发明名称 |
SENSING DEVICE AND ITS SENSING METHOD, AND WIPER CONTROLLING APPARATUS USING THE SAME |
摘要 |
In a rain sensing device, a sensing device that can estimate the size of raindrops or the like without a large amount of hardware resources, and its sensing method, and a wiper controlling apparatus using the same can be provided. In a sensing device, light emitted from a light-emitting member is introduced to a transparent plate, reflected by a sensing surface of the transparent plate and then received by a photo-detector, thereby detecting a condition of the sensing surface. The sensing device includes a sampling part for sampling signals from the photo-detector, a compression part for compressing signals in a sequence of the sampled signals when they continue within a single segment, where a plurality of the segments defined by a plurality of predetermined values are set with respect to an input signal, a calculation part for calculating a compressibility from the number of the sampled signals to be compressed by the compression part and the number of the sampled signals that have been compressed thereby, and a judging part for judging the condition of the sensing surface based on the compressibility. |
申请公布号 |
WO02055351(A3) |
申请公布日期 |
2002.11.07 |
申请号 |
WO2002JP00024 |
申请日期 |
2002.01.09 |
申请人 |
NIPPON SHEET GLASS CO., LTD.;KOKURYO, KAZUTO;NAGAO, SHINJI |
发明人 |
KOKURYO, KAZUTO;NAGAO, SHINJI |
分类号 |
G01N21/17;B60S1/08;G01W1/14 |
主分类号 |
G01N21/17 |
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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