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The smart car seat: personalized monitoring of vital signs in automotive applications

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Abstract

Embedded wireless sensors are important components of mobile distributed computing networks, and one of the target applications areas is health care. The preservation of mobility for senior citizens is one of the key issues in maintaining an independent lifestyle. Thus health technologies inside a car can contribute both to safety issues (supervision of driver fitness) as well as healthcare issues by monitoring vitals signs imperceptibly. In this paper, three embedded measurement techniques for non-contact monitoring of vital signals have been investigated. Specifically, capacitive electrocardiogram (cECG) monitoring, mechanical movement analysis (ballistocardiogram, BCG) using piezo-foils and inductive impedance monitoring were examined regarding their potential for integration into car seats. All three sensing techniques omit the need for electroconductive contact to the human body, but require defined mechanical boundary conditions (stable distances or, in the case of BCG, frictional connection). The physical principles of operation, the specific boundary conditions regarding automotive integration and the results during wireless operation in a running car are presented. All three sensors were equipped with local intelligence by incorporating a microcontroller. To eliminate the need for additional cabling, a wireless Bluetooth communication module was added and used to transmit data to a measurement PC. Finally, preliminary results obtained during test drives on German city roads and highways are discussed.

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References

  1. Yang G-Z (eds) (2006) Body sensor networks. Springer, London

    Google Scholar 

  2. Pantelopoulos A, Bourbakis NG (2010) A survey on wearable sensor-based systems for health monitoring and prognosis. IEEE Tran Syst Man Cybern C Appl Rev 40(1):1–12

    Article  Google Scholar 

  3. Geisheimer J (1999) RVSM [radar vital signs monitor]. IEEE Poten 17(5):21–24, Dec. 1998/Jan

    Google Scholar 

  4. Ichapurapu R, Jain S, John G, Monday T, Lie DYC, Banister R, Griswold J (2009) A 2.4 GHz non-contact biosensor system for continuous vital-signs monitoring.10th Annual IEEE wireless and microwave technology conference (WAMICON ’09), 20–21 April

  5. Li C, Yu X, Li D, Ran L, Lin J (2009) Software configurable 5.8 GHz radar sensor receiver chip in 0.13 μm CMOS for non-contact vital sign detection. IEEE radio frequency integrated circuits symposium (IEEE RFIC 2009), Boston, Massachusetts, USA, 7–9 June

  6. Voisin A, Bombardier S, Levrat E, Bremont J (1998) Sensory features measurement of the under-thigh length of car seat. IEEE world congress on computational intelligence, Anchorage, Alaska, USA, 4–9 May

  7. Tumpold D, Satz A (2009) Contactless seat occupation detection system based on electric field sensing. 35th Annual conference of IEEE industrial electronics (IECON ’09), Porto, Portugal, 3–5 Nov

  8. Leonhardt S, Aleksandrowicz A (2008) Non-contact ECG monitoring for automotive application. 5th International workshop on wearable and implantable body sensor networks (BSN 2008), The Chinese University of Hong Kong, HKSAR, China, 1–3 June

  9. Schumm J, Setz C, Bächlin M, Bächler M, Arnrich B, Tröster G (2010) Unobtrusive physiological monitoring in an airplane seat. Personal and ubiquitous computing. doi:10.1007/s00779-009-0272-1, Online FirstTM

  10. Richardson PC (1967) The insulated electrode. 20th Annual conference on engineering in medicine and biology, Boston, MA, USA

  11. David RM, Portnoy WM (1972) Insulated electrocardiogram electrodes. Med Biol Eng Comput 10:742–751

    Google Scholar 

  12. Ishijima M (1993) Monitoring of electrocardiograms in bed without utilizing body surface electrodes. IEEE Trans Biomed Eng 40(6):593–594

    Article  Google Scholar 

  13. Lim YG, Kim KK, Park KS (2007) ECG recording on a bed during sleep without direct skin-contact. IEEE Trans Biomed Eng 54(4):718–725

    Article  Google Scholar 

  14. Kim KK, Lim YK, Park KS (2004) The electrically non-contacting ECG measurement on the toilet seat using the capacitivly-coupled insulated electrodes. 26th EMBS conference, San Francisco, CA, USA

  15. Lim YK, Kim KK, Park KS (2004) ECG measurement in the bathtub using the insulated electrodes. 26th IEEE EMBS conference, San Francisco, CA, USA

  16. Leonhardt S, Aleksandrowicz A, Steffen M (2006) Magnetic and capacitive monitoring of heart and lung activity example for personal healthcare. 3rd IEEE-EMBS international summer school and symposium on medical devices and biosensors, MIT, Boston, USA, 4–6 Sep

  17. Lim YG, Kim KK, Park KS (2006) ECG measurement on a chair without conductive contact. IEEE Trans Biomed Eng 53(5):956–959

    Article  Google Scholar 

  18. Aleksandrowicz A, Walter M, Leonhardt S (2007) Ein kabelfreies, kapazitiv gekoppeltes EKG-messsystem (wireless ECG measurement system with capacitive coupling, in German). Biomed Technik 52:185–192

    Article  Google Scholar 

  19. Kato T, Ueno A, Kataoka S, Hoshino H, Ishiyama Y (2006) An application of capacitive electrodes for detecting electrocardiogram of neonates and infants. 28th IEEE EMBS conference, New York City, USA

  20. Harland CJ, Clark TD, Prance RJ (2002) Remote detection of human electroencephalograms using ultrahigh input impedance electric potential sensors. Appl Phys Let 81(17):3284–3286

    Article  Google Scholar 

  21. Gourmelon L, Langereis G (2006) Contactless sensors for surface electromyography. 28th IEEE EMBS conference, New York City, USA, Aug. 30–Sept. 3

  22. http://www.upscale.utoronto.ca/GeneralInterest/Harrison/BCG/BCG.html. Visited: 12 July 2008

  23. Koivistoinen T, Junnila S, Värri A, Kööbi T (2004) A new method for measuring the ballistocardiogram using EMFi sensors in a normal chair. 26th IEEE EMBS conference, San Francisco, CA, USA

  24. Akhbardeh A, Junnila S, Koivuluoma M, Koivistoinen T, Värri A (2005) The heart disease diagnosting system based on force sensitive chair’s measurement—biorthogonal wavelets and neural networks. 2005 IEEE/ASME international conference on advanced intelligent mechatronics, Monterey, CA, USA, 24–28 July

  25. Junnila S, Akhbardeh A, Barna LC, Defee I, Värri A (2006) A wireless ballistocardiographic chair. 28th IEEE EMBS conference, New York, USA, pp 5932–5935, Aug. 30–Sept. 3

  26. Tarjan PP, McFee R (1968) Electrodeless measurements of the effective resistivity of the human torso and head by magnetic induction. IEEE Trans Biomed Eng 15:266–278

    Article  Google Scholar 

  27. Guardo R, Charron G, Goussard Y, Savard P (1995) Contactless recordings of cardiac related thoracic conductivity changes. 17th IEEE EMBS conference, Montreal, Canada, pp 1581–1582, Sept

  28. Richer A, Adler A (2005) Eddy current based flexible sensor for contactless measurement of breathing. Instrumentation and measurement techniques conference (IMTC), Ottawa, Canada, 17–19 May

  29. Scharfetter H, Lackner HK, Rosell J (2001) Magnetic induction tomography: hardware for multi-frequency measurements in biological tissues. Physiol Meas 22:131–146

    Article  Google Scholar 

  30. Igney C, Jäschke S, Pinter R, Waffenschmidt E, Mühlsteff J, Brauers A, Such O (2006) Planar magnetic induction impedance measurement in medicine: principles and applications. Technische Mitteilungen des Haus der Technik e.V., Essen, Germany, 99(1/2):24–30

  31. Steffen M, Aleksandrowicz A, Leonhardt S (2007) Mobile non-contact monitoring of heart and lung activity. IEEE Trans Biomed Circuits Syst 1(4):250–257

    Article  Google Scholar 

  32. Prance RJ, Debray A, Clark TD, Prance H, Nock M, Harland CJ, Clippingdale AJ (2000) An ultra-low-noise electrical-potential probe for human-body scanning. Meas Sci Technol 11:291–297

    Article  Google Scholar 

  33. http://www.crcind.com/wwwcrc/tds/TKC3%20PLASTIK70.PDF, Visited: 2nd Dec 2010

  34. Winter BB, Webster JG (1983) Reduction of interference due to common mode voltage in biopotential amplifiers. IEEE Trans Biomed Eng 30(1):58–61

    Article  Google Scholar 

  35. Winter BB, Webster JG (1983) Driven-right-leg circuit design. IEEE Trans Biomed Eng 30(1):62–65

    Article  Google Scholar 

  36. Kim KK, Lim YK, Park KS (2005) Common mode noise cancellation for electrically non-contact ECG measurement system on a chair. 27th annual IEEE EMBS conference, Shanghai, China

  37. Searle A, Kirkup L (2000) A direct comparison of wet, dry and insulating bioelectric recording electrodes. Physiol Meas 21:271–283

    Article  Google Scholar 

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Authors and Affiliations

  1. Philips Chair for Medical Information Technology, RWTH Aachen University, Aachen, NRW, Germany

    Marian Walter, Benjamin Eilebrecht, Tobias Wartzek & Steffen Leonhardt

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  1. Marian Walter
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  2. Benjamin Eilebrecht
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  3. Tobias Wartzek
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  4. Steffen Leonhardt
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Correspondence to Marian Walter.

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Walter, M., Eilebrecht, B., Wartzek, T. et al. The smart car seat: personalized monitoring of vital signs in automotive applications. Pers Ubiquit Comput 15, 707–715 (2011). https://doi.org/10.1007/s00779-010-0350-4

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  • DOI: https://doi.org/10.1007/s00779-010-0350-4

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