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Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto)
Published by Universitas Muhammadiyah Purwokerto
ISSN : 14108607     EISSN : 25799096     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 72 Documents
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RANCANG BANGUN DAN ANALISIS SECTORAL ANTENNA RADIASI SEMICIRCULAR FREKUENSI 2.4GHz UNTUK APLIKASI IEEE 802.11b/g Susilawati, Hesti
Techno Jurnal Ilmu Teknik Vol 13, No 1 (2012): Jurnal Techno April 2012
Publisher : UMP

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Abstract

Sectoral antenna is a widely used antenna for wireless communications IEEE 802.11b/g  or Wi-Fi due to its large gain and ability to determine covered area.  In this research, a sectoral antenna 2.4GHz frequency with semicircular radiation for IEEE 802.11b/g applications was designed and built.  Design and simulation is done by 4NEC2 software.  In order to get a better performance, the  design was firstly optimized. Antenna parameters studied in this research are Gain, Radiation Pattern H-plane and E-plane, Directivity, Efficiency, and VSWR. Result shown that the simulated performance of sectoral antennaafter optimizationare 13.27 dBi Gain, 120 ° H-plane beamwidth,  10 ° E-plane beamwidth, 15.36 dB Directivity, 95.95% Efficiency, and 1.37 VSWR. While real performance testing of sectoral antenna in the field are 13 dBi Gain, 125 ° H-plane beamwidth, 15 ° E-plane beamwidth, 13.42 dB Directivity, 90.68% Efficiency, and 1.6 VSWR. There are some differences in performance between simulation and application in practice.  Among the causes are the accuracy of manufacturing, quality of materials used, environmental conditions of measurement process, measurement precision, and accuracy of the instrument used. Overall, a sectoral antenna has been created properly and can be used to accomodate 2.4 GHz frequency communication, namely IEEE 802.11b/g. Keywords: antenna, sectoral, semicircular, IEEE 802.11b/g.
PERANCANGAN RANGKAIAN PENGONDISI SINYAL UNTUK SENSOR PENGINDERAAN JAUH Taufiq, Arif Johar
Techno Jurnal Ilmu Teknik Vol 13, No 1 (2012): Jurnal Techno April 2012
Publisher : UMP

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It has done the design of signal conditioning for remote sensing sensor to anticipate disturbance magnetic field null offset and inteference above 50Hz. The result of Workbench simulation obtained the signal conditioning circuit can work properly and can anticipate the magnetic field disturbances null offset and interference frequencies above 50 Hz. Keyword: penginderaan jauh, pengondisi sinyal, LPF Butterworth
RANCANG BANGUN ALAT PENETAS TELUR AYAM BERBASIS MIKROKONTROLER Tamam, Muhammad Taufiq; Taufiq, Arif Johar; B., Gunawan P.
Techno Jurnal Ilmu Teknik Vol 11, No 2 (2010): Jurnal Techno Oktober 2010
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Has done research on chicken egg incubator device based on microcontroller. This tool works by controlling the temperature in the hatching room, which is between 36 °C to 39 °C. Based on test results, the tool is able to hatch chicken eggs with a success rate to 60%.Key word: chicken egg incubator, microcontroller
ANALISIS DISAIN FILTER LC UNTUK SISTEM DAYA Gustiono, Rusli
Techno Jurnal Ilmu Teknik Vol 12, No 2 (2011): Jurnal Techno Oktober 2011
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Static converter and electronic device are able to generate harmonics current. Harmonics current can causes overheating of rotational machinery, transformator, magnetic contactor and cable of line distribution. Harmonic current effect is able to be reduced with using harmonic filter. Actually, for significant harmonic reduction must do field experiment or trial but determine resonance frequency, value of induktor and capacitor are first step in design filter before to do field experiment.  This papper to intoduce other analysis in determining or calculating resonance frequency which be basic in harmonic filter design.               Key word: frequency resonance, harmonic filter
THE PHYSICAL STABILITY OF COCONUT MILK EMULSION Hamad, Alwani
Techno Jurnal Ilmu Teknik Vol 12, No 1 (2011): Jurnal Techno April 2011
Publisher : UMP

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Coconut milk, a term for the aqueous extract from coconut solid meat, is often uses in Asian cuisines as well as other part of the world. Studies to investigate the stability of the coconut milk emulsion often report inconsistently. The information about the stability of the coconut milk emulsion literature is used to keeping quality of coconut milks extract in processing and preservation (particularly by canning, spray-drying and freezing) and new food uses coconut milk. Key word : Coconut milk, Stability emulsion, droplet size, coconut 
ANALISIS TEMPERATUR SAMBUNGAN KABEL XLPE TEGANGAN MENENGAH 20 KV UNTUK BERBAGAI TORSI Nugroho, Daru Tri
Techno Jurnal Ilmu Teknik Vol 12, No 2 (2011): Jurnal Techno Oktober 2011
Publisher : UMP

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For insulated cable, heat factor is something that has to concern. Current capacity of a cable was influenced by characteristics of cable component. Losses at the cable will cause heat that would overcome through cable component with high resistance before it takes by environmental enclosed. The heating process will cause insulation material. Over heating process will fail insulation material and decrease lifetime of cable.Experiment on connector temperature of 20 kV middle voltage XLPE cable was doing by injecting constant alternating current from current injector to N2XEBY underground cable type that had cable connector. The test was by giving the different current level, using connector with different material, also with different torque for tightened connector bolt. In this test, we measure temperature on the cable junction every 5 minutes until the temperature equilibrium reaches.From the experiment we find that electrical current injection causes temperature to increase on cable parts until equilibrium. From relationship between current increasing and temperature increasing on cable parts we can see that maximum temperature increasing happened when it reaches equilibrium and time constant. We also see connector material and relationship torque for tightened cable connector bolt influence temperature and contact area increase. Key word : Termal characteristic, Cable connector, XLPE cable, Tourque, Equilibrium temperature
ANALISIS KEAUSAN AGREGAT BATU ANDESIT BANYUMAS DENGAN MESIN ABRASI LOS ANGELES Anjarwati, Sulfah
Techno Jurnal Ilmu Teknik Vol 14, No 2 (2013): Jurnal Techno Oktober 2013
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Kecamatan Jatilawang dan Kecamatan Wangon Kabupaten Banyumas merupakan sektor penambangan batu andesit yang belum tersentuh investor, Untuk menentukan kualitas dari batu andesit adalah dengan melakukan pengujian terhadap material yang ada, salah satu indikator untuk menentukan kualitas dari material seperti agregat kasar yang digunakan untuk pekerjaan bangunan adalah pengujian keausan agregat dengan mesin Abrasi Los Angeles. Batu Andesit yang telah diambil dari lokasi di pecah terlebih dahulu menjadi agregat kasar dengan ukuran tidak seragam di timbang, dicuci bersih dan di oven sampai mendapatkan berat yang sama dengan berat sebelum di cuci, kemudian Benda uji dimasukkan ke dalam mesin Abrasi Los Angeles,  mesin diputar dengan 500 kali putaran. Setelah selesai pemutaran, benda uji dikeluarkan dari mesin, kemudian saring dengan saringan No. 12, butiran yang diatas saringan No. 12 di timbang, dicuci bersih, dikeringkan dalam oven sampai berat tetap. Dari hasil pengujian keausan agregat dengan mesin los Anggles didapatkan nilai keausan agregat untuk batu andesit Cipetek = 9,05% Citalang = 10,14% Kalikoyong = 10,95% dan Banaran = 9,29%. Batu andesit dari Kecamatan Jatilawang dan Kecamatan Wangon Kabupaten Banyumas mempunyai keausan antara 9,05 – 10,95%, memenuhi syarat untuk digunakan sebagai bahan bangunan.Kata Kunci : Batu Andesit
DETEKSI MALWARE DALAM JARINGAN MENGGUNAKAN DIONAEA Harjono, Mr
Techno Jurnal Ilmu Teknik Vol 14, No 2 (2013): Jurnal Techno Oktober 2013
Publisher : UMP

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Jaringan komputer yang terhubung ke Internet akan memperbesar kemungkinan terjadinya ancaman terhadap keamanan sistem. Malware dalam bentuk virus, worm, dan trojan horses merupakan ancaman utama bagi keamanan sistem jaringan komputer. Penelitian ini bertujuan untuk mendeteksi dan mengidentifikasi serangan malware di dalam jaringan lokal Universitas Muhammadiyah Purwokerto menggunakan Dionaea. Instalasi Dionaea diletakkan pada segmen jaringan internal. Dari penelitian ini didapatkan sejumlah serangan kepada Dionaea yang berasal dari sejumlah host dengan alamat IP private dari dalam jaringan internal. Dionaea berhasil mengunduh salinan malware sebanyak 76 kali yang terdiri dari satu jenis malware saja yaitu Win32.Worm.Downadup.Gen. Dengan diketahuinya jenis dan lokasi malware, maka tindakan yang tepat dapat segera dilakukan.Key-words: Malware, Honeypot, Dionaea
ANALISIS TINGKAT KERAWANAN LONGSOR LERENG DI DESA BINANGUN KECAMATAN BANYUMAS Aji, Setyo; M.T., Juanita; Azizi, Amris
Techno Jurnal Ilmu Teknik Vol 15, No 1 (2014): Jurnal Techno April 2014
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Desa Binangun merupakan salah satu Desa di Kecamatan Banyumas yang termasuk kawasan rentan terhadap bencana tanah longsor. Perbukitan yang terjal, curah hujan yang tinggi, dan zona permukiman yang terletak di lereng-lereng perbukitan sangat rentan terhadap bencana tanah longsor. Penelitian ini bertujuan untuk mengetahui seberapa besar tingkat kerawanan longsor di Desa Binangun. Data didapat melalui pengamatan langsung di lapangan, uji laboratorium, dan data sekunder dari berbagai instansi dan sumber-sumber terkait. Analisis data dilakukan untuk menetapkan tipologi zona berpotensi longsor dan menentukan klasifikasi tingkat kerawanan terhadap longsor. Hasil analisis diperoleh tingkat kerawanan longsor antara 1,8–2,085, maka tingkat kerawanan zona berpotensi longsor Desa Binangun adalah sedang.Kata kunci :Tingkat kerawanan, longsor
OPTIMASI PENENTUAN STATUS AKTIVITAS GUNUNG MERAPI MENGGUNAKAN METODE HYBRID ANFIS DAN PARTICLE SWARM OPTIMIZATION (PSO) Fatkhurrozi, Bagus; Muslim, M. Aziz; Santoso, Didik R.
Techno Jurnal Ilmu Teknik Vol 15, No 2 (2014): Jurnal Techno Volume 15 No.2 Oktober 2014
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Tujuan penelitian ini adalah membuat model penentuan status aktivitas Gunung Merapi menggunakan metode hybrid ANFIS dan Particle Swarm Optimization (PSO). Data yang digunakan adalah data sekunder hasil pemantauan dari aktivitas kegempaan, deformasi tanah, dan geokimia Gunung Merapi. Data pelatihan menggunakan periode data prekursor erupsi Gunung Merapi tahun 1997, 1998, 2001, dan 2006. Data pengujian menggunakan data prekursor erupsi Gunung Merapi tahun 2010. Dari proses penelitian diperoleh hasil yaitu pada proses pelatihan, RMSE hybrid ANFIS-PSO sebesar 0,0877 dan MAPE pelatihan ANFIS-PSO sebesar 16,2518%. Pada proses pengujian, metode hybrid ANFIS-PSO dapat memperbaiki MAPE hasil pengujian ANFIS yang sebesar 10,2041% menjadi 8,3333%. Kata kunci : status aktivitas, Gunung Merapi, ANFIS, PSO

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