EP0404143B1 - Circuit pour surveiller des charges à courant alternatif dans des installations de chemin de fer - Google Patents

Circuit pour surveiller des charges à courant alternatif dans des installations de chemin de fer Download PDF

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Publication number
EP0404143B1
EP0404143B1 EP90111741A EP90111741A EP0404143B1 EP 0404143 B1 EP0404143 B1 EP 0404143B1 EP 90111741 A EP90111741 A EP 90111741A EP 90111741 A EP90111741 A EP 90111741A EP 0404143 B1 EP0404143 B1 EP 0404143B1
Authority
EP
European Patent Office
Prior art keywords
current
circuit
monitoring
circuit arrangement
during
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.)
Expired - Lifetime
Application number
EP90111741A
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German (de)
English (en)
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EP0404143A1 (fr
Inventor
Helmut Uebel
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
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Filing date
Publication date
Application filed by Alcatel SEL AG filed Critical Alcatel SEL AG
Publication of EP0404143A1 publication Critical patent/EP0404143A1/fr
Application granted granted Critical
Publication of EP0404143B1 publication Critical patent/EP0404143B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/10—Circuitry for light signals, e.g. for supervision, back-signalling

Definitions

  • the invention relates to a circuit arrangement according to the preamble of patent claim 1.
  • DE-OS 31 17 188 provides time-dependent components which, after the light signal current has been switched on, bring about increased magnetic excitation of the monitoring relay used as the monitoring element and for a certain time in this way reduce the response threshold of the monitoring relay.
  • the invention is based on the object of specifying a simple monitoring circuit which is independent of the line length required in the individual case.
  • the capacitive reactive current which has the mean value 0 within a half-wave of the supply voltage, does not contribute to the measurement.
  • An inductive reactive current component caused by the inductance of the cable lead and the lamp transformer is so small at the frequencies (50 Hz) used in railway safety systems that it can be neglected compared to the active current and the capacitive reactive current.
  • both active current half-waves can be evaluated.
  • the detection and averaging of the current is carried out separately for each half-wave due to the compensation of the reactive current component.
  • both active current half-waves contribute to the excitation of the monitoring relay.
  • a monitoring circuit ÜS is arranged in the signal box, which detects and evaluates the current I flowing to the lamp transformer.
  • the current I G measured at the location of the monitoring circuit is composed of an active current component I W and a reactive current component I B that is attributable to the capacitance of the feed cable.
  • This reactive current component continues to flow even after the lamp filament breaks and can thus simulate an intact signal lamp in the signal box if the total current I G is used for the evaluation.
  • the switch S remains open only during one of the half-waves of the supply voltage U, it is closed during the other half-wave and thus bridges the winding of the monitoring relay with low resistance. Since, as can be seen from FIG. 1a, the supply voltage and the active current component are in phase with one another, the switch can be Control synchronously with the supply voltage using a simple control circuit.
  • the DC relay has two windings G I and G II , which are bridged by separate switches S1 and S2.
  • the two switches are driven inversely to one another by the control circuit AS, so that the two active current half-waves influence different relay windings. Since the two oppositely wound relay windings are flowed through in opposite directions by the active current half-waves, both active current half-waves contribute in the same direction to the excitation of the monitoring relay.
  • a monitoring circuit shown in FIG. 4 uses two transistors T1, T2 instead of a diode bridge circuit, to which diodes D1, D2 are connected in parallel in the reverse direction.
  • the control by the control circuit AS takes place in parallel via current limiting resistors R1, R2.
  • the circuit shown in FIG. 4 has a lower voltage drop than the circuit shown in FIG. 3.
  • a circuit shown in FIG. 5 represents a particularly advantageous solution, which essentially corresponds to the circuit shown in FIG. 4, but uses MOS field effect transistors FT1, FT2 instead of bipolar transistors.
  • a current limiting resistor R3 and a Zener diode ZD are sufficient as the control circuit for limiting the controlling supply voltage.
  • the inverse diodes ID1, ID2 integrated in the MOS field effect transistors can be used instead of the parallel diodes D1 and D2 in FIG. 4, the inverse diodes ID1, ID2 integrated in the MOS field effect transistors can be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Claims (7)

  1. Circuit de surveillance de récepteurs à courant alternatif, en particulier de lampes de signalisation (L), alimentés par l'intermédiaire de conducteurs d'alimentation handicapés d'une capacité, dans des installations de signalisation de chemins de fer, par traitement du courant passant dans le conducteur d'alimentation, au moyen d'au moins un élément de surveillance (G) qui saisit le passage, en dessous d'une valeur de seuil, du courant dans la ligne du courant du récepteur, circuit dans lequel l'élément de surveillance (G) réagit à la valeur moyenne, dans le temps, du courant qui le parcourt, circuit caractérisé par le fait qu'est prévu un dispositif de commutation S qui est piloté en synchronisme avec la phase de la tension alternative d'alimentation (U) et qui ne met l'élément de surveillance (G) dans le circuit d'alimentation du récepteur que pendant les demi-ondes positives ou que pendant les demi-ondes négatives de la tension d'alimentation ou bien qui reçoit un signal proportionnel au courant passant dans le récepteur.
  2. Circuit selon la revendication 1, caractérisé par le fait que l'élément de surveillance est un relais à courant continu (G) dont les contacts ferment au moins une ligne de courant de surveillance et dont le bobinage d'excitation, monté dans le circuit d'alimentation du récepteur, est shunté, avec une faible résistance ohmique, par le dispositif de commutation (S) monté en parallèle avec lui, pendant les demi-ondes positives ou pendant les demi-ondes négatives de la tension d'alimentation.
  3. Circuit selon la revendication 1, caractérisé par le fait que comme éléments de surveillance on emploie deux bobinages (GI, GII), parcourus en sens inverse, d'un relais à courant continu et, comme dispositif de commutation (S), deux commutateurs (S1, S2) actionnés, en sens inverse l'un de l'autre, par un circuit de pilotage (AS), par le fait que les deux bobinages du relais à courant continu sont montés en série dans le circuit d'alimentation du récepteur et par le fait que chaque bobinage (GI, GII) est respectivement shunté avec une faible résistance ohmique, par l'un des commutateurs pendant, respectivement, les demi-ondes positives ou pendant les demi-ondes négatives de la tension d'alimentation.
  4. Circuit selon la revendication 2, caractérisé par le fait que le dispositif de commutation (S) est un transistor (T) dont le circuit de conduction est monté dans une branche transversale d'un circuit en pont redresseur (BG) qui shunte le bobinage du relais à courant continu (G) et dont le circuit de commande est sollicité par un circuit de pilotage (AS).
  5. Circuit selon la revendication 2, caractérisé par le fait que le dispositif de commutation (S) est formé par deux transistors (T1, T2) montés en série en sens inverse, dont les circuits de conduction sont, chacun, shuntés, dans le sens de blocage, par une diode (D1, D2) et dont les circuits de commande sont sollicités par le même circuit de commande, par l'intermédiaire de prérésistances (R1, R2), par un circuit de pilotage (AS).
  6. Circuit selon la revendication 5, caractérisé par le fait que les transistors montés en série en sens inverse sont des transistors à effet de champ MOS (FT1, FT2) avec diodes intégrées, montées en sens inverse, et par le fait qu'au lieu des prérésistances (R1, R2), le circuit de pilotage (AS) comprend une résistance (R3) de limitation du courant et une diode Z, étant précisé que la tension alternative d'alimentation (U), limitée par le diode Z (ZD) arrive aux circuits grille-source des transistors à effet de champ MOS.
  7. Circuit selon la revendication 1, caractérisé par le fait que le dispositif de commutation (S) est monté en série avec l'élément de surveillance (G) et que le circuit de série ainsi créé shunte une résistance (R4) qui est reliée à un bobinage secondaire d'un transformateur de surveillance (üT) dont le bobinage primaire est situé sur la ligne de courant du récepteur et qui agit comme transformateur de courant.
EP90111741A 1989-06-22 1990-06-21 Circuit pour surveiller des charges à courant alternatif dans des installations de chemin de fer Expired - Lifetime EP0404143B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3920430A DE3920430A1 (de) 1989-06-22 1989-06-22 Schaltungsanordnung zur ueberwachung von wechselstromverbrauchern in eisenbahnsignalanlagen
DE3920430 1989-06-22

Publications (2)

Publication Number Publication Date
EP0404143A1 EP0404143A1 (fr) 1990-12-27
EP0404143B1 true EP0404143B1 (fr) 1994-09-14

Family

ID=6383315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111741A Expired - Lifetime EP0404143B1 (fr) 1989-06-22 1990-06-21 Circuit pour surveiller des charges à courant alternatif dans des installations de chemin de fer

Country Status (5)

Country Link
EP (1) EP0404143B1 (fr)
AT (1) ATE111405T1 (fr)
DE (2) DE3920430A1 (fr)
DK (1) DK0404143T3 (fr)
ES (1) ES2063863T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013926U1 (de) 2010-10-06 2012-01-11 Bag Engineering Gmbh Elektronisches Vorschaltgerät und Beleuchtungsgerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110990A1 (de) * 1991-04-05 1992-10-08 Standard Elektrik Lorenz Ag Einrichtung zur pruefung von signallampen in eisenbahnanlagen
EP1524167B1 (fr) * 2003-10-14 2010-11-03 Siemens Schweiz AG Procédé et circuit pour créer un signal sûr de confirmation pour des applications ferroviaires

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995262A (en) * 1975-06-25 1976-11-30 Welwyn Electric Limited Electric lamp failure indicator circuit
DE3140559A1 (de) * 1981-10-13 1983-04-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum signaltechnisch sicheren betrieb von signallampen
DE3338490A1 (de) * 1983-10-22 1985-05-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur ueberwachung des betriebszustandes von in der aussenanlage eines stellwerks eingesetzten wechselstromverbrauchern
DE3813538A1 (de) * 1988-04-22 1989-11-02 Standard Elektrik Lorenz Ag Schaltungsanordnung zum ueberwachten betrieb zweier wechselstromverbraucher ueber eine gemeinsame speiseleitung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013926U1 (de) 2010-10-06 2012-01-11 Bag Engineering Gmbh Elektronisches Vorschaltgerät und Beleuchtungsgerät
EP2448376A2 (fr) 2010-10-06 2012-05-02 BAG engineering GmbH Appareil de montage électronique et appareil d'éclairage

Also Published As

Publication number Publication date
EP0404143A1 (fr) 1990-12-27
ES2063863T3 (es) 1995-01-16
DE59007106D1 (de) 1994-10-20
DK0404143T3 (da) 1994-10-17
ATE111405T1 (de) 1994-09-15
DE3920430A1 (de) 1991-01-03

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