Process of maintaining hydroponic wick system manually requires extra energy, especially during the cherry tomato plant breeding season. Parameters, including pH value, Electrical Conductivity (EC) nutrient solution, room temperature, and humidity are needed to be considered to produce superior seeds. In this study, room temperature and humidity, pH value, and EC content in nutrient solution were controlled. The PID and on/off controller were employed in the examination plant. The PID was applied to control room temperature. On the other hand, the on/off was applied to control room humidity, pH, and EC value. PID parameters were set to Kp = 3, Ki = 2, and Kd = 10. As a result, the system produced rise time of 60 minutes, overshoot of 1.17%, and settling time of 57.5 minutes. At the same time, the on/off controller was able to settle the humidity from 61% to 80% within 150 seconds. Moreover, reduction of the pH value from 6.9 to 5.34 can be reached within 12.8 minutes. The study of the EC showed that the longer for the water valve to open, the longer it takes to reach the set point. The study also showed that the rate of cherry tomato plant height is 2.675 cm/week utilizing both of the PID and the on/off controller, while it can only reach 0.2 cm/week without controller. Furthermore, examination on the leaf numbers per week showed that the leaf grew 2 sheets per week when both controllers were applied, while it grew no sheet without controller. Intisari-Proses pemeliharaan sistem hidroponik wick secara manual membutuhkan tenaga ekstra, terutama pada masa pembibitan tanaman tomat ceri. Untuk menghasilkan bibit yang unggul, faktor yang harus dipenuhi antara lain nilai pH, Electrical Conductivity (EC) larutan nutrisi, temperatur, dan kelembaban udara. Makalah ini mengendalikan temperatur dan kelembaban ruangan, serta kandungan pH dan EC pada larutan nutrisi. Sistem pengendalian pada makalah ini menggunakan metode PID dan on/off. Metode PID diterapkan pada pengendalian temperatur, sedangkan metode on/off diterapkan pada pengendalian kelembaban, pH, dan EC. Metode PID pada pengendalian temperatur menggunakan parameter Kp, Ki, dan Kd sebesar berturut-turut 3, 2, dan 10 yang menghasilkan rise time sebesar 60 menit, overshoot sebesar 1,17%, serta settling time sebesar 57,5 menit. Hasil pengaturan kelembaban dengan metode on/off dapat mencapai nilai set point 80% selama 150 detik, sedangkan hasil pengujian pH menunjukkan respons waktu dari nilai awal pH 6,9 menjadi nilai pH 5,34 adalah selama 12,8 menit. Hasil pengujian EC menunjukkan bahwa semakin lama katup air membuka, semakin lama waktu yang dibutuhkan untuk mencapai set point. Data hasil pertumbuhan tanaman menunjukkan bahwa laju ketinggian tanaman tomat ceri dengan pengendalian sebesar 2,675 cm/minggu, sedangkan tanpa pengendalian adalah 0,2 cm/minggu. Pada hasil pencatatan jumlah daun per minggu, jumlah daun dengan pengendalian sebanyak dua lembar, sedangkan tanpa pengendalian sebanyak 0 lembar. Kata Kunci-hidroponik, sistem wick, pembibitan tomat ceri, EC, pH, temp...
Abstract-Some factors that arise from difficulties in identifying in detail the cardiac signal can lead to heart disease diagnosis process becomes biased. For example, diagnosis process is strongly influenced by the subjectivity of the doctor, this is primarily due to exposure of patient chest area during the process of measurement. One solution to cope with this problem can be done by allocating doctors and patients in separate rooms. Hence, this was the main motivation of our work. In this paper, we examine the use of a wireless tele-auscultation system for transmitting and recording phonocardiograph signal. The data is transmitted through the Zigbee-like (called the Xbee) networks in local area networks. Based on the study, it is shown that the Type A loss can be omitted without affecting the validity of the received signal as long as time length of measurement is longer than the transmission delay. In terms of the Type B loss, it can be argued that the transmission process is considered as valid, i.e. even though there are loss packets, the number of the loss packets is not significant. In addition to that, it can be observed that variation of the sampling period and the serial interface data rate do not contribute well to the improvement of the throughput the streaming heart sound signal transmission. The throughput of the system is probably influenced by the surrounding environment and hardware or memory capability of the Xbee.
Olahraga merupakan salah satu aktifitas rutinyang dilakukan oleh masyrakat, seperti olahraga yang melatih kardio atau denyut jantung. Kategori olahraga yang mudah dilakukan oleh masyarakat adalah olahraga lari, yang tidak membutuhkan teknik yang rumit dan tidak butuh biaya mahal untuk melakukannya. Aktifitas lari ini sangat mempengaruhi kondisi jantung, khususnya bagi pelari pemula dan atlit lari. Jika Olahraga ini, tidak dipantau dengan baik oleh Pelatih atau Personal Trainer, maka mengakibatkan kematian. Sistem Monitoring yang mengintegrasikan hardware dengan software diterapkan untuk memudahkan proses monitoring. Pantauan yang dilakukan untik nilai THR (Target Heart Rate) dengan menerapkan metode Karvonen. Integrasi hardware yang meliputi sensor Grove Finger ClipHeart Rate, Modul Transmisi Wireless (Modul ESP 8266) , dan Arduino. Performansi 0,6% untuk tingkat kesalahan sensor dan kemampuan transmisi data dengan paket loss < 1% untuk modul ESP . Hardware Monitoring tersebut terintegrasi baik dengan aplikasi monitoring lewat jaringan lokal dan akses web lewat jaringan internet.
ABSTRAKSaat ini, kecerdasan buatan memungkinkan untuk dikembangkan dalam dunia robotika, khususnya untuk pengaturan gerakan robot berdasarkan pengolahan citra. Penelitian ini mengembangkan sebuah mobile robot yang dilengkapi dengan kamera katadioptrik dengan sudut pandang 3600. Citra yang didapatkan, dikonversi dari RGB menjadi HSV. Selanjutnya disesuaikan dengan proses morfologi. Nilai jarak yang terbaca oleh kamera (piksel) dengan jarak sebenarnya (cm) dihitung menggunakan Euclidean Distance. Nilai ini sebagai ekstraksi ciri data jarak yang dilatihkan pada sistem. Sistem yang dibuat pada penelitian ini memiliki iterasi sebanyak 1.000.000, dengan tingkat kelinieran R2=0.9982 dan keakuratan prediksi sebesar 99,03%.Kata kunci: Robot, HSV, Euclidean Distance, Kamera katadioptrik, Artifical Neural NetworkABSTRACTRecently, artificial intelligence is possible to be developed in robotic, specifically for robot movements control based on image processing. This research develops a mobile robot with a 3600 perspective catadioptric camera is equipped. The camera captured images were converting from RGB to HSV. Furthermore, it adapted to the morphological process. The distance value read by the camera (pixels) to the actual distance (cm) is measured using Euclidean Distance. This value is a feature extraction of distance data that has training on the system. The system built in this study has 1,000,000 iterations, with a linearity level of R2 = 0.9982 and prediction accuracy of 99.03%.Keywords: Robot, HSV, Euclidean Distance, Catadioptric Camera, Artifical Neural Network
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