• Home
• Projects

  • Term 1
    • Experiment 1
    • Experiment 2
    • Experiment 3
  • Term 2
    • Experiment 4
    • Experiment 5
    • Experiment 6
  • Term 3
    • Experiment 7
    • Experiment 8
    • Experiment 9
    • Experiment 10
• Feedback

Experimental study

The Experimental setup for fault detection in a blower/fan of three phase induction motor using wireless based vibration measurement technique consists of mainly three components.

1. Three phase induction motor.

2. NI WLS-9234 data acquisition (DAQ) device.

3. LabVIEW Signal Express software.

1. Three Phase Induction Motor:

A 3-phase induction motor has two main parts stator and a rotor. The supply is connected to the stator and the rotor received power by induction caused by the stator rotating flux.

Stator:-The stator consists of a cylindrical laminated & slotted core placed in a frame of rolled or cast steel. The frame provides mechanical protection and carries the terminal box and the end covers with bearings.

Rotor:-- The rotor consists of a laminated and slotted core tightly pressed on the shaft.There are two general types of rotors.

• The squirrel-cage rotor: In this the rotor winding consists of single copper or aluminum bars placed in the slots and short-circuited by end-rings on both sides of the rotor.
• The wound (or slip ring) rotor: In this, an insulated 3-phase winding similar to the stator winding and for the same number of poles is placed in the rotor slots.

2. NI WLS-9234 data acquisition (DAQ) device:

NI WLS-9234 wireless sound and vibration device is a combination of an NI WLS-9163 wireless carrier and an NI-9234 C series measurement module.

NI WLS-9163:- It provides both IEEE 802.11g (Wi-Fi standard) and Ethernet (LAN) connectivity back to a host PC.

NI-9234 C series measurement module:-It provides direct sensor connectivity and built-in signal conditioning for a variety of measurements, including temperature, strain, acceleration, current, and voltage

3. LabVIEW Signal Express:

LabVIEW Signal Express is software for acquiring, analyzing, and presenting signals from data acquisition devices and instruments, with no programming required.

Experimental Procedure:

Induction motor has been connected with WLS-9234 through accelerometer and data cable. DAQ device has been connected with computer either with the help of an Ethernet cable (in case of wired transmission system) or with Wi-Fi (in case of wireless transmission). Vibration signals from motor have been taken as input signal. The distance between DAQ device and computer has been also varied gradually. The vibrations signals can be captured and imported in the LabVIEW software where the signal analysis of data has been carried out.