×

Detection system and method for determining an alarm condition therein

  • US 20060192669A1
  • Filed: 01/06/2006
  • Published: 08/31/2006
  • Est. Priority Date: 01/10/2005
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining an alarm condition for a confined space, the method characterised by the steps of:

  • detecting low frequency acoustic signals in the confined space by a secondary microphone sensor;

    generating an alarm signal by the secondary microphone sensor in response to detected low frequency acoustic signals;

    determining whether the alarm signal represents a false alarm condition; and

    inhibiting a primary sensor in response to a determined false alarm condition.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×