Patent ID: 8253337
Filing Date: 2012-08-28
Classification: B60Q,G08B

Abstract:
1. A lighting system for an emergency exit from an occupied space: an array of lighting elements locatable around the emergency exit to illuminate the exit and facilitate egress for an occupant of the space; sensors to detect one or more trigger conditions; and a control unit to actuate the lighting elements in response to a first trigger condition from any of the sensors, the sensors comprising: an impulse detector operable to send a signal to the control unit indicating that the impulse detector has experienced an impulse; and a roll and pitch detector operable to send a signal to the control unit indicating that the roll and pitch detector has experienced roll and/or pitch, wherein upon detection of the first trigger condition the control unit actuates one or more of the lighting elements to illuminate the exit, wherein the roll and pitch detector is operable to send a signal to the control unit only when a sensed roll and/or pitch is greater than a selected threshold roll and/or pitch, and wherein the thresholds for roll and pitch are independently selectable.