Power Supply and Wireless Charging of miniaturized Sensor System

• Typ der Arbeit: Masterarbeit
• Status der Arbeit: reserviert
• Betreuer: Ulf Kulau

In the field of SCG sensor technology, a highly miniaturized system is currently being developed that can also be worn on the body of very small animals. It is important to mention that of course no tests are carried out on animals, this is pure development work to demonstrate the feasibility of a sensor in miniature format.

For such a sensor system, one of the most important components is the power supply and at the same time the most challenging component. The energy density of energy storage devices is lousy and batteries are often the largest element of a sensor system.

But especially for the sensor targeted here, size, weight and unobtrusiveness are immensely important. Therefore, a local but small energy storage device should be used to power the sensor system. By means of wireless charging, which we have come to expect from cell phones, the small energy storage unit should be able to be recharged at intervals. The system is to be implemented in a highly integrated way on a flex PCB, i.e. the coil for the energy transfer must also be designed in the PCB.

The requirement that hovers over everything is that it must be really small.

Tasks

• Familiarization with the topic, literature research and development of an initial concept
• Development and implementation of a prototype including PCB development and construction of the entire measurement setup
• Implementation of intensive evaluations and analysis of all results
• Demonstration of feasibility and derivation of models to describe discharge and charge cycles, efficiency, etc.
• Detailed written elaboration and documentation

Further Reading

• Journal
  A Precise, Parallel and Scalable Measurement System for Ballistocardiographic Research

  Thiemo Clausen, Tobias Jura, Nico Jähne-Raden, Marie Cathrine Wolf, Lars Wolf, Ulf KulauSmart Health192021.
  https://doi.org/10.1016/j.smhl.2020.100169 [BibTex]

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  BibTex Entry

  @article{kulau_BCG:2020,
  abstract = {Ballistocardiography (BCG) is the measurement of heart and cardiovascular related acceleration of the body. Due to the availability of inexpensive and small accelerometers, scientific interest in BCG increased in recent years. A variety of different measurement systems have emerged. Many of them lack on data quality, such as resolution and temporal precision. A deterministic timing behaviour is essential to produce meaningful results, especially when dealing with data from multiple sensors at once. We present a novel measurement system, which allows for parallel digital data acquisition in the presence of strict deterministic timing constraints. A dedicated server manages multiple measurement boards and acts as a data sink. All connected boards are synchronized, which renders all acquired data comparable in time. On each board, data from 4 parallel channels is pre-processed and time-stamped in Field Programmable Gate Array logic. The presented system enables distributed measurements and is scalable within the limitations of the available network. A field test with over 30 subjects proved the usability and reliability of the system, while all data are made available for the community and first results of this campaign are presented within this paper.},
  author = {Thiemo Clausen and Tobias Jura and Nico Jähne-Raden and Marie Cathrine Wolf and Lars Wolf and Ulf Kulau},
  doi = {https://doi.org/10.1016/j.smhl.2020.100169},
  entrysubtype = {Journal},
  issn = {2352-6483},
  journaltitle = {Smart Health},
  keywords = {Ballistocardiography, Measurement system, Data acquisition, Field test},
  pages = {100169},
  title = {{A Precise, Parallel and Scalable Measurement System for Ballistocardiographic Research}},
  url = {https://www.sciencedirect.com/science/article/pii/S2352648320300611},
  volume = {19},
  year = {2021},
  }

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• Wireless energy harvesting for the Internet of Things

  Pouya Kamalinejad, Chinmaya Mahapatra, Zhengguo Sheng, Shahriar Mirabbasi, Victor CM Leung, Yong Liang GuanIEEE Communications Magazine53.6IEEE2015.
  [BibTex]

  🗙

  BibTex Entry

  @article{kamalinejad2015wireless,
  author = {Kamalinejad, Pouya and Mahapatra, Chinmaya and Sheng, Zhengguo and Mirabbasi, Shahriar and Leung, Victor CM and Guan, Yong Liang},
  journaltitle = {IEEE Communications Magazine},
  number = {6},
  pages = {102–108},
  publisher = {IEEE},
  title = {Wireless energy harvesting for the Internet of Things},
  volume = {53},
  year = {2015},
  }

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• Rodent Research in Space: A Decadal Research Campaign

  Joshua Alwood, Lane K Christenson, Yasaman Shirazi, Jeffrey Alberts, Charles Fuller, Louis Stodieck, Rajeev Desai, Jon Steller, Eduardo Almeida, April RoncaDecadal Survey on Biological and Physical Sciences Research in Space 2023-2032National Academies of Science2021.
  [BibTex]

  🗙

  BibTex Entry

  @article{alwood2021rodent,
  author = {Alwood, Joshua and Christenson, Lane K and Shirazi, Yasaman and Alberts, Jeffrey and Fuller, Charles and Stodieck, Louis and Desai, Rajeev and Steller, Jon and Almeida, Eduardo and Ronca, April},
  journaltitle = {Decadal Survey on Biological and Physical Sciences Research in Space 2023-2032},
  publisher = {National Academies of Science},
  title = {Rodent Research in Space: A Decadal Research Campaign},
  year = {2021},
  }

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