System and method for adjusting a zero point of a seat load sensing system
First Claim
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1. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
- determining a zero point error of the seat weight sensing system; and
adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat;
wherein the step of determining a zero point error comprises the steps of;
determining an unoccupied condition of the vehicle seat, comprising determining whether a seatbelt is latched;
determining a sensed weight on the vehicle seat in response to determining the unoccupied condition; and
determining the zero point error in response to determining the sensed weight.
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Abstract
A method (60) for adjusting the zero point of a vehicle seat weight sensing system (10) includes the step of determining a zero point error (64) of the seat weight sensing system. The method (60) also includes the step of adjusting the zero point error (68) in response to determining that the zero point error was influenced by an object on the vehicle seat.
21 Citations
23 Claims
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1. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining a zero point error of the seat weight sensing system; and adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat;
wherein the step of determining a zero point error comprises the steps of;determining an unoccupied condition of the vehicle seat, comprising determining whether a seatbelt is latched; determining a sensed weight on the vehicle seat in response to determining the unoccupied condition; and determining the zero point error in response to determining the sensed weight. - View Dependent Claims (2, 5, 8, 9, 10)
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3. The method of step 1, further comprising the steps of:
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determining whether the zero point error is within a predetermined range in response to determining that the zero point error was not influenced by an object on the vehicle seat; and adjusting the zero point of the seat weight sensing system to help correct the zero point error in response to the zero point error being within the predetermined range.
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4. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining a zero point error of the seat weight sensing system; adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat; determining an unoccupied condition of the vehicle seat; determining a sensed weight on the vehicle seat in response to determining the unoccupied condition; and determining the zero point error in response to determining the sensed weight; wherein said step of determining an unoccupied condition of the vehicle seat comprises the step of waiting a predetermined time period after the vehicle ignition is deactivated.
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6. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining a zero point error of the seat weight sensing system; and adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat; wherein determining whether the zero point error was influenced by an object on the vehicle seat comprises the steps of; determining the zero point error is not within a predetermined range; determining a cumulative zero point adjustment value as the sum of previous zero point adjustments; and determining the zero point error was influenced by an object on the vehicle seat if the cumulative zero point adjustment value is within the predetermined range. - View Dependent Claims (7)
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11. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining a zero point error of the seat weight sensing system; adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat; monitoring a sensed seat weight; and invalidating the zero point error in response to sensing a decrease in the sensed seat weight.
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12. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining an unoccupied condition of the vehicle seat; determining a zero point error in response to determining the unoccupied condition; determining the zero point error was influenced by an object on the vehicle seat if the zero point error is outside a predetermined range and a cumulative zero point adjustment value is within the predetermined range.
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13. A method for adjusting the zero point of a vehicle seat weight sensing system, the method comprising the steps of:
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determining a zero point error of the seat weight sensing system; and adjusting the zero point error in response to determining that the zero point error was influenced by an object on the vehicle seat. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification