Interactive analysis of air and body sounds of rail vehicles

Task

Development of a multithreading software package for acquisition, processing and analysis of air and body sounds of rail vehicles. Raw data are received via modem. The determined parameters allow an early detection of material defects.

Requirements

• CRC-saved data transfer simultaneously via multiple modems
• Verification and saving the data on the computer
• Assignment of the sound data to the real wheel positions
• Visualization of saved data (frequency and time dependent)
• Search and sort functions for an easier analysis
• Acoustic reproduction of the received data

Solution

Designing of two parallel working programs, one for receiving data and one for analyzing the received data, with LabWindows/CVI (National Instruments). Use of ambitious graphic visualizing possibilities (two- and three-dimensional). Sound playback via Windows API.