Polytec PSV-500, Руководство по оборудованию

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2-1
2 Introduction
2 Introduction
2.1 Area of Application and System Summary
The Polytec Scanning Vibrometer PSV measures the two-dimensional
distribution of vibrational velocity on the basis of laser interferometry. The
system components are shown in the following figure.
Figure 2.1: System components of the PSV-500-HM
Polytec Scanning Vibrometers consist of the basic components optics
(scanning head), electronics (front-end), junction box and control (data
management system). The components are adapted to suit the intended area
of application and can be customized by adding accessories and upgrading
the hardware. The decoders to analyze the vibrometer signal are designed as
digital wide range decoders and thus fit into the digital signal concept.
The scanning head consists of the interferometer, the scanner mirrors to
deflect the laser beam, and a video camera to visualize the measurement
object. As an option, the scanning head contains the geometry scan unit and
the CoherenceOptimizer (for the stabilization of laser modes). The PSV-A-515
digital video camera is available as an accessory. Then you can set which
video camera is being used in the software.
In the front-end the interferometer signal of the vibrometer is demodulated
using a velocity decoder and is transmitted to the PC. Synchronously to the
vibrometer data, reference channels are acquired and generator signals are
emitted. The front-end is applied for the operation as an H system and covers
bandwidths up to 100 kHz.
The PSV-E-530 junction box provides the connections for the reference
channels and generator signals for the operation as an M system with
bandwidths of more than 100 kHz.
The measurement data is acquired and saved in the PC. The PSV software
controls the entire measurement system and offers user-friendly functions to
evaluate the measurement data.
ICP 1
SIGNAL
3
SIGNAL4
SIGNAL
2
SIGNAL
1
TRIG IN
AUX OUT
AUX IN
SYNC
REF 1
REF 2
REF 3
REF4
REF5
REF6
REF7
REF8
ANALOG
IN
GENERA
TOR OUT
DIGITAL
I/O
POWER
O
I
ICP4
PSV-500
VIBROMETER FRONT
-END
ICP 2
ICP
3
ICP5
ICP6
ICP7
ICP8
DMS
DATA MANAGEMENT
SYSTEM
Sc a nning h ea d
Front- e nd
Junction box
PC