Description
In contrast to complete systems, the newly developed scanning laser vibrometer ScanSet can be operated with different laser vibrometers. It turns a standard single-point laser vibrometer into a fully-fledged scanning laser vibrometer in just a few simple steps. To do this, simply fix the single-point laser Doppler vibrometer using the quick-clamping devices, adjust the laser position using the linear guides and the measurement can begin. The scanning laser vibrometer ScanSet has its own data acquisition with analog inputs for measuring the laser and reference signals. The user-friendly measurement and analysis software enables the vibration data to be evaluated, including graphical representation, in the shortest possible time.
Advantages & Innovations
- Approximately 50 to 80% cheaper than standard complete systems on the market
- Existing single-point laser vibrometers can be used
- Works with all common single-point laser Doppler vibrometers
- Direct interface/data transfer to the vModal software
- Operating deflection shape analysis in the time domain
- Swivel CDD camera
- User-friendly software
- Data acquisition can also be used as a simple FFT analyzer
- Mobile measuring system
- Use of different LDV depending on the application
- Generator output for controlling excitation systems (shaker)
- High-tech innovation Made in Germany
Application & Integration
- Research and development
- Experimental modal analysis
- Visualization of wave propagation
- Optimization of development-related simulations
- Test stands
- Series testing
- Quality control
ScanSet components:
Scanning laser vibrometer
The ScanSet is made of robust aluminum and, in addition to the high-precision laser beam deflection unit, has a CCD camera for imaging the measurement objects. To ensure that the laser beam of any laser vibrometer hits the mirror adjustment axes exactly when set to zero, the ScanSet has linear adjustment units that can be fixed and reliably locked using clamping levers. When measuring with the ScanSet, the quality of the measurement data only depends on the properties and quality of the laser vibrometer used. The electrical connection to the controller is made via a central control cable which supplies the mirror unit with voltage, ensures mirror and camera control and the transmission of the video image.
Controller
In addition to the power supply, the controller contains the control unit for the mirrors and the measurement data acquisition. It is connected to the ScanSet via a central control cable. The inputs for the measurement data and the generator output are brought out as BNC sockets. Communication with the measuring PC takes place via a USB cable. The software uses it to control the mirrors, the CCD camera and transfers the measurement data and the video image to the measuring computer.
Software
The measurement and analysis software contains all the modules required to carry out a laser scanning measurement
- CCD image capture, live display
- Geometry and measurement point editor
- FFT analyzer with a wide range of functions
- Mirror control and control
- Operating deflection shape analysis (ODS)
- Animation, AVI export, UFF, ASCII and MatLab export
- Free offline version
- Modal analysis module (optional)
- Windows 10/11 operating system
- NEW! Module for operating deflection shape analysis in the time domain (optional)
Technical data
| Type | ScanSet-20 kHz | ScanSet-80 kHz | ScanSet-2 MHz |
|---|---|---|---|
| Channel number | 4 | 3 | 2 |
| AD converter | 24-bit | 24-bit | 16-bit |
| Frequency range | 1Hz-20kHz | 1Hz-80kHz | 1kHz-2MHz |
| Frequency resolution | 25600 FFT lines | 25600 FFT lines | 25600 FFT lines |
| Input voltages | ±1V, ±10V | ±1V, ±10V | ±2,5V |
| Coupling | AC, DC, IEPE | AC, DC, IEPE | DC |
| Anti-aliasing filter | Automatically fed | Automatically fed | Automatically fed |
| Generator | Sine, Chirp, Noise and Step Sine | Sinus, Chirp, Rauschen und Step Sinus | No |
Modul for operating deflection shape analysis in the time domain
Reproducible transient processes can be captured and saved sequentially with the ScanSet. If the measurements are triggered via a reference channel, the individual measurements can be combined into a multi-channel measurement with synchronous time signals. These can be played graphically animated. This results in a slower representation of transient processes in technical structures. Typical applications
- Animated representation of wave propagation in components
- Detection of defects (delaminations) in fiber composite materials
- Representation of periodic movements of machine components
The example shows the wave propagation in a brake disc during shock excitation measured with 2500 individual measurements. (See video ScanSet wave propagation)