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Desain Sistem Pengatur Lampu Lalu Lintas dengan Identifikasi Kepadatan Kendaraan Menggunakan Metode Subtraction Djavendra, Geminiesty Lathifasari; Aisyah, Siti; Jamzuri, Eko Rudiawan
JURNAL NASIONAL TEKNIK ELEKTRO Vol 7, No 2: July 2018
Publisher : Jurusan Teknik Elektro Universitas Andalas

The increasing number of vehicle causes the increasing of traffic density in which one of the main factors of congestion. Traffic density is usually alocated at certain points of roads, one at the instersection. In the novel technology, traffic in the crossroads had been controlled by traffic light using a traffic density prediction system. This prediction system would determine the duration ofÂ active green lights and red lights at each intersection. One of the most common prediction systems is a statistical estimation of vehicle density. Other method at controlling traffic density such as visually monitoring system might be implemented to increase system performance. Therefore, this research proposes an automatically traffic control system by predicting traffic density using image processing techniques. The proposed system is using a camera to visually monitor traffic condition. The image data obtained from the camera would be processed using an image processing and background subtraction techniques. This technique compared an the captured-image with a reference image to result a subtracted-image depicted the traffic density which is represented by the number of white pixels. Based on the number of white pixels that have been obtained, the percentage of vehicle queue length and vehicle density can be determine. The percentage then sent to the microcontroller in order to control the duration of the active green light. The traffic light control system using traffic density calculation has an accuracy of up to 77.03% while using the calculation of vehicle queue length reached 91.18%.Keywords : Image processing, image subtraction, light control system, traffic density, dilation, erosionAbstrakBertambahnya jumlah kendaraan menyebabkan meningkatnya kepadatan lalu lintas yang menjadi salah satu faktor utama penyebab kemacetan. Kepadatan lalu lintas biasanya teralokasi di beberapa titik-titik tertentu di ruas jalan, salah satunya di persimpangan. Saat ini lalu lintas di persimpangan jalan diatur oleh lampu lalu lintas menggunakan sistem prediksi kepadatan lalu lintas. Sistem prediksi ini nantinya akan menentukan lama aktifnya lampu hijau dan lampu merah di setiap persimpangan. Salah satu sistem prediksi yang banyak digunakan adalah metode estimasi stastistik kepadatan kendaraan. Metode lain pengontrolan kepadatan lalu lintas seperti sistem pemantauan secara visual memungkinkan untuk diterapkan guna menambah performansi sistem. Untuk itu penelitian ini mengusulkan pembuatan sebuah sistem pengontrolan lampu lalu lintas secara otomatis dengan prediksi kepadatan kendaraan menggunakan teknik pengolahan citra. Sistem yang dibangun menggunakan kamera untuk memantau kondisi kendaraan di jalan raya. Data gambar yang didapat dari kamera kemudian diolah menggunakan teknik pengolahan citra dan teknik pengurangan citra. Teknik ini membandingkan citra objek dengan citra referensi sehingga dapat diketahui jumlah piksel putih pada citra hasil pengurangan citra. Berdasarkan jumlah piksel putih yang telah diperoleh tersebut dapat diketahui persentase panjang antrian kendaraan dan kepadatan kendaraan. Data persentase yang diperoleh kemudian dikirim ke mikrokontroler untuk mengontrol durasi nyala lampu hijau. Pengontrolan lampu lalu lintas dengan perhitungan kepadatan kendaraan memiliki akurasi hingga 77.03% sedangkan dengan perhitungan panjang antrian kendaraan mencapai 91.18%.Â Kata Kunci : Pengolahan citra, pengurangan citra, sistem kontrol lampu, kepadatan kendaraan, dilation, erosion

Desain Sistem Pengatur Lampu Lalu Lintas dengan Identifikasi Kepadatan Kendaraan Menggunakan Metode Subtraction Geminiesty Lathifasari Djavendra; Siti Aisyah; Eko Rudiawan Jamzuri
JURNAL NASIONAL TEKNIK ELEKTRO Vol 7, No 2: July 2018
Publisher : Jurusan Teknik Elektro Universitas Andalas

The increasing number of vehicle causes the increasing of traffic density in which one of the main factors of congestion. Traffic density is usually alocated at certain points of roads, one at the instersection. In the novel technology, traffic in the crossroads had been controlled by traffic light using a traffic density prediction system. This prediction system would determine the duration of active green lights and red lights at each intersection. One of the most common prediction systems is a statistical estimation of vehicle density. Other method at controlling traffic density such as visually monitoring system might be implemented to increase system performance. Therefore, this research proposes an automatically traffic control system by predicting traffic density using image processing techniques. The proposed system is using a camera to visually monitor traffic condition. The image data obtained from the camera would be processed using an image processing and background subtraction techniques. This technique compared an the captured-image with a reference image to result a subtracted-image depicted the traffic density which is represented by the number of white pixels. Based on the number of white pixels that have been obtained, the percentage of vehicle queue length and vehicle density can be determine. The percentage then sent to the microcontroller in order to control the duration of the active green light. The traffic light control system using traffic density calculation has an accuracy of up to 77.03% while using the calculation of vehicle queue length reached 91.18%.Keywords : Image processing, image subtraction, light control system, traffic density, dilation, erosionAbstrakBertambahnya jumlah kendaraan menyebabkan meningkatnya kepadatan lalu lintas yang menjadi salah satu faktor utama penyebab kemacetan. Kepadatan lalu lintas biasanya teralokasi di beberapa titik-titik tertentu di ruas jalan, salah satunya di persimpangan. Saat ini lalu lintas di persimpangan jalan diatur oleh lampu lalu lintas menggunakan sistem prediksi kepadatan lalu lintas. Sistem prediksi ini nantinya akan menentukan lama aktifnya lampu hijau dan lampu merah di setiap persimpangan. Salah satu sistem prediksi yang banyak digunakan adalah metode estimasi stastistik kepadatan kendaraan. Metode lain pengontrolan kepadatan lalu lintas seperti sistem pemantauan secara visual memungkinkan untuk diterapkan guna menambah performansi sistem. Untuk itu penelitian ini mengusulkan pembuatan sebuah sistem pengontrolan lampu lalu lintas secara otomatis dengan prediksi kepadatan kendaraan menggunakan teknik pengolahan citra. Sistem yang dibangun menggunakan kamera untuk memantau kondisi kendaraan di jalan raya. Data gambar yang didapat dari kamera kemudian diolah menggunakan teknik pengolahan citra dan teknik pengurangan citra. Teknik ini membandingkan citra objek dengan citra referensi sehingga dapat diketahui jumlah piksel putih pada citra hasil pengurangan citra. Berdasarkan jumlah piksel putih yang telah diperoleh tersebut dapat diketahui persentase panjang antrian kendaraan dan kepadatan kendaraan. Data persentase yang diperoleh kemudian dikirim ke mikrokontroler untuk mengontrol durasi nyala lampu hijau. Pengontrolan lampu lalu lintas dengan perhitungan kepadatan kendaraan memiliki akurasi hingga 77.03% sedangkan dengan perhitungan panjang antrian kendaraan mencapai 91.18%. Kata Kunci : Pengolahan citra, pengurangan citra, sistem kontrol lampu, kepadatan kendaraan, dilation, erosion

Kotak Surat Pintar Berbasis Mikrokontroler ATMEGA8535 Parulian Sepriadi; Agus Wahyudi; Iman Fahruzi; Siti Aisyah
JURNAL INTEGRASI Vol 2 No 2 (2010): Jurnal Integrasi Edisi Khusus (Seminar Nasional) - Juli 2010
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar

Makalah ini disarikan dari hasil pengerjaan sebuah praktikum Tugas Akhir Diploma Tiga yang bertema Kotak Surat Pintar Berbasis Mikrokontroler Atmega8535. Kotak surat ini dibuat dengan tujuan mempermudah pegawai kantor pos dalam memonitor isi kotak surat. Dengan dilengkapi komunikasi jarak jauh maka kotak surat ini sangat tepat diperuntukkan bagi daerah terpencil. Dalam pengaplikasiannya, alat ini membutuhkan satu PC dan satu LCD untuk memonitor jumlah isi kotak surat. Kotak Surat pintar ini menggunakan mikrokontroler ATMEGA8535 sebagai pengolah data dan juga dilengkapi dengan transmitter radio RF XETX01A dan receiver radio RF FS1000A sebagai komunikasi untuk pengiriman dan penerimaan data jarak jauh.

Rancang Bangun Antena Double Biquad Pada Sistem Ground Segment Menggunakan Frekuensi 433 MHz Heru Wijanarko; Dwi Lastiko Bramantyo; Kamarudin Kamarudin; Siti Aisyah
Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 19, Nomor 2, Februari 2022
Publisher : Website

Its necessary a technology or advanced device that can observe atmospheric data and send it to an earth station (ground segment). Data of information on air pressure, temperature, humidity, and wind speed are ordinarily needed by the Meteorological, Climatological and Geophysical Agency (BMKG) in weather forecasts. To be able to receive atmospheric data sent by the payload, the ground segment requires a receiver equipped with an antenna that has a big gain. The receiver is a transmission device which is equipped by an antenna. Double Biquad antenna is one of antenna with a big gain. Utilizing of the excellence specs of Double Biquad antenna, the author pick this antenna as a ground segment device that can support telemetry communication systems. The process of designing the Double Biquad antenna is carried out using an antenna calculator which is then simulated using 4nec2 software. The results of the antenna manufacture were tested and measured the antenna parameters such as: VSWR, impedance, radiation pattern and compared the RSSI value with Monopole on 3DR. The results show that the optimum frequency is 449.056 MHz with a VSWR of 1.33 which still meets the criteria of 1 ≤ VSWR ≤ 2. The value of the RSSI range on the Double Biquad antenna, 145 - 220, is better then comparison antenna. Coupled with the reflector which also strengthens the reception of power on the antenna. So this antenna is feasible to be used as a communication antenna in the ground segment which working on 433 MHz. Dibutuhkan sebuah teknologi yang dapat melakukan pengamatan data atmosfer dan mengirimkannya ke stasiun bumi (ground segment), tentunya dibutuhkan suatu perangkat khusus yang dapat melakukan hal tersebut. Data berupa informasi tekanan udara, temperatur, kelembaban, dan kecepatan arah angin biasanya dibutuhkan oleh Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) dalam melakukan prakiraan cuaca. Untuk dapat menerima data atmosfer yang dikirim oleh payload, pada ground segment dibutuhkan suatu receiver yang dilengkapi dengan antena yang memiliki gain besar. Receiver tersebut adalah alat transmisi yang sering disebut dengan antena. Salah satu antena dengan gain yang besar adalah antena Double Biquad. Dengan memanfaatkan kelebihan yang dimiliki oleh antena Double Biquad penulis memilih antena ini sebagai perangkat ground segment yang dapat mendukung sistem komunikasi telemetri. Proses perancanagan antena Double Biquad dilakukan menggunakan antena calculator yang kemudian disimulasikan meggunakan software 4nec2. Hasil pembuatan antena diujicobakan dan dilakukan pengukuran beberapa parameter antena seperti: VSWR, impendansi, pola radiasi dan membandingkan nilai RSSI dengan antena pembanding (Monopole pada 3DR). Hasil pengujian menunjukkan nilai frekuensi optimum yang didapat sebesar 449,056 MHz dengan VSWR sebesar 1,33 dimana masih memenuhi kriteria 1 ≤ VSWR ≤ 2. Nilai rentang RSSI pada antena Double Biquad, 145 – 220, lebih baik jika dibandingkan dengan antena pembanding. Ditambah dengan adanya reflektor yang turut memperkuat penerimaan daya pada antena. Sehingga antena ini layak untuk digunakan sebagai antena komunikasi di ground segment pada frekuensi kerja 433 MHz.

Desain dan Implementasi Antena Quadrifilar Helix untuk Komunikasi Antarpulau pada Pita UHF Heru Wijanarko; M. Hanif; Siti Aisyah; Kamarudin Kamarudin
Jurnal Rekayasa Elektrika Vol 16, No 2 (2020)
Publisher : Universitas Syiah Kuala

Riau Islands, which consists of thousands of islands and is located in the border area of Indonesia, has its own challenges. Based on this strategic geographical location, there are threats and opportunities to develop inter-island information systems. Wireless long-range communication is considered the most suitable for these conditions. Antennas are an important part of wireless communication. Research and fabrication of the Helix Quadrifilar antenna by utilizing the advantages and consideration of simple, lightweight and inexpensive materials, as the receiver antenna in inter-island communication systems. In this research, the design was carried out with the assist of the Antenna Magus software, measurements were using a Vector Network Analyzer instrument, and testing accomplished under the LOS conditions. The results are fabricated antenna optimum frequency shift of 433 MHz to 452.5 MHz, within 5.88% error percentage. The antenna fabrication, which is measured at a frequency of 433 MHz, obtained return loss -13.06 dB and VSWR 1.5, that meets the criteria of 1 ≤ VSWR ≤ 2. Quadrifilar Helix Antenna fabricated results can receive data from GPS sensors, temperature, humidity, air pressure, wind speed and wind direction of up to 9 kilometers. So that this antenna is suitable to be used as an antenna for inter-island UHF communication.

Metode Band-Limited Phase Only Correlation (BLPOC) untuk Identifikasi Plat Kendaraan Fitri Arnia; Syahrul Wahyudi; Siti Aisyah
Jurnal Rekayasa Elektrika Vol 10, No 1 (2012)
Publisher : Universitas Syiah Kuala

Digital image processing and computer vision technologies have developed so rapidly and have numerous applications. Automatic lisence plate recognition systems (ALPRS) based on those technologies are not exceptions. In general, the ALPRSs required several steps including image capturing, plate location searching, character segmentation and character recognition. Successful of the whole systems depended heavily on the used segmentation method. A common drawback of many segmentation techniques is that they are very sensitive to illumination variability. The paper proposed a method for license plate recognition based on correlation of phase componenet with limited bandwidth. The method is widely known as band-limited phase only correlation (BLPOC). The method compared input plate’s image with plate’s images in the database. Based on simulation, detection rate can achieve 90% if an appropriate threshold value was selected.

Desain Sistem Pendeteksi untuk Citra Base Sub-assembly dengan Algoritma Backpropagation Kasdianto Kasdianto; Siti Aisyah
Jurnal Rekayasa Elektrika Vol 13, No 1 (2017)
Publisher : Universitas Syiah Kuala

Object identification technique using machine vision has been implemented in industrial of electronic manufacturers for years. This technique is commonly used for reject detection (for disqualified product based on existing standard) or defect detection. This research aims to build a reject detector of sub-assembly condition which is differed by two conditions that are missing screw and wrong position screw using neural network backpropagation. The image taken using camera will be converted into grayscale before it is processed in backpropagation methods to generate a weight value. The experiment result shows that the network architecture with two layers has the most excellent accuracy level. Using learning rate of 0.5, target error 0.015%, and the number of node 1 of 100 and node 2 of 50, the successive rate for sub-assembly detection in right condition reached 99.02% while no error occurs in detecting the wrong condition of Sub-assembly (missing screw and wrong position screw).

IoT-Based Tracking System of Transceiver Location Siti Aisyah; Ahmad Fauzy Daulay; Heru Wijanarko; Daniel Sutopo Pamungkas; Kamarudin Kamarudin
Jurnal Rekayasa Elektrika Vol 17, No 4 (2021)
Publisher : Universitas Syiah Kuala

Object mapping based on location tracking methods has been widely used in various types of applications. Most tracking systems recently use existing technology and infrastructure such as satellite, cellular and wireless (RF) technology. These existing technologies are high-cost technology that needs authorized permission to be integrated to the novel technology. This research proposed a cheap point to point device technology to track a location of a transceiver using GPS in a portable infrastructure using Line of sight radio communication. The tracking system design is connected to the IoT system in order to be more accessible. The proposed system using GPS as an identifier of the transceiver coordinate location and 433MHz radio module as media communication between transmitter and receiver. The use of a 433MHz radio frequency module which is free-license adds value to the system so that it will be easily accessed. The design of portable and internet-based devices also gives a positive value in which the system does not have to depend on existing infrastructure and the system can also be reached even if it is placed in remote areas. The system test results show that the system can be well accessed up to a distance of 6.8 km.

IoT-Based Tracking System of Transceiver Location Siti Aisyah; Ahmad Fauzy Daulay; Heru Wijanarko; Daniel Sutopo Pamungkas; Kamarudin Kamarudin
Jurnal Rekayasa Elektrika Vol 17, No 4 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v17i4.22347

Object mapping based on location tracking methods has been widely used in various types of applications. Most tracking systems recently use existing technology and infrastructure such as satellite, cellular and wireless (RF) technology. These existing technologies are high-cost technology that needs authorized permission to be integrated to the novel technology. This research proposed a cheap point to point device technology to track a location of a transceiver using GPS in a portable infrastructure using Line of sight radio communication. The tracking system design is connected to the IoT system in order to be more accessible. The proposed system using GPS as an identifier of the transceiver coordinate location and 433MHz radio module as media communication between transmitter and receiver. The use of a 433MHz radio frequency module which is free-license adds value to the system so that it will be easily accessed. The design of portable and internet-based devices also gives a positive value in which the system does not have to depend on existing infrastructure and the system can also be reached even if it is placed in remote areas. The system test results show that the system can be well accessed up to a distance of 6.8 km.

Web-Based Item Tracking System Using RFID Azinurrachman Maulana; Siti Aisyah; Prasaja Wikanta
Jurnal Rekayasa Elektrika Vol 19, No 3 (2023)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v19i3.27050

Numerous tools, kits, and other items are utilized daily by many individuals in the college laboratories. Without a proper inventory record, there is a risk of missing and misplacing some items. The system for tracking items using Radio Frequency Identification (RFID) accessed via the website has been designed to track the location of each item in the laboratory using RFID technology. The primary objective of this system is to monitor and record inventory. Information regarding the inventory is stored in a database, which can be accessed to track inventory and review the history of specific items via the Internet. The designed system is capable of tracking and managing laboratory equipment inventory using RFID, accessible through a web-based platform.

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