Method for establishing the occupation of a vehicle seat
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Abstract
The invention relates to a method for differentiating between people and other objects on vehicle seats, by recording and evaluating the pressure distribution caused on the seat by said people and objects, the mean deviation of the signal at a certain position in relation to the mean signal of the adjacent region enabling the differentiation between people and other objects to be made. The invention is advantageous in that only few criteria are required and the criteria are not bound to any specific sensor structures (metrical, discrete etc.). Furthermore, where required, the individual criteria need only be combined in a simple manner.
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Citations
74 Claims
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1-28. -28. (canceled)
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29. A method for differentiating between persons and objects on a vehicle seat, the method comprising the acts of:
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sensing a pressure distribution occurring on the vehicle seat; and evaluating the pressure distribution to differentiate between a person and an object on the vehicle seat in accordance with a mean deviation of a signal at one position from a mean signal neighboring said one position. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 49, 52, 55, 64, 68, 71)
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37. A method for differentiating between persons and objects on a vehicle seat, the method comprising the acts of:
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sensing a pressure distribution occurring on the seat; evaluating the pressure distribution by dividing its area into partial areas, wherein certain constellations of active to inactive areas are evaluated as a person, an active area being one in which a cumulative signal is above a defined threshold. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 50, 53, 56, 65, 67, 69, 72, 74)
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47. A method for differentiating between persons and objects on a vehicle seat, the method comprising the acts of:
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sensing a pressure distribution occurring on the vehicle seat; evaluating the pressure distribution by forming a cumulative signal in a partial area of a total area in which the pressure distribution exists, and deriving a result value from the cumulative signal and a defined threshold, the result value differentiating between a person and an object being on the vehicle seat. - View Dependent Claims (48, 51, 54, 57, 60, 62, 66, 70, 73)
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58. A method for differentiating between persons and objects on a vehicle seat, the method comprising the acts of:
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sensing a pressure distribution occurring on the vehicle seat caused by one of a person and an object; and performing an evaluation by one or more of the following acts; a) evaluating the pressure distribution to differentiate between a person and an object on the vehicle seat in accordance with a mean deviation of a signal at one position from a mean signal neighboring said one position; b) evaluating the pressure distribution by dividing its area into partial areas, wherein certain constellations of active to inactive areas are evaluated as a person, an active area being one in which a cumulative signal is above a defined threshold; c) evaluating the pressure distribution by forming a cumulative signal in a partial area of a total area in which the pressure distribution exists, and deriving a result value from the cumulative signal and a defined threshold, the result value differentiating between a person and an object being on the vehicle seat; and logically linking the results of differentiating between the person and another object in accordance with the above evaluating acts. - View Dependent Claims (59, 61, 63)
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Specification