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Crash detection when a motor vehicle is at a standstill

  • US 10,059,207 B2
  • Filed: 08/08/2014
  • Issued: 08/28/2018
  • Est. Priority Date: 10/08/2013
  • Status: Active Grant
First Claim
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1. A method for detecting whether a motor vehicle in a parked state and in a switched-off state has been hit or moved, said method comprising the steps of:

  • transmitting at least one sensor signal as a function of a position of the motor vehicle relative to at least one vehicle-external reference object from a sensor to a monitoring device in communication with a control unit for controlling the action of the monitoring device;

    comparing the at least one sensor signal with at least one predetermined signal pattern or with at least one predetermined value interval or with at least one predetermined signal template;

    transmitting at least one control command initiating a safety measure to at least one unit of the motor vehicle, when the comparing step reveals a difference;

    generating an impedance value signal as the sensor signal in an inductive charging system, the inductive charging system including a primary coil and a secondary coil and a charging device of a traction battery of the motor vehicle, wherein the impedance value signal changes when a position of the secondary coil relative to the primary coil changes;

    detecting a collision on the basis of the at least one predetermined signal pattern or the at least one predetermined value interval or the at least one predetermined signal template, which includes a predetermined momentum or a predetermined acceleration or a predetermined displacement path of the motor vehicle or a predetermined timing course; and

    deploying an airbag in an event of a collision.

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