WLet Software

Letscan edits scientific softwares embedding state of the art and innovative algorithms dedicated to following applications :

• analysis of time-frequency components of complex signals
• frequency-response analysis and vibratory diagnosis of rotating machines
• Rotlet : analysis of  rope twisting distributed along ropeway line
• Wirelet : analysis of magneto-inductive rope signals

These software tools are essential for professionnals interested in going deeper in signal exploration to improve the reliability of inspection tests.

The Wirelet software which is available in a cross-platform version allows rope inspectors to evaluate the damage of a steel wire rope with acuity and reliability which goes far beyond the recommendations of the standards and regulations in force.
Wirelet uses the good properties of wavelet multiresolution analysis to scan the space-frequency information contained in magneto-inductive signals, especially  weak signals that escape human vision.
The core of the Wirelet innovation is the construction of wavelet frames on dense and super-resolution grids that span the space-frequency plane associated with original subband coding algorithms invented by Letscan.
Wirelet astutely performs the calculations of the wavelet scalograms with a fast and parallel implementation which makes it possible to analyze the signatures of magneto-inductive signals in almost real time.
Functionality based on the extraction of the ridges of scalograms makes it possible to locate the signatures of failures in a robust and automatic way.
The rope inspector finally supervises the results with the help of indicators and qualifies the identified defects before editing of a fully documented magneto-inductive inspection report.