Device for protecting a motor vehicle against theft
AssigneeRobert Bosch GmbH
InventorKlaus Ries-Mueller
Life of this patent
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Abstract
A device is proposed for protecting a motor vehicle against theft. At least one signal processing evaluates a sensor signal of a sensor in a first operating mode for generating an activation signal for a functional unit. A signal unit evaluates the sensor signal in a second operating mode, which differs from the first operating mode, for producing an activation signal for an alarm-signal generator. An operating-state detection is provided for detecting whether the motor vehicle is in a deactivated state. The second operating mode is activated when the motor vehicle is in the deactivated state; the first operating mode is activated when the motor vehicle is in the activated state.
Claims9
A device for protecting a motor vehicle against theft, comprising:
- a sensor for providing at least one sensor signal;
- a functional unit;
- an alarm-signal generator;
- at least one signal processing unit for evaluating the at least one sensor signal in a first operating mode for generating a triggering signal for the functional unit, the at least one signal processing unit evaluating the at least one sensor signal in a second operating mode for generating a triggering signal for an alarm-signal generator, the second operating mode differing from the first operating mode;
- and
- an operating-state detection unit for detecting whether at least one of the motor vehicle is in a deactivated state and an alarm function has been primed, wherein:
- the second operating mode is activated when at least one of the motor vehicle is in the deactivated state and the alarm function has been primed, and
- the first operating mode is activated when the motor vehicle is in an activated state.
A method for protecting a motor vehicle against theft, comprising:
- detecting whether the motor vehicle is in a deactivated state or an alarm function has been primed;
- if it is detected that the motor vehicle is in a deactivated state or an alarm function has been primed, cyclically obtaining signals from vehicle sensors that are used while the vehicle is activated in driving situations;
- and
- evaluating changes in the sensor signals to determine whether an unauthorized tampering of the vehicle exists.
Dependencies are inferred from the claim text.