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Energy harvesting technologies for wireless sensors in rotating environments
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0003-1763-8978
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0002-4133-3317
2014 (English)In: Proceedings of 2014 IEEE 19th International Conference on Emerging Technologies & Factory Automation (ETFA 2014): Barcelona, Spain, 16-19 Sept. 2014, Piscataway, NJ: IEEE Communications Society, 2014, article id 7005364Conference paper, Published paper (Refereed)
Abstract [en]

Using sensors to measure parameters of interest in rotating environments and communicating the measurements in real-time over wireless links, requires a reliable power source. In this paper, we have investigated the possibility to generate electric power locally by evaluating six different energy-harvesting technologies. The applicability of the technology is evaluated by several parameters that are important to the functionality in an industrial environment. All technologies are individually presented and evaluated, a concluding table is also summarizing the technologies strengths and weaknesses. To support the technology evaluation on a more theoretical level, simulations has been performed to strengthen our claims. Among the evaluated and simulated technologies, we found that the variable reluctancebased harvesting technology is the strongest candidate for further technology development for the considered use-case.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2014. article id 7005364
Series
IEEE Emerging Technology and Factory Automation (ETFA)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-30362DOI: 10.1109/ETFA.2014.7005364ISI: 000360999100315Scopus ID: 2-s2.0-84946686221Local ID: 423f5291-5a99-418b-b2d3-6479e11fdd6eISBN: 978-1-4799-4845-1 (print)OAI: oai:DiVA.org:ltu-30362DiVA, id: diva2:1003589
Conference
International Conference on Emerging Technologies & Factory Automation : 16/09/2014 - 19/09/2014
Projects
Arrowhead
Note

Validerad; 2015; Nivå 1; 20140904 (gusjon)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
In thesis
1. Robust energy management for IoT machine elements
Open this publication in new window or tab >>Robust energy management for IoT machine elements
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Advancements in semiconductor technology have reached the point where ambient energy surrounding their environment can power sensors and microprocessors. It enables new strategies for energy management which is necessary to continue the sensorization of our environment. With the vast amount of and the rate at which the number of interconnected devices is increasing, there is a need to power resource-constrained devices through other means than disposable batteries. Harvesting ambient energy from the vicinity of the device is one solution.

SKF, a producer of rolling element bearings, produces approximately one billion bearings per year. A mechanical part that is essential for rotating machinery and that has the potential to measure and monitor vital parts of the machine. A scenario in which bearings are embedded with electronics to monitor process and health parameters that can be analyzed on site and collected to remote locations is a crucial motivator for this thesis.

This thesis presents some of the most common sources of energy used for harvesting energy in rotating environments and discusses how different transduction methods can convert ambient energy into electrical energy. General solutions that robustly apply to many applications are of great interest. The investigated technologies should apply to a dirty and encapsulated industrial environment; therefore, certain energy sources, for example, sunlight and radio frequencies, are omitted. Vibration harvesters are investigated and modeled in SPICE to verify performance gains using a novel circuit for non-linear power extraction for piezoelectric materials. Simulations showed that a weak coupling from the electrical system to the mechanical system would greatly benefit non-linear extraction techniques. Such a weakly coupled system can be created in a bearing. Mechanical load and rotation generate cyclic strain in the bearings raceway; the cyclic strain can be utilized by applying piezoelectric patches to the raceway to power embedded systems and sensory information from the piezoelectric patch can also be used to monitor the bearing. Finally, trends and limits for computation, communication, data acquisition, and energy storage are investigated to evaluate the most robust energy storage solution for future embedded systems, which are powered by an energy harvester.

Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2018
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
Keywords
Energy harvesting, Rolling element bearing, Energy Storage
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-69575 (URN)978-91-7790-169-3 (ISBN)978-91-7790-170-9 (ISBN)
Public defence
2018-09-27, D770, University Campus, Porsön, Luleå, 10:00 (English)
Opponent
Supervisors
Available from: 2018-06-18 Created: 2018-06-15 Last updated: 2018-06-18Bibliographically approved

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