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All Journal TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Jurnal Inkofar
Sri Lestari Kusumastuti
Politeknik Negeri Jakarta
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Development and Performance Testing of a PANI–GO Soil Conductivity Sensor Nuralam Nuralam; Rizdam Firly Muzakki; Sri Lestari Kusumastuti; Hariyanto Hariyanto
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 12 No 1 (2026): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v12n1.118-125

Abstract

Smart agriculture systems require soil sensors capable of monitoring environmental conditions in real-time and with high accuracy. This research presents the design and fabrication of a soil conductivity sensor prototype using a composite material of Polyaniline (PANI) and Graphene Oxide (GO). The prototype is designed with a two-electrode structure based on copper layers, where the active PANI–GO layer functions as a conductive path that responds to soil moisture and ion levels. The PANI–GO composite was synthesized through a polymerization method and then applied to copper-based electrodes. Test results showed detectable changes in resistance according to variations in soil moisture content, where resistance values decreased as the soil became moister and more fertile. Moisture levels were adjusted to 10%, 20%, 30%, and 40% for two soil types: fertile and infertile. These results indicate the potential of the composite material as a simple soil sensor that can be further developed for Internet of Things (IoT) applications in agriculture. This study serves as a foundational step in the development of low-cost, flexible, and easily integrated conductive soil sensors.
IMPLEMENTASI FISHBONE DIAGRAM DALAM ANALISIS BREAKDOWN DIVISI MAINTENANCE LISTRIK PADA PRODUKSI BAJA DI PT X Rizdam Firly Muzakki; Nuralam; Sri Lestari Kusumastuti
INKOFAR Vol. 9 No. 1 (2025)
Publisher : Politeknik META Industri Cikarang

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Abstract

Breakdown time is one of the events that must be minimized, even eliminated in every production process in the manufacture sector. PT X as one of the national steel producers also strives to optimize the production process, considering that the capital needed to produce steel is relatively high. Breakdown time needs to be analysed properly to get the right and accurate solution. One of the tools that can be used is fishbone diagram. Based on the data obtained, it is known that the two most dominant obstacles that occurred during the December - May period occurred in the Crop Shear and Flying Shear areas. In the Crop Shear area, it is known that the motor trips due to indications of overspeed, while in the Flying Shear area the motor works abnormally due to indications of a dead oil pump. Maintenance and repair actions are then designed based on the results of the analysis obtained to anticipate the original occurrence in the future through corrective and preventive maintenance.
Co-Authors Hariyanto Hariyanto Nuralam Nuralam Nuralam Rizdam Firly Muzakki