Development of Field Control System of Automated Guided Vehicle Based on Wireless Local Area Network and CAN Bus

2013 ◽  
Vol 579-580 ◽  
pp. 792-797
Author(s):  
Yan Wang ◽  
Zhong Da Yu ◽  
Chen Xing Bao ◽  
Dong Xiang Shao
Keyword(s):  
Control System ◽  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Can Bus ◽  
Control Unit ◽  
Local Area ◽  
Automated Guided Vehicle ◽  
Area Network ◽  
Control Units

In this paper, we realize a real-time communication based on wireless local area network (WIFI) and controller area network (CAN) bus and develop a distributed control system for an automated guided vehicle (AGV). The system consists of two levels: (1) communication between AGVs and main computer based on WIFI, (2) communicationg between control units of AGV based on CAN bus. A real-time operating system μC/OS-II was used to control time, which significantly reduces the time for program and improves development efficiency. Finally, a small-size distributed AGV controller is developed as the main control unit of AGV and a distributed I/O system is developed based on it.

Equipment management in higher education using a WLAN framework

2005 ◽  
Vol 24 (3) ◽  
pp. 209-214
Author(s):  
Shun-Hsing Chen ◽  
Ching-Chow Yang ◽  
Jiun-Yan Shiau
Keyword(s):  
Higher Education ◽  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Data Gathering ◽  
Local Area ◽  
Equipment Management ◽  
Area Network ◽  
Time Service ◽  
Bar Code

This study establishes a comprehensive management information system (MIS) by using not only the real-time characteristics of wireless local area network (WLAN) technology for data reading and writing, but also the convenient data input/output provided by PDA's. This system is then applied in equipment management in higher education organizations, and a centralized center is used to manage the equipment of numerous departments. This wireless equipment management system, which was established to access data instantly, increases system performance in providing real-time service. Furthermore, the integration of bar code facility and real-time equipment management function via web-based technology for managing department equipment solves accuracy problems during the data gathering process. This system increases equipment management efficiency and reduces manpower costs.

scholarly journals WLAN Technologies for Audio Delivery

2007 ◽  
Vol 2007 ◽  
pp. 1-16 ◽  
Author(s):  
Nicolas-Alexander Tatlas ◽  
Andreas Floros ◽  
Thomas Zarouchas ◽  
John Mourjopoulos
Keyword(s):  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Experimental Methodology ◽  
Area Network ◽  
Audio Signals ◽  
Transmission Errors ◽  
Multiple Receivers ◽  
Synchronization Scheme

Audio delivery and reproduction for home or professional applications may greatly benefit from the adoption of digital wireless local area network (WLAN) technologies. The most challenging aspect of such integration relates the synchronized and robust real-time streaming of multiple audio channels to multipoint receivers, for example, wireless active speakers. Here, it is shown that current WLAN solutions are susceptible to transmission errors. A detailed study of the IEEE802.11e protocol (currently under ratification) is also presented and all relevant distortions are assessed via an analytical and experimental methodology. A novel synchronization scheme is also introduced, allowing optimized playback for multiple receivers. The perceptual audio performance is assessed for both stereo and 5-channel applications based on either PCM or compressed audio signals.

Intra-flow Contention Scheme for Improving QoS in WLAN

2017 ◽  
Vol 7 (8) ◽  
pp. 106
Author(s):  
Simranjeet Kaur ◽  
Maninder Singh
Keyword(s):  
Wireless Networks ◽  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
The Real ◽  
Wired Networks ◽  
Threshold Mechanism ◽  
Wireless Medium

With the increasing popularity of wireless local area network(WLAN),the demand for multimedia services encompassing VoIP, multimedia streaming and interactive gaming is increasing rapidly. The real-time services require stringent Quality of Service (QoS) guarantees for effective communication. While a lot of research has dealt with providing QoS support for real-time services in traditional wired networks, the shared and broadcast nature of the wireless medium necessitates the design of new solutions for wireless networks. In wireless networks, unlike wired networks, the communication from one node will consume  the bandwidth of the neighboring nodes and hence the  shared  bandwidth  can  be easily over-utilized. Therefore, to  provide  an  acceptable  level  of  QoS  for  the  real-time  services, it  is  necessary   to   control  the   utilization   of   the   shared  bandwidth. In this  paper , we  propose  an  efficient admission control scheme named Intra-flow contention scheme with CAC-OLSR routing protocol for WLAN networks which aims at  preserving  the  QoS  for  all  the  admitted  flows  by employing a low overhead  threshold  mechanism.  We  describe several  alternatives for the design of IAC and compare the performance of these alternatives using  simulation  results.

Method for collecting thermocouple data via secured shell over a wireless local area network in real time

2015 ◽  
Vol 86 (3) ◽  
pp. 035112 ◽  
Author(s):  
F. Arnold ◽  
I. DeMallie ◽  
L. Florence ◽  
D. O. Kashinski
Keyword(s):  
Real Time ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

PERANCANGAN ANTENA MIKROSTRIPRECTANGULAR

Jurnal Teknik ◽  
2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Heru Abrianto
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Wireless Lan ◽  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Dual Polarization ◽  
Feeding Technique

Microstrip antenna which designed with dual feeding at 2.4 GHz and 5.8 GHz can meet WLAN (Wireless Local Area Network) application.Antenna fabrication use PCB FR4 double layer with thickness 1.6 mm and dielectric constant value 4.4. The length of patch antenna according to calculation 28.63 mm, but to get needed parameter length of patch should be optimized to 53 mm. After examination, this antenna has VSWR 1.212 at 2.42 GHz and 1.502 at 5.8 GHz, RL -13.94 dB at 2.42 GHz and -20.357 dB at 5.8 GHz, gain of antenna 6.16 dB at 2.42 GHz and 6.91 dB at 5.8 GHz, the radiation pattern is bidirectional. Keywords : microstrip antenna, wireless LAN, dual polarization, single feeding technique

IEEE 802.11 Tutorial

2018 ◽  
Author(s):  
Kiramat
Keyword(s):  
Access Control ◽  
Ieee 802.11 ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Physical Layer ◽  
Media Access Control ◽  
Area Network ◽  
Media Access ◽  
Computer Communications

IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communications. Maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/MAN Standards Committee (IEEE 802). This document highlights the main features of IEEE 802.11n variant such as MIMO, frame aggregation and beamforming along with the problems in this variant and their solutions

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