MPV-800 Multipoint Vibrometer

Organization: Polytec GmbH
Year: 2017

The MPV-800 Multipoint Vibrometer is an optical multichannel vibration measurement system with up to 48 optical phase synchronized channels based on Laser Doppler vibrometry. Non-stationary, transient vibration phenomena of complex structures require the synchronous acquisition of the real-time motion of a relevant, representative number of sample points. In applications with challenging surface conditions like high voltage, delicate structures or soft materials, it is not possible to apply conventional, contact-based vibration sensors. For such applications, the straightforward approach would be to replace every tactile sensor with an optical vibration sensor. Using individual separate vibrometers is typically limited to cases requiring only a small number of sample points due to cost. The first multi-beam approaches with fixed beam configurations were lacking flexibility and only suited for a limited number of specific applications. The concept of the MPV-800 Multipoint Vibrometer allows a flexible, application-specific configuration of individual interferometric sensor heads connected to one central optical unit, which contains one laser system and a multi-channel interferometric detection system.