To obtain a ground device and an automatic train speed controlling system with good operation efficiency capable of freely setting a plurality of provisional speed limits regardless of a trajectory section, and reducing a transmission information volume while keeping security.
This ground device 4 is provided with a logical part 4a receiving information of provisional speed limits including a start point and an end point of a provisional speed limit section and a provisional limit speed from a central unit 5, and summarizing the information of a plurality of provisional speed limits into the information of at least one provisional speed limit, and a transmission part 4d for transmitting the information of the provisional limit speed received by the logical part or the information of the summarized provisional speed limit to an onboard control unit 2. The logical part 4a summarizes a plurality of provisional speed limits by extending a rear provisional speed limit to an rear end point of the trajectory section where the rear provisional speed limit is provided, or extending the forward provisional speed limit to a start point of the rear provisional speed limit section.
ASUKA AKIRA
| JP2004359020A | 2004-12-24 | |||
| JPH0529875U | 1993-04-20 | |||
| JP2004359020A | 2004-12-24 | |||
| JPH0529875U | 1993-04-20 |
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka