Title:
雨滴検出方法およびその装置
Document Type and Number:
Japanese Patent JP4211199
Kind Code:
B2
Abstract:
A raindrop detecting apparatus has a temperature sensor, an EEPROM, a processor and a raindrop sensor. A temperature characteristic data is defined by a first temperature data of the temperature sensor and a first output data of the raindrop sensor produced at a first temperature condition, and stored in the EEPROM. The processor updates a raindrop detection threshold by using the stored characteristic data, a second temperature data and a second output data produced at a second temperature, when an engine is started under no-raindrop condition. The processor compares an output data of the raindrop sensor with the raindrop detection threshold to detect a raindrop, while converting at least one of the characteristic data and the output data in correspondence with a temperature data produced at a raindrop detection time.
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Inventors:
Shinji Wakabayashi
Junichi Ishikawa
Akira Kurahashi
Osamu Terakura
Junichi Ishikawa
Akira Kurahashi
Osamu Terakura
Application Number:
JP2000173340A
Publication Date:
January 21, 2009
Filing Date:
June 09, 2000
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01N21/17; G01W1/14; B60S1/08; G01N21/27
Domestic Patent References:
| JP11326186A | ||||
| JP7220184A | ||||
| JP11037827A | ||||
| JP59100034A | ||||
| JP2259572A | ||||
| JP6288917A | ||||
| JP10315920A | ||||
| JP6090046A | ||||
| JP7025222A |
Attorney, Agent or Firm:
Taihei Nonobe
Kazuyuki Yahagi
Kazuyuki Yahagi