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Rusmi Ambarwati
Jurusan Teknik Elektro Fakultas Teknik Universitas Brawijaya
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DESAIN SISTEM COLD STORAGE CONTROL PADA PENYIMPANAN BUAH DAN SAYUR PASCAPANEN BERBASIS LOGIKA FUZZY UNTUK OPTIMALISASI SUHU DAN KELEMBAPAN Wibowo, Rafli Prihantono Putra; Rusli, Moch.; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
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Post-harvest handling is one of the strategies to support food security in Indonesia. This handling is necessary because harvestedproducts, such as various types of leafy and fruit vegetables, have different shelf lives (Arista, 2021). Additionally, damage to harvested products occurs more quickly if handling during or after harvesting is poor. Therefore, the storage of post-harvest products requires a cooling container to maintain the quality of the harvested goods. To ensure ideal storage conditions for items that need specific conditions, a cold storage control system is a strategic step to enhance operational performance and reduce product losses due to damage during storage. To ensure food quality and safety, the cold storage parameters that need to be controlled are temperature, humidity, and air quality (Mohammed et al., 2022).This study was conducted to explain the process of controlling temperature and relative humidity in a cold storage using a fuzzylogic controller. In the control process, it was found that the chiller system has a steady state time of 4000 s or 66 minutes and 40 seconds with a steady state error of 1.63%. When disturbed, the recovery time obtained is 1,074 s (17.9 minutes) with the steady state error increasing to 2.7%. Meanwhile, the freezer system has a steady state time of 3,774 s or 62 minutes and 54 seconds, no overshoot, and no steady state error. However, when disturbed, the freezer system will have a steady state error of <1% with a recovery time of 1,094 s or 18.2 minutes. For the humidity control system, to reach 90% RH, it takes 1,950 s or 32 minutes and 30 seconds with no steady state error. However, the humidity system graph has an overshoot of 5%. When the humidity system is disturbed, the recovery time (rt) is 200 s or 3.3 minutes. However, after the disturbance, a steady state error of 0.4% is obtained. Keywords: Cold Storage Control, Temperature and humidity control, Fuzzy Logic Controller
IMPLEMENTASI HOTSPOT SERVER DAN MANAJEMEN BANDWIDTH DENGAN TP-LINK WR840N PADA JARINGAN HOTSPOT DI PASAR WISATA KEPUHARJO KABUPATEN MALANG Sari, Suci Permata; Kusmaryanto, Sigit; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 12 No. 5 (2024)
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Pasar wisata merupakan salah satu tempat yang sering dikunjungi wisatawan lokal maupun mancanegara. Akses internetnirkabel atau Wi-Fi merupakan fasilitas penting yang diharapkan oleh pengunjung dan pedagang. Pasar Wisata KepuharjoKabupaten Malang bukanlah segalanya. Internet memungkinkan pemasaran digital bagi pelaku industri dan dapat menarik minat wisatawan sehingga menghasilkan pertumbuhan jumlah kunjungan yang signifikan. Namun pengelolaan jaringan hotspot akhirnya mampu memecahkan tantangan tersebut, terutama dalam hal efisiensi pengelolaan bandwidth. Penelitian ini menjawabtantangan tersebut dengan menyelidiki implementasi server hotspot dengan manajemen bandwidth menggunakan Router untukmeningkatkan pengalaman pengguna, efisiensi sumber daya, dan pengembangan pariwisata lokal. Hasil penelitian ini menunjukkan bahwa manajemen bandwidth menjamin akses internet yang stabil dan merata bagi pengunjung dan pedagang di pasar wisata. Pengujian menggunakan software Network cell info lite diperoleh kecepatan download terendah 5300 Kbps dan tertinggi 9200 Kbps, upload terendah 1000 Kbps dan tertinggi 3100 Kbps, serta RSSI terendah -28 dBm dan tertinggi -54 dBm. Pengujian menggunakan software Wireshark diperoleh throughput terendah sebesar 6123.7 Kbps, throughput tertinggi sebesar 11410.8 Kbps, delay terendah sebesar 0.691 ms, delay tertinggi sebesar 1.282 ms, dan packet loss sebesar 0.1%. Kata Kunci : Jaringan Hotspot, WISP, Manajemen Bandwidth, Antrian Sederhana, Kinerja Jaringan
PERANCANGAN SISTEM SMART HOME MENGGUNAKAN BLYNK DAN WEMOS D1 MINI Mifta, Gigih Rizqy Ramadhan Ahnaf; Mustofa, Ali; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 13 No. 5 (2025)
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Perkembangan teknologi yang pesat mendorong terciptanya sistem smart home yang dapat meningkatkan kenyamanan danefisiensi penggunaan peralatan rumah tangga. Penelitian ini bertujuan untuk merancang sistem smart home berbasis Internetof Things (IoT) dengan menggunakan microcontroller Wemos D1 Mini yang dapat dikontrol secara otomatis maupun manualmelalui aplikasi Blynk dan web browser. Sistem ini dirancang untuk mengendalikan perangkat seperti lampu, kipas angin,pintu rumah, dan pagar otomatis dengan memanfaatkan sensor jarak dan suhu sebagai parameter kendali. Metode penelitianmencakup perancangan perangkat keras dan lunak, serta pengujian fungsional pada komponen utama seperti motor servo,relay, dan power supply. Hasil pengujian menunjukkan bahwa sistem berhasil menjalankan perintah secara otomatis sepertimembuka pagar saat sensor mendeteksi objek, menyalakan lampu jika ruangan gelap, serta mengaktifkan kipas angin.Sistem ini juga memungkinkan pengguna memantau dan mengontrol perangkat dari jarak jauh. Penelitian ini membuktikanbahwa IoT dalam sistem smarthome sangat bermanfaat dan efisien dikarenakan dapat mempermudah pengguna ataupenghuni rumah untuk mengontrol perangkat rumah tangga hanya dengan membuka blynk, pengujian ini jugamempermudah pengguna untuk mengontrol perangkat rumah dengan efektif untuk meningkatkan kenyamanan, keamanan,serta efisiensi energi di lingkungan rumah tinggal. Meskipun sistem smart home yang telah dirancang dalam penelitian inimenunjukkan hasil yang cukup baik, masih terdapat beberapa kekurangan yang perlu diperhatikan untuk pengembanganselanjutnya. Sistem ini sangat bergantung pada koneksi internet, sehingga disarankan bagi pengguna yang berada di wilayahterpencil untuk menggunakan provider dengan kualitas jaringan yang stabil dan cepat agar sistem dapat berjalan denganoptimal. Selain itu, untuk meningkatkan cakupan kontrol, diperlukan penambahan beberapa komponen seperti motor servoguna mengoperasikan perangkat-perangkat rumah tangga yang tidak berbasis energi listrik. Dengan pengembangan lebihlanjut, sistem smart home ini diharapkan dapat menjadi solusi yang lebih cerdas, efisien, dan bermanfaat dalam kehidupansehari-hari.Kata kunci : Wemos D1 Mini, Blynk, Smart home, Internet of Things
PENGENDALIAN TINGKAT KEASAMAN AIR HABITAT IKAN AIR TAWAR BERBASIS ARDUINO Khalid, Alifian Caesar; Siswojo, Bambang; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 13 No. 5 (2025)
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Penelitian ini membahas perancangan dan implementasi sistem otomatis untuk mengendalikantingkat keasaman (pH) air dalam habitat ikan air tawar menggunakan mikrokontroler Arduino Uno danlogika fuzzy. Sistem ini memanfaatkan sensor pH PH4502C untuk memantau keasaman air dan sensorTDS SEN0244 untuk mengukur jumlah zat terlarut (TDS) sebagai indikator buffer capacity air.Berdasarkan data sensor, sistem akan mengatur pompa peristaltik yang menambahkan larutan asam (cuka0,05 M) atau basa (natrium bikarbonat 0,05 M) ke dalam habitat ikan. Logika fuzzy Mamdani digunakanuntuk menentukan durasi pengaktifan pompa berdasarkan nilai error pH dan TDS. Pengujian dilakukanuntuk mengkalibrasi sensor, menguji larutan, serta mengevaluasi performa pengendalian fuzzy dalammencapai setpoint pH optimal (antara 6,8–7,2). Hasil pengujian menunjukkan bahwa sistem mampumenjaga pH dalam rentang ideal secara otomatis, dengan respons yang adaptif terhadap kondisi air yangbervariasi.Kata kunci: pH, Ikan Air Tawar, Arduino Uno, Logika Fuzzy, TDS, Otomatisasi, Habitat Ikan
RANCANG BANGUN ALAT TERAPI TEMPOROMANDIBULAR DISORDER MENGGUNAKAN METODE TRANSCUTANEOUS ELECTRICAL NERVES STIMULATION (TENS) BERBASIS TELEDENTISTRY TERINTEGRASI INTERNET OF THINGS (IoT) Kusuma, Rizki Bagus Hadi; Nurussa’adah, n/a; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 13 No. 1 (2025)
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A disease characterized by craniofacial pain involving the joints, masticatory muscles, or muscles that innervate the head and neck is temporomandibular disorder (TMD). TMD is a major cause of pain in the orofacial region that is non-dental in nature. One of the factors causing TMD is hyperactivity of the muscles around the face. TMD often comes on suddenly, resulting in a decrease in the patient's quality of life, as it significantly interferes with the patient's ability to perform daily tasks such as eating, speaking, or yawning. An existing tool is Transcutaneous Electrical Nerve Stimulation (TENS) as one of the effective non-invasive, non-drug physical therapy techniques for the treatment of TMD. However, there are problems experienced at this time TENS has not been able to provide spontaneous and longterm therapy equipped with a monitoring application for the doctor in charge, so that its use remains under the supervision of a doctor. Through these problems, a technology is needed using the TENS method non-invasively accompanied by an Internet of Things (IoT) integrated doctor monitoring application. This innovation has been tested the functionality of the tool to determine the performance of the tool. In the output test, the percentage error and standard deviation of frequency 0.19% and 0.391 and voltage 0.075% and 0.1268 were obtained. TENS therapy testing results in a decrease in pain of 58%. The test results of internet data transmission of two different Access Point Bands with an average delivery time of 1.98 and 1.7 seconds.Keywords : temporomandibular disorder, TENS, Non-Invasive, Internet of Things
RANCANG BANGUN ALAT MONITORING TEMPOROMANDIBULAR DISORDER BERSIFAT NON-INVASIVE MENGGUNAKAN SENSOR ELEKTROMIOGRAFI (EMG) DILENGKAPI APLIKASI PEMANTAUAN PADA SMARTPHONE Akbar, Handal Wally; Nurussa’adah, n/a; Ambarwati, Rusmi
Jurnal Mahasiswa TEUB Vol. 13 No. 1 (2025)
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Abstract

Temporomandibular disorders (TMD) are characterized by craniofacial pain involving the joints, masticatory muscles, or muscles that innervate the head and neck. TMD can significantly reduce a person's quality of life such as eating and speaking, as well as affect the growth and development of the jaw and face. The main goals of TMD patient management are to reduce pain, reduce functional and parafunctional activities that cause abnormalities, and improve normal function. However, the lack of non invasive tools to measure the condition of muscle activity that parameterizes the severity of TMD is still a problem that exists today. Through this problem, a technology is needed that can monitor masseter and temporalis muscle activity by utilizing Electromyography sensors that can be connected to a monitoring application. The required technology can also provide classification of TMD severity conditions of patients using the asymmetry index method. This innovation has tested the functionality of the tool which is compared with the doctor's diagnosis. The results of data transmission tests via the internet with two different Access Point Bands were obtained with an average delivery time of 1.73 and 1.99 seconds. In testing the classification of conditions using the application obtained an accuracy rate of 100%. Testing the classification of conditions using the asymmetry index resulted in an accuracy rate of 86.67% by testing fifteen patients who have been diagnosed with TMD by doctors and normal patients.Keywords: Temporomandibular Disorder, Electromyography, Monitoring, Asymmetry index, Noninvasive
Co-Authors Akbar, Handal Wally Ali Mustofa Erni Yudaningtyas Khalid, Alifian Caesar Kusuma, Rizki Bagus Hadi Mifta, Gigih Rizqy Ramadhan Ahnaf Nurussa’adah, n/a Rabbani, Muhammad Rusli, Moch. Sigit Kusmaryanto, Sigit Siswojo, Bambang Suci Permata Sari Wibowo, Rafli Prihantono Putra