EP1506458B1 - Street traffic technical system - Google Patents

Street traffic technical system Download PDF

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Publication number
EP1506458B1
EP1506458B1 EP03729884.1A EP03729884A EP1506458B1 EP 1506458 B1 EP1506458 B1 EP 1506458B1 EP 03729884 A EP03729884 A EP 03729884A EP 1506458 B1 EP1506458 B1 EP 1506458B1
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EP
European Patent Office
Prior art keywords
time
internal clocks
apparatuses
traffic
signal
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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
EP03729884.1A
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German (de)
French (fr)
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EP1506458A1 (en
Inventor
Tilo Krebs
Gerd Lissewski
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Siemens AG
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Siemens AG
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/002—Setting, i.e. correcting or changing, the time-indication brought into action by radio
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/26—Setting the time according to the time information carried or implied by the radio signal the radio signal being a near-field communication signal

Definitions

  • the invention relates to a traffic engineering system
  • the control units of traffic lights are connected to a traffic control center.
  • the traffic status is detected at nodes of the control area of detector devices and transmitted to the traffic control center.
  • signal programs are calculated from the recorded traffic data on the basis of traffic-dependent control methods, according to which the signal times of the traffic signals are switched via the control devices.
  • To generate a green wave on a certain distance of the road network The internal clocks of the ECUs must be in a precisely defined relationship with each other and thus synchronized from time to time.
  • the parking management is listed.
  • parking guidance systems which has a parking space seekers the way to a free parking space in a parking garage or in a parking lot via display devices.
  • a correct date and time in the individual parking ticket machines is essential.
  • the internal clocks of the parking ticket machines are to be synchronized from time to time.
  • From the utility model DE 298 22 429 U1 is a device for the synchronization of internal clocks in parking ticket machines known.
  • the various parking ticket machines are connected via a bidirectional data transmission with a control center, which is based on a PC system.
  • a control center In the center of a radio clock is provided, which is synchronized by a time signal of a standard time prescribing time transmitter - such as the Physikalisch-Technische Bundesweg. If, for example, the control center receives a status message from the individual parking ticket machines, the time of the radio clock is appended to the acknowledgment of this signal by the control center and transmitted to the individual internal clocks of the automatic machines.
  • the radio clock receiver are within a radius of about 1500 km around the time transmitter.
  • the invention has for its object to provide a synchronization system of the type mentioned, which is able to synchronize the internal clocks of timed devices within a large area as possible.
  • this object is achieved by a generic traffic engineering system according to claim 1, wherein the time transmitter is designed as a satellite system.
  • a system of satellites moving around the earth provides a standard time that can be received globally.
  • receiving means can receive the predetermined by the satellite system standard time.
  • the means for receiving the respective time signal may e.g. be designed as per se known GPS receiver and arranged in each device.
  • the receiving means are arranged in a central, wherein means are provided for transmitting a received time signal from the central office to the internal clocks of the devices.
  • a GPS receiver which worldwide the internal clocks of all centers with the standard time of the satellite system can be synchronized.
  • the received time signal can be transmitted by transmission means to the internal clocks of the individual institutions, so that a worldwide synchronization is possible.
  • line-bound transmission means into consideration, such as the telephone landline or fiber optic cable.
  • the transmission means for the radio transmission of a time signal are formed.
  • the location of the temporally coordinated facilities is not bound to the infrastructure of a pipeline network.
  • known bidirectional transmission means such as trunked radio or a GSM mobile radio network with 900 or 1800 or 1900 MHz can be used.
  • other standards such as GPRS or UMTS, can be used.
  • a synchronization system is used for temporally coordinated devices of traffic engineering, in particular for parking ticket machines connected to a monitoring center or for control devices for traffic signal systems connected to a traffic control center.
  • a multiplicity of devices 1 designed as parking ticket machines are connected to a central station 2 for monitoring the devices 1 by means of a bidirectional data transmission.
  • the center 2 is based, as shown schematically, on a PC system.
  • the standard time predetermining time transmitter 3 is designed as a satellite system whose time signals can be received worldwide.
  • the center 2 has a GPS receiver. This is the normal time available in each center 2 with designed as a GPS receiver receiving means 4 and indeed in centers 2, which are much farther apart than the receiving range of a radio clock system pretends. If necessary, the internal clocks of the parking ticket machines 1 can now be synchronized in accordance with the normal time available in a central station 2.
  • transmission means 5 which are designed as radio modems for a GSM or GPRS or UMTS radio network.
  • the transmission means allow bidirectional data transmission between the parking ticket machine 1 and the center 2, wherein from the parking ticket machine 1 messages about their status, the cash register or the daily receipts are sent to the central station 2, which is acknowledged by a returned acknowledgment signal. Attached to this acknowledgment signal, the satellite-synchronized time can be transmitted to the parking ticket machines 1 for setting the internal clocks. This makes it possible to synchronize internal clocks of parking ticket machines 1, the centers 2 are arranged over long distances and even distributed worldwide.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Traffic Control Systems (AREA)
  • Electric Clocks (AREA)

Description

Die Erfindung bezieht sich auf ein straßenverkehrstechnisches SystemThe invention relates to a traffic engineering system

Bei unterschiedlichsten industriellen Prozessen, wie auch bei vielen Anwendungen des täglichen Lebens, kommen Einrichtungen zum Einsatz, die in irgendeiner Weise zeitlich aufeinander abgestimmt sind. Um den Zeitpunkt von Ereignissen oder die Zeitdauer von Vorgängen in den unterschiedlichen Einrichtungen definieren zu können, werden zum Teil hohe Anforderungen an die Genauigkeit von internen Uhren dieser Einrichtungen gestellt. Obwohl die Ungenauigkeit der heute üblicherweise verwendeten Quarzuhren nur wenige Minuten im Jahr beträgt, ist es notwendig, die internen Uhren zeitlich aufeinander abgestimmter Einrichtungen von Zeit zu Zeit zu synchronisieren. Dies trifft insbesondere für Einrichtungen aus der Straßenverkehrstechnik zu.In a variety of industrial processes, as well as many applications of everyday life, facilities are used, which are in some way timed to each other. In order to be able to define the time of events or the duration of events in the various devices, in part high demands are placed on the accuracy of internal clocks of these devices. Although the inaccuracy of today's commonly used quartz watches is only a few minutes a year, it is necessary to synchronize the internal timepieces of timed devices from time to time. This is especially true for traffic engineering equipment.

In einem bestimmten Regelgebiet eines Straßennetzes sind die Steuergeräte von Lichtsignalanlagen mit einer Verkehrsrechnerzentrale verbunden. In bestimmten Abständen wird der Verkehrszustand an Knotenpunkten des Regelgebietes von Detektoreinrichtungen erfasst und an die Verkehrsrechnerzentrale übertragen. Zur Erzielung eines optimalen Verkehrsablaufs werden aus den erfassten Verkehrsdaten auf der Grundlage verkehrsabhängiger Steuerungsverfahren Signalprogramme berechnet, nach welchen die Signalzeiten der Lichtsignalanlagen über die Steuergeräte geschaltet werden. Zur Erzeugung einer grünen Welle auf einer bestimmten Strecke des Straßennetzes müssen die internen Uhren der Steuergeräte in einer zeitlich genau definierten Beziehung zueinander stehen und damit von Zeit zu Zeit synchronisiert werden.In a certain control area of a road network, the control units of traffic lights are connected to a traffic control center. At certain intervals, the traffic status is detected at nodes of the control area of detector devices and transmitted to the traffic control center. In order to achieve an optimal traffic flow, signal programs are calculated from the recorded traffic data on the basis of traffic-dependent control methods, according to which the signal times of the traffic signals are switched via the control devices. To generate a green wave on a certain distance of the road network The internal clocks of the ECUs must be in a precisely defined relationship with each other and thus synchronized from time to time.

Als weiteres Beispiel sei die Parkraumbewirtschaftung aufgeführt. Zur optimalen Auslastung eines zur Verfügung stehenden Parkraumes werden Parkleitsysteme eingesetzt, die über Anzeigevorrichtungen einem Parkplatzsuchenden den Weg zu einem freien Stellplatz in einem Parkhaus oder auf einem Parkplatz weist. Zum Zwecke der Parkgebührenberechnung oder als Grundlage für statistische Auswertungen ist eine korrekte Datums- und Zeitangabe in den einzelnen Parkscheinautomaten unabdingbar. Dazu sind die internen Uhren der Parkscheinautomaten von Zeit zu Zeit zu synchronisieren.As another example, the parking management is listed. For optimum utilization of an available parking space parking guidance systems are used, which has a parking space seekers the way to a free parking space in a parking garage or in a parking lot via display devices. For the purpose of parking fee calculation or as a basis for statistical evaluations, a correct date and time in the individual parking ticket machines is essential. For this purpose, the internal clocks of the parking ticket machines are to be synchronized from time to time.

Aus der Gebrauchsmusterschrift DE 298 22 429 U1 ist eine Einrichtung zur Synchronisation von internen Uhren in Parkscheinautomaten bekannt. Die verschiedenen Parkscheinautomaten sind über eine bidirektionale Datenübertragung mit einer Zentrale verbunden, die auf einem PC-System basiert. In der Zentrale ist eine Funkuhr vorgesehen, die durch ein Zeitsignal eines eine Normzeit vorgebenden Zeitsenders - etwa der Physikalisch-Technischen Bundesanstalt - synchronisiert ist. Empfängt die Zentrale beispielsweise eine Statusmeldung von den einzelnen Parkscheinautomaten, so wird an die Quittierung dieses Signals von der Zentrale die Uhrzeit der Funkuhr angehängt und zu den einzelnen internen Uhren der Automaten übertragen. Mit diesem System können interne Uhren synchronisiert werden, deren Funkuhrempfänger innerhalb eines Radiuses von ca. 1500 km um den Zeitsender liegen.From the utility model DE 298 22 429 U1 is a device for the synchronization of internal clocks in parking ticket machines known. The various parking ticket machines are connected via a bidirectional data transmission with a control center, which is based on a PC system. In the center of a radio clock is provided, which is synchronized by a time signal of a standard time prescribing time transmitter - such as the Physikalisch-Technische Bundesanstalt. If, for example, the control center receives a status message from the individual parking ticket machines, the time of the radio clock is appended to the acknowledgment of this signal by the control center and transmitted to the individual internal clocks of the automatic machines. With this system, internal clocks can be synchronized, the radio clock receiver are within a radius of about 1500 km around the time transmitter.

Der Erfindung liegt die Aufgabe zugrunde ein Synchronisationssystem der eingangs genannten Art bereitzustellen, welches die internen Uhren von zeitlich aufeinander abgestimmten Einrichtungen innerhalb eines möglichst großen Gebietes zu synchronisieren vermag.The invention has for its object to provide a synchronization system of the type mentioned, which is able to synchronize the internal clocks of timed devices within a large area as possible.

Erfindungsgemäß wird diese Aufgabe gelöst durch ein gattungsgemäßes straßenverkehrstechnisches System gemäß Anspruch 1, bei dem der Zeitsender als Satellitensystem ausgebildet ist. Ein System von sich um die Erde bewegenden Satelliten stellt eine Normalzeit zur Verfügung, die global empfangen werden kann. Zur Synchronisation der internen Uhren können Empfangsmittel die durch das Satellitensystem vorgegebene Normalzeit empfangen. Die Mittel zum Empfang des jeweiligen Zeitsignals können z.B. als an sich bekannte GPS-Empfänger ausgebildet und in jeder Einrichtung angeordnet sein.According to the invention, this object is achieved by a generic traffic engineering system according to claim 1, wherein the time transmitter is designed as a satellite system. A system of satellites moving around the earth provides a standard time that can be received globally. For synchronization of the internal clocks receiving means can receive the predetermined by the satellite system standard time. The means for receiving the respective time signal may e.g. be designed as per se known GPS receiver and arranged in each device.

In einer bevorzugten Ausführungsform des erfindungsgemäßen Synchronisationssystems sind die Empfangsmittel in einer Zentrale angeordnet, wobei Mittel zur Übertragung eines empfangenen Zeitsignals von der Zentrale an die internen Uhren der Einrichtungen vorgesehen sind. Dadurch genügt es bei vernetzten Einrichtungen, die mit einer Zentrale verbunden sind, statt in jeder einzelnen Einrichtung die Empfangsmittel nur in der Zentrale vorzusehen. In kostengünstiger Weise braucht dann lediglich für jede Netzzentrale ein GPS-Empfänger angeschafft zu werden, wodurch weltweit die internen Uhren aller Zentralen mit der Normalzeit des Satellitensystems synchronisierbar sind. In durch den Betreiber der Netze vorgebbaren Zeitabständen kann dann das empfangene Zeitsignal durch Übertragungsmittel an die internen Uhren der einzelnen Einrichtungen weitergegeben werden, so dass eine weltweite Synchronisation möglich ist. Es kommen leitungsgebundene Übertragungsmittel in Betracht, wie etwa das Telefonfestnetz oder auch Lichtwellenleiter.In a preferred embodiment of the synchronization system according to the invention the receiving means are arranged in a central, wherein means are provided for transmitting a received time signal from the central office to the internal clocks of the devices. As a result, it is sufficient for networked devices which are connected to a control center, instead of providing the receiving means only in the center in each individual device. In cost-effective manner then only needs to be purchased for each network headquarters, a GPS receiver, which worldwide the internal clocks of all centers with the standard time of the satellite system can be synchronized. In predetermined by the operator of the networks time intervals then the received time signal can be transmitted by transmission means to the internal clocks of the individual institutions, so that a worldwide synchronization is possible. There are line-bound transmission means into consideration, such as the telephone landline or fiber optic cable.

In einer vorteilhaften Ausgestaltung der Erfindung sind die Übertragungsmittel zur Funkübertragung eines Zeitsignals ausgebildet. Dadurch ist der Standort der zeitlich aufeinander abgestimmten Einrichtungen nicht an die Infrastruktur eines Leitungsnetzes gebunden. Vielmehr können bekannte bidirektionale Übertragungsmittel, wie Bündelfunk oder ein GSM-Mobilfunknetz mit 900 bzw. 1800 bzw. 1900 MHz eingesetzt werden. Alternativ sind natürlich auch andere Standards, etwa GPRS oder UMTS, einsetzbar.In an advantageous embodiment of the invention, the transmission means for the radio transmission of a time signal are formed. As a result, the location of the temporally coordinated facilities is not bound to the infrastructure of a pipeline network. Rather, known bidirectional transmission means, such as trunked radio or a GSM mobile radio network with 900 or 1800 or 1900 MHz can be used. Alternatively, of course, other standards, such as GPRS or UMTS, can be used.

Vorzugsweise wird ein erfindungsgemäßes Synchronisationssystem für zeitlich aufeinander abgestimmte Einrichtungen der Straßenverkehrstechnik verwendet, insbesondere für mit einer Überwachungszentrale verbundene Parkscheinautomaten oder für mit einer Verkehrsrechnerzentrale verbundene Steuergeräte für Lichtsignalanlagen.Preferably, a synchronization system according to the invention is used for temporally coordinated devices of traffic engineering, in particular for parking ticket machines connected to a monitoring center or for control devices for traffic signal systems connected to a traffic control center.

Die Erfindung wird nun anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert, in deren einziger Figur ein erfindungsgemäßes Synchronisationssystem für interne Uhren von Parkscheinautomaten schematisch veranschaulicht ist.The invention will now be explained in more detail with reference to an embodiment shown in the drawing, in the single figure of an inventive synchronization system for internal clocks of parking ticket machines is illustrated schematically.

Gemäß der Figur ist eine Vielzahl an als Parkscheinautomaten ausgebildeten Einrichtungen 1 mit einer Zentrale 2 zur Überwachung der Einrichtungen 1 mittels einer bidirektionalen Datenübertragung verbunden. Die Zentrale 2 basiert, wie schematisch dargestellt, auf einem PC-System. Der die Normalzeit vorgebende Zeitsender 3 ist als Satellitensystem ausgebildet, dessen Zeitsignale weltweit empfangen werden können. Als Empfangsmittel 4 für ein solches Zeitsignal weist die Zentrale 2 einen GPS-Empfänger auf. Damit steht in jeder Zentrale 2 mit als GPS-Empfänger ausgebildeten Empfangsmitteln 4 die Normalzeit zur Verfügung und zwar auch in Zentralen 2, die wesentlich weiter voneinander entfernt liegen, als der Empfangsbereich eines Funkuhrsystems vorgibt. Nach Bedarf können nun die internen Uhren der Parkscheinautomaten 1 entsprechend der in einer Zentrale 2 verfügbaren Normalzeit synchronisiert werden. Hierzu bedient man sich bereits vorhandener Übertragungsmittel 5, die als Funkmodem für ein GSM- oder auch GPRS- oder UMTS-Funknetz ausgebildet sind. Die Übertragungsmittel ermöglichen eine bidirektionale Datenübertragung zwischen den Parkscheinautomaten 1 und der Zentrale 2, wobei von den Parkscheinautomaten 1 Meldungen über ihren Status, den Kassenstand oder die Tageseinnahmen an die Zentrale 2 gesendet werden, was durch ein zurückgesendetes Bestätigungssignal quittiert wird. An dieses Quittierungssignal angehängt kann die Satelliten-synchronisierte Uhrzeit zur Einstellung der internen Uhren an die Parkscheinautomaten 1 übertragen werden. Damit ist es möglich, interne Uhren von Parkscheinautomaten 1 zu synchronisieren, deren Zentralen 2 über große Entfernungen und sogar weltweit verteilt angeordnet sind.According to the figure, a multiplicity of devices 1 designed as parking ticket machines are connected to a central station 2 for monitoring the devices 1 by means of a bidirectional data transmission. The center 2 is based, as shown schematically, on a PC system. The standard time predetermining time transmitter 3 is designed as a satellite system whose time signals can be received worldwide. As a receiving means 4 for such a time signal, the center 2 has a GPS receiver. This is the normal time available in each center 2 with designed as a GPS receiver receiving means 4 and indeed in centers 2, which are much farther apart than the receiving range of a radio clock system pretends. If necessary, the internal clocks of the parking ticket machines 1 can now be synchronized in accordance with the normal time available in a central station 2. For this purpose, one already uses existing transmission means 5, which are designed as radio modems for a GSM or GPRS or UMTS radio network. The transmission means allow bidirectional data transmission between the parking ticket machine 1 and the center 2, wherein from the parking ticket machine 1 messages about their status, the cash register or the daily receipts are sent to the central station 2, which is acknowledged by a returned acknowledgment signal. Attached to this acknowledgment signal, the satellite-synchronized time can be transmitted to the parking ticket machines 1 for setting the internal clocks. This makes it possible to synchronize internal clocks of parking ticket machines 1, the centers 2 are arranged over long distances and even distributed worldwide.

Claims (4)

  1. Road traffic technical system, which comprises apparatuses (1) for road traffic synchronised with one another and means for receiving (4) a time signal from a time transmitter (3) specifying a standard time, wherein the apparatuses (1) have internal clocks, the time of day thereof being settable according to the received time signal,
    characterised in that the time transmitter (3) is configured as a satellite system.
  2. System according to claim 1,
    characterised in that the receiving means (4) are arranged in a central system (2), wherein means for transmitting (5) a received time signal from the central system (2) to the internal clocks of the apparatuses (1) are provided.
  3. System according to claim 2,
    characterised in that the transmitting means (5) are configured for the radio transmission of a time signal.
  4. System according to one of claims 1 to 3,
    characterised in that the apparatuses (1) for road traffic synchronised with one another are composed of automatic parking ticket machines connected to a surveillance centre or of control devices for light signal systems, said control devices being connected to a traffic control centre.
EP03729884.1A 2002-05-23 2003-05-12 Street traffic technical system Expired - Lifetime EP1506458B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10222853 2002-05-23
DE10222853A DE10222853A1 (en) 2002-05-23 2002-05-23 Synchronization system for internal clocks of coordinated facilities
PCT/DE2003/001526 WO2003100533A1 (en) 2002-05-23 2003-05-12 Synchronisation system for internal clocks of synchronised devices

Publications (2)

Publication Number Publication Date
EP1506458A1 EP1506458A1 (en) 2005-02-16
EP1506458B1 true EP1506458B1 (en) 2014-04-30

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EP03729884.1A Expired - Lifetime EP1506458B1 (en) 2002-05-23 2003-05-12 Street traffic technical system

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EP (1) EP1506458B1 (en)
DE (1) DE10222853A1 (en)
DK (1) DK1506458T3 (en)
WO (1) WO2003100533A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004035194B4 (en) * 2004-07-21 2006-12-07 Görlitz Ag Method for forwarding time information
WO2011004214A1 (en) * 2009-07-07 2011-01-13 Council Of Scientific & Industrial Research Improved teleclock receiver utilizing mobile telephone network

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521887A (en) * 1993-07-30 1996-05-28 Trimble Navigation Limited Time transfer system
US5677895A (en) * 1994-08-18 1997-10-14 Mankovitz; Roy J. Apparatus and methods for setting timepieces
DE29822429U1 (en) * 1998-12-16 1999-03-04 Siemens Ag Device for synchronizing internal clocks in parking ticket machines
DE19940114B4 (en) * 1999-08-24 2005-12-08 Junghans Uhren Gmbh Method and device for local time display
US6377517B1 (en) * 2000-10-17 2002-04-23 Agilent Technologies Inc. Method and system for synchronizing a time of day clock based on a satellite signal and a communication signal

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Publication number Publication date
DE10222853A1 (en) 2003-12-24
DK1506458T3 (en) 2014-07-21
EP1506458A1 (en) 2005-02-16
WO2003100533A1 (en) 2003-12-04

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