×

Method for operating a mobile device in a railway system, railway system and mobile device

  • US 9,643,627 B2
  • Filed: 09/10/2013
  • Issued: 05/09/2017
  • Est. Priority Date: 09/27/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for operating a mobile device in a railway system, the rail system having at least one optical waveguide laid next to at least one railway track, the optical waveguide being used as a distributed acoustic sensor into which light pulses are fed, and back-scattered light is detected, which comprises the steps of:

  • providing the mobile device with a sound generator which can be adjusted with respect to a frequency spectrum in a way which identifies the mobile device;

    adjusting the sound generator with respect to the frequency spectrum in a way which designates the mobile device by assigning a frequency selection to the mobile device; and

    acquiring an identification number signal of the mobile device by detecting the back-scattered light from a detected frequency selection.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×