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Method and device for determining offset values by a histogram method

  • US 6,810,311 B2
  • Filed: 05/16/2002
  • Issued: 10/26/2004
  • Est. Priority Date: 05/16/2001
  • Status: Active Grant
First Claim
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1. A method of determining an offset value of an output signal of a vehicle sensor, comprising the steps of:

  • determining at least one value of the output signal of the vehicle sensor;

    dividing a value range of the output signal of the vehicle sensor into at least two partial ranges;

    allocating the value of the output signal of the vehicle sensor to the partial ranges;

    determining a number of number quantities representing the values of the output signal of the vehicle sensor allocated to the partial ranges;

    triggering a low-pass filter, in whose allocated partial range the value of the output signal determined at a sampling time falls, with a first input signal; and

    triggering at least another low-pass filter, in whose allocated value ranges the value of the output signal determined at the same sampling time does not fall, with a second input signal, the second input signal differing from the first input signal;

    wherein the number of number quantities are determined in the determining step by at least one of the low-pass filters, and wherein the low-pass filters are allocated to the at least two partial ranges, each of the low-pass filters being configured to determine the number quantity allocated to its partial range.

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