发明名称 |
An object sensor and a windshield wiper controller using the same |
摘要 |
<p>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)). <IMAGE></p> |
申请公布号 |
EP1113260(A3) |
申请公布日期 |
2002.05.22 |
申请号 |
EP20000311747 |
申请日期 |
2000.12.28 |
申请人 |
NIPPON SHEET GLASS CO., LTD. |
发明人 |
KOKURYO, KAZUTO;NAGAO, SHINJI |
分类号 |
B60S1/08;H01L31/12;(IPC1-7):G01N21/55 |
主分类号 |
B60S1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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