Occupant based frequency analysis algorithm
AssigneeFord Global Technologies, LLC
InventorsWilliam Jerome Olsen, Ryan Karkkainen
Life of this patent
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Abstract
An occupant classification system (12) for an automotive vehicle (14) is provided. The system (12) includes a weight-sensing device (24) that generates a weight signal and an accelerometer (26) that generates an acceleration signal. The weight-sensing device (24) and the accelerometer (26) are coupled to a seat system (20). A controller (22) is electrically coupled to the weight-sensing device (24) and the accelerometer (26). The controller (22) determines occupant classification in response to the weight signal and the acceleration signal by monitoring a frequency domain representation of the weight signal divided by the acceleration signal. A method for performing the same is also provided.
Claims20
An occupant classification system for an automotive vehicle comprising:
- a weight-sensing device coupled to a seat system and generating a weight signal;
- an accelerometer coupled to said seat system and generating an acceleration signal;
- and
- a controller electrically coupled to said weight-sensing device and said accelerometer, said controller determining occupant classification in response to said weight signal and said acceleration signal by monitoring a frequency domain representation of the weight signal divided by said acceleration signal.
A collision countermeasure system for an automotive vehicle comprising:
- an occupant classification system comprising;
- a weight-sensing device generating a weight signal;
- an accelerometer generating an acceleration signal;
- a seat system coupled to said weight-sensing device and said accelerometer;
- and
- a controller electrically coupled to said weight-sensing device and said accelerometer, said controller determining occupant classification in response to said weight signal and said acceleration signal by monitoring a frequency domain representation of the weight signal divided by a frequency domain representation of the acceleration signal;
- said controller determining whether to activate a countermeasure in response to said occupant classification.
A method of classifying an occupant within an automotive vehicle comprising:
- generating a weight signal in response to a weight of an object in a seat system;
- generating an acceleration signal in response to an acceleration of at least a portion of said seat system;
- and
- determining classification of said object in response to said weight signal and said acceleration signal by monitoring a frequency domain representation of said weight signal divided by said acceleration signal.
An occupant classification system for an automotive vehicle comprising:
- a weight-sensing device coupled to a seat system and generating a weight signal;
- an accelerometer coupled to said seat system and generating an acceleration signal;
- and
- a controller electrically coupled to said weight-sensing device and said accelerometer, said controller determining occupant classification in response to said weight signal and said acceleration signal by monitoring a frequency domain representation of the weight signal divided by the acceleration signal, said controller evaluating the amplitude and frequency of said frequency domain representation to determine weight of an object in said seat system.
Dependencies are inferred from the claim text.