EP0432626B1 - Circuit for monitoring an alternating current supplied light signal by direct voltages - Google Patents

Circuit for monitoring an alternating current supplied light signal by direct voltages Download PDF

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Publication number
EP0432626B1
EP0432626B1 EP90123332A EP90123332A EP0432626B1 EP 0432626 B1 EP0432626 B1 EP 0432626B1 EP 90123332 A EP90123332 A EP 90123332A EP 90123332 A EP90123332 A EP 90123332A EP 0432626 B1 EP0432626 B1 EP 0432626B1
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EP
European Patent Office
Prior art keywords
signal
lamp
signal lamp
monitoring
signal lamps
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
EP90123332A
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German (de)
French (fr)
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EP0432626A2 (en
EP0432626A3 (en
Inventor
Hellmuth Fricke
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Siemens AG
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Siemens AG
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Publication of EP0432626A2 publication Critical patent/EP0432626A2/en
Publication of EP0432626A3 publication Critical patent/EP0432626A3/en
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Publication of EP0432626B1 publication Critical patent/EP0432626B1/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/097Supervising of traffic control systems, e.g. by giving an alarm if two crossing streets have green light simultaneously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12Visible signals
    • B61L5/18Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809Daylight signals
    • B61L5/1881Wiring diagrams for power supply, control or testing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00Remote control of local operating means for points, signals, or trackmounted scotch-blocks
    • B61L7/06Remote control of local operating means for points, signals, or trackmounted scotch-blocks using electrical transmission
    • B61L7/08Circuitry
    • B61L7/10Circuitry for light signals, e.g. for supervision, back-signalling
    • B61L7/103Electric control of the setting of signals

Definitions

  • the invention relates to a circuit according to the preamble of claim 1.
  • Such a circuit is known from DE-PS 35 16 612.
  • Contacts of monitoring relays arranged at the signal lamps are used to report the operating states of the individual signal lamps of a light signal to the signal box, wherein in each monitoring circuit both contacts of the monitoring relay assigned to the stop signal lamp and contacts of at least one monitoring relay assigned to a travel signal lamp are arranged.
  • this requires individual wiring of the monitoring circuits on the light signal, depending on the signal terms to be displayed, and for the modules assigned to the individual signal lamps, the inclusion of switching means which are controlled by other modules.
  • the object of the invention is to provide a circuit designed according to the preamble of claim 1, which manages in the assemblies assigned to the individual light signals without control and monitoring switching means of other assemblies.
  • the particular advantage of the circuit according to the invention lies in the fact that uniformly designed switching modules can be used for the control as well as for the monitoring of the stop and drive signal lamps on the light signal, so that no individual wiring of the individual modules with switching means of other modules is required is.
  • Fig. 1 shows schematically the control and monitoring circuits of a light signal with a stop signal lamp H and a single drive signal lamp F1.
  • the two signal lamps are connected via two feed lines LH and LF1 to an AC power supply device, not shown, in the signal box; they are switched via switch contacts S0 and S1. It is assumed that the stop signal lamp H is switched on.
  • a monitoring device IG0 assigned to the stop signal lamp for example controlled by the lamp current via a current transformer, derives a DC voltage from the lamp current flowing via the signal lamp, the level of which is analogous to the lamp current and applies this as a monitoring polarity voltage in a predetermined polarity to one of its supply lines LH and via one Line L1 to one of the feed lines LF1 of the drive signal lamp F1.
  • a detector M1 is connected to the feed lines of the two signal lamps and, because of the direct voltage present at its inputs E1M1 and E2M1 in the predetermined polarity, has, for example, positive output potential at its output.
  • the amplitude of the output signal is regarded as a sign that the stop signal lamp lights up correctly. If the lamp burns out, the DC voltage at the inputs of the detector disappears and the downstream evaluation device recognizes the presence of a fault from this.
  • a monitoring device IG1 assigned to this signal lamp derives a DC voltage from the lamp current flowing via the drive signal lamp and leads it in phase opposition to the monitoring DC voltage that can be applied by the monitoring device IG0 via one of its own supply lines and the line L0 and one of the supply lines of the switched off stop signal lamp to the detector M1 in the signal box.
  • the travel signal lamp F1 has a lamp current-controlled switch (not shown in the drawing), for example a relay, which reverses its switching contacts K1.1 and K1.2 when the lamp current is sufficiently high.
  • the contact K1.1 disconnects the connection between the positive pole of the monitoring device IG1 assigned to the travel signal lamp F1 and the feed lines of the stop signal lamp H, while the contact K1.2 connects the positive pole of the monitoring device IG1 to the feed lines of its own signal lamp.
  • the negative pole of the monitoring device IG1 of the drive signal lamp is connected via line L0 to one of the feed lines leading to the stop signal lamp.
  • the subordinate evaluation logic recognizes that a sufficiently high supply current is now flowing via the travel signal lamp F1 of the light signal monitored by it.
  • An amplitude evaluation of the detector output potentials is only necessary if the lamp current-controlled switch already responds to a lamp current flowing through the travel signal lamp which does not yet lead to the lamp filament lighting up. If the lamp current-controlled switch only switches when the associated signal lamp lights up, the amplitude evaluation is already carried out in the lamp current-controlled one Switch instead of and no longer needs to be made by the evaluation logic.
  • two detectors connected in series on the input side can also be provided, one of which in one phase position and the other in the other Phase position of the applied DC voltage leads to output potential. If there is no monitoring voltage on the supply lines of the signal lamps in the event of a fault, the detector or detectors also have no output potential; this is recognized as a malfunction by the downstream evaluation logic.
  • the switching means near the lamp for feeding and monitoring the individual signal lamps are accommodated in associated switching modules Mo0 and Mol, which are connected to one another via the two lines L0 and L1 and to the signal box via the feed lines LH and LF1.
  • switching modules Mo0 and Mol which are connected to one another via the two lines L0 and L1 and to the signal box via the feed lines LH and LF1.
  • the two switching modules there are only those switching means which are assigned to the associated signal lamp; an individual linkage of switching means, which are assigned to different signal lamps as in the prior art, does not take place in the individual modules.
  • FIG. 2 shows a light signal with a stop signal lamp H and two travel signal lamps F1 and F2, which can be switched on individually or together as required; dashed lines indicate that the light signal can be equipped with additional signal lamps to represent further travel signal terms, the associated switching modules of which must be connected to associated feed lines and to the lines L0 and L1 routed via the other switching modules.
  • the reference symbols chosen in FIG. 1 have been retained for the corresponding components. It is assumed that the signal lamp F1 is switched on to represent a first travel signal term. The switch contact S1 is closed, while the switch contacts SO and S2 for the stop signal lamp H and the second Trip signal lamp F2 are open.
  • the associated lamp current-controlled monitoring device IG1 derives a corresponding DC monitoring voltage from the lamp current flowing via the signal lamp F1 and applies this in a predetermined polarity via the contact K1.2 of a lamp current-controlled switch, which is assumed to be set, not shown, to one of its feed lines LF1 and via the line L0 one of the feed lines LH leading to the stop signal.
  • the contact K1.1 interrupts the connection of the lamp current-controlled monitoring device IG0 assigned to the stop signal lamp to the line L1.
  • the detector M1 detects the positive potential present at its input E1M1 via the feed lines LF1 and the negative potential present at its input E2M1 via the feed lines LH and thereupon sets its output to negative potential. From this, the evaluation logic recognizes the lighting of the signal lamp F1.
  • the switching module Mo1 assigned to the travel signal lamp F1 has a monitoring device UG1 controlled by the lamp voltage, which derives a direct voltage from the lamp voltage and switches this to the two lines L0 and L1 between the individual modules Mo to Mo2.
  • the polarity of this DC voltage is different from the polarity of the DC voltages that can be applied to these lines by the lamp current-controlled monitoring devices IG0 and IG1.
  • This DC voltage derived from the lamp voltage of the travel signal lamp switched on is connected via lines L0 and L1 to one of the feed lines LH leading to the switched off stop signal lamp and to one of the feed lines leading to all switched off travel signal lamps and is used in the signal box to uniquely identify the signal lamp or signal lamps of the light signal which are respectively switched on.
  • the one input E1M2 of the detector M2 is connected to the supply lines LF2 leading to the switched off signal lamp F2 and the line L1 to the negative pole of the activated monitoring device UG1, while the second input E2M2 of the detector M2 is connected to one of the supply lines LH leading to the switched off stop signal lamp and the line L0 at the positive pole of the monitoring device UG1 of the activated drive signal lamp F1.
  • the detector M2 then provides positive potential at its output; from this the downstream evaluation device recognizes the current operating state of the light signal to be monitored.
  • the detectors assigned to these signal lamps would also have positive potential on the output side, as long as the associated signal lamps are dark, ie the evaluation logic would recognize the glow of the drive signal lamp F1 only from the polarity of the detector output signals.
  • the travel signal lamp F2 is switched on; the travel signal lamp F1 should be switched off. If the lamp current is sufficiently high, the lamp current-controlled switch associated with the connected drive signal lamp F2 changes its switch contacts K2.1 and K2.2 and thus switches a connection between the positive pole of the associated current-controlled monitoring device IG2 and the input E1M2 of the associated detector M2; the negative pole of the monitoring device IG2 is connected via line L0 and one of the lines LH of the switched-off stop signal lamp to the other input E2M2 of detector M2; this detector then outputs negative potential at its output.
  • a monitoring device UG2 which is controlled by the supply voltage to the signal lamp F2, derives a direct voltage from the supply voltage and switches it in phase opposition to the direct monitoring voltage derived from the lamp current on lines L0 and L1. From there, positive potential passes via L0 and one of the supply lines LH leading to the deactivated stop signal lamp to one input E2M1 of detector M1, while negative potential via line L1 and the now closed contact K1.1 of the switch in the switching module Mo1 of the deactivated trip Signal lamp F1 is present at the other input E1M1 of detector M1. This detector emits positive potential at its output. The detectors of other travel signal lamps included in the light signal would also emit a positive output potential when the travel signal lamp F2 was switched on. as long as the associated signal lamps themselves are dark. From this, the evaluation device determines the operating state of the light signal monitored by it.
  • the lamp current-controlled monitoring device IG0 assigned to it initiates via line L1 and the contacts K1.1 and K2.1 in the basic position of the lamp current-controlled switches in the switching modules Mo1 and Mo2 of the switched-off drive signal lamps and one of its own signal lamp leading feed lines LH that all detectors M1, M2 have positive potential on the output side.
  • the associated current-controlled monitoring devices cause the detectors assigned to these travel signal lamps in the signal box to emit negative output potential.
  • the detectors of any other travel signal lamps that are not switched on have positive output potential on the output side; the detectors derive this potential from the voltages applied to the lines Lo and L1 by the voltage-controlled monitoring devices of the connected drive signal lamps.
  • FIGS. 1 and 2 it is assumed that only messages about the lighting or non-lighting of the signal lamps are to be transmitted to the signal box. If, in addition to these messages, further messages are to be transmitted to the signal box, for example whether the main thread or the secondary thread lights up in a switched-on signal lamp, the circuits shown schematically in FIGS. 1 and 2 are also schematic in accordance with those in FIG. 3 to complete circuit parts shown. These circuit parts relate to the switching module Mo0 assigned to the stop signal lamp H and to the switching module Mo1 assigned to a travel signal lamp F1. These additional circuit parts are the same for all signal lamps; Any number of circuit parts for any number of switching modules can be connected to one another via the lines L2 to L4 connecting the circuit parts to one another.
  • Each additional circuit part contains a lamp thread monitor LÜH or LÜF1, the output of which is potential-free if and as long as the main thread of the associated signal lamp is lit and whose output carries potential of a certain value if the auxiliary thread of the relevant signal lamp is lit.
  • the arrangement can be such that the output of the lamp thread monitor is only potential-free if the associated secondary thread is functional; this must be determined by test procedures which are not to be explained in more detail here.
  • the absence of output potential at the lamp thread monitor leads via the line LH to the fact that the switch contacts U1, U2 of a changeover switch U reach the switch position shown in the drawing; in the presence of potential, i.e. when a switched main thread burns out or a lamp auxiliary thread is not ready to be switched on, the switch contacts U1, U2 change to the switch position (not shown).
  • Each signal lamp is also assigned a monitoring device UG0.1 or UG1.1 which is controlled by the lamp voltage present and which derives a DC voltage from the lamp voltage present and places this in the same phase on two lines L2 and L3 connecting the circuit parts to one another.
  • the lamp thread monitor LÜH has controlled the switch contacts U1, U2 via the line L4 in the switch position shown. In this switching position, the switching contact U1 connects the negative pole of the monitoring device UG0.1 to one of the feed lines LH leading to the stop signal lamp, while the other switching contact U2 connects the positive pole of this monitoring device to a separate connection V to the signal box.
  • This separate connection can be represented by ground connections in the signal box and in the outdoor area, as is known for this purpose, for example from DE-PS 35 16 612; there, however, it is only a question of monitoring the main / secondary threads of a total of only two signal lamps.
  • the detector M arranged in the signal box With the assumed switching position of the switching contacts and the assumed operating state of the stop signal lamp, the detector M arranged in the signal box outputs potential of a certain value at its output, from which the downstream evaluation device recognizes the correct operating state of the switched on stop signal lamp. If the main thread of the stop signal lamp burns out and the secondary thread of the signal lamp is then switched on by switching devices (not shown), the lamp thread monitor LÜH controls the switching contacts U1, U2 into the other switching position via line L4.
  • the positive pole of the voltage-controlled monitoring device UGO.1 is now connected via the switch contact U1 to one of the feed lines LH leading to the stop signal lamp, and the negative pole of the monitoring device is connected to the separate connection V via the switch contact U2.
  • the detector M is now driven in phase opposition to the previously assumed connection of the main thread of the stop signal lamp and changes the potential that can be tapped at its output. If the drive signal lamp F1 is switched on instead of the stop signal lamp H, the associated lamp thread monitor LÜF1 controls the two switch contacts U1, U2 in the same way as that of the stop signal lamp. The same applies to the monitoring device UG1.1 which is controlled by the supply voltage of the travel signal lamp F1 and which switches a DC voltage to the lines L2 and L3 when the signal lamp is switched on.
  • detector M If the main thread of the drive signal lamp lights up, detector M outputs the same potential as when the main thread of the stop signal lamp is switched on.
  • the switching contacts U1, U2 are controlled into the other switching position via the line L4 and the detector M outputs potential of the other value at its output. If, in addition to the identification of the respectively switched on signal lamp, the identification of the respectively switched on lamp filament is also to take place, the circuits according to FIGS. 1 and 2 are to be supplemented by the circuit parts shown in FIG.
  • the monitoring device UGO.1 of the stop signal lamp which is controlled by the supply voltage, uses the monitoring DC voltage it provides in phase opposition to the DC voltages switched by the corresponding monitoring devices UG1.1 of the travel signal lamps on lines L2 and L3.
  • each change from stop to travel and vice versa leads to a change in the output potential of detector M and thus to a functional check of this detector.
  • the evaluation of the output potential of the detector is then to be made dependent on the actual operating state of the switched-on signal lamp detected by the circuits according to FIGS. 1 and 2 or on the target operating state of this lamp given by the switching state of the actuators.
  • FIG. 4 shows a technical implementation of the circuit according to the invention using a light signal with a stop signal lamp H and a drive signal lamp F1; the light signal can contain any number of drive signal lamps; a corresponding number of switching modules are then to be strung together via the associated connecting lines L0 to L4.
  • Each switching module contains the switching means that are required on the light signal in order to report the signal signal that is currently switched on to the signal box, and each switching module also contains the switching means that indicate in the signal box whether the signal signal that is switched on is via the main or secondary thread Representation arrives, or whether the auxiliary threads of all connected signal lamps operated via their main threads are functional.
  • the reference symbols known from FIGS. 1 to 3 were used further for the elements shown in detail in FIG. 4.
  • the signal lamps are switched on in the signal box via isolating transformers TH1 and TF1.1, which are connected to AC voltage on the primary side via switch contacts S0, S1.
  • the secondary windings of these isolating transformers are connected via the feed lines LH and LF1 to the primary windings of isolating transformers TH2 and TF1.2 arranged in the vicinity of the signal lamps.
  • These isolating transformers are components of the switching modules Mo0 and Mo1 assigned to the individual signal lamps.
  • the signal lamps H to be switched are located on the secondary windings of the latter isolating transformers or F1.
  • Each switching module has a feed current-controlled monitoring device IG0 or IG1, which consists of a current transformer connected to the lamp circuit on the primary side and a two-way rectifier on the secondary side.
  • the positive pole of the monitoring device IG0 assigned to the stop signal lamp H is connected to the line L0, the negative pole to the line L1.
  • the current-controlled monitoring devices IG1 assigned to the drive signal lamps this is exactly the opposite; there, the negative pole of the rectifier connected to a voltage dependent on the lamp current is connected to line L0 and the positive pole is connected to line L1 via a contact K1.1 of a current-controlled switch K1 which is closed when the signal lamp is switched on and lights up.
  • each switching module has a monitoring device UG0.1 or UG1.1 controlled by the applied lamp voltage.
  • these monitoring devices feed in the specified polarity onto the lines L2 and L3.
  • These monitoring devices are used to provide the voltage required to report the respectively connected main or secondary thread to the detector M via the changeover switch U.
  • Each travel signal lamp is also assigned a monitoring device UG1.2 which is controlled by the supply voltage present and which also consists of a Secondary winding of the associated isolating transformer TF1.2 and a two-way rectifier is formed. This two-way rectifier feeds on the lines L0 and L1 and in the same polarity as the current-controlled monitoring device IG0 of the stop signal lamp.
  • the voltage-dependent monitoring devices UG1.2 assigned to the travel signal lamps are used to apply voltage to the switching modules of further non-switched travel signal lamps via lines L0 and L1 when the signal lamp is switched on, and thus to influence the associated detectors in a predetermined manner.
  • the contact K1.2 of the switch K1 which responds when a sufficient lamp current flows, decouples the line L1 from the current-controlled monitoring device IG1; the contact of switch K1 causes positive potential to be applied to the feed lines leading to detector M1.
  • the detector M1 assumes a switching state which is different from that of the other drive signal lamps.
  • an electronic switch T1 designed as a field effect transistor is provided. This switch is connected to line L1 with its source and to line L0 with its drain.
  • the current-controlled monitoring device IG1 provides a sufficient monitoring voltage
  • its gate becomes positive with respect to the source and switches a connection between the first line L0 and the negative pole of the current-controlled monitoring device IG1 via the drain-source path.
  • the positive potential present on the first line L0 goes there from the positive pole of the lamp current-controlled monitoring device IG1 via the primary winding of the isolating transformer TF1.2, the feed lines LF1, the secondary winding of the interlocking transformer TF1.1 (in FIG.
  • the monitoring DC voltage which can be tapped off when the stop signal lamp is switched on at the associated lamp current-controlled monitoring device IG0 (in FIG. 4) then drives a monitoring DC current via detector M1, which leads to the output of positive output potential.
  • the monitoring circuit closes from the positive pole of the lamp current-controlled monitoring device IGO (in FIG. 4) of the stop signal lamp, the isolating transformers and the feed lines of the stop signal lamp, the detector M1, the isolating transformers and the feed lines of the drive signal lamp F1, a resistor R and the line L1 to the negative pole of the monitoring device IGO.
  • the resistance R is much lower than the internal resistance of the detector M1, so that there is a sufficiently high voltage for switching the detector.
  • the electronic switch T1 remains blocked because, owing to the high internal resistance of the detector M1 at the resistor R, there is no voltage drop sufficient to control the switch.
  • the detector M1 of the non-switched on travel signal lamp F1 is switched on in the same way as when the stop signal lamp is switched on a corresponding DC monitoring voltage is controlled, which is applied to the lines L0 and L1 by the lamp voltage-fed monitoring device UG2 (in FIG. 2) of the connected drive signal lamp F2.
  • a monitoring circuit is formed from the positive pole of the monitoring device UG2 via the line L0 to the stop signal lamp, from there via the associated isolating transformers and the feed lines of the stop signal lamp to the detector M1 and from there via the isolating transformers and the feed lines of the switched off trip Sinalamp F1, the resistor R and the line L1 to the negative pole of the monitoring device UG2 of the connected drive signal lamp F2.
  • the detector M1 carries positive potential on the output side.
  • the detector M2 of the connected drive signal lamp F2 on the other hand, has negative potential on the output side; the monitoring circuit for this detector leads from the positive pole of the associated current-controlled monitoring device IG2 (in FIG.
  • detectors of the type used in the exemplary embodiments which have a negative potential on the output side when the associated lamp lights up
  • detectors which then have a positive output potential two detectors can also be used advantageously. It is only important that the detectors have a positive or negative output potential depending on the direction of the current flowing through them or a resistor connected in parallel with their inputs and, in the absence of such a current, a different output potential or zero output potential and that the evaluation logic is based on the detector type used is taught.
  • the invention is not limited to light signals with only a single stop signal lamp. If there are several stop signal lamps that can be connected separately or together, the circuits for the detectors close in the manner described above, instead of only one stop signal lamp via the feed lines via the feed lines of several stop signal lamps.

Abstract

At least one detector (M1, M2) is allocated in the setting mechanism to each go-signal light (F1, F2) of a light signal, which detector assumes a first switching state (-) when the signal light is illuminated and a second, active switching state (+) when the signal light is not illuminated; the second, active switching state of all detectors characterises the illumination of the stop-signal light (H). The illumination of a signal light (e.g. F1) is detected on the light signal via a light-current-controlled monitoring device (IG1) and transmitted with a pre-defined polarity to the setting mechanism via the feeding lines (LF1) of this signal light and the feeding lines (LH) of at least one de-activated signal light (H). When the stop-signal light (H) is activated, the monitoring voltage derived from the associated monitoring device (IG0) is applied to all detectors (M1, M2) via its own feeding lines and the feeding lines of all go-signal lights, out of phase with the DC voltages which can be injected via the monitoring devices (IG1, IG2) of the go-signal lights (F1, F2). When a go-signal light (e.g. F1) is activated, a voltage-controlled monitoring device (UG1) assigned to this signal light applies a monitoring voltage in phase with the DC voltage of the current-controlled monitoring device (IG0) of the stop-signal light via the feeding lines (LH, F2) to all detectors (M2) with the exception of its own detector (M1); an out-of-phase monitoring voltage derived from the light current is applied to this detector via changeover switches (K1.1, K1.2). A logical evaluation device evaluates the switching states of the detectors. The advantage of the circuit is that uniform switching modules (Mo1, Mo2) are used on the light signal for all go-signal lights without any individual connection with switching means of other signal lights. The circuit is intended for monitoring light signals in the railway network. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Schaltung nach dem Oberbegriff des Patentanspruches 1.The invention relates to a circuit according to the preamble of claim 1.

Eine derartige Schaltung ist aus der DE-PS 35 16 612 bekannt. Zum Rückmelden der Betriebszustände der einzelnen Signallampen eines Lichtsignals an das Stellwerk dienen Kontakte von bei den Signallampen angeordneten Überwacherrelais, wobei in jedem Überwachungskreis sowohl Kontakte des der Halt-Signallampe zugeordneten Überwacherrelais als auch Kontakte mindestens eines einer Fahrt-Signallampe zugeordneten Überwacherrelais angeordnet sind. Dies verlangt für die einzelnen Lichtsignale abhängig von den jeweils darzustellenden Signalbegriffen individuelle Beschaltungen der Überwachungskreise am Lichtsignal und für die den einzelnen Signallampen zugeordneten Baugruppen am Lichtsignal die Einbeziehung von Schaltmitteln, die von anderen Baugruppen aus gesteuert werden.Such a circuit is known from DE-PS 35 16 612. Contacts of monitoring relays arranged at the signal lamps are used to report the operating states of the individual signal lamps of a light signal to the signal box, wherein in each monitoring circuit both contacts of the monitoring relay assigned to the stop signal lamp and contacts of at least one monitoring relay assigned to a travel signal lamp are arranged. For the individual light signals, this requires individual wiring of the monitoring circuits on the light signal, depending on the signal terms to be displayed, and for the modules assigned to the individual signal lamps, the inclusion of switching means which are controlled by other modules.

Aufgabe der Erfindung ist es,eine nach dem Oberbegriff des Patentanspruches 1 ausgestaltete Schaltung anzugeben, die in den den einzelnen Lichtsignalen zugeordneten Baugruppen ohne Steuer- und Überwachungsschaltmittel anderer Baugruppen auskommt.The object of the invention is to provide a circuit designed according to the preamble of claim 1, which manages in the assemblies assigned to the individual light signals without control and monitoring switching means of other assemblies.

Die Erfindung löst diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches 1.The invention solves this problem by the characterizing features of patent claim 1.

Der besondere Vorteil der erfindungsgemäßen Schaltung liegt darin, daß sowohl für die Ansteuerung als auch für die Überwachung der Halt- und der Fahrt-Signallampen am Lichtsignal jeweils einheitlich ausgebildete Schaltmoduln verwendet werden können, daß also keine individuelle Beschaltung der einzelnen Moduln mit Schaltmitteln anderer Moduln erforderlich ist.The particular advantage of the circuit according to the invention lies in the fact that uniformly designed switching modules can be used for the control as well as for the monitoring of the stop and drive signal lamps on the light signal, so that no individual wiring of the individual modules with switching means of other modules is required is.

Vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Schaltung sind in den Unteransprüchen angegeben.Advantageous refinements and developments of the circuit according to the invention are specified in the subclaims.

Die Erfindung ist nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Die Zeichnung zeigt:

in Fig. 1
das Prinzip der erfindungsgemäßen Schaltung bei einem Lichtsignal mit einer Halt- und einer Fahrt-Signallampe,
in Fig. 2
das Prinzip der erfindungsgemäßen Schaltung bei einem Lichtsignal mit mehreren Fahrt-Signallampen,
in Fig. 3
das Prinzip einer zusätzlichen Schaltung zum Übertragen weiterer Betriebszustandsmeldungen,
in Fig. 4
eine technische Ausgestaltung der erfindungsgemäßen Schaltung und
in Fig. 5
eine Abwandlung der Schaltung nach Fig. 4.
The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing. The drawing shows:
in Fig. 1
the principle of the circuit according to the invention for a light signal with a stop and a drive signal lamp,
in Fig. 2
the principle of the circuit according to the invention in the case of a light signal with a plurality of drive signal lamps,
in Fig. 3
the principle of an additional circuit for transmitting further operating status messages,
in Fig. 4
a technical embodiment of the circuit according to the invention and
in Fig. 5
a modification of the circuit of FIG. 4th

Fig. 1 zeigt schematisch die Steuer- und Überwachungskreise eines Lichtsignals mit einer Halt-Signallampe H und einer einzigen Fahrt-Signallampe F1. Die beiden Signallampen sind über je zwei Speiseleitungen LH und LF1 an eine nicht dargestellte Wechselstromversorgungseinrichtung im Stellwerk angeschlossen; geschaltet werden sie über Anschaltkontakte S0 und S1. Es ist angenommen daß die Halt-Signallampe H angeschaltet ist. Eine der Halt-Signallampe zugeordnete, beispielsweise über einen Stromwandler vom Lampenstrom gesteuerte Überwachungseinrichtung IG0 leitet aus dem über die Signallampe fließenden Lampenstrom eine Gleichspannung ab, deren Höhe analog zum Lampenstrom ist und legt diese als Überwachungsgleichspannung in vorgegebener Polarität an eine ihrer Speiseleitungen LH sowie über eine Leitung L1 an eine der Speiseleitungen LF1 der Fahrt-Signallampe F1. Im Stellwerk ist an die Speiseleitungen der beiden Signallampen ein Melder M1 angeschlossen, der aufgrund der an seinen Eingängen E1M1 und E2M1 in der vorgegebenen Polarität anliegenden Gleichspannung an seinem Ausgang beispielsweise positives Ausgangspotential führt. Die Phasenlage und die Amplitude dieses Ausgangspotentials wird von einer nachgeordneten nicht dargestellten Bewertungslogik bewertet und von dieser bei genügend hohem Lampenstrom = genügender Amplitude des Ausgangssignals als Zeichen für das ordnungsgerechte Aufleuchten der Halt-Signallampe angesehen. Brennt die Lampe durch, so verschwindet die Gleichspannung an den Eingängen des Melders und die nachgeschaltete Bewertungseinrichtung erkennt hieraus das Vorliegen einer Störung.
Wird statt der Halt- die Fahrt-Signallampe F1 angeschaltet, so leitet eine dieser Signallampe zugeordnete Überwachungeinrichtung IG1 aus dem über die Fahrt- Signallampe fließenden Lampenstrom eine Gleichspannung ab und führt diese gegenphasig zu der von der Überwachungseinrichtung IG0 anlegbaren Überwachungsgleichspannung über eine ihrer eigenen Speiseleitungen sowie die Leitung L0 und eine der Speiseleitungen der abgeschalteten Halt-Signallampe dem Melder M1 im Stellwerk zu. Hierzu weist die Fahrt-Signallampe F1 einen in der Zeichnung nicht dargestellten lampenstromgesteuerten Schalter, beispielsweise ein Relais, auf, der bei einem ausreichend hohen Lampenstrom seine Schalt-kontakte K1.1 und K1.2 umsteuert. Dabei trennt der Kontakt K1.1 die Verbindung auf zwischen dem Pluspol der der Fahrt-Signallampe F1 zugeordneten Überwachungseinrichtung IG1 und den Speiseleitungen der Halt-Signallampe H, während der Kontakt K1.2 den Pluspol der Überwachungseinrichtung IG1 auf die Speiseleitungen der eigenen Signallampe aufschaltet. Der Minuspol der Überwachungseinrichtung IG1 der Fahrt-Signallampe liegt über die Leitung L0 an einer der zur Halt-Signallampe führenden Speiseleitungen. Bei ordnungsgerechtem Betriebszustand der Fahrt-Signallampe hat damit die Polarität der an den Eingängen E1M1 und E2M1 des Melders M1 anliegenden Gleichspannung gegenüber der bei angeschalteter Halt-Signallampe gewechselt; daraufhin wechselt auch das Ausgangspotential des Melders M1. Hieraus erkennt die nachgeordnete Bewertungslogik, daß nunmehr ein ausreichend hoher Speisestrom über die Fahrt-Signallampe F1 des von ihr überwachten Lichtsignals fließt. Eine Amplitudenbewertung der Melderausgangspotentiale ist nur dann erforderlich, wenn der lampenstromgesteuerte Schalter bereits bei einem über die Fahrt-Signallampe fließenden Lampenstrom anspricht, der noch nicht zum Aufleuchten des Lampenfadens führt. Schaltet der lampenstromgesteuerte Schalter erst bei einem die zugehörige Signallampe zum Aufleuchten bringenden Lampenstrom, so findet die Amplitudenbewertung bereits im lampenstromgesteuerten Schalter statt und braucht nicht mehr von der Bewertungslogik vorgenommen werden.
Fig. 1 shows schematically the control and monitoring circuits of a light signal with a stop signal lamp H and a single drive signal lamp F1. The two signal lamps are connected via two feed lines LH and LF1 to an AC power supply device, not shown, in the signal box; they are switched via switch contacts S0 and S1. It is assumed that the stop signal lamp H is switched on. A monitoring device IG0 assigned to the stop signal lamp, for example controlled by the lamp current via a current transformer, derives a DC voltage from the lamp current flowing via the signal lamp, the level of which is analogous to the lamp current and applies this as a monitoring polarity voltage in a predetermined polarity to one of its supply lines LH and via one Line L1 to one of the feed lines LF1 of the drive signal lamp F1. In the signal box, a detector M1 is connected to the feed lines of the two signal lamps and, because of the direct voltage present at its inputs E1M1 and E2M1 in the predetermined polarity, has, for example, positive output potential at its output. The phase position and the amplitude of this output potential is evaluated by a downstream evaluation logic, not shown, and by this with a sufficiently high lamp current = sufficient The amplitude of the output signal is regarded as a sign that the stop signal lamp lights up correctly. If the lamp burns out, the DC voltage at the inputs of the detector disappears and the downstream evaluation device recognizes the presence of a fault from this.
If the drive signal lamp F1 is switched on instead of the stop signal, a monitoring device IG1 assigned to this signal lamp derives a DC voltage from the lamp current flowing via the drive signal lamp and leads it in phase opposition to the monitoring DC voltage that can be applied by the monitoring device IG0 via one of its own supply lines and the line L0 and one of the supply lines of the switched off stop signal lamp to the detector M1 in the signal box. For this purpose, the travel signal lamp F1 has a lamp current-controlled switch (not shown in the drawing), for example a relay, which reverses its switching contacts K1.1 and K1.2 when the lamp current is sufficiently high. The contact K1.1 disconnects the connection between the positive pole of the monitoring device IG1 assigned to the travel signal lamp F1 and the feed lines of the stop signal lamp H, while the contact K1.2 connects the positive pole of the monitoring device IG1 to the feed lines of its own signal lamp. The negative pole of the monitoring device IG1 of the drive signal lamp is connected via line L0 to one of the feed lines leading to the stop signal lamp. When the drive signal lamp is in the correct operating state, the polarity of the DC voltage present at the inputs E1M1 and E2M1 of the detector M1 has thus changed compared to that when the stop signal lamp is switched on; thereupon the output potential of detector M1 also changes. From this, the subordinate evaluation logic recognizes that a sufficiently high supply current is now flowing via the travel signal lamp F1 of the light signal monitored by it. An amplitude evaluation of the detector output potentials is only necessary if the lamp current-controlled switch already responds to a lamp current flowing through the travel signal lamp which does not yet lead to the lamp filament lighting up. If the lamp current-controlled switch only switches when the associated signal lamp lights up, the amplitude evaluation is already carried out in the lamp current-controlled one Switch instead of and no longer needs to be made by the evaluation logic.

Anstelle eines einzigen Melders M1, der ausgangsseitig in Abhängigkeit von der Phasenlage der ihm zugeführten Überwachungsgleichspannung Potential der einen oder anderen Wertigkeit führt, können auch zwei eingangsseitig in Reihe geschaltete Melder vorgesehen sein, von denen der eine bei der einen Phasenlage und der andere bei der anderen Phasenlage der anliegenden Gleichspannung Ausgangspotential führt. Ist an den Speiseleitungen der Signallampen im Störungsfall keine Uberwachungsspannung vorhanden, führen der oder die Melder auch kein Ausgangspotential; dies wird von der nachgeordneten Bewertungslogik als Störung erkannt.Instead of a single detector M1, which on the output side carries potential of one or the other value depending on the phase position of the DC monitoring voltage supplied to it, two detectors connected in series on the input side can also be provided, one of which in one phase position and the other in the other Phase position of the applied DC voltage leads to output potential. If there is no monitoring voltage on the supply lines of the signal lamps in the event of a fault, the detector or detectors also have no output potential; this is recognized as a malfunction by the downstream evaluation logic.

Die lampennahen Schaltmittel zum Speisen und Überwachen der einzelnen Signallampen sind in zugehörigen Schaltmoduln Mo0 und Mol untergebracht, die untereinander über die beiden Leitungen L0 und L1 und mit dem Stellwerk über die Speiseleitungen LH und LF1 verbunden sind. In den beiden Schaltmoduln gibt es nur solche Schaltmittel, die der zugehörigen Signallampe zugeordnet sind; eine individuelle Verknüpfung von Schaltmitteln, die verschiedenen Signallampen zugeordnet sind wie beim Stand der Technik, findet in den einzelnen Moduln nicht statt.The switching means near the lamp for feeding and monitoring the individual signal lamps are accommodated in associated switching modules Mo0 and Mol, which are connected to one another via the two lines L0 and L1 and to the signal box via the feed lines LH and LF1. In the two switching modules there are only those switching means which are assigned to the associated signal lamp; an individual linkage of switching means, which are assigned to different signal lamps as in the prior art, does not take place in the individual modules.

Fig. 2 zeigt ein Lichtsignal mit einer Halt-Signallampe H und zwei bedarfsweise einzeln oder gemeinsam anschaltbaren Fahrt-Signallampen F1 und F2; durch gestrichelte Linien ist angedeutet daß das Lichtsignal zur Darstellung weiterer Fahrt-Signalbegriffe bedarfsweise mit weiteren Signallampen bestückt werden kann, deren zugeordnete Schaltmoduln an zugehörige Speiseleitungen und an die über die anderen Schaltmoduln geführten Leitungen L0 und L1 anzuschließen sind. Für die einander entsprechenden Bauelemente wurden die in Fig. 1 gewählten Bezugszeichen beibehalten.
Es ist angenommen, daß die Signallampe F1 zur Darstellung eines ersten Fahrt-Signalbegriffes angeschaltet ist. Dabei ist der Anschaltkontakt S1 geschlossen, während die Anschaltkontakte SO und S2 für die Halt-Signallampe H und die zweite Fahrt-Signallampe F2 geöffnet sind. Aus dem über die Signallampe F1 fließenden Lampenstrom leitet die zugehörige lampenstromgesteuerte Überwachungseinrichtung IG1 eine entsprechende Überwachungsgleichspannung ab und legt diese in vorgegebener Polarität über den Kontakt K1.2 eines als eingestellt angenommenen, nicht dargestellten lampenstromgesteuerten Schalters an eine ihrer Speiseleitungen LF1 und über die Leitung L0 an eine der zum Halt-Signal führenden Speiseleitungen LH. Gleichzeitig unterbricht der Kontakt K1.1 die Verbindung der der Halt-Signallampe zugeordneten lampenstromgesteuerten Überwachungseinrichtung IG0 zur Leitung L1. Der Melder M1 detektiert das an seinem Eingang E1M1 über die Speiseleitungen LF1 anliegende positive Potential und das an seinem Eingang E2M1 über die Speiseleitungen LH anliegende negative Potential und legt daraufhin seinen Ausgang auf negatives Potential. Hieraus erkennt die Bewertungslogik das Leuchten der Signallampe F1.
FIG. 2 shows a light signal with a stop signal lamp H and two travel signal lamps F1 and F2, which can be switched on individually or together as required; dashed lines indicate that the light signal can be equipped with additional signal lamps to represent further travel signal terms, the associated switching modules of which must be connected to associated feed lines and to the lines L0 and L1 routed via the other switching modules. The reference symbols chosen in FIG. 1 have been retained for the corresponding components.
It is assumed that the signal lamp F1 is switched on to represent a first travel signal term. The switch contact S1 is closed, while the switch contacts SO and S2 for the stop signal lamp H and the second Trip signal lamp F2 are open. The associated lamp current-controlled monitoring device IG1 derives a corresponding DC monitoring voltage from the lamp current flowing via the signal lamp F1 and applies this in a predetermined polarity via the contact K1.2 of a lamp current-controlled switch, which is assumed to be set, not shown, to one of its feed lines LF1 and via the line L0 one of the feed lines LH leading to the stop signal. At the same time, the contact K1.1 interrupts the connection of the lamp current-controlled monitoring device IG0 assigned to the stop signal lamp to the line L1. The detector M1 detects the positive potential present at its input E1M1 via the feed lines LF1 and the negative potential present at its input E2M1 via the feed lines LH and thereupon sets its output to negative potential. From this, the evaluation logic recognizes the lighting of the signal lamp F1.

Neben der lampenstromgesteuerten Überwachungseinrichtung IG1 besitzt das der Fahrt-Signallampe F1 zugeordnete Schaltmodul Mo1 eine von der Lampenspannung gesteuerte Überwachungseinrichtung UG1, die aus der Lampenspannung eine Gleichspannung ableitet und diese auf die beiden Leitungen L0 und L1 zwischen den einzelnen Moduln Mo bis Mo2 schaltet. Die Polarität dieser Gleichspannung ist verschieden von der Polarität der Gleichspannungen, die von den lampenstromgesteuerten Überwachungseinrichtungen IG0 und IG1 an diese Leitungen angelegt werden können. Diese aus der Lampenspannung der jeweils angeschalteten Fahrt-Signallampe abgeleitete Gleichspannung liegt über die Leitungen L0 und L1 an einer der zur abgeschalteten Halt-Signallampe führenden Speiseleitungen LH und an einer der zu allen abgeschalteten Fahrt-Signallampen führenden Speiseleitungen und dient im Stellwerk zur eindeutigen Kennzeichnung der jeweils angeschalteten Signallampe bzw. Signallampen des Lichtsignals. In dem dargestellten Ausführungsbeispiel liegt der eine Eingang E1M2 des Melders M2 über die zur abgeschalteten Signallampe F2 führenden Speiseleitungen LF2 und die Leitung L1 am Minuspol der aktivierten Überwachungseinrichtung UG1, während der zweite Eingang E2M2 des Melders M2 über eine der zur abgeschalteten Halt-Signallampe führenden Speiseleitungen LH und die Leitung L0 am Pluspol der Überwachungseinrichtung UG1 der angesteuerten Fahrt-Signallampe F1 liegt. Der Melder M2 stellt daraufhin an seinem Ausgang positives Potential zur Verfügung; hieraus erkennt die nachgeordnete Bewertungseinrichtung den aktuellen Betriebszustand des zu überwachenden Lichtsignals. Bei entsprechend mehr Fahrt-Signallampen würden auch die diesen Signallampen zugeordneten Melder - solange die zugehörigen Signallampen dunkel sind - ausgangsseitig positives Potential führen, d.h. die Bewertungslogik würde aus der Polarität der Melderausgangssignale das Leuchten ausschließlich der Fahrt-Signallampe F1 erkennen.In addition to the lamp current-controlled monitoring device IG1, the switching module Mo1 assigned to the travel signal lamp F1 has a monitoring device UG1 controlled by the lamp voltage, which derives a direct voltage from the lamp voltage and switches this to the two lines L0 and L1 between the individual modules Mo to Mo2. The polarity of this DC voltage is different from the polarity of the DC voltages that can be applied to these lines by the lamp current-controlled monitoring devices IG0 and IG1. This DC voltage derived from the lamp voltage of the travel signal lamp switched on is connected via lines L0 and L1 to one of the feed lines LH leading to the switched off stop signal lamp and to one of the feed lines leading to all switched off travel signal lamps and is used in the signal box to uniquely identify the signal lamp or signal lamps of the light signal which are respectively switched on. In the exemplary embodiment shown, the one input E1M2 of the detector M2 is connected to the supply lines LF2 leading to the switched off signal lamp F2 and the line L1 to the negative pole of the activated monitoring device UG1, while the second input E2M2 of the detector M2 is connected to one of the supply lines LH leading to the switched off stop signal lamp and the line L0 at the positive pole of the monitoring device UG1 of the activated drive signal lamp F1. The detector M2 then provides positive potential at its output; from this the downstream evaluation device recognizes the current operating state of the light signal to be monitored. With correspondingly more drive signal lamps, the detectors assigned to these signal lamps would also have positive potential on the output side, as long as the associated signal lamps are dark, ie the evaluation logic would recognize the glow of the drive signal lamp F1 only from the polarity of the detector output signals.

Nachfolgend ist angenommen, daß die Fahrt-Signallampe F2 angeschaltet ist; die Fahrt-Signallampe F1 soll abgeschaltet sein. Bei einem ausreichend hohen Lampenstrom wechselt der der angeschalteten Fahrt-Signallampe F2 zugehörige lampenstromgesteuerte Schalter seine Schaltkontakte K2.1 und K2.2 und schaltet so eine Verbindung zwischen dem Pluspol der zugehörigen stromgesteuerten Überwachungseinrichtung IG2 und dem Eingang E1M2 des zugehörigen Melders M2; der Minuspol der Überwachungseinrichtung IG2 liegt über die Leitung L0 und eine der Leitungen LH der abgeschalteten Halt-Signallampe an dem anderen Eingang E2M2 des Melders M2; dieser Melder gibt daraufhin an seinem Ausgang negatives Potential ab. Eine von der an der Signallampe F2 liegenden Speisespannung gesteuerte Überwachungseinrichtung UG2 leitet aus der Speisespannung eine Gleichspannung ab und schaltet sie gegenphasig zu der aus dem Lampenstrom abgeleiteten Überwachungsgleichspannung auf die Leitungen L0 und L1. Von dort gelangt positives Potential über L0 und eine der zur abgeschalteten Halt-Signallampe führenden Speiseleitungen LH auf den einen Eingang E2M1 des Melders M1, während negatives Potential über die Leitung L1 und den inzwischen geschlossenen Kontakt K1.1 des Schalters im Schaltmodul Mo1 der abgeschalteten Fahrt-Signallampe F1 am anderen Eingang E1M1 des Melders M1 anliegt. Dieser Melder gibt an seinem Ausgang positives Potential ab. Auch die Melder weiterer in das Lichtsignal einbezogener Fahrt-Signallampen würden bei angeschalteter Fahrt-Signallampe F2 positives Ausgangspotential abgeben, solange die zugehörigen Signallampen selbst dunkel sind. Hieraus ermittelt die Bewertungseinrichtung den Betriebszustand des von ihr überwachten Lichtsignals.It is assumed below that the travel signal lamp F2 is switched on; the travel signal lamp F1 should be switched off. If the lamp current is sufficiently high, the lamp current-controlled switch associated with the connected drive signal lamp F2 changes its switch contacts K2.1 and K2.2 and thus switches a connection between the positive pole of the associated current-controlled monitoring device IG2 and the input E1M2 of the associated detector M2; the negative pole of the monitoring device IG2 is connected via line L0 and one of the lines LH of the switched-off stop signal lamp to the other input E2M2 of detector M2; this detector then outputs negative potential at its output. A monitoring device UG2, which is controlled by the supply voltage to the signal lamp F2, derives a direct voltage from the supply voltage and switches it in phase opposition to the direct monitoring voltage derived from the lamp current on lines L0 and L1. From there, positive potential passes via L0 and one of the supply lines LH leading to the deactivated stop signal lamp to one input E2M1 of detector M1, while negative potential via line L1 and the now closed contact K1.1 of the switch in the switching module Mo1 of the deactivated trip Signal lamp F1 is present at the other input E1M1 of detector M1. This detector emits positive potential at its output. The detectors of other travel signal lamps included in the light signal would also emit a positive output potential when the travel signal lamp F2 was switched on. as long as the associated signal lamps themselves are dark. From this, the evaluation device determines the operating state of the light signal monitored by it.

Bei angeschalteter Halt-Signallampe H veranlaßt die dieser zugeordnete lampenstromgesteuerte Überwachungseinrichtung IG0 über die Leitung L1 und die in Grundstellung befindlichen Kontakte K1.1 und K2.1 der lampenstromgesteuerten Schalter in den Schaltmoduln Mo1 und Mo2 der abgeschalteten Fahrt-Signallampen und eine der zur eigenen Signallampe führenden Speiseleitungen LH, daß sämtliche Melder M1, M2 ausgangsseitig positives Potential führen.When the stop signal lamp H is switched on, the lamp current-controlled monitoring device IG0 assigned to it initiates via line L1 and the contacts K1.1 and K2.1 in the basic position of the lamp current-controlled switches in the switching modules Mo1 and Mo2 of the switched-off drive signal lamps and one of its own signal lamp leading feed lines LH that all detectors M1, M2 have positive potential on the output side.

Werden gleichzeitig mehrere Fahrt-Signallampen angeschaltet, so veranlassen die zugehörigen stromgesteuerten Überwachungseinrichtungen, daß die diesen Fahrt-Signallampen im Stellwerk zugeordneten Melder negatives Ausgangspotential abgeben. Die Melder eventueller weiterer, nicht angeschalteter Fahrt-Signallampen führen ausgangsseitig positives Ausgangspotential; dieses Potential leiten die Melder aus der von den spannungsgesteuerten Überwachungseinrichtungen der angeschalteten Fahrt-Signallampen auf die Leitungen Lo und L1 gelegten Spannungen ab.If several travel signal lamps are switched on at the same time, the associated current-controlled monitoring devices cause the detectors assigned to these travel signal lamps in the signal box to emit negative output potential. The detectors of any other travel signal lamps that are not switched on have positive output potential on the output side; the detectors derive this potential from the voltages applied to the lines Lo and L1 by the voltage-controlled monitoring devices of the connected drive signal lamps.

Bei den Ausführungsbeispielen der Fig. 1 und 2 ist angenommen, daß an das Stellwerk lediglich Meldungen über das Leuchten bzw. Nichtleuchten der Signallampen zu übertragen sind. Wenn neben diesen Meldungen weitere Meldungen an das Stellwerk zu übertragen sind, beispielsweise ob in einer angeschalteten Signallampe der Haupt- oder der Nebenfaden leuchtet, so sind die in Fig. 1 und Fig. 2 schematisch dargestellten Schaltungen nach Maßgabe der in Fig. 3 ebenfalls schematisch dargestellten Schaltungsteile zu ergänzen. Diese Schaltungsteile beziehen sich auf das der Haltsignallampe H zugeordnete Schaltmodul Mo0 und das einer Fahrt-Signallampe F1 zugeordnete Schaltmodul Mo1. Diese zusätzlichen Schaltungsteile sind für alle Signallampen gleich; es können beliebig viele Schaltungsteile für beliebig viele Schaltmoduln über die die Schaltungsteile miteinander verbindenden Leitungen L2 bis L4 miteinander verbunden werden.In the embodiments of FIGS. 1 and 2 it is assumed that only messages about the lighting or non-lighting of the signal lamps are to be transmitted to the signal box. If, in addition to these messages, further messages are to be transmitted to the signal box, for example whether the main thread or the secondary thread lights up in a switched-on signal lamp, the circuits shown schematically in FIGS. 1 and 2 are also schematic in accordance with those in FIG. 3 to complete circuit parts shown. These circuit parts relate to the switching module Mo0 assigned to the stop signal lamp H and to the switching module Mo1 assigned to a travel signal lamp F1. These additional circuit parts are the same for all signal lamps; Any number of circuit parts for any number of switching modules can be connected to one another via the lines L2 to L4 connecting the circuit parts to one another.

Jedes zusätzliche Schaltungsteil beinhaltet einen Lampenfadenüberwacher LÜH bzw. LÜF1, dessen Ausgang potentialfrei ist, wenn und solange der Hauptfaden der zugehörigen Signallampe leuchtet und dessen Ausgang Potential einer bestimmten Wertigkeit führt, wenn der Nebenfaden der betreffenden Signallampe leuchtet. Dabei kann die Anordnung so getroffen sein, daß der Ausgang des Lampenfadenüberwachers nur dann potentialfrei ist, wenn der zugehörige Nebenfaden funktionsfähig ist; dies muß durch hier nicht näher zu erläuternde Prüfvorgänge ermittelt werden. Das Nichtvorhandensein von Ausgangspotential am Lampenfadenüberwacher führt über die Leitung LH dazu, daß die Schaltkontakte U1, U2 eines Umschalters U in die in der Zeichnung dargestellte Schaltstellung gelangen; beim Vorhandensein von Potential, d.h. beim Durchbrennen eines angeschalteten Hauptfadens oder bei fehlender Einschaltbereitschaft eines Lampennebenfadens wechseln die Schaltkontakte U1, U2 in die nicht dargestellte Schaltstellung.Each additional circuit part contains a lamp thread monitor LÜH or LÜF1, the output of which is potential-free if and as long as the main thread of the associated signal lamp is lit and whose output carries potential of a certain value if the auxiliary thread of the relevant signal lamp is lit. The arrangement can be such that the output of the lamp thread monitor is only potential-free if the associated secondary thread is functional; this must be determined by test procedures which are not to be explained in more detail here. The absence of output potential at the lamp thread monitor leads via the line LH to the fact that the switch contacts U1, U2 of a changeover switch U reach the switch position shown in the drawing; in the presence of potential, i.e. when a switched main thread burns out or a lamp auxiliary thread is not ready to be switched on, the switch contacts U1, U2 change to the switch position (not shown).

Jeder Signallampe ist ferner eine von der anliegenden Lampenspannung gesteuerte Überwachungseinrichtung UG0.1 bzw. UG1.1 zugeordnet, welche aus der anliegenden Lampenspannung eine Gleichspannung ableitet und diese in jeweils gleicher Phasenlage auf zwei die Schaltungsteile miteinander verbindende Leitungen L2 und L3 legt. Bei dem Ausführungsbeispiel der Fig. 3 ist angenommen, daß die Halt-Signallampe H angeschaltet ist und leuchtet. Dabei hat der Lampenfadenüberwacher LÜH die Schaltkontakte U1, U2 über die Leitung L4 in die dargestellte Schaltstellung gesteuert. In dieser Schaltstellung verbindet der Schaltkontakt U1 den negativen Pol der Überwachungseinrichtung UG0.1 mit einer der zur Halt-Signallampe führenden Speiseleitungen LH, während der andere Schaltkontakt U2 den positiven Pol dieser Überwachungseinrichtung an eine gesonderte Verbindung V zum Stellwerk legt. Diese gesonderte Verbindung kann durch Masseanschlüsse im Stellwerk und in der Außenanlage dargestellt sein, wie es zu diesem Zweck z.B. aus der DE-PS 35 16 612 bekannt ist; dort geht es jedoch ausschließlich um die Überwachung der Haupt/Nebenfäden von insgesamt nur zwei Signallampen.
Bei der angenommenen Schaltstellung der Schaltkontakte und dem angenommenen Betriebszustand der Halt-Signallampe gibt der im Stellwerk angeordnete Melder M an seinem Ausgang Potential einer bestimmten Wertigkeit ab, aus der die nachgeordnete Bewertungseinrichtung den ordnungsgerechten Betriebszustand der angeschalteten Halt-Signallampe erkennt. Brennt der Hauptfaden der Halt-Signallampe durch und wird daraufhin durch nicht dargestellte Umschalteinrichtungen der Nebenfaden der Signallampe angeschaltet, so steuert der Lampenfadenüberwacher LÜH über die Leitung L4 die Schaltkontakte U1, U2 in die andere Schaltstellung. Der Pluspol der spannungsgesteuerten Überwachungseinrichtung UGO.1 liegt nun über den Schaltkontakt U1 an einer der zur Halt-Signallampe führenden Speiseleitungen LH und der negative Pol der Überwachungseinrichtung ist über den Schaltkontakt U2 mit der gesonderten Verbindung V verbunden. Der Melder M wird nun gegenphasig zu der zuvor angenommenen Anschaltung des Hauptfadens der Halt-Signallampe angesteuert und wechselt das an seinem Ausgang abgreifbare Potential. Ist anstelle der Halt-Signallampe H die Fahrt-Signallampe F1 angeschaltet, so veranlaßt der zugehörige Lampenfadenüberwacher LÜF1 die Steuerung der beiden Schaltkontakte U1, U2 in gleicher Weise wie zuvor der der Halt-Signallampe. Das gleiche gilt für die von der Versorgungsspannung der Fahrt-Signallampe F1 gesteuerte Uberwachungseinrichtung UG1.1, die bei angeschalteter Signallampe eine Gleichspannung auf die Leitungen L2 und L3 schaltet. Leuchtet der Hauptfaden der Fahrt-Signallampe, so gibt der Melder M das gleiche Potential aus wie bei angeschaltetem Hauptfaden der Halt-Signallampe. Bei angeschaltetem Nebenfaden werden die Schaltkontakte U1, U2 über die Leitung L4 in die andere Schaltstellung gesteuert und der Melder M gibt an seinem Ausgang Potential der anderen Wertigkeit ab. Wenn neben der Kennzeichnung der jeweils angeschalteten Signallampe auch eine Kennzeichnung des jeweils angeschalteten Lampenfadens erfolgen soll, so sind die Schaltungen nach Fig. 1 und 2 um die in Fig. 3 dargestellten Schaltungsteile zu ergänzen.
Each signal lamp is also assigned a monitoring device UG0.1 or UG1.1 which is controlled by the lamp voltage present and which derives a DC voltage from the lamp voltage present and places this in the same phase on two lines L2 and L3 connecting the circuit parts to one another. In the exemplary embodiment in FIG. 3, it is assumed that the stop signal lamp H is switched on and lights up. The lamp thread monitor LÜH has controlled the switch contacts U1, U2 via the line L4 in the switch position shown. In this switching position, the switching contact U1 connects the negative pole of the monitoring device UG0.1 to one of the feed lines LH leading to the stop signal lamp, while the other switching contact U2 connects the positive pole of this monitoring device to a separate connection V to the signal box. This separate connection can be represented by ground connections in the signal box and in the outdoor area, as is known for this purpose, for example from DE-PS 35 16 612; there, however, it is only a question of monitoring the main / secondary threads of a total of only two signal lamps.
With the assumed switching position of the switching contacts and the assumed operating state of the stop signal lamp, the detector M arranged in the signal box outputs potential of a certain value at its output, from which the downstream evaluation device recognizes the correct operating state of the switched on stop signal lamp. If the main thread of the stop signal lamp burns out and the secondary thread of the signal lamp is then switched on by switching devices (not shown), the lamp thread monitor LÜH controls the switching contacts U1, U2 into the other switching position via line L4. The positive pole of the voltage-controlled monitoring device UGO.1 is now connected via the switch contact U1 to one of the feed lines LH leading to the stop signal lamp, and the negative pole of the monitoring device is connected to the separate connection V via the switch contact U2. The detector M is now driven in phase opposition to the previously assumed connection of the main thread of the stop signal lamp and changes the potential that can be tapped at its output. If the drive signal lamp F1 is switched on instead of the stop signal lamp H, the associated lamp thread monitor LÜF1 controls the two switch contacts U1, U2 in the same way as that of the stop signal lamp. The same applies to the monitoring device UG1.1 which is controlled by the supply voltage of the travel signal lamp F1 and which switches a DC voltage to the lines L2 and L3 when the signal lamp is switched on. If the main thread of the drive signal lamp lights up, detector M outputs the same potential as when the main thread of the stop signal lamp is switched on. When the secondary thread is switched on, the switching contacts U1, U2 are controlled into the other switching position via the line L4 and the detector M outputs potential of the other value at its output. If, in addition to the identification of the respectively switched on signal lamp, the identification of the respectively switched on lamp filament is also to take place, the circuits according to FIGS. 1 and 2 are to be supplemented by the circuit parts shown in FIG.

Es kann von Vorteil sein, wenn die von der Versorgungsspannung gesteuerte Überwachungseinrichtung UGO.1 der Halt-Signallampe die von ihr zur Verfügung gestellte Überwachungsgleichspannung gegenphasig zu der von den entsprechenden Überwachungseinrichtungen UG1.1 der Fahrt-Signallampen geschalteten Gleichspannungen auf die Leitungen L2 und L3 legt. In diesem Falle führt jeder Wechsel von Halt auf Fahrt und umgekehrt (bei intakten Hauptfäden der beiden Signallampen) zu einem Wechsel im Ausgangspotential des Melders M und damit zu einer Funktionskontrolle dieses Melders. Die Bewertung des Ausgangspotentials des Melders ist dann abhängig zu machen von dem durch die Schaltungen nach Fig. 1 und 2 detektierten Ist-Betriebszustand der angeschalteten Signallampe oder von dem durch den Schaltzustand der Steller gegebenen Soll-Betriebszustand dieser Lampe.It can be advantageous if the monitoring device UGO.1 of the stop signal lamp, which is controlled by the supply voltage, uses the monitoring DC voltage it provides in phase opposition to the DC voltages switched by the corresponding monitoring devices UG1.1 of the travel signal lamps on lines L2 and L3. In this case, each change from stop to travel and vice versa (with the main threads of the two signal lamps intact) leads to a change in the output potential of detector M and thus to a functional check of this detector. The evaluation of the output potential of the detector is then to be made dependent on the actual operating state of the switched-on signal lamp detected by the circuits according to FIGS. 1 and 2 or on the target operating state of this lamp given by the switching state of the actuators.

Fig. 4 zeigt eine technische Realisierung der erfindungsgemäßen Schaltung anhand eines Lichtsignals mit einer Halt-Signallampe H und einer Fahrt-Signallampe F1; das Lichtsignal kann beliebig viele Fahrt-Signallampen beinhalten; es sind dann entsprechend viele Schaltmoduln über die zugehörigen Verbindungsleitungen L0 bis L4 aneinanderzureihen. Jedes Schaltmodul enthält die Schaltmittel, die am Lichtsignal erforderlich sind, um den jeweils angeschalteten Signalbegriff an das Stellwerk zu melden und jedes Schaltmodul enthält darüber hinaus die Schaltmittel, die im Stellwerk erkennen lassen, ob der jeweils angeschaltete Signalbegriff über den Haupt- oder den Nebenfaden zur Darstellung gelangt, bzw. ob die Nebenfäden aller angeschalteten, über ihre Hauptfäden betriebenen Signallampen funktionsfähig sind. Für die in Fig. 4 im einzelnen dargestellten Elemente wurden die aus den Fig. 1 bis 3 bekannten Bezugszeichen weiterverwendet.FIG. 4 shows a technical implementation of the circuit according to the invention using a light signal with a stop signal lamp H and a drive signal lamp F1; the light signal can contain any number of drive signal lamps; a corresponding number of switching modules are then to be strung together via the associated connecting lines L0 to L4. Each switching module contains the switching means that are required on the light signal in order to report the signal signal that is currently switched on to the signal box, and each switching module also contains the switching means that indicate in the signal box whether the signal signal that is switched on is via the main or secondary thread Representation arrives, or whether the auxiliary threads of all connected signal lamps operated via their main threads are functional. The reference symbols known from FIGS. 1 to 3 were used further for the elements shown in detail in FIG. 4.

Die Speisung der jeweils angeschalteten Signallampen erfolgt im Stellwerk über Trenntransformatoren TH1 bzw. TF1.1, die primärseitig über Anschaltkontakte S0, S1 an Wechselspannung liegen. Die Sekundärwicklungen dieser Trenntransformatoren sind über die Speiseleitungen LH bzw. LF1 mit den Primärwicklungen von in der Nähe der Signallampen angeordneten Trenntransformatoren TH2 bzw. TF1.2 verbunden. Diese Trenntransformatoren sind Bestandteile der den einzelnen Signallampen zugeordneten Schaltmoduln Mo0 bzw. Mo1. An den Sekundärwicklungen der letztgenannten Trenntransformatoren liegen die zu schaltenden Signallampen H bzw. F1. Jedes Schaltmodul weist eine speisestromgesteuerte Überwachungseinrichtung IG0 bzw. IG1 auf, die aus einem primärseitig in den Lampenstromkreis geschalteten Stromwandler und einem sekundärseitigen Zweiweggleichrichter besteht. Der Pluspol der der Halt-Signallampe H zugeordneten Überwachungseinrichtung IG0 ist an die Leitung L0, der negative Pol an die Leitung L1 angeschlossen. Bei den den Fahrt-Signallampen zugeordneten stromgesteuerten Überwachungseinrichtungen IG1 ist dies genau umgekehrt der Fall; dort ist der negative Pol des an einer vom Lampenstrom abhängigen Spannung liegenden Gleichrichters mit der Leitung L0 und der positive Pol über einen bei angeschalteter, leuchtender Signallampe geschlossenen Kontakt K1.1 eines stromgesteuerten Schalters K1 an die Leitung L1 angelegt. Ferner weist jedes Schaltmodul eine von der anliegenden Lampenspannung gesteuerte Überwachungseinrichtung UG0.1 bzw. UG1.1 auf. Bei jeweils angeschalteter Signallampe speisen diese Überwachungseinrichtungen in vorgegebener Polarität auf die Leitungen L2 und L3 ein. Diese Überwachungseinrichtungen dienen der Bereitstellung der zum Melden des jeweils angeschalteten Haupt- bzw. Nebenfadens erforderlichen Spannung über den Umschalter U an den Melder M. Jeder Fahrt-Signallampe ist ferner eine von der jeweils anliegenden Speisespannung gesteuerte Überwachungseinrichtung UG1.2 zugeordnet, die ebenfalls aus einer Sekundärwicklung des zugehörigen Trenntransformators TF1.2 und einem Zweiweg-Gleichrichter gebildet wird. Dieser Zweiweg-Gleichrichter speist auf die Leitungen L0 und L1 aus und zwar in gleicher Polarität wie die stromgesteuerte Überwachungseinrichtung IG0 der Halt-Signallampe. Die den Fahrt-Signallampen zugeordneten spannungsabhängigen Überwachungseinrichtungen UG1.2 dienen dazu, bei angeschalteter Signallampe über die Leitungen L0 und L1 Spannung an die Schaltmoduln weiterer nicht angeschalteter Fahrt-Signallampen zu legen und so die zugehörigen Melder in vorgegebener Weise zu beeinflussen. Im Schaltmodul der jeweils angeschalteten Fahrt-Signallampe bewirkt der Kontakt K1.2 des beim Fließen eines ausreichenden Lampenstromes ansprechenden Schalters K1 die Entkopplung der Leitung L1 von der stromgesteuerten Überwachungseinrichtung IG1; der Kontakt des Schalters K1 veranlaßt das Aufschalten von positivem Potential auf die zum Melder M1 führenden Speiseleitungen. Der Melder M1 nimmt dabei einen Schaltzustand ein, der verschieden ist von dem der übrigen Fahrt-Signallampen.The signal lamps are switched on in the signal box via isolating transformers TH1 and TF1.1, which are connected to AC voltage on the primary side via switch contacts S0, S1. The secondary windings of these isolating transformers are connected via the feed lines LH and LF1 to the primary windings of isolating transformers TH2 and TF1.2 arranged in the vicinity of the signal lamps. These isolating transformers are components of the switching modules Mo0 and Mo1 assigned to the individual signal lamps. The signal lamps H to be switched are located on the secondary windings of the latter isolating transformers or F1. Each switching module has a feed current-controlled monitoring device IG0 or IG1, which consists of a current transformer connected to the lamp circuit on the primary side and a two-way rectifier on the secondary side. The positive pole of the monitoring device IG0 assigned to the stop signal lamp H is connected to the line L0, the negative pole to the line L1. In the case of the current-controlled monitoring devices IG1 assigned to the drive signal lamps, this is exactly the opposite; there, the negative pole of the rectifier connected to a voltage dependent on the lamp current is connected to line L0 and the positive pole is connected to line L1 via a contact K1.1 of a current-controlled switch K1 which is closed when the signal lamp is switched on and lights up. Furthermore, each switching module has a monitoring device UG0.1 or UG1.1 controlled by the applied lamp voltage. When the signal lamp is switched on, these monitoring devices feed in the specified polarity onto the lines L2 and L3. These monitoring devices are used to provide the voltage required to report the respectively connected main or secondary thread to the detector M via the changeover switch U. Each travel signal lamp is also assigned a monitoring device UG1.2 which is controlled by the supply voltage present and which also consists of a Secondary winding of the associated isolating transformer TF1.2 and a two-way rectifier is formed. This two-way rectifier feeds on the lines L0 and L1 and in the same polarity as the current-controlled monitoring device IG0 of the stop signal lamp. The voltage-dependent monitoring devices UG1.2 assigned to the travel signal lamps are used to apply voltage to the switching modules of further non-switched travel signal lamps via lines L0 and L1 when the signal lamp is switched on, and thus to influence the associated detectors in a predetermined manner. In the switching module of the travel signal lamp that is switched on, the contact K1.2 of the switch K1, which responds when a sufficient lamp current flows, decouples the line L1 from the current-controlled monitoring device IG1; the contact of switch K1 causes positive potential to be applied to the feed lines leading to detector M1. The detector M1 assumes a switching state which is different from that of the other drive signal lamps.

Anstelle von Überwacherrelais, die beim Fließen eines ausreichend hohen Lampenstromes ansprechen und Schaltkontakte betätigen, ist es auch möglich, zum Schalten der Überwachungsgleichspannungen elektronische Schalter zu verwenden. Eine Ausführungsform eines derartig ausgebildeten Schaltmoduls Mo1* ist in Fig. 5 dargestellt.Instead of monitoring relays that respond when a sufficiently high lamp current flows and actuate switching contacts, it is also possible to use electronic switches to switch the DC monitoring voltages. An embodiment of such a switching module Mo1 * is shown in FIG. 5.

Anstelle eines elektromechanischen Relais zum Detektieren eines ausreichend hohen Speisestromes und zum Aufschalten eines entsprechenden Überwachungspotentials auf die Leitungen L0 und L1 ist ein als Feldeffekttransistor ausgebildeter elektronischer Schalter T1 vorgesehen. Dieser Schalter liegt mit seiner Source an der Leitung L1 und mit seiner Drain an der Leitung L0. Sein Gate wird dann, wenn die stromgesteuerte Überwachungseinrichtung IG1 eine ausreichende Überwachungsspannung zur Verfügung stellt, positiv gegenüber der Source und schaltet über die Drain-Source-Strecke eine Verbindung zwischen der ersten Leitung L0 und dem negativen Pol der stromgesteuerten Überwachungseinrichtung IG1. Das auf der ersten Leitung L0 anstehende positive Potential gelangt dorthin vom Pluspol der lampenstromgesteuerten Überwachungseinrichtung IG1 über die Primärwicklung des Trenntransformators TF1.2, die Speiseleitungen LF1, die Sekundärwicklung des stellwerksseitigen Trenntransformators TF1.1 (in Fig. 4), den Melder M1 (in Fig. 4), die Sekundärwicklung des stellwerksseitigen Trenntransformators TH1 (in Fig. 4) für die Halt-Signallampe, die Speiseleitungen zu dieser Lampe und die Primärwicklung des die Halt-Signallampe speisenden Trenntransformators TH2 (in Fig. 4).Instead of an electromechanical relay for detecting a sufficiently high feed current and for applying a corresponding monitoring potential to lines L0 and L1, an electronic switch T1 designed as a field effect transistor is provided. This switch is connected to line L1 with its source and to line L0 with its drain. When the current-controlled monitoring device IG1 provides a sufficient monitoring voltage, its gate becomes positive with respect to the source and switches a connection between the first line L0 and the negative pole of the current-controlled monitoring device IG1 via the drain-source path. The positive potential present on the first line L0 goes there from the positive pole of the lamp current-controlled monitoring device IG1 via the primary winding of the isolating transformer TF1.2, the feed lines LF1, the secondary winding of the interlocking transformer TF1.1 (in FIG. 4), the detector M1 (in Fig. 4), the secondary winding of the interlocking-side isolating transformer TH1 (in Fig. 4) for the stop signal lamp, the feed lines to this lamp and the primary winding of the isolating transformer TH2 feeding the stop signal lamp (in Fig. 4).

Bei einem zu niedrigen Speisestrom, insbesondere bei abgeschalteter Fahrt-Signallampe, bleibt die Drain-Source-Strecke des zugehörigen elektronischen Schalters hochohmig. Die bei angeschalteter Halt-Signallampe an der zugehörigen lampenstromgesteuerten überwachungseinrichtung IG0 (in Fig. 4) abgreifbare Überwachungsgleichspannung treibt dann einen Überwachungsgleichstrom über den Melder M1, der dort zur Ausgabe von positivem Ausgangspotential führt. Der Überwachungsstromkreis schließt sich dabei vom Pluspol der lampenstromgesteuerten Überwachungseinrichtung IGO (in Fig. 4) der Halt-Signallampe, die Trenntransformatoren und die Speiseleitungen der Halt-Signallampe, den Melder M1, die Trenntransformatoren und die Speiseleitungen der Fahrt-Signallampe F1, einen Widerstand R und die Leitung L1 zum Minuspol der Uberwachungseinrichtung IGO. Der Widerstand R ist dabei sehr viel niederohmiger als der Innenwiderstand des Melders M1, so daß dort eine genügend hohe Spannung zum Schalten des Melders zur Verfügung steht. Der elektronische Schalter T1 bleibt gesperrt, weil wegen des hohen Innenwiderstandes des Melders M1 am Widerstand R kein zum Durchsteuern des Schalters ausreichender Spannungsabfall auftritt.If the supply current is too low, in particular when the drive signal lamp is switched off, the drain-source path of the associated electronic switch remains high-resistance. The monitoring DC voltage which can be tapped off when the stop signal lamp is switched on at the associated lamp current-controlled monitoring device IG0 (in FIG. 4) then drives a monitoring DC current via detector M1, which leads to the output of positive output potential. The monitoring circuit closes from the positive pole of the lamp current-controlled monitoring device IGO (in FIG. 4) of the stop signal lamp, the isolating transformers and the feed lines of the stop signal lamp, the detector M1, the isolating transformers and the feed lines of the drive signal lamp F1, a resistor R and the line L1 to the negative pole of the monitoring device IGO. The resistance R is much lower than the internal resistance of the detector M1, so that there is a sufficiently high voltage for switching the detector. The electronic switch T1 remains blocked because, owing to the high internal resistance of the detector M1 at the resistor R, there is no voltage drop sufficient to control the switch.

Ist statt der Fahrt-Signallampe F1 eine andere Fahrt-Signallampe, z.B. die Fahrt-Signallampe F2 (in Fig. 2), angeschaltet, so wird der Melder M1 der nicht angeschalteten Fahrt-Signallampe F1 in gleicher Weise wie bei angeschalteter Halt-Signallampe durch eine entsprechende Uberwachungsgleichspannung gesteuert, die von der lampenspannungsgespeisten Überwachungseinrichtung UG2 (in Fig. 2) der angeschalteten Fahrt-Signallampe F2 an die Leitungen L0 und L1 angelegt wird. Es bildet sich dabei ein Überwachungsstromkreis aus vom Pluspol der Uberwachungseinrichtung UG2 über die Leitung L0 zur Halt-Signallampe, von dort über die zugehörigen Trenntransformatoren und die Speiseleitungen der Halt-Signallampe zum Melder M1 und von dort über die Trenntransformatoren und die Speiseleitungen der abgeschalteten Fahrt-Sinallampe F1, den Widerstand R und die Leitung L1 zum Minuspol der Überwachungseinrichtung UG2 der angeschalteten Fahrt-Signallampe F2. Der Melder M1 führt dabei ausgangsseitig positives Potential. Der Melder M2 der angeschalteten Fahrt-Signallampe F2 hingegen führt ausgangsseitig negatives Potential; der Überwachungsstromkreis für diesen Melder führt vom Pluspol der zugehörigen stromgesteuerten Überwachungseinrichtung IG2 (in Fig. 2) über die Trenntransformatoren und die Speiseleitungen der Fahrt-Signallampe F2 zum Melder M2 und von dort über die Trenntransformatoren und die Speiseleitungen der Halt-Signallampe sowie die Leitung L0 und die Drain-Source-Strecke des zugehörigen elektronischen Schalters auf den Minuspol der stromgesteuerten Überwachungseinrichtung IG2.If, instead of the travel signal lamp F1, another travel signal lamp, for example the travel signal lamp F2 (in FIG. 2), is switched on, the detector M1 of the non-switched on travel signal lamp F1 is switched on in the same way as when the stop signal lamp is switched on a corresponding DC monitoring voltage is controlled, which is applied to the lines L0 and L1 by the lamp voltage-fed monitoring device UG2 (in FIG. 2) of the connected drive signal lamp F2. A monitoring circuit is formed from the positive pole of the monitoring device UG2 via the line L0 to the stop signal lamp, from there via the associated isolating transformers and the feed lines of the stop signal lamp to the detector M1 and from there via the isolating transformers and the feed lines of the switched off trip Sinalamp F1, the resistor R and the line L1 to the negative pole of the monitoring device UG2 of the connected drive signal lamp F2. The detector M1 carries positive potential on the output side. The detector M2 of the connected drive signal lamp F2, on the other hand, has negative potential on the output side; the monitoring circuit for this detector leads from the positive pole of the associated current-controlled monitoring device IG2 (in FIG. 2) via the isolating transformers and the feed lines of the travel signal lamp F2 to the detector M2 and from there via the isolating transformers and Feed lines of the stop signal lamp and line L0 and the drain-source path of the associated electronic switch to the negative pole of the current-controlled monitoring device IG2.

Anstelle von Meldern der in den Ausführungsbeispielen verwendeten Art, die beim Leuchten der zugehörigen Lampe ausgangsseitig negatives Potential führen, können selbstverständlich auch solche Melder verwendet sein, die dann positives Ausgangspotential führen; es können vorteilhaft auch jeweils zwei Melder verwendet sein. Wichtig ist nur, daß die Melder abhängig von der Richtung des über sie oder einen ihren Eingängen parallelgeschalteten Widerstand fließenden Stromes positives oder negatives Ausgangspotential und beim Fehlen eines solchen Stromes ein davon verschiedenes Ausgangspotential bzw. das Ausgangspotential null führen und daß die Bewertungslogik über den verwendeten Meldertyp unterrichtet ist.Instead of detectors of the type used in the exemplary embodiments, which have a negative potential on the output side when the associated lamp lights up, it is of course also possible to use detectors which then have a positive output potential; two detectors can also be used advantageously. It is only important that the detectors have a positive or negative output potential depending on the direction of the current flowing through them or a resistor connected in parallel with their inputs and, in the absence of such a current, a different output potential or zero output potential and that the evaluation logic is based on the detector type used is taught.

Die Erfindung ist nicht beschränkt auf Lichtsignale mit nur einer einzigen Halt-Signallampe. Sind mehrere getrennt oder gemeinsam anschaltbare Halt-Signallampen vorhanden, so schließen sich die Stromkreise für die Melder in vorstehend beschriebener Weise statt über die Speiseleitungen nur einer Halt-Signallampe über die Speiseleitungen mehrerer Halt-Signallampen.The invention is not limited to light signals with only a single stop signal lamp. If there are several stop signal lamps that can be connected separately or together, the circuits for the detectors close in the manner described above, instead of only one stop signal lamp via the feed lines via the feed lines of several stop signal lamps.

Claims (11)

  1. Circuit for monitoring a light signal,
    supplied with alternating current, from a remote supply and monitoring point by means of direct voltages, which are applied by monitors arranged in the vicinity of the signal lamps to a supply line leading to the respectively connected signal lamp and to a supply line leading to a disconnected signal lamp or to a supply line leading to the stop signal lamp and to a separate connection to the controlling unit, and the polarity of which direct voltages indicates the operational state of the monitored signal lamp, which state is detected in each case by the monitor,
    characterized in that there is associated with each light signal a number of switching modules (Mo1, Mo1) arranged in the vicinity of the signal lamps and connected to each other by way of lines (L0, L1), which number corresponds to the number of signal lamps (H, F1 in Figure 1) of the light signal,
    in that the switching modules divert from the lamp current flowing by way of the respectively associated signal lamp a first direct voltage and apply the latter in respectively equal polarity to a supply line (LH, LF1) leading to the associated signal lamp and - for the travel signal lamps (F1) - by way of a first line (L0) to a supply line (LH) leading to the stop signal lamps (H) or - for the stop signal lamps (H) - by way of a second line (L1) to a supply line (LF1) leading to the travel signal lamps (F1), whereby the switching modules (M1) associated with the travel signal lamps (F1) have in each case a switch (K1.1, K1.2) controlled by lamp current, which switch, with too low or lacking lamp current, breaks the connection between its monitoring device (IG1) forming the first direct voltage and the supply lines (LH) of the stop signal lamp (H) and which, with an adequately high supply current, restores this connection and breaks the connection between the supply line (LF1) of the travel signal lamp (F1) and the monitoring devices (IG0) diverting the first direct voltage in the switching module (Mo0) of the stop signal lamps (H),
    in that in the controlling unit for each travel signal lamp (F1) at least one indicator (M1) is provided, which is connected by its one pole to a supply line (LF1) leading to the relevant signal lamp (F1) and to a supply line (LH) leading to the stop signal lamps (H) and in that the indicators (M1), with the presence of a monitoring direct voltage applied with adequate level to their inputs, supply an output potential of an evaluation logic unit, which characterizes the phase angle of this voltage.
  2. Circuit according to claim 1, characterized in that in each case two series-connected indicators are provided, one of which emits output potential with the one phase angle of the applied monitoring direct voltage and the other emits output potential with the other phase angle of the applied monitoring direct voltage.
  3. Circuit according to claim 1, characterized in that with light signals with several travel signal lamps (F1, F2 in Figure 2) the switching modules (Mo1, Mo2) associated therewith divert a direct voltage from the respectively applied supply voltage and apply this direct voltage in co-phasal manner with the first direct voltage of the switching modules (M0) associated with the stop signal lamps (H) to the first and second line (L0, L1).
  4. Circuit according to claim 1, 2 or 3,
    characterized in that the supply of the signal lamps (H, F1 in Figure 4) takes place by way of isolating transformers (TH1, TH2; TF1.1, TF1.2),
    in that the switching modules (Mo0) associated with the stop signal lamps (H) apply the first direct voltage diverted from the lamp current to the primary centre tap of the isolating transformer (TH2) supplying the relevant stop signal lamp and by way of the second line (L1) to the primary centre tap of the isolating transformers (TF1.2) supplying the travel signal lamps (F1),
    in that the switching modules (Mo1) associated with the travel signal lamps (F1) apply the first direct voltages diverted from the lamp current to the primary centre tap of the isolating transformer (TF1.2) supplying the relevant travel signal lamp (F1) and by way of the first line (L0) to the primary centre taps of the isolating transformers (TH2) supplying the stop signal lamps (H) and
    in that in the controlling unit the indicators (M1) are connected to the secondary centre tap of an isolating transformer (TF1.1) feeding out onto the respectively associated travel signal lamp (F1) and to the secondary centre taps of the isolating transformers (TH1) feeding out onto the stop signal lamps (H).
  5. Circuit according to claim 1, characterized in that the switch (K1 in Figure 4) controlled by lamp current is constructed as a relay, the contacts (K1.1, K1.2) of which, with an adequately high lamp current, switch the connection from the supply circuit (LF1) of the respectively associated travel signal lamp (F1) to the monitoring devices (IG1) of this travel signal lamp (F1) diverting the first direct voltage and, with a lamp current which is not high enough, switch the connection from the supply circuit (LF1) of the respectively associated travel signal lamp (F1) by way of the second line (L1) to the monitoring devices (IGO) of the stop signal lamps (H) forming the first direct voltage.
  6. Circuit according to claim 1, characterized in that the switch controlled by lamp current is constructed as a field effect transistor (T1 in Figure 5), which is connected at its source to the second line (L1) and by its drain to the first line (L0) and the gate of which lies by way of a voltage divider parallel to a resistor (R) which is of low resistance in relation to the inner resistance of the associated indicator at the terminals of the monitoring device (IG1) of the relevant travel signal lamp (F1) diverting the first direct voltage.
  7. Circuit according to claim 1, characterized in that the switching modules (Mo0, Mo1 in Figure 3) form a further direct voltage from the respectively applied lamp voltage,
    in that the plus and minus poles of the monitoring devices (UG0.1, UG1.1) of all switching modules (Mo0, Mo1) forming this direct voltage are connected to each other and are guided to the two inputs of a changeover switch (U1), the output of which is connected to the supply line (LH) of a selected signal lamp (H),
    in that a second switch (U2) inverting the potentials supplied to the first changeover switch (U1) is provided, the output of which is applied to a separate connection (V) to the controlling unit,
    in that the two changeover switches can be controlled together, dependent on the output signal of a main/secondary filament monitor (LÜH, LÜF1) of the respectively connected signal lamp (H, F1) or signal lamps into one or other of the switching positions and
    in that in the controlling unit a separate indicator (M) is provided which is connected to the separate connection (V) and to one of the supply lines (LH) leading to the selected signal lamp (H).
  8. Circuit according to claim 7, characterized in that the main/secondary filament monitor (LÜH) of the stop signal lamps (H) with operational states of the associated signal lamps which correspond with each other emit an output signal which differs from the main/secondary filament monitors (LÜF1) of the travel signal lamps (F1).
  9. Circuit according to claim 7 or 8, characterized in that the main/secondary filament monitors (LÜH; LÜF1) of the signal lamps (H, F1) are supplied from the associated lamp circuit and are connected in parallel with each other on the output side, in that the control inputs of the two changeover switches with correct operational state of the signal lamps (H, F1) monitored by the main/secondary filament changeover switches (LÜH, LÜF1) are potential-free or lie on a first potential and in that the main/secondary filament changeover switch of each of the signal lamps, upon detection of a lamp disturbance, draws the control inputs of the two changeover switches (U1, U2) to the respective other potential.
  10. Circuit according to claim 7, 8 or 9, characterized in that the main/secondary filament monitors, in addition to the main filament, also monitor the secondary filament of the relevant signal lamp and in that they make the output of an output potential which characterizes the correct operational state of the associated connected signal lamp dependent both on the presence of an intact main filament and an intact secondary filament of this signal lamp.
  11. Circuit according to claim 1 or 6, characterized in that the monitoring devices (IG1, UG1.1, UG1.2) diverting the direct voltages are constructed as two-way rectifiers connected to the secondary windings of current or voltage transformers.
EP90123332A 1989-12-14 1990-12-05 Circuit for monitoring an alternating current supplied light signal by direct voltages Expired - Lifetime EP0432626B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3941329 1989-12-14
DE3941329A DE3941329A1 (en) 1989-12-14 1989-12-14 CIRCUIT FOR MONITORING AN AC POWERED LIGHT SIGNAL BY MEANS OF DC VOLTAGE

Publications (3)

Publication Number Publication Date
EP0432626A2 EP0432626A2 (en) 1991-06-19
EP0432626A3 EP0432626A3 (en) 1992-12-16
EP0432626B1 true EP0432626B1 (en) 1996-03-27

Family

ID=6395471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123332A Expired - Lifetime EP0432626B1 (en) 1989-12-14 1990-12-05 Circuit for monitoring an alternating current supplied light signal by direct voltages

Country Status (6)

Country Link
EP (1) EP0432626B1 (en)
AT (1) ATE136143T1 (en)
DE (2) DE3941329A1 (en)
DK (1) DK0432626T3 (en)
ES (1) ES2084638T3 (en)
FI (1) FI100087B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516612A1 (en) * 1985-05-08 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Circuit for remote monitoring of a light signal
DE9012640U1 (en) * 1989-12-14 1990-11-08 Siemens Ag, 8000 Muenchen, De

Also Published As

Publication number Publication date
FI100087B (en) 1997-09-15
EP0432626A2 (en) 1991-06-19
EP0432626A3 (en) 1992-12-16
ATE136143T1 (en) 1996-04-15
DE3941329A1 (en) 1991-06-20
FI906153A (en) 1991-06-15
DK0432626T3 (en) 1996-08-12
FI906153A0 (en) 1990-12-13
DE59010242D1 (en) 1996-05-02
ES2084638T3 (en) 1996-05-16

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