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Pressure-difference warning system

  • US 8,149,140 B2
  • Filed: 01/19/2006
  • Issued: 04/03/2012
  • Est. Priority Date: 01/19/2005
  • Status: Active Grant
First Claim
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1. A pressure-difference warning system for a movable door to warn of a pressure difference between an interior cabin region and an exterior cabin region, comprising:

  • an acoustic signal device;

    an energy supply device;

    a pressure sensor;

    an evacuation-slide sensor;

    a door opening sensor;

    a control device;

    wherein the pressure sensor is adapted to measure a pressure difference between the interior cabin region and the exterior cabin region, separated by the movable door;

    wherein the energy supply device is adapted to provide energy for operating the warning system;

    wherein the control device is coupled to the acoustic signal device, the pressure sensor, the evacuation-slide sensor and the door opening sensor and is adapted to drive the acoustic signal device for outputting an acoustic signal if the following conditions are all satisfied;

    the pressure difference measured by the pressure sensor exceeding a specifiable threshold value, the evacuation slide-sensor signaling that an evacuation-slide lever is in a disarmed position, and the door opening sensor signaling that a door opening lever is moved.

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