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ADAPTIVE ALARM SYSTEM

  • US 20110213212A1
  • Filed: 02/28/2011
  • Published: 09/01/2011
  • Est. Priority Date: 03/01/2010
  • Status: Active Grant
First Claim
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1. An adaptive alarm system is responsive to a physiological parameter so as to generate an alarm threshold that adapts to baseline drift in the parameter so as to reduce false alarms without a corresponding increase in missed true alarms, the adaptive alarm system comprising:

  • a parameter derived from a physiological measurement system having a sensor in communication with a living being;

    a baseline processor that calculates a parameter baseline from an average value of the parameter;

    a plurality of parameter limits that specify an allowable range of the parameter;

    an adaptive threshold processor that calculates an adaptive threshold from the parameter baseline and the parameter limits;

    an alarm generator responsive to the parameter and the adaptive threshold so as to trigger an alarm indicative of the parameter crossing the adaptive threshold; and

    the adaptive threshold responsive to the parameter baseline so as to increase in value as the parameter baseline drifts to a higher parameter value and to decrease in value as the parameter baseline drifts to a lower parameter value.

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