IL42483A - Apparatus for sensing positions of a vehicle along a trac - Google Patents

Apparatus for sensing positions of a vehicle along a trac

Info

Publication number
IL42483A
IL42483A IL42483A IL4248373A IL42483A IL 42483 A IL42483 A IL 42483A IL 42483 A IL42483 A IL 42483A IL 4248373 A IL4248373 A IL 4248373A IL 42483 A IL42483 A IL 42483A
Authority
IL
Israel
Prior art keywords
signal
rails
vehicle
voltage
responsive means
Prior art date
Application number
IL42483A
Other versions
IL42483A0 (en
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of IL42483A0 publication Critical patent/IL42483A0/en
Publication of IL42483A publication Critical patent/IL42483A/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
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (3)

1. A system for determining the position of a vehicle within one of a plurality of signal conductive signalling blocks comprised of a conductive track including a pair of conductive continuous rails, the vehicle having conductive axles, the system comprising: a plurality of conductors, with one such conductor being connected between said rails at each of a plurality of predetermined locations, each of said conductors providing a signal conductive path between said rails, with a track section between and including two such conductors forming one of said signalling blocks; at least one signal voltage responsive means connected between said rails at a predetermined location in a given one of said signalling blocks for sensing signal voltage between said rails at said predetermined location at a given level in the absence of a vehicle in said one signalling block and for sensing a decrease in signal voltage to a minimum voltage level as said vehicle approaches said predetermined location, with said one signal-voltage responsive means having a high Impedance relative to the impedance of said rails such that essentially all of said signal current flows through said rails and a negligible amount of said signal current flows through said one signal voltage responsive means, with said decrease in signal voltage to a minimum voltage level as said vehicle approaches said predetermined location being caused by the low impedance of the axles of said vehicle reducing the impedance between said rails at said predetermined location.
2. The system claimed in claim 1, wherein said signal-voltage responsive means includes a transformer having a primary winding connected between said rails, and also having a secondary winding.
3. The system claimed in claim 2 , wherein said signal-voltage responsive means further includes: a filter having an input connected to the secondary winding of said transformer, and also having an output; and a level detector having an input connected to the output of said filter, and also having an output at which an output signal is provided in response to a signal of at least a given value being applied to said input of the level detector. For the Applicants INHOLD COHN AND PARTNERS
IL42483A 1972-07-24 1973-06-12 Apparatus for sensing positions of a vehicle along a trac IL42483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00274696A US3821544A (en) 1972-07-24 1972-07-24 Apparatus for sensing positions of vehicle along a track using voltage sensing in current track circuits

Publications (2)

Publication Number Publication Date
IL42483A0 IL42483A0 (en) 1973-08-29
IL42483A true IL42483A (en) 1976-04-30

Family

ID=23049246

Family Applications (1)

Application Number Title Priority Date Filing Date
IL42483A IL42483A (en) 1972-07-24 1973-06-12 Apparatus for sensing positions of a vehicle along a trac

Country Status (10)

Country Link
US (1) US3821544A (en)
JP (2) JPS4957509A (en)
BE (1) BE802658A (en)
BR (1) BR7305351D0 (en)
CA (1) CA965512A (en)
CH (1) CH577405A5 (en)
ES (1) ES417181A1 (en)
FR (1) FR2193733B1 (en)
IL (1) IL42483A (en)
IT (1) IT997382B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891167A (en) * 1974-05-31 1975-06-24 Westinghouse Electric Corp Vehicle presence detection in a vehicle control system
US3949959A (en) * 1974-10-17 1976-04-13 Westinghouse Electric Corporation Antenna apparatus for vehicle track rail signals
US3986691A (en) * 1975-05-30 1976-10-19 Westinghouse Air Brake Company Phase selective track circuit apparatus
JPS5654125Y2 (en) * 1976-11-22 1981-12-17
JPS5373604U (en) * 1976-11-22 1978-06-20
JPS55101620U (en) * 1979-01-11 1980-07-15
FR2490569A1 (en) * 1980-09-22 1982-03-26 Signaux Entr Electriques PERFECTION RAILWAY TRACK CIRCUIT
FR2498546A1 (en) * 1981-01-29 1982-07-30 Jeumont Schneider METHOD FOR CONTROLLING A RAILWAY VEHICLE IN AUTOMATIC DRIVING
US4387870A (en) * 1981-04-29 1983-06-14 Westinghouse Electric Corp. Transit vehicle shunt determination
US4471929A (en) * 1982-03-01 1984-09-18 Westinghouse Electric Corp. Transit vehicle signal apparatus and method
US4665831A (en) * 1984-03-09 1987-05-19 The Furukawa Electric Co., Ltd. Electric power supplying system for a continuous transit system by magnet (CTM)
EP0272343B1 (en) * 1986-12-24 1989-10-18 Scheidt & Bachmann Gmbh Device for the surveillance of the presence of rail vehicles within specified track sections
US5145131A (en) * 1991-03-27 1992-09-08 Union Switch & Signal Inc. Master-Satellite railway track circuit
GB9122438D0 (en) * 1991-10-23 1991-12-04 Westinghouse Brake & Signal Railway track circuits
US5417388A (en) * 1993-07-15 1995-05-23 Stillwell; William R. Train detection circuit
US5459663A (en) * 1993-12-10 1995-10-17 Union Switch & Signal Inc. Cab signal apparatus and method
DE4423785C1 (en) * 1994-06-30 1995-09-14 Siemens Ag Railway rolling stock position discrimination method
US5746399A (en) * 1995-07-21 1998-05-05 Union Switch & Signal Inc. Car space measurement apparatus
US6220552B1 (en) * 1999-07-15 2001-04-24 Anthony John Ireland Model railroad detection equipment
US20080154449A1 (en) * 2006-12-20 2008-06-26 John Edward Borntraeger System, Method, and Computer-Readable Media For Monitoring Motion of Railcars In A Railroad Yard
US20080154539A1 (en) * 2006-12-20 2008-06-26 John Edward Borntraeger System and method for measuring the wheelbase of a railcar
GB2463700A (en) * 2008-09-23 2010-03-24 Robin Weber A signalling system to control the distance between two vehicles on the same track
EP2338762B1 (en) * 2009-12-21 2012-09-12 Alstom Ferroviaria S.P.A. Track circuit working in two different frequency ranges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1330324A (en) * 1962-05-11 1963-06-21 Forges Ateliers Const Electr Improvements to continuous announcements at railway crossings
US3526378A (en) * 1967-08-23 1970-09-01 Westinghouse Electric Corp Signaling system for determining the presence of a train vehicle

Also Published As

Publication number Publication date
JPS53154505U (en) 1978-12-05
JPS5439763Y2 (en) 1979-11-24
FR2193733B1 (en) 1979-01-26
IT997382B (en) 1975-12-30
IL42483A0 (en) 1973-08-29
JPS4957509A (en) 1974-06-04
CH577405A5 (en) 1976-07-15
CA965512A (en) 1975-04-01
BR7305351D0 (en) 1974-08-22
FR2193733A1 (en) 1974-02-22
ES417181A1 (en) 1976-06-01
BE802658A (en) 1974-01-23
US3821544A (en) 1974-06-28

Similar Documents

Publication Publication Date Title
IL42483A (en) Apparatus for sensing positions of a vehicle along a trac
IE39739B1 (en) Electrodaithermy apparatus
GB1242343A (en) Improvements relating to systems for transmitting information between a trackway and a moving vehicle
HU178069B (en) Method for forming swith and ahunt sections of tracks and the switch and shunt sections formed by the method
US1958631A (en) Speed responsive apparatus
US3333096A (en) Railway track circuit apparatus
JPS52129663A (en) Control circuit for tandem continuous rolling machine
AU477167B2 (en) Direction indicator control circuits for road vehicles
GB1171991A (en) Highway Crossing Signal Control System
ES295765A1 (en) Highway crossing protection system
US3902689A (en) Arrangement for measuring the distance between two successive objects
US3576991A (en) Track circuit pickup unit
FR2418441A1 (en) Detector for movement of ground supporting rail tracks and roads - uses calibrated rupture element connected to LV circuit, and inclination sensor
DE376949C (en) Electric train cover system
US2135496A (en) Signaling system for railroads
SU852693A1 (en) Device for monitoring the loss of shunt in rall vehicle
JPS5762420A (en) Controller for vehicle operation
US1788880A (en) Train-control system
JPS56157505A (en) Control system for running on branching path of unattended induced car
SU958189A1 (en) Apparatus for counting rail vehicle axles
JPS5445017A (en) Mergning controller
US1779672A (en) Railway-signaling system
FR2270135A1 (en) Wheeled vehicle moving along guide rail - has stirrup with proximity detectors moving along the rail
GB748807A (en) Improvements in or relating to signal operating systems controlled by the speed of moving vehicles, particularly trains
JPS57128861A (en) Position detector for mobile body