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Restraining system comprising a restraining device for protecting at least one passenger and a method for controlling a restraining system

  • US 20030034194A1
  • Filed: 07/31/2002
  • Published: 02/20/2003
  • Est. Priority Date: 08/29/2000
  • Status: Active Grant
First Claim
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1. A restraint system having a restraint device for protecting at least one passenger, the restraint system having an acceleration sensor (1) for measuring an acceleration of the vehicle, an analog/digital converter (2) for converting an output signal of the acceleration sensor (1) into a digital signal corresponding to the acceleration, a processor (3) for carrying out a wavelet transformation of the digital signal into a frequency signal, a memory (4), and an actuator (5) for controlling the restraint device (6), wherein the processor (3) subdivides the frequency signal into individual frequency ranges, the processor (3), for each frequency range measures the specific maximum and the specific average signal energy in order to extract features;

  • the processor (3) determines a crash type on the basis of the features, the processor (3) determines from the frequency signal a measure for the braking acceleration energy; and

    the processor (3), as a function of the measure and of the crash type, transmits a control signal to the actuator (5).

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