PSV-400-3D Scanning Vibrometer - Technical Data

General System Specifications

 

 

Frequency range

0 – 80 kHz

Velocity range

0.01 µm/s ... 10 m/s

Working distance

> 0.4 m

Laser wavelength

633 nm (red)

Laser protection class

Class II He-Ne laser, 1 mW per sensor, eye-safe

Pointing accuracy of the single sensor head
(angular resolution)

± 0.002°

Sample size

Several mm² up to m² range

    
PSV-400-3D Hardware

 

 

PSV-I-400 Sensor Head
 
  • Three independent sensor heads are used for 3-D mode
  • High precision scan unit (scanning range ± 20°)
  • High sensitivity OFV-505C vibrometer
  • Color video camera with Auto Focus and 72X Zoom (4X digital, 18X optical)
  • Working distance > 0.4 m
OFV-5000 Vibrometer Controller
 
  • Three Controller, one for each measurement head,  are used in the system
  • 10 velocity ranges: 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 1000 (mm/s/V)
  • 3-D Mode bandwidth: 0 – 80 kHz;
    Instrument bandwidth: 1.5 MHz
  • Four analog low pass filters: 5 kHz, 20 kHz, 100 kHz
    and 1.5 MHz.(3dB point)
  • RS 232 interface for remote control by the Data Management System
PSV-E-401-3D Junction Box
  • Interface between PSV-I-400 Sensor Heads, OFV-5000 Vibrometer Controllers and PSV-W-400-3D Data Management System
  • Input for 8 analog signals, triggers and gate available on BNC connectors, ICP compatible
  • 4 uncorrelated signal generator output channels available on BNC connectors
External Video camera (option)
  • Monitors along the center of the measurement axis
PSV-W-400-3D Data Management System 
 
  • State-of-the-art rack-mountable industrial PC  equipped with:
  • DVD Recorder
  • 21“ LCD Display
  • 100 MB Ethernet network connection
  • 8-channel data acquisition  for vibration frequencies up to 80 kHz
  • RS-232 interface for communication with the Vibrometer Controllers
  • Operating system Windows XP
    (German, English and Japanese version available)
Tripod
  • On request
System cabinet
  • Integrates Vibrometer Controllers, Junction Box and  Data Management System
  • Includes castors for mobile positioning
Cable set
  • Connects Sensor Heads, Vibrometer Controllers, Junction Box and Data Management System

    
PSV-400-3D Software Features

 

 

3-D Alignment

  • The laser beams are matched to 4 to 7 known points of the object geometry
  • Using the parameters of the previous step, the system calculates the sensor head positions related to the coordinate system of the test object.

Scan grid definition

Two methods available:

  • Manual, interactive definition in the live video image by the Advanced Point Selection (APS) Professional utility
  • Data import from CAD- and FEM-systems via Universal File Format (UFF)

Sensor control

Simultaneous control of all three sensor scanning units

Controller operation

Parallel operation of all three Vibrometer Controllers with identical parameters

Data acquisition
  • Simultaneous data acquisition from up to 8 channels (3 vibrometer signals, 5 reference signal)
  • Digital filtering and averaging 
  • Trigger options: external, analog, pre- and post trigger

Data quality

Continuous assessment of the S/N ratio in order to improve data quality by Signal Enhancement (increased number of samples used for averaging) and Speckle Tracking

Target data
  • Vibration components in Cartesian coordinates related to the test objects’ coordinate system
  • Raw vibration signal from each respective vibrometer
  • Velocity (measured), displacement (calculated) and acceleration (calculated) can be displayed
  • Digital filtering and averaging available
  • Data are saved as frequency spectra or time signal (optional)
  • Calculation of the transfer functions between primary signal and reference signal

Data representation
  • Perspective view of the test sample’s 3-D geometry: zero position of the object represented by a wire frame; sample motion represented by a colored 3-D surface model of all three vibration vectors simultaneously
  • Representation of the vibration data as deflection from zero position and color code, provides a three-dimensional impression of the vibration)
  • 2-D or 3-D representation of each vibration component (x, y, z)
  • Display of single spectra or time signals

Data export
  • Windows Automation Interface: Polytec FileAccess (enables data access utilizing Visual Basic or C++)
  • Export of geometry data, spectra, time signals and deflection shapes as UFF and ASCII files (optional)
  • Export of animated 2D- and 3D-models and profiles  as an AVI file

Data import

Import of geometry data from UFF or ASCII files

Signal generator

4-channel internal signal generator providing various excitation signals according to current PSV software