Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453890
A. Anwar, M. Ali, R. Dougal
We report conceptual design and analysis of a supercapacitor-based voltage support system for a 13.8KV AC power system. The power source has been designed to ride through a 2s voltage sag caused either by high load demand or remote system fault. The simulation model currently supports study of both power injection and power absorption. Response of the SC storage to a line fault has also been studied and compared with the response due to high load demand. Simulation results verified the effectiveness of the integrated system and forms the basis for further development of a more robust system in terms of power management.
{"title":"Supercapacitor energy storage for low-voltage ride through in a 13.8KV AC system","authors":"A. Anwar, M. Ali, R. Dougal","doi":"10.1109/SECON.2010.5453890","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453890","url":null,"abstract":"We report conceptual design and analysis of a supercapacitor-based voltage support system for a 13.8KV AC power system. The power source has been designed to ride through a 2s voltage sag caused either by high load demand or remote system fault. The simulation model currently supports study of both power injection and power absorption. Response of the SC storage to a line fault has also been studied and compared with the response due to high load demand. Simulation results verified the effectiveness of the integrated system and forms the basis for further development of a more robust system in terms of power management.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124403068","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453820
G. F. Alapatt, W. Harrell, Y. Freeman, P. Lessner
I-V and I-time measurements to characterize the Polymer-Dielectric interface of Tantalum/Ta2O5/Polymer capacitors were performed. The interface consists of a conducting polymer — PEDOT (poly 3,4-ethylenedioxythiophene) and Ta2O5. The leakage current measurements on these capacitors were found to be consistent with Poole-Frenkel Emission in the bulk of the dielectric.
{"title":"Observation of the Poole-Frenkel effect in Tantalum Polymer capacitors","authors":"G. F. Alapatt, W. Harrell, Y. Freeman, P. Lessner","doi":"10.1109/SECON.2010.5453820","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453820","url":null,"abstract":"I-V and I-time measurements to characterize the Polymer-Dielectric interface of Tantalum/Ta<inf>2</inf>O<inf>5</inf>/Polymer capacitors were performed. The interface consists of a conducting polymer — PEDOT (poly 3,4-ethylenedioxythiophene) and Ta<inf>2</inf>O<inf>5</inf>. The leakage current measurements on these capacitors were found to be consistent with Poole-Frenkel Emission in the bulk of the dielectric.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121678924","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453910
Xiaohe Wu, M. Obeng, Jing Wang
With rapid advances in science and technology, the concept of Microcontroller Unit (MCU) and the practice of embedded systems design are constantly changing and evolving, which present unique challenges to engineering education in related areas. To address this problem, in this paper, a project-centered pedagogy is proposed and its practice reported. The central idea of the proposed strategy is to develop a series of projects each focusing a particular issue or topic in the subject, then, after outlining the basic principles, it is up to the students to find out all the necessary details and weave all their acquired information and know-how into easily presentable outcomes to meet the requirements of each project. Upon completing the series of projects, students become adept in finding required information and conducting necessary research to produce desired project outcomes. In the mean time, students are better trained to adapt to the ever changing technologies and industry practices, and be better prepared to face the real world upon graduation.
{"title":"Project-centered pedagogy and practice in teaching microprocessor and embedded systems design to undergraduate students","authors":"Xiaohe Wu, M. Obeng, Jing Wang","doi":"10.1109/SECON.2010.5453910","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453910","url":null,"abstract":"With rapid advances in science and technology, the concept of Microcontroller Unit (MCU) and the practice of embedded systems design are constantly changing and evolving, which present unique challenges to engineering education in related areas. To address this problem, in this paper, a project-centered pedagogy is proposed and its practice reported. The central idea of the proposed strategy is to develop a series of projects each focusing a particular issue or topic in the subject, then, after outlining the basic principles, it is up to the students to find out all the necessary details and weave all their acquired information and know-how into easily presentable outcomes to meet the requirements of each project. Upon completing the series of projects, students become adept in finding required information and conducting necessary research to produce desired project outcomes. In the mean time, students are better trained to adapt to the ever changing technologies and industry practices, and be better prepared to face the real world upon graduation.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121932433","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453898
R. L. Jenkins, B. Dewberry, L. Joiner
In this paper, we have enhanced ultra-wideband (UWB) radar signal-to-noise ratio (SNR) by applying a wavelet transform (WT) based matched filter. The wavelet transform algorithm (WTA) provided enhanced reliability relative to conventional background template subtraction (BTS) approach, increasing reliability detecting targets in the nonlinear close in (<50cm) and at the maximum distance tested (29m.) We extrapolated the WTA can support a maximum radar range of 60m, about twice that available with the conventional constant false alarm rate (CFAR) methods.
{"title":"Wavelet analysis of impulse ultra-wideband radar","authors":"R. L. Jenkins, B. Dewberry, L. Joiner","doi":"10.1109/SECON.2010.5453898","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453898","url":null,"abstract":"In this paper, we have enhanced ultra-wideband (UWB) radar signal-to-noise ratio (SNR) by applying a wavelet transform (WT) based matched filter. The wavelet transform algorithm (WTA) provided enhanced reliability relative to conventional background template subtraction (BTS) approach, increasing reliability detecting targets in the nonlinear close in (<50cm) and at the maximum distance tested (29m.) We extrapolated the WTA can support a maximum radar range of 60m, about twice that available with the conventional constant false alarm rate (CFAR) methods.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124979427","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453875
M. Ali, R. Dougal
Conventional braking resistor (BR) method employing a fixed insertion period does not work well to stabilize the wind generator system for different types of faults. This paper proposes a closed-loop control strategy of the braking resistor based on thyristor technology to stabilize the wind generator system. The performance of the proposed braking resistor is evaluated in detail considering both balanced and unbalanced types of temporary and permanent faults in the system. A comparison is made between the performance of the proposed braking resistor and that of the conventional braking resistor employing a fixed insertion period. Simulation results show that the proposed braking resistor is very effective to stabilize the wind generator system in case of both balanced and unbalanced types of transient and permanent faults. Also, the performance of the proposed braking resistor method is much better than that of the conventional method.
{"title":"A closed-loop control based braking resistor for stabilization of wind generator system","authors":"M. Ali, R. Dougal","doi":"10.1109/SECON.2010.5453875","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453875","url":null,"abstract":"Conventional braking resistor (BR) method employing a fixed insertion period does not work well to stabilize the wind generator system for different types of faults. This paper proposes a closed-loop control strategy of the braking resistor based on thyristor technology to stabilize the wind generator system. The performance of the proposed braking resistor is evaluated in detail considering both balanced and unbalanced types of temporary and permanent faults in the system. A comparison is made between the performance of the proposed braking resistor and that of the conventional braking resistor employing a fixed insertion period. Simulation results show that the proposed braking resistor is very effective to stabilize the wind generator system in case of both balanced and unbalanced types of transient and permanent faults. Also, the performance of the proposed braking resistor method is much better than that of the conventional method.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125031314","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453873
A. Kashyap, B. Bing
This paper presents methods to improve the efficiency and performance of high-definition (HD) video streaming over the Internet. Traditionally, the approach from the a video server has been to send the contents of the entire video stream as quickly as possible, which we shall refer to in this paper as “rapid” downloading. Rapid downloading does not field optimal bandwidth usage for sending variable bit rate (VBR) HD videos, and may result in a high number of packet losses over the Internet when peak rates are demanded by the video stream. We propose a solution that focuses on “progressive” downloading where the stream is sent in progressive blocks. With VBR videos, particularly 1080p HD videos encoded using H.264, this approach provides better buffer and bandwidth utilization. We will also show that with video smoothing and compound TCP, further performance gains can be achieved.
{"title":"Efficient HD video streaming over the internet","authors":"A. Kashyap, B. Bing","doi":"10.1109/SECON.2010.5453873","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453873","url":null,"abstract":"This paper presents methods to improve the efficiency and performance of high-definition (HD) video streaming over the Internet. Traditionally, the approach from the a video server has been to send the contents of the entire video stream as quickly as possible, which we shall refer to in this paper as “rapid” downloading. Rapid downloading does not field optimal bandwidth usage for sending variable bit rate (VBR) HD videos, and may result in a high number of packet losses over the Internet when peak rates are demanded by the video stream. We propose a solution that focuses on “progressive” downloading where the stream is sent in progressive blocks. With VBR videos, particularly 1080p HD videos encoded using H.264, this approach provides better buffer and bandwidth utilization. We will also show that with video smoothing and compound TCP, further performance gains can be achieved.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130810490","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453851
Kailash Toshniwal, J. Conrad
This paper describes a web based sensor monitoring system on two different platforms: a Linux based computer and an embedded Linux-based single board computer. In order to accomplish this, we have used a 'LabJack' hardware interface device and Technologic System's 'TS-7400' single board computer. The software design uses open source software packages including the MySQL database server, PHP sever side scripting and Debian based Linux 2.6. The aim of this project was to make a cost effective network-based sensor monitoring system which is portable for various applications.
{"title":"A web-based sensor monitoring system on a Linux-based single board computer platform","authors":"Kailash Toshniwal, J. Conrad","doi":"10.1109/SECON.2010.5453851","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453851","url":null,"abstract":"This paper describes a web based sensor monitoring system on two different platforms: a Linux based computer and an embedded Linux-based single board computer. In order to accomplish this, we have used a 'LabJack' hardware interface device and Technologic System's 'TS-7400' single board computer. The software design uses open source software packages including the MySQL database server, PHP sever side scripting and Debian based Linux 2.6. The aim of this project was to make a cost effective network-based sensor monitoring system which is portable for various applications.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131832377","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453913
Sameer S. Kulkani, John Moriarty, C. Hung
In this paper we conduct an experiment to study the effects of multiple block sizes in face images using the Discrete Cosine Transform (DCT) algorithm. Facial features are extracted from each block using the DCT algorithm. These features are then combined to form a feature vector for facial recognition. The goal of the paper is to discover if there is an underlying principle for determining the best block size for increasing the recognition accuracy with the DCT, when it is being used for facial recognition. The support vector machine (SVM) algorithm is used for facial recognition experiments.
{"title":"The impact of image block size on face feature extraction using Discrete Cosine Transform","authors":"Sameer S. Kulkani, John Moriarty, C. Hung","doi":"10.1109/SECON.2010.5453913","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453913","url":null,"abstract":"In this paper we conduct an experiment to study the effects of multiple block sizes in face images using the Discrete Cosine Transform (DCT) algorithm. Facial features are extracted from each block using the DCT algorithm. These features are then combined to form a feature vector for facial recognition. The goal of the paper is to discover if there is an underlying principle for determining the best block size for increasing the recognition accuracy with the DCT, when it is being used for facial recognition. The support vector machine (SVM) algorithm is used for facial recognition experiments.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132716168","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453887
N. Kang, Y. Liao
This paper presents a general approach to locate any type of fault on either a single-circuit or a double-circuit transmission line when only current magnitude measurements are available. Emphasis is given to double-circuit line. The distinctive feature of the proposed fault location method is the current measurements employed can be from one or more branches, which are not restricted to those of the faulted section. Evaluation studies based on EMTP simulation have shown quite accurate results.
{"title":"Fault location estimation using current magnitude measurements","authors":"N. Kang, Y. Liao","doi":"10.1109/SECON.2010.5453887","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453887","url":null,"abstract":"This paper presents a general approach to locate any type of fault on either a single-circuit or a double-circuit transmission line when only current magnitude measurements are available. Emphasis is given to double-circuit line. The distinctive feature of the proposed fault location method is the current measurements employed can be from one or more branches, which are not restricted to those of the faulted section. Evaluation studies based on EMTP simulation have shown quite accurate results.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133485424","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}
Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453885
Yashodhan Tarte, A. Amanna, Charles Okwudiafor
Wireless networks based on the IEEE 802.11 standard have become very prevalent recently. Most of these networks support only nomadic mobility of wireless devices. However, in case of vehicle-to-infrastructure communications the mobile devices in the vehicles need to have the ability to quickly switch their association to a new access point (AP) when they move out of range of their initial access point to ensure seamless connectivity. The handoff latency in vehicular environments can be improved if the mobile device has prior knowledge about the channels that access points in its vicinity are using. This paper describes a testbed for testing vehicle-to-infrastructure communications and gives experimental results showing improvement in handoff latency with prior knowledge of channels to scan.
{"title":"Experimental testbed for investigating IEEE 802.11 handoff in vehicular environment","authors":"Yashodhan Tarte, A. Amanna, Charles Okwudiafor","doi":"10.1109/SECON.2010.5453885","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453885","url":null,"abstract":"Wireless networks based on the IEEE 802.11 standard have become very prevalent recently. Most of these networks support only nomadic mobility of wireless devices. However, in case of vehicle-to-infrastructure communications the mobile devices in the vehicles need to have the ability to quickly switch their association to a new access point (AP) when they move out of range of their initial access point to ensure seamless connectivity. The handoff latency in vehicular environments can be improved if the mobile device has prior knowledge about the channels that access points in its vicinity are using. This paper describes a testbed for testing vehicle-to-infrastructure communications and gives experimental results showing improvement in handoff latency with prior knowledge of channels to scan.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722420","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}
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