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2008 IEEE Sensors Applications Symposium最新文献

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Imaging algorithms for locating damage via in situ ultrasonic sensors 利用原位超声传感器定位损伤的成像算法
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472945
J. Michaels, A. Croxford, P. Wilcox
{"title":"Imaging algorithms for locating damage via in situ ultrasonic sensors","authors":"J. Michaels, A. Croxford, P. Wilcox","doi":"10.1109/SAS13374.2008.4472945","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472945","url":null,"abstract":"Permanently mounted ultrasonic sensors arranged as a spatially distributed array are being considered for in situ monitoring of the integrity of structural components. Here we consider two imaging algorithms for locating damage based upon changes in received signals. All transducer pairs in the array are considered, with each transducer acting in turn as a transmitter and the remaining transducers as receivers. The first imaging algorithm is based upon spatially distributing the differenced signals between each transducer pair as per expected arrival times for discrete scatterers. The resulting images, which consist of concentric ellipses, are summed over all pairs to form the final image. The second algorithm is based upon the cross correlation between waveforms originating from the same transmitter and received by two different transducers. The cross correlation waveforms, which capture the time difference of arrival between two pairs, are similarly distributed and summed to form the final image via a hyperbolic rather than an elliptical relationship. Results are shown for artificial damage in an aluminum plate.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121117774","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: 87
An extensible model for the deployment of non-isotropic sensors 非各向同性传感器部署的可扩展模型
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472936
B. Carter, R. Ragade
{"title":"An extensible model for the deployment of non-isotropic sensors","authors":"B. Carter, R. Ragade","doi":"10.1109/SAS13374.2008.4472936","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472936","url":null,"abstract":"Existing approaches for determining the optimal deployment positions of sensors suffer from a number of critical drawbacks. First, homogeneous deployment models have been commonly assumed, but in practice deployments of heterogenous sensors are typical. Second, existing approaches assume isotropic sensing ranges but it has been found that hardware and environmental conditions cause imperfections in sensing. Third, existing models are very application-dependent. We propose an extensible modeling framework for the problem of determining optimal deployment positions for a set of heterogeneous, non- isotropic sensors to cover a set of points in an area. The problem is formulated using a genetic algorithm where the objective is to minimize the cost to cover all points. Our technique is to decouple the coverage determination method from the sensor deployment model. This allows the sensor deployment model to remain consistent and address the critical drawbacks of previous models. A homeland security application is presented to illustrate the capabilities of our approach.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"13 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116877761","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: 17
Energy efficient routing technique for Ad-hoc sensor networks [EERT] 面向Ad-hoc传感器网络的节能路由技术
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472976
N. Uppu, B. Subrahmanyam, R. Garimella
{"title":"Energy efficient routing technique for Ad-hoc sensor networks [EERT]","authors":"N. Uppu, B. Subrahmanyam, R. Garimella","doi":"10.1109/SAS13374.2008.4472976","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472976","url":null,"abstract":"The main objective of this paper is to achieve prolonged network lifetime with Overall energy efficiency in Ad-hoc sensor networks through controlled utilization of limited energy. In wireless sensor networks, most of the energy spent is consumed in routing the sensed data from cluster head to the base station. To optimize the clustering & routing techniques, we introduce 1.Backup heads (to avoid frequent re-clustering) in each cluster, 2.Secondary membership heads (to eliminate multiple/redundant transmissions,) 3 Optimum distance hopping (to achieve overall energy efficiency of the network.) A modification to existing clustering technique [4], in combination with our energy efficient routing technique (using secondary memberships), results in considerable increase in the overall Network lifetime. Use of secondary memberships (to route the data through shortest path) conserves more energy than that of the extra energy spent for using backup heads in clustering. This results in an Overall Energy Efficiency with prolonged network lifetime.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"23 17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117155241","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: 4
A microwave frequency sensor for non-invasive blood-glucose measurement 一种用于无创血糖测量的微波频率传感器
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS.2008.4472932
B. R. Jean, E. C. Green, M. J. McClung
{"title":"A microwave frequency sensor for non-invasive blood-glucose measurement","authors":"B. R. Jean, E. C. Green, M. J. McClung","doi":"10.1109/SAS.2008.4472932","DOIUrl":"https://doi.org/10.1109/SAS.2008.4472932","url":null,"abstract":"A microwave sensor having features useful for the noninvasive determination of blood glucose levels is described. The sensor output is an amplitude only measurement of the standing wave versus frequency sampled at a fixed point on an open-terminated spiral-shaped microstrip line. Test subjects press their thumb against the line and apply contact pressure sufficient to fall within a narrow pressure range. Data are reported for test subjects whose blood glucose is independently measured using a commercial glucometer.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127328350","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: 123
Analysis of a right-hand circular polarized conventional antenna system for high altitude airborne cellular base stations 高空机载蜂窝基站右手圆极化常规天线系统分析
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472967
S. Denton, P. Zavidniak
{"title":"Analysis of a right-hand circular polarized conventional antenna system for high altitude airborne cellular base stations","authors":"S. Denton, P. Zavidniak","doi":"10.1109/SAS13374.2008.4472967","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472967","url":null,"abstract":"The WB-57 high altitude research aircraft, designed to serve as a relay and control platform for military communications, employed a right-hand circular polarized (RHCP) conventional antenna system coupled with a code division multiple access (CDMA) base station aimed at increasing the coverage area of mobile ground users in remote locations. Obtaining continual mobile communications coverage over two or more incongruent regions from an airborne platform can be challenging due to the resulting signal spatial structure and signal gain observed from the mobile ground users. This paper will evaluate the measured results; to include the antenna pattern and link budget of the WB-57 aircraft utilizing a RHCP conventional antenna system connected to a CDMA base station deployed above 50,000 feet flying in a defined orbital pattern, and will discuss the optimal approach to obtaining continual mobile communication coverage while airborne using a smart antenna system.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123557246","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
Physical modelling of a MEMS based electron tunneling accelerometer 基于MEMS的电子隧道加速度计的物理建模
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472952
T. K. Bhattacharyya, A. Ghosh, D. Paul
{"title":"Physical modelling of a MEMS based electron tunneling accelerometer","authors":"T. K. Bhattacharyya, A. Ghosh, D. Paul","doi":"10.1109/SAS13374.2008.4472952","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472952","url":null,"abstract":"The paper presents a comprehensive physical model of a high precision tunneling accelerometer. It also elaborates the design and optimization of realizing the accelerometer structure in order to achieve targeted specs. Fabrication steps of the accelerometer are CMOS compatible. Moreover the actuation voltage is kept within CMOS bias levels. Electron tunneling based current sensing has been modeled using a quantum mechanical approach. The proposed structure uniquely combines the electron tunneling based sensing and capacitive actuation. A feedback controller is designed to measure the acceleration under constant gap mode of operation. The full dynamic range of operation is 1 mug to 200 mug with mug resolution. The cross- axis sensitivity is less than 1% and the shock survivability is 10 g for a 10 ms shock with 0.1 ms rise time. The Brownian noise floor of the system has also been studied and the squeeze film damping effects on the system has been analyzed. The fabrication steps to realize the accelerometer has been shown.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134539640","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: 3
Design and performance of an impedance analyzer for nondestructive moisture content determination of in-shell peanuts 无损测定花生壳内水分的阻抗分析仪的设计与性能
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472941
C. Kandala, C. Butts
{"title":"Design and performance of an impedance analyzer for nondestructive moisture content determination of in-shell peanuts","authors":"C. Kandala, C. Butts","doi":"10.1109/SAS13374.2008.4472941","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472941","url":null,"abstract":"Moisture content (MC) in peanuts is measured at various stages of their processing and storage in the peanut industry. A method was developed earlier that would estimate the MC of a small sample of in-shell peanuts (peanut pods) held between two circular parallel-plates, from the values of capacitance and phase angle measured by a commercially available impedance analyzer, at three frequencies 1, 5 and 9 MHz. These values were used in an empirical equation, developed using the capacitance and phase angle values of samples of known MC levels, to obtain the average MC values of peanut samples with moisture contents in the range of 6 to 20% In the present work, a low-cost impedance analyzer, designed and assembled in our laboratory was used to measure the impedance and phase angles at 1, 5 and 9 MHz. The MC values predicted by the analyzer were compared with those obtained by the standard air-oven method. For 93% of the samples tested in the moisture range between 9% and 20% the MC values were found to be within 1% of the air-oven values. Ability to determine the average MC of in-shell peanuts without shelling and cleaning them, with a low-cost instrument, will be of considerable use in the peanut industry.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114098597","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
Wireless intelligent sensors supporting integrated systems health management architecture 支持集成系统健康管理架构的无线智能传感器
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472973
R. Wang, J. Morris, F. Figueroa, M. Morris
{"title":"Wireless intelligent sensors supporting integrated systems health management architecture","authors":"R. Wang, J. Morris, F. Figueroa, M. Morris","doi":"10.1109/SAS13374.2008.4472973","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472973","url":null,"abstract":"We demonstrated an actual Implementation of smart sensor technology based on IEEE 1451.1 and 1451.4 standards. The device is embedded with a MCU, FLASH memory, SRAM, eight analog-to-digital channels, and a 2.4 GHz wireless module. The implementation successfully demonstrated the sensor's plug- and-play capability through the use of a transducer electronic data sheet (TEDS). First, the TEDS is resided in the embedded FLASH memory within the intelligent sensor transceiver. Second, a Virtual TEDS is located in an intelligent processor to extend the benefits of the standardized TEDS to legacy sensors and applications where the embedded memory is not available. A HTML-based TEDS editor, which is located in the intelligent processor, allows users to create a new TEDS or modify an existing one remotely over TCP/IP network. The edited TEDS can be downloaded from the intelligent processor to the intelligent sensor wirelessly. The virtual TEDS could also be downloadable from Internet-connected TEDS servers to the intelligent processor if it is required. TEDS associated sensor measurement is either transmitted to a station that uses the sensor directly over the intelligent processor or stored in the server located in the intelligent processor for other applications. The wireless intelligent sensor will be used as an element of an ISHM implementation at NASA Stennis Space Center, as it will communicate with a station that includes an ISHM model of a system developed using the software environment G2.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116488179","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
Security issues and quality of service in real time wireless PLC/SCADA process control systems 实时无线PLC/SCADA过程控制系统的安全问题和服务质量
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472963
H. Eren, D. Hatipoğlu
{"title":"Security issues and quality of service in real time wireless PLC/SCADA process control systems","authors":"H. Eren, D. Hatipoğlu","doi":"10.1109/SAS13374.2008.4472963","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472963","url":null,"abstract":"A wireless PLC/SCADA network has been set up to investigate the reliability of wireless communication systems in a local area network. It has been shown that the integrity of data flow can be maintained within certain limits of the signal strength in a coverage area of an Access Point. The Wi-Fi can successfully be applied in industrial operations provided a careful site surveys has been be conducted and the boundaries are determined to ensure adequate signal strength to avoid any possible dropouts however short lived they may be. It has also been shown that if the dropout occurs the self repair capability of the communication system may not be sufficient thus requiring manual interference that may not be tolerable in many process control operations.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124151302","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
Routing algorithm for network of homogeneous and id-less biomedical sensor nodes (RAIN) 同质无id生物医学传感器节点网络(RAIN)路由算法
2008 IEEE Sensors Applications Symposium Pub Date : 2008-03-21 DOI: 10.1109/SAS13374.2008.4472946
A. Bag, M. Bassiouni
{"title":"Routing algorithm for network of homogeneous and id-less biomedical sensor nodes (RAIN)","authors":"A. Bag, M. Bassiouni","doi":"10.1109/SAS13374.2008.4472946","DOIUrl":"https://doi.org/10.1109/SAS13374.2008.4472946","url":null,"abstract":"Rapid development in microelectronics and MEMS technology in recent years, have led to a wide-scale application of sensor networks. Since the tiny wireless nodes will be deployed in thousands in near future, it will not be possible to provide each of them with unique hardware identifiers. Existing routing algorithms for sensor networks, which assume that all the nodes in the network can be uniquely identified, will not be suitable for being used in such networks of id-less sensors. In this paper we consider a biomedical application of such id-less sensor nodes and propose a routing algorithm (RAIN), that can be used in an in-vivo network of homogeneous and id-less biomedical sensor nodes. Simulation results show that RAIN performs much better than C-FLOOD, a controlled flooding algorithm in terms of reducing the average temperature rise and average energy consumption of the nodes.","PeriodicalId":225041,"journal":{"name":"2008 IEEE Sensors Applications Symposium","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124195215","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: 44
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