Jurnal Politeknik Negeri Jakarta (PNJ)
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Rancang Bangun Alat Pendeteksi Uap Vaping dan Asap Rokok Berbasis Internet of Things Terintegerasi Aplikasi Android
Get PDFSmoking is one of causes disease which especially on respiratory tract because the cigarette were content that is not good for body. Passive smoker is really made a loss for smoke/vapor that they inhaled. So therefore, smoke detector was created by using connection of WiFi that connected to ESP32 which sending data of detection from MQ-2 sensor (detect content’s smoke of tobacco cigarette) and Adafruit sensor (detect content’s vapor of e-cigarette) to firebase that integrated by android software. This would faciliated for hotel firm because the hardware not only detect smoke of cigarette, but also vapor of vape will detected so guest that disobey the rules who using except cigarette will be fined which will be monitored by hotel’s employee remotely via android software. System of this hardware specifically only for once detected which if it detected, then green LED changed to yellow (e-cigarette) if the amount shows ≥ 25 ppm and/or red (tobacco cigarette) ) if the amount shows ≥ 0.05 ppm which followed by sound of buzzer and DC fan that will dispensed smoke/vapor out of room. Neutral room which was tested for 10 minutes produced a maximum of 0.03 ppm amount of detected smoke and 24 ppm amount of detected vapor. In the MQ-2 sensor experiment with a level of 1 burst it produces 0.42 ppm and delay of 2 seconds for the sensor to detect, in a room with a volume of 1050 m3 it returns clean with a delay of 11 seconds with amount of 0.04 ppm. In the Adafruit sensor experiment with a concentration of 1 burst it produces 33 ppm, a delay of 2 seconds for the sensor to detect, in a room with a volume of 1050 m3 it returns clean with a delay of 8 seconds with amount of 24 ppm.Merokok adalah suatu tindakan yang memicu penyakit terutama pada saluran pernafasan karena kandungannya yang tidak ramah untuk tubuh. Bagi seorang perokok pasif juga sangatlah dirugikan karena asap/uap yang terhirup. Maka dari itu, alat pendeteksi asap rokok dirancang dengan memanfaatkan fungsi jaringan WiFi yang tersambung dengan ESP32 yang akan mengirimkan data deteksi dari sensor MQ-2 (pendeteksi kandungan asap rokok tembakau) dan sensor Adafruit (pendeteksi kandungan uap rokok elektrik) menuju firebase yang terintegrasi dengan aplikasi android. Hal ini akan memudahkan bagi firma perhotelan karena alat ini tidak hanya dapat mendeteksi asap rokok tembakau saja, namun uap rokok elektrik pun juga akan terdeteksi sehingga tamu yang melanggar selain menggunakan rokok juga akan dapat dikenai denda yang mana akan dipantau oleh pegawai hotel tersebut secara jarak jauh melalui aplikasi android. Sistem dari alat ini khusus untuk sekali terdeteksi saja yang mana jika terdeteksi, maka LED dari hijau berubah menjadi kuning (rokok elektrik) jika sudah menyentuh ≥ 25 ppm dan/atau merah (rokok tembakau) jika sudah menyentuh ≥ 0,05 ppm yang diikuti dengan suara buzzer dan kipas DC yang akan membuang asap/uap keluar ruangan. Ruangan netral yang teruji selama 10 menit menghasilkan maksimal asap yang terdeteksi sebanyak 0,03 ppm dan uap yang terdeteksi sebanyak 24 ppm. Pada percobaan sensor MQ-2 dengan kadar 1 semburan menghasilkan 0,42 ppm dan delay selama 2 detik untuk sensor mendeteksi, pada ruang yang bervolume 1050 m3 kembali bersih dengan delay 11 detik dengan nilai 0,04 ppm. Pada percobaan sensor Adafruit dengan kadar 1 semburan menghasilkan 33 ppm, delay 2 detik untuk sensor mendeteksi, pada ruang yang bervolume 1050 m3 kembali bersih dengan delay 8 detik dengan nilai 24 pp
Pengukur Gula Darah Non-Invasif Berbasis Internet of Things
Get PDFDiabetes is a chronic disease characterized by high blood sugar levels. Without proper attention and treatment, diabetes can become a deadly disease. It is estimated by the International Diabetes Federation, that by 2045 there will be 28.6 million diabetics in Indonesia. Monitoring blood sugar levels regularly every day can help diabetics continue to monitor blood sugar levels so that they remain within normal limits. Generally checking blood sugar must be passed with an uncomfortable and even painful feeling because a blood sample is needed. The process of taking blood samples is known as an invasive method, namely by pricking a fingertip with a lancet so that blood comes out, then a drop of blood is placed on a test strip and the results will come out on the glucose meter. To facilitate monitoring of blood sugar levels, this research has developed a non-invasive tool that can help diabetics control their blood sugar levels. By utilizing the Near-Infrared Spectroscopy method, the examination will be carried out more comfortably, painlessly, and affordably. This tool, which was built using the Flame Detection Module and ESP32, has been functioning with an error percentage in the tests conducted on 5 volunteers of 17.9%. The output resulting from measuring blood sugar levels will be sent to Telegram application along with the measurement date so that the data can be used as a daily monitoring record.Diabetes adalah penyakit kronis yang ditandai dengan tingginya kadar gula darah. Tanpa perhatian dan penanganan yang tepat, diabetes dapat menjadi penyakit yang mematikan. Diperkirakan oleh International Diabetes Federation, pada tahun 2045 nanti penderita diabetes di Indonesia akan mencapai angka 28,6 juta. Monitoring kadar gula darah rutin setiap hari dapat membantu penderita diabetes untuk terus memantau kadar gula darah agar tetap berada di dalam batas normal. Umumnya pengecekan gula darah ini harus dilalui dengan rasa yang kurang nyaman bahkan menyakitkan karena diperlukannya sampel darah. Proses pengambilan sampel darah tersebut dikenal sebagai cara invasive, yaitu dengan menusuk ujung jari dengan lanset agar darah keluar, kemudian setetes darah tersebut diletakan pada strip tes dan hasilnya akan keluar pada meteran glukosa. Untuk memudahkan pemantauan kadar gula darah, pada penelitian ini telah dikembangkan alat non-invasive yang dapat membantu penderita diabetes dalam mengontrol kadar gula darahnya. Dengan memanfaatkan metode Near-Infrared Spectroscopy, pengecekan akan dilalui dengan lebih nyaman, tanpa rasa sakit dan lebih terjangkau. Alat yang dibangun dengan pemanfaatan Flame Detection Module dan ESP32 ini telah berfungsi dengan persentase error dalam pengujian yang dilakukan kepada 5 orang relawan sebesar 17,9%. Output yang dihasilkan dari pengukuran kadar gula darah akan dikirimkan ke aplikasi Telegram beserta dengan tanggal pengukurannya, sehingga data tersebut dapat dijadikan sebagai catatan monitoring harian
ANALISIS TERPUTUSNYA KONEKSI REMOTE CONTROL SWITCHING UNIT (RCSU) PADA PERALATAN MIDDLE MARKER MEREK SELEX
Get PDFThe Instrument Landing System (ILS) is one of the flight navigation equipment that functions to provide guidance signals to aircraft in the final approach position towards the runway. ILS consists of three components: Localizer, Glide Path, and Marker Beacon. To facilitate monitoring of its equipment, ILS has a monitoring software called the Remote Control Switching Unit (RCSU). RCSU is used to provide a central visual monitoring station with information about the status of ILS, DVOR, and DME equipment. RCSU is connected to each ILS shelter. This research aims to find a solution to the disconnection issue of the RCSU Middle Marker of the Selex brand. The research method used is qualitative data collection through descriptive data analysis techniques and data collection through semi-structured interviews and participative observation. The method starts with equipment checking, analysis, and problem resolution. Through this research, it was found that the cause of the issue was a damaged RJ 45 connector due to corrosion. The corrosion was caused by rainwater and temperature fluctuations in the surrounding environment.Instrument Landing System (ILS) merupakan salah satu peralatan navigasi penerbangan yang memiliki fungsi untuk memberikan sinyal panduan kepada pesawat dalam posisi final approach menuju ke landasan. ILS terdiri dari 3 bagian, yaitu Localizer, Glide Path, dan Marker Beacon. Untuk mempermudah monitoring peralatannya, ILS memiliki suatu software monitoring yang dinamakan Remote Control Switching Unit (RCSU). RCSU digunakan untuk menyediakan stasiun pemantauan visual pusat tentang status peralatan ILS, DVOR, dan DME. RCSU terhubung ke setiap shelter ILS. Penelitian ini bertujuan untuk menemukan penyelesaian dari permasalahan terputusnya koneksi RCSU Middle Marker merek Selex. Adapun metode penelitian yang digunakan adalah metode pengumpulan data dilakukan secara kualitatif dengan teknik analisis data deskriptif dan pengumpulan data menggunakan wawancara semi terstruktur dan observasi partisipatif. Metode ini dimulai dari tahap pengecekan peralatan, analisis, dan penyelesaian permasalahan. Melalui penelitian ini, ditemukan penyebab permasalahan tersebut yaitu terdapat konektor RJ 45 yang mengalami kerusakan akibat korosi. Korosi tersebut disebabkan diakibatkan oleh air hujan dan perubahan temperatur suhu di lingkungan sekitar
MODEL PROSES PRODUKSI KEMASAN BERBASIS OFFSET PRINTING
No full textThe need for packaging is currently increasing, providing opportunities for the development of the packaging printing industry, especially offset printing-based printing. This study aims to analyze the flow of the production process in the offset printing industry that produces packaging. This study uses a descriptive qualitative method to analyze the running of the production process which consists of pre-print, print, and post-print. The results showed that the results of the packaging printing production process at each stage were strongly influenced by the previous stage.Kebutuhan kemasan saat ini semakin meningkat sehingga memberikan peluang berkembangnya Industri percetakan kemasan khususnya percetakan yang berbasis offset printing. Penelitian ini bertujuan untuk menganalisis aliran proses produksi pada industri percetakan offset yang memproduksi kemasan. Penelitian ini menggunakan metode kualitatif deskriptif untuk menganalisis berjalannya proses produksi yang terdiri dari pracetak, cetak, dan pascacetak. Hasil penelitian menunjukkan bahwa hasil proses produksi percetakan kemasan pada masing-masing tahapan sangat dipengaruhi oleh tahap sebelumnya
Optimalisasi Kinerja Panel Surya Berdasarkan Waktu Tunda Pergerakan Solar Tracker
Get PDFSecara umum energi surya merupakan energi yang berasal dari sinar dan panas matahari yang kemudian diubah menjadi energi listrik. Energi elektromagnetik yang dipancarkan oleh matahari ini bersifat terus menerus dan ramah lingkungan karena tidak menimbulkan pencemaran apapun di dunia ini. Oleh sebab itu, ketika meluasnya kesadaran akan lingkungan mulai muncul, energi surya menjadi alternatif paling potensial sebagai sumber energi terbarukan. Meskipun energi surya merupakan sumber energi yang baik, dibutuhkan metode terbaik untuk meningkatkan efektifitas panel surya dalam menyerap energi matahari dengan memastikan posisinya selalu tegak lurus terhadap arah sinar matahari. Salah satu metodenya adalah dengan menggunakan solar tracker yang dapat membuat panel surya bergerak secara dinamis mengikuti arah datangnya sinar matahari. Telah banyak dikembangkan desain sistem solar tracker dan metode pengujiannya untuk mendapatkan penyerapan energi surya secara maksimal dengan menggunakan pelacak surya secara otomatis. Dalam penelitian ini digunakan solar tracker yang dibuat dengan modul Arduino Mega 2560 sebagai otak komputer yang memproses data, board NodeMCU dan bahasa pemrograman PHP sebagai piranti utama dalam sistem pemantauan, motor servo sebagai penggerak, dan dua buah Light Dependent Resistor (LDR) sebagai sensor untuk melacak pergerakan matahari dengan variasi pergerakan solar tracker yang dilakukan setiap 1, 5, 10, dan 15 menit. Hasil penelitian menunjukkan bahwa energi optimum dari hasil perbandingan antara panel surya statis dan dinamis adalah dengan men-setting pada delay 10 menit dengan perbandingan 9,9% lebih tinggi daripada statis.
 
ANALISIS FAKTOR PENYEBAB KETERLAMBATAN PENYELESAIAN PADA PROYEK PEMBANGUNAN APARTEMEN URBAN SIGNATURE CIRACAS
Get PDFThe delay in completion of construction that has exceeded the work time target according to the initial agreement is very powerful on the construction project itself. Delays in the project occur due to problems that arise in terms of materials, labor, costs, equipment, environment, and others. In this research, an analysis was carried out on what factors were the cause of the delay in the completion of the superstructure and the rating of the value of the reliability function of each work. The Fault Tree Analysis (FTA) approach would be employed, which is a method that makes use of fault tree analysis in the form of a graphic model based on the outcomes of conducted interviews. In the graphic model, there were several event symbols and logic gate symbols to connect the event symbols. On the graphic model, the simplest cut set was acquired using Boolean algebra and the Method of Obtain Cut Set (MOCUS). Based on the results of the analysis, there were 33 basic events or jobs that experienced delays, including changes in rebar supply by the Owner, limited human resources, a lot of repair work, evaluation of the project schedule, SILO SIO PH licensing, late payments, delays in material delivery, and others. Typical structural work and ladder structures, the Boolean algebra law can be applied because it has a repeating code. Meanwhile, on the roof of the engine room, the law of algebra cannot be applied since the work does not have a repeating code. The reliability function is calculated in the analysis that follows. When all three variables are accurate, the system operates as intended
EVALUASI KINERJA STRUKTUR JEMBATAN INTEGRAL DARI PERUBAHAN STRUKTUR JEMBATAN PARSIAL
Get PDFThe Serpong-Balaraja Section 1A toll road construction project's Foresta bridge structure had a modification in span length from 40 meters to 41,386 meters without changing the girder's specifications. The structural system switches from partial bridges to integrated beams to reduce the number of field moments caused by span changes. With the change in the structural system, it is necessary to evaluate the performance of the bridge structure with an integral system by checking the cross-sectional capacity, comparing the negative moment resisting reinforcement from the analysis with the existing conditions, and determining the reinforcement that can be used if the integral bridge is inadequate. With the help of software, evaluation is carried out by checking the ability of the cross section to withstand moments and checking its deflection and shear forces. Based on the results of the analysis, the moment capacity of the middle section is 18198.38 kN.m., and the moment of the load capacity is 7829.824 kN.m. This indicates that the middle capacity has been in service. With a load moment capacity of 11335.04 kNm and an end cross-sectional capacity of 9401.26 kN.m, the performance of the cross section is not serviceable. In addition, the bridge deflection meets the allowable deflection limit of 51.73 mm after the bridge is integrated because previously the partial bridge deflection was 79.83 mm, and after being integrated, it became 23.28 m. Furthermore, the shear forces of the partial bridge (1599,162 kN) and the integral bridge (1585,009 kN) are less than the maximum shear force that can be carried, which is 6934,12 kN. Based on the analysis results, D32-100 negative moment resisting reinforcement is needed, while the existing condition reinforcement uses D32-150. This indicates that the structure requires reinforcement. Fiber-reinforced polymer (FRP) was chosen as reinforcement in reference to 022/BM/2011 because it is superior in several ways
PERBANDINGAN DAYA DUKUNG FONDASI TIANG BOR MENGGUNAKAN METODE REESE & WRIGHT DAN MEYERHOF
Get PDFThe Serang-Panimbang Toll Road Construction Project is one of the National Strategic Projects (PSN) with a total length of 83,677 km. The main bridge 18, which is one of the projects on the toll road section, has a drill pile foundation for its substructure. The drill pile foundation is a pile foundation that is installed by drilling the ground first, then filling it with reinforcement that has been assembled and cast in concrete. The foundation has a slope that is less than the permitted slope to support the load above it and is built to withstand both vertical and horizontal stresses. This study compared the Reese & Wright method with the Meyerhof method, two bearing capacity estimation techniques. The comparison aims to determine whether the outcomes of the two approaches utilized significantly differ from one another. The findings of the SPT test were used to conduct the analysis of bearing capacity. In this work, drill piles with a 1 m diameter and 15 m depth were used. According to the analysis's findings, the permit's bearing capacity using the Reese & Wright approach was 246.20 tons, however the permit's bearing capacity using the Meyerhof method was found to be 541.87 tons. For the Reese & Wright approach, the single drill pile decreased by 9,07 mm, and the group pile decreased by 25,7 mm; for the Meyerhof method, the single drill pile decreased by 9,17 mm, and the group pile decreased by 25,34 mm. Furthermore, it was found from both methods of calculating the bearing capacity that both stable static loads and dynamic loads work so that the foundation can be categorized (P max < Q single permit). The ratio of the bearing capacity of the single mast permit on the Reese & Wright method compared to the Meyerhof method is 0.478:1.
Keywords: Bearing Capacity, Drilled Pile, Stability
EVALUASI RANCANGAN MUTU BETON PADA PEMBANGUNAN GEDUNG DI KALIMANTAN BARAT
Get PDFConcrete is a significant substance that is frequently employed in infrastructure construction. When manufacturing concrete, a concrete mix, or Design Mix Formula (DMF), must be created to specify the proportions of the materials to achieve the desired concrete quality. Concrete quality is classified based on the compressive strength of the concrete, which value has a significant impact on the DMF produced. One of the factors that can affect the quality of concrete is the fact that the dosage used in making concrete in the field is not in accordance with the existing DMF. This means the quality of the concrete in the field is not in accordance with what was planned, namely the quality of K-300 concretes. This study's objectives are to assess the current DMF and examine the variables influencing concrete quality in the field. To conduct the research, the Pontianak State Polytechnic's Civil Engineering Concrete Laboratory tested aggregates, created DMF, created cube specimens, and tested cube concrete compression tests. As a result, it can be said that one DMF can be used for all these structures because the laboratory results demonstrate that the DMF utilized in the field is consistent with the intended concrete quality, namely K-300 concrete quality. At the age of 28 days, concrete with a slump value of 9 cm had an average compressive strength of 339.882 kg/cm2, or 28.21 MPa. According to the findings of these investigations, the field-related factors cause the quality of the concrete to differ from the planned concrete's quality.
Keywords: Concrete, DMF, Quality of Concrete, Testing, Compressive Strength
PERILAKU TANAH EKSPANSIF YANG DITAMBAHKAN LAPISAN GEOTEXTILE TERHADAP DAYA DUKUNGNYA
Get PDFThere are many problems regarding expansive soils, including the magnitude of stability (CBR) and swelling due to the compaction process, fluctuating water content. The compaction process is carried out layer by layer (field/laboratory), in accordance with the laboratory compaction process, layers of sand are given, so that the arrangement is alternate (5 layers). Each layer is given a membrane / sheet of geotextile. The conclusions obtained are: The amount of swelling in the compaction test with Modified Compaction in soaked conditions is 12.7%, this illustrates that the expansive soil sample from Lippo Cikarang is in the category of high development potential; The stability of the subgrade soil as part of the road body is given by the CBR value, the stability in the study with 5 layers, the formation is soil + sand + soil + sand + soil, with a geotextile layer (G1) of 14.9%, G2 of 16.85%, and G3 by 10.73%, and G4 formation by 6.53%. The magnitude of stability (CBR) and expansion of the expansive soil from Lippo Cikarang which was compacted according to the Modified Compaction was 5.45% (original soil), while the swelling was 12.7 %; The provision of geotextile membranes for the G3 and G4 formations has a positive effect, namely swelling below the original soil swelling value so that it provides development below the original soil value