Patent ID: 6253133
Filing Date: 2001-06-26
Classification: B60R

Abstract:
A sitting state detector comprising:a short-range sensor having a short-range detection electrode which is installed in a seat back that supports a back of a passenger and that belongs to a seat having a seat cushion for supporting the passenger thereon and which has a capacitance fluctuating depending on whether or not the back of the passenger is at a predetermined position with respect to the seat back, physical quantity conversion means for generating an electric signal corresponding to the capacitance of the electrode, and detection signal means which detects predetermined changes in the electric signal and which generates a detection signal indicative of whether or not the back of the passenger is at the predetermined position;a sitting state sensor which is provided in the seat cushion and which is different from the short-range sensor in passenger detection mechanism; andcontrol means for changing an adjustment speed for conversion characteristics of the physical quantity conversion means in accordance with a detection state of the sitting state sensor.