{"title":"Real-time data collection in a spatially extended TDMA-based wireless sensor network","authors":"A. Berger, Albert Potsch, A. Springer","doi":"10.1109/WISNET.2012.6172146","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172146","url":null,"abstract":"A major task of wireless sensor networks (WSNs) is to collect data under a range of ambient conditions and with many different dynamics from a variety of sensors which are distributed, for instance, around an industrial plant. Focusing on real-time data collection for control applications, we present a spatial extension to our previously published self-organized TDMA-based WSN with star topology implemented on low-complexity commercial off-the-shelf hardware. Employing repeater nodes for two-hop neighbors retains both the real-time behavior and self-organization of the initial protocol. Under ideal conditions, the radius of the area covered by the WSN can be doubled while the increase in power consumption due to the repeater nodes remains moderate.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115491885","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}
{"title":"Magnetic resonant wireless power delivery for distributed sensor and wireless systems","authors":"Brian J. Lee, A. Hillenius, D. Ricketts","doi":"10.1109/WISNET.2012.6172148","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172148","url":null,"abstract":"In this paper we report on a resonant wireless power delivery system using magnetoquasistatic fields. The system consists of a source coil impedance matched to a function generator using a resonant circuit and one or more repeater, or relay, resonant tanks that couple energy from source coil to loads distributed in the system. We experimentally map the power distribution for one and multiple loads as a function of distance from the source and repeater. We then use this information to construct a resonant wireless power delivery system using a distributed set of 4 repeaters and 6 loads, delivering 15 mW total over a distance of 6.4 ft. We also demonstrate that the distributed system is not strongly perturbed by weakly conducting obstructions, such as the human body, enabling non-line-of-sight wireless power of sensor and wireless networks.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114739835","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}
Alexander Koelpin, S. Lindner, G. Vinci, B. Laemmle, R. Weigel
{"title":"The enhanced six-port architecture: A measurement based proof of concept","authors":"Alexander Koelpin, S. Lindner, G. Vinci, B. Laemmle, R. Weigel","doi":"10.1109/WISNET.2012.6172143","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172143","url":null,"abstract":"In this publication the concept of the enhanced six-port receiver is proven by measurements of a hardware demonstrator. The enhanced six-port architecture has been proposed for simultaneous data reception and angle of arrival estimation with only one receiver front-end. It offers high positioning accuracy and high bandwidth combined with low circuit complexity. Up to now the concept has only been introduced and validated by system simulations. In this publication measurements of a hardware setup will be presented for the first time proving the functionality and performance of this new and promising architecture.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131540453","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}
F. Giuppi, A. Georgiadis, S. Via, A. Collado, R. Vyas, M. Tentzeris, M. Bozzi
{"title":"A 927 MHz solar powered active antenna oscillator beacon signal generator","authors":"F. Giuppi, A. Georgiadis, S. Via, A. Collado, R. Vyas, M. Tentzeris, M. Bozzi","doi":"10.1109/WISNET.2012.6172144","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172144","url":null,"abstract":"This work presents the design and implementation of a 927 MHz radio frequency beacon in coplanar waveguide technology, which scavenges through solar energy the power necessary for operation. Starting from a folded-slot antenna topology, a reflection-type oscillator is designed by combining full-wave and nonlinear analyses. Properly placed solar cells and a regulator are used to bias the device by scavenging solar energy from the environment. Prototypes have been implemented and measured. This low cost implementation could be useful in low-power wireless applications.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123723176","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}
Alexander Goetz, R. Rose, S. Zorn, G. Fischer, R. Weigel
{"title":"Performance of coherent time delay estimation techniques for frequency hopping GSM signals","authors":"Alexander Goetz, R. Rose, S. Zorn, G. Fischer, R. Weigel","doi":"10.1109/WISNET.2012.6172142","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172142","url":null,"abstract":"In this paper, the performance of coherent time delay estimation techniques for frequency hopping GSM signals is investigated. It is demonstrated that the techniques enable the usage of a substantially higher bandwidth for time delay estimation and localization purposes compared to state-of-the-art techniques. Since resolution and noise performance directly depend on the applied bandwidth of the signals, major improvements can be realized. For E-GSM 900 systems, an overall bandwidth of up to 35 MHz may be used which enables time delay estimation and localization in the scale of a few meters. The coherent time delay estimation techniques are therefore ideally suited for search and rescue applications.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116143667","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}
{"title":"Scalable network joining mechanism in wireless sensor networks","authors":"Hyung-Sin Kim, Jin-Seok Han, Yong-Hwan Lee","doi":"10.1109/WISNET.2012.6172139","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172139","url":null,"abstract":"It is of great concern to employ an efficient network joining mechanism to construct a large scale wireless sensor network (WSN). For example, ZigBee can construct a cluster-tree based WSN with the use of a simple network joining, addressing and routing mechanism. However, when applied to a large scale WSN, it may not provide desirable node connectivity mainly due to the waste of network depth and networking bias. In this paper, we consider the design of network joining algorithms that can construct a large scale cluster-tree structured WSN with maximal node connectivity. A new node willing to join as a router selects its parent node among neighbor routers which are closer to the network coordinator than itself, reducing the waste of network depth. The parent node selects isolated nodes first as its child routers, alleviating the networking bias problem. Finally, the performance of the proposed networking mechanism is verified by computer simulation, showing remarkable performance improvement over conventional ZigBee in a large scale WSN1.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127217289","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}
Martin Scherhaufl, R. Pfeil, M. Pichler, A. Berger
{"title":"A novel ultrasonic indoor localization system with simultaneous estimation of position and velocity","authors":"Martin Scherhaufl, R. Pfeil, M. Pichler, A. Berger","doi":"10.1109/WISNET.2012.6172145","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172145","url":null,"abstract":"We present a novel ultrasonic (US) indoor localization system based on the time-of-arrival (TOA) principle realized with radio frequency (RF) synchronization. The US signal is assembled as a Gold sequence of chirp signals to guarantee a high signal-to-noise ratio (SNR) and, at the same time, provide the position estimates of multiple mobile transmitters (MTs). By exploiting the TOA in the time domain and the Doppler shift in the frequency domain, position and velocity of the MT can be determined simultaneously. The concept is proven by means of both simulated and measured data and performs excellently even in a harsh industrial environment.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125567488","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}
{"title":"A wireless smart sensor network based on multi-function interferometric radar sensors for structural health monitoring","authors":"Changzhan Gu, J. Rice, Changzhi Li","doi":"10.1109/WISNET.2012.6172140","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172140","url":null,"abstract":"Structural health monitoring calls for sensors that are low-cost, low-profile, and power-constraint. It also requires the sensors to form a network to accurately monitor the low-frequency response that often occurs in many civil structures such as long-span bridges. However, the existing sensors are either not practical for wireless implementation, does not have enough accuracy, or are not cost-effective. This paper presents a multi-function interferometric radar sensor that can easily form a smart sensor network by the merit of the ZigBee mesh networking function integrated in the sensor. The radar sensor, integrated with a micro-controller, works in the arctangent-demodulated interferometric mode to monitor the structure's displacement with an accuracy of sub-millimeter. Experimental results show that the smart sensor network using the multi-function radar sensors serves as a good alternative for monitoring structural health.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131684630","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}
R. Stefanelli, Mario Demaria, Mauro Marroncelli, D. Trinchero
{"title":"Magnetic front-end with complex geometry for application of wireless sensor networks in water and liquids","authors":"R. Stefanelli, Mario Demaria, Mauro Marroncelli, D. Trinchero","doi":"10.1109/WISNET.2012.6172147","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172147","url":null,"abstract":"The paper introduces an efficient procedure that allows the design of low cost magnetic antennas with arbitrary shape and extremely reduced dimensions. The technique does not need any optimization procedure and it can be applied to any antenna geometry, even very complex ones, e.g., with fractal shape. Simulations have been compared to measurements, proving a good agreement and an excellent performance in terms of radiation efficiency, not only in free space, but also when the antenna is collocated inside dissipative media. For this reason, the device can be efficiently proposed for the realization of the terminal unit in wireless sensor networks, especially when the node must be embedded inside lossy material.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129242075","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}
G. Ponchak, M. Scardelletti, Brandt Taylor, Steve Beard, R. Meredith, G. Beheim, G. Hunter, W. Kiefer
{"title":"High temperature, wireless seismometer sensor for Venus","authors":"G. Ponchak, M. Scardelletti, Brandt Taylor, Steve Beard, R. Meredith, G. Beheim, G. Hunter, W. Kiefer","doi":"10.1109/WISNET.2012.6172141","DOIUrl":"https://doi.org/10.1109/WISNET.2012.6172141","url":null,"abstract":"Space agency mission plans state the need to measure the seismic activity on Venus. Because of the high temperature on Venus (462°C average surface temperature) and the difficulty in placing and wiring multiple sensors using robots, a high temperature, wireless sensor using a wide bandgap semiconductor is an attractive option. This paper presents the description and proof of concept measurements of a high temperature, wireless seismometer sensor for Venus. A variation in inductance of a coil caused by the movement of an aluminum probe held in the coil and attached to a balanced leaf-spring seismometer causes a variation of 700 Hz in the transmitted signal from the oscillator/sensor system at 426°C. This result indicates that the concept may be used on Venus.","PeriodicalId":410839,"journal":{"name":"2012 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116965951","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}