| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a remote plant monitoring system capable of using an inexpensive narrow band communication line. <P>SOLUTION: This system comprises a remote plant 22 having a data generation part 4-3 for generating, when plant data collected in a fixed period are changed, plant data change information in which the time of change of the plant data is added to the value of the changed plant data and a communication part 4-1 for transmitting the generated plant data change information; and a central system 12 having a data reproduction part 6-4 for reproducing the plant data on the basis of the plant data change information transmitted through an always-on connection communication line 31 and a monitoring device for displaying the reproduced plant data. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
