| 摘要 |
PROBLEM TO BE SOLVED: To secure continuity of data even when a failure occurs in one plant data recording server of redundant configuration. SOLUTION: A plant data recorder 21 has: a process signal input part 1 for capturing a process signal from a plant; signal input processing parts 2A and 2B for sampling process data from a process signal from the process signal input part; signal collection processing parts 3A and 3B for recording process data and time data from the signal input processing parts; data recording parts 4A and 4B for temporarily storing data processed by the signal collection processing parts; redundant plant data recording servers 5A and 5B which are provided with the signal input processing parts, the signal collection processing parts and the data recording parts; and a plant data recording part 6 for recording any one data of the data recording part. In the plant data recording device, the signal input processing parts 2A and 2B each samples the process data from the process signal input part 1 at the same timing. COPYRIGHT: (C)2009,JPO&INPIT |
