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Sensor auto-calibration

  • US 9,534,924 B2
  • Filed: 11/09/2012
  • Issued: 01/03/2017
  • Est. Priority Date: 11/11/2011
  • Status: Expired due to Fees
First Claim
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1. A method for calibrating a sensor on a mobile device, the method comprising:

  • detecting, via a temperature sensor coupled to the mobile device, temperature of an operating environment for a sensor coupled to the mobile device;

    identifying, via a processor coupled to the mobile device, a temperature bin from a plurality of temperature bins for the sensor using the detected temperature, in response to detecting temperature of an operating environment for the sensor, wherein the temperature bin comprises a range of temperatures, wherein the temperature bin has one or more sensor measurements received at a temperature within the range of temperatures associated with the temperature bin;

    determining, via the processor, that diversity among previously stored sensor measurement data at or near the temperature is below a threshold;

    in response to determining that the diversity associated with the sensor measurement data at or near the temperature is below the threshold, generating, via the processor, calibration data for the sensor for the detected temperature using sensor measurement data from a previously detected temperature, wherein the generating comprises using sensor measurement data from another temperature bin;

    lowering, via the processor, a weight associated with the sensor measurement data from another temperature bin by adjusting one or more parameters of a filter associated with the temperature bin;

    calibrating, via the processor and based at least in part on the generated calibration data, output from the sensor at or near the temperature; and

    operating, via the processor, the sensor based on the calibrated output.

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