Occupant based frequency analysis algorithm
First Claim
1. 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.
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Accused Products
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.
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Citations
20 Claims
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1. An occupant classification system for an automotive vehicle comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A collision countermeasure system for an automotive vehicle comprising:
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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. - View Dependent Claims (7, 8, 9, 10)
an object classification sensor electrically coupled to said controller and generating a object classification signal;
said controller determining whether to activate said countermeasure in response to said object classification signal.
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10. A system as in claim 9 wherein said object classification sensor is at least one of:
- an infrared sensor, an ultrasonic sensor, a heart rate sensor, or a force array sensor.
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11. A method of classifying an occupant within an automotive vehicle comprising:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An occupant classification system for an automotive vehicle comprising:
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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. - View Dependent Claims (19, 20)
an object classification sensor electrically coupled to said controller and generating an object classification signal;
said controller determining whether to activate a countermeasure in response to said object classification signal.
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Specification