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Title:
SPEED DETECTING DEVICE, SPEED DETECTING METHOD AND TRAIN SPEED DETECTING SYSTEM
Document Type and Number:
Japanese Patent JP2010235046
Kind Code:
A
Abstract:

To simplify an on-ground side device while maintaining highly accurate speed detection on the pick-up side.

A pattern plate 10 formed so that an opening part 12 being a slit part and a shielding part 11 alternately appear at the same interval L along the advancing direction of a train 5, is arranged in a traveling passage 3. The train 5 is provided with a detecting part 30 having three detectors 40 respectively arranged at an installation interval D=[2L/3] along the advancing direction in the front and rear. The detectors 40 output a detection signal (a pulse signal) corresponding to respective detections of the shielding part 11 and the opening part 12 of the pattern plate 10. A pick-up device 50 calculates a speed V of the train 5 by generating the pulse signal of becoming [L/3] in a pulse width from a change in the detection signal from the respective detectors 40 on the respective detecting parts 30.


Inventors:
TAKADA TETSUYA
TAKANASHI TAKESHI
KANEKO AKIRA
SHIKAMA YASUHARU
Application Number:
JP2009087660A
Publication Date:
October 21, 2010
Filing Date:
March 31, 2009
Export Citation:
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Assignee:
KYOSAN ELECTRIC MFG
International Classes:
B61L3/12; B60L3/00
Domestic Patent References:
JPH05252614A1993-09-28
JP2006256352A2006-09-28
JP2003339182A2003-11-28
JP2000168555A2000-06-20
JP2010234840A2010-10-21
JPH0710000A1995-01-13
JPH01120701U1989-08-16
JP2004074876A2004-03-11
JPH05252614A1993-09-28
JP2006256352A2006-09-28
JP2003339182A2003-11-28
JP2000168555A2000-06-20
JP2010234840A2010-10-21
Attorney, Agent or Firm:
Yasushi Kuroda
Takekoshi Noboru
Inoue Ichi



 
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