Data sampled from plants are registered as temporal data, combined with time stamps. We developed a real-time data server which periodically acquires temporal data and transmits them to clients for graphic presentation. The real-time data server consists of multi threads scheduled based on the rate monotonic theory. This paper explains the design of a real-time data server. The prediction for schedulability of it based on the rate monotonic theory has been verified with an experiment on an actual system. >
['Hiromitsu Shimakawa', 'Hideji Ohnishi', 'Ichiro Mizunuma', 'Morikazu Takegaki']
Acquisition and service of temporal data for real-time plant monitoring