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20th IEEE International Symposium on Consumer Electronics, ISCE 2016

作者： Sestito, Guilherme Serpa Turcato, Afonso Celso Dias, Andre Luis Rocha, Murilo Silveira Brandão, Dennis Da Veiga Torres, Renato Industrial Automation Laboratory Electrical Engineering Department Engineering School of Sao Carlos University of Sao Paulo Sao Paulo Brazil Measurement and Sensor Technology Department Faculty of Electrical Engineering and Information Technology Chemnitz University of Technology Brazil

ISBN: (纸本)9781509015498

This study evaluates a large Profinet network using ring topology applied in an industry production line. The analysis is based on some performance indicators: jitter and throughput taking in consideration the update time of the devices, number of switches and cable length between IO-Devices and the IO-Controller. The network studied has a considerable amount of devices including distributed IOs, sensors and actuators. Its setup provides star and line topologies, besides a ring topology using manage switches. The results show the operation of MRP protocol and achieved values for the performance indicators in real factory automation applications. © 2016 IEEE.

关键词： Jitter

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Photoacoustic CO2-sensor for Automotive Applications

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Procedia engineering 2016年 168卷 3-6页

作者： J. Huber C. Weber A. Eberhardt J. Wöllenstein Fraunhofer Institute for Physical Measurement Techniques IPM Department of Gas and Process Technology Group of Integrated Sensor Systems 79110 Freiburg Germany Department of Microsystems Engineering - IMTEK University of Freiburg Germany

We present a field-tested miniaturized spectroscopic CO 2 sensor which is based on the photoacoustic effect. The sensor is developed for automotive applications and considers the requirements for the usage in vehicles. The sensor measures two measurement ranges simultaneously: The monitoring of the indoor air quality and the detection of possible leakages of the coolant in CO 2 air-conditioning systems. The sensor consists of a miniaturized innovative photoacoustic sensor unit with integrated electronics. The sensor was characterized in detail in laboratory and the capability for automotive applications was proven in field measurements in a test car. Furthermore the potential for market entry is discussed.

关键词： gas sensor photoacoustic carbon dioxide spectroscopy automotive

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Improvement in long term stability of the long range AFMs 21

Improvement in long term stability of the long range AFMs

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21st IMEKO World Congress on measurement in Research and Industry

作者： Vorbringer-Dorozhovets, Nataliya Manske, Eberhard Technische Universität Ilmenau Department of Mechanical Engineering Institute for Process Measurement and Sensor Technology PO Box 100 565 IlmenauD-98684 Germany

Long range AFMs suffer mainly from drift due to the relative long measurement times and from tip wear due to the large measured distances. After investigations of the long term stability of the AFMs, in this work, the... 详细信息

关键词： Precision engineering

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Fiber optic graphene sensors for dynamic pressure measurements

Fiber optic graphene sensors for dynamic pressure measuremen...

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Optical sensors, sensors 2015

作者： Liu, Haijun Olson, Douglas A. Douglass, Kevin O. Yu, Miao Sensor Science Division Physical Measurement Laboratory National Institute of Standards and Technology GaithersburgMD20899 United States Department of Mechanical Engineering University of Maryland College ParkMD20742 United States

ISBN: (纸本)9781557520005

关键词： Graphene

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Characterisation of the tool wear during ductile polishing of ceramic tiles using morphological space

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International Journal of Abrasive technology 2016年第3期7卷 216-225页

作者： Sousa, Fábio José Pinheiro Seewig, Jörg Do Nascimento, Rubens Maribondo Chiamulera, Cátia Alarcon, Orestes Estevam Weingärtner, Walter Lindwolf Department of Mechanical Engineering Institute for Manufacturing Technology and Production Systems - FBK University of Kaiserslautern P.O. Box 3049 KaiserslauternD-67653 Germany Department of Mechanical Engineering Institute for Measurement and Sensor-Technology - MTS University of Kaiserslautern P.O. Box 3049 KaiserslauternD-67653 Germany Department of Material Engineering Federal University of Rio Grande Do Norte Natal - RNCEP 59078-900 Brazil Embraer Av. Alcides Cagliari 2281 B-200 Botucatu - SP18606-855 Brazil Department of Mechanical Engineering Federal University of Santa Catarina P.O. Box 476 Florianópolis - SCCEP 88040-900 Brazil

The present work is focused on the wear of the abrasive tools during the industrial polishing process of porcelain stoneware tiles, aiming to extend the validity of using morphological space to quantify the wear when very fine abrasive tools are used. In such morphological space, the horizontal and vertical axes are respectively the skewness (Sk) and the kurtosis (K) of the distribution of heights taken from several surface profiles. Despite the existence of an intrinsic interaction between Sk and K, the approach enables the sequence of geometrical changes suffered by the fickert surface to be quantitatively evaluated. The experimental points obtained were nearly aligned and with a negative slope, just as expected for abrasive wear. Implausibly, the results for fine abrasive fickerts was much more scattered than for those with coarse abrasive particles found in literature. Copyright © 2016 Inderscience Enterprises Ltd.

关键词： Silicon carbide

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Miniaturized Photoacoustic Carbon Dioxide sensor with Integrated Temperature Compensation for Room Climate Monitoring

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Procedia engineering 2015年 120卷 283-288页

作者： J. Huber A. Ambs J. Wöllenstein Fraunhofer Institute for Physical Measurement Techniques IPM Department of Gas and Process Technology Group of Integrated Sensor Systems 79110 Freiburg Germany Department of Microsystems Engineering - IMTEK University of Freiburg Germany

A miniaturized photoacoustic spectroscopic gas sensor for room climate monitoring is presented with the measurement range of 0 –5000 ppm. The sensor consists of an innovative photoacoustic detection unit with an integrated mobile phone microphone as pressure sensor. As IR-source a broadband thermal emitter is used. The emitter is modulated with 13 Hz at a maximum temperature of about 750 °C. An electronic unit with a microcontroller on a 3D-PCB design has been developed. The sensor reaches a resolution better than 50 ppm CO 2 . A detailed characterization of the setup has been carried out. An integrated temperature compensation is realized to improve the sensor performance under varying environmental conditions. The potential for further miniaturization and the realization as a low-cost mass market sensor is shown.

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Comparative study of resonant circuit for power transmission via inductive link

Comparative study of resonant circuit for power transmission...

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IEEE SSD International Multi-Conference on Systems, Signals and Devices

作者： Ghada Bouattour Bilel Kallel Koushik Sasmal Olfa Kanoun Nabil Derbel Chair for Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany Department of Electrical Engineering University of Sfax Sfax Tunisia

Wireless power transmission via inductive links has been more and more developed in the last years for low power applications. In this paper we will explore a solution to obtain a maximum output power and relative high efficiency for a Single input single output SISO coil system and for a multi-input single output MISO coil system using compensation capacitors in both sending and receiving sides. These compensation capacitors form four topologies: Series-Series, Series-Parallel, Parallel-Series and Parallel-Parallel. For the same reason a rectifier stage providing a DC output voltage is used. Investigation shows the dominance of the parallel-parallel topology for a maximum power and efficiency while using both single input single output and multi input single output coil system in case of fixed axial distance and variable lateral misalignment.

关键词： Topology Capacitors Inductance Resistance Wireless power transmission Power generation

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Fabrication of patternable nanopillars for microfluidic SERS devices based on gap-induced uneven etching

Fabrication of patternable nanopillars for microfluidic SERS...

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IEEE International Conference on Micro Electro Mechanical Systems

作者： Y. Wang L. C. Tang H. Y. Mao C. Lei W. Ou J. J. Xiong Y. Ou A. J. Ming D. Li D. P. Chen Smart Sensor Engineering Center Jiangsu R&D Center for Internet of Things Wuxi P. R. China Key Laboratory of Microelectronics Devices & Integrated Technology Chinese Academy of Sciences Beijing P. R. China National Key Laboratory for Electronic Measurement Technology North University of China Taiyuan P. R. China Department of Electrical Engineering Stanford University California United States

In this work, a lithography-free approach for fabricating patternable nanopillars is reported. The key technique of the approach is to introduce a gap over the substrate by covering it with a cap, which contains through holes and the material on its lower surface has similar etching rate with the substrate. By this means, uneven etching of the substrate is induced under the through holes, consequently, nanopillars are fabricated into patterns corresponding to the holes. By sputtering a thin layer of Ag on the nanopillar patterns, obvious Raman enhancement can be observed. Since the large areas around the patterns are protected from anisotropic etching and metal sputtering, they are flat enough to be bonded with PDMS caps thus to form microfluidic Surface-enhanced Raman Scattering devices, and the whole fabrication process for the devices is simplified.

关键词： Substrates Etching Microfluidics Fabrication Silicon Nanoscale devices

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Wireless network acquisition of joint EEG-ECG-ergospirometric signals for epilepsy detection

Wireless network acquisition of joint EEG-ECG-ergospirometri...

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2013 2nd IEEE International Workshop on measurements and Networking, M and N 2013

作者： Lay-Ekuakille, A. Vergallo, P. Griffo, G. Kanoun, O. Angelillo, F. Trabacca, A. University of Salento Department of Innovation Engineering Lecce Italy Chemnitz University of Technology Department of Measurement and Sensor Technology Chemnitz Germany IRCCS E.Medea Associazione La Nostra Famiglia Brindisi Italy

ISBN: (纸本)9781467328739

Wireless network architecture allows the implementation of fatigue measurement that was once performed in a limited and constrained way due to the use of wired connections. This paper presents measurement acquisitions by means of wireless network that allows joint acquisition of electroencephalograms, electrocardiograms and ergospirometry signals. This opportunity permits to a person walking to a dedicated path (about 30 meters) to develop fatigue that is recorded in function of EEG and ECG. Only wireless configuration allows the patient under test to walk. Some issues have been developed to detect interesting features on transmitted signals for epilepsy detection. © 2013 IEEE.

关键词： Electrocardiograms

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Wireless network acquisition of joint EEG-ECG-ergospirometric signals for epilepsy detection

Wireless network acquisition of joint EEG-ECG-ergospirometri...

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IEEE International Workshop on measurements and Networking Proceedings (M&N)

作者： A. Lay-Ekuakille P. Vergallo G. Griffo O. Kanoun F. Angelillo A. Trabacca Universita del Salento Lecce Puglia IT Department of Innovation Engineering. University of Salento Lecce Italy Chemnitz university of Technology Chair of Measurement and Sensor Technology Chemnitz Germany IRCCS “E. Medea” Associazione La Nostra Famiglia Brindisi Italy

关键词： Wireless sensor networks Electroencephalography Wireless communication Monitoring Robot sensing systems Electrocardiography

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