Patent ID: 9205762
Filing Date: 2015-12-08
Classification: B60N,B60R

Abstract:
1. An occupant detection apparatus comprising: an electrostatic capacitance type sensor including an impedance measurement device that outputs an alternating current signal to the electrostatic capacitance type sensor so as to measure an impedance of the electrostatic capacitance type sensor, an occupant discrimination device that discriminates an occupant based on an electrostatic capacitance component of the main impedance and a resistance value component of the sub impedance measured by the impedance measurement device; a recording medium that stores a previously prepared map having two orthogonal axes respectively indicating the electrostatic capacitance component and the resistance value component so as to discriminate the occupant, the map being previously prepared by measuring electrostatic capacitance components and resistance value components under conditions where an occupant subject is seated under a plurality of combinations of temperature and humidity in environment in which the seat is set, wherein the occupant discrimination device uses the map stored in the storage medium to discriminate the occupant based on the electrostatic capacitance component of the main impedance and the resistance value component of the sub impedance measured by the impedance measurement device.