Title:
ELECTRIC CAR OVERHEAD LINE SEPARATION DETECTING DEVICE AND ELECTRIC CAR OVERHEAD LINE SEPARATION DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/119642
Kind Code:
A1
Abstract:
An electric car overhead line separation detecting device and method for easily detecting
the position where the contact shoe of a pantograph of an electric car separates
from the overhead line. The detecting device (10) has a camera (18A) and an illuminance
sensor (20A) oriented toward the contact point between the contact shoe (16A)
of a pantograph (14A) and the overhead line (12A) of the + side, and illuminance
sensor (24A) not directly detecting the arc light (22A) emitted from the contact
point and detecting the ambient illuminance of the pantograph (14A); and similarly
a camera (18B) and an illuminance sensor (20B) oriented toward the contact point
between the contact shoe (16B) of a pantograph (14B) and the overhead line (12B)
of a - side and an illuminance sensor (24B) not directly detecting the arc light
(22B) emitted from the contact point and detecting the ambient illuminance of
the pantograph (14B). To the illuminance sensors (20A, 24A), a comparator (26A)
for comparing their outputs and outputting a warning if the output difference
is a given value or over. Similarly, to the illuminance sensors (20B, 24B) on the
- side, a comparator (comparing means) (26B) for comparing their outputs and
outputting a warning if the output difference is a given value or over.
Inventors:
ANDOU HIROKI (JP)
WAKUI SATOSHI (JP)
MURATA DAISUKE (JP)
WAKUI SATOSHI (JP)
MURATA DAISUKE (JP)
Application Number:
PCT/JP2007/057377
Publication Date:
October 25, 2007
Filing Date:
April 02, 2007
Export Citation:
Assignee:
HITACHI PLANT TECHNOLOGIES LTD (JP)
ANDOU HIROKI (JP)
WAKUI SATOSHI (JP)
MURATA DAISUKE (JP)
ANDOU HIROKI (JP)
WAKUI SATOSHI (JP)
MURATA DAISUKE (JP)
International Classes:
B60L5/24; G01R31/08; G01S19/14; G01S19/50
Foreign References:
| JP2000224707A | 2000-08-11 | |||
| JP2003319505A | 2003-11-07 | |||
| JPH0926324A | 1997-01-28 | |||
| JPH06203479A | 1994-07-22 | |||
| JPH08265904A | 1996-10-11 |
Attorney, Agent or Firm:
MATSUURA, Kenzo (P.O. Box 176 Shinjuku Sumitomo Bldg. 39F, 6-1, Nishi-shinjuku 2-chome, Shinjuku-k, Tokyo 39, JP)
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