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Komunikasi Suara Sinyal Digital Dengan Transmisi Frekuensi 2,4 Ghz Ahmad Wahyu Purwandi; Abdul Rasyid; Guntur Wahyu Sejati
Jurnal Teknologi Informasi dan Terapan Vol 6 No 2 (2019)
Publisher : Jurusan Teknologi Informasi Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jtit.v6i2.112

Abstract

The limitations of developing high-tech communication systems cause the area of people who can use this service to be uneven. One technology that can be used for areas not yet reached by this high-tech communication service is to use radio communication technology. Today radio communication technology continues to develop and produce an increasingly limited frequency spectrum. One way to improve the efficient use of available frequency spectrums is the transition from analog technology to digital technology. A very significant benefit in the use of digital technology is to save the use of radio frequency spectrum bandwidth with signal compression techniques. One device that still uses analog technology is a handy talky (HT). In addition to the lack of frequency spectrum efficiency, HT technology still requires a radio station license (ISR) for its use. This experiment designed a two-way digital audio communication system that was transmitted using the NRF24L01 radio frequency transceiver module on the 2.4Ghz frequency. Analog input data from the microphone will be converted into digital data through the ADC (Analog to Digital Converter) process using a microcontroller and the digital data that will be sent is first digitally modulated using GFSK modulation then transmitted digitally. On the other hand data that already contains voice information received again by another NRF24L01 transceiver is received by the Arduino microcontroller and then formed into a PWM signal (pulse width modulation) and then released to the speaker. So the method of using digital transmission can produce efficiencies in the frequency spectrum.
Analisis Kualitas Sinyal Menggunakan G-Nettrack Pro di Kota Malang Dania Sartika Anggraeni; Aisah Aisah; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 10 No 2 (2020): Vol 10 No 02 (2020) : Juni 2020
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v10i2.10

Abstract

Currently, wireless telecommunication networks (wireless) have developed very rapidly. To meet the demands of today's mobile users for data rate transfer and data services. The application of LTE technology has been intensively carried out in several countries, including Indonesia. The problem that is often faced is the limited coverage area of ??the Base Transceiver Station (BTS) so that not all areas can be covered by the 4G network. Based on this background, this thesis will analyze the performance and signal quality of LTE networks in Malang City. This measurement is done using the G-Nettrack Pro application and the parameters to be measured in this study are RSRQ, RSRP, SINR and Throughput. The location of eNodeB used for research is in 2 Districts in Malang City. From the measurement results of the drive test, it was found that the area of ??Sawojajar and Malang City had a max RSRP value of -64 dBm, a min RSRP of -105 dBm, an average RSRP of -83.2 dBm in the Very good category. RSRQ max -6 dB, min RSRQ -11 dB, and average RSRQ -10.05 dB in the Normal category. SINR max 25 dB, SINR min -3 dB, and SINR average 9.65 dB in the Good category. Uplink max 14546 kbps, Uplink min 0, and an average Uplink 19.96 kbps in the Very bad category. Downlink max 15564 kbps, Downlink min 0, and downlink average 28.6 kbps in the Very bad category.
RANCANG BANGUN SARUNG TANGAN PINTAR PENERJEMAH BAHASA ISYARAT INDONESIA (BISINDO) BERBASIS IOT wildana ahmad priadiyatna; Hudiono Hudino; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 10 No 4 (2020): Vol 10 No 04 (2020) : Desember 2020
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v10i4.21

Abstract

To make the general public can understand sign language, people who translate sign language are needed. Research with titled "Design of Smart Gloves for Indonesian Sign Language Translator (BISINDO) based on IoT" purpose to make easier for deaf people communicate daily with general public. Using Esp-32 microcontroller, flex sensor, and gyroscope sensor, to detect hand movements form sign language symbols. The results of translating symbols in the words will be display on smartphone application. The results of this study are in the form of smart gloves that can translate Indonesian Sign Language which is abbreviated as BISINDO. From the data of both right and left hand gloves, 26 letters and 5 different words can be combined. The results of mapping on right glove in letters A, B, L, M, W, Y, Z, have almost same flex sensor angle value, so that characters can appear, the mapping is carried out on MPU-6050 sensor. Tests were carried out 739 times on letter sign symbols and 180 times on word sign language symbols, the percentage of successful experiments on letters was 95% and the percentage of successful experiments on words was 73%.
Perancangan Aplikasi Voice Chat dengan Socket Programming pada Android untuk Jaringan Lokal Allyza Nanda Purwari; Nugroho Suharto; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 10 No 2 (2020): Vol 10 No 02 (2020) : Juni 2020
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v10i2.95

Abstract

Voice chat application is an application designed to replace the HT function on an Android smartphone. Besides being able to make voice calls, this application can be used to communicate with text. This application does not require cellular networks to communicate, simply by connecting to a network provided by an existing access point. The applications can be used without using a cellular network, when making an application requires a socket. Socket is an API that exists on Android studio software. While socket programming is a way to use socket components to create an application, one of which is a voice chat application. After being installed in android smartphones, each smartphone is connected to a network provided by an existing access point so that it can communicate by voice or text. Communication is carried out between smartphones with one another point to point. The test results can be concluded that this application can be used to communicate with voice and text, as long as the user is on the same network. This application can be used in all types of Android mobile phones for voice communication but communication with text can only be used on certain mobile brands.
Rancang Bangun Peralatan Pengukur Kuat Sinyal Seluler untuk Modul Praktikum Lab Telkom Wireless Anggita Sukma Nur Anggraini; Aisah Aisah; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 11 No 3 (2021): Vol. 11 No 03 (2021) : September 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v11i3.105

Abstract

This study was designed to facilitate data retrieval in order to monitor at any time via a smartphone with RSSI, RSRP, and RSRQ parameters. In this study, the test method was carried out on a predetermined route by comparing the measurement results on the measuring instrument and the G-Nettrack Pro. Data is taken at rest at 20 points, test drives with an average speed of 10 km/hour, and 20 km / hour using Telkomsel and Indosat providers. The RSSI measurement parameter for the Telkomsel provider has an average of -66.3 dBm on the G-Nettrack Pro software and on the measuring instrument the average value is -58.6 dBm. While the Indosat provider has an average value of -75.5 dBm on the G-Nettrack Pro software and on the measuring instrument the average value is -59.7 dBm. The RSRP measurement parameter for the Telkomsel provider has an average of -83.05 dBm on the G-Nettrack Pro software and on the measuring instrument the average value is -87.26 dBm. While the provider Indosat has an average value of -92.7 dBm on the G-Nettrack Pro software and on the measuring instrument the average value is -90.3 dBm. The RSRQ measurement parameter for the Telkomsel provider has an average of -7.73 dB on the G-Nettrack Pro software and on the measuring instrument the average value is -10.8 dB. While the Indosat provider has an average value of -12.89 dB on the G-Nettrack Pro software and on the measuring instrument the average value is -10.8 dB
Smartstrap Accessories Untuk Monitoring Kondisi Pasien Covid-19 saat Karantina Mandiri Berbasis Internet of Things Yoga Kholilul Akbar Pradana S; M. Abdullah Anshori; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 11 No 3 (2021): Vol. 11 No 03 (2021) : September 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v11i3.234

Abstract

The world is being hit by an outbreak of the Coronavirus Disease 2019 (COVID-19) pandemic in 2021. The number of Covid-19 cases continues to increase, especially in Indonesia itself, the number of Covid-19 sufferers is not proportional to the number of health workers. This tool aims to make simple accessories that are used to unite the conditions of patients infected with Covid-19 while undergoing independent activities, as well as being one of the efforts to implement social distancing. Based on tests conducted on 5 samples of people as patients, temperature measurements using the MLX90614 infrared sensor showed an average error of 0.12°C after being calibrated using a digital infrared thermometer. While the measurement of the pulse sensor MAX30100 after being calibrated with Oxymeter SO911 has an average error of 0.52 BPM in measuring heart rate in measuring oxygen saturation in the blood, showing an average error of 0.6%. For the Quality of Service (QoS) test results, the throughput value is 13,840 Kbps, packet loss is 0%, the average delay is 124,08649 ms and the jitter is 162.2 ms.
Analisis Kinerja Wireless Access Point Menggunakan Wifi Monitoring Tools Berbasis Raspberry Pi 3 Ganner Antero; Abdul Rasyid; Martono Dwi Atmadja
Jurnal Jaringan Telekomunikasi Vol 11 No 4 (2021): Vol 11 No 04 (2021) : Desember 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v11i4.245

Abstract

Mini computers are now advanced enough to be used in various fields. One of the mini computers that used is the Raspberry Pi 3. The Raspberry Pi 3 is a mini computer that has a feature for a wireless LAN. The wireless LAN feature on a mini computer can be used as a Wireless Access Point. The Raspberry Pi 3 can be an alternative to Wireless Access Point. However, mini computers have different capabilities with Wireless Access Points in general because they have different specifications. The purpose of this study was to determine the performance of the Raspberry Pi 3 based Wireless Access Point. The Raspberry Pi 3 is connected to a laptop that already connected to the internet via a LAN cable . Raspberry Pi 3 is configured as a Wireless Access Point (WAP) and programmed for data retrieval and monitoring in the form of traffic and user information displayed in a web display. In this study, the Raspberry Pi 3 was tested as a Wireless Access Point. The ability of the Raspberry Pi 3 as a Wireless Access Point is greatly influenced by the traffic carried out by the user. According to the test results, the Raspberry Pi 3 as a Wireless Access Point has a maximum limit of 13 users with high traffic loads, 17 users with medium loads and 27 with low loads. This shows that the Raspberry Pi 3 is worthy of being used as a Wireless Access point on a small scale.
Sistem Telemonitoring Kekeruhan dan pH Air Terhadap Pengurasan Serta Pemberian Kaporit Otomatis Dalam Kolam Renang Berbasis Kalam Achmad Nabila; Aisah Aisah; Abdul Rasyid
Jurnal Jaringan Telekomunikasi Vol 12 No 1 (2022): Vol. 12 No. 01 (2022) : March 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i1.256

Abstract

Swimming is an activity that popular. However without realized, the water of swimming pools have a not good enough quality, so that it becomes a medium for the transmission of various diseases in water. Monitoring quality of swimming pool water is a sanitation effort, namely by providing liquid chlorine to reduce organic substances and as disinfection against microorganisms. With this problem, the authors conducted research on telemonitoring system of turbidity and ph of water for draining and providing automatic chlorine in smartphone-based swimming pools. The system applied to a miniature swimming pool consisting of four sensors, namely pH sensor, turbidity sensor, ultrasonic sensor, waterflow sensor, the four sensors will send data to ESP32 to be processed according to the system. After ESP32 has finished processing it is then sent to firebase and an application on a smartphone to make water monitoring and control easier. The test results can be concluded that system designed using ESP32 as a microcontroller will process data from the pH sensor, turbidity sensor, waterflow sensor and ultrasonic sensor. Then the results of pH data have highest pH value of 7.9 and lowest of 6.9. Furthermore, results of the turbidity sensor data have a value of 0 NTU with highest ADC of 3827. The drain is automatically divided into 2, namely monitoring and controlling. Furthermore, the quality of WiFi network tested using Wireshark when carrying out data transmission process in terms of delay has average value of 0.188389435, packet loss is 1.178 and throughput is 7428 Kb/s.
Aplikasi RFID sebagai pendeteksi kehadiran pada perkuliahan terkait perhitungan kompensasi bagi mahasiswa Politeknik Negeri Malang Abdul Rasyid; Waluyo Waluyo; Lis Diana Mustafa; Ellen Kurniawati; Malika Aditya
JURNAL ELTEK Vol 19 No 1 (2021): ELTEK Vol 19 No 1
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (409.719 KB) | DOI: 10.33795/eltek.v19i1.259

Abstract

Abstrak Banyak cara untuk mengetahui keberadaan para dosen dan mahasiswa pada saat aktifitas perkuliahan, mulai dari cara lama menggunakan kertas lembar presensi, menggunakan barcode hingga cara yang sudah terkomputerisasi. Dan permasalahan yang sering timbul dalam Politeknik Negeri Malang adalah perhitungan absensi yang memakan waktu lama dan membutuhkan usaha ekstra untuk merekap data dari lembar absensi mahasiswa pada setiap kelas. Pada penelitian ini, sistem absensi akan menggunakan teknologi RFID (Radio Frequency Identification). Dimana setiap dosen dan mahasiswa akan memliki tag RFID dengan nomor identitas masing-masing yang akan digunakan untuk melakukan absensi. Tag RFID tersebut akan dipindai dan data yang didapat akan disimpan pada database berupa nama, tanggal, hari, jam hadir dan jam keluar. Dari data tersebut akan diolah shingga dapat diketahui jumlah kehadiran dosen, absensi, dan jumlah kompensasi dari mahasiswa. Pada penelitian ini kinerja, kecepatan, jarak jangkau dan ketahanan dari noise diteliti menggunakan aplikasi Wireshark. Dan didapatkan bahwa sistem dapat berjalan dengan waktu yang sangat singkat, waktu rata-rata yang digunakan untuk mengirimkan data adalah 447ms dan masih dapat bekerja meskipun terhalang oleh kertas dengan ketebalan dibawah 2.8cm. Sehingga dengan menggunakan aplikasi ini, proses absensi dan proses perhitungan kompensasi yang semula cukup lama dan membutuhkan usaha ekstra dapat dilakukan dengan cepat dan efisien. Abstract There are many ways to find out the whereabouts of lecturers and students during lecture activities, like using old method by writing in presence sheet paper, using barcodes or using computerized methods. And the problem that often arises in the State Polytechnic of Malang is the calculation of attendance which takes a long time and requires extra effort to recap the data from student attendance sheets in each class. In this study, the attendance system will use RFID (Radio Frequency Identification) technology. Where each lecturer and student will have an RFID tag with their respective identity numbers which will be used for attendance. The RFID tag will be scanned and the data obtained will be stored in the database in the form of name, date, day, time of attendance and time out. From this data, it will be processed so that it can be seen the number of lecturers' attendance, attendance, and the amount of compensation for each students. In this study, the performance, speed, range and resistance of noise were examined using the Wireshark application. And it was found that the system can run in a very short time, the average time used to transmit data is 447ms and can still work even though it is hindered by paper with a thickness below 2.8cm. so that by using this application, the attendance process and the process of calculating compensation, which were quite long and required extra effort, can be done quickly and efficiently.
IoT Microcontroller Application Prototype as Data Transceiver from Network to USB Device Rieke Wijayanti; M. Syirajuddin S; Abdul Rasyid; Ahmad Wilda Y
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 7 No 1 (2023): February 2023
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v7i1.4555

Abstract

Telecommunications technology in the early 2000s until now has experienced a rapid increase. Starting with complex devices to microcomputer devices that are able to connect to the network. With the development of networking technology, it will leave behind non-network-support devices that can still be used. The existence of previous research on "The interface between the IoT microcontroller (ESP32) and the Max3421e USB Host" can be taken advantage of developing a device that can facilitate a non-support-network device into a support-network electronic device. So that non-support-network electronic devices do not become electronic waste and can also become a device that can be used in the present. In this study, a prototype of a data receiver from WiFi was designed, then the data that has been received is reorganized into rows of data that are ready to be sent to non-support-network electronic devices. This developed tool uses an ESP32 IoT microcontroller connected to the USB Host max3421e which has been packaged in the form of a USB host shield module using SPI protocol communication. The result obtained is that data from the network can be sent correctly to the USB Host max3421e via the ESP32 microcontroller.