1,720,954 research outputs found
RANCANG BANGUN WIRELESS SENSOR NETWORK SEBAGAI SISTEM MONITORING OUTPUT PADA PANEL SURYA BERBASIS WEB SERVER
Full text linkRANCANG BANGUN WIRELESS SENSOR NETWORK SEBAGAI SISTEM MONITORING OUTPUT PADA PANEL SURYA BERBASIS WEB SERVER
Fitto Trihanda M.
(1512902)
Dosen Pembimbing:
Dr.Eng. Aryuanto Soetedjo, MT
Ir. Eko Nurcahyo, MT
Konsentrasi Teknik Elektronika, Jurusan Teknik Elektro
Fakultas Teknologi Industri
Institut Teknologi Nasional Malang
Jl. Raya Karanglo KM 2, Malang
Email: [email protected]
ABSTRAK
Indonesia merupakan negara beriklim tropis dengan kekayaan sumber daya alam yang melimpah. Hampir semua kekayaan pada sumber daya alamnya dapat diambil manfaatnya, salah satunya ialah tenaga surya berupa sinar dan panas dari matahari yang dapat mengubah energi panas menjadi sumber daya listrik. Melalui langkah optimalisasi pemanfaatan energi baru terbarukan (EBT) konservasi energi surya untuk saat ini sangat diminati dan masih terus dikembangkan, termasuk menggalakan penggunaan tenaga surya pada setiap gedung-gedung bertingkat khususnya di kota besar.
Pada beberapa unit panel surya yang terpasang pada gedung-gedung bertingkat saat ini masih sulit untuk mengetahui kinerja dari panel surya tersebut, umumnya teknisi yang bertugas sebagai pengecekan masih menggunakan metode manual yaitu dengan cara pengecekan output panel surya secara langsung, tentunya ini tidak menghemat waktu dalam pengolahan data. Dengan teknik monitoring menggunakan WSN (Wireless Sensor Network) pada gedung bertingkat node sensor yang diletakkan pada titik-titik panel mampu menampilkan data-data output dan kondisi panel surya secara real time pada Web Server.
Berdasarkan pengujian monitoring pada panel surya 5WP dengan topologi point-to-point menggunakan WSN yang meliputi ; (a) sensor suhu LM35 memiliki error rata-rata sebesar 0,62% ; (b) sensor cahaya LDR memiliki error rata-rata sebesar 2,85% ; (c) sensor arus ACS712 memiliki error rata-rata sebesar 4,97% (d) sensor tegangan memiliki error rata-rata sebesar 2,60 %. (e) Pada Web Server, sistem ini mampu me-monitoring data sensor node 1 dan 2 sekaligus dalam satu halaman Web dengan menampilkan 10 data grafik sensor dan kondisi panel secara real time dengan delay pengiriman 8 detik.
Kata Kunci—Wireless Sensor Network, Akuisisi Data, Web Server, Panel Surya, Arduino Uno
DESIGN OF WIRELESS SENSOR NETWORK AS MONITORING OUTPUT SYSTEMS ON SOLAR CELL BASED ON WEB SERVER
Fitto Trihanda M
(1512902)
Supervisor:
Dr.Eng. Aryuanto Soetedjo, MT
Ir. Eko Nurcahyo, MT
Department of Electrical Engineering. Electronics Engineering
Faculty of Industrial Technology National Institute of Technology Malang
Jl. Raya Karanglo KM 2, Malang
Email: [email protected]
ABSTRACK
Indonesia is a tropical country with rich natural resources are abundant. Almost all the wealth of its natural resources can be taken advantage, one of which is solar energy that lights and heat from the sun that can transform heat energy into electrical power source. Through the step of optimizing the utilization of renewable energy, solar energy conservation for now very popular and is still being developed, including promoting the use of solar power in every high-rise buildings, especially in big cities.
Units of solar cells installed on high-rise buildings is still difficult to determine the performance of the solar cell, generally technician who served as checks are still using the manual method that is by checking the output of the solar cells directly, this would not save time in data processing. With monitoring techniques using WSN on node-level building nodes that are placed on the dots of the panel capable of displaying data output and solar panel conditions in real time on the Web Server.
Based on the monitoring test on solar cells 5WP with topology point-to-point using a WSN that includes (a) LM35 temperature sensor has an average error of 0.62% ; (b) the light sensor LDR has an average error of 2.85% ; (c) ACS712 current sensor has an average error of 4.97% ; (d) voltage sensor has an average error of 2.60% ; (e)On the Web Server, the system is able to monitor sensor data node 1 and 2 simultaneously in one web page by displaying 10 data graphics sensors and panel conditions in real time with delivery delay of 8 seconds.
Keywords-Wireless Sensor Network, Data Acquisition, Web Server, Solar cell, Arduino Un
PERANCANGAN PROTOTIPEMONITORING GAS AMONIA (NH3) SEBAGAI EARLY WARNING PADA LINGKUNGAN INDUSTRI DENGAN SISTEM AKUISISI DATA
Full text linkPenurunan kualitas udara akhir-akhir ini disebabkan pencemaran udara yang di hasilkan oleh industri berupa gas yang mengandung zat di atas batas kewajaran. Salah satunya ialah gas amonia. Gas amonia merupakan senyawa korosif dan kaustik yang dapat merusak kesehatan. Monitoring Level gas amonia diudara akan mudah dilakukan dengan bantuan alat pencatat otomatis (sistem akuisisi data). Tujuan penelitian ini adalah merancang, mengkonstruksi dan menguji alat monitoring gas amonia secara otomatis; penyimpanan data kimia dalam satuan ppm (part per million); dan sistem pengiriman data kimia dalam satuan ppm (part per million) secara otomatis ke sistem monitoring. Metode perancangan terdiri dari beberapa tahapan yang meliputi proses perancangan sistem; pembuatan alat; pengujian rangkaian alat per blok hardware maupun software dan pengujian rangkaian alat keseluruhan sistem. Hasil dari penelitian ini adalah terrangkainya alat pendeteksi kadar gas amonia pada ruang dimensi 12 cm³ dengan range 0.82 – 6.80 ppm (part per milion); (2) alat dapat memberi peringatan dini apabila gas amonia yang terdeteksi melebihi batas ambang standar yang ditentukan (5ppm), (3) dapat menyimpan me-nyimpanan data hasil pengukuran berdasarkan tanggal dan waktu secara real time, (4) data real time dapat ditampilkan dalam bentuk grafik 2 dimensi
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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