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Electronic force sensing with sensor normalization

  • US 5,440,237 A
  • Filed: 06/01/1993
  • Issued: 08/08/1995
  • Est. Priority Date: 06/01/1993
  • Status: Expired due to Term
First Claim
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1. A method of acquiring data from a individual electronic sensor of a specific type during external stimulus of the individual sensor to correct in-use for variations in sensitivity among sensors of the specific type, the method comprising:

  • providing a general characteristic transfer function indicative of the sensors of a specific type;

    reading a baseline response of the specific sensor in an absence of external stimulus that is indicative of its transfer characteristics;

    while an external stimulus is applied to the sensor, reading an activated response value exhibited by the sensor;

    determining a specific transfer function for the individual sensor by applying the baseline response to the general characteristic transfer function; and

    applying the specific transfer function to the activated response value to determine an indication of the magnitude of the applied external stimulus, thereby correcting in-use for variations in sensitivity among sensors of the specific type.

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