EP0507186B1 - Device for testing signal lamps in railway systems - Google Patents
Device for testing signal lamps in railway systems Download PDFInfo
- Publication number
- EP0507186B1 EP0507186B1 EP92105023A EP92105023A EP0507186B1 EP 0507186 B1 EP0507186 B1 EP 0507186B1 EP 92105023 A EP92105023 A EP 92105023A EP 92105023 A EP92105023 A EP 92105023A EP 0507186 B1 EP0507186 B1 EP 0507186B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring resistor
- voltage
- arrangement
- lamp
- measuring
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1881—Wiring diagrams for power supply, control or testing
Definitions
- the invention relates to a device according to the preamble of claim 1.
- a device is e.g. known from "Eisenbahntechnischetechnik” 1959, volume 3, pages 25 to 26.
- the supply current flowing into the cable feed line is monitored there with the aid of a monitoring relay. If the supply current falls below a predetermined threshold value, which is dependent on the fallback excitation of the monitoring relay, the monitoring relay drops out and signals the failure of the signal lamp.
- the invention is based on the object of specifying a device which allows cold thread testing of signal lamps from the signal box without monitoring switching means arranged in the external system.
- the device according to the invention makes use of the fact that the inductive resistance of the primary winding of the lamp transformer changes as a function of the ohmic signal lamp resistance effective at its secondary winding.
- the primary winding To assess the resistance of the primary winding, it is connected in series with a measuring resistor into a measuring circuit at certain time intervals.
- the voltage drop across the measuring resistor or the current flowing through the measuring resistor are evaluated by a simple circuit.
- the evaluation circuit and a measuring voltage source In addition to the measuring resistor, the evaluation circuit and a measuring voltage source, all of which are located in the signal box, no additional circuit parts are required, especially no additional cable wires for cold thread testing.
- the measuring current is so small that a lighting up of the signal lamp due to the measuring current can be reliably ruled out.
- Embodiments of the device according to the invention describe subclaims 2 to 6.
- a capacitive coupling of the evaluation circuit to the measuring resistor and the electrically isolated coupling via an optocoupler provide for claims 3 and 4.
- patent claim 5 finally, enables, with little additional effort, a simultaneous function monitoring of the circuit parts used for cold thread testing, while in claim 6 the evaluation of the parameter which provides information about the state of the signal lamp is described by a possibly already existing computer used for other purposes .
- a signal lamp L is operated in a known manner via a lamp transformer LT.
- the lamp and lamp transformer are located in the outer area A of a signal box ST.
- the primary winding of the lamp transformer is connected to the interlocking device via a cable feed line up to 6.5 km long, which contains cable cores K1 and K2.
- a measuring voltage source QM here a simple one, e.g. mains-powered isolating transformer, a connecting device AN schematically represented by a changeover contact of a relay, a voltage converter W and an evaluation circuit AS are provided.
- the AC voltage network that feeds the signal lamp during the operating phases can also be used as the measurement voltage source. This saves a special measuring voltage transformer.
- the connecting device alternately connects a first terminal of the measuring voltage source to one of the two cable wires K1 or K2.
- the second terminal of the measuring voltage source is permanently connected to the cable core K2 via the primary winding of the voltage converter.
- a measuring current therefore constantly flows through the primary winding of the voltage converter, which, however, assumes different values, depending on which cable wire the first terminal of the measuring voltage source is connected to. If the measuring voltage is connected to the cable core K1, the measuring current (with the signal lamp switched off, i.e. the signal lamp supply is disconnected) flows via the cable core K1, the primary winding of the lamp transformer LT and the cable core K2 into the primary winding of the voltage converter W. If the measuring voltage is with the cable core K2 connected, it lies directly on the primary winding of the voltage converter and a measuring current dependent on the inductive resistance of the voltage converter is established.
- the measuring current flowing through the primary winding of the lamp transformer must not be able to rise so high that the signal lamp is illuminated. In trouble-free operation, this is ensured by the high input impedance of the primary winding of the voltage converter or a comparable inductive measuring resistor. In order to ensure that the measuring current does not reach too high values, even if the measuring resistor or the evaluation device is short-circuited, it can also be e.g. be limited by appropriate design of the transformer forming the measuring voltage source.
- the voltage induced in the secondary winding of the voltage converter is measured, only a slight change as a function of the clock of the connecting device is found when the signal lamp is intact.
- the resistance of the cable wires and the resistance of the lamp transformer loaded by the signal lamp are small compared to the inductive resistance of the voltage converter.
- the lamp thread is interrupted, the secondary load on the lamp transformer is eliminated and its primary winding assumes a high inductive resistance.
- the primary windings of the lamp transformer and the voltage converter then form an inductive voltage divider and the voltage drop across the primary winding of the voltage converter is reduced to approximately half of the directly measured measurement voltage.
- the evaluation circuit now detects an alternating voltage on the secondary side of the voltage converter, the amplitude of which doubles or halves in time with the switching device. This change in amplitude can now be compared with a predetermined value, which it surely exceeds if the filament breaks. The submission of a fault report can be made dependent on this.
- the device according to FIG. 2 differs from that according to FIG. 1 in that the two cable cores K1 and K2 are connected to measuring voltages of different phase positions.
- the transformer (measuring voltage source QM) supplying the measuring voltages is provided on the secondary side with a center tap which is connected to the reference potential (here ground potential).
- the measuring voltage transformer contains a second secondary winding for obtaining a comparison AC voltage.
- the evaluation circuit is capacitively coupled via a capacitor C to an inductive measuring resistor RM used instead of the voltage converter.
- the latter behaves like the primary winding of the voltage converter used in the above exemplary embodiment and could also be replaced here by one.
- the evaluation circuit AS here contains a rectifier GL, a downstream low-pass filter TP and a threshold switch SW.
- a phase comparison circuit PH and an output gate UG are available.
- the AC voltage tapped off at the measuring resistor RM reaches the input of the rectifier via the capacitor C, which rectifies it and supplies it to the low-pass filter.
- the low-pass filter is dimensioned in such a way that it blocks the AC voltage frequency, but on the other hand allows voltage changes that occur at the slower frequency of the connecting device to pass through. These are compared, for example after rectification again, in the downstream threshold switch with a predetermined threshold voltage UR.
- the output signal is not used directly for fault reporting, but is previously conjunctively linked in the output-side AND gate UG with the output signal of the phase comparison circuit PH.
- phase comparison circuit to which the voltage tapped at the measuring resistor is also fed, compares the phase position of this voltage with the phase position of the comparison AC voltage obtained at the measuring voltage transformer.
- Phase-sensitive rectification can e.g. an AC voltage signal can be obtained with the frequency of the switching device, which, as described above in connection with the testing of the amplitude of the measured voltage, can be rectified and compared with the predetermined reference voltage UR supplied to the phase comparison circuit.
- the output of the AND gate only delivers a signal indicating the intactness of the signal lamp thread to an output line AL if both the voltage changes at the measuring resistor which are characteristic of the failure of the lamp thread fail and the phase comparison circuit provides an output signal which regularly changes the phase position of the Measuring resistance of the falling voltage.
- a failure of the connecting device e.g., which would otherwise not be noticed, is thus recognized by the absence of the phase change.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Die Erfindung betrifft eine Einrichtung gemäß dem Oberbegriff des Patentanspruchs 1. Eine solche Einrichtung ist z.B. aus "Eisenbahntechnische Praxis" 1959, Heft 3, Seiten 25 bis 26 bekannt. Mit Hilfe eines Überwacherrelais wird dort der in die Kabelzuleitung fließende Speisestrom überwacht. Sinkt der Speisestrom unter einen vorgegebenen, von der Rückfallerregung des Überwacherrelais abhängigen Schwellenwert, so fällt das Überwacherrelais ab und meldet den Ausfall der Signallampe.The invention relates to a device according to the preamble of
Es sind eine ganze Reihe weiterer Schaltungen bekannt, die diese bekannte Einrichtung, vor allem hinsichtlich ihrer Brauchbarkeit zusammen mit langen Kabelzuleitungen, verbessern.A whole series of further circuits are known which improve this known device, particularly with regard to its usability together with long cable feed lines.
Alle diese bekannten Einrichtungen überwachen den Speisestrom und setzen deshalb den Betrieb der Signallampe voraus. Ist die Lampe dunkel geschaltet, so kann sie mit den o.g. Einrichtungen nicht überwacht werden. Ein während einer Betriebspause eintretender Ausfall wird erst bemerkt, wenn die Lampe in Betrieb genommen werden soll und dann ihren Dienst versagt.All these known devices monitor the feed current and therefore require the operation of the signal lamp. If the lamp is switched off, it cannot be monitored with the above devices. A failure that occurs during a break in operation is only noticed when the lamp is to be put into operation and then its service fails.
Soll die Funktionsfähigkeit einer Signallampe außerhalb der Betriebsphasen geprüft werden, so bedarf es hierzu einer Kaltfadenüberwachung, wie sie z.B. aus der DE 34 19 121 C2, Anspruch 3 und Spalte 4, Zeilen 5 bis 9 bekannt ist. Eine solche Kaltfadenüberwachung erfolgt mittels besonderer, auf die Sekundärseite des Lampentransformators führender Überwachungsstromkreise und bedingt einen hohen zusätzlichen Schaltungsaufwand.If the functionality of a signal lamp is to be checked outside of the operating phases, this requires cold thread monitoring, as it is e.g. from DE 34 19 121 C2, claim 3 and column 4, lines 5 to 9 is known. Such cold filament monitoring is carried out by means of special monitoring circuits leading to the secondary side of the lamp transformer and requires a high level of additional circuitry.
Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung anzugeben, die eine Kaltfadenprüfung von Signallampen vom Stellwerk aus, ohne in der Außenanlage angeordnete Überwachungsschaltmittel erlaubt.The invention is based on the object of specifying a device which allows cold thread testing of signal lamps from the signal box without monitoring switching means arranged in the external system.
Diese Aufgabe wird durch die im Patentanspruch 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in
Die Einrichtung nach der Erfindung nutzt die Tatsache, daß sich der induktive Widerstand der Primärwicklung des Lampentransformators in Abhängigkeit des an dessen Sekundärwicklung wirksamen ohmschen Signallampenwiderstandes ändert.The device according to the invention makes use of the fact that the inductive resistance of the primary winding of the lamp transformer changes as a function of the ohmic signal lamp resistance effective at its secondary winding.
Zur Beurteilung des Widerstandes der Primärwicklung wird diese in bestimmten Zeitabständen, in Reihe mit einem Meßwiderstand, in einen Meßstromkreis geschaltet. Die am Meßwiderstand abfallende Spannung oder der durch den Meßwiderstand fließende Strom werden durch eine einfache Schaltung ausgewertet. Außer dem Meßwiderstand, der Auswerteschaltung und einer Meßspannungsquelle, die sich alle im Stellwerk befinden, werden keine zusätzlichen Schaltungsteile, vor allem keine zusätzlichen Kabeladern für die Kaltfadenprüfung benötigt. Der Meßstrom ist dabei so klein, daß ein Aufleuchten der Signallampe infolge des Meßstromes sicher ausgeschlossen werden kann.To assess the resistance of the primary winding, it is connected in series with a measuring resistor into a measuring circuit at certain time intervals. The voltage drop across the measuring resistor or the current flowing through the measuring resistor are evaluated by a simple circuit. In addition to the measuring resistor, the evaluation circuit and a measuring voltage source, all of which are located in the signal box, no additional circuit parts are required, especially no additional cable wires for cold thread testing. The measuring current is so small that a lighting up of the signal lamp due to the measuring current can be reliably ruled out.
Ausgestaltungen der Einrichtung nach der Erfindung beschreiben die Unteransprüche 2 bis 6.Embodiments of the device according to the invention describe subclaims 2 to 6.
So ist die Verwendung eines Spannungswandlers als Meßwiderstand und gleichzeitiges Potentialtrennmittel zwischen Signalstromkeis und Auswerteschaltung Gegenstand des Patentanspruchs 2.The use of a voltage converter as a measuring resistor and at the same time potential isolation means between the signal current circuit and the evaluation circuit is the subject of claim 2.
Eine kapazitive Ankopplung der Auswerteschaltung an den Meßwiderstand und die potentialgetrennte Ankopplung über einen Optokoppler sehen die Patentansprüche 3 und 4 vor.A capacitive coupling of the evaluation circuit to the measuring resistor and the electrically isolated coupling via an optocoupler provide for claims 3 and 4.
Der Gegenstand des Patentanspruchs 5, schließlich, ermöglicht mit wenig zusätzlichem Aufwand eine gleichzeitige Funktionsüberwachung der zur Kaltfadenprüfung eingesetzten Schaltungsteile, während in Anspruch 6 die Auswertung der über den Zustand der Signallampe Aufschluß gebenden Meßgröße durch einen möglicherweise bereits vorhandenen und für andere Zwecke genutzten Rechner beschrieben ist.The subject matter of patent claim 5, finally, enables, with little additional effort, a simultaneous function monitoring of the circuit parts used for cold thread testing, while in claim 6 the evaluation of the parameter which provides information about the state of the signal lamp is described by a possibly already existing computer used for other purposes .
Anhand von zwei Figuren sollen nun Ausführungsbeispiele der Einrichtung nach der Erfindung eingehend beschrieben und ihre Funktion erklärt werden.
- Fig. 1
- zeigt ein Blockschaltbild einer einfachen Einrichtung nach der Erfindung,
- Fig. 2
- zeigt ein Blockschaltbild einer Einrichtung nach der Erfindung mit Funktionsüberwachung.
- Fig. 1
- shows a block diagram of a simple device according to the invention,
- Fig. 2
- shows a block diagram of a device according to the invention with function monitoring.
In Fig. 1 wird eine Signallampe L über einen Lampentransformator LT in bekannter Weise betrieben. Lampe und Lampentransformator befinden sich im Außenbereich A eines Stellwerks ST. Die Primärwicklung des Lampentransformators ist über eine bis zu 6,5 km lange Kabelzuleitung, welche Kabeladern K1 und K2 enthält, mit der Stellwerkseinrichtung verbunden. Der Betriebswechselstrom, den die Signallampe aus einer Speiseeinrichtung SP bezieht, fließt über die Primärwicklung eines Überwachertransformators ÜT, mit dessen Sekundärwicklung eine hier nicht dargestellte Überwachungsschaltung ÜS, z.B. ein Überwacherrelais verbunden ist.In Fig. 1, a signal lamp L is operated in a known manner via a lamp transformer LT. The lamp and lamp transformer are located in the outer area A of a signal box ST. The primary winding of the lamp transformer is connected to the interlocking device via a cable feed line up to 6.5 km long, which contains cable cores K1 and K2. The operating alternating current that the Signal lamp obtained from a supply device SP flows through the primary winding of a monitoring transformer ÜT, to the secondary winding of which a monitoring circuit ÜS, not shown here, for example a monitoring relay, is connected.
Für die Kaltfadenprüfung sind eine Meßspannungsquelle QM, hier ein einfacher, z.B. netzgespeister Trenntransformator, eine schematisch durch einen Wechsler eines Relais wiedergegebene Anschaltvorrichtung AN, ein Spannungswandler W und eine Auswerteschaltung AS vorgesehen.A measuring voltage source QM, here a simple one, e.g. mains-powered isolating transformer, a connecting device AN schematically represented by a changeover contact of a relay, a voltage converter W and an evaluation circuit AS are provided.
Grundsätzlich kann als Meßspannungsquelle auch das die Signallampe während der Betriebsphasen speisende Wechselspannungsnetz verwendet werden. Ein besonderer Meßspannungstransformator wird dadurch eingespart.In principle, the AC voltage network that feeds the signal lamp during the operating phases can also be used as the measurement voltage source. This saves a special measuring voltage transformer.
Die Anschaltvorrichtung verbindet eine erste Klemme der Meßspannungsquelle abwechselnd mit einer von beiden Kabeladern K1 oder K2. Die zweite Klemme der Meßspannungsquelle ist über die Primärwicklung des Spannungswandlers permanent mit der Kabelader K2 verbunden.The connecting device alternately connects a first terminal of the measuring voltage source to one of the two cable wires K1 or K2. The second terminal of the measuring voltage source is permanently connected to the cable core K2 via the primary winding of the voltage converter.
Es fließt damit ständig ein Meßstrom durch die Primärwicklung des Spannungswandlers, der jedoch unterschiedliche Werte annimmt, je nachdem, mit welcher Kabelader die erste Klemme der Meßspannungsquelle verbunden ist. Ist die Meßspannung mit der Kabelader K1 verbunden, so fließt der Meßstrom (bei dunkelgeschalteter Signallampe, d.h. abgetrennter Signallampenspeisung) über die Kabelader K1, die Primärwicklung des Lampentransformators LT und die Kabelader K2 in die Primärwicklung des Spannungswandlers W. Ist die Meßspannung mit der Kabelader K2 verbunden, liegt sie direkt an der Primärwicklung des Spannungswandlers an und ein vom induktiven Widerstand des Spannungswandlers abhängiger Meßstrom stellt sich ein.A measuring current therefore constantly flows through the primary winding of the voltage converter, which, however, assumes different values, depending on which cable wire the first terminal of the measuring voltage source is connected to. If the measuring voltage is connected to the cable core K1, the measuring current (with the signal lamp switched off, i.e. the signal lamp supply is disconnected) flows via the cable core K1, the primary winding of the lamp transformer LT and the cable core K2 into the primary winding of the voltage converter W. If the measuring voltage is with the cable core K2 connected, it lies directly on the primary winding of the voltage converter and a measuring current dependent on the inductive resistance of the voltage converter is established.
Der über die Primärwicklung des Lampentransformators fließende Meßstrom darf nicht so hoch ansteigen können, daß die Signallampe zum Leuchten gebracht wird. Im störungsfreien Betrieb ist dies durch die hohe Eingangsimpedanz der Primärwicklung des Spannungswandlers oder eines vergleichbaren induktiven Meßwiderstandes gewährleistet. Um auch bei Kurzschluß des Meßwiderstandes oder der Auswerteeinrichtung sicherzustellen, daß der Meßstrom keine zu hohen Werte erreicht, kann dieser zusätzlich z.B. durch entsprechende Auslegung des die Meßspannungsquelle bildenden Transformators begrenzt werden.The measuring current flowing through the primary winding of the lamp transformer must not be able to rise so high that the signal lamp is illuminated. In trouble-free operation, this is ensured by the high input impedance of the primary winding of the voltage converter or a comparable inductive measuring resistor. In order to ensure that the measuring current does not reach too high values, even if the measuring resistor or the evaluation device is short-circuited, it can also be e.g. be limited by appropriate design of the transformer forming the measuring voltage source.
Wird die in der Sekundärwicklung des Spannungswandlers induzierte Spannung gemessen, so wird bei intakter Signallampe nur eine geringe Änderung in Abhängigkeit vom Takt der Anschaltvorrichtung festgestellt. Der Widerstand der Kabeladern und der Widerstand des durch die Signallampe belasteten Lampentransformators sind klein gegenüber dem induktiven Widerstand des Spannungswandlers. Tritt jedoch eine Unterbrechung des Lampenfadens auf, so entfällt die sekundärseitige Belastung des Lampentransformators und seine Primärwicklung nimmt einen hohen induktiven Widerstand an. Die Primärwicklungen des Lampentransformators und des Spannungswandlers bilden dann einen induktiven Spannungsteiler und die an der Primärwicklung des Spannungswandlers abfallende Spannung geht auf etwa die Hälfte der direkt anliegend gemessenen Meßspannung zurück.If the voltage induced in the secondary winding of the voltage converter is measured, only a slight change as a function of the clock of the connecting device is found when the signal lamp is intact. The resistance of the cable wires and the resistance of the lamp transformer loaded by the signal lamp are small compared to the inductive resistance of the voltage converter. However, if the lamp thread is interrupted, the secondary load on the lamp transformer is eliminated and its primary winding assumes a high inductive resistance. The primary windings of the lamp transformer and the voltage converter then form an inductive voltage divider and the voltage drop across the primary winding of the voltage converter is reduced to approximately half of the directly measured measurement voltage.
Die Auswerteschaltung stellt auf der Sekundärseite des Spannungswandlers jetzt eine Wechselspannung fest, deren Amplitude sich im Takt der Anschaltvorrichtung verdoppelt bzw. halbiert. Diese Amplitudenänderung kann nun mit einem vorgegebenen Wert verglichen werden, den sie bei Glühfadenbruch sicher übersteigt. Es kann die Abgabe einer Störungsmeldung davon abhängig gemacht werden.The evaluation circuit now detects an alternating voltage on the secondary side of the voltage converter, the amplitude of which doubles or halves in time with the switching device. This change in amplitude can now be compared with a predetermined value, which it surely exceeds if the filament breaks. The submission of a fault report can be made dependent on this.
Die Einrichtung nach Fig. 2 unterscheidet sich von der nach Fig. 1 dadurch, daß die beiden Kabeladern K1 und K2 mit Meßspannungen unterschiedlicher Phasenlage verbunden werden.The device according to FIG. 2 differs from that according to FIG. 1 in that the two cable cores K1 and K2 are connected to measuring voltages of different phase positions.
Zur Erzeugung dieser unterschiedlichen Meßspannungen ist der die Meßspannungen liefernde Transformator (Meßspannungsquelle QM) sekundärseitig mit einer Mittelanzapfung versehen, die auf Bezugspotential (hier Erdpotential) gelegt ist. Zusätzlich enthält der Meßspannungstransformator eine zweite Sekundärwicklung zur Gewinnung einer Vergleichswechselspannung.To generate these different measuring voltages, the transformer (measuring voltage source QM) supplying the measuring voltages is provided on the secondary side with a center tap which is connected to the reference potential (here ground potential). In addition, the measuring voltage transformer contains a second secondary winding for obtaining a comparison AC voltage.
Die Auswerteschaltung ist hier über einen Kondensator C kapazitiv an einen anstelle des Spannungswandlers verwendeten, induktiven Meßwiderstand RM angekoppelt. Letzterer verhält sich wie die Primärwicklung des im vorstehenden Ausführungsbeispiel verwendeten Spannungswandlers und könnte auch hier durch eine solche ersetzt werden.Here, the evaluation circuit is capacitively coupled via a capacitor C to an inductive measuring resistor RM used instead of the voltage converter. The latter behaves like the primary winding of the voltage converter used in the above exemplary embodiment and could also be replaced here by one.
Die Auswerteschaltung AS enthält hier einen Gleichrichter GL, einen nachgeschalteten Tiefpaß TP und einen Schwellenwertschalter SW. Zusätzlich sind eine Phasenvergleichsschaltung PH und ein ausgangsseitiges Und-Glied UG vorhanden.The evaluation circuit AS here contains a rectifier GL, a downstream low-pass filter TP and a threshold switch SW. In addition, a phase comparison circuit PH and an output gate UG are available.
Die am Meßwiderstand RM abgegriffene Wechselspannung gelangt über den Kondensator C an den Eingang des Gleichrichters, der sie gleichrichtet und dem Tiefpaß zuführt.The AC voltage tapped off at the measuring resistor RM reaches the input of the rectifier via the capacitor C, which rectifies it and supplies it to the low-pass filter.
Der Tiefpaß ist so bemessen, daß er die Wechselspannungsfrequenz sperrt, mit der langsameren Frequenz der Anschaltvorrichtung ablaufende Spannungsänderungen dagegen durchläßt. Diese werden, z.B. nach abermaliger Gleichrichtung, in dem nachgeschalteten Schwellenwertschalter mit einer vorgegebenen Schwellspannung UR verglichen. Das Ausgangssignal wird nicht direkt zur Störungsmeldung verwendet, sondern vorher in dem ausgangsseitigen Und-Glied UG mit dem Ausgangssignal der Phasenvergleichsschaltung PH konjuntiv verknüpft.The low-pass filter is dimensioned in such a way that it blocks the AC voltage frequency, but on the other hand allows voltage changes that occur at the slower frequency of the connecting device to pass through. These are compared, for example after rectification again, in the downstream threshold switch with a predetermined threshold voltage UR. The output signal is not used directly for fault reporting, but is previously conjunctively linked in the output-side AND gate UG with the output signal of the phase comparison circuit PH.
Diese Phasenvergleichsschaltung, der die am Meßwiderstand abgegriffene Spannung ebenfalls zugeführt wird, vergleicht die Phasenlage dieser Spannung mit der Phasenlage der am Meßspannungstransformator gewonnenen Vergleichswechselspannung. Durch phasenempflindliche Gleichrichtung kann hier z.B. ein Wechselspannungssignal mit der Frequenz der Anschaltvorrichtung gewonnen werden, welches, wie oben im Zusammenhang mit der Prüfung der Amplitude der gemessenen Spannung beschrieben, gleichgerichtet und mit der der Phasenvergleichsschaltung zugeführten vorgegebenen Referenzspannung UR verglichen werden kann.This phase comparison circuit, to which the voltage tapped at the measuring resistor is also fed, compares the phase position of this voltage with the phase position of the comparison AC voltage obtained at the measuring voltage transformer. Phase-sensitive rectification can e.g. an AC voltage signal can be obtained with the frequency of the switching device, which, as described above in connection with the testing of the amplitude of the measured voltage, can be rectified and compared with the predetermined reference voltage UR supplied to the phase comparison circuit.
Der Ausgang des Und-Gliedes liefert nur dann ein das Intaktsein des Signallampenfadens anzeigendes Signal auf eine Ausgangsleitung AL, wenn sowohl die für den Ausfall des Lampenfadens charakteristischen Spannungsänderungen am Meßwiderstand ausbleiben als auch die Phasenvergleichsschaltung ein Ausgangssignal liefert, das den regelmäßigen Wechsel der Phasenlage der am Meßwiderstand abfallenden Spannung anzeigt.The output of the AND gate only delivers a signal indicating the intactness of the signal lamp thread to an output line AL if both the voltage changes at the measuring resistor which are characteristic of the failure of the lamp thread fail and the phase comparison circuit provides an output signal which regularly changes the phase position of the Measuring resistance of the falling voltage.
Ein Ausfall der Anschaltvorrichtung, z.B., der sonst nicht bemerkt würde, wird so durch Ausbleiben des Phasenlagenwechsels erkannt.A failure of the connecting device, e.g., which would otherwise not be noticed, is thus recognized by the absence of the phase change.
Claims (6)
- Arrangement for making cold-filament tests on signal lamps located in the outdoor installation of an interlocking which are fed from the interlocking station via a feeder cable and a lamp transformer located near the respective signal lamp and are monitored during operation by evaluating the feed current,
characterized in that the interlocking station includes a connecting device (AN) which, when the signal lamp (L) is extinguished, connects the cable conductors (K1, K2) running to the primary winding of the lamp transformer (LT) alternately to one terminal of an AC measurement voltage source (QM) having its other terminal connected via an inductive measuring resistor (W) to one of the cable conductors, and that the interlocking station includes an evaluating circuit (AS) which measures the voltage drop across the measuring resistor or the current flowing through the measuring resistor and checks whether a change in the voltage drop or in the current through the measuring resistor occurring at the switching rate of the connecting device (AN) exceeds a predetermined threshold value, and triggers a fault message if that is the case. - An arrangement as claimed in claim 1, characterized in that the inductive measuring resistor is formed by the primary winding of a voltage transformer, and that the evaluating circuit is connected to the secondary winding of said voltage transformer.
- An arrangement as claimed in claim 1, characterized in that the evaluating circuit is capacitively coupled to the measuring resistor.
- An arrangement as claimed in claim 1, characterized in that the evaluating circuit is connected to the output stage of an optocoupler whose input stage is connected in parallel with the measuring resistor.
- An arrangement as claimed in any one of claims 1 to 3, characterized in that the measurement voltage source (QM) provides two measurement voltages of opposite phase, that the connecting device connects each cable conductor to another terminal of the measurement voltage source, and that the evaluating circuit includes a phase comparator (PH) which compares the phase of the voltage dropping across the measuring resistor or that of the current flowing through the measuring resistor with the phase of one of the measurement voltages and provides a fault message if the phase does not change at the switching rate of the connecting device.
- An arrangement as claimed in claims 1 to 5, characterized in that the evaluating circuit is a computer preceded by an analog-to-digital converter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4110990 | 1991-04-05 | ||
| DE4110990A DE4110990A1 (en) | 1991-04-05 | 1991-04-05 | DEVICE FOR TESTING SIGNAL LAMPS IN RAILWAY SYSTEMS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0507186A2 EP0507186A2 (en) | 1992-10-07 |
| EP0507186A3 EP0507186A3 (en) | 1994-07-13 |
| EP0507186B1 true EP0507186B1 (en) | 1996-10-16 |
Family
ID=6428864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92105023A Expired - Lifetime EP0507186B1 (en) | 1991-04-05 | 1992-03-24 | Device for testing signal lamps in railway systems |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0507186B1 (en) |
| AT (1) | ATE144219T1 (en) |
| DE (2) | DE4110990A1 (en) |
| ES (1) | ES2095974T3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29514390U1 (en) * | 1995-09-07 | 1997-01-16 | Siemens Ag | Circuit arrangement for DC coupling into an AC voltage network |
| WO2005057231A1 (en) * | 2003-12-11 | 2005-06-23 | Conti Temic Microelectronic Gmbh | Method for functional testing of a lamp circuit |
| DE102004009006A1 (en) * | 2003-12-11 | 2005-07-14 | Conti Temic Microelectronic Gmbh | Method for functional testing of a lamp circuit |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061828A (en) * | 1958-03-11 | 1962-10-30 | Basic Products Corp | Circuit means |
| DE1530407B2 (en) * | 1965-08-12 | 1970-11-05 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Monitoring device for alternating current circuits of the light signals in railway systems |
| DE1530415B1 (en) * | 1966-03-19 | 1970-03-12 | Standard Elek K Lorenz Ag | Circuit arrangement for monitoring light signals, in particular light signals fed by alternating current, in railway safety systems |
| BE794608A (en) * | 1972-01-28 | 1973-05-16 | Plessey Handel Investment Ag | IMPROVEMENTS RELATING TO THE LAYOUT OF CIRCUITS |
| GB2029616A (en) * | 1978-09-04 | 1980-03-19 | Philips Nv | Electrical load monitoring arrangement |
| FR2461626A1 (en) * | 1979-07-16 | 1981-02-06 | Jeumont Schneider | DEVICE FOR SUPPLYING AND MONITORING THE CORRECT FUNCTIONING OF A RAILWAY SIGNALING FIRE |
| DE3338490A1 (en) * | 1983-10-22 | 1985-05-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Circuit arrangement for monitoring the operating state of AC loads used in the external system of a signal box |
| SU1158428A1 (en) * | 1983-12-14 | 1985-05-30 | Московский Ордена Ленина И Ордена Трудового Красного Знамени Институт Инженеров Железнодорожного Транспорта | Device for switching on light signal lamps |
| DE3419121C2 (en) * | 1984-05-23 | 1986-12-04 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Circuit arrangement for operating a light signal in a railway system |
| SU1507630A1 (en) * | 1986-07-22 | 1989-09-15 | Московский Институт Инженеров Железнодорожного Транспорта | Device for checking burning-out of two-filament traffic light lamp |
| DE3920430A1 (en) * | 1989-06-22 | 1991-01-03 | Standard Elektrik Lorenz Ag | CIRCUIT ARRANGEMENT FOR MONITORING AC POWER CONSUMERS IN RAILWAY SIGNALING SYSTEMS |
| DE9102056U1 (en) * | 1991-02-21 | 1991-05-08 | Siemens Ag, 8000 Muenchen, De |
-
1991
- 1991-04-05 DE DE4110990A patent/DE4110990A1/en not_active Withdrawn
-
1992
- 1992-03-24 AT AT92105023T patent/ATE144219T1/en active
- 1992-03-24 DE DE59207359T patent/DE59207359D1/en not_active Expired - Lifetime
- 1992-03-24 EP EP92105023A patent/EP0507186B1/en not_active Expired - Lifetime
- 1992-03-24 ES ES92105023T patent/ES2095974T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4110990A1 (en) | 1992-10-08 |
| EP0507186A3 (en) | 1994-07-13 |
| DE59207359D1 (en) | 1996-11-21 |
| ES2095974T3 (en) | 1997-03-01 |
| ATE144219T1 (en) | 1996-11-15 |
| EP0507186A2 (en) | 1992-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3635682C2 (en) | ||
| DE2903809A1 (en) | MONITORING AND DISPLAY CIRCUIT | |
| DE4221916A1 (en) | Monitoring circuit for switch status in electrical power circuit - has switch coupled to additional AC source and circuit elements forming resonance circuit | |
| DE3319306A1 (en) | ERROR DETECTION CIRCUIT FOR PARALLEL POWER SUPPLIES SUPPLYING A CONSUMER | |
| DE102014103321A1 (en) | Insulation monitoring for series-compensated windings of a contactless power transmission system | |
| EP0507186B1 (en) | Device for testing signal lamps in railway systems | |
| AT398296B (en) | CIRCUIT ARRANGEMENT FOR MONITORING THE OPERATING CONDITION OF AC CONSUMERS USED IN THE OUTDOOR SYSTEM OF AN ACTUATOR | |
| DE4133936A1 (en) | Indicator unit for displaying voltage condition of HV network - has dual signal input from independent capacitor couplings and logic evaluation of signals for self monitoring visual indication of state | |
| DE3140559C2 (en) | ||
| DE3145744C1 (en) | Circuit arrangement for monitoring alternating-current loads, particularly signal lamps | |
| EP0009649B1 (en) | Circuit for controlling command conditions | |
| EP0500201B1 (en) | Circuit for monitoring alternating current supplied signal lamps | |
| EP0258214B1 (en) | Device to control electrical consumers in powered vehicles | |
| DE2042573C3 (en) | Monitoring device for ohmic consumers on alternating voltage, preferably signal lamps for road traffic | |
| EP0404143B1 (en) | Load monitoring circuit with alternating current working in railway systems | |
| DE2840848A1 (en) | LIQUID LEVEL MONITORING SYSTEM | |
| EP0165464B1 (en) | Circuit arrangement for operating a light signal in a railway system | |
| DE2314800C2 (en) | Device for contactless monitoring of consumer circuits in vehicles | |
| DE4312814C1 (en) | Fuse monitoring system for AC network - has central evaluation of phase conditions and individual evaluation of phase fuses | |
| DE102005038602A1 (en) | safety device | |
| DE2840422A1 (en) | Monitoring circuit signalling failure of landing lights - monitors each lamp by separate circuit connected in parallel to others | |
| DE469386C (en) | Circuit for automatic route blocking | |
| DE2642464A1 (en) | Low interference supply circuit safe against failure - has two separate line branches connected to two supply units with monitoring device at their outputs | |
| EP0582890B1 (en) | Circuit arrangement | |
| DE3330869A1 (en) | Circuit for detecting shorts to earth in the feed circuits of rotary current drives for sets of points |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE ES FR IT LI LU |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALCATEL N.V. Owner name: ALCATEL SEL AKTIENGESELLSCHAFT |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE ES FR IT LI LU |
|
| 17P | Request for examination filed |
Effective date: 19940712 |
|
| 17Q | First examination report despatched |
Effective date: 19951020 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE ES FR IT LI LU |
|
| REF | Corresponds to: |
Ref document number: 144219 Country of ref document: AT Date of ref document: 19961115 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: JUERG ULRICH C/O ALCATEL STR AG |
|
| REF | Corresponds to: |
Ref document number: 59207359 Country of ref document: DE Date of ref document: 19961121 |
|
| ITF | It: translation for a ep patent filed |
Owner name: DOTT. ANTONIO SERGI |
|
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2095974 Country of ref document: ES Kind code of ref document: T3 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19970331 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20010316 Year of fee payment: 10 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020325 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030410 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20110317 Year of fee payment: 20 Ref country code: IT Payment date: 20110318 Year of fee payment: 20 Ref country code: CH Payment date: 20110314 Year of fee payment: 20 Ref country code: AT Payment date: 20110228 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20110316 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59207359 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59207359 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20120326 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 144219 Country of ref document: AT Kind code of ref document: T Effective date: 20120324 |