{
  "$type": "site.standard.document",
  "description": "In an automatic train stop system in which a track circuit (3) is divided into track circuit sections (1T; 2T; and 3T), and a digitized train control information telegram (ATS telegram) (8) is transmitted through the track circuit sections on carriers having different frequencies, a carrier sensor…",
  "path": "/patents/1080982",
  "publishedAt": "2005-01-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L15/38",
    "HITACHI LTD [JP]"
  ],
  "textContent": "In an automatic train stop system in which a track circuit (3) is divided into track circuit sections (1T; 2T; and 3T), and a digitized train control information telegram (ATS telegram) (8) is transmitted through the track circuit sections on carriers having different frequencies, a carrier sensor (12) mounted on a train (5) receives a carrier in the track circuit (3) and detects a track circuit boundary (31) by detecting a level change of the carrier, whereby an onboard system grasps the position thereof and controls the train (5) based on the information of the ATS telegram (8).",
  "title": "Automatic train stop system"
}