초록 ▼

Methods for controlling deployment of an occupant restraint device in a vehicle and determining whether an object is a child seat in which one ultrasonic transducer is arranged on a ceiling of the vehicle and another ultrasonic transducer is arranged at a different location in the vehicle, ultrasoni

Methods for controlling deployment of an occupant restraint device in a vehicle and determining whether an object is a child seat in which one ultrasonic transducer is arranged on a ceiling of the vehicle and another ultrasonic transducer is arranged at a different location in the vehicle, ultrasonic waves are transmitted from each transducer into the passenger compartment and received thereby, and the distance from each transducer to the object is calculated based on the time difference between the transmitted waves when transmitted from the transducer and the reflected waves when received at the transducer. Deployment of the occupant restraint device is controlled based on the calculated distances and/or a determination is made whether the object is a child seat based on the calculated distances.

대표청구항 ▼

1. A method for controlling deployment of an occupant restraint device in a vehicle, comprising the steps of:arranging a first ultrasonic transducer on a ceiling of the vehicle and a second ultrasonic transducer at a different location in the vehicle such that a first axis connecting the first and s

1. A method for controlling deployment of an occupant restraint device in a vehicle, comprising the steps of:arranging a first ultrasonic transducer on a ceiling of the vehicle and a second ultrasonic transducer at a different location in the vehicle such that a first axis connecting the first and second transducers is substantially parallel to a second axis traversing a volume in a passenger compartment of the vehicle above a seat in which an object is situated, transmitting ultrasonic waves from the first transducer into the passenger compartment; receiving ultrasonic waves reflected off the object in the passenger compartment at the first transducer; calculating a first distance from the first transducer to the object based on the time difference between the transmitted waves when transmitted from the first transducer and the reflected waves when received at the first transducer; transmitting different ultrasonic waves from the second transducer into the passenger compartment; receiving ultrasonic waves reflected off the object in the passenger compartment at the second transducer; calculating a second distance from the second transducer to the object based on the time difference between the transmitted waves when transmitted from the second transducer and the reflected waves when received at the second transducer; and controlling deployment of the occupant restraint device based on the first distance and the second distance.