Patent ID: 9413816
Filing Date: 2016-08-09
CPC Classification: G08B,H04B,H04L

Claim Text:
1. A method of communicating between at least one event detector sensor and a collector of event detection data transmitted by the sensor in the form of an event signalling message the modulation of which is defined by at least one spreading code, wherein the method comprises the steps implemented by the sensor: upon detection of an event during a given cycle, generation of event detection data; reception of a synchronization message transmitted according to a transmission cycle by the collector, said synchronization message comprising a seed for a pseudo-random generation of at least one spreading code, wherein the seed is specific to the transmission cycle; pseudo-random generation of at least one spreading code on the basis of said seed; transmission of an event signalling message the modulation of which is defined by said at least one spreading code generated randomly, the event signalling message comprising the event detection data; and processing the synchronization message of the cycle which follows said given cycle.