Method and system for coherent aggregation and synchronization of gathered data from spread devices

A method is described, for gathering time-variable data from electronic slave devices (8) in data communication through a data transmission channel (7) with an electronic mas ter device (9. The slave devices (8) periodically measure and store a current value of at 5 least one respective time-variable parameter (P1(t), ... Pn(t)). The master device (9) sends a freeze command to the slave devices (8). Upon receipt of the freeze command from the master device (9), the slave devices (8) freeze the last measured value of the at least one time-variable parameter. During a data-gathering time interval following sending of the freeze command, the master device (9) gathers the frozen values from the slave 10 devices (8). (Fig.3) 7 -17A7 1 -H-- 1~ac 13f3A11 AlIJ rAI:Vr Measure parameters and store values in first memory freeze NO command 101 received copy values of from first memory 11 to second memory 13; ATG =ATG + AT set ATG = 0 NO' ,, maximum NO polling ATG elapsed NO command ? received? YES 106 YES 107 delete data- transmit from second requested data memory 13 to master device other 108, data in YES second memory 13 Fig.3