Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userImproving the performance of data transfer in the hybrid low-speed networks that are used in the near-real time operating establishments
تحسين أداء شبكة نقل المعطيات الهجينة منخفضة السرعة و المستخدمة في المنشآت العاملة في الزمن شبه الحقيقي
1786
0 175
0
(
0
)
Authors
جمال خليفة( باحث )
Created by
Shamra Editor
Ask ChatGPT about the research
أدى انتشار تطبيق تقنيات نقل المعطيات الحديثة، في مجالات صناعية، و زراعية، و خدمية متنوعة إلى ضرورة نقل هذه المعطيات، ضمن أجزاء المنشآت، بفعالية و مرونة. يهدف البحث إلى تطبيق آلية هجينة، تعتمد على استخدام تقنية ZigBee، و تقنية CAN Bus معاً، بما يعطي أداء أفضل، وفقاً لمعايير الأداء التي يتطلبها عمل شبكات هذه المنشآت، في الزمن شبه الحقيقي. و مقارنة هذه الآلية مع الآليات المقترحة في أبحاث مشابهة. يعتمد الحل المقترح استخدام شبكات نقل معطيات هجينة، تعتمد على وصل الشبكات الجزئية، التي تعتمد تقنية CAN Bus، باستخدام عمود فقري لاسلكي يعتمد تقنية ZigBee. و اقتراح بنية مناسبة لبوابات العبور بين أجزاء الشبكة الهجينة. أثبتت النتائج أن الآلية المقترحة في هذا البحث أفضل مقارنة بأبحاث مشابهة، وفقاً لمعايير أداء مناسبة لمثل هذا النوع من الشبكات، بما يسمح لنا بالتوصية باستخدام هذه الآلية في التطبيقات الصناعية الخدمية. و قد اعتمد البحث على المحاكي الشبكي NS2 لتقييم النتائج و مقارنتها.
The spread of the modern data transfer techniques, in modern industrial and agricultural applications, and service areas, leads to the need to transfer this data effectively and flexibly, within installations parts. This research aims to apply the hybrid mechanism, based on the use of ZigBee technology, and CAN Bus together to ensure the best performance, in accordance with the performance indicators required by the networks of these facilities, in near-real time operation. The study attempts to compare this mechanism with other mechanisms proposed in similar research. The proposed solution supports the use of a hybrid data transfer networks, based on the internetworking of CAN Bus networks, using a backbone based on wireless ZigBee technology. This solution proposes an appropriate structure for gateways between the hybrid parts of the network. The research has concluded that the proposed mechanism preference, compared with the proposed mechanisms in similar research, according to the standards of performance indicators, is suitable for this kind of networks, as it allows us to recommend the use of this mechanism in the service and industrial applications. The NS2 network simulator is used to evaluate and compare the obtained results.
References used
G. Gaderer, P. Loschmidt, and A. Mahmood, A novel approach for flexible wireless automation in real-time environments, in Proc. IEEE Int. WFCS, Dresden, Germany, May 21–23, 2008, pp. 81–84
L. Rauchhaupt, System and device architecture of a radio based fieldbus—The RFieldbus system, in Proc. 4th IEEE Int. Workshop Factory Commun. Syst., 2002, pp. 185–192
Guddeti Kiran kumar Reddy, G. Kalaimagal. A Hybrid Network for Greenhouse Management Using CAN and ZIGBEE, IJERSS : Volume I - Issue IV, April 2014
rate research
Read More
Services that demanded by users via internet network are classified in two main
kinds, Services work in real time such as video and voice in real time and use UDP
protocol, and other services that work in non-real time such as web browsing (HTTP) a
nd
file transfer (FTP) which use TCP Protocol.
In this research, we study and analyze algorithms that enhance the quality of service
for various applications. For real time application, we use queues disciplines, which gives
high priority for these services and achieves minimum delay. For non-real time application,
we study congestion control algorithms, which achieve best performance for reliable
transfer process with existing the congestion in the network. We used OPNET 14.5
program for simulating various services via internet network. Simulation results show
achieving minimum delay for voice service, and achieving high transmission rate for FTP
application with existing of packets loss in the network.
تطبيقات الزمن الحقيقي
التحكم بالازدحام
Congestion Control
تطبيقات الزمن غير الحقيقي
قواعد الرتل
خوارزمية البداية البطيئة
تجنب الازدحام
خوارزمية إعادة الإرسال السريع و الاستعادة السريعة
Real Time application
non-real time application
Queue disciplines
Slow start algorithms
Congestion avoidance algorithms
Fast retransmit and Fast recovery
المزيد..
In this paper, we compare the performance of sporadic tasks scheduler algorithms on
a multi-core platform in order to determine the best algorithm in terms of a set of
parameters adopted by researchers in this field, which in turn gives us accurate
details
about the quality of such algorithms when applied to a set of sporadic tasks generated
according to uniformed Logarithmic probability distribution.
The simulation is done using Simso simulator, which proved the reliability of high
performance by the testimony of many researchers in this field, as it provides the
possibility of generating tasks according to specific probability distributions, and simulates
accurate details related to the characteristics of random tasks.
This study includes a work to improve the performance of brake shoe which is used in rail, where it depends on heat treatment to brake shoe which is made of gray cast iron, which makes the occurrence of the largest dissolve of the carbon in austeni
te. It allows obtaining a new crystalline structure of cast iron which has high toughness and high wear resistance. It increases the life service of brake shoe, and increases safety factor on rail way.
The test results were compared to the heat treated samples with samples that were not subjected to heat treatment, and treatment processes gave good results that allow to apply these operations on bits currently used on the railway network in Syria.
The study seeks to determine the real time in electrical power system, which consists of
generating, transmitting and distributing equipment by using redistributing active power of
electrical generators in order to organizing the overload operation
of electrical power
transmission line loading in such case that the spare loads of electrical station are not
covering the important and necessary loads at failures.
The most of laws related to electrical power systems design indicated to proper ratio of
real time of electrical power system equipment along with characteristics of probability
distributed functions in addition to statistics methods which give a high possibility to
reduce the real time of considered loads; so; this leads to the requested solutions which
reduce the damage of failures at any time.
This paper suggests improving the quality and performance of electrical grid by using Four
Chopper circuit in the DC –Link of the variable speed drive system with 12 pulse rectifier.
In addition, it analyses the effects on the ripple factor for bot
h current and voltage in DClink
and improving the system's stability.
For this study a variable speed drive system has been simulated and designed with the
proposed chopper and 12 pulse rectifiers. In order to confirm the ability of Using four -
quadrant chopper with rectifier circuits and its ability to improve the stability of the power
systems, a variable speed system has been simulated
Finally, A discussion of the results was introduced. The giving results show the advantages
of using the proposed chopper with variable speed drive systems.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
