Firmenlogo IFN Home Projects About Us Contact Us Links Deutsch
Home Projects About Us Contact Us Links Deutsch
 Ordner
Current projects
 Ordner
Finished projects and references
   Ordner
Studies
     Ordner

Feasibility study for the development of a system to detect the loss of one ore more waggons
on freight trains

for the Deutsche Bahn AG in cooperation with the Ingenieurbüro Herwig Marschelke.

The goal of this study was the analysis of a method to detect the loss of one or more waggons on freight trains
by verifying the presence of an acoustical signal.

The acoustical signal was coupled into the main compressed air supply at the end of the train. The signal was
detected on the locomotive and as long as the acoustical signal was present, the train was complete.

One of the main problems was the very high volume of the moving air, which went up to as much as 140 decibel
when the brakes were applied or disengaged. This forced that a lambda/4 resonator for the acoustical signal
had to be developed to dampen the noise.

pressure box mounted on the test waggon
pressure box mounted on the test waggon
microphone adapter in main air supply pipe
microphone adapter in main air supply pipe
measurement equipment in the engine cab
measurement equipment in the engine cab

 

back to the start of the page back to the start of the page
back to the overview of finished projects and references back to the overview of finished projects and references
back to the complete projects overview back to the complete projects overview

   

IFN Ingenieurbüro für Nachrichtentechnik Helmut Brandl,
Inhaber Helmut Brandl jun., Blarerstrasse 56, D-78462 Konstanz
Tel.: +49 (0)7531 / 91250, Fax: +49 (0)7531 / 91252,
E-Mail: info@ifn-brandl.de, Ust-Ident-Nummer DE 156 599 916
© 2008 by IFN H. Brandl, last update: 20. March, 2007