MiSIS – Miniaturized system for intelligent signal processing in mechanical engineering

MiSIS – a cooperation with SINUS Messtechnik GmbH and the BTU Cottbus-Senftenberg

In the frame of the project, partner company SINUS Messtechnik GmbH has developed a signal acquisition module for high-quality processing of audio signals in the audible range (up to 24 kHz) with up to four independent channels. With these two modules, the system performance was demonstrated, e.g., in the automated detection of defects in glass bottles in cooperation with the Brandenburg University of Technology Cottbus-Senftenberg.

For this reason, the complete feature analysis (windowing, Fourier analysis, and temporal and spectral smoothing by filter matrices) and the classification algorithms (density calculation for hidden Markov models, search in finite state machines) were implemented in the base module. By transferring these CPU-intensive algorithms to the FPGA, the computing time was significantly decreased, thereby also enabling the feature analysis and classification techniques to be used for high-frequency signals in time-critical applications.

Gears, valves, rollers: Quality control via acoustic pattern recognition and AI

Fraunhofer IKTS also successfully uses intelligent signal processing and acoustic pattern recognition for in-line quality control of gears, estimation of remaining lifetime of valves, early fault detection in rollers and bearings in spinning frames, structural health monitoring of airplane materials, and automatic softness testing of tissue products during production. The technology is very well suited to testing machine components or as test units in production plants.

Overview: Computing time with regard to signal length

Funding body: Bundesministerium für Bildung und Forschung (BMBF)
Project sponsor: VDI/VDE Innovation + Technik GmbH
Funding reference: FKZ 16ES0297
Project partners: SINUS Messtechnik GmbH, BTU Cottbus-Senftenberg