scholarly journals Sistem Kendali Perangkat Elektronik Jarak Jauh Berbasis Jaringan Nirkabel Menggunakan Secure Shell (SSH) dan robot Operating System (ROS)

2020 ◽  
Vol 7 (6) ◽  
pp. 1205
Author(s):  
Abdul Jalil
Keyword(s):  
Operating System ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Electronic Devices ◽  
Local Area ◽  
Remote Access ◽  
Raspberry Pi ◽  
Area Network ◽  
Air Conditioner ◽  
Robot Operating System

<p>Salah satu tantangan di era revolusi industri 4.0 adalah pengembangan sistem kontrol secara jarak jauh menggunakan koneksi jaringan nirkabel. Tujuan penelitian ini adalah membangun sistem kontrol perangkat elektronik jarak jauh dengan memanfaatkan jaringan <em>wireless tethering </em>pada <em>smartphone</em> menggunakan topologi <em>Wireless Local Area Network</em> (WLAN) dan <em>Robot Operating System</em> (ROS) sebagai perangkat lunak kontrol. Pemanfaatan <em>wireless tethering smartphone</em> untuk berbagi koneksi internet dapat dimanfaatkan untuk mengontrol perangkat elektronik yang terkoneksi ke Raspberry Pi. Koneksi jaringan <em>wireless tethering</em> memiliki arsitektur jaringan yang cukup sederhana jika dibandingkan dengan arsitektur pengontrolan jarak jauh lainnya, serta memiliki jarak jangkau koneksi yang cukup jauh dibandingkan dengan koneksi Bluetooth. Metodologi yang digunakan untuk mengontrol perangkat elektronik pada penelitian ini adalah menggunakan <em>Remote Access Control</em> (RAC) berbasis protokol SSH. Pemanfaatan <em>wireless tethering</em> dan aplikasi <em>mobile</em> SSH dapat digunakan untuk mengirim perintah ROS <em>message</em> dari <em>smartphone</em> ke Raspberry Pi untuk mengontrol pin GPIO Raspberry Pi agar aktif <em>high</em> atau aktif <em>low</em>. Pada saat ROS <em>message</em> mengirim perintah ke GPIO untuk aktif <em>high</em>, maka sistem akan memberikan instruksi kepada relay untuk menyalakan perangkat elektronik. Selanjutnya pada saat GPIO menerima perintah untuk aktif <em>low</em>, maka sistem akan memberikan instruksi kepada relay untuk mematikan perangkat elektronik. Hasil penelitian ini adalah <em>smartphone </em>android dapat digunakan untuk mengontrol perangkat elektronik seperti lampu, kipas angin, pemanas ruangan, dan <em>air conditioner</em> secara jarak jauh menggunakan jaringan WLAN berdasarkan perintah dari ROS <em>message</em>. Perangkat elektronik pada penelitian ini dapat di kontrol secara efektif pada jarak 20 meter di dalam ruangan dan 40 meter di area bebas hambatan.</p><p> </p><p class="Judul2"><strong><em>Abstract</em></strong></p><p class="Abstract"><em>One of the challenges in the Industrial Revolution 4.0 is the development of control systems by remotely using a wireless network connection. This study aims to build a control system for controlling the electronic devices by remotely with the utilization of wireless tethering network in the smartphone used Wireless Local Area Network (WLAN) topology and Robot Operating System (ROS) as software for the controller. Utilization of wireless tethering in the smartphone for share the internet connection can be used for control the electronic devices that connected to the Raspberry Pi. The connection of wireless tethering has a simple architecture when compared with the other architecture of the control system by remotely, it then has a long-range connection when compared to the Bluetooth connection. The methodology has used to manage the electronic devices in this study is used Remote Access Control (RAC) based on SSH protocol. The utilization of wireless tethering and mobile SSH can be used to sends ROS message command from smartphone to the Raspberry Pi to control the Raspberry Pi GPIO pin to active high or active low. When android smartphone send ROS message command to the Raspberry Pi to make the GPIO to active high, the system will instruct the relay to turn on the electronic devices. Then when GPIO accepts the instruction to active low, the system will instruct the relay to turn off the electronic devices. The result of this study is that android smartphone can be used to control the electronic devices such as a lamp, fan, heater, and air conditioner by remotely used WLAN network and command from ROS message. The electronic devices on this study can be controlled by effectively with the distance of 20 meters in the rooms and 40 meters at the outside area. </em></p><p class="Judul2"><strong><em><br /></em></strong></p>

scholarly journals WISE game: wireless interactive software educational game

2021 ◽  
Vol 23 (3) ◽  
pp. 1357
Author(s):  
Muel Fred L. Ruiz ◽  
Rica I. Esclada ◽  
Jannica H. Balderama ◽  
Anzel Anne I. Aguirre ◽  
Ma. Nancy I. Cutin ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Educational Game ◽  
Raspberry Pi ◽  
Area Network ◽  
Interactive Software ◽  
School Students ◽  
Digital Platforms ◽  
Metro Manila

This study presents the development of a wireless, interactive, educational (WISE) game that incorporates the use of smartphones for reviewing lessons that might suit the standards of the Philippine government’s education department. It is easier today to engage students using digital platforms for education using interactive digital games. In this study, the users can play the game by connecting the smartphones to the prototype through wireless local area network. It consists of two types of cards: power cards which contribute excitement to the game, and question cards which contain questions to be answered by the players. The prototype is an integration of the following components: Raspberry Pi 3B, RFID reader and cards, and speakers. A graphical user interface where the players interact with the game was created using scripting languages, such as PHP, and JavaScript. The project was evaluated by different grade school students of Metro Manila, Philippines. The results of users’ evaluation show that the prototype is accessible and effective for use based on functionality and that the project can also serve as a tool for lesson reviews. Future development of WISE game includes its integration and compatibility to different operating systems with larger databases and accessibility.

scholarly journals Dynamic Access-Point Configuration Approach for Elastic Wireless Local-Area Network System and Its Implementation Using Raspberry Pi

2018 ◽  
Vol 8 (2) ◽  
pp. 254-281 ◽  
Author(s):  
Md. Manowarul Islam ◽  
Nobuo Funabiki ◽  
Minoru Kuribayashi ◽  
Sumon Kumar Debnath ◽  
Kwenga Ismael Munene ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Access Point ◽  
Local Area ◽  
Raspberry Pi ◽  
Network System ◽  
Area Network ◽  
Point Configuration

scholarly journals Dynamic Bandwidth Allocation for Internet of Things System Using Elastic Wireless Local Area Network

2021 ◽  
Vol 17 (3) ◽  
Author(s):  
I Putu Sudharma Yoga ◽  
Gede Sukadarmika ◽  
Linawati .
Keyword(s):  
Internet Of Things ◽  
Bandwidth Allocation ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Technological Development ◽  
Local Area ◽  
Sensor Technology ◽  
Raspberry Pi ◽  
Area Network ◽  
Dynamic Bandwidth

Rapid technological development, triggering various applications development that are increasingly innovative. One of them is the Internet of Things (IoT) system that makes human works easier and more effective. Along with sensor technology development in monitoring and controlling through IoT systems, a mechanism is needed to manage bandwidth so that IoT system can function optimally, especially in buildings designated as public areas. Smart building supported by various integrated sensors to maintain safety and comfort in the area. This study proposes the application of Elastic WLAN as a model for dynamic bandwidth management in IoT systems. In this model, IoT bandwidth changes automatically according to the number of traffic measurements for each IoT connected to the network As an effort to determine the performance of the elastic WLAN mechanism, this study succeeded in developing a prototype IoT device that implements Elastic WLAN on an Access-Point Raspberry Pi by using two temperature sensors placed in separate locations. The system successfully allocates bandwidth to each IoT according to the amount of data input from each temperature sensor installed. The higher the amount of data captured by the sensor, the system will automatically allocate the higher bandwidth to the sensor system, and vice versa.

scholarly journals PENERAPAN KECERDASAN BUATAN PADA GAME “AIR STRIKE STTA” BERBASIS CLIENT SERVER PADA ANDROID

Compiler ◽  
2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Eko Teguh Prasetyo ◽  
Nurcahyani Dewi Retnowati
Keyword(s):  
Operating System ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Data Traffic ◽  
Client Server ◽  
Traffic Lane ◽  
Unity 3D ◽  
Android Operating System

Smartphones with Android operating system is one proof that the very quickly progress of technology. Functions and services on Android smartphones is no longer just for communication but also for entertainment such as games. Application are made in this research is a game that applies artificial intelligence with pathfinding techniques and can be played in single player and two players using the wireless local area network as data traffic lane with distribution techniques client server and can be played on smartphones with Android operating system. Software used to create this game is the Unity 3D engine. Unity 3D is a game creator software that is very powerful at this time. By using Unity 3D can make a game in a variety of devices, one of which is on a smartphones with Android operating system. With the application of this game can be a means the entertainment for anybody.

A Generalized TCP Fairness Control Method for Multiple-Host Concurrent Communications in Elastic WLAN System Using Raspberry Pi Access Point

2020 ◽  
Vol 11 (2) ◽  
pp. 18-40
Author(s):  
Rahardhita Widyatra Sudibyo ◽  
Nobuo Funabiki ◽  
Minoru Kuribayashi ◽  
Kwenga Ismael Munene ◽  
Hendy Briantoro ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Control Method ◽  
Access Point ◽  
Local Area ◽  
Packet Transmission ◽  
Raspberry Pi ◽  
Area Network ◽  
Traffic Demand ◽  
Tcp Fairness

The IEEE802.11n wireless local-area network (WLAN) has been widely adopted due to the flexible coverage and lower installation cost. However, the TCP throughput unfairness was detected when multiple hosts concurrently communicate with a single access-point (AP). Previously, the authors proposed the TCP fairness control method for only two hosts in the elastic WLAN system using Raspberry Pi AP, which dynamically adapts the topology according to the traffic demand. The delay is introduced in the packet transmission to the faster host from the AP, which is optimized by the PI feedback control such that the measured throughput becomes equal between the hosts. In this paper, the authors proposed a generalization of this method for any number of hosts by newly introducing the target throughput as the equal goal among the hosts. It is dynamically updated using the measured throughputs. The effectiveness of the proposal is verified through experiments using the elastic WLAN system testbed with one AP and up to four hosts.

Research on Radio Frequency Assignment Mechanism of the RoFSO Network Based on Site-Specific Cognition and Utility Function

2012 ◽  
Vol 241-244 ◽  
pp. 2439-2444
Author(s):  
Ya Fei Li ◽  
Peng Yue ◽  
Chuan He
Keyword(s):  
Radio Frequency ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Remote Access ◽  
Frequency Assignment ◽  
Area Network ◽  
Allocation Mechanism ◽  
Site Specific ◽  
Space Optics

For the problem of the throughput degradation and fairness deterioration of the conventional radio frequency (RF) allocation mechanism in “hot point” areas, this paper presented a novel RF allocation mechanism using radio over free space optics (RoFSO) technology. The proposed algorithm contained initial RF assignment and optimal RF assignment. The initial RF allocation was built on the distribution of adjacent remote access units (RAUs). In addition, the optimal RF allocation includes RF switching and RF scheduling, both of which were designed based on site-specific cognition of stations. Through the analysis of simulation results, we know that our proposed algorithm in RoFSO network outperform the conventional RF allocation algorithm in wireless local area network (WLAN) by 350%, 45%, and 90% for average goodput of each user, fairness index of entire network and average frame service delay (FSD), respectively.

Transmission Power Optimization of Concurrently Communicating Two Access Points in Wireless Local Area Network

2020 ◽  
Vol 11 (4) ◽  
pp. 1-25
Author(s):  
Hendy Briantoro ◽  
Nobuo Funabiki ◽  
Minoru Kuribayashi ◽  
Kwenga Ismael Munene ◽  
Rahardhita Widyatra Sudibyo ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Power Optimization ◽  
Local Area Network ◽  
Access Point ◽  
Local Area ◽  
Raspberry Pi ◽  
Area Network ◽  
Transmission Power ◽  
Wireless Internet ◽  
Coverage Area

Currently, the IEEE 802.11 wireless local-area network (WLAN) has been prevalent around the world due to the advantages of mobility, flexibility, and scalability. WLAN offers the wireless internet-access method through an access-point (AP) at homes, schools, or offices. When multiple APs are deployed in the network field, the proper transmission power of each AP is essential to improve the performance, considering the coverage area, transmission capacity, and interference. In this paper, the authors study the transmission power optimization of concurrently communicating two APs in WLAN. Based on extensive experiment results, the authors propose a method of selecting the best power for each AP from the signal-to-noise ratio (SNR) of receiving signal strength (RSS). For evaluations, the authors implemented the proposed method on the elastic WLAN system testbed using Raspberry Pi for APs and conducted experiments for nine network topologies in two buildings at Okayama University. The results show that the proposal always selects the best power in any topology.

scholarly journals Coexistence issues for a 2.4 GHz wireless audio streaming in presence of bluetooth paging and WLAN

2015 ◽  
Vol 13 ◽  
pp. 181-188
Author(s):  
F. Pfeiffer ◽  
M. Rashwan ◽  
E. Biebl ◽  
B. Napholz
Keyword(s):  
Ieee 802.11 ◽  
High Speed ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Electronic Devices ◽  
Local Area ◽  
Area Network ◽  
Digital Audio ◽  
Coexistence Issues ◽  
The Impact

Abstract. Nowadays, customers expect to integrate their mobile electronic devices (smartphones and laptops) in a vehicle to form a wireless network. Typically, IEEE 802.11 is used to provide a high-speed wireless local area network (WLAN) and Bluetooth is used for cable replacement applications in a wireless personal area network (PAN). In addition, Daimler uses KLEER as third wireless technology in the unlicensed (UL) 2.4 GHz-ISM-band to transmit full CD-quality digital audio. As Bluetooth, IEEE 802.11 and KLEER are operating in the same frequency band, it has to be ensured that all three technologies can be used simultaneously without interference. In this paper, we focus on the impact of Bluetooth and IEEE 802.11 as interferer in presence of a KLEER audio transmission.

scholarly journals PERANCANGAN DAN IMPLEMENTASI SERVER VOICE OVER INTERNET PROTOKAL (VOIP) DENGAN TRIXBOX PADA WIRELESS LOCAL AREA NETWORK MENGGUNAKAN SMARTPHONE

2015 ◽  
Vol 6 (2) ◽  
pp. 87
Author(s):  
Muhammad Iqbal Nahwi ◽  
Edy Victor Haryanto ◽  
Budi Triandi
Keyword(s):  
Operating System ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Free Software ◽  
Area Network

<p>ABSTRAK <br /> <br />Pada saat ini data telekomunikasi dalam kehidupan manusia sangatlah penting, baik untuk berhubungan antara manusia dalam hal pemenuhan kebutuhan dan informasi maupun hiburan. Sedangkan secara nyata, utuk biaya komunikasi di negara indonesia masih termasuk mahal. Pemanfaatan teknologi VoIP dalam komunikasi yang murah, aman dengan kualitas yang cukup baik sangat tepat untuk diterapkan di negara ini. Pada teknologi VoIP ini berkomunikasi melalui telepon tidak hanya bisa dilakukan dengan mengandalkan pesawat telepon konvensional maupun handphone, namun melalui jaringan internet juga bisa dilakukannya. Dalam penelitian ini metodologi yang digunakan adalah mengimplementasi sistem VoIP pada linux trixbox. Infrastruktur jaringan VoIP yang dirancang menggunakan protokol SIP(session initiation protokol) <br />sebagai protokol komunikasi, memanfaatkan free software linux Trixbox sebagai operating system, asteriks sebagai aplikasi server, dan di sisi client menggunakan softphone X-lite. aplikasi Keyyo VoIP digunakan untuk client pada smartphone.</p>

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