Pub Date : 2015-05-01DOI: 10.1109/SUSTECH.2015.7314338
A. Simmons, T. Brekken, P. Lomónaco, C. Michelen
Simulation tools are designed to represent subsets of the real world. To be effective, these tools must be experimentally validated with real world measurements. Sandia National Laboratories (SNL) and the National Renewable Energy Laboratory (NREL) have been tasked by the U.S. Department of Energy (USDOE) with the creation of a time-domain equation-of-motion simulator for the evaluation of wave energy converters, called WEC-Sim. A project for the experimental validation of WEC-Sim features has resulted in the development of custom instrumentation designed to characterize the forces affecting the power take-off (PTO) of the model wave energy converter (WEC). This paper describes the development of this instrument, a dynamometer, including the original project requirements, model specification, component choice, and capabilities. The inclusion of the dynamometer in the experimental model has a disruptive influence on the hydrodynamic operation. Prior to the laboratory experiments, the instrument is simulated using WEC-Sim output as a driving force to verify the dynamometer design in a virtual environment. The results of these simulations are reported here, demonstrating the process used to validate the design prior to physical implementation.
{"title":"Creating a dynamometer for experimental validation of power take-off forces on a wave energy converter","authors":"A. Simmons, T. Brekken, P. Lomónaco, C. Michelen","doi":"10.1109/SUSTECH.2015.7314338","DOIUrl":"https://doi.org/10.1109/SUSTECH.2015.7314338","url":null,"abstract":"Simulation tools are designed to represent subsets of the real world. To be effective, these tools must be experimentally validated with real world measurements. Sandia National Laboratories (SNL) and the National Renewable Energy Laboratory (NREL) have been tasked by the U.S. Department of Energy (USDOE) with the creation of a time-domain equation-of-motion simulator for the evaluation of wave energy converters, called WEC-Sim. A project for the experimental validation of WEC-Sim features has resulted in the development of custom instrumentation designed to characterize the forces affecting the power take-off (PTO) of the model wave energy converter (WEC). This paper describes the development of this instrument, a dynamometer, including the original project requirements, model specification, component choice, and capabilities. The inclusion of the dynamometer in the experimental model has a disruptive influence on the hydrodynamic operation. Prior to the laboratory experiments, the instrument is simulated using WEC-Sim output as a driving force to verify the dynamometer design in a virtual environment. The results of these simulations are reported here, demonstrating the process used to validate the design prior to physical implementation.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115729527","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 : 1900-01-01DOI: 10.1109/CCWC.2017.7868395
Hengameh Bahrami, K. Hajsadeghi
Security in mobile handsets of telecommunication standards such as GSM, Project 25 and TETRA is very important, especially when governments and military forces use handsets and telecommunication devices. Although telecommunication could be quite secure by using encryption, coding, tunneling and exclusive channel, attackers create new ways to bypass them without the knowledge of the legitimate user. In this paper we introduce a new, simple and economical circuit to warn the user in cases where the message is not encrypted because of manipulation by attackers or accidental damage. This circuit not only consumes very low power but also is created to sustain telecommunication devices in aspect of security and using friendly. Warning to user causes the best practices of telecommunication devices without wasting time and energy for fault detection.
{"title":"Circuit design to improve security of telecommunication devices","authors":"Hengameh Bahrami, K. Hajsadeghi","doi":"10.1109/CCWC.2017.7868395","DOIUrl":"https://doi.org/10.1109/CCWC.2017.7868395","url":null,"abstract":"Security in mobile handsets of telecommunication standards such as GSM, Project 25 and TETRA is very important, especially when governments and military forces use handsets and telecommunication devices. Although telecommunication could be quite secure by using encryption, coding, tunneling and exclusive channel, attackers create new ways to bypass them without the knowledge of the legitimate user. In this paper we introduce a new, simple and economical circuit to warn the user in cases where the message is not encrypted because of manipulation by attackers or accidental damage. This circuit not only consumes very low power but also is created to sustain telecommunication devices in aspect of security and using friendly. Warning to user causes the best practices of telecommunication devices without wasting time and energy for fault detection.","PeriodicalId":147093,"journal":{"name":"2015 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122368222","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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