{
  "$type": "site.standard.document",
  "description": "The device has a radio beacon (2) and a base station (3), where the radio beacon is mounted inside the tank (1). The detection of the opening of the tank cap (4) takes place by the interruption of a shielding between the radio beacon and the base station comprising a tank wall and the tank cap and…",
  "path": "/patents/978020",
  "publishedAt": "2014-02-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K15/0406",
    "METRATEC GMBH [DE]"
  ],
  "textContent": "The device has a radio beacon (2) and a base station (3), where the radio beacon is mounted inside the tank (1). The detection of the opening of the tank cap (4) takes place by the interruption of a shielding between the radio beacon and the base station comprising a tank wall and the tank cap and the accompanying reduction in path loss that is detected by the base station by a unit (5) for measuring the received power. A grid-like metallic structure is additionally incorporated in the tank to increase the shielding effect of the unopened tanks.",
  "title": "Device for detecting the opening of a fuel tank cap"
}