Virtual instrumentation (VI) utilizes customizable software and modular measurement hardware to create user-defined measurement and control systems, significantly reducing complexity and cost. Data acquisition (DAQ) is the process of measuring electrical or physical phenomena using such systems, which consist of sensors, measurement hardware, and programmable software. Each virtual instrument in LabVIEW consists of a block diagram, a front panel, and a connector panel, enabling efficient interaction and operation.

1. Virtual Instrumentation
SHIVAM MAURYA M.TECH. 1ST YEAR
DAYALBAGH EDUCATIONAL INSTITUTE
Submitted to Dr. Vishal Sahni

2. What is Virtual Instrumentation(VI)?
 Virtual instrumentation is the use of customizable software
and modular measurement hardware to create user
defined measurement and control systems, called virtual
instruments.
 Software is used to replace a large amount of hardware,
which reduces the complexity and expensiveness of the
instruments.

3. Processing Module
User Interface Display and Control
Database Interface
& Storage
Computer Based Sensor Interface
Sensor Module
• Sensing
• Signal conditioning
• A/D convertor
Information System
interface

5. Data Acquisition (DAQ)
 DAQ is the process of measuring an electric or physical
phenomenon such as voltage, current, temperature, pressure, or
sound with the help of computer.
 A DAQ system consists of sensors, DAQ measurement hardware
and a computer with programmable software.

6. • Virtual instruments represents a fundamental shift from
traditional hardware- centered instrumentation systems to
software-centered systems that exploit the computing
power, productivity and connectivity capabilities of popular
desktop computers.

11.  LabVIEW programs-subroutines are termed as virtual instruments(VIs).
 Each VI has three components: a block diagram, a front panel and a
connector panel.
 The back panel, which is a block diagram, contains the graphical
source code.

12. What is Block diagram and Front
panel?
 The block diagram includes
wires, icons, functions and
other LabVIEW objects.
 The front panel is a user
interface of VI, which has all the
indicators for inputs and
outputs.

14. Thank You! 