| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a time synchronization network circuit enabling accurate time synchronization among a plurality of stations. <P>SOLUTION: The time synchronization network circuit comprises: cables 21a-23a supplying power from a station 2A which is one of second stations and has a switch function to sensor signal measuring stations 3A, 4, 5A; a data transmitting/receiving portion 13, a pulse transformer 211 and the like transmitting/receiving time data of a serial structure indicating reference time between a first station 1 and the station 2A; a switch device 221 and pulse transformers 252,262, 272 and the like provided in the station 2A and superimposing the time date on the cables 21a-23a to transmit them; and a signal processing portion 312 provided on sensor signal measuring stations 3A, 4A, and 5A, and extracting the time data from signals received through the cables 21a-23a to add them to measurement data. <P>COPYRIGHT: (C)2012,JPO&INPIT |
