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2012 Brazilian Symposium on Computing System Engineering最新文献

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Passive Monitoring Software Tool for Evaluation of Deployed WirelessHART Networks 用于评估已部署无线shart网络的无源监测软件工具
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-05 DOI: 10.1109/SBESC.2012.11
G. Künzel, J. Winter, I. Müller, C. Pereira, J. Netto
{"title":"Passive Monitoring Software Tool for Evaluation of Deployed WirelessHART Networks","authors":"G. Künzel, J. Winter, I. Müller, C. Pereira, J. Netto","doi":"10.1109/SBESC.2012.11","DOIUrl":"https://doi.org/10.1109/SBESC.2012.11","url":null,"abstract":"Deployment of Wireless Sensor Networks in real-world control and monitoring applications may reveal performance problems caused by several factors. To track down such problems, it is necessary to inspect the conditions of network and nodes after deployment. In this paper, we discuss a monitoring software architecture for inspection of WirelessHART networks. Capture of information is done in a passive way using sniffers deployed in the network area. Messages are decoded, decrypted, filtered and then visualized in a graphic interface. A WirelessHART network was deployed in a laboratory for performance evaluation using the developed tool.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117195870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Study of Bluetooth Application for Remote Controlling of Mobile Embedded Systems 蓝牙在移动嵌入式系统远程控制中的应用研究
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-05 DOI: 10.1109/SBESC.2012.48
Jorge Amadeu Alves Pereira da Silva, Daniel Mathias Silva dos Santos, Vinicius Carvalho Marques, Katielle Dantas Oliveira, Thiago Oliveira Rodrigues, R. G. F. Texeira, J. W. M. Menezes
{"title":"A Study of Bluetooth Application for Remote Controlling of Mobile Embedded Systems","authors":"Jorge Amadeu Alves Pereira da Silva, Daniel Mathias Silva dos Santos, Vinicius Carvalho Marques, Katielle Dantas Oliveira, Thiago Oliveira Rodrigues, R. G. F. Texeira, J. W. M. Menezes","doi":"10.1109/SBESC.2012.48","DOIUrl":"https://doi.org/10.1109/SBESC.2012.48","url":null,"abstract":"This paper presents the development of an application for the operational system Android (Android OS) with the intent of controlling embedded systems via Bluetooth. The system to be operated is a teleoperated vehicle for remote sensoring and environmental damage detection. This prototype remotecontrolled vehicle was developed using the open-source development platform Arduino. This prototype has three wireless communication modules: one for Bluetooth communication, another for Zigbee communication, and the last one is a infra-red signal receiver. The results in laboratory tests and in real application field showed the prototype was successful, referring to its initial objectives, controlling locomotion system and high level human-machine interface.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122344712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Sufficient Schedulability Tests for EDF-Scheduled Real-Time Systems under Interference of a High Priority Task 高优先级任务干扰下edf调度实时系统的充分可调度性测试
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-05 DOI: 10.1109/SBESC.2012.33
-. J.AugustoSantos, George Lima
{"title":"Sufficient Schedulability Tests for EDF-Scheduled Real-Time Systems under Interference of a High Priority Task","authors":"-. J.AugustoSantos, George Lima","doi":"10.1109/SBESC.2012.33","DOIUrl":"https://doi.org/10.1109/SBESC.2012.33","url":null,"abstract":"We provide four new schedulability tests for a scheduling model according to which there is a high priority task concurrently executed with a set of EDF-scheduled tasks. All tests are proved correct and have their performance evaluated by simulation.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122789772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A Complete H.264 Motion Estimation Architecture 一个完整的H.264运动估计架构
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-05 DOI: 10.1109/SBESC.2012.29
Hadley M. Siqueira, A. Lopes, Victor Marinho, E. Corrêa
{"title":"A Complete H.264 Motion Estimation Architecture","authors":"Hadley M. Siqueira, A. Lopes, Victor Marinho, E. Corrêa","doi":"10.1109/SBESC.2012.29","DOIUrl":"https://doi.org/10.1109/SBESC.2012.29","url":null,"abstract":"H.264 is the state of the art regarding video compression standards. One of its main compression tools is motion estimation with fractional motion support. Although it is the tool that offers the best gain on data compression, it also requires a lot of computation power. The motion estimation also requires a very high bandwidth with the external memory to perform its operations. In this paper, we present a complete motion estimation architecture that reduces memory bandwidth and is capable of performing full, half and quarter pixel precision refinement. Results show that the proposed architecture can achieve a display rate of 30 frames per second for HD 720p resolution with an operation frequency of 102 MHz.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123080340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WSN Experiment and a Grid-Based Network Architecture Proposal WSN实验及基于网格的网络架构方案
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-05 DOI: 10.1109/SBESC.2012.53
F. Shubeita, Leonardo A. Amaral, C. Marcon, A. Vit
{"title":"WSN Experiment and a Grid-Based Network Architecture Proposal","authors":"F. Shubeita, Leonardo A. Amaral, C. Marcon, A. Vit","doi":"10.1109/SBESC.2012.53","DOIUrl":"https://doi.org/10.1109/SBESC.2012.53","url":null,"abstract":"This paper presents an experiment using a Wireless Sensor Network (WSN) in a rural area with focus on precision agriculture. The experiment lasted 90 days and during this time several events were analyzed highlighting the quality of the communication and events of the environment that affected the normal operation of the WSN. This experiment was the starting point for the proposition of a communication architecture model applied to WSN based on Grid.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126333424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Development of a Low Cost Programmable Logic Controller 一种低成本可编程逻辑控制器的研制
2012 Brazilian Symposium on Computing System Engineering Pub Date : 2012-11-01 DOI: 10.1109/SBESC.2012.18
Marcel Seiji Kay, F. Iaione, A. T. R. Barbosa, R. Sacchi, Valguima Odakura
{"title":"Development of a Low Cost Programmable Logic Controller","authors":"Marcel Seiji Kay, F. Iaione, A. T. R. Barbosa, R. Sacchi, Valguima Odakura","doi":"10.1109/SBESC.2012.18","DOIUrl":"https://doi.org/10.1109/SBESC.2012.18","url":null,"abstract":"Some Brazilian regions have an agricultural vocation and are undergoing on a significant industrialization process, which is mainly caused by the installation of biofuel industries. Therefore, demand for agricultural and industrial automation will be great in the next years. The aim of this study is to develop a low cost small module (hardware card), for use in the automation of simple machines and equipments. This programmable logic controller (PLC) will be part of an open platform that also contains a free software tool for programming PLC in C language, and an online tutorial with detailed instructions about building and programming the system. Thus, students and professionals can automate machinery and equipment in a simple and low cost way. This article shows the electronic design of the PLC, its programming and tests results of the breadboard setup.","PeriodicalId":112286,"journal":{"name":"2012 Brazilian Symposium on Computing System Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125055919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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