http://repository.president.ac.id/xmlui/handle/123456789/8780 2026-04-07T23:18:10Z http://repository.president.ac.id/xmlui/handle/123456789/9002 Studi Tentang Pengaruh Temperatur Sambungan Terhadap Intensitas Cahaya Pada Lampu LED Serial NL500 Santoso, Fajar Heru Kebutuhan pencahayaan di tambang batubara adalah vital untuk proses produksi. Adanya masalah sejumlah lampu Led yang mati di area tambang merupakan tantangan bagi PT Nobi Putra Angkasa untuk melakukan inovasi unit lampu LED berdaya besar. Penulis adalah praktisi sebagai kepala bagian produksi di perusahaan itu yang merupakan manufaktur lokal yang mengembangkan inovasi dari Lampu PJU ke lampu tambang dengan standar SNI yang sudah menembus pasar di perusahaan tambang besar. Setelah dilakukan pemeriksaan secara visual pada lampu LED yang mengalami kerusakan adanya indikasi kelebihan panas. Pengujian berbagai tipe lampu LED untuk mengetahui pengaruh kenaikan temperatur sambungan (junction temperature) terhadap penurunan intensitas cahaya. Pengujian dilakukan dengan menggunakan 4 sampel lampu NL500A, NL500B, NL500C, NL500D. Untuk waktu pengujian dilakukan per 15 menit sampai menemukan data yang stabil pada menit ke 180 .Hasilnya pengujian pada lampu adalah temperatur sambungan NL500A = 80.76°C., NL500B = 90.98°C., NL500C = 71.32°C., NL500D = 75.31°C. dari hasil tersebut bahwa memenuhi standar datasheet pabrikan LED maksimum 150°C. Metoda kesimpulan ini adalah korelasi panas yang ditimbulkan dan panas yang dibuang melalui sirip. Lampu LED NL500 A, C dan D adalah manufaktur internal perusahaan menggunakan mesin SMT, sedangkan NL 500B produk import. Lampu NL 500D menggunakan LED Nichia 149 dengan efikasi 133,64 Lumen/ watt dari hasil uji Fotometri metoda IES 79-08. Pengukuran junction temperature (Tj) NL500C paling baik untuk transfer panasnya sehingga nilai Tj nya paling kecil dengan nilai rata-rata 58,52°C karena resistance thermal = 0.9 °C/Watt. Lampu LED NL500D unggul di intensitas cahaya dengan nilai rata-rata 3794,16 lux. 2021-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/9000 INTEGRATED SENSOR FOR GAS POLLUTANTS MONITORING SYSTEM IN JABABEKA INDUSTRIAL ESTATE Chiu, Enndi Industrial area is a good place to produce, distribute, and helping the economic growth in nation. In general, factories are using trucks to deliver goods for the consumer. However, due to massive transportation passing by, air quality got affected continuously and got worsen. Hence, it is necessary to monitor the the level of gas pollutants that can endanger the human respiratory system. This work presents the integrated sensor consists of Arduino Uno and Raspberry Pi 1 Model B+ that can monitor 3 different parameters such as CO, CO2, and NH3 in industrial area in Lippo Cikarang. For monitoring system, the author uses Node-RED for implementing the internet of things system. For gas sensor, author uses MQ-135 air quality sensor to detect 3 parameters with calibration and graph converting in order to monitor the gas pollutants level. The main goal of this work is to contribute data for the Jababeka Industrial Area. The experiment has been successfully done where table and graph are shown to be analyzed and summarized. Result of the measurement is compared with environmental air quality standard. The average level of ppm in industrial area for CO2 is 30 ppm, for NH3 is 28.9 ppm, and for CO is 27.08 ppm. Also, The average level of ppm in residential area for CO2 is 21.32 ppm, for NH3 is 19.3 ppm, and for CO is 20.93 ppm. 2021-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/8997 IOT BASED SINGLE AXIS SOLAR TRACKING SYSTEM WITH PANEL CLEANER NOTIFICATION AND DATA LOGGING USING ESP32 AND ANDROID APPLICATION Saputra, Yogi ABSTRACT Environmentally friendly green energy is very much needed for the potential survival of the Planet. Global warming and loss of the ozone layer allow the temperature of the planet to increase and it is an ideal condition for solar panels as renewable energy. The dynamic solar panel is a type of solar panel fitted with two light-dependent resistor sensors so that the path of sunlight can be followed. This invention is very useful for maximizing the conversion of sunlight into electricity. In this final project, solar tracker has three excellent features. The first is to track real-time data daily displayed in the solar tracker android application and back up files on the Micro SD. Second, a reminder of the cleanliness of solar panels via android. This functionality uses a light-dependent resistor (LDR) sensor, an ambient temperature sensor, and a voltage sensor. Third, detecting ambient temperature around solar panel. The solar panels used are four solar panels with a 5 V and 200 mA capacity in pair. The prototype compared to static solar panels in six days trial. The first day differences between static and dynamic output voltage reach 4.05%, second day 9.62%, third day 9.68%, fourth day 6.56%, fifth day 8.77%, and last day 12.86%. 2021-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/8926 A Smart Glove Detection for Visually Impaired: Implementation of Ultrasonic and Flame Sensor Prasetya, Bintang Ramadhan The number of cases of blindness in Indonesia is very high. Almost 3.6 million blind people in Indonesia and 70% are having cataracts and the rest are blind due to several cases, such as an abnormality during pregnancy, a fatal accident, or a health problem that causes blindness. Furthermore, the author is very motivated to make a development which definitely aims to minimize something unwanted and unpredictable particularly for blind people. This project focused on the threat of fires that can occur at any time by conducting a smart glove that not only aims to detect distances or obstacles in front of the person, but the author will add several supporting components which of course can be used to detects if a fire occurs and can be immediately notified to the family. A smart glove uses Ultrasonic mode for helping the visual impaired or blind people. The result showed that by using buzzer, when the people were blocked by something or in any dangerous. Also, this project can be used for detect flames either small flame or larger flame and also send a message. So, the message will receive by their family when something happened by use flame detection mode. Later the results of this experiments can be proven that in objects with a distance of more than 40cm the buzzer does not sound, whereas if the object is close to 40 - 5 cm the buzzer will sound. This number was obtained during testing using both the acrylic box and the experimental use by the author's hand. For the results when testing the flame sensor and SIM800L, it can be stated that to detect this large fire the distance range is more or less 20 cm, while for small fires at a distance of more or less 15 cm. At the end of this final project, the author will show the results about how this smart glove worked, which can be seen from the table, figure, and link a video that has been included at this writing. 2021-01-01T00:00:00Z