Apparatus and method of compensating a seat offset for a load applied to the seat
First Claim
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1. A method of compensating a measurement and controlling a device, the method comprising:
- determining a zero-point of a sensing system;
determining a measurement by subtracting the zero-point from a sensed weight;
determining a rate of change of the zero-point from a delta function, wherein the delta function defines the rate of change of the zero-point as a function of the difference between the sensed weight and the zero-point;
updating the measurement at regular intervals based on the zero-point and the rate of change of the zero-point; and
using the updated measurement to control a device.
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Abstract
A method of compensating a measurement. The method includes determining a zero-point, determining a rate of change of the zero-point, and compensating the measurement based on the rate of change of the zero-point and/or the zero-point. In one embodiment, the compensated measurement is used to control a safety device in a vehicle.
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Citations
34 Claims
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1. A method of compensating a measurement and controlling a device, the method comprising:
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determining a zero-point of a sensing system; determining a measurement by subtracting the zero-point from a sensed weight; determining a rate of change of the zero-point from a delta function, wherein the delta function defines the rate of change of the zero-point as a function of the difference between the sensed weight and the zero-point; updating the measurement at regular intervals based on the zero-point and the rate of change of the zero-point; and using the updated measurement to control a device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of compensating for a load applied to a seat and controlling a safety device, the method comprising:
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retrieving a zero-point of the seat from a computer readable memory; determining a weight of the load by subtracting the zero-point from a total sensed weight, wherein the total sensed weight is the weight of the seat when empty plus the weight of the load applied to the seat; determining a rate of zero-point change from a delta function, wherein the delta function defines the rate of zero-point change as a function of a difference between the total sensed weight and the zero-point; updating the zero-point of the seat at regular intervals based on the zero-point and the rate of the zero-point change; updating the weight of the load based on the updated zero-point; and using the updated weight of the load to control the safety device. - View Dependent Claims (11, 12, 13)
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14. A system for compensating for a load applied to a seat, the system comprising:
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a computer-readable medium configured to store a zero-point of the seat; a sensor configured to sense a total weight, wherein the total weight is the weight of the seat when empty and the load applied to the seat; a processor comprising a delta function module, wherein the delta function module is configured to determine a zero-point change at regular intervals as a function of the difference between the total weight and the zero-point; and a compensating module configured to determine a weight of the load by compensating the total weight based on the zero-point and the zero-point change. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of controlling a restraint device in a vehicle having a seat, the method comprising:
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determining a weight applied to the seat of the vehicle by sensing a total weight and subtracting a zero-point from the total weight, wherein the total weight is the weight of the seat when empty plus the weight of the load applied to the seat; using a delta function to determine a rate of zero-point change as a function of the difference between the total weight and the zero-point; adjusting the zero-point at regular intervals based on the rate of zero-point change; compensating the total weight with the undated zero-point; and activating the restraint device after the total weight has been compensated. - View Dependent Claims (23, 24, 25)
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26. A method of controlling a vehicle, the method comprising:
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sensing a value of at least one phenomenon experienced by the vehicle; using a delta function to determine a rate of zero-point change as a function of the difference between a zero-point and the sensed value; repeatedly and automatically adjusting the zero-point based on the rate of zero-point change; compensating the sensed value with the zero-point; outputting the compensated sensed value; and controlling the vehicle using the compensated value. - View Dependent Claims (27, 28, 29)
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30. A compensating system for use with a sensor adapted to sense a value of at least one phenomenon, the system comprising:
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a computer-readable medium configured to store a zero-point of the sensor; a processor comprising a delta function module, wherein the delta function module is configured to repeatedly and automatically determine a zero-point change as a function of the difference between the zero-point and the sensed value; and a module configured to adjust the sensed value based on the zero-point and the zero-point change. - View Dependent Claims (31, 32, 33, 34)
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Specification