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Teknika
Published by Sekolah Tinggi Teknologi Warga Surakarta
ISSN : 16936329     EISSN : 23373148     DOI : https://doi.org/10.52561/teknika
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknika merupakan jurnal ilmiah yang menyajikan artikel orisinal tentang pengetahuan dan informasi riset atau aplikasi riset dan pengembangan terkini dalam bidang teknologi. Ruang lingkup Jurnal Teknika meliputi Teknik Mesin, Teknik Elektro, Sistem Informasi, Teknik Industri dan Kimia Tekstil. Design Manufacture Konversi Energi Material Data analysis Artificial Intelligence Virtual Reality Information System Data mining Dessision Support System Instrumentation and Control Electrical (Power) Electronics Engineering Industrial Engineering Optimasi Sistem Produksi Perencanaan Produksi dan Pengendalian Persediaan Penjadwalan dan Manajemen Operasi/Proyek Computer-Integrated Manufacturing System Sustainable Product Design and Manufacturing Penelitian Operasional dan Decision-Making Model Manajemen Teknologi Pengukuran Kerja, Faktor-Faktor Manusia dan Ergonomi Rekayasa dan Pengendalian Kualitas Sistem Logistik dan Supply Chain Management Perancangan dan Pengembangan Produk Concurrent Engineering Analisis Ekonomi Teknik Pemodelan Sistem dan Analisis Simulasi Perancangan Layout Fasilitas Reliability and Maintenance Engineering Sistem dan Teknologi Informasi Rekayasa Pelayanan (Service Engineering) Technopreneurship dan Inovasi Aplikasi Model Stokastik dalam Teknik Industri Aplikasi Metode Metaheuristik dalam Teknik Industri Jurnal ini merupakan sarana publikasi dan ajang berbagi karya riset dan pengembangannya di bidang teknologi. Pemuatan artikel di jurnal ini dialamatkan ke kantor editor. Informasi lengkap untuk pemuatan artikel dan petunjuk penulisan artikel tersedia di dalam setiap terbitan. Artikel yang masuk akan melalui proses seleksi mitra bestari dan/atau editor. Jurnal ini terbit secara berkala sebanyak dua kali dalam setahun (April dan Oktober).
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 115 Documents
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RANCANG BANGUN SISTEM PEMANTAUAN KADAR OKSIGEN DAN BERAT BADAN BAYI PADA INCUBATOR BAYI MENGGUNAKAN BLYNK IOT DAN NODEMCU Aushaaf, Muhammad Hisyam; Wibowo, Kusnanto Mukti; Ishartom, Farid; Latif, Abdul; Romadhona , Gema
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.473

Abstract

Inkubator bayi merupakan alat vital dalam perawatan bayi prematur untuk menjaga suhu tubuh, kelembapan, kadar oksigen, dan memantau berat badan secara stabil. Namun, sistem pemantauan konvensional sering kali belum mampu memberikan data secara real-time maupun terintegrasi dengan sistem peringatan dini. Penelitian ini bertujuan merancang dan membangun sistem pemantauan kadar oksigen dan berat badan bayi pada inkubator menggunakan teknologi Internet of Things (IoT). Sistem ini dibangun dengan sensor MQ-135 untuk mengukur kadar oksigen, load cell untuk berat badan, NodeMCU sebagai mikrokontroler, serta aplikasi Blynk IoT dan LCD sebagai tampilan data. Data dari sensor dikirim secara nirkabel ke aplikasi Blynk dan ditampilkan secara langsung di LCD. Hasil pengujian menunjukkan tingkat akurasi sistem tinggi dengan error rata-rata pengukuran berat hanya 0,40%. Sistem juga mampu memberikan notifikasi suara dan alarm jika kadar oksigen berada di luar rentang aman (19–23%). Alat dan bahan yang digunakan meliputi sensor MQ-135, sensor load cell, modul HX711, NodeMCU, LCD I2C, serta aplikasi Blynk sebagai antarmuka pengguna. Implikasi dari sistem ini adalah tersedianya alat bantu pemantauan yang efektif, akurat, dan real-time bagi tenaga medis, sehingga mampu meningkatkan kualitas layanan dan keselamatan bayi prematur di ruang perawatan intensif rumah sakit.
A PENGARUH VARIASI KOMPOSISI CAMPURAN CARBON ARANG CANGKANG KEMIRI DAN NATRIUM KARBONAT TERHADAP KEKERASAN DAN KEAUSAN PADA MILD STEEL DENGAN PROSES PACK CARBURIZING Pradana, David Bintang; Supriyanto, Agung; Faishal, Afif
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.602

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi komposisi campuran arang cangkang kemiri dan natrium karbonat (Na?CO?) terhadap kekerasan dan ketahanan aus baja karbon rendah (mild steel) melalui proses pack carburizing. Variasi komposisi yang digunakan adalah 60%:40%, 70%:30%, 80%:20%, dan 90%:10% antara arang cangkang kemiri dan Na?CO?. Proses karburisasi dilakukan pada suhu 930 oC untuk memungkinkan difusi karbon ke permukaan baja, diikuti dengan pengujian kekerasan metode Vickers, uji keausan metode Ogoshi, serta analisis komposisi kimia permukaan menggunakan EDX. Hasil penelitian menunjukkan bahwa perlakuan pack carburizing meningkatkan kekerasan baja secara signifikan dibandingkan material awal, dengan kekerasan tertinggi (231,46 HV) diperoleh pada komposisi 80% arang cangkang kemiri 20% Na?CO?. Selain itu, ketahanan aus juga meningkat pada variasi komposisi 90%:10%, dengan nilai keausan spesifik 0,000029103 mm3/kg.m. Analisis EDX mengindikasikan peningkatan kandungan karbon di permukaan baja membuktikan keberhasilan proses difusi karbon.
DESIGN AND IMPLEMENTATION OF A PIEZOELECTRIC PEDESTRIAN-POWERED ENERGY HARVESTING SYSTEM FOR SUSTAINABLE URBAN INSTALLATIONS Islam, Muhammad Qamarul; Ghoni, Ruzlaini; Ibrahim, Mohd Tarmizi; Nugroho, Budi
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.611

Abstract

This project proposes integrating a pedestrian-powered system into a public installation to create a renewable energy source in urban environments. The system utilizes piezoelectric sensors embedded in the sidewalk to convert mechanical energy from footsteps into electrical energy, which is then used to power lights and display kinetic movement in the art installation. The main goal of this project is to provide a participatory, environmentally friendly, and sustainable solution in the form of an interactive artwork, while reducing dependence on conventional energy sources. Test results show that the greater the applied load, the higher the generated voltage. The lowest voltage recorded was 11.76 mV at a weight of 50 kg, while the highest voltage reached 315.16 mV at a weight of 90 kg, with an average voltage of 168.46 mV for the load range of 50–90 kg. These findings demonstrate that piezoelectric technology has great potential as an energy harvesting system in public areas, as it can provide power for energy-efficient devices while enhancing the aesthetic quality and awareness of sustainable energy in urban spaces.
IoT IMPLEMENTATION BASED ON POWER QUALITY NETWORK ANALYZER FOR 3-PHASE INDUCTION MOTOR CONTROL Aiman, Muhammad Afiq; Hussian, Ammar Husaini; Ibrahim, Mohd Tarmizi; Pambudi, Slamet
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.612

Abstract

This study presents the design and implementation of a Power Quality Network Analyzer (PQNA) employing an ESP32 microcontroller to monitor and analyze key power quality parameters, including voltage, current, power factor, and total harmonic distortion (THD) for each phase of a three-phase induction motor. Traditional monitoring systems rely on manual or fixed data acquisition methods, which are inadequate for achieving efficient real-time data analysis. In contrast, the proposed system utilizes the RS-485 communication protocol, ensuring robust and reliable industrial data transfer, and functions as a data gateway that transmits all acquired parameters to the Thinger.io cloud platform for real-time visualization and analytics. This configuration enables enhanced diagnostic capabilities and predictive maintenance, improving system reliability and operational efficiency. Furthermore, the project demonstrates the potential of IoT integration in enabling remote assessment of power quality, thereby minimizing motor downtime and facilitating data-driven decision-making for performance optimization in industrial environments. The proposed framework also contributes to the advancement of intelligent industrial automation, emphasizing how real-time data analytics can significantly enhance productivity and sustainability.
PERFORMANCE ANALYSIS OF FOOTWEAR SENSORS FOR VOLTAGE MONITORING Aiman, Muhamad; Ghoni, Ruzlaini; Ibrahim, Mohd Tarmizi; Fariyono, Fariyono
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.613

Abstract

Advances in wearable technology are driving innovation in efficient, self-powered biomechanical monitoring systems. One promising approach uses piezoelectric sensors to generate energy while detecting foot (plantar pressure) during physical activity. This study aims to design and test a piezoelectric-based insole system capable of performing dual functions: harvesting mechanical energy from footsteps and analyzing fatigue patterns and gait asymmetry. The research used an experimental approach involving 10 male respondents aged 15–31. Each insole was equipped with four DLAY piezoelectric sensors placed on the heel and forefoot of the right and left feet, and connected to a Raspberry Pi Pico RP2040 microcontroller for voltage data acquisition. The data was analyzed using voltage changes to indicate foot pressure distribution and muscle fatigue. The results showed that the system could generate voltages between 0.025 V and 0.082 V, with an average harvested power of 4.8mW. 70% of respondents experienced decreased voltage in one leg, indicating unilateral fatigue and gait imbalance. Respondent 10 showed the most significant voltage decrease in the left heel sensor (<0.03 V after 1000 seconds), while the right foot remained stable (0.045–0.055 V). In contrast, Respondent 5 showed stable and symmetrical voltage distribution throughout the test session.

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