Occupant detection system and method for calibrating
First Claim
1. A method for detecting an occupant in a seat, comprising the steps of:
- measuring a first frequency response of an electrode at a first frequency across a range of environmental conditions;
measuring a second frequency response of the electrode at a second frequency across the range of environmental conditions;
comparing the first and second frequency responses measured to define a data set representing an effect of the environmental conditions, and using the data set to compensate for environmental conditions when detecting an occupant;
measuring an actual frequency response of the electrode; and
comparing the actual frequency response of the electrode to the data set to determine an effect of a current environmental condition.
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Accused Products
Abstract
A method includes measuring a first frequency response of an electrode at a first frequency across a range of environmental conditions, measuring a second frequency response of the electrode at a second frequency across the range of environmental conditions, and comparing the first and second frequency responses measured to define a data set representing an effect of the environmental conditions. An occupant detection system includes an electrode and a detector circuit. The detector circuit is configured to measure an actual frequency response of the electrode and compare the actual frequency response to the data set to determine the effect of the current environmental condition.
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Citations
20 Claims
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1. A method for detecting an occupant in a seat, comprising the steps of:
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measuring a first frequency response of an electrode at a first frequency across a range of environmental conditions; measuring a second frequency response of the electrode at a second frequency across the range of environmental conditions; comparing the first and second frequency responses measured to define a data set representing an effect of the environmental conditions, and using the data set to compensate for environmental conditions when detecting an occupant; measuring an actual frequency response of the electrode; and comparing the actual frequency response of the electrode to the data set to determine an effect of a current environmental condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An occupant detection system comprising:
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an electrode; and a detector circuit in communication with said electrode and configured to measure an actual frequency response of said electrode and compare the actual frequency response of said electrode to a data set to determine an effect of an environmental condition;
wherein said data set is defined by comparing a first frequency response measured by said electrode across a range of environmental conditions to a second frequency response measured by said electrode across the range of environmental conditions;said detector circuit includes a signal processor; said signal processor is configured to measure the actual frequency response of said electrode; said signal processor is configured to access a database configured to contain said data set; and said signal processor is configured to compare the actual frequency response to said data set to determine the effect of a current environmental condition. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method comprising the steps of:
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defining a data set representing a range of environmental conditions; measuring an actual frequency response; comparing the actual frequency response to the data set to determine an effect of a current environmental condition; and the step of defining the data set includes measuring a plurality of frequency responses at a plurality of frequencies of an electrode across the range of environmental conditions and generating an equation based on the plurality of frequency responses that represents the effect of the current environmental condition. - View Dependent Claims (19, 20)
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Specification