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)
  • Holo Graphy (AREA)
  • Testing Of Coins (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
DE102005034640B4 (en) * 2005-07-20 2007-05-03 Siemens Ag Circuit arrangement for monitoring the occupancy state 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
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
EP0470416B1 (en) 1994-10-12
EP0470416A2 (en) 1992-02-12
EP0470416A3 (en) 1993-05-12
DE59103215D1 (en) 1994-11-17
ES2065584T3 (en) 1995-02-16
DE4025194A1 (en) 1992-02-13

Similar Documents

Publication Publication Date Title
ATE320015T1 (en) DEVICE FOR DETECTING APPROACHES
FI87028B (en) METHODS FOER ATT REGLERA EFFEKT HOS EN SPAENNINGSSTYRD EFFEKTFOERSTAERKARE OCH KOPPLING FOER ANVAENDNING I METODEN.
EP0701752A4 (en) METHOD AND APPARATUS FOR DETERMINING THE POSSIBILITY OF USING A SIGNAL
ES2095142T3 (en) TRANSMITTER FOR A REMOTE CONTROL GROUP.
DK0418989T3 (en) obscuration
ATE189567T1 (en) CONTROL DEVICES FOR DIGITAL RADIO RECEIVER
ATE513372T1 (en) DELAY CONTROL CONTROL IN A DIGITAL RADIO TRANSMISSION SYSTEM
KR870003446A (en) Detective car alarm
DE59103215D1 (en) Track circuit with cross correlation.
DK0439237T3 (en) Method and apparatus for deactivating electromagnetic detection marks
DE59914799D1 (en) Device for suppressing the reception of vehicle-emitted interference radiation
KR940023069A (en) Digital infrared communication system
DE50208381D1 (en) Optoelectronic sensor
DE59410060D1 (en) Circuit arrangement for the detection of adjacent channel interference
KR910021060A (en) Communication method
ATE121883T1 (en) CIRCUIT OF AN OPTOELECTRONIC RECEIVER.
GB2286920B (en) An optical transmitter having an APC circuit with automatic bias current control
EP0091619A3 (en) Remote control device
JPS57133527A (en) Optical recorder and reproducer
DE59407835D1 (en) Circuit arrangement for generating a stop signal for a station search
FR2724230B1 (en)
JPS56168462A (en) Data transmitting system
ATE85732T1 (en) MOBILE RADIO RECEIVER.
ES2042513T3 (en) DIGITAL SIGNAL TRANSMISSION SYSTEM.
JPS57191579A (en) Ultrasonic transmitter and receiver

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee