Title:
SPEED DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/146428
Kind Code:
A1
Abstract:
This speed detection device that detects train speed on the basis of output signals from a tacho-generator (1a) determines whether or not a tacho-generator (1a) malfunction has occurred, on the basis of the results of a comparison between: the train travel distance measured on the basis of output signals from the tacho-generator (1a) mounted on the train; the train travel distance measured using a means other than the tacho-generator (1a); and the distance information for up to the next prescribed ground facility (P1), obtained from a ground facility (P0).
Inventors:
SAITO KEIICHI (JP)
Application Number:
PCT/JP2013/057686
Publication Date:
October 03, 2013
Filing Date:
March 18, 2013
Export Citation:
Assignee:
NIPPON SIGNAL CO LTD (JP)
International Classes:
G01P3/42; B60L3/00; B60L15/40; G01P21/02
Foreign References:
| JPH02293667A | 1990-12-04 | |||
| JPH04344101A | 1992-11-30 | |||
| JPS60157957A | 1985-08-19 | |||
| JP2010264778A | 2010-11-25 |
Attorney, Agent or Firm:
SASAJIMA, Fujio (JP)
Sasajima Wealth 2 male (JP)
Sasajima Wealth 2 male (JP)
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