| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular ventilator that has a simple structure by achieving a reduction in the number of components while canceling a deterioration with age of a luminescence source and a light receiving element only by wavelength detection with a sensor comprising one luminescence source and one light receiving element. SOLUTION: The sensor 21 detects a carbon dioxide concentration inside a vehicle cabin. The presence or the absence of operation of mounted equipment 33 is determined by a controller 31 according to the detected carbon dioxide concentration. When it is determined that air around the sensor 21 becomes normal air suitable for the setting of a reference value, it allows the sensor 21 to perform detection operation. The output value of the sensor 21 that time is updated and set as a reference value of specific concentration of carbon dioxide so as to store it in a storage part 32. COPYRIGHT: (C)2009,JPO&INPIT |
