Skip to main content
View expanded cover

International Conference on Pervasive Computing

Pervasive 2008: Pervasive Computing pp 197–212Cite as

A Context-Aware System that Changes Sensor Combinations Considering Energy Consumption

  • Conference paper

Part of the Lecture Notes in Computer Science book series (LNISA,volume 5013)

Abstract

In wearable computing environments, a wearable computer runs various applications using various sensors (wearable sensors). In the area of context awareness, though various systems using accelerometers have been proposed to recognize very minute motions and states, energy consumption was not taken into consideration. We propose a context-aware system that reduces energy consumption. In life, the granularity of required contexts differs according to the situation. Therefore, the proposed system changes the granularity of cognitive contexts of a user’s situation and supplies power on the basis of the optimal sensor combination. Higher accuracy is achieved with fewer sensors. In addition, in proportion to the remainder of power resources, the proposed system reduces the number of sensors within the tolerance of accuracy. Moreover, the accuracy is improved by considering context transition. Even if the number of sensors changes, no extra classifiers or training data are required because the data for shutting off sensors is complemented by our proposed algorithm. By using our system, power consumption can be reduced without large losses in accuracy.

Keywords

  • Wearable computing
  • wearable sensors
  • context awareness
  • power consumption

This is a preview of subscription content, access via your institution.

Chapter
USD   29.95
Price excludes VAT (USA)
  • DOI: 10.1007/978-3-540-79576-6_12
  • Chapter length: 16 pages
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
eBook
USD   74.99
Price excludes VAT (USA)
  • ISBN: 978-3-540-79576-6
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
Softcover Book
USD   99.00
Price excludes VAT (USA)
Learn about institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Miyamae, M., Terada, T., Tsukamoto, M., Nishio, S.: Design and Implementation of an Extensible Rule Processing System for Wearable Computing. In: Proc. of the 1st IEEE Intl. Conference on Mobile and Ubiquitous Systems: Networking and Services (MobiQuitous), pp. 392–400 (August 2004)

    Google Scholar 

  2. Toda, M., Akita, J., Sakurazawa, S., Yanagihara, K., Kunita, M., Iwata, K.: Wearable Biomedical Monitoring System Using TextileNet. In: Proc. of the 10th IEEE Intl. Symposium on Wearable Computers (ISWC 2006), pp. 119–120 (October 2006)

    Google Scholar 

  3. Shen, C.L., Kao, T., Huang, C.T., Lee, J.H.: Wearable Band Using a Fabric-Based Sensor for Exercise ECG Monitoring. In: Proc. of the 10th IEEE Intl. Symposium on Wearable Computers (ISWC 2006), pp. 143–144 (October 2006)

    Google Scholar 

  4. Ouchi, K., Suzuki, T., Doi, M.: LifeMinder: A wearable Healthcare Support System Using Users Context. In: Proc. of the 2nd Intl. Workshop on Smart Appliances and Wearable Computing (IWSAWC 2002), pp. 791–792 (July 2002)

    Google Scholar 

  5. Laerhoven, K.V., Gellersen, H.W.: Spine versus Porcupine: a Study in Distributed Wearable Activity Recognition. In: Proc. of the 8th IEEE Intl. Symposium on Wearable Computers (ISWC 2004), pp. 142–149 (October 2004)

    Google Scholar 

  6. Naya, F., Ohmura, R., Takayanagi, F., Noma, H., Kogure, K.: Workers Routine Activity Recognition using Body Movement and Location Information. In: Proc. of the 10th IEEE Intl. Symposium on Wearable Computers (ISWC 2006), pp. 105–108 (October 2006)

    Google Scholar 

  7. Stiefmeier, T., Ogris, G., Junker, H., Lukowics, P., Tröster, G.: Combining Motion Sensors and Ultrasonic Hands Tracking for Continuous Activity Recognition in a Maintenance Scenario. In: Proc. of the 10th IEEE Intl. Symposium on Wearable Computers (ISWC 2006), pp. 97–104 (October 2006)

    Google Scholar 

  8. Murao, K., Takegawa, Y., Terada, T., Nishio, S.: CLAD: a Sensor Management Device for Wearable Computing. In: Proc. of 7th Intl. Workshop on Smart Appliances and Wearable Computing (IWSAWC 2007) (June 2007)

    Google Scholar 

  9. Ho, J., Intille, S.S.: Using Context-Aware Computing to Reduce the Perceived Burden of Interruptions from Mobile Devices. In: Proc. Conference on Human Factors in Computing System (CHI 2005), pp. 909–918 (April 2005)

    Google Scholar 

  10. Vapnik, V.: The Nature of Statistical Learning Theory. Springer, Heidelberg (1995)

    CrossRef  MATH  Google Scholar 

  11. Kohonen, T.: Self-Organizing Maps. Springer, Heidelberg (1996)

    MATH  Google Scholar 

  12. Wirelss Technologies, Inc.: http://www.wireless-t.jp/

Download references

Author information

Authors and Affiliations

  1. Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita-shi, Osaka, 565-0871, Japan

    Kazuya Murao & Shojiro Nishio

  2. Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan

    Tsutomu Terada

  3. Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan

    Yoshinari Takegawa

Authors
  1. Kazuya Murao
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Tsutomu Terada
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Yoshinari Takegawa
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Shojiro Nishio
    View author publications

    You can also search for this author in PubMed Google Scholar

Editor information

Editors and Affiliations

    Rights and permissions

    Reprints and Permissions

    Copyright information

    © 2008 Springer-Verlag Berlin Heidelberg

    About this paper

    Cite this paper

    Murao, K., Terada, T., Takegawa, Y., Nishio, S. (2008). A Context-Aware System that Changes Sensor Combinations Considering Energy Consumption. In: Indulska, J., Patterson, D.J., Rodden, T., Ott, M. (eds) Pervasive Computing. Pervasive 2008. Lecture Notes in Computer Science, vol 5013. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79576-6_12

    Download citation

    • DOI: https://doi.org/10.1007/978-3-540-79576-6_12

    • Publisher Name: Springer, Berlin, Heidelberg

    • Print ISBN: 978-3-540-79575-9

    • Online ISBN: 978-3-540-79576-6

    • eBook Packages: Computer ScienceComputer Science (R0)