An incubator room is designed to keep the temperature warm so that the baby feels comfortable. A temperature monitor system for the incubator room placed separately from where the officer works is a hassle and a waste of time. The research aimed to design a temperature detector for an infant incubator that had a constant temperature and was monitored directly in a staff room. An LM35 sensor as a temperature detector was used in the design and installed in a 100 x 80 cm room. The detected temperature was displayed on the LCD and computer in the staff room. The temperature (°C) was converted into an ADC (Analog Digital to Converter) value by an Arduino Uno microcontroller. Several LM35 sensors were mounted in rooms to detect the temperature. The LM 35 sensor was used by considering that it could be calibrated directly in the Celsius scale, a linear scale factor of 10mV/°C, and it had a temperature range between -55°C and 150°C.
The research investigated the automatic control system implemented with the 5 DOF (Degree of Freedom) arm robot control system using the closed-loop control method with the MPU 6050 sensor, which integrated the rotation of the MG995 motor servo as a feedback function. The control of this robot used android-based application, in which the app sends data of the rotate angle for each servo motor rotated to a certain angle. The HC -05 Bluetooth received the data and the Arduino UNO R3 microcontroller processed them. The microcontroller managed every rotation of each servo motor that integrated with an MPU6050 sensor with serial monitor communication to display the rotation of each servo motor. The test results obtained by the standard deviation value showed how large the sample diversity was. The result of this study showed a standard deviation correlation with the number of sample diversity. The higher the standard deviation value, the more sample data spread (data diverse or varies). Otherwise, the smaller the standard deviation value, the more homogenous the sample data. If the standard deviation equals zero, it indicates that the sample has identical data. The highest standard deviation value from servo motor 1 is 5.20, servo motor 2 and 3 are 1.00, servo motor 4 is 2.89, and servo motor 5 is 2.9.
Body health is the most important thing for human life. The heart is one of the organs of the body that is very important for humans. The heart functions to regulate the circulation of oxygen-rich blood and to carry leftover food in the body. Heart rate illustrates how hard the heart works. The heart rate needs to be monitored to find out the patient's condition. BPM measurement and temperature is an activity of measuring heart rate and body temperature. The patient's body temperature affects the patient's rapid heart to pump blood throughout the body. The study aims to design a heart rate and body temperature measuring device using an infrared LED as a transmitter and a photodiode as a receiver, an LM35 as the temperature sensor, and an LCD to display the final output. This tool uses an ATMega8 microcontroller as the controlling system. The device was completed with data storage and temperature indicators. The result of the test on the device showed that the device performed very well in measuring the heart rate and body temperature of adult patients aged 20 until 40 years old.
In everyday life, particularly in hospitals, people typically use cloth or tissue to dry our hands. It seems less practical, effective and hygienic. In addition, some restaurants still use cloth or tissue as well. To overcome this problem, several hospitals and restaurants have provided hand dryers. It can dry hands but cannot eliminate germs or bacteria. It is necessary to create a hand dryer equipped with a sterilizer. This work, therefore, created a hand dryer that can simultaneously dry and sterilize hands that worked automatically using the ATMega8 microcontroller. The tool was designed by using an infrared sensor to detect hands, and an ATMEGA8 microcontroller to read and process the sensors to activate UV and heating. The results found that the tool equipped with UV and heating can dry hands while eliminating bacteria and germs.
Sistem kelistrikan pada kapal merupakan bagian yang sangat penting dalam operasional kapal. Perancangan sistem kelistrikan yang tepat akan memudahkan pekerja untuk mengerjakan instalsi dan pengecekan di lapangan. Untuk memenuhi kebutuhan listrik, dewasa ini sektor maritim terutama bidang perkapalan menggunakan sistem pembangkit listrik dengan diesel untuk memenuhi kebutuhan daya pada kapal. Daya listrik yang dihasilkan oleh diesel ini harus bisa memenuhi kebutuhan beban listrik pada kapal sehingga perlu di hitung agar memudahkan pemilihan kapasitas diesel untuk memenuhi kebutuhan semua beban listrik kapal. Dalam tugas akhir ini, difokuskan pada studi pemilihan kapasitas generator, pengaman, dan luas penampang kabel hantaran. Pemilihan kapasitas pengaman dan luas penampang kabel hantaran ditentukan berdasarkan besarnya nilai arus nominal beban yang disesuikan dengan Standar PUIL 2000. Berdasarkan perhitungan load factor generator dengan kapasitas generator sebesar 13kVA untuk memenuhi kebutuhan beban maximum pada kapal Ikan 15 GT mencapai 77 %. Sistem transmisi tenaga listrik dari sumber AC menuju titik beban menggunakan jenis kabel NYY 3x25mm2 sedangkan pengaman pusat menggunakan rating MCB 1P 63A. Kata Kunci: kapasitas generator, kapasitas pengaman, luas penampang kabel.
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