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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Advances in Applied Sciences TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal EECCIS Jurnal Informatika dan Teknik Elektro Terapan JURNAL PENGABDIAN KEPADA MASYARAKAT Science and Technology Indonesia Matrix : Jurnal Manajemen Teknologi dan Informatika Jurnal Teknoinfo JCRS (Journal of Community Research and Service) Jurnal Teori dan Aplikasi Fisika Journal of Engineering and Scientific Research (JESR) Journal of Applied Data Sciences TEKTAN Journal of Innovation and Technology Journal of Multidisciplinary Applied Natural Science Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung Electrician : Jurnal Rekayasa dan Teknologi Elektro Analit: Analytical and Environmental Chemistry SNTE Journal of Digital Market and Digital Currency Nemui Nyimah Analit: Analytical And Environmental Chemistry

Sri Ratna Sulistiyanti

[Scopus ID: 36606902600] Department Of Electrical Engineering Faculty Of Engineering University Of Lampung Jl. Sumantri Brojonegoro 1, Bandar Lampung

Author-ID : 2526216

Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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RANCANG BANGUN PROTOTYPE PENJEMUR PAKAIAN OTOMATIS BERBASIS MIKROKONTROLER ATMEGA8535 Eko Rismawan; Sri Ratna Sulistiyanti; Agus Trisanto
Jurnal Informatika dan Teknik Elektro Terapan (JITET) Vol 1, No 1 (2013)
Publisher : Universitas Lampung

Abstract Currently the application of sensors to facilitate human work is increasing. One is the use of rain sensors applied in clothes horse. Microcontroller will receive the signal from the sensor, and gave the command to the motor driver for DC motor command rotates left or right. DC motor rotation direction is determined by the direct orders of the Microcontroller. Microcontroller as the brain to rule, so in order not to rely on any of the DC motor running. Clothesline able to move as far as approximately 1.5 meters. The goal is to roll the rail motors clothesline, clothesline or clothes that do not become wet because of the rain. Once the clothes horse entered the microcontroller will tell the blower to live.Keywords : Rain Sensor, Motor Drivers, DC Motor

RANCANG BANGUN MODEL PROSES PENGISIAN AIR PADA TANGKI PLTU BERBASIS MIKROKONTROLER ATMEGA8535 Dedyk Erryyanto; Noer Sudjarwanto; Sri Ratna Sulistiyanti
Jurnal Informatika dan Teknik Elektro Terapan (JITET) Vol 5, No 1 (2017)
Publisher : Universitas Lampung

Model proses pengisian air pada tangki PLTU ini dibuat agar nantinya dapat digunakan untuk memudahkan mahasiswa dalam memahami prinsip kerja dari PLTU, khususnya proses pengisian air. Model proses pengisian air pada tangki PLTU ini menggunakan mikrokontroler ATmega8535 sebagai pengendali utamanya yang berfungsi untuk mengatur beberapa komponen yang terdapat pada alat ini seperti rangkaian switching dan penampil LCD. Selain itu mikrokontroler ATmega8535 juga berfungsi membaca nilai ADC yang diberikan oleh sensor tahanan geser. Rangkaian switching digunakan sebagai pemicu untuk menjalankan actuator sedangkan LCD digunakan untuk menampilkan pembacaan nilai ADC pada sensor. Kata Kunci : PLTU, Mikrokontroler ATmega8535, Rangkaian Switching dan LC

RANCANG BANGUN PROTOTIPE KANDANG KAMBING SISTEM TERKOLEKSI DAN PEMBERIAN PAKAN OTOMATIS BERBASIS ARDUINO UNO R3 Muhammad David; Sri Ratna Sulistiyanti; Herlinawati Herlinawati; Helmy Fitriawan
Jurnal Informatika dan Teknik Elektro Terapan (JITET) Vol 10, No 2 (2022)
Publisher : Universitas Lampung

Peternak kambing saat ini kurang diminati dalam sektor peternakan, dikarenakan kotoran kambing yang berbau dan hanya menghasilan penghasilan tahunan. Oleh karena itu salah satun inovasi untuk mengatasi masalah ini dengan membuat Kandang kambing sistem terkoleksi dan pemberian pakan otomatis berbasis Arduino Uno R3 yang mampu mengumpulkan dan memisahkan feses dengan urine serta memberikan pakan otomatis secara real time sesuai waktu yang ditentukan. Pada pukul 08.00 dan 16.00 WIB pemberian pakan akan diberikan pada ternak dengan menggerakkan motor servo untuk membuka katup penampungan pakan sehingga pakan akan jatuh pada sensor loadcell dan ditimbang dengan berat minimal 1 kg agar konveyor dapat bergerak menghantarkan pakan pada ternak. Bersamaan dengan pemberian pakan, konveyor kotoran juga akan bergerak untuk menghantarkan kotoran menuju penampungan kotoran. Alat penelitian ini dapat menampilkan data nilai waktu pemberian pakan dengan keberhasilan sebesar 99,95%, berat pakan dengan tingkat keberhasilan 65,97%, waktu hidupnya relay sebagai switching dari motor DC selama 3,6 detik , dan jarak laju konveryer sejauh 60 cm. secera keseluruhan tingkat keberhasilan alat sebesar 91,48% dengan nilai rata rata waktu pengoperasian alat sebesar 12,6 detik. Sehingga dapat dikatakan secara fungsional alat telah berfungsi dengan baik.

IMPLEMENTASI AUTOMATIC TRANSFER SWITCH BERBASIS PLC PADA LABORATORIUM TEKNIK ELEKTRONIKA JURUSAN TEKNIK ELEKTRO UNIVERSITAS LAMPUNG Hendro Utomo; Ageng Sadnowo; Sri Ratna Sulistiyanti
Jurnal Informatika dan Teknik Elektro Terapan Vol 2, No 2 (2014)
Publisher : Universitas Lampung

Abstrak Laboratorium Elektronika Jurusan Teknik Elektro Universitas Lampung merupakan tempat bagi para mahasiswa dalam melakukan studi, praktikum maupun penelitian dengan listrik sebagai kebutuhan utamanya. Tanpa listrik, kegiatan-kegiatan tersebut akan terhenti. Sebagaimana diketahui, listrik di Indonesia dilayani oleh Perusahaan Listrik Indonesia yang merupakan satu-satunya perusahaan terbesar yang menyediakan listrik untuk Indonesia. Sehingga ketika terjadi pemadaman akibat adanya perawatan, tidak ada suplai daya cadangan yang dapat melayani. Kalaupun ada, itu berupa genset yang melayani listrik secara terbatas. Selain itu perlu peran manusia dalam mengoperasikannya. Pengoperasian oleh manusia memiliki banyak kelemahan. Untuk itu, perlu adanya sebuah alat atau mekanisme yang dapat menggantikan kerja yang dilakukan secara manual oleh manusia menjadi otomatis. Automatic Transfer Switch (ATS) merupakan salah satu solusi pemecahan masalah ini. ATS ini akan menggantikan peran operator genset yang harus siaga saat terjadi pemadaman pada sumber utama listrik yaitu PLN. Pekerjaan yang digantikan oleh ATS dari operator di antaranya menyalakan genset saat terjadi pemadaman (starting genset), memantau kondisi operasi genset hingga normal dan siap menyuplai daya, memindahkan saklar beban utama dari sumber listrik PLN ke genset maupun sebaliknya serta mematikan genset saat sumber listrik PLN sudah kembali menyuplai daya. Kata kunci : Genset, PLN, Beban, ATS Abstract An Electronica’s Laboratory in Electrical Engineering University of Lampung is a place for students to study, practice and making some reasearch with an electricity power as the main requirment. Without electricity power, anyother activity will be stopped. As we know, Indonesian electricity supplied by Perusahaan Listrik Negara as the only one the largest electricity company in Indonesia. Then, when it stopping the services, there is no one can supplied back up electricity. Moreover, local generator can give the eletricity but it’s limited. But, when it’s running also need to controlling. So, we need some tools or mechanism that changing human work from manual to automatic. Automatic Transfer Switch (ATS) is one of the solution in this case. ATS can changing human work as a genset operator that have to standbye when electricity down from the main source, thats PLN. Some work should handled by ATS such as get local generator running when electricity was down (genset setarting), monitoring local generator till it’s get normally running and ready to supply the electricity, changing the main switch of load from PLN electricity source to localy generator or return and also get local generator running off when PLN come to supplied the electricity back. Keyword : local generator, PLN, load, ATS.

RERATA INTENSITAS WARNA TERPISAH UNTUK IDENTIFIKASI DAGING KAMBING, DAGING BABI, DAGING CELENG, DAN DAGING ANJING Afri Yudamson; Titin Yulianti; FX Arinto Setyawan; Sri Ratna Sulistiyanti
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 23, No 1 (2017): JANUARI - MARET
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v23i1.6634

AbstrakPaper ini memaparkan hasil penelitian untuk mengidentifikasi beberapa jenis daging menggunakan metode rerata intensitas warna terpisah. Sampel yang digunakan dalam penelitian ini adalah daging Anjing, daging Babi, daging Celeng, dan daging Kambing karena dengan kasat mata, beberapa jenis daging tersebut tampak serupa. Sampel-sampel tersebut ditangkap menggunakan kamera android. Kemudian setiap citra yang dihasilkan, disegmentasi untuk memisahkan citra daging dari latar belakangnya. Kemudian dihitung nilai persentase dari Red, Green, dan Blue. Hasil penelitian menunjukkan bahwa rentang nilai persentase Red dari 50,78% sampai 53,87% dapat menjadi ciri daging Anjing, rentang nilai persentase Green dari 29,11% sampai 31,43% dapat menjadi ciri daging Babi dan daging Celeng, dan rentang nilai persentase Blue dari 25,33% sampai 28,22% dapat menjadi ciri daging Kambing.Kata kunci: daging serupa, segmentasi citra, rerata intensitas warna terpisah, karakterisasi citra AbstractThis paper reports our research about identifying some kinds of meats using separate color intensity average. Samples used in this research are Dog meat, Pork, Boar meat, and Lambs because these types of meat seen similar in plain view. Those sample images were acquired by the android camera. Then each image was segmented to separate from the background. After that, the values of Red, Green, and Blue percentages were calculated. The results show that Red percentage range of 50.78% to 53.87% can be the characteristic of Dog meats, Green percentage range of 29.11% to 31.43% can be the characteristic of Pork and Boar meats, and Blue percentage range of 25.33% to 28.22% can be the characteristic of Lambs.Keywords: similar meat, segmented image, separate color intensity average, image characterization

PENGERINGAN LAPIS TIPIS (THIN LAYER DRYING/TLD) IKAN TERI BERBASIS TENAGA SURYA Sri Ratna Sulistiyanti; Mahrus Ali; Eko Efendi; Winarto Winarto
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 22, No 3 (2016)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v22i3.4766

Ikan teri (Stolephorus sp) merupakan sumberdaya alam yang melimpah di Indonesia. Seperti halnya produk ikanasin lainnya, mikroba merupakan faktor utama penyebab kerusakan dan menjadi permasalahan yang harusditanggulangi. Sebagian besar produsen ikan teri kering tidak memperhatikan cara penjemuran yang higienis.Oleh karena itu dibuat TLD yang mempunyai spesifikasi dimensi 4 m x 7,5 m, menggunakan dua sistem bloweryaitu turbin ventilator dan exhaust fan. Hasil pengeringan menggunakan TLD kadar air ikan teri 33,47%,kapasitas pengering 60kg. Selisih hasil pengeringan sebesar 40kg/hari, jika dalam satu bulan (20 hari kerja),maka selisihnya 800kg/bulan. Untuk harga netto ikan teri kering Rp 10.000,00/kg, maka dalam satu bulan terjadipeningkatan pendapatan sebesar Rp 8.000.000,00. Selain terdapat peningkatan pendapatan sebesar 100%,penggunaan TLD lebih higienis.

IMPLEMENTASI METODE PEMBOBOTAN BERBASIS ATURAN DAN METODE PROFILE MATCHING PADA SISTEM PAKAR MEDIS UNTUK PREDIKSI RISIKO HIPERTENSI Agus Wantoro; Admi Syarif; Khairun Nisa Berawi; Kurnia Muludi; Sri Ratna Sulistiyanti; Sutyarso Sutyarso
Jurnal Teknoinfo Vol 15, No 2 (2021): Juli
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jti.v15i2.1523

Cardiovascular is a disease that often causes death. One of the cardiovascular diseases that often cause death is the risk of Hipertensi. The highest risk factors for premature death and disability in the world are caused by smoking habits, high systolic blood pressure, and increased blood sugar levels. This death factor is because people with Hipertensi generally do not experience any symptoms until their blood pressure is too high which can cause death. Efforts that can be made are by utilizing information technology in the form of a medical expert system to Kelasify the risk of Hipertensi. This study aims to develop a medical expert system in a different way using rule-based weighting methods and profile matching. The weighting method is used to determine the risk weight based on patient variables, while the profile matching method is used to calculate the risk Kelasification based on the core factor and secondary factor variables on the risk of Hipertensi. System evaluation is carried out by comparing asset data taken from the Pima Indian Hipertensi Data (NHANES) with results from the system. The results of the comparison show that the accuracy of the proposed system is 96.67%. The proposed system is also compared with other Kelasification methods such as decision tree, Random Tree, Decision Stump, KNN, Naïve BaYa, Deep Learning, and Rule Induction. Based on the comparison results, the proposed system has a better level of accuracy, therefore the system developed can be used to Kelasify risks for other types of diseases.

Rancang Bangun Pengendali dan Pemantau Suhu pada Dua Inkubator Telur Ayam Otomatis Rudi Darmawan; Sri Ratna Sulistiyanti; Syaiful Alam
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 5 No 3 (2013)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v5i3.848

In this research, it was designed a temperature controller and monitoring system ofÂ two automatic chicken eggs incubator. Based on references, hatched chicken eggs require temperature 38oC-40oC and relative humidity about 55-65%. The temperature sensor used is LM 35 and humidity sensor used is DHT 11. Temperature controller uses microcontroller ATmega 328 P. The temperature is controlled by switching on/off method on incandescent bulbs used as heating tool and DC fan as cooling tool. Monitoring system uses a computer with LabVIEW software and LCD 16x2 for incubator. Wheel shelf of eggs will automatically rotate egg on 06.00 A.M. at 0o and 18.00 P.M. at 60o using servo motor. Communication used by two incubator to transmit data to computer is uses I2C method. LM35 temperature sensor is calibrated by using thermometer and the obtained error is 0.285714%, while DHT 11 humidity sensor is calibrated by Hygrometer and the obtained error is 1.5%. The result of system test shows that the average stability of temperature on incubator 1 and 2 is 39.01oC and the average humidity is 60%. Incubator monitoring system of temperature and humadity is displayed with real time usesÂ LabVIEW software.Â Keywords: eggs incubator, controlling, monitoring, temperature, ATmega 328P

Alat Identifikasi Jenis Daging dengan Pengolahan Citra Digital Menggunakan Python 2.7 dan OpenCV Berbasis Raspberry Pi 3 Sri Ratna Sulistiyanti; F.X. Arinto Setyawan; Kris Sivam; Sri Purwiyanti
Matrix : Jurnal Manajemen Teknologi dan Informatika Vol 9 No 2 (2019): MATRIX - Jurnal Manajemen Teknologi dan Informatika
Publisher : Unit Publikasi Ilmiah, P3M Politeknik Negeri Bali

Proses identifikasi jenis daging di masyarakat umum masih dilakukan dengan cara manual. Penelitian ini dapat mengidentifikasi jenis daging secara otomatis dengan teknologi pengolahan citra digital. Proses pengolahan citra daging dilakukan pada mikrokomputer Raspberry Pi 3 menggunakan perangkat lunak Python 2.7 dan didukung dengan library OpenCV, sedangkan untuk pengambilan citra dengan menggunakan Raspberry Pi Camera Module V2. Proses identifikasi jenis daging menggunakan nilai presentase komponen warna RGB dan hasilnya akan ditampilkan pada LCD. Hasil penelitian ini memperoleh nilai presentase komponen warna Red (R) untuk daging babi 42,35 – 44,12 persen, daging celeng 45,21 – 48,87 persen, daging sapi 44,03 – 45,76 persen, daging kambing 45,08 – 46,60 persen. Nilai komponen warna Green (G) untuk daging babi 28,43 – 29,13 persen, daging celeng 24,71 – 26,54 persen, daging sapi 26,34 – 27,15 persen, daging kambing 27,05 – 27,75 persen. Nilai persentase komponen warna Blue (B) untuk daging babi 27,41 – 28,55 persen, daging celeng 26,39 – 28,27 persen, daging sapi 27,86 – 28,87 persen, daging kambing 26,31 – 27,21 persen.

Electrochemical Performance of Galvanic Cell with Silver Coated Cathode in One Compartment System Using Seawater as Electrolyte Gurum Ahmad Pauzi; Ahmad Saudi Samosir; Sri Ratna Sulistiyanti; Wasinton Simanjuntak
Science and Technology Indonesia Vol. 8 No. 1 (2023): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.1.25-31

This research was carried out to evaluate the electrochemical performance of a galvanic cell using seawater as an electrolyte. The cell was designed to have a volume of 200 mL and equipped with Zn as an anode and Ag-coated Cu as a cathode (Cu(Ag)-Zn system) in order to suppress the corrosion of Cu. As a comparison, the same experiment with the use of uncoated Cu as a cathode (Cu-Zn system) was also conducted. To conduct the experiment, a system was assembled by connecting 20 cells in series and placed in a closed container filled with seawater. The experiment was run for 72 hours, divided into three 24-hour cycles, by replacing the seawater every 24 hours. The performance of the system was evaluated in terms of open circuit voltage, close circuit voltage, current, light intensity, internal resistance, and power. The experimental results show that the corrosion rate of Cu coated with silver was smaller than that of uncoated Cu. Compared to the performance of the Cu-Zn system, it was also found that the Cu(Ag)-Zn system produced higher power and light intensity, which is in accordance with its smaller internal resistance. The overall experimental results indicate better performance of Cu(Ag)-Zn system and this better performance is attributed to the significantly lower corrosion rate of Cu(Ag) cathode which signifies the role of Ag layer to protect the Cu from attack by seawater. As a result, the Cu(Ag)-Zn system maintained the cathode corrosion rate with a ratio of 0.19. The percentage decrease of the OCV of the Cu(Ag)-Zn system was 6.14%, the CCV on the third day was 0.99%, the current was 36.68%, and the power was 37.83%.

Co-Authors A S Samosir Achmad Yahya Teguh Panuju Adi Saputra Admi Syarif Afri Yudamson Afri Yudamson Ageng Sadnowo Ageng Sadnowo Repelianto Agus Trisanto Agus Wantoro Ahmad Pauzi, Gurum Ahmad Saudi Samosir Ahmad Saudi Samosir Ainita, Okta Anjarwati, Arie Arie Anjarwati Arie Setya Putra Arief, Khollaqul Dedyk Erryyanto dhika, eduar Dyah Indriana Kusumastuti Eko Efendi Eko Rismawan Endro Prasetyo Wahono F.X. Arinto F.X. Arinto Setyawan Ferika Shaumi, Rahma Fitria Yunita Fitriwan, Helmy Frisky Volino Andreas Gurum Ahmad Pauzi Gurum Ahmad Pauzi Gusri Akhyar Ibrahim Haris Murwadi Helmy Fitriawan Helmy Fitriawan Hendro Utomo Herlinawati -, Herlinawati Herlinawati Herlinawati Herlinawati Herlinawati Herri Gusmedi Herti Utami Herti Utami Junaidi Junaidi Khairudin Khairudin Khairun Nisa Khollaqul Arief Komalasari, Agrianti Komarudin, M. Kris Sivam Kurnia Muludi Kurniawan, Dendi Luh Putu Ratna Sundari Lukita, Jimmy M Jerry Juliandr Suja M Said Hasibuan M Yusuf Tamtomi M. Dyan Susila Madi Hartono Mahfut Mardiana Mardiana Mardiyah, Luthfiyyatun Marjunus, Roniyus Meizano Ardhi Muhammad Minhajjul Abidin Jaya Muhamad Komarudin Muhamad Komarudin Muhamad Komarudin Muhammad David Muhammad Ifan Saputra Muthia, Tiya Nadia Muthiati Nisa, Mia Abi Noer Sudjarwanto Nurul Hudayani Pami Ruli Setiawan Pauzi, Gurum Ahmad Rahmat, Rafli Dwi Rakhmat, Riko Ranny Dwidayanti Riza Muhida Rudi Darmawan Setyawan, F X Arinto Setyawan, FX Arinto Sony Ferbangkara Sri Purwiyanti Sri Purwiyanti Sri Purwiyanti Sri Wahyu Suciyati Sumadi Sumadi SUMADI SUMADI Surtono, Arif Suryadiwansa Harun Sutyarso Sutyarso Syafriadi Syafriadi Syaiful Alam Syaiful Alam Syaiful Alam Titin Yulianti Tiya Muthia Tiya Muthia Trismahargyono Trismahargyono ubaidah ubaidah Ubaidah, Ubaidah Umi Murdika Wahyu Eko Sulistiono Warsito Warsito Warsono Warsono Wasinton Simanjuntak Wasinton Simanjuntak Wasinton Simanjuntak Wijaya, Agung Kusuma Winanti, Diki Danar Tri Winarto Winarto Y E Putra Yanti Yulianti Yogi Aldino Yudi Eka Putra Yudi Eka Putra Yuli Darni Yuli Darni Yuli Darni

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