(19)
(11)EP 2 747 316 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
03.01.2018 Bulletin 2018/01

(43)Date of publication A2:
25.06.2014 Bulletin 2014/26

(21)Application number: 13198244.9

(22)Date of filing:  18.12.2013
(51)International Patent Classification (IPC): 
H04J 3/06(2006.01)
H04W 56/00(2009.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30)Priority: 24.12.2012 PL 40222012
24.12.2012 PL 40222112

(71)Applicant: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie
30-059 Krakow (PL)

(72)Inventors:
  • Nabielec, Jerzy
    31-201 Krakow (PL)
  • Wetula, Andrzej
    31-271 Krakow (PL)

(74)Representative: Kancelaria Eupatent.pl Sp. z.o.o 
Ul. Kilinskiego 185
90-348 Lodz
90-348 Lodz (PL)

  


(54)A system and a method for synchronization and transmission of information in a distributed measurement and control system


(57) A method for synchronization and transmission of information in a distributed measurement and control system, wherein frames, being a sequence of bits, are transmitted between a master node (M) and a slave node (S), the method comprising cyclically performing the steps of: receiving (101) at the master node (M) an echo frame sent from the slave node (S) as an echo of the last frame received by the slave node (S) from the master node (M); determining (102) the time of frame propagation between sending the frame from the master node (M) and receiving the echo frame at the master node (M); constructing (103) a subsequent frame at the master node (M), the subsequent frame comprising a data field comprising a time adjustment dependent on the determined time of frame propagation; sending (104) the subsequent frame from the master node (M) to the slave node (S); receiving (105) the subsequent frame at the slave node (S); and adjusting (106) a timer (S_T) of the slave node (S) depending on the value of the time adjustment read from the received subsequent frame and sending the received frame to the master node (M) as an echo frame.







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Search report