| 摘要 |
<p>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).</p> |
