Basic Electronics and Electrical Engineering: Chapter 6: Measurement and Instrumentation
Data Acquisition System
A data acquisition system is a complex system that consists of all the required subsystems for collection, conditioning, conversion, processing, display, storage and transmission of data.
DATA
ACQUISITION SYSTEM
A data acquisition
system is a complex system that consists of all the required subsystems for
collection, conditioning, conversion, processing, display, storage and
transmission of data.
To obtain the best
characteristics of the system in terms of performance handling capacity and
economy, the subsystems of a data acquisition system can be clubbed together.
Usually analog information [data] is converted into digital form for
processing, display, storage and transmission.
The processing of data
may involve different operations. They can be simple or complex mathematical
manipulations. The data collected from various points is to be transformed into
a useful format. It will be necessary that the data is to be transmitted. The
transmission may be from one collection point to the other or may be from the
collection point to a computer.
General Data Acquisition System:
A block diagrammatic
representation of data acquisition system in general is shown in Figure. 6.30
It can be observed from
the block diagram that the outputs of the different transducers are supplied to
the signal conditioners. In the process of signal conditioning the outputs of
the transducers may be amplified, attenuated, linearized as per requirement.
The outputs originated
from the signal conditioners are given to the inputs of a multiplexer. From the
output of the multiplexer the analog data can be supplied to recorders meters
for indication or for a display device for display.
Multiplexers output
will be converted into digital format. This digital signal will be used with
printer, digital display, magnetic recorder [tape recorder] for printing a hard
copy, monitoring and recording respectively. The output of the A/D converter
can be supplied to a computer and can also be transmitted.
Basic Electronics and Electrical Engineering: Chapter 6: Measurement and Instrumentation : Tag: Basic Engineering : - Data Acquisition System
Basic Electronics and Electrical Engineering: Chapter 6: Measurement and Instrumentation
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Basic Electronics and Electrical Engineering
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