Development of a palpation sensor by using multi signal processing - Fundamental characteristics of the prototype sensor system

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The human finger tip is the most useful tactile sensor part for distinguishing textures. It is possible for fingers to recognize not only surface textures of objects but also the information inside object. "Palpation" in the medical field is an example of techniques utilizing the ability. This study aims to develop a palpation sensor that can obtain both surface and inside information of objects. The palpation sensor that several bimorphic piezoelectric elements are used as sensory receptors is proposed. The output from each element with the position and the velocity information is acquired. Using the position information, it is possible to remove the noise by adjusting time phase of the signals from each bimorphic piezoelectric element. Furthermore, we aim to obtain the information of the sample surface and inside objects by applying additional signal processing to sensor outputs. In this paper, the fundamental characteristics of the prototype sensor system were investigated. First, the signal processing to convert the time history information from the sensor into the positional information was investigated in order to eliminate the influence of mobile speed. Next, the contact condition between sample surface and tip of bimorph piezoelectric element was tested. Finally, electrical cross-talk among bimorphic piezoelectric elements was examined.

Original languageEnglish
Title of host publicationICMIT 2009 - Mechatronics and Information Technology
DOIs
Publication statusPublished - 2010 May 10
Event2009 International Conference on Mechatronics and Information Technology, ICMIT 2009 - Gwangju, Korea, Republic of
Duration: 2009 Dec 32009 Dec 5

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7500
ISSN (Print)0277-786X

Other

Other2009 International Conference on Mechatronics and Information Technology, ICMIT 2009
CountryKorea, Republic of
CityGwangju
Period09/12/309/12/5

Keywords

  • Bimorphic piezoelectric element
  • Multi signal processing
  • Palpation sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Nagai, H., Okuyama, T., & Tanaka, M. (2010). Development of a palpation sensor by using multi signal processing - Fundamental characteristics of the prototype sensor system. In ICMIT 2009 - Mechatronics and Information Technology [75000M] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7500). https://doi.org/10.1117/12.858453