Title :
A virtual instrumentation support system
Author :
Palma, Luis F F Brito ; da Silva, Adelino R F
Author_Institution :
Dept. de Engenharia Electrotecnica, Univ. Nova de Lisbon, Portugal
Abstract :
A Virtual Instrumentation Support System that permits one to run several concurrent virtual instruments has been developed. In this paper, we present a Multi-Tasking Graphical Environment (named AGMT) and two main virtual instrumentation applications-a digital oscilloscope and a digital image processor. The AGMT was designed to work in real-time and interact with sensors and actuators via data acquisition boards, and other input-output devices. The AGMT implements a preemptive and priority multi-tasking system under the DOS operating system. The AGMT allows the user to define, in run-time, the task scheduling policy of the concurrent applications. The virtual environment may be easily extended to run other typical Supervisory Control and Data Acquisition (SCADA) applications
Keywords :
SCADA systems; data acquisition; digital instrumentation; engineering graphics; graphical user interfaces; image processing; multiprogramming; operating systems (computers); oscilloscopes; processor scheduling; real-time systems; virtual instrumentation; AGMT; DOS operating system; SCADA applications; concurrent applications; concurrent virtual instruments; data acquisition boards; digital image processor; digital oscilloscope; input-output devices; multi-tasking graphical environment; preemptive multi-tasking system; priority multi-tasking system; real-time operation; task scheduling policy; virtual instrumentation support system; Control systems; Data acquisition; Digital images; Graphical user interfaces; Instruments; Object oriented programming; Operating systems; Oscilloscopes; Real time systems; SCADA systems;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.813326
