DE1791287C2 - System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices - Google Patents

System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices

Info

Publication number
DE1791287C2
DE1791287C2 DE19671791287 DE1791287A DE1791287C2 DE 1791287 C2 DE1791287 C2 DE 1791287C2 DE 19671791287 DE19671791287 DE 19671791287 DE 1791287 A DE1791287 A DE 1791287A DE 1791287 C2 DE1791287 C2 DE 1791287C2
Authority
DE
Germany
Prior art keywords
interrogation
antenna
circulator
devices
response
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
Application number
DE19671791287
Other languages
German (de)
Other versions
DE1791287B1 (en
Inventor
Wilhelm 8000 Muenchen Grafinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19671791287 priority Critical patent/DE1791287C2/en
Publication of DE1791287B1 publication Critical patent/DE1791287B1/en
Application granted granted Critical
Publication of DE1791287C2 publication Critical patent/DE1791287C2/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02Indicating or recording positions or identities of vehicles or trains
    • B61L25/04Indicating or recording train identities
    • B61L25/045Indicating or recording train identities using reradiating tags

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transceivers (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (1)

Patentanspruch:Claim: System zum selbsttätigen drahtlosen Obertragen von mehrstelligen Informationen zwischen gegeneinander beweglichen Abfrage- und Antwortgeräten, insbesondere der Nummern von Eisenbahnfahrzeugen nach ortsfesten Abfragegeräten, bei dem jedes Abfragegerät in einem vorgegebenen im Mikrowellenbereich gelegenen Frequenzband ein periodisch seine Frequenz veränderndes Abfragesignal aussendet, aus dem das jeweils vorbeibewegte Antwortgerät die der Information zugeordneten Frequenzen durch Filter auswählt, die auf Resonanz für diese Frequenzen abgestimmt sind und für jede Stelle der information eine vorgegebene Anzahl von Antwortfrequenzen zum Abfragegerät zurücksendet, das im Empfangszweig einen Detektor enthält, der das empfangene Antwortsignal gleichrichtet nach Patent 1 279785, dadurch gekennzeichnet, daß für das Abfragegerät (3, 4) eine gemeinsame Antenne (134) für den Sendezweig und den Empfangszweig vorgesehen ist, die über einen Zirkulator (162) einerseits mit dem Sender (15) und andererseits mit dem Empfangsdetektor (20) derart verbunden ist, daß durch den Zirkulator der Sendeweg und der Empfangsweg aufgetrennt werden.System for automatic wireless transmission of multi-digit information between each other mobile interrogation and response devices, in particular the numbers of railway vehicles after stationary interrogation devices, in which each interrogation device in a predetermined im Frequency band located in the microwave range, an interrogation signal which periodically changes its frequency sends out, from which the respectively moving transponder assigned the information Selects frequencies through filters that are tuned to resonance for those frequencies and for each Position of the information sends back a specified number of response frequencies to the interrogation device, which contains a detector in the receiving branch that rectifies the received response signal according to patent 1 279785, characterized in that that for the interrogation device (3, 4) a common antenna (134) for the transmission branch and the receiving branch is provided, which is connected to the transmitter (15) and via a circulator (162) on the one hand on the other hand is connected to the reception detector (20) in such a way that the transmission path through the circulator and the reception path can be separated. 3030th Das Hauptpatent 1 279 785 bezieht sich auf ein System zum selbsttätigen drahtlosen Übertragen von mehrstelltigen Informationen zwischen gegeneinander beweglichen Abfrage- und Antwortgeräten, insbesondere der Nummern von Eisenbahnfahrzeugen nach ortsfesten Abfragegeräten. Bei diesem System soll jedes Abfragegerät in einem vorgegebenen, im Mikrowellenbereich gelegenen Frequenzband ein periodisch seine Frequenz veränderndes Abfragesignal aussenden, aus dem das jeweils vorbeibewegte Antwortgerät die der Information zugeordneten Frequenzen durch Filter auswählt, die auf Resonanz für diese Frequenzen abgestimmt sind, und für jede Stelle der Information eine vorgegebene Anzahl von Antwortfrequenzen zum Abfragegerät zurücksendet, das einen Detektor enthält, der das empfangene Antwortsignal gleichrichtet.The main patent 1 279 785 relates to a system for automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular of the numbers of railway vehicles according to stationary interrogation devices. In this system, everyone should Interrogator in a predetermined frequency band located in the microwave range a periodic send out its frequency changing interrogation signal, from which the responder moving past the Selects frequencies assigned to the information through filters that are tuned to resonance for those frequencies are, and for each point of the information a predetermined number of response frequencies to the interrogator which contains a detector that rectifies the received response signal. Unter anderem wird im Hauptpatent vorgeschlagen, die Antwortgeräte mit einem Hochfrequenzleitungsabschnitt zu versehen, an den jeweils die vor allem als auf Resonanz abgestimmte Stichleitungen ausgebildete Filter für die auszuwählenden Frequenzen angekoppelt sind. Ferner soll der einzelne Hochfrequenzleitungsabschnitt mit wenigstens einer, vorzugsweise als Richtantenne ausgebildeten Antenne versehen sein, die am jeweiligen Antwortgerät so angeordnet ist, daß das Hauptmaximum ihres Strahlungsdiagramms beim Vorbeibewegen des Antwortgerät am Abfragegerät dessen ebenfalls als Richtantenne ausgebildete Sende- und Empfangsantenne überstreicht.Among other things, it is proposed in the main patent, the transponders with a high-frequency line section to be provided on each of the filters, which are primarily designed as stub lines that are tuned to resonance are coupled for the frequencies to be selected. Furthermore, the individual high-frequency line section should be provided with at least one antenna, preferably designed as a directional antenna, which is attached to the respective Transponder is arranged so that the main maximum of their radiation pattern when moving past of the transponder on the interrogator is also designed as a directional antenna transmitting and Receiving antenna swept over. Wenn ein derartiges System beispielsweise auf einem Rangierbahnhof betrieben wird, so kann durch widrige Umstände manchmal der Fall eintreten, daß durch reflektierende Wände des betreffenden Eisenbahnfahrzeugs Reflexionen ajftreten, die den Empfang des Abfragesignals durch das Abfragegerät unmöglich machen. Diesen Schwierigkeiten kann durch in der Stammanmeldung beschriebene Maßnahmen begegnet werden.If such a system is operated, for example, in a marshalling yard, then adverse Circumstances sometimes arise that are caused by reflective walls of the railway vehicle in question Reflections occur which make it impossible for the interrogator to receive the interrogation signal. These difficulties can be countered by the measures described in the parent application will. Der Erfindung liegt die Aufgabe zugrunde, bei einem System der einleitend beschriebenen Art den Aufwand an Antennen gegenüber dem Gegenstand des Hauptpatentes zu senken.The invention is based on the problem of reducing the effort in a system of the type described in the introduction to lower antennas compared to the subject of the main patent. Die Erfindung besteht darin, daß für das Abfragegerät eine gemeinsame Antenne für den Sendezweig und den Empfangszweig vorgesehen ist, die über einen Zirkulator einerseits mit dem Sender und andererseits mit dem Empfangsdetektor derart verbunden ist, daß durch den Zirkulator der Sendeweg und der Empfangsweg aufgetrennt werden.The invention consists in that a common antenna for the transmission branch and for the interrogator the receiving branch is provided, which on the one hand with the transmitter and on the other hand with a circulator the reception detector is connected in such a way that the transmission path and the reception path through the circulator be separated. An Hand der Zeichnung ist nachstehend ein Ausfilhrungsbeispiel der Erfindung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. Die Zeichnung zeigt schematisch ein Ausführungsbeispiel für ein Abfragegerät mit einer Richtantenne, die in beiden Richtungen arbeitetThe drawing shows schematically an embodiment for an interrogation device with a directional antenna, that works in both directions Für zum Hauptpatent gleiche Einrichtungen sind die gleichen Bezugszeichen verwendet.The same reference numerals are used for devices that are the same as the main patent. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung bei einem Abfragegerät 3 mit nur einer Antenne 134, die sowohl zum Senden des Abfragesignals als auch zum Empfangen des Antwortsignals benutzt wird. Hierzu ist gemäß der Erfindung ein Zirkulator 162 vorgesehen, der die Leistung des Abfragesignals zur Antenne 134 überträgt. Die Antenne soll einen vom Wellenwiderstand Z der Leitung zwischen Zirkulator und Antenne verschiedenen Eingangswiderstand haben, so daß ein Teil der Mikrowellenenergie des Abfragesignals zum Zirkulator reflektiert wird. Der Zirkulator überträgt die reflektierte Mikrowellenenergie gemeinsam mit der Empfangsenergie des über die Antenne 134 hereinkommenden Antwortsignals zum Detektor 20. Die so erhaltenen beiden Signale werden durch den Detektor gleichgerichtet. J The drawing shows an embodiment of the invention in an interrogation device 3 with only one antenna 134, which is used both for sending the interrogation signal and for receiving the response signal. For this purpose, a circulator 162 is provided according to the invention, which transmits the power of the interrogation signal to the antenna 134. The antenna should have an input resistance different from the characteristic impedance Z of the line between the circulator and antenna, so that part of the microwave energy of the interrogation signal is reflected to the circulator. The circulator transmits the reflected microwave energy together with the received energy of the response signal coming in via the antenna 134 to the detector 20. The two signals thus obtained are rectified by the detector. J Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE19671791287 1967-03-20 1967-03-20 System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices Expired DE1791287C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19671791287 DE1791287C2 (en) 1967-03-20 1967-03-20 System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671791287 DE1791287C2 (en) 1967-03-20 1967-03-20 System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices

Publications (2)

Publication Number Publication Date
DE1791287B1 DE1791287B1 (en) 1975-03-13
DE1791287C2 true DE1791287C2 (en) 1975-11-13

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Application Number Title Priority Date Filing Date
DE19671791287 Expired DE1791287C2 (en) 1967-03-20 1967-03-20 System for the automatic wireless transmission of multi-digit information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833509A1 (en) * 1978-07-31 1980-02-14 Siemens Ag Identifying and locating device for objects and persons - has mark on object interrogated and received signal is processed and evaluated
EP0111591A1 (en) * 1982-12-23 1984-06-27 ANT Nachrichtentechnik GmbH Device for the transmission of information between objects passing one another

Also Published As

Publication number Publication date
DE1791287B1 (en) 1975-03-13

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8340 Patent of addition ceased/non-payment of fee of main patent