EP0256483B1 - Traffic guidance and information system - Google Patents

Traffic guidance and information system Download PDF

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Publication number
EP0256483B1
EP0256483B1 EP87111565A EP87111565A EP0256483B1 EP 0256483 B1 EP0256483 B1 EP 0256483B1 EP 87111565 A EP87111565 A EP 87111565A EP 87111565 A EP87111565 A EP 87111565A EP 0256483 B1 EP0256483 B1 EP 0256483B1
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EP
European Patent Office
Prior art keywords
transformer
traffic
vsg
signalling
control device
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EP87111565A
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German (de)
French (fr)
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EP0256483A1 (en
Inventor
Reinhard Kappeller
Romuald Dipl.-Ing. Von Tomkewitsch
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Siemens AG
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Siemens AG
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element

Definitions

  • the invention relates to a traffic control and information system in a road network with stationary beacons arranged on the roads, which cyclically transmit guidance information due to a mutual data transmission with all passing vehicles equipped with a corresponding receiver / transmitter and processing device, the beacons of Infrared heads with transmitters and receivers, which are arranged on existing signal masts of a traffic signal system, and are formed by beacon electronics, which are arranged in the cabinet of an associated traffic switching device.
  • control information for reaching the destinations that can be selected from their location is transmitted to the vehicles and traffic data, such as travel time per route section, reported by the vehicles to the control centers.
  • traffic data such as travel time per route section
  • the infrastructure for such a traffic control and information system should be created with as little effort as possible.
  • existing traffic signal computers can be used for traffic signal system controls.
  • the traffic control computer for example, supplies the necessary information to beacon electronics which are arranged in the control cabinet of the traffic switching device. For the transfer of information between the infrared head and the wired to the infrared head.
  • the object of the invention is therefore to provide a device for transmitting the data and the required supply voltage for a traffic control and information system described at the beginning, if only a free or no free wire is available without having to lay a separate cable.
  • signal lines are also used, through which the lamp currents flow.
  • the invention makes use of the fact that each signal transmitter has its own return conductor to the traffic switching device, these return conductors being placed in the switching device on a common ground rail for all signal transmitters.
  • the return conductors of two signal groups are connected to a conductor loop by a capacitor. This capacitor represents a high resistance for the mains frequency of 50 Hz, but not for the pulses of the data telegrams that are transmitted in a frequency range, for example, above 100 kHz.
  • a mains transformer can be provided in the traffic switching device for the required operating voltage, which transforms the touch-safe low-voltage voltage Infrared head transmits where it is rectified and is available to the infrared transmitter and receiver. If there is no free wire available, but there is a mains voltage on the signal mast, for example because a continuously illuminated pedestrian printhead or a bicycle symbol is supplied with the mains voltage, the mains transformer is expediently arranged in the mast.
  • the mains transformer with its primary winding is connected in parallel to a signal lamp. Since the signaling lamp does not light continuously, in this embodiment of the invention an accumulator is arranged as an energy buffer after the rectifier circuit, which supplies the infrared transmitter / receiver with the necessary operating voltage in the periods during which the signaling device in question is switched off.
  • the mains transformer is expediently connected to a signal lamp that is not monitored for thread breakage, for example the green lamp.
  • Show 1 is a schematic representation of the functional principle of the known traffic control and information system
  • Fig. 2 shows a circuit arrangement according to the invention with a free wire
  • Fig. 3 shows a development of the invention without a free wire.
  • Fig. 1 shows the principle of operation of the control and information system.
  • a signal mast SM with a signal transmitter SG and with the infrared head IRK is shown in the form of an existing light signal system LSA.
  • the signal mast SM is connected to the traffic switching device VSG via signal lines SL.
  • the beacon electronics BE which in turn is connected to a traffic control computer VLR, is arranged in this switching device for the control and information system.
  • the data exchange takes place via infrared transmitters and receivers SB and EB of the lead beacon via the infrared head IRK.
  • the receiving and transmitting device EF and SF for the infrared signals which transmit the data telegrams DT are arranged in the motor vehicle FZ.
  • the vehicle FZ has a processing device for this data and for obtaining all other necessary data.
  • the magnetic field probe MS and the locating device O which on the other hand also receives data from a rate pulse generator RIG, is also shown schematically here.
  • an operating device B with an input keyboard, a direction indicator RZ and a destination memory ZSp is also arranged and shown in the vehicle FZ. Further details of the known traffic management and information system need not be explained.
  • the traffic control device VSG has switches for the traffic light system, for example relay contacts, for the signal transmitters.
  • the phase Ph is connected via these switches S11 to S22 via signal lines SL11 to SL22 to only two signal generators SG1 and SG2 shown here.
  • the respective return conductor of a signal transmitter, here RL1 des Signal generator SG1 and RL2 of the signal generator SG2 are routed separately from the signal mast SM to the traffic switching device VSG, where they are connected together on a neutral conductor MpS.
  • a line is now connected to the return conductor RL2 at the terminal K2, which leads to the capacitor C, which in turn - shown here in simplified form - is only passed through the ring for coupling to the (toroidal core) transmitter UEI.
  • This is identified by the reference symbol W2 for a second transformer turn.
  • the connection is then continued to the terminal K1 of the return conductor RL1, so that a conductor loop is thereby formed.
  • the conductor loop in the traffic switching device VSG is also coupled to a (toroidal) transformer UEV with a second turn W2. This is also shown here in a simplified manner in the drawing, in that the return conductor RL1 is guided through the ring core and then connected accordingly to the neutral conductor rail Mps.
  • the data telegrams DT coming from the beacon electronics BE are coupled in via a first transmitter winding W1 and pass through the two return conductors RL1 and RL2 via the winding W1 of the transmitter UEI in the infrared head IRK to the infrared transmitters and receiving devices, which are no longer shown here.
  • the free wire of the signal line SL is used to transmit the operating voltage for the infrared head.
  • a network transformer TR is therefore arranged in the traffic switching device VSG, which is connected on the primary side to the phase Ph and to the neutral conductor rail MpS. On the secondary side, the winding is also connected to the neutral conductor NpS1 on the one hand and to the free wire SL on the other.
  • the invention is shown here in principle using the example of a signal mast.
  • the beacon electronics supply at a crossing generally several infrared heads, which are arranged on the different signal masts. Therefore - as indicated by the dashed line - both the operating AC voltage (eg 24 volts) and the transmission via the return line of other signal generators are necessary.
  • the alternating operating voltage is transmitted via the free wire of the signal line SL to the infrared head IRK and rectified there by means of the rectifier switch GS. This is followed by a smoothing capacitor CG.
  • the DC operating voltage for the transmitting and receiving devices of the infrared head is tapped at this.
  • the toroidal core transformer UEV in the traffic switching device VSG is expediently dimensioned such that it does not become saturated with the required signal lamp currents. This measure ensures reliable information transmission by means of the data pulses DT.
  • this circuit arrangement according to the invention has the advantage that this transformer UEV forms the pulses in such a way that there are no harmonics which could lead to radio interference.
  • the arrangement of the rectifier switches GS in the infrared head IRK has the advantage that an AC voltage is transmitted on the free wire SL in contrast to a DC voltage because the light signal systems are monitored for the occurrence of DC voltages. This is interpreted as misconduct and leads to the system being switched off.
  • FIG. 3 shows a further development of the invention.
  • the circuit arrangement shown here is similar to the circuit shown in FIG. 2, but with the difference that a free signal line SL is missing and in the traffic switching device VSG no network transformer TR for obtaining the Operating voltage is arranged.
  • the transmission of the data telegrams DT via the corresponding transmitters UEV, UEI is the same in this exemplary embodiment as in the exemplary embodiment according to FIG. Only the extraction of the operating voltage for the infrared head IRK is designed differently according to the invention.
  • the primary winding of the mains transformer TR is parallel to a signal transmitter lamp, preferably to the green lamp of the signal transmitter SG1.
  • the secondary winding of the mains transformer TR is led directly to the rectifier circuit GS.
  • an accumulator AK must be buffered in this type of power supply, which supplies the infrared transmitter / receiver with the operating voltage in the periods during which the signaling device in question is switched off. Therefore, the rectifier circuit is followed by an energy store AK.

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Optical Communication System (AREA)

Description

Die Erfindung bezieht sich auf ein Verkehrsleit- und Informationssystem in einem Straßennetz mit an den Straßen angeordneten ortsfesten Leitbaken, welche zyklisch Leitinformationen aufgrund einer wechselseitigen Datenübertragung mit allen passierenden, mit einer entsprechenden Empfänger-/Sender- und Verarbeitungseinrichtung ausgestatteten Fahrzeugen übermitteln, wobei die Leitbaken von Infrarot-Köpfen mit Sendern und Empfängern, die an vorhandenen Signalmasten einer Lichtsignalanlage angeordnet sind, und von einer Bakenelektronik, die im Schrank eines dazugehörigen Verkehrsschaltgerätes angeordnet ist, gebildet sind.The invention relates to a traffic control and information system in a road network with stationary beacons arranged on the roads, which cyclically transmit guidance information due to a mutual data transmission with all passing vehicles equipped with a corresponding receiver / transmitter and processing device, the beacons of Infrared heads with transmitters and receivers, which are arranged on existing signal masts of a traffic signal system, and are formed by beacon electronics, which are arranged in the cabinet of an associated traffic switching device.

In einem Verkehrsleit- und Informationssystem, wie es beispielsweise in der DE-A-29 36 062 & EP-A-25193 und EP-B1-29 201 beschrieben ist, werden Leitinformationen zur Erreichung der von ihrem Standort aus wählbaren Fahrziele zu den Fahrzeugen übermittelt und Verkehrsdaten, wie z.B. Reisezeit je Streckenabschnitt, von den Fahrzeugen an die Leitstellen gemeldet. Die Infrastruktur für ein solches Verkehrsleit- und Informationssystem soll mit möglichst geringem Aufwand geschaffen werden. So können beispielsweise vorhandene Verkehrssignalrechner für Verkehrssignalanlagensteuerungen mit herangezogen werden. Der Verkehrsleitrechner liefert beispielsweise die notwendigen Informationen an eine Bakenelektronik, die im Schaltschrank des Verkehrsschaltgerätes angeordnet ist. Zur Informationsübertragung zwischen Infrarotkopf und der drahtgebunden zum Infrarotkopf übermittelt werden. Eine Verlegung zusätzlicher Kabel zwischen den Verkehrsschaltgeräten und den Signalmasten ist sehr aufwendig und teuer und sollte aus wirtschaftlichen Gründen unbedingt vermieden werden. Daher wurde schon vorgeschlagen (DE-Patentanmeldung DE-A-35 29 166 & EP-A-218046, publiziert 15.4.7) bei wenigstens drei freien vorhandenen Adern sowohl die Datenübertragung als auch die Stromfernversorgung vorzunehmen. Dies erfordert aber immerhin noch drei freie Adern. Sehr häufig steht aber nur eine freie Ader, wenn überhaupt zur Verfügung.In a traffic control and information system, as described, for example, in DE-A-29 36 062 & EP-A-25193 and EP-B1-29 201, control information for reaching the destinations that can be selected from their location is transmitted to the vehicles and traffic data, such as travel time per route section, reported by the vehicles to the control centers. The infrastructure for such a traffic control and information system should be created with as little effort as possible. For example, existing traffic signal computers can be used for traffic signal system controls. The traffic control computer, for example, supplies the necessary information to beacon electronics which are arranged in the control cabinet of the traffic switching device. For the transfer of information between the infrared head and the wired to the infrared head. Laying additional cables between the traffic switching devices and the signal masts is very complex and expensive and should be avoided for economic reasons. It has therefore already been proposed (DE patent application DE-A-35 29 166 & EP-A-218046, published April 15, 2007) to carry out both the data transmission and the remote power supply with at least three free wires present. However, this still requires three free wires. Very often, however, only one free wire is available, if at all.

Aufgabe der Erfindung ist es daher, für ein eingangs beschriebenes Verkehrsleit- und Informationssystem eine Einrichtung zur Übertragung der Daten und der erforderlichen Versorgungsspannung anzugeben, wenn lediglich eine freie oder überhaupt keine freie Leitungsader zur Verfügung steht, ohne dabei eigens ein gesondertes Kabel verlegen zu müssen.The object of the invention is therefore to provide a device for transmitting the data and the required supply voltage for a traffic control and information system described at the beginning, if only a free or no free wire is available without having to lay a separate cable.

Diese Aufgabe wird bei einem eingangs geschilderten Verkehrsleit-und Informationssystem erfindungsgemäß dadurch gelöst, daß zur Datenübertragung Signalleitungen benützt werden, die bereits für die Lichtsignalanlage benötigt sind, daß im Verkehrsschaltgerät für jeden Infrarotkopf jeweils ein erster Übertrager angeordnet ist, der eine erste Übertragerwicklung für die Ein- und Auskopplung der Datentelegramme aufweist, daß ein erster Signalrückleiter über eine zweite Übertragerwicklung des ersten Übertragers an den Massepunkt geführt ist, daß im Signalmast an dem ersten Signalrückleiter eine Übertragerwicklung eines im Infrarotkopf angeordneten zweiten Übertragers angeklemmt ist, daß in Reihe zu dieser Übertragerwicklung ein Kondensator angeschlossen ist, der an einem zweiten Signalrückleiter angeklemmt ist, ein Kondensator und in Reihe dazu eine Übertragerwicklung eines im Infrarotkopf angeordneten zweiten Übertragers angeklemmt sind, daß der zweite Übertrager eine erste Wicklung aufweist, über die die Daten von und zum Verkehrsschaltgerät für den Infrarotsender und -empfänger übertragen werden, wobei die zweiten Wicklungen mit dem Kondensator über die beiden Signalrückleiter in Reihe geschaltet sind und eine Leiterschleife bilden, die im Verkehrsschaltgerät geerdet ist, und daß die für den Infrarotkopf erforderliche Betriebsspannung aus der Netzwechselspannung im Verkehrsschaltgerät oder im Signalmast gewonnen wird.This object is achieved in a traffic control and information system described at the outset in that signal lines are used for data transmission which are already required for the light signal system, that a first transmitter is arranged in the traffic switching device for each infrared head, which has a first transmitter winding for the input - And decoupling of the data telegrams that a first signal return conductor is guided to the ground point via a second transformer winding of the first transformer, that a transformer winding of a second transformer arranged in the infrared head is clamped to the first signal return conductor in the signal mast, that a capacitor is connected in series with this transformer winding is connected, which is clamped to a second signal return conductor, a capacitor and in series with a transformer winding of a second transmitter arranged in the infrared head are clamped in that the second transmitter has a first winding, via which the data are transmitted from and to the traffic switching device for the infrared transmitter and receiver, the second windings being connected in series with the capacitor via the two signal return conductors and form a conductor loop which is grounded in the traffic switching device and that the operating voltage required for the infrared head is obtained from the mains alternating voltage in the traffic switching device or in the signal mast.

Erfindungsgemäß werden Signalleitungen mit verwendet, über die Lampenströme fließen. Dabei nützt die Erfindung die Tatsache aus, daß jeder Signalgeber einen eigenen Rückleiter zum Verkehrsschaltgerät besitzt, wobei diese Rückleiter im Schaltgerät auf einer für alle Signalgeber gemeinsamen Massepunkt-Schiene gelegt sind. Zur Datenübertragung zwischen der Bakenelektronik im Schaltgerät und dem Infrarotkopf am Signalmast werden die Rückleiter zweier Signalgruppen durch einen Kondensator zu einer Leiterschleife verbunden. Dieser Kondensator stellt für die Netzfrequenz von 50 Hz einen großen Widerstand dar, jedoch nicht für die Impulse der Datentelegramme, die in einem Frequenzbereich beispielsweise oberhalb von 100 kHz übertragen werden. Diese Impulse werden auf beiden Seiten der Übertragungsstrecke, also im Verkehrsschaltgerät und im Infrarotkopf, über die Übertrager ein- bzw. ausgekoppelt. Diese Schaltungsanordnung hat den Vorteil, daß mit wenig Schaltelementen und ohne zusätzliche Leitungen die Datentelegramme übertragen werden. Steht eine freie Ader zur Verfügung, so kann für die erforderliche Betriebsspannung ein Netztransformator im Verkehrsschaltgerät vorgesehen sein, der die berührungssichere Niederwechselspannung zum Infrarotkopf überträgt, wo sie gleichgerichtet wird und dem Infrarotsender und -empfänger zur Verfügung steht. Steht keine freie Ader zur Verfügung, jedoch eine Netzspannung am Signalmast, weil beispielsweise dort ein dauernd leuchtender Fußgänger-Druckkopf oder ein Fahrradsymbol mit der Netzspannung versorgt ist, so wird zweckmäßigerweise der Netztransformator im Mast angeordnet.According to the invention, signal lines are also used, through which the lamp currents flow. The invention makes use of the fact that each signal transmitter has its own return conductor to the traffic switching device, these return conductors being placed in the switching device on a common ground rail for all signal transmitters. For data transmission between the beacon electronics in the switching device and the infrared head on the signal mast, the return conductors of two signal groups are connected to a conductor loop by a capacitor. This capacitor represents a high resistance for the mains frequency of 50 Hz, but not for the pulses of the data telegrams that are transmitted in a frequency range, for example, above 100 kHz. These impulses are coupled in and out on both sides of the transmission link, i.e. in the traffic switching device and in the infrared head, via the transmitters. This circuit arrangement has the advantage that the data telegrams are transmitted with few switching elements and without additional lines. If there is a free wire available, a mains transformer can be provided in the traffic switching device for the required operating voltage, which transforms the touch-safe low-voltage voltage Infrared head transmits where it is rectified and is available to the infrared transmitter and receiver. If there is no free wire available, but there is a mains voltage on the signal mast, for example because a continuously illuminated pedestrian printhead or a bicycle symbol is supplied with the mains voltage, the mains transformer is expediently arranged in the mast.

Fehlt eine freie Ader und ist auch am Signalmast keine Netzspannung vorhanden, so wird in Weiterbildung der Erfindung der Netztransformator mit seiner Primärwicklung parallel zu einer Signalgeber-Lampe geschaltet. Da die Signalgeberlampe nicht dauernd leuchtet, wird bei dieser Ausführung der Erfindung ein Akkumulator als Energiepuffer nach der Gleichrichterschaltung angeordnet, der die Infrarot-Sender/Empfänger in den Perioden mit der notwendigen Betriebsspannung versorgt, währendessen der betreffende Signalgeber abgeschaltet ist. Dabei wird zweckmäßigerweise der Netztransformator an einer Signallampe angeschaltet, die nicht auf Fadenbruch überwacht wird, also beispielsweise die Grünlampe.If there is no free wire and there is no mains voltage at the signal mast, in a further development of the invention the mains transformer with its primary winding is connected in parallel to a signal lamp. Since the signaling lamp does not light continuously, in this embodiment of the invention an accumulator is arranged as an energy buffer after the rectifier circuit, which supplies the infrared transmitter / receiver with the necessary operating voltage in the periods during which the signaling device in question is switched off. The mains transformer is expediently connected to a signal lamp that is not monitored for thread breakage, for example the green lamp.

Anhand der Zeichnung wird die Erfindung an zwei Ausführungsbeispielen im folgenden erläutert. Dabei zeigen
Fig. 1 eine schematische Darstellung des Funktionsprinzips des bekannten Verkehrsleit- und Informationssystems,
Fig. 2 eine erfindungsgemäße Schaltungsanordnung mit einer freien Leitungsader und
Fig. 3 eine Weiterbildung der Erfindung ohne freie Leitungsader.The invention is explained below using two exemplary embodiments with reference to the drawing. Show
1 is a schematic representation of the functional principle of the known traffic control and information system,
Fig. 2 shows a circuit arrangement according to the invention with a free wire and
Fig. 3 shows a development of the invention without a free wire.

Fig. 1 zeigt das Funktionsprinzip des Leit- und Informationssystems. In Form einer bestehenden Lichtsignalanlage LSA ist ein Signalmast SM mit einem Signalgeber SG und mit dem Infrarotkopf IRK gezeigt. Der Signalmast SM ist über Signalleitungen SL mit dem Verkehrsschaltgerät VSG verbunden. In diesem Schaltgerät ist für das Leit-und Informationssystem die Bakenelektronik BE angeordnet, die ihrerseits mit einem Verkehrsleitrechner VLR verbunden ist. Der Datenaustausch erfolgt über Infrarotsender und -empfänger SB und EB der Leitbake über den Infrarotkopf IRK. Im Kraftfahrzeug FZ ist die Empfangs- und Sendeeinrichtung EF und SF für die Infrarotsignale, die die Datentelegramme DT übermitteln, angeordnet. Ferner weist das Fahrzeug FZ eine Verarbeitungseinrichtung für diese Daten und zur Gewinnung aller anderen notwendigen Daten auf. Schematisch ist hier noch gezeigt die Magnetfeldsonde MS und das Ortungsgerät O, das andererseits auch noch Daten von einem Ratimpulsgeber RIG erhält. Neben einem Reisezeitmesser RZM und einem Navigationsgerät N ist im Fahrzeug FZ noch ein Bediengerät B mit einer Eingabetastatur, einer Richtungsanzeige RZ und einem Zielspeicher ZSp angeordnet und gezeigt. Weitere Einzelheiten des bekannten Verkehrsleit-und Informationssystems brauchen nicht erläutert zu werden.Fig. 1 shows the principle of operation of the control and information system. A signal mast SM with a signal transmitter SG and with the infrared head IRK is shown in the form of an existing light signal system LSA. The signal mast SM is connected to the traffic switching device VSG via signal lines SL. The beacon electronics BE, which in turn is connected to a traffic control computer VLR, is arranged in this switching device for the control and information system. The data exchange takes place via infrared transmitters and receivers SB and EB of the lead beacon via the infrared head IRK. The receiving and transmitting device EF and SF for the infrared signals which transmit the data telegrams DT are arranged in the motor vehicle FZ. Furthermore, the vehicle FZ has a processing device for this data and for obtaining all other necessary data. The magnetic field probe MS and the locating device O, which on the other hand also receives data from a rate pulse generator RIG, is also shown schematically here. In addition to a travel timer RZM and a navigation device N, an operating device B with an input keyboard, a direction indicator RZ and a destination memory ZSp is also arranged and shown in the vehicle FZ. Further details of the known traffic management and information system need not be explained.

Die Fig.2 zeigt die erfindungsgemäße Schaltungsanordnung in Form einer Schnittstelle zwischen der Bakenelektronik BE und dem Infrarotkopf IRK. Das Verkehrsschaltgerät VSG weist u.a. für die Lichtsignalanlage Schalter, beispielsweise Relaiskontakte, für die Signalgeber auf. Die Phase Ph ist über diese Schalter S11 bis S22 über Signalleitungen SL11 bis SL22 mit hier nur zwei dargestellten Signalgebern SG1 und SG2 verbunden. Der jeweilige Rückleiter eines Signalgebers, hier RL1 des Signalgebers SG1 und RL2 des Signalgebers SG2, sind vom Signalmast SM zum Verkehrsschaltgerät VSG getrennt geführt, wo sie an einer Nulleiterschiene MpS gemeinsam angeschlossen sind. Erfindungsgemäß ist nun am Rückleiter RL2 an der Klemme K2 eine Leitung angeklemmt, die zu dem Kondensator C führt, der seinerseits - hier vereinfacht dargestellt - zur Ankopplung an den (Ringkern)-Übertrager UEI nur durch den Ring geführt ist. Dies ist mit dem Bezugszeichen W2 für eine zweite Übertragerwindung gekennzeichnet. Der Anschluß ist dann weitergeführt zur Klemme K1 des Rückleiters RL1, so daß hierdurch eine Leiterschleife gebildet ist. Die Leiterschleife ist im Verkehrsschaltgerät VSG ebenfalls an einem (Ringkern-) Übertrager UEV mit einer zweiten Windung W2 angekoppelt. Hier in der Zeichnung ist dies ebenfalls vereinfacht dargestellt, indem der Rückleiter RL1 durch den Ringkern geführt und dann entsprechend an der Nulleiterschiene MpS angeschlossen ist. Die von der Bakenelektronik BE kommenden Datentelegramme DT werden über eine erste Übertragerwicklung W1 eingekoppelt und gelangen über die beiden Rückleiter RL1 und RL2 über die Wicklung W1 des Übertragers UEI im Infrarotkopf IRK zu den hier nicht mehr dargestellten Infrarotsender und -empfangseinrichtungen. Die hier freie Ader der Signalleitung SL wird zur Übertragung der Betriebsspannung für den Infrarotkopf benützt. Deshalb ist ein Netztransformator TR im Verkehrsschaltgerät VSG angeordnet, der primärseitig an der Phase Ph und an der Nulleiterschiene MpS angeschlossen ist. Sekundärseitig ist die Wicklung einerseits auch an der Nulleiterschiene NpS1 angeschlossen, andererseits an der freien Ader SL.2 shows the circuit arrangement according to the invention in the form of an interface between the beacon electronics BE and the infrared head IRK. The traffic control device VSG has switches for the traffic light system, for example relay contacts, for the signal transmitters. The phase Ph is connected via these switches S11 to S22 via signal lines SL11 to SL22 to only two signal generators SG1 and SG2 shown here. The respective return conductor of a signal transmitter, here RL1 des Signal generator SG1 and RL2 of the signal generator SG2 are routed separately from the signal mast SM to the traffic switching device VSG, where they are connected together on a neutral conductor MpS. According to the invention, a line is now connected to the return conductor RL2 at the terminal K2, which leads to the capacitor C, which in turn - shown here in simplified form - is only passed through the ring for coupling to the (toroidal core) transmitter UEI. This is identified by the reference symbol W2 for a second transformer turn. The connection is then continued to the terminal K1 of the return conductor RL1, so that a conductor loop is thereby formed. The conductor loop in the traffic switching device VSG is also coupled to a (toroidal) transformer UEV with a second turn W2. This is also shown here in a simplified manner in the drawing, in that the return conductor RL1 is guided through the ring core and then connected accordingly to the neutral conductor rail Mps. The data telegrams DT coming from the beacon electronics BE are coupled in via a first transmitter winding W1 and pass through the two return conductors RL1 and RL2 via the winding W1 of the transmitter UEI in the infrared head IRK to the infrared transmitters and receiving devices, which are no longer shown here. The free wire of the signal line SL is used to transmit the operating voltage for the infrared head. A network transformer TR is therefore arranged in the traffic switching device VSG, which is connected on the primary side to the phase Ph and to the neutral conductor rail MpS. On the secondary side, the winding is also connected to the neutral conductor NpS1 on the one hand and to the free wire SL on the other.

Die Erfindung ist hier nur prinzipiell am Beispiel eines Signalmastes gezeigt. Die Bakenelektronik versorgt jedoch an einer Kreuzung im allgemeinen mehrere Infrarotköpfe, die an den verschiedenen Signalmasten angeordnet sind. Daher ist - wie das gestrichelt angedeutet ist - sowohl die Betriebswechselspannung (z.B. 24 Volt) als auch die Übertragung über Rückleiter anderer Signalgeber notwendig. Die Betriebswechselspannung wird über die freie Ader der Signalleitung SL zum Infrarotkopf IRK übertragen und dort mittels der Gleichrichterschalter GS gleichgerichtet. Dieser ist ein Glättungskondensator CG nachgeschaltet. An diesem wird die Betriebsgleichspannung für die Sende- und Empfangseinrichtungen des Infrarotkopfes abgegriffen.The invention is shown here in principle using the example of a signal mast. The beacon electronics, however, supply at a crossing generally several infrared heads, which are arranged on the different signal masts. Therefore - as indicated by the dashed line - both the operating AC voltage (eg 24 volts) and the transmission via the return line of other signal generators are necessary. The alternating operating voltage is transmitted via the free wire of the signal line SL to the infrared head IRK and rectified there by means of the rectifier switch GS. This is followed by a smoothing capacitor CG. The DC operating voltage for the transmitting and receiving devices of the infrared head is tapped at this.

Zweckmäßigerweise ist der Ringkernübertrager UEV im Verkehrsschaltgerät VSG so dimensioniert, daß er bei den erforderlichen Signallampenströmen nicht in Sättigung gelangt. Diese Maßnahme sichert eine zuverlässige Informationsübertragung mittels der Datenimpulse DT. Darüber hinaus hat diese erfindungsgemäße Schaltungsanordnung noch den Vorteil, daß dieser Übertrager UEV die Impulse so formen, daß keine Oberwellen entstehen, die zu Funkstörungen führen könnten. Die Anordnung der Gleichrichterschalter GS im Infrarotkopf IRK hat den Vorteil, daß auf der freien Ader SL eine Wechselspannung im Gegensatz zu einer Gleichspannung übertragen wird, weil die Lichtsignalanlagen auf das Auftreten von Gleichspannungen überwacht werden. Dies wird als Fehlverhalten interpretiert und führt zur Abschaltung der Anlage.The toroidal core transformer UEV in the traffic switching device VSG is expediently dimensioned such that it does not become saturated with the required signal lamp currents. This measure ensures reliable information transmission by means of the data pulses DT. In addition, this circuit arrangement according to the invention has the advantage that this transformer UEV forms the pulses in such a way that there are no harmonics which could lead to radio interference. The arrangement of the rectifier switches GS in the infrared head IRK has the advantage that an AC voltage is transmitted on the free wire SL in contrast to a DC voltage because the light signal systems are monitored for the occurrence of DC voltages. This is interpreted as misconduct and leads to the system being switched off.

Fig. 3 zeigt eine Weiterbildung der Erfindung. Die hier gezeigte Schaltungsanordnung ist ähnlich der in der fig.2 dargestellten Schaltung jedoch mit dem Unterschied, daß eine freie Signalleitung SL fehlt und im Verkehrsschaltgerät VSG kein Netztransformator TR zur Gewinnung der Betriebsspannung angeordnet ist. Die Übertragung der Datentelegramme DT über die entsprechenden Übertrager UEV, UEI ist bei diesem Ausführungsbeispiel genauso wie bei dem Ausführungsbeispiel gemäß der Fig.2. Lediglich die Gewinnung der Betriebsspannung für den Infrarotkopf IRK ist erfindungsgemäß anders gestaltet. Die Primärwicklung des Netztransformators TR liegt parallel zu einer Signalgeberlampe, vorzugsweise zur Grünlampe des Signalgebers SG1. Die Sekundärwicklung des Netztransformators TR wird unmittelbar zur Gleichrichterschaltung GS geführt. Da die Signalgeberlampe nicht dauernd leuchtet, muß bei dieser Art der Stromversorgung ein Akkumulator AK gepuffert werden, der die Infrarot-Sender/Empfänger in den Perioden mit der Betriebsspannung versorgt, während denen der betreffende Signalgeber abgeschaltet ist. Daher ist der Gleichrichterschaltung ein Energiespeicher AK nachgeschaltet.3 shows a further development of the invention. The circuit arrangement shown here is similar to the circuit shown in FIG. 2, but with the difference that a free signal line SL is missing and in the traffic switching device VSG no network transformer TR for obtaining the Operating voltage is arranged. The transmission of the data telegrams DT via the corresponding transmitters UEV, UEI is the same in this exemplary embodiment as in the exemplary embodiment according to FIG. Only the extraction of the operating voltage for the infrared head IRK is designed differently according to the invention. The primary winding of the mains transformer TR is parallel to a signal transmitter lamp, preferably to the green lamp of the signal transmitter SG1. The secondary winding of the mains transformer TR is led directly to the rectifier circuit GS. Since the signaling lamp does not light continuously, an accumulator AK must be buffered in this type of power supply, which supplies the infrared transmitter / receiver with the operating voltage in the periods during which the signaling device in question is switched off. Therefore, the rectifier circuit is followed by an energy store AK.

Claims (4)

  1. Traffic guidance and information system in a road network having fixed guidance beacons arranged on the street, which beacons cyclically transfer guidance information on the basis of an alternating data transfer (DT) to all passing vehicles (FZ) equipped with a corresponding receiver/transmitter and processing device (ET/SF), the guidance beacons being formed by infrared heads (IRK) with transmitters (SB) and receivers (EB) which are arranged on existing signalling masts (SM) of a traffic light system (LSA) and are formed by a beacon electronic system (BE) which is arranged in the cabinet of an associated traffic control device (VSG), characterised in that for the data transmission (DT) signalling lines are used which are already required for the traffic light system (LSA), in that in each case a first transformer (UEV) for each infrared head (IRK) is arranged in the traffic control device (VSG), which transformer has a first transformer winding (W1) for the inputting and outputting of the data telegrams (DT), in that a first signal return line (RL1) is connected to the earth point (Mp) via a second transformer winding (W2) of the first transformer (UEV), in that in the signalling mast (SM) a second transformer winding (W2) of a transformer (UEI) arranged in the infrared head (IRK) is connected (K1) to the first signal return line (RL1) in that connected in series with this transformer winding (W2) there is a capacitor (C) which is connected (K2) to a second signal return line (RL2), in that the second transformer (UEI) has a first winding (W1), via which the data (DT) are transmitted from and to the traffic control device (VSG) for the infrared transmitter and receiver, the second windings (W2) being connected in series to the capacitor (C) via the two signal return lines (RL1, RL2) and forming a conductor loop which is earthed (Mp) in the traffic control device (VSG), and in that the operating voltage required for the infrared head (IRK) is acquired from the mains alternating voltage in the traffic control device (VSG) or in the signalling mast (SM).
  2. Traffic guidance and information system according to Claim 1, characterised in that arranged in the traffic control device (VSG) there is a mains transformer (TR), the secondary winding of which is connected to a protected low alternating voltage via one free signalling line (SL) in each case and one wired signalling return line (RL2) in each case to a rectifier circuit (GS) arranged in the infrared head (IRK), the operating direct voltage being present at a filter capacitor (CG) connected downstream of the rectifier circuit (GS).
  3. Traffic guidance and information system according to Claim 1, characterised in that in the signalling mast (SM) a mains transformer (TR) is arranged in parallel with a signal transmitter lamp (e.g. green lamp) which is not monitored for a filament break, and in that the secondary winding of the transformer (TR) is connected directly to the rectifier circuit (GS), a power storage device (AK) which emits the operating direct voltage being connected downstream of the rectifier circuit (GS).
  4. Traffic guidance and information system according to Claim 1, characterised in that the transformer (UEV) in the traffic control device (VSG) is dimensioned in such a way that it does not become saturated with the required signalling lamp currents.
EP87111565A 1986-08-13 1987-08-10 Traffic guidance and information system Expired - Lifetime EP0256483B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3627474 1986-08-13
DE3627474 1986-08-13

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EP0256483A1 EP0256483A1 (en) 1988-02-24
EP0256483B1 true EP0256483B1 (en) 1991-05-02

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EP87111565A Expired - Lifetime EP0256483B1 (en) 1986-08-13 1987-08-10 Traffic guidance and information system

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Publication number Priority date Publication date Assignee Title
ATE160459T1 (en) * 1992-07-02 1997-12-15 Siemens Ag DATA TRANSMISSION ARRANGEMENT
EP0962006B1 (en) * 1997-02-19 2001-10-04 Siemens Aktiengesellschaft Data transmission device for traffic-guidance and traffic-information systems
DE19735523A1 (en) * 1997-08-16 1999-02-18 Alsthom Cge Alcatel Information exchange process, interrogation station and reply station therefor
EP0903711A3 (en) * 1997-09-18 2000-08-23 Siemens Aktiengesellschaft Method for transmitting traffic information
DE19756698A1 (en) * 1997-12-19 1999-07-01 Daimler Chrysler Ag Lighting system
EP0981122A1 (en) * 1998-03-06 2000-02-23 Sociedad Iberica de Construcciones Electricas, S.A. Active marker
DE10046836A1 (en) * 2000-09-20 2002-05-02 Trend Network Ag Transmitting information from static computer to vehicle computer involves radiating information in defined area around stopping point, receiving on vehicle while in transmission area

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Publication number Priority date Publication date Assignee Title
DE2936062C2 (en) * 1979-09-06 1985-11-07 Siemens AG, 1000 Berlin und 8000 München Control system for individual traffic and procedures for the transmission of control information
DE3304451C1 (en) * 1983-02-09 1990-02-15 Siemens AG, 1000 Berlin und 8000 München Method and device for two-way information transmission between a stationary main station and a plurality of mobile sub-stations
DE3672550D1 (en) * 1985-08-14 1990-08-16 Siemens Ag ARRANGEMENT FOR A TRAFFIC GUIDE AND INFORMATION SYSTEM.

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EP0256483A1 (en) 1988-02-24
DE3769726D1 (en) 1991-06-06

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