The purpose of a Data Acquisition system Daq softwares Levels of software Virtual Instrument

1. DATA ACQUISITION
SOFTWARES

2. THE PURPOSE OF A DATA ACQUISITION
SYSTEM
• To measure a physical phenomenon such as light, temperature,
pressure, sound, etc.
• The building blocks of a Data Acquisition system
 Transducer
 Signal
 Signal Conditioning eXtensions for Instrumentation (SCXI)
 Data Acquisition (DAQ) device
 Driver level and application level software
2

3. ARCHITECTURE OF DATA ACQUISITION
SYSTEM
3

4. DAQ SOFTWARES
4

5. ARCHITECTURE OF DAQ SOFTWARE
5

6. LEVELS OF SOFTWARE
6

7. NI - DAQ
• Driver level software
 DLL that communicate with DAQ device
• Supporting National Instruments softwares
 National Instruments LabVIEW
 National Instruments Measurement Studio
• Supporting 3rd party languages
 Microsoft C/C++
 Visual Basic
 Borland C++
 Borland Delphi
7

8. MAX
• Measurement & Automation Explorer
• MAX provides access to all your National Instruments DAQ, GPIB, IMAQ, IVI,
Motion, VISA, and VXI devices
• Used for configuring and testing devices
• Functionality broken into:
 Data Neighborhood
 Devices and Interfaces
 Scales
 Software
8

9. LabVIEW
• Virtual Instrument Engineering Workbench
• Graphical Programming Software
• Designed for ?
9

10. WHAT IS VIRTUAL INSTRUMENT-VI ???
• Simulate a Virtual
Instrument
• Versatile
• It is stored as …
10

11. WHAT IS VIRTUAL INSTRUMENT-VI ???
•Front Panel
 Controls = Inputs
 Indicators = Outputs
•Block Diagram
 Accompanying "program"
for front panel
 Components "wired" together
Input Output
11

12. THANK YOU…