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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Amplifier: Jurnal Ilmiah Bidang Teknik Elektro dan Komputer Jurnal Abdimas Indonesia
Ika Novia Anggraini
Program Studi Teknik Elektro Fakultas Teknik Universitas Bengkulu
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Pengujian Sludge Battery Dengan Teknologi Microbial Fuel Cell Sebagai Sumber Energi Listrik Terbarukan Ika Novia Anggraini; Afriyastuti Herawati
JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER Vol 8, No 2 (2018): Amplifier November 2018
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jamplifier.v8i2.15091

Abstract

ABSTRACTMicrobial Fuel Cells are devices which convert chemical energy into electrical energy through catalytic reactions by microorganisms. In this study, the potential of electricity in MFC will be analyzed by using samples of sea mud, lake mud, land mud, and river mud. While the method used in this study is one series connected vessel, two vessels connected series with mud-water, two mud-mud series vessels, and the stack series method. The highest electrical conductivity produced by river mud reaches 3.63 mS/cm, while the lowest is lake mud with a conductivity value of 0.35 mS/cm. The highest electric power density produced by river mud by the two mud-mud vessel method is 46.766 mW/m2, while the lowest electrical power density in lake mud is 18.040 mW/m2. The highest electrical power is produced by river mud through a single vessel series system with a maximum power of 7.26 mW, while the lowest power is found in marine mud with a system of two mud-water vessels which is equal to 0.30 mW. The pattern of increase in voltage or current produced by the battery sludge is on average until the 7th day, then a decrease occurs until the last day of testing. The greatest potential for electrical energy is obtained by river mud using a single vessel series system with a maximum voltage of 5.38 V and lasting up to 14 days.Keyword : electric power density, microbial fuel cells, sludge battery
Pengenalan Gangguan Ginjal Melalui Iridologi Menggunakan Hidden Markov Model (HMM) Reza Satria Rinaldi; Wagiasih Wagiasih; Ika Novia Anggraini
JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER Vol 9, No 2 (2019): Amplifier November 2019 Vol 9 No 2
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jamplifier.v9i2.15379

Abstract

ABSTRACTIridology has not been widely applied for the recognition of kidney disorders. identification of kidney disorders through iris image using iridology chart, can make it easier to make diagnosis to find out about kidney disorders. The method used in the process of recognition of kidney disorders through iridology is the Hidden Markov Model (HMM) method, with a HMM parameter determination system using the calculation of the koefisien Singular Value Decomposition (SVD) coefficient. The size of the codebook used is 7, i.e. 16, 32, 64, 128, 256, 512 and 1024. Different sizes of codebooks will result in different recognition times. The time needed will be longer when the size of the codebook is getting bigger. The accuracy of the process of recognition of kidney disorders through iridology using the HMM method in this study is 68.75% for codebook 16, 87.5% for codebook 32, 100% for codebook 128 and 100% for codebook 512. Keywords : iridology, codebook, image processing, singular value decomposition (SVD), Hidden Markov Model (HMM).
Penerapan listrik tenaga surya sistem hybrid sebagai sumber energi listrik lampu selasar PSTW Provinsi Bengkulu Reza Satria Rinaldi; Ika Novia Anggraini; Afriyastuti Herawati
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 2 (2025): March
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i2.29098

Abstract

AbstrakPengabdian kepada masyarakat (PpM) di Panti Sosial Tresna Werdha (PSTW) Bengkulu dilakukan untuk mengoptimalkan pemanfaatan listrik tenaga surya sebagai suplai daya lampu selasar PSTW Provinsi Bengkulu yang telah dipasang dalam kegiatan PpM Berbasis Riset Fakultas Teknik Universitas Bengkulu 2023. Kekurangan sistem yang telah dipasang dalam kegiatan PpM tersebut yaitu tidak tercukupinya listrik tenaga surya untuk kebutuhan suplai energi listrik lampu selasar PSTW Provinsi Bengkulu saat cuaca mendung. Optimalisasi dilakukan untuk mengatasi kekurangan sistem yang telah terpasang pada tahun 2023 dengan meningkatkan kapasitas penyimpanan energi surya dan menjaga lampu tetap menyala sesuai waktunya meskipun adanya keterbatasan energi surya yang tersimpan. PpM berhasil mengoptimalkan pemanfaatan listrik tenaga surya untuk lampu selasar PSTW dengan terpasangnya dua unit baterai VRLA 12V 100Ah yang dilengkapi dengan rangkaian kendali otomatis untuk mengelola suplai energi listrik lampu sistem hybrid. Dengan adanya rangkaian kendali yang dipasang, suplai energi listrik lampu secara otomatis beralih dari suplai energi listrik utama memanfaatkan listrik tenaga surya ke suplai energi listrik cadangan dari sumber listrik PLN saat dibutuhkan. Pada hari mendung sekalipun, ketika energi listrik yang tersimpan pada baterai tidak cukup untuk menyalakan lampu, lampu selasar PSTW tetap menyala memanfaatkan cadangan dari sumber listrik PLN. Kata kunci: listrik tenaga surya; lampu selasar; kendali otomatis; sistem hybrid. AbstractThe Community Service (PpM) at the Panti Sosial Tresna Werdha (PSTW) of Bengkulu Province was conducted to optimize the use of solar power as a lighting supply for the corridors of PSTW, which had been installed as part of the 2023 Research-Based Community Service program by the Faculty of Engineering, University of Bengkulu. The deficiency of the system installed in the community service activity was that the solar power was insufficient to meet the electricity supply needs for the corridor lights at the PSTW of Bengkulu Province during cloudy weather. Optimization was carried out to address the shortcomings of the system installed in 2023 by increasing the solar energy storage capacity and ensuring the lights remained on for the required duration, even with limited stored solar energy. The PpM successfully optimized the use of solar energy for the corridor lights at PSTW by installing two 12V 100Ah VRLA batteries, along with an automatic control circuit to manage the hybrid system lamp electricity supply. With the installed control circuit, the electricity supply for the lights automatically switches from the primary solar energy supply to backup power from the PLN electricity source when needed. Even on cloudy days, when the stored battery energy is insufficient to power the lights, the corridor lights at PSTW remain on, utilizing backup power from the PLN electricity source. Keywords: solar electricity; hallway lights; automatic control; hybrid system
PENERAPAN TEKNOLOGI SOL-ARSAT PADA SISTEM LAMPU DC 12 V DI SELASAR PSTW PROVINSI BENGKULU Reza Satria Rinaldi; Afriyastuti Herawati; Ika Novia Anggraini
Jurnal Abdimas Indonesia Vol 8, No 1 (2026): JURNAL ABDIMAS INDONESIA
Publisher : Universitas Muhammadiyah Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26751/jai.v8i1.3197

Abstract

Panti Sosial Tresna Werdha (PSTW) Provinsi Bengkulu menghadapi permasalahan kurangnya penerangan pada area selasar yang menjadi akses utama penghuni dalam beraktivitas pada sore dan malam hari. Sistem Pembangkit Listrik Tenaga Surya (PLTS) off-grid yang dipasang melalui program pengabdian sebelumnya belum mampu beroperasi optimal saat durasi penyinaran matahari rendah, sehingga menyebabkan kegagalan pengisian baterai dan menurunnya keandalan sistem penerangan. Kegiatan Pengabdian kepada Masyarakat ini bertujuan untuk mengoptimalkan pemanfaatan energi surya melalui penerapan teknologi SOLAR-SAT (Solar-powered Off-grid Lighting System with Auxiliary Resource – Switching Automation Technology), yaitu sistem kendali otomatis yang mampu mengalihkan sumber daya dari panel surya ke listrik PLN sebagai backup untuk mencegah undercharging dan degradasi baterai. Pengembangan dilakukan melalui relokasi komponen ke box panel outdoor, pemasangan baterai LiFePO4 12V 200Ah, penambahan modul PV, serta pembagian jaringan beban lampu. Hasil menunjukkan peningkatan keandalan penerangan selasar yang kini beroperasi tanpa kedip dan tetap menyala pada kondisi cuaca buruk. Kegiatan ini juga menghasilkan luaran berupa Hak Cipta alat peraga SOLAR-SAT. Implementasi ini dinilai efektif dan berpotensi direplikasi pada fasilitas sosial lain yang membutuhkan sumber energi alternatif yang berkelanjutan.
Co-Authors Afriyastuti Herawati Reza Satria Rinaldi Wagiasih Wagiasih