{
  "$type": "site.standard.document",
  "description": "The vehicle speed acquisition device of the present disclosure acquires the position information at a predetermined first time interval, acquires the sound pressure of the sound emitted from the vehicle at the second time interval shorter than the first time interval, estimates the vehicle speed at…",
  "path": "/patents/1372746",
  "publishedAt": "2025-01-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60W40/105",
    "TOYOTA JIDOSHA KABUSHIKI KAISHA"
  ],
  "textContent": "The vehicle speed acquisition device of the present disclosure acquires the position information at a predetermined first time interval, acquires the sound pressure of the sound emitted from the vehicle at the second time interval shorter than the first time interval, estimates the vehicle speed at the acquisition timing of the position information and the vehicle speed at the acquisition timing of the sound pressure based on the acquired position information and the first and second time intervals, acquires the estimation accuracy of the vehicle speed based on the change rate of the vehicle speed between the acquisition timings of the position information and the change rate of the sound pressure between the acquisition timings of the sound pressure, and associates the acquired estimation accuracy with the vehicle speed at the acquisition timing of the estimated sound pressure.",
  "title": "VEHICLE SPEED ACQUISITION DEVICE AND ABNORMAL NOISE DIAGNOSTIC SYSTEM"
}