INDUSTRIAL INSTRUMENTATION. digital data acquisition systems & control. PREPARED BY: JOBIN ABRAHAM.

1. INDUSTRIAL
INSTRUMENTATION
[2170913]
ACTIVE LEARNING ASSIGNMENT
TOPIC : DIGITAL DATA ACQUISITION SYSTEMS & CONTROL
UNIVERSITY : GUJARAT TECHNOLOGICAL UNIVERSITY
COLLEGE : VADODARA INSTITUTE OF ENGINEERING
DEPARTMENT : ELECTRICAL ENGINEERING [E.E.– I]
SEMESTER : VII
COMPILED BY :
130800109027 [ JESTY JOSE]
130800109028 [ JOBIN ABRAHAM ]
GUIDED BY : ASST. PROF. PUSHPA BHATIYA
[ELECTRICAL DEPARTMENT]
ACTIVE LEARNING ASSIGNMENT
1

2.  Outline
 Introduction
 The use of the following in DAQ
 Instrumentation systems
 Types of instrumentation systems
 Analog DAQ system
 Digital DAQ system
 References
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3.  Basic block diagram of
DAQ
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4.  The use of the following
in DAQ
1. Signal conditioners
2. Scanners
3. Signal converters
4. Recorders
5. Display device
6. A/D & D/A circuits
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5.  Instrumentation systems
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 An instrumentation system is an aggregation or assembly of
the device united by some form of regular interaction of an
interdependence. It is a group of diverse units or devices
so combined by nature or by an art to form an integral
whole and to function, operate or move in unison and often
in obedience to some form of control.
 Data acquisition systems via analog signals are used in
communications, electronics, and medical applications.
Where in a digitized form it is widely used because
complex circuits are low cost, accurate and simple to
implement.
 Data acquisition systems are used to measure and record
analog signals in two ways:
1. Signals which originate from direct measurement of electric
quantities. These signals may be ac or dc voltages, frequency,
or resistance, etc.
2. Signals which originate from use of transducers.

6.  Types of instrumentation
systems
1. Analog systems : these systems deal with information
in analog form. An analog signal may be defined as
continuous function, such as a plot of voltage vs. time
or displacement vs. force.
2. Digital systems : a digital quantity may consists of a
number of discrete or discontinuous pulses whose time
relationship contains information about the magnitude
and the nature of the quantity under measurement.
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7.  Analog DAQ system
1. Transducer
2. Signal conditioner
3. Multiplexer
4. Calibrating device
5. Integrating device
6. Visual display unit
7. Analog recorders
8. Analog computers
9. High speed cameras and TV equipment
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8.  Digital DAQ system
1. Transducers
2. Amplifiers
3. Filters
4. Analog multiplexers
5. Non-linear analog functions
6. Sample-hold system and A/D converter
7. Programmer sequence
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9. ACTIVE LEARNING ASSIGNMENT 9

10.  Books referred
1. ERNEST O. DOEBELIN “MEASUREMENT SYSTEMS -
Application And Design”, McGRAW-HILL PUBLISHING
COMPANY, Fourth Edition, 1990 Reprint, ISBN : 0-07-
017338-9.
2. S K SINGH “Industrial Instrumentation and Control”,
Tata McGraw Hill Education Private Limited, Third
Edition, Tenth Reprint 2012, ISBN : 978-0-07-026222-
5.
3. Er. R.K. Jain “Mechanical and Industrial
Measurements – Process Instrumentation and
Control”, Khanna Publishers, Eleventh Edition, Ninth
Reprint 2013, ISBN : 81-7409-191-2.
4. A.K. Sawhney “A Course in Electrical and Electronic
Measurements and Instrumentation”, DHANPAT RAI &
Co. Pvt. Ltd., Nineteenth Revised Edition 2013, ISBN :
81-7409-191-2.
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11.  Websites referred
1. http://sine.ni.com/np/app/main/p/ap/daq/lang/en/pg
/1/sn/n17:daq,n21:11/fmid/2998/
2. http://www.ni.com/white-paper/3536/en/
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12. ACTIVE LEARNING ASSIGNMENT 12
ANY QUESTIONS?
SUGGESTIONS ARE WELCOMED!