ATE112735T1 - TRACK CIRCUIT WITH CROSS CORRELATION. - Google Patents

TRACK CIRCUIT WITH CROSS CORRELATION.

Info

Publication number
ATE112735T1
ATE112735T1 AT91112161T AT91112161T ATE112735T1 AT E112735 T1 ATE112735 T1 AT E112735T1 AT 91112161 T AT91112161 T AT 91112161T AT 91112161 T AT91112161 T AT 91112161T AT E112735 T1 ATE112735 T1 AT E112735T1
Authority
AT
Austria
Prior art keywords
track
receiver
cross
correlation
rom
Prior art date
Application number
AT91112161T
Other languages
German (de)
Inventor
Helmut Uebel
Original Assignee
Sel Alcatel Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sel Alcatel Ag filed Critical Sel Alcatel Ag
Application granted granted Critical
Publication of ATE112735T1 publication Critical patent/ATE112735T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/188—Use of coded current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Testing Of Coins (AREA)
  • Holo Graphy (AREA)
  • Golf Clubs (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A track circuit is disclosed, the receiver (E) of which carries out, for the purpose of track-release indication, a cross-correlation between a track voltage tapped off on the track (GL) and a reference voltage which is derived from the transmission signal of the track circuit transmitter (S) or generated separately. The maximum of the cross-correlation is sought by receiver (E) and compared with a predetermined threshold value. An embodiment with purely digital operation uses a track current source as transmitter which is controlled by a completely modulated transmission signal which is read out cyclically from a ROM. A microcomputer serves for calculating the cross-correlation function in the receiver (E) and for evaluating and tracking the maximum. The reference voltage is generated with the aid of a further ROM in the receiver (E) which is programmed in the same way as the transmission-side ROM. <IMAGE>
AT91112161T 1990-08-09 1991-07-20 TRACK CIRCUIT WITH CROSS CORRELATION. ATE112735T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4025194A DE4025194A1 (en) 1990-08-09 1990-08-09 TRACK CIRCUIT WITH CROSS CORRELATION

Publications (1)

Publication Number Publication Date
ATE112735T1 true ATE112735T1 (en) 1994-10-15

Family

ID=6411893

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91112161T ATE112735T1 (en) 1990-08-09 1991-07-20 TRACK CIRCUIT WITH CROSS CORRELATION.

Country Status (4)

Country Link
EP (1) EP0470416B1 (en)
AT (1) ATE112735T1 (en)
DE (2) DE4025194A1 (en)
ES (1) ES2065584T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10320680A1 (en) 2003-04-30 2004-12-02 Siemens Ag Circuit arrangement for monitoring the occupancy status of a switch or a track area
DE102005034641B3 (en) * 2005-07-20 2007-03-08 Siemens Ag Circuit arrangement for monitoring the occupancy state of a switch or a track area
DE102005034640B4 (en) * 2005-07-20 2007-05-03 Siemens Ag Circuit arrangement for monitoring the occupancy state of a switch or a track area
CZ303498B6 (en) * 2008-11-26 2012-10-24 Ažd Praha S. R. O. Method of adjusting track and reference voltages for feeding two-phase parallel track circuits for railway

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732355A (en) * 1986-01-09 1988-03-22 General Signal Corporation Rate code decoding system

Also Published As

Publication number Publication date
DE4025194A1 (en) 1992-02-13
EP0470416A2 (en) 1992-02-12
ES2065584T3 (en) 1995-02-16
EP0470416B1 (en) 1994-10-12
DE59103215D1 (en) 1994-11-17
EP0470416A3 (en) 1993-05-12

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Legal Events

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