Efficient online Compression of BCG Data

• Typ der Arbeit: Forschungsprojekt
• Status der Arbeit: abgeschlossen
• Projekte: Wireless Compose 2
• Betreuer: Ulf Kulau

BCG data is ultimately acceleration data from a sensor worn on the body. A sampling rate of 1KHz is required to ensure the signal quality necessary for subsequent evaluation. In order to transfer the data efficiently (e.g. for wireless data transmission), an online compression block for the BCG data will be developed and evaluated for an FPGA. The particular challenge lies in the fact that the FPGAs used are resource-constrained systems. The goal is to develop a compression block that is as efficient as possible, but also as reliable as possible.

Tasks

• Derivation and development of a compression method suitable for BCG.
• Investigation and evaluation of derived solutions (e.g. as dry run in SW)
• Implementation and evaluation of compression block of ICE40 FPGA

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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• WiSEE Conference
  Wireless Compose-2: A wireless communication network with a Ballistocardiography Smart-Shirt experiment in the ISS Columbus module

  Martin Drobczyk, Andre Lübken, Christian Strowik, Ulf Kulau, Jochen Rust, Jan Beringer, Urs-Vito Albrecht2021 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)2021.
  10.1109/WiSEE50203.2021.9613824 [BibTex]

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  BibTex Entry

  @inproceedings{Kulau:wisee2021,
  author = {Drobczyk, Martin and L{ü}bken, Andre and Strowik, Christian and Kulau, Ulf and Rust, Jochen and Beringer, Jan and Albrecht, Urs-Vito},
  booktitle = {2021 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)},
  doi = {10.1109/WiSEE50203.2021.9613824},
  entrysubtype = {Conference},
  organization = {IEEE},
  pages = {103-108},
  title = {{Wireless Compose-2: A wireless communication network with a Ballistocardiography Smart-Shirt experiment in the ISS Columbus module}},
  year = {2021},
  }

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