Patent ID: 8149140

Claim:
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.