Device and method for detecting the weight of an object and/or an occupant on a vehicle seat
First Claim
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1. A device for detecting a weight of an object, comprising:
- a vehicle seat for receiving the object to be weighed;
a controllable electric motor for adjusting said vehicle seat;
a sensor for registering a steady-state operating current dependent on a force supplied by said controllable electric motor; and
a control and evaluation circuit deriving a weight signal from the steady-state operating current registered during a controlled adjustment of said vehicle seat.
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Abstract
A device and a method for detecting a weight of an object and/or an occupant on a vehicle seat are described. In which a control and evaluation circuit derives a weight signal from a current consumed by an electric motor during a controlled adjustment of the vehicle seat.
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Citations
10 Claims
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1. A device for detecting a weight of an object, comprising:
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a vehicle seat for receiving the object to be weighed;
a controllable electric motor for adjusting said vehicle seat;
a sensor for registering a steady-state operating current dependent on a force supplied by said controllable electric motor; and
a control and evaluation circuit deriving a weight signal from the steady-state operating current registered during a controlled adjustment of said vehicle seat. - View Dependent Claims (2, 3, 4)
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5. A device for detecting a weight of an object, comprising:
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a vehicle seat for receiving the object to be weighed;
a controllable electric motor for adjusting said vehicle seat;
a sensor for registering a measured variable dependent on a force supplied by said controllable electric motor, said sensor configured to register a rotational speed of said controllable electric motors; and
a control and evaluation circuit deriving a weight signal from said rotational speed registered during the controlled adjustment of said vehicle seat.
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6. A device for detecting a weight of an object, comprising:
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a vehicle seat for receiving the object to be weighed;
a controllable electric motor for adjusting said vehicle seat;
a sensor for registering a measured variable dependent on a force supplied by said controllable electric motor; and
a control and evaluation circuit deriving a weight signal from a difference between the measured variable registered during a controlled adjustment of said vehicle seat in a first direction and a further measured variable registered during a further controlled adjustment of said vehicle seat in a second direction opposite to the first direction. - View Dependent Claims (7)
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8. A control device for an occupant protection device in a motor vehicle, comprising:
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a vehicle seat; and
a device for detecting a weight of an object on said vehicle seat, said device including;
a controllable electric motor for adjusting said vehicle seat;
a sensor for registering a measured variable dependent on a force supplied by said controllable electric motor; and
a control and evaluation circuit deriving a weight signal from the measured variable registered during a controlled adjustment of said vehicle seat, in which intentional triggering of the occupant protection device being prevented or a measured triggering of the occupant protection device being initiated at least as a function of the weight signal supplied by said device for detecting the weight.
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9. A method of detecting a weight of an object, including an occupant, on a vehicle seat, which comprises:
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adjusting the vehicle seat via an electric motor;
registering a measured variable which depends on a force supplied by the electric motor; and
deriving a weight signal from the measured variable registered during the adjusting of the vehicle seat. - View Dependent Claims (10)
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Specification