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Electronic device for safeguarding occupants of a vehicle and method for testing the same

  • US 5,440,913 A
  • Filed: 09/27/1993
  • Issued: 08/15/1995
  • Est. Priority Date: 09/25/1992
  • Status: Expired due to Term
First Claim
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1. A method for testing an electronic device having a first acceleration-sensitive sensor arrangement that generates a first acceleration signal and a second acceleration-sensitive sensor arrangement that generates a second acceleration signal, comprising the steps of:

  • a) determining whether at least one of the first and second acceleration signals exceeds a preselected minimum absolute acceleration value;

    b) if the minimum absolute acceleration value is exceeded by at least one of the first and second acceleration signals, sampling the first and second acceleration signals for a preselected number of sampling periods within a predetermined time interval to generate a plurality of first sample values from the first acceleration signal and a plurality of second sample values from the second acceleration signal;

    c) applying a first compensation factor to each of the plurality of first sample values and a second compensation factor to each of the plurality of second sample values;

    d) summing the compensated first sample values to generate a first evaluation signal and summing the compensated second sample values to generate a second evaluation signal;

    e) determining a difference between the first evaluation signal and the second evaluation signal; and

    f) determining whether the difference between the first and second evaluation signals exceeds a specified threshold value.

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