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Patent Searching and Data


Title:
PANTOGRAPH HEIGHT MEASURING DEVICE AND CALIBRATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2010/084920
Kind Code:
A1
Abstract:
Provided is a pantograph height measuring device which enables easy calibration in the measurement of the height of a pantograph (10a).  Also provided is a calibration method thereof.  The pantograph height measuring device is provided with a line sensor (20) installed on the roof of a car (10), a processing computer (30) for analyzing an image captured by the line sensor (20), and a calibration member (40) detachably provided within the range including the range of fluctuation of the pantograph (10a) and configured by disposing black regions (40b) and white regions (40w) alternately along a vertical direction, wherein the processing computer (30) finds an approximate expression for calculating the height of an overhead wire, the approximate expression being an expression indicating the relationship between the positions of the black regions (40b) and the white regions (40w) obtained from an image of the calibration member (40), which is captured by the line sensor (20), in the image, and the actual heights of the black regions (40b) and the white regions (40w).

Inventors:
FUJISAWA TAKAMASA (JP)
NIWAKAWA MAKOTO (JP)
WATABE YUSUKE (JP)
Application Number:
PCT/JP2010/050723
Publication Date:
July 29, 2010
Filing Date:
January 21, 2010
Export Citation:
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Assignee:
MEIDENSHA ELECTRIC MFG CO LTD (JP)
FUJISAWA TAKAMASA (JP)
NIWAKAWA MAKOTO (JP)
WATABE YUSUKE (JP)
International Classes:
B60L5/26; G01B11/02; G06T1/00
Domestic Patent References:
WO2008044389A12008-04-17
Foreign References:
JP2008104312A2008-05-01
JP2001133225A2001-05-18
JPH02248805A1990-10-04
JP2006250774A2006-09-21
Attorney, Agent or Firm:
MITSUISHI Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
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