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REDUNDANT POWER CONTROL FOR RESPIRATORY SYSTEM HEATERS

  • US 20090107493A1
  • Filed: 10/29/2007
  • Published: 04/30/2009
  • Est. Priority Date: 10/29/2007
  • Status: Active Grant
First Claim
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1. A humidifier system comprising:

  • at least one heating element;

    at least two processors connected to, and configured to disable, the at least one heating element upon the failure of any one of the processors;

    at least two control paths from the at least two processors to the at least one heating element, both of the control paths being necessary for activating the respective heating element; and

    a watchdog configured to monitor at least one of the processors and to disable the at least one heating element in response to the monitoring of the at least one processor.

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