FR2393710A1 - Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver - Google Patents

Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver

Info

Publication number
FR2393710A1
FR2393710A1 FR7717490A FR7717490A FR2393710A1 FR 2393710 A1 FR2393710 A1 FR 2393710A1 FR 7717490 A FR7717490 A FR 7717490A FR 7717490 A FR7717490 A FR 7717490A FR 2393710 A1 FR2393710 A1 FR 2393710A1
Authority
FR
France
Prior art keywords
track
upward
downward
conductors
receiver
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
FR7717490A
Other languages
French (fr)
Other versions
FR2393710B1 (en
Inventor
Pierre Pitard
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.)
SNCF Mobilites
Compagnie de Signaux et dEntreprises Electriques SA
Original Assignee
SNCF Mobilites
Compagnie de Signaux et dEntreprises Electriques SA
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 SNCF Mobilites, Compagnie de Signaux et dEntreprises Electriques SA filed Critical SNCF Mobilites
Priority to FR7717490A priority Critical patent/FR2393710A1/en
Priority to US05/912,765 priority patent/US4304377A/en
Priority to ZA00783211A priority patent/ZA783211B/en
Priority to LU79772A priority patent/LU79772A1/en
Priority to DE19782824927 priority patent/DE2824927A1/en
Priority to BE188391A priority patent/BE867901A/en
Priority to GB787826485A priority patent/GB2001466B/en
Priority to ES470580A priority patent/ES470580A1/en
Priority to IT68319/78A priority patent/IT1108590B/en
Priority to AU36901/78A priority patent/AU518686B2/en
Priority to NLAANVRAGE7806233,A priority patent/NL181916C/en
Publication of FR2393710A1 publication Critical patent/FR2393710A1/en
Application granted granted Critical
Publication of FR2393710B1 publication Critical patent/FR2393710B1/fr
Granted legal-status Critical Current

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)

Abstract

At the extremities of the joints are mechanisms which, on the downward track offer small impedance to the upward direction frequency and capacitive impedance to the downward direction frequency, whereas, on the upward track, the reverse is the case. The electric joint comprises two inductive loops situated at the upward and downward extremities of the joint. The inductive loop is a parallelogram, two sides being parallel to the track rails, and the loops are connected in series. The mechanisms are connected by either receptors or emitters of frequency relative to the associated track circuit. The receptors, activating a control mechanism of the principal track circuit, together with the axles, giving the shunt effect, produce progressive reestablishment of the amplitude of signals of the upward circuit, and progressive attenuation of the signals of the downward circuit.
FR7717490A 1977-06-08 1977-06-08 Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver Granted FR2393710A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR7717490A FR2393710A1 (en) 1977-06-08 1977-06-08 Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver
US05/912,765 US4304377A (en) 1977-06-08 1978-06-05 Electrical block separating joints for railway signaling systems
ZA00783211A ZA783211B (en) 1977-06-08 1978-06-05 Electrical block separating joints for railway signalling systems
LU79772A LU79772A1 (en) 1977-06-08 1978-06-06 IMPROVEMENT IN ELECTRICAL JOINTS FOR RAILWAY SIGNALING SYSTEMS
BE188391A BE867901A (en) 1977-06-08 1978-06-07 IMPROVEMENT IN ELECTRICAL JOINTS FOR RAILWAY SIGNALING SYSTEMS
GB787826485A GB2001466B (en) 1977-06-08 1978-06-07 Electrical block separating joints for railway signalling systems
DE19782824927 DE2824927A1 (en) 1977-06-08 1978-06-07 ELECTRICAL CIRCUIT FOR THE SEPARATION OF TWO ADDITIONAL TRACK CIRCUITS IN RAILWAY SIGNAL AND SAFETY SYSTEMS
ES470580A ES470580A1 (en) 1977-06-08 1978-06-07 Electrical block separating joints for railway signaling systems
IT68319/78A IT1108590B (en) 1977-06-08 1978-06-07 ELECTRIC JUNCTION FOR RAILWAY SIGNALING SYSTEMS
AU36901/78A AU518686B2 (en) 1977-06-08 1978-06-07 Electrical block separating joints for railway signaling systems
NLAANVRAGE7806233,A NL181916C (en) 1977-06-08 1978-06-08 ELECTRICAL SIGNALING SYSTEM FOR RAILWAYS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7717490A FR2393710A1 (en) 1977-06-08 1977-06-08 Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver

Publications (2)

Publication Number Publication Date
FR2393710A1 true FR2393710A1 (en) 1979-01-05
FR2393710B1 FR2393710B1 (en) 1980-10-03

Family

ID=9191822

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717490A Granted FR2393710A1 (en) 1977-06-08 1977-06-08 Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver

Country Status (3)

Country Link
BE (1) BE867901A (en)
FR (1) FR2393710A1 (en)
ZA (1) ZA783211B (en)

Also Published As

Publication number Publication date
ZA783211B (en) 1979-06-27
FR2393710B1 (en) 1980-10-03
BE867901A (en) 1978-10-02

Similar Documents

Publication Publication Date Title
BR8106035A (en) PERFECT IRON ROAD CIRCUIT
UA27697C2 (en) Continuously moving machine for compacting ballast coating of railroad track
ES470580A1 (en) Electrical block separating joints for railway signaling systems
FR2395177A2 (en) Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver
FR2393710A1 (en) Electric joints for railway signalling systems - use tracks as conductors with up and down line at different frequencies and uses axle shunt effect to change signal to receiver
ES473610A1 (en) Single beam reference system for railway surveying
ES362084A1 (en) High frequency track circuits for rail-roads interrelated at switches and crossovers
GB1170049A (en) Signal Transmission Circuit
GB1171991A (en) Highway Crossing Signal Control System
US1484049A (en) Electric high-frequency signaling apparatus
JPH077242Y2 (en) Train detector for multi-rail track
GB1451431A (en) Railway signalling apparatus and systems
GB1326885A (en) Railway signalling apparatus and systems
IT1111643B (en) HIGH FREQUENCY CIRCUIT SYSTEM WITHOUT JUNCTIONS TO TRANSMIT SIGNALS TO RAILWAY VEHICLES THROUGH THE RAILWAY RAILS
DK143585D0 (en) CIRCUIT DEVICE FOR MONITORING THE PRESENCE OF SKIN VEHICLES WITHIN SPECIFIC TRACKS
FR2378291A1 (en) Seismic geophysical exploration process - uses control signal having frequency, amplitude or phase variation in consecutive sections
GB1417048A (en) Electrical circuit for transmitting information between a vehicle travelling on a track and a control station connected to the circuit
ATE54882T1 (en) CIRCUIT ARRANGEMENT FOR MONITORING THE PRESENCE OF RAILWAY VEHICLES WITHIN SPECIFIC TRACK SECTIONS.
SU852693A1 (en) Device for monitoring the loss of shunt in rall vehicle
SU990572A1 (en) Method of breaking-down track circuits
SU1698114A1 (en) Device for measuring railway line parameters
IT8148032A1 (en) Selector of alternative signal of greater amplitude between two signals of different frequencies, in particular for the transmission of information on railway traffic
FR2385843A1 (en) Railway track frog point - consists of two side rails and two centre rails welded together at flanges and heads
JPS5372414A (en) Inductive radio coupler system
GB1404878A (en) Track circuits

Legal Events

Date Code Title Description
AM Act modifying the rights related to an application or a patent
CD Change of name or company name
TP Transmission of property