Seated-state detecting apparatus

摘要

A seated-state detecting unit for determining the occupancy of a seat in a passenger compartment of a vehicle including wave transmitting sensors such as ultrasonic sensors for transmitting waves into the passenger compartment toward the seat and receiving reflected waves from the passenger compartment and specifically from the seat and its contents, a weight sensor for detecting weight applied onto the seat, and an evaluation circuit to which outputs of the wave sensors and the weight sensors are input and which evaluates a seated-state, based on the outputs from the wave sensors and weight sensor.