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Transmisi: Jurnal Ilmiah Teknik Elektro

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Published by Universitas Diponegoro

ISSN : - EISSN : 24076422 DOI : -

Core Subject : Education,

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Articles 7 Documents

Search results for , issue "Vol 13, No 1 (2011): TRANSMISI" : 7 Documents clear

Perancangan Alat Pendeteksi Kualitas Daging Sapi Berdasar Warna dan Bau Berbasis Mikrokontroler Atmega32 Menggunakan Logika Fuzzy Hadi, Roron Wicaksono; Setiawan, Iwan; Sumardi, Sumardi
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Seiring dengan meningkatnya konsumsi daging sapi masyarakat, membuat orang yang tak bertanggung jawab memanfaatkan kondisi dengan menjual daging yang tidak layak konsumsi pada masyarakat awam yang kurang mengetahui ciri-ciri daging sapi yang segar hanya untuk keuntungan mereka. Untuk mengantisipasi hal tersebut, dibuatlah alat yang dapat menentukan kualitas daging sapi berdasar ciri-ciri tingkat kesegaran daging sapi. Teknologi ini menggabungkan dua jenis sensor yaitu sensor bau (TGS2602) dan sensor warna (DT-Sense Color Sensor) untuk menentukan kualitas daging sapi . Pengambilan keputusan pada alat ini menggunakan logika fuzzy. Alat yang dibuat ini relatif kecil, menggunakan daya dari baterai sehingga mudah dibawa kemana-mana. Penggunaan dari alat ini mudah karena hanya mendekatkan sensor ke daging yang akan di periksa, kemudian data yang diperoleh diolah didalam mikro dan ditampilkan pada GLCD. Selain itu alat ini juga didesain untuk dapat berkomunikasi secara serial dengan PC untuk perekaman data. Dari hasil pengujian dapat disimpulkan bahwa alat yang telah dibuat dapat mendeteksi kualitas daging sapi lokal bagian has luar dan bagian has dalam. Daging sapi lokal has luar dan has dalam layak dikonsumsi sampai 17 jam setelah disembelih, pada jam ke-18 daging kurang layak dikonsumsi, pada jam ke-19 daging sudah tidak layak untuk dikonsumsi dan pada jam ke-20 seterusnya daging sudah dinyatakan busuk. Keyword : kualitas Daging, Logika Fuzzy, Mikrokontroller Atmega32.

Pencarian Rute Terpendek Menggunakan Algoritma Dijkstra dan Astar (A*) pada SIG Berbasis Web untuk Pemetaan Pariwisata Kota Sawahlunto Pugas, Diana Okta; Somantri, Maman; Satoto, Kodrat Iman
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Geographic information systems related to the position of objects in the earth's surface such as the position of the attractions that are connected with roads. Streets that are interconnected to form a complex network. Usually people use our manual to find the shortest route of an object toward a particular object but it is less than optimal because it requires precision and a long time. The shortest route search problem has been solved by several algorithms such as Dijkstra's algorithm, Astar, Floyd Warshall, Ant Colony and others. Based on this final task is to discuss the implementation of the shortest route to the geographic information system of tourism in a city using the distance parameter. City to be addressed is Sawahlunto has 12 attractions that are connected with road network. Shortest path search algorithm used is Dijkstra's and Astar algorithm. Geographic information system of tourism is displayed in a web form, with the programming language PHP, database PosgreSQL and support PostGIS and pgRouting. Based on the testing of these applications can provide the shortest route along the travel distance to and from 12 tourist sites in Sawahlunto. Astar algorithm is faster in the process of finding the shortest route instead of Dijkstra's algorithm with an average gap of 40 ms. Application also provides information supporting the tourism profile information, attractions, culture, and contacts. Keyword : shortest path, Dijkstra algorithm, Astar algorithm, geographic information system

Aplikasi Metode Template Matching untuk Klasifikasi Sidik Jari Leksono, Bowo; Hidayatno, Achmad; Isnanto, R. Rizal
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

The development of image processing technologies now provide the possibility of human to create a system that can recognize a digital image. One method to recognize a digital image is the template matching. This method serves to find small parts of the image that matches the template image. Among the technologies to solve the problem of image processing is a system of classifying fingerprints into the form of software that is able to process the fingerprint image enhancement and match fingerprint images that have been recorded by the database system and classify fingerprints into a particular class. In this final project made â€‹â€‹an application that aims to classify the fingerprint image into a particular class using template matching method.Classification process is started with fingerprint image acquisition, images size distorting 256x256, grayscale(gray level), histeq (histogram equalization), binary (image distorting becomes two scales black and white), thinning, image gets to aim, and resize 32x32. The process will then be calculated percentage of similarity with the template fingerprint image file by using the calculation of NC (Normalized Cross Correlation). The biggest percentage value indicates that the template matches the fingerprint image files. The experiment has been done classification process as much as 61 input fingerprint image with each 5 image formats are *.bmp, *.gif, *.jpg, *.png, and *.tif, so the total input fingerprint image as much as 305. For image format type *.bmp, *. gif, *. png, and *.tif on type template Plain Arch, Plain Whorl, and Double Loop point out that its success zoom as big as 100%. On Tented Arch increase supreme success on image format *.bmp, *. jpg, *. png, *. tif, on Ulnair Loop increase supreme success on image format *.png, *. tif and Radial Loop increase supreme success on image format *.bmp, *. png, *. tif. Image format that right usually experience fault which is on success zoom is contemned to image format *.jpg to type template Plain Arch, Radial Loop, Plain Whorl and Double Loop, then for image format *.gif on type template Tented Arch and Ulnair Loop. Keyword : image processing, fingerprint, template matching

Deteksi Kondisi Organ Pankreas Melalui Iris Mata Menggunakan Jaringan Syaraf Tiruan Metode Perambatan Balik dengan Pencirian Matriks Ko-Okurensi Aras Keabuan Ardianto Eskaprianda; R. Rizal Isnanto; Imam Santoso
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Iridology is the study of iris structure as a reflection of the organ condition and systems in the body. In this study, the organ which detected is pancreas. To determine the condition of the pancreas through the iris, texture analysis and classification process to distinguish the iris of the eye that contains the condition of normal and abnormal pancreas is needed. The purpose of this study was to detect the condition of the pancreas through the iris using artificial backpropagation neural network with the gray level co-occurrence matrices (GLCM) characteristics. Application for the detection of pancreas conditions was made using Matlab version 7.6 (R2008a). Inputs, which used in the study of the eye image, obtained from expert iridolog with both normal and abnormal conditions of the pancreas. The image is then carried out with iris localization process, ROI-making organ of the pancreas, and GLCM feature extraction. Results of feature extraction is used as input data (training data and test data) for the artificial backpropagation neural network method is then used to diagnose pancreatic organ conditions, ie normal or abnormal. GLCM features extraction based on testing for each characteristic texture are average, contrast, correlation, energy, entropy, and homogeneity for the group of normal training data which are valued of 3,217389, 0,233666, 0,632259, 0,575947, 1,379171, and 0,888469 respectively, while for the group of abnormal training data are 0,960503, 0,476226, 0,765723, 0,412549, 2,145339, and 0,824047 respectively. Based on the results of the testing training data, the program can make the correct diagnosis on the incoming data with a success percentage of 95,8%. While based on test results of test data, the program can make the correct diagnosis on the incoming data with a success percentage of 75%. Keyword : iridology, pancreas, GLCM, artificial neural network, backpropagation.

Perhitungan Waktu Tunda pada Sistem Radar Sekunder dengan Menggunakan Metode TDOA (Time Different Of Arrival) Nainggolan, Paskah Handikardo Benjamin; Darjat, Darjat; Christoyono, Yuli
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

The detection of the position and trajectory of the rocket is very necessary in order to launch a rocket capable of running as expected. If the position and trajectory of the rocket is not monitored properly, it could be bad. Therefore, the solution needed to be able to monitor the position and trajectory of the rocket with a specific technical studies. As an initial step in monitoring the position of the rocket is to know the time delay during the process send and receive signals between the sending station with a radio wave receiver. In this thesis, carried out a simulation application of TDOA-trilateration algorithm to compute the time delay on the secondary radar system. Techniques to get a distance that is by finding the difference between the send and receive signals between the transceiver station with a radio wave transponder. After setting on the transceiver and the transponder is set, by setting send data, protocol, and then it will be obtained automatically scanning the time delay is expected. This technique is called TDOA (Time Different Of arrival). This process will be simulated with MatlabaR2008a. Keyword : TDOA, time delay, rockets, radio, transceiver, transponder.

Perancangan dan Analisis Antena Mikrostrip dengan Frekuensi 850 MHz untuk Aplikasi Praktikum Antena Nugraha, Adhe Setya; Christyono, Yuli; Sukiswo, Sukiswo
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Problems antenna of conductor materials is rather complicated construction and size are usually quite large, so for purposes such as a cellular system is considered less efficient. For this purpose requires a simple antenna, a thin, easy to manufacture, and can be connected with other circuits. Then came the idea to design a microstrip antenna that antenna. How to make a microstrip antenna is printed on the plate by the PCB (Printed Circuit Board), then peradiasinya coated with a solution of silver or other conductor material. Who's lining material that many in the market is epoxy glass fiber (e r = 4.7) with 1.5 mm layer thickness. The purpose of this thesis is to create some models of microstrip antenna that can later be used in practical antenna. The antenna was designed at a frequency of 850MHz with a square, equilateral triangle, and circle. Then the three forms of microstrip antenna design results will be analyzed using software IE3D V12 to obtain the design parameters of antenna and frequency of these antennas. The third form of radiation pattern of microstrip antenna is directional (directional). Results of simulation of microstrip circular antennas : resonant frequency = 0.8535 GHz, VSWR = 1.046, retrun loss = - 32.89 dB, bandwidth = 1.4167%, the total gain = - 0.673953 dB, HPBW = 170,5110, rectangular microstrip antenna : resonance frequency = 0.849503 GHz, VSWR = 1109, return loss = - 25.7143 dB, bandwidth = 1.4547%, the total gain = - 0.205832 dB, HPBW = 170,6550 and for equilateral triangular microstrip antennas : resonant frequency = 0, 8515 GHz, VSWR = 1115, return loss = -25.28 dB, bandwidth = 1.3055%, the total gain = - 2.32265 dB, HPBW = 170,5710. And on the test results obtained for circular microstrip antennas : resonant frequency = 900MHz, VSWR = 1.03, power received = 0.067 mW, HPBW = 620, rectangular microstrip antennas : resonant frequency = 895MHz, VSWR = 1.04, power received = 0.039 mW, HPBW = 880 and antenna for microstrip equilateral triangle : resonance frequency = 895MHz, VSWR = 1.05, power received = 0.033 mW, HPBW = 690. Keywords: microstrip antenna, substrat materials, antenna parameters, the working frequency antenna

Analisis Model Kanal SUI Berdasarkan Modulasi QAM dan Variasi Bandwidth Frans Sugiharto; Imam Santoso; Ajub Ajulian Zahra
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Wimax is the wireless technology providing link of broadband in distance which far. Wimax is technology of broadband having high speed access and the wide reach. Such as system communications of previous nirkabel, wimax also have model of different propagation. Propagation models of wimax involve variation of delay (μs), power (dB), Factor K (dB), Doppler frequency (Hz). This Model called SUI (Stanford University Interim) channel. Variation of Parameters SUI channel determine performance of communications wimax. In this final project, analysed SUI channel use simulation where parameter of SUI channel of variation into 6 condition of channel SUI - 1 up to SUI-6. While performance of channel presented in comparison of graph of BER and Eb/No. For wimax communication used type of IEEE 802.16d with digital modulation 16 QAM and 64 QAM, include the variation of cylic prefix and bandwidth. Simulation test result show that simulation of SUI channel with type of modulation 16 QAM with cylic prefix 1/8, bandwidth 1.5MHz can repair almost entirety of performance SUI channel. Five SUI channel show best performance when at gyration of Eb/No 5dB up to 15 dB. While result of simulation SUI channel with type of modulation 16QAM with cylic prefix 1/16, bandwidth 20MHz showing bad performance, when improvement Eb/No of gyration BER between 10-1 dan 100 for channel SUI-2, SUI-3, SUI-4, SUI-5, SUI-6. Result of simulation SUI channel with type of modulation 64 QAM with cylic prefix 1/8, bandwidth 1.5MHz showing best performance. Result of simulation SUI channel with type of modulation 64 QAM with cylic prefix 1/16, bandwidth 20MHz showing bad performance. Keyword : 802.16d, SUI channel, WiMAX, cylic prefix, bandwidth.

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