CA2057316A1 - Master-satellite railway track circuit - Google Patents

Master-satellite railway track circuit

Info

Publication number
CA2057316A1
CA2057316A1 CA2057316A CA2057316A CA2057316A1 CA 2057316 A1 CA2057316 A1 CA 2057316A1 CA 2057316 A CA2057316 A CA 2057316A CA 2057316 A CA2057316 A CA 2057316A CA 2057316 A1 CA2057316 A1 CA 2057316A1
Authority
CA
Canada
Prior art keywords
master
satellite
track circuit
railway track
track
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2057316A
Other languages
French (fr)
Other versions
CA2057316C (en
Inventor
Raymond C. Franke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
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 Union Switch and Signal Inc filed Critical Union Switch and Signal Inc
Publication of CA2057316A1 publication Critical patent/CA2057316A1/en
Application granted granted Critical
Publication of CA2057316C publication Critical patent/CA2057316C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/044—Broken rails
    • 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 vehicle train, e.g. pedals
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/188—Use of coded current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/08—Control, warning, or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only
    • B61L23/14—Control, warning, or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only automatically operated
    • B61L23/16—Track circuits specially adapted for section blocking
    • B61L23/168—Track circuits specially adapted for section blocking using coded current

Abstract

A railway track circuit for protection of an extended track block having a master unit at one end of the block and a satellite unit at the other. Each master and satellite unit having transmitting and receiving capabilities. The output impedance of the transmitters or of the receivers is of a low impedance as connected to the rails. Through an alternative transmit and receive sequence a link-up between the master and satellite units provides detection of broken rail and/or shunts from each end of the track circuit. The use of low impedance and detection at both ends of the section permit extended length track circuits.
CA002057316A 1991-03-27 1991-12-09 Master-satellite railway track circuit Expired - Fee Related CA2057316C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/676,093 US5145131A (en) 1991-03-27 1991-03-27 Master-Satellite railway track circuit
US676,093 1991-03-27

Publications (2)

Publication Number Publication Date
CA2057316A1 true CA2057316A1 (en) 1992-09-28
CA2057316C CA2057316C (en) 1996-05-14

Family

ID=24713196

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002057316A Expired - Fee Related CA2057316C (en) 1991-03-27 1991-12-09 Master-satellite railway track circuit

Country Status (4)

Country Link
US (1) US5145131A (en)
AU (1) AU652975B2 (en)
CA (1) CA2057316C (en)
MX (1) MX9200736A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9122438D0 (en) * 1991-10-23 1991-12-04 Westinghouse Brake & Signal Railway track circuits
US5330136A (en) * 1992-09-25 1994-07-19 Union Switch & Signal Inc. Railway coded track circuit apparatus and method utilizing fiber optic sensing
CA2099204C (en) * 1992-10-08 1997-01-07 James P. Brown Coded railway track circuit having reduced power standby mode capability
FR2708641B1 (en) * 1993-07-30 1995-10-20 Gtm Btp Device for mooring a boat at a docking point.
US5459663A (en) * 1993-12-10 1995-10-17 Union Switch & Signal Inc. Cab signal apparatus and method
US5529267A (en) * 1995-07-21 1996-06-25 Union Switch & Signal Inc. Railway structure hazard predictor
US5752677A (en) * 1996-11-12 1998-05-19 Richley; Edward Anthony Block occupancy detector for model railroads
US6102340A (en) * 1997-02-07 2000-08-15 Ge-Harris Railway Electronics, Llc Broken rail detection system and method
US5769364A (en) * 1997-05-14 1998-06-23 Harmon Industries, Inc. Coded track circuit with diagnostic capability
US6845953B2 (en) 2002-10-10 2005-01-25 Quantum Engineering, Inc. Method and system for checking track integrity
US7142982B2 (en) 2004-09-13 2006-11-28 Quantum Engineering, Inc. System and method for determining relative differential positioning system measurement solutions
US7722134B2 (en) * 2004-10-12 2010-05-25 Invensys Rail Corporation Failsafe electronic braking system for trains
DE102005036498A1 (en) * 2005-07-28 2007-02-01 Siemens Ag Railway signaling system controlling data encoding method, involves dividing transmission cycle time into time intervals, assigning data points to related intervals, and transmitting encoded data points as electrical signal pulses
US7268565B2 (en) * 2005-12-08 2007-09-11 General Electric Company System and method for detecting rail break/vehicle
US8060264B2 (en) * 2007-04-13 2011-11-15 Salco Products Inc. System for monitoring railroad cars
US9254852B2 (en) * 2008-01-08 2016-02-09 Richard Lee Lawson Methods and system of automating track circuit calibration
DE102009041782A1 (en) * 2009-09-15 2011-03-24 Siemens Aktiengesellschaft Device for detecting the occupancy or free status of a track section
US9150228B2 (en) * 2012-07-13 2015-10-06 Grappone Technologies Inc. Track circuit providing enhanced broken rail detection
US9391820B2 (en) 2012-11-01 2016-07-12 Alstom Transport Technologies Railway code generation and signaling system and method
MX2015011682A (en) 2013-05-30 2015-12-07 Wabtec Holding Corp Broken rail detection system for communications-based train control.
US9701326B2 (en) 2014-09-12 2017-07-11 Westinghouse Air Brake Technologies Corporation Broken rail detection system for railway systems
US9689911B2 (en) * 2015-02-26 2017-06-27 Alstom Transport Technologies System and method employing joint bypass circuit to test insulated joints in track systems
DE212016000212U1 (en) * 2015-10-20 2018-05-24 Analog Devices Global Unlimited Company System for power transmission and duplex communication via a single isolation device
US10202132B2 (en) * 2017-03-17 2019-02-12 Alstom Transport Technologies Monitoring device for monitoring a railway track, associated method and monitoring system for monitoring a railway track
JOP20190123A1 (en) * 2017-06-14 2019-05-28 Grow Solutions Tech Ll Systems and methods for communicating via a track with an industrial cart
US10778271B1 (en) * 2019-07-09 2020-09-15 Alstom Transport Technologies System and method for analyzing signals travelling along track circuits of railway lines, and related portable signal analyzing device
US11702119B2 (en) * 2021-05-10 2023-07-18 Alstom Transport Technologies Method for determining a status of a track section of a railroad; associated apparatus and non-transitory computer readable medium
WO2023079328A1 (en) * 2021-11-02 2023-05-11 Alstom Holdings Receiverless track circuit for a railway line

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246141A (en) * 1961-12-12 1966-04-12 Westinghouse Air Brake Co Coded track circuit apparatus
US3359416A (en) * 1965-03-29 1967-12-19 Gen Signal Corp Continuous rail track circuits
US3696243A (en) * 1970-08-26 1972-10-03 Marquardt Ind Products Co Broken rail detector
US3753228A (en) * 1971-12-29 1973-08-14 Westinghouse Air Brake Co Synchronizing arrangement for digital data transmission systems
US3821544A (en) * 1972-07-24 1974-06-28 Westinghouse Electric Corp Apparatus for sensing positions of vehicle along a track using voltage sensing in current track circuits
US4415134A (en) * 1980-07-11 1983-11-15 Safetran Systems Corporation Hall effect track circuit receiving element
US4320881A (en) * 1980-10-03 1982-03-23 American Standard Inc. Fail-safe decoder for digital track circuits
US4619425A (en) * 1981-07-17 1986-10-28 American Standard Inc. Pulse code system for railroad track circuits
US4498650A (en) * 1982-03-10 1985-02-12 General Signal Corporation Microprocessor based track circuit for occupancy detection and bidirectional code communication
US4723739A (en) * 1985-07-16 1988-02-09 American Standard Inc. Synchronous rectification track circuit
US4728063A (en) * 1986-08-07 1988-03-01 General Signal Corp. Railway signalling system especially for broken rail detection
US4886226A (en) * 1988-06-23 1989-12-12 General Signal Corporation Broken rail and/or broken rail joint bar detection

Also Published As

Publication number Publication date
AU652975B2 (en) 1994-09-15
US5145131A (en) 1992-09-08
AU8899891A (en) 1992-10-01
MX9200736A (en) 1992-09-01
CA2057316C (en) 1996-05-14

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Legal Events

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