Length measurement by speckle velocimeter using two self-mixing laser diodes

Tatsuya Takasu, Sahin Ozdemir, Shigenobu Shinohara, Hiroaki Ikeda, Hirofumi Yoshida, Masao Sumi

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

Simultaneous measurement of both length and velocity of a thin sheet of paper on a moving plate was successfully done by using the speckle phenomena in two self-mixing laser diodes, which are aligned parallel to the plates moving direction and illuminate vertically onto the sheet surface. The measurement error was less than 6mm. This main result verify that the method is useful to measure a long moving sheet of paper or steel.

Original languageEnglish (US)
Number of pages1
StatePublished - Jan 1 1998
EventProceedings of the 1998 International Symposium on Information Theory, CLEO/EUROPE'98 - Glasgow, Scotland
Duration: Sep 14 1998Sep 18 1998

Other

OtherProceedings of the 1998 International Symposium on Information Theory, CLEO/EUROPE'98
CityGlasgow, Scotland
Period9/14/989/18/98

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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