Patent ID: 8314714
Filing Date: 2012-11-20
Classification: G08B

Abstract:
1. A manual trigger device, that comprises: a housing presenting a flexible or mobile surface, means for generating an electromagnetic field; means for sensing an electromagnetic field that senses the electromagnetic field emitted by the means for generating adapted to generate a signal representative of the sensed electromagnetic field; means for modulating an electromagnetic field that modulates the electromagnetic field emitted by the means for generating connected to the flexible or mobile surface of the housing in order that, when the flexible or mobile surface is deformed or moved, the means for sensing senses an electromagnetic field modulated by the means for modulating according to the deformation or movement of the flexible or mobile surface; and a processing circuit that processes the signal emitted by the means for sensing adapted to detect a modulation of the electromagnetic field representative of a push on the flexible or mobile surface with a predetermined pressure and to command, once detection has occurred, a change in appearance of a warning device visible from an outside of the housing, wherein the processing circuit is adapted to command the change in the state of the warning device after emitting an alert message to a central station and receiving a message acknowledging receipt from the central station.