Antitheft alarm system for motor vehicles
First Claim
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1. An antitheft alarm system for motor vehicles, comprising:
- a warning device coupled to the alarm system;
a triggering device which triggers the alarm system in a case of an unauthorized act upon the motor vehicle;
wherein said triggering device comprises a compass and a control apparatus, said control apparatus including means for storing an actual position value of the motor vehicle received from the compass when the motor vehicle is secured; and
means for determining a deviation from the stored actual position value and automatically activating the warning device when changes from said actual position value are determined.
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Abstract
An alarm system is disclosed which includes a triggering device which triggers a warning device in the case of an unauthorized change of the position of the motor vehicle. The device comprises a compass by means of which the actual position value is reported to a control apparatus. As soon as the compass reports a value to the control apparatus which deviates from the stored position value, the warning device is activated.
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12 Claims
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1. An antitheft alarm system for motor vehicles, comprising:
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a warning device coupled to the alarm system; a triggering device which triggers the alarm system in a case of an unauthorized act upon the motor vehicle; wherein said triggering device comprises a compass and a control apparatus, said control apparatus including means for storing an actual position value of the motor vehicle received from the compass when the motor vehicle is secured; and means for determining a deviation from the stored actual position value and automatically activating the warning device when changes from said actual position value are determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification