A virtual instrumentation support system

Author

Brito Palma, Luís F F ; da Silva, Adelino R F

Author_Institution

Dept. de Engenharia Electrotecnica, Univ. Nova de Lisboa, Portugal

Volume

3

fYear

1998

fDate

1998

Firstpage

273

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 applications

Keywords

SCADA systems; multiprogramming; virtual instrumentation; DOS operating system; concurrent virtual instruments; data acquisition boards; input-output devices; multi-tasking graphical environment; supervisory control and data acquisition applications; 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1998 IEEE International Conference on

Conference_Location

Lisboa

Print_ISBN

0-7803-5008-1

Type

conf

DOI

10.1109/ICECS.1998.813985

Filename

813985