{
  "$type": "site.standard.document",
  "description": "An object sensor and object sensing method that sense the status of the sensing surface by detecting a dynamic impact of a rain drop, not by comparing the signal with a reference value. An object sensor sensing the status of a sensing surface by detecting a light with a photo detector, which light…",
  "path": "/patents/1111845",
  "publishedAt": "2001-07-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60S1/0822",
    "NIPPON SHEET GLASS CO LTD [JP]"
  ],
  "textContent": "An object sensor and object sensing method that sense the status of the sensing surface by detecting a dynamic impact of a rain drop, not by comparing the signal with a reference value. An object sensor sensing the status of a sensing surface by detecting a light with a photo detector, which light has been emitted by a photo emission element and reflected on the sensing surface, comprises: a means for generating a time lag signal (F1) from the output signal (DIN) of the photo detector; a means for calculating a differential signal ( DELTA (F1-DIN)) between the output signal (DIN) of the photo detector and the time lag signal (F1); and a means for judging the status of the sensing surface by detecting the generation of the differential signal ( DELTA (F1-DIN)).",
  "title": "An object sensor and a windshield wiper controller using the same"
}