OPTICAL DETECTOR FOR VEHICLE

摘要: PURPOSE:To make it possible to always accurately detect only the generation of a dust fluid, by detecting fluid paying attention fact that time length causing output change an optical detector is longer than mud particle, water splash or snow same change. CONSTITUTION:The open air guided into vehicle from introducing port part body but light transmitting type S opposing source arranged in middle. When allowed run, foreign matter such as mud, stream impinges against lower side inner wall 21 and subsequently falls therealong be prevented penetrating base 22. Therefore, residual component which was almost removed smoothly enter 22 along with stream. However, because detection duration rain, 3ms less shown codes P1-P5 while mainly contained black smoke exhausted diesel engine 30-1,700ms, can certainly detected said times.