MicroComputer Based Data Acquisition System:

Micro Computer Based Data Acquisition System:

Computer Based Data Acquisition System – If a large number of inputs are to be measured, some equipment is needed to measure them and display the results in a meaningful and operationally useful fashion. All this is possible with Data Acquisition System, which utilises a computer driven visual display unit (CRT) as an operator aid.

A screen display can be obtained within two seconds by pressing a button. Information may be displayed only when called up. The screen display can be designed in several ways, using a combination of graphical and numeric displays, so as to be of maximum utility to the operator.

Data Acquisition System aids operate in the following manner.

Display information instantly in condensed, understandable and legible manner so that it can be easily assimilated.
Display spatial as well as time variation.
Display vital parameters grouped together logically and concisely, eliminating the need of looking at many scattered instruments.
Display CRT graphic displays of plant sub-systems.
Display short trends on a long and short term basis, as required.
Analyse the data and present the highest priority problem first, and display operator guidance messages.
Analyse the data and present the derived data; do performance calculations to depict the performance of several equipments and plants.
Display alarms, indicating abnormal plant operating conditions on the
Provide trending of analog variables on strip chart recorders, in the form of a histogram on the CRT, and provide dynamic updating of parameters.
Produce a hard copy record of all plant operating events and various plant
Provide a recording of the sequence of events, whenever an emergency occurs.

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