{
  "$type": "site.standard.document",
  "description": "The accuracy of speed calculated by a measurement apparatus is improved. The measurement apparatus includes a first speed calculation module, a second speed calculation module, and a determination module. The first speed calculation module calculates a first speed of a railway vehicle, based on…",
  "path": "/patents/1422728",
  "publishedAt": "2023-09-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B61L25/021",
    "TOSHIBA KK [JP]"
  ],
  "textContent": "The accuracy of speed calculated by a measurement apparatus is improved. The measurement apparatus includes a first speed calculation module, a second speed calculation module, and a determination module. The first speed calculation module calculates a first speed of a railway vehicle, based on satellites radio waves from a satellite in a global navigation satellite system (GNSS). The second speed calculation module calculates a second speed of the railway vehicle from a detection value of a sensor installed in the railway vehicle. The determination module determines which of the first speed and the second speed is employed based on a preset condition.",
  "title": "MEASUREMENT APPARATUS"
}