Acoustic Test Systems for Automatic Monitoring of Machines and  Production


The characteristic sounds and vibrations of machines or production parts contain wide information about the quality and state of the process. Therefore the analysis of such sound  phenomena provides excellent access to many process parameters. We offer electronic sound inspection systems for industrial and medical purposes. Both passive (listening only to the part / the process) and active (selective speaking and then listening to the echo of the part / the process)can be applied in the test systems.

The technology covers a very wide frequency range from less than 1 Hz to up 10 MHz.  In most cases the relevant sound phenomena occur within this range.

Acoustic monitoring / automatic inspection is X-Ray!  Even very hidden, invisible and inaccessible parts can be supervised. The technology is fast, save and usually less expensive than image processing.

Industrial Applications

  • Detection of defects, dirt or wear in machines and facilities
  • Production monitoring: Individual check of production goods

Steady state system for continuous supervision of machines and production processes
Akustisches Prüfsystem

Medical Applications
Kontraktilität
  • Analyse heart noise and noise of heart valves
  • Noise from prostheses (e.g. hip implant) for wear phenomena
  • Ultrasound methods for  continuous monitoring of the respiratory function
  • Various ultasound methods for cardiology, e. g. blood  flow measurements, volume of the pericardium

Hand held Acoustic Processor
akustik-prozessor
 The hand-held device can easily converted to a customized product by application of a display foil and a specific software package.

  • Based on DSP technology
  • Sound inlets and outlets
  • Grafic LC Display for the visualisation of complex  measurement results
  • Digital and analoge interfaces for data transfer, e.g. to a PC
  • Perormance almost comparable to the bigger steady state system

Acoustic Processor - Example
doppler-aorta

Ultasound Doppler signal from the human heart. By FFT (Fast Fourier Transform) in the Acoustic Processor the blood flow in the aorta can be derived. The frequency of the original ultrasound signal is situated at 4 MHz.