection System (IDS) or intruder detection system are computer systems (can be a combination of software and hardware) that attempt to detect intrusions. At this time DOS attacks or software that occur to the general public in the form of (browsers, files, videos or images) that often occur with the aim that the server or network is unable to accommodate the traffic, causing the website/service down and cannot operate. Therefore, to assist in these attacks, it is necessary to apply blocking IP and PORT by using blocking so as to be able to add research on network protection in the internet world.
A 2x4 Element Rectangular H-Slot Array Microstrip Antenna Rectifier for Harvesting Electromagnetic Energy at 2.4 GHz Frequency Darmono, Hendro; Koesmarijanto, Koesmarijanto; Suharto, Nugroho; Ratnawati, Yani; Cahyono , Agung Dwi
Jurnal Jaringan Telekomunikasi Vol 13 No 3 (2023): Vol. 13 No. 03 (2023) : September 2023
Publisher : Politeknik Negeri Malang

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Abstract

This research aims to develop an energy capture system, specifically an antenna rectifier. The chosen antenna for this purpose is a microstrip antenna operating at a frequency of 2.4 GHz, utilizing a 2x4 array configuration to enhance the collection of electromagnetic waves emitted by an Access Point. To enhance the rectifier's voltage-doubling capability, the design incorporates three distinct levels: level 8, level 12, and level 14. Experimental results from implementing the 2x4 rectangular H-Slot array microstrip antenna rectifier demonstrate its capacity to convert incoming AC waves from the antenna into DC voltage. During the implementation phase, the rectenna harvesting system exhibits notable outcomes. The most significant outcome is observed in the 14th-level rectifier circuit, yielding a conversion of 101.98 mV when positioned 50 cm away from the wireless source or access point. This voltage reading diminishes to 49.148 mV at 200 cm. In the 12th-level rectifier circuit, the values are 64.8 mV at 50 cm and 39.08 mV at 200 cm. Furthermore, the 8th level circuit generates 24.72 mV at 50 cm and 11.4 mV at 200 cm. Evidently, the proximity of the testing distance correlates with the magnitude of the produced voltage.
ANALISIS PERPINDAHAN MASSA DAN UJI ORGANOLEPTIK RASA TERHADAP PENERAPAN DEEP FAT FRYING PADA PEMBUATAN ABON IKAN LAUT Zainuri, Ach. Muhib; Patma, Tundung Subali; Suharto, Nugroho
SISTEM Jurnal Ilmu Ilmu Teknik Vol 19 No 3 (2023)
Publisher : Fakultas Teknik Universitas Wisnuwardhana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37303/sistem.v19i3.273

Abstract

Ikan tergolong bahan pangan yang cepat mengalami pembusukan dibandingkan dengan jenis makanan lain akibat bakteri dan perubahan kimiawi. Karena ikan tergolong bahan pangan mudah busuk, perlu dilakukan penanganan dan pengolahan hasil perikanan secara baik. Salah satu proses pengolahannya adalah menjadi abon ikan. Salah satu tahapan penting dalam pembuatan abon ikan adalah penggorengan yang membuat produk pangan lebih lezat, prosesnya cepat, dan menjaga produk pangan lebih baik. Contoh teknlogi penggorengan adalah deep fat frying yang merupakan proses di mana produk makanan dipanaskan dan dikeringkan dengan merendamnya di dalam minyak goreng, umumnya pada suhu 170?190oC, sebagai penghantar panas selama periode waktu tertentu. Desain penelitian yang dilakukan adalah: (1) Rancang bangun alat deep fat frying suhu terkontrol dilengkapi dengan automatic fish floss, (2) Analisis kadar air produk abon ikan laut, (3) Analisis kadar minyak produk abon ikan laut, dan (4) Uji organoleptik produk abon ikan. Hasil akhir dari kegiatan penelitian ini adalah (1) dihasilkannya alat deep fat frying yang akan diterapkan pada industri mitra, dan (2) didapatkannya suatu formulasi tepat dalam pembuatan abon ikan laut berdasarkan parameter input yang telah ditentukan.
Indikator konsentrasi pelarut tembaga berbasis IOT Darmono, Hendro; Koesmarijanto, Koesmarijanto; Suharto, Nugroho
JURNAL ELTEK Vol. 20 No. 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/eltek.v20i2.355

Abstract

Penelitian ini menguji kinerja perangkat pelarut tembaga skala kecil untuk digunakan di labotarium elektronika. Bahan kimia ferri clorida 40 % 1500 ml digunakan sebagai bahan pelarut dasar, perangkat ini digunakan untuk menghapus atau menghilangkan sebagian lapisan tembaga yang tidak diperlukan pada rangkaian di Printed Circuit Board (PCB). Sebuah kamera digunakan sebagai sensor kepekatan larutan yang telah digunakan untuk menghapus lapisan tembaga. Data sensor diproses dengan menggunakan Raspberry Pi yang digunakan sebagai pembanding perhitungan kepekatan larutan secara manual dan data dikirimkan ke aplikasi android. Metoda pengalamatan warna Red, Green, dan Blue (RGB) digunakan untuk menentukan kadar tembaga berdasarkan warna yang ditangkap kamera. Hasil pengujian menunjukkan kamera mengidentifikasi warna untuk kadar tembaga dalam laruran mulai dari 0% sampai dengan 0,121 % dan waktu yang diperlukan untuk melarutkan tembaga mencapai 45 menit yang akan digunakan acuan untuk menentukan larutan sudah jenuh. Hasil pengolahan data menghasilkan tampilan kejenuhan dari 30% sampai dengan 100%, artinya perubahan warna untuk kadar laruran kurang dari 0,02% tidak dapat diidentifikasi demikian juga untuk diatas 0,121%. Dengan demikian dapat disimpukan perangkat ini hanya mampu mendeteksi kadar tembaga dalam pelarut diatas 0.02% hingga maksimum 0,121%. ABSTRACT This research tested the performance of a small-scale copper solvent device for use in an electronics laboratory. The chemical ferric chloride 40 % 1500 ml is used as a primary solvent. This device removes or partially removes the copper layer that is not needed on the circuit on the Printed Circuit Board (PCB). A camera is used as a sensor for the concentration of a solution used to remove the copper layer. Sensor data is processed using a Raspberry Pi, which compares the attention of the solution manually and the data sent to the Android application. The Red, Green, and Blue (RGB) colour addressing method is used to determine the copper content based on the colour captured by the camera. The test results show the camera identifies the colour for the copper content in the solution ranging from 0% to 0.121%. The time required to dissolve the copper reaches 45 minutes, which will be used as a reference to determine whether the solution is saturated. The data processing results produce a saturation display from 30% to 100%, meaning that the colour change for a solution content of less than 0.02% cannot be identified as well as for those above 0.121%. Thus, it can be concluded that this device can only detect copper levels in solvents above 0.02% up to a maximum of 0.121%.
Sistem pemesanan pintar di Pujasera menggunakan QR code dan smartphone Rasyid, Abdul; Suharto, Nugroho; Adzikirani, Adzikirani
JURNAL ELTEK Vol. 20 No. 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/eltek.v20i2.360

Abstract

Pada proses pemesanan makanan di pujasera terkadang terdapat beberapa kesulitan yang menyebabkan terhambatnya proses pengantaran makanan diantaranya adalah sulitnya mengidentifikasi pelanggan yang memesan, dimana letak posisi pemesan, dan lamanya proses yang terjadi. Pada proses pemesanan, makanan menggunakan sistem konvensional, pelayan harus meneriakan nama pemesan untuk mencari tempat pemesan. Pada sistem pemesanan pujasera sendiri terdiri dari beberapa tahapan, mulai dari pemilihan kedai, pemesanan minuman atau makanan sampai makanan telah siap disajikan. Pada penelitian ini dibuat suatu sistem pemesanan pintar pujasera menggunakan QR code dan aplikasi android. Untuk pemesanan pelanggan harus memindai QR code dan kemudian memilih kedai, makanan dan minuman yang akan dipesan. Setelah dibayar, data pemesanan berupa makanan, minuman, nama pelanggan dan nomor meja akan dikirimkan ke masing-masing kedai untuk di proses dan setelah pesanan selesai disiapkan, sistem akan mengirimkan notifikasi ke pelayan agar pesanan segera diantar oleh pelayan ke pemesan. Sistem yang dibuat menggunakan software pendukung yaitu kodular. Untuk mendeteksi pesanan yang sudah disiapkan menggunakan sensor hc-SR04, modul wifi esp8266, dan buzzer. Selanjutnya akan dikirimkan ke database firebase dan akan di tampilkan pada aplikasi web di kasir. ABSTRACT In ordering food at food courts, sometimes some difficulties cause too many delays in the food delivery process. Among them is the problem of identifying the customer who collected, the position of the orderer, and the length of the process. For example, in ordering food using a conventional system, the waiter must shout the customer's name to find a place to call. The food court ordering system consists of several stages, from choosing a shop to ordering drinks or food until the food is ready to be served. This study created an intelligent food court ordering system using a QR code and an android application. For customer orders, they must scan the QR code and select the shop, food and drink to be ordered. After being paid, the collected data in the form of food, drinks, customer names and table numbers will be sent to each shop to be processed and after the order has been prepared, the system will send a notification to the waiter so that the waiter immediately delivers the order to the customer. The system is made using supporting software, namely modular. To detect orders that have been prepared using the HC-SR04 sensor, esp8266 wifi module, and buzzer. The order and notification will then be sent to the firebase database and displayed on the web application at the checkout.
Performansi server VoIP (Voice Over Internet Protocol) sebagai sarana pembelajaran hibrid Kusumawardani, Mila; Suharto, Nugroho; Dali, Sri Wahyuni; Widjajanti, Kristina; Putri, Atika Yulia Sari; Widyantari, Nabila
JURNAL ELTEK Vol. 22 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/eltek.v22i1.4506

Abstract

Media pembelajaran merupakan salah satu aspek yang menetukan kualitas pendidikan. Bagi daerah perkotaan, media pembelajaran digital mudah dijangkau dan beragam. Namun, bagi daerah yang masih terbelakang, hal ini cukup sulit untuk diakses. Metode pembelajaran hibrid dapat menjadi salah satu pilihan bagi sekolah saat ini dikarenakan dapat memberikan pengaruh positif yaitu siswa dapat terlatih belajar secara mandiri namun juga tetap mendapat pelajaran secara luring. Namun, untuk daerah yang belum terjangkau internet, pembelajaran hibrid masih terbilang sulit untuk diterapkan, maka dari itu diperlukan jaringan intranet yang dapat diakses siswa maupun guru tanpa adanya jaringan internet. Tujuan dari penelitian ini yaitu membuat server pembelajaran dengan memanfaatkan sistem Voice over Internet Protocol (VoIP) berbasis Web Server. Konten yang disajikan dalam website ini dikemas dalam bentuk video dan latihan soal, serta antar siswa dengan guru dapat berkomunikasi menggunakan fitur komentar yang disediakan. Perancangan sistem menggunakan metode penelitian pengembangan dan pembuatan. Pengujian performa layanan dilaksanakan dengan menguji Quality of Service (QoS) meliputi Delay, Jitter, Throughput, dan Packet Loss. Analisa performa jaringan ini bertujuan untuk mengetahui kemampuan website dalam mengirim dan menerima data kepada pengguna saat diakses. ABSTRACT Learning media is one aspect that determines the quality of education. For urban areas, digital learning media is easy to reach and diverse. However, for underdeveloped areas, this is quite difficult to access. The hybrid learning method can be an option for schools at this time because it can have a positive influence, namely that students can be trained to learn independently but also still receive lessons offline. However, for areas that do not have internet access, hybrid learning is still difficult to implement, therefore an intranet network is needed that can be accessed by students and teachers without an internet network. The aim of this research is to create a learning server by utilizing a Web Server-based Voice over Internet Protocol (VoIP) system. The content presented on this website is packaged in the form of videos and practice questions, and students and teachers can communicate using the comments feature provided. System design uses development and manufacturing research methods. Service performance testing is carried out by testing Quality of Service (QoS) including Delay, Jitter, Throughput and Packet Loss. This network performance analysis aims to determine the website's ability to send and receive data to users when accessed.
IoT-Based RFID System for Enhancing Kindergarten Student Safety : A Case Study Masudia, Putri Elfa; Suekko, Febiola Kireya; Suharto, Nugroho
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.891

Abstract

Antonius Kindergarten is one of the kindergartens whose school building is a courtyard with a higher school level, namely SDK Santa Maria, and adjacent to the highway. One of the major safety concerns is the staircase leading to the second floor of the elementary school building, which connects directly to the hallway used by kindergarten students to access the bathroom This access point poses a significant risk, as kindergarten students often ascend the stairs unsupervised, resulting in injuries or crying without being noticed by teachers or staff. There is no guard because the staircase access is in the middle of the elementary school building. Based on this background, an automatic student security monitoring system is needed by utilizing technology, namely RFID (Radio Frequency Identification) and a website as a user interface. Based on the results of the RFID reading distance test using two models of tags, bracelets, and I.D. cards at 3 points of the area (gate, front door, stairwell) and 2 points of the height of the RFID reader (1.8 meters and 1.5 meters) the farthest distance of the RFID reader reading was obtained was 5 meters (I.D. card model rails area) and 3.5 meters (front door area bracelet model). The warning alarm for kindergarten admins sounds for 5 seconds repeatedly with a pause from the minimum reading distance of the RFID reader of 0.3 seconds. The farther away the Tag is from the reader, the longer the pause is.
Pembagian Beban Trafik pada Cluster Server Kusumawardani, Mila; Suharto, Nugroho; Zakaria, Muhammad Nanak
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 16 No. 1 (2022)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v16i1.619

Abstract

Permasalahan yang ada pada server adalah banyaknya user yang mengakses dalam waktu bersamaan. Untuk mengatasinya dapat digunakan konsep cluster server. Metode yang digunakan dalam artikel ini adalah membangun 3 cluster server web  dan 1 load balancer dari 4 buah Nanopi2 serta  mengimplementasikan algoritma round robin dalam pengaturan kerjanya. Hasil yang diperoleh adalah bahwa terjadi pembagian beban trafik yang berimbang di antara 3 server dengan rata-rata pada saat server menerima request dari client adalah 33.57%, 32.64%, dan 33.8%, serta rata-rata pada saat server memberikan response adalah 33.47%, 34.14%, dan 35.35%
Co-Authors Abdul Rasyid Adzikirani, Adzikirani Asrori Asrori Cahyono , Agung Dwi Darmono, Hendro Hartadi, Berlian Mei Helmy, Abdullah Koesmarijanto, Koesmarijanto Kusumawardani, Mila Mas'udia, Putri Elfa Masudia, Putri Elfa Muhammad Abdurrohman, Muhammad Patma, Tundung Subali Putri, Atika Yulia Sari R.N. Akhsanu Takwim, R.N. Akhsanu Ratnawati, Yani Satriawan, Kelfin Agung Sri Wahyuni Dali Suekko, Febiola Kireya Widjajanti, Kristina Widyantari, Nabila Zainuri, Ach. Muhib Zakaria, Muhammad Nanak