EP0111592B1 - Automatic information system for mobile objects - Google Patents

Automatic information system for mobile objects Download PDF

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Publication number
EP0111592B1
EP0111592B1 EP82111965A EP82111965A EP0111592B1 EP 0111592 B1 EP0111592 B1 EP 0111592B1 EP 82111965 A EP82111965 A EP 82111965A EP 82111965 A EP82111965 A EP 82111965A EP 0111592 B1 EP0111592 B1 EP 0111592B1
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EP
European Patent Office
Prior art keywords
unit
response
response unit
frequency
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
Application number
EP82111965A
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German (de)
French (fr)
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EP0111592A1 (en
Inventor
Rudolf Dipl.-Ing. Polzer
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Bosch Telecom GmbH
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ANT Nachrichtentechnik GmbH
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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to AT82111965T priority Critical patent/ATE25950T1/en
Priority to EP82111965A priority patent/EP0111592B1/en
Priority to DE8282111965T priority patent/DE3275712D1/en
Priority to US06/563,745 priority patent/US4630044A/en
Priority to CA000444139A priority patent/CA1221154A/en
Publication of EP0111592A1 publication Critical patent/EP0111592A1/en
Application granted granted Critical
Publication of EP0111592B1 publication Critical patent/EP0111592B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B61L25/043—Indicating or recording train identities using inductive tags

Definitions

  • the present invention relates to an automatic information system for mobile objects, consisting of response units arranged on the mobile objects, in which information about the respective object is stored, and at least one interrogation unit which, when passing through a response unit, transmits a carrier signal of a first frequency to the latter Energy for the power supply of the electrical circuit parts of the response unit is used, the response unit sending out a response signal modulated with the stored information of a second frequency to the interrogation unit.
  • a ferrite rod antenna is installed on each response unit to receive the carrier signal emitted by the interrogation unit.
  • the response unit also has a second antenna, namely for sending a response signal to the query unit.
  • This response unit is spacious and complex, which is why it is not well suited for flexible use.
  • the invention is based on the object of designing the response unit of the automatic control system of the type mentioned at the outset in such a way that it obtains a compact, easily manageable shape in order to enable flexible use on a wide variety of mobile objects.
  • the response unit according to the invention can therefore be constructed in a very handy form, because it does not require its own energy source and, moreover, only a single antenna in the form of an induction coil in order both to receive a signal supplying the operating voltage and to transmit an information signal to an interrogation unit.
  • the automatic information system mentioned at the beginning can be used to identify mobile objects such as identify rail-bound vehicles or goods moving with conveyor belts or the like.
  • the information system can also be used to direct mobile objects to specific locations intended for them.
  • information (address of goods to be shipped, size and shape of a motor part, etc.) must be requested from each of the objects to be transported to different locations, with which the desired transport destination is linked.
  • the mobile objects are equipped with response units in which information relating to the desired destinations can be stored for the respective object.
  • an interrogation unit which reads the information from its response units as the objects pass and transmits them to a central computer, which then takes over control of the transport route.
  • the input of the response unit AW contains two resonance circuits, a first of which consists of an inductor L1 and a capacitor C connected in parallel thereto and a second of the inductor L1 which is formed of this capacitor C connected in parallel and a further inductor L2 connected in series.
  • these two inductors are realized by a single induction coil provided with a tap.
  • the induction coil fulfills the task as a receiving antenna for a carrier signal of frequency f 1 ′ generated and emitted by the oscillator 01 of the interrogation unit AF.
  • the second resonance circuit composed of the inductors L1, L2 and the capacitance C is tuned to this frequency f 1 .
  • a rectifier D is connected to this second resonance circuit, which converts the carrier signal of frequency f 1 into a DC supply voltage VS for the electronic components of the response unit. If the response unit AW now receives a carrier signal of frequency f 1 while driving past the interrogation unit AF, the one stored in the memory S becomes Information using a modulator M modulates a carrier signal of frequency f 2 , which comes from an oscillator 02.
  • the induction coil which together with the capacitance C forms a resonance circuit tuned to precisely this frequency f 2 , sends the information signal to the interrogation unit AF.
  • the interrogation unit has the same resonance circuits tuned to the frequencies f 1 and f 2 as the response unit.
  • the interrogation unit is expediently also equipped with only a single induction coil, which is both part of the first resonance circuit and part of the second resonance circuit.
  • the information signal received by the interrogation unit via the induction coil reaches a demodulator DM, at the output of which the information can be tapped from the memory S of the response unit.
  • the detected information is finally transmitted to a central computer, which then carries out the route control for the mobile objects.
  • the response unit AW is provided with only one induction coil as an antenna for receiving the energy signal and for transmitting the information signal. 2, a very compact and easy-to-use design for the response unit AW is possible.
  • the electronic circuit parts of the response unit are housed in a cuboid, flat housing, around the narrow sides of which the induction coil IS is wound. A trench-shaped indentation in the narrow sides of the housing gives the induction coil a secure hold.
  • a switch or keypad TF is arranged as an input unit (designated E in FIG. 1) for the memory. If a response unit is attached to a mobile object, the current information of the respective object can always be entered into the memory manually using the switch or keypad. The entry into the memory can also be done remotely by means of an opto or ultrasound transmitter. Instead of the keypad TF, the housing would then have to be provided with an opto or ultrasound receiving element.
  • a visual display AZ on the front rivet of the housing provides information about all or part of the memory content.
  • the information that is to be written into the memory can also be transmitted from the interrogation unit to the response unit by modulating this information onto the carrier signal in the interrogation unit.
  • Another external station can also transmit a carrier wirelessly or via a conductor which can be connected to the response unit and to which the information for the memory of the response unit is modulated.
  • Adhesive elements e.g. Magnetic stripes are attached, which allow the response units to be quickly attached to a mobile object (railway wagons, containers, etc.).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

An automatic information transmission system for a mobile object, the system including a response unit arranged to be carried along with the mobile object, and an interrogation unit arranged to be disposed alongside the path of movement of the mobile object for movement of the response unit past the interrogation unit. The interrogation unit is arranged to emit a carrier signal at a first frequency and to receive a signal at a second frequency different from the first frequency. The response unit includes a memory for storing information relating to the mobile object, a signal generator connected to the memory for generating a signal at the second frequency and containing the stored information, a signal receiver for receiving the carrier signal at the first frequency emitted by the interrogation unit, an emitter connected to the signal generator for emitting the signal generated thereby, and an energy converter connected between the signal receiver and signal generator for deriving operating power for the generator from the carrier signal at the first frequency.

Description

Die vorliegende Erfindung betrifft ein automatisches Informationssystem für mobile Objekte, bestehend aus an den mobilen Objekten angeordneten Antworteinheiten, in denen Informationen über das jeweilige Objekt abgespeichert sind, und mindestens einer Abfrageeinheit, die beim Passieren einer Antworteinheit an diese ein Trägersignal einer ersten Frequenz überträgt, dessen Energie für die Stromversorgung der elektrischen Schaltungsteile der Antworteinheit ausgenutzt wird, wobei die Antworteinheit ein mit der gespeicherten Information moduliertes Antwortsignal einer zweiten Frequenz an die Abfrageeinheit aussendet.The present invention relates to an automatic information system for mobile objects, consisting of response units arranged on the mobile objects, in which information about the respective object is stored, and at least one interrogation unit which, when passing through a response unit, transmits a carrier signal of a first frequency to the latter Energy for the power supply of the electrical circuit parts of the response unit is used, the response unit sending out a response signal modulated with the stored information of a second frequency to the interrogation unit.

Ein derartiges Informationssystem mit Abfrage-und Antworteinheiten ist aus IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Band VT-19, Nr. 1, February 1970, Seiten 128-136 bekannt. Eine praktische Ausführung einer Antworteinheit, mit der ein zu identifizierendes Objekt bestückt wird, und vor allem eine Gestaltung der Antennen, mit denen die Antworteinheit das Abfragesignal empfängt und das Antwortsignal aussendet, enthält die genannte Veröffentlichung nicht.Such an information system with query and response units is known from IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Volume VT-19, No. 1, February 1970, pages 128-136. The publication does not contain a practical version of a response unit with which an object to be identified is fitted, and above all a design of the antennas with which the response unit receives the interrogation signal and emits the response signal.

Aus der US-A- 4 333 072 ist ein Informationssystem mit einer Abfrageeinheit und einer Antworteinheit bekannt, wobei die Abfrageeinheit über eine an ihr vorhandene Spule ein Signal einer bestimmten Frequenz in eine Spule an der Antworteinheit induziert. Die Antworteinheit belastet ihre Spule in Abhängigkeit der in ihr vorhandenen Information. Diese informationsabhängige Belastung wirkt induktiv auf die Spule der Abfrageeinheit zurück, wo sie dann detektiert und ausgewertet wird.From US-A-4 333 072 an information system with an interrogation unit and a response unit is known, the interrogation unit inducing a signal of a certain frequency into a coil on the response unit via a coil present on it. The response unit loads its coil depending on the information it contains. This information-dependent load has an inductive effect on the coil of the interrogation unit, where it is then detected and evaluated.

Bei einem aus der DE-OS 28 46 129 bekannten Informationssystem ist zum Empfang des von der Abfrageeinheit ausgesendeten Trägersignals an jeder Antworteinheit eine Ferritstabantenne installiert. Die Antworteinheit besitzt aber noch eine zweite Antenne, nämlich zum Aussenden eines Antwortsignals an die Abfrageeinheit. Diese Antworteinheit ist großräumig und aufwendig gestaltet, weshalb sie für einen flexiblen Einsatz nicht gut geeignet ist.In an information system known from DE-OS 28 46 129, a ferrite rod antenna is installed on each response unit to receive the carrier signal emitted by the interrogation unit. However, the response unit also has a second antenna, namely for sending a response signal to the query unit. This response unit is spacious and complex, which is why it is not well suited for flexible use.

Der Erfindung liegt nun die Aufgabe zugrunde, die Antworteinheit des automatischen Leitsystems der eingangs genannten Art so auszubilden, dan es eine kompakte, leicht handhabbare Gestalt erhält, um einen flexiblen Einsatz an verschiedensten mobilen Objekten zu ermöglichen.The invention is based on the object of designing the response unit of the automatic control system of the type mentioned at the outset in such a way that it obtains a compact, easily manageable shape in order to enable flexible use on a wide variety of mobile objects.

Erfindungsgemäß wird diese Aufgabe durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.According to the invention, this object is achieved by the features specified in the characterizing part of claim 1.

Zweckmäßige Ausführungen und Anwendungen der Erfindung gehen aus den Unteransprüchen hervor.Appropriate designs and applications of the invention emerge from the subclaims.

Die erfindungsgemäße Antworteinheit läßt sich deshalb in einer sehr handlichen Form aufbauen, weil eben keine eigene Energiequelle und außerdem nur eine einzige Antenne in Form einer Induktionsspule benötigt wird, um sowohl ein die Betriebsspannung lieferndes Signal zu empfangen als auch ein Informationssignal an eine Abfrageeinheit auszusenden.The response unit according to the invention can therefore be constructed in a very handy form, because it does not require its own energy source and, moreover, only a single antenna in the form of an induction coil in order both to receive a signal supplying the operating voltage and to transmit an information signal to an interrogation unit.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels wird nun die Erfindung näher erläutert. Es zeigen:

  • Fig. 1 die Prinzipschaltbilder einer Abfrage- und einer Antworteinheit und
  • Fig. 2 die äußere Gestalt einer Antworteinheit.
The invention will now be explained in more detail with reference to an embodiment shown in the drawing. Show it:
  • Fig. 1 shows the block diagrams of a query and a response unit and
  • Fig. 2 shows the outer shape of a response unit.

Das zu Beginn angesprochene automatische Informationssystem kann dazu verwendet werden, mobile Objekte, wie z.B. schienengebundene Fahrzeuge oder mit Transportbändern bewegte Güter oder dergleichen zu identifizieren. Auch kann das Informationssystem ausgenutzt werden, um mobile Objekte an bestimmte diesen zugedachte Orte zu leiten.The automatic information system mentioned at the beginning can be used to identify mobile objects such as identify rail-bound vehicles or goods moving with conveyor belts or the like. The information system can also be used to direct mobile objects to specific locations intended for them.

Um ein solches Leitsystem zu realisieren, muß von jedem der an unterschiedliche Orte zu transportierenden Objekte eine Information (Adresse von zu versendenden Gütern, Größe und Form eines Motageteils etc.) abgefragt werden, mit der das gewünschte Transportziel verknüpft ist. Zu diesem Zweck werden die mobilen Objekte mit Antworteinheiten bestückt, in denen auf gewünschte Bestimmungsorte hinweisende Informationen des jeweiligen Objektes abgespeichert werden können. An einer Stelle an der Transportstrecke ist eine Abfrageeinheit postiert, welche beim Vorbeifahren der Objekte aus deren Antworteinheiten die Informationen herausliest und sie einem Zentralrechner übermittelt, der dann die Steuerung des Transportweges übernimmt.In order to implement such a control system, information (address of goods to be shipped, size and shape of a motor part, etc.) must be requested from each of the objects to be transported to different locations, with which the desired transport destination is linked. For this purpose, the mobile objects are equipped with response units in which information relating to the desired destinations can be stored for the respective object. At one point on the transport route there is an interrogation unit which reads the information from its response units as the objects pass and transmits them to a central computer, which then takes over control of the transport route.

Wie die Abfrageeinheit AF und die Antworteinheit AW prinzipiell aufgebaut sind, kann man der Fig. 1 entnehmen. Der Eingang der Antworteinheit AW enthält zwei Resonanzkreise, von denen ein erster aus einer Induktivität L1 und einer zu dieser parallel geschalteten Kapazität C besteht und ein zweiter aus der Induktivität L1, der dieser parallelgeschalteten Kapazität C und einer weiteren in Reihe geschalteten Induktivität L2 gebildet ist. Erfindungsgemäß sind diese beiden Induktivitäten durch eine einzige mit einer Anzapfung versehenen Induktionsspule realisiert.How the query unit AF and the response unit AW are constructed in principle can be seen in FIG. 1. The input of the response unit AW contains two resonance circuits, a first of which consists of an inductor L1 and a capacitor C connected in parallel thereto and a second of the inductor L1 which is formed of this capacitor C connected in parallel and a further inductor L2 connected in series. According to the invention, these two inductors are realized by a single induction coil provided with a tap.

Die Induktionsspule erfüllt die Aufgabe als Empfangsantenne für ein vom Oszillator 01 der Abfrageeinheit AF erzeugtes und abgestrahltes Trägersignal der Frequenz f1' Auf diese Frequenz f1 ist der zweite sich aus den Induktivitäten L1, L2 und der Kapazität C zusammensetzende Resonanzkreis abgestimmt. An diesen zweiten Resonanzkreis ist ein Gleichrichter D angeschlossen, der das Trägersignal der Frequenz f1 in eine Versorgungsgleichspannung VS für die elektronischen Bauelemente der Antworteinheit umwandelt. Wenn nun die Antworteinheit AW beim Vorbeifahren an der Abfrageeinheit AF ein Trägersignal der Frequenz f1 empfängt, wird die im Speicher S abgelegte Information mit Hilfe eines Modulators M einem Trägersignal der Frequenz f2, das von einem Oszillator 02 stammt, aufmoduliert.The induction coil fulfills the task as a receiving antenna for a carrier signal of frequency f 1 ′ generated and emitted by the oscillator 01 of the interrogation unit AF. The second resonance circuit composed of the inductors L1, L2 and the capacitance C is tuned to this frequency f 1 . A rectifier D is connected to this second resonance circuit, which converts the carrier signal of frequency f 1 into a DC supply voltage VS for the electronic components of the response unit. If the response unit AW now receives a carrier signal of frequency f 1 while driving past the interrogation unit AF, the one stored in the memory S becomes Information using a modulator M modulates a carrier signal of frequency f 2 , which comes from an oscillator 02.

Die Induktionsspule, welche ja mit der Kapazität C zusammen einen auf genau diese Frequenz f2 abgestimmten Resonanzkreis bildet, sendet das Informationssignal an die Abfrageeinheit AF aus.The induction coil, which together with the capacitance C forms a resonance circuit tuned to precisely this frequency f 2 , sends the information signal to the interrogation unit AF.

Die Abfrageeinheit besitzt die gleichen auf die Frequenzen f1 und f2 abgestimmten Resonanzkreise wie die Antworteinheit. Zweckmäßigerweise ist die Abfrageeinheit auch nur mit einer einzigen Induktionsspule ausgestattet, die sowohl Teil des ersten Resonanzkreises als auch Teil des zweiten Resonanzkreises ist. Das von der Abfrageeinheit über die Induktionsspule empfangene Informationssignal gelangt zu einem Demodulator DM, an dessen Ausgang die Information aus dem Speicher S der Antworteinheit abgreifbar ist. Die detektierte Information wird schließlich zu einem Zentralrechner übertragen, der dann die Wegesteuerung für die mobilen Objekte vornimmt.The interrogation unit has the same resonance circuits tuned to the frequencies f 1 and f 2 as the response unit. The interrogation unit is expediently also equipped with only a single induction coil, which is both part of the first resonance circuit and part of the second resonance circuit. The information signal received by the interrogation unit via the induction coil reaches a demodulator DM, at the output of which the information can be tapped from the memory S of the response unit. The detected information is finally transmitted to a central computer, which then carries out the route control for the mobile objects.

Es erweist sich als sehr vorteilhaft, daß die Antworteinheit AW als Antenne für den Empfang des Energiesignals und für das Aussenden des Informationssignals nur mit einer Induktionsspule versehen ist. Damit ist, wie die Fig. 2 verdeutlicht, eine sehr kompakte und gut handhabbare Bauweise für die Antworteinheit AW möglich. Dabei sind die elektronischen Schaltungsteile der Antworteinheit in einem quaderförmigen, flachen Gehäuse untergebracht, um dessen Schmalseiten die Induktionsspule IS gewickelt ist. Eine grabenförmige Eindellung in den Schmalseiten des Gehäuses verleiht der Induktionsspule einen sicheren Halt.It has proven to be very advantageous that the response unit AW is provided with only one induction coil as an antenna for receiving the energy signal and for transmitting the information signal. 2, a very compact and easy-to-use design for the response unit AW is possible. The electronic circuit parts of the response unit are housed in a cuboid, flat housing, around the narrow sides of which the induction coil IS is wound. A trench-shaped indentation in the narrow sides of the housing gives the induction coil a secure hold.

An der Vorderseite des Gehäuses ist ein Schalter- oder Tastenfeld TF als Eingabeeinheit (in Fig. 1 mit E bezeichnet) für den Speicher angeordnet. Wenn eine Antworteinheit an ein mobiles Objekt angehängt wird, können stets per Hand die aktuellen Informationen des jeweiligen Objekts über das Schalter- oder Tastenfeld in den Speicher eingegeben werden. Auch kann die Eingabe in den Speicher aus der Ferne mittels eines Opto- oder Ultraschallsenders erfolgen. Anstelle des Tastenfeldes TF wäre dann das Gehäuse mit einem Opto- oder Ultraschallempfangselement zu versehen. Eine optische Anzeige AZ an der Vordersiete des Gehäuses gibt Auskunft über den ganzen oder einen Teil des Speicherinhalts.At the front of the housing, a switch or keypad TF is arranged as an input unit (designated E in FIG. 1) for the memory. If a response unit is attached to a mobile object, the current information of the respective object can always be entered into the memory manually using the switch or keypad. The entry into the memory can also be done remotely by means of an opto or ultrasound transmitter. Instead of the keypad TF, the housing would then have to be provided with an opto or ultrasound receiving element. A visual display AZ on the front rivet of the housing provides information about all or part of the memory content.

Die Information, die in den Speicher eingeschrieben werden soll, kann auch von der Abfrageeinheit an die Antworteinheit übertragen werden, indem man dem Trägersignal in der Abfrageeinheit diese Information aufmoduliert. Auch kann von einer anderen externen Station ein Träger drahtlos oder über einen mit der Antworteinheit verbindbaren Leiter ausgesendet werden, dem die Information für den Speicher der Antworteinheit aufmoduliert ist. An der Rückseite des Gehäuses könnten Haftelemente, z.B. Magnetstreifen, angebracht werden, die ein schnelles Anheften der Antworteinheiten an ein mobiles Objekt (Eisenbahnwagen, Kontainer etc.) ermöglichen.The information that is to be written into the memory can also be transmitted from the interrogation unit to the response unit by modulating this information onto the carrier signal in the interrogation unit. Another external station can also transmit a carrier wirelessly or via a conductor which can be connected to the response unit and to which the information for the memory of the response unit is modulated. Adhesive elements, e.g. Magnetic stripes are attached, which allow the response units to be quickly attached to a mobile object (railway wagons, containers, etc.).

Claims (10)

1. Automatic information system for mobile objects, comprising response units disposed at the mobile objects and containing stored informations regarding the respective object, and at least one sensor unit which, upon passing a response unit, transmits a carrier signal at a first frequency to the response unit, the energy of the carrier signal being utilized to supply the electrical circuit components of the response unit with current, with the response unit transmitting unit a response signal at a second frequency and modulated with the stored information to the sensor unit, characterized in that the response unit (AW) is equipped with a single induction coil (IS) which serves as the antenna for receiving the carrier signal transmitted by the sensor unit (AF) as well for transmitting the response signal, with the induction coil being part of a first resonant circuit oscillating at the frequency (f,) of the carrier signal and part of a second resonant circuit oscillating at the frequency (f2) of the response signal.
2. System according to claim 1, characterized in that the induction coil (IS) is provided with a tap which is connected with a capacitance (C).
3. System according to claim 1, characterized in that the induction coil (IS) is wound around a housing whose interior accommodates the electronic components of the response unit (AW), with the visible frontal face of the housing being equipped with an optical display for the actual memory content and with a device (TF) for inputting information into the memory (S), with adhesive elements for fastening the housing to a mobile object being disposed on the rear of the housing.
4. System according to claim 3, characterized in that the device for inputting information into the memory is a field of switches or keys (TF).
5. System according to claim 3, characterized in that the device for inputting information into the memory (S) is an optical or ultrasound receiving element which receives the memory information from a remote optical or ultrasound transmitter.
6. System according to claim 1, characterized in that the carrier signal transmitted by the sensor unit (AF) is modulated with information which is to be recorded in the memory of the response unit (AW).
7. System according to claim 1, characterized in that an external unit transmits an electrical carrier signal wirelessly or over a conductor that can be connected with the response unit, with such carrier signal being modulated with the information that is written into the memory of the response unit.
8. System according to one of claims 1 to 7, characterized in that it is used for switching railbound freight cars.
9. System according to one of claims 1 to 7, characterized in that it is used for switching containers.
10. System according to one of claims 1 to 7, characterized in that it is used for supplying goods or parts to be assembled to defined locations.
EP82111965A 1982-12-23 1982-12-23 Automatic information system for mobile objects Expired EP0111592B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT82111965T ATE25950T1 (en) 1982-12-23 1982-12-23 AUTOMATIC INFORMATION SYSTEM FOR MOBILE OBJECTS.
EP82111965A EP0111592B1 (en) 1982-12-23 1982-12-23 Automatic information system for mobile objects
DE8282111965T DE3275712D1 (en) 1982-12-23 1982-12-23 Automatic information system for mobile objects
US06/563,745 US4630044A (en) 1982-12-23 1983-12-21 Programmable inductively coupled transponder
CA000444139A CA1221154A (en) 1982-12-23 1983-12-22 Automatic information transmission system for mobile object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82111965A EP0111592B1 (en) 1982-12-23 1982-12-23 Automatic information system for mobile objects

Publications (2)

Publication Number Publication Date
EP0111592A1 EP0111592A1 (en) 1984-06-27
EP0111592B1 true EP0111592B1 (en) 1987-03-18

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EP82111965A Expired EP0111592B1 (en) 1982-12-23 1982-12-23 Automatic information system for mobile objects

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US (1) US4630044A (en)
EP (1) EP0111592B1 (en)
AT (1) ATE25950T1 (en)
CA (1) CA1221154A (en)
DE (1) DE3275712D1 (en)

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ATE25950T1 (en) 1987-04-15
CA1221154A (en) 1987-04-28
US4630044A (en) 1986-12-16
DE3275712D1 (en) 1987-04-23
EP0111592A1 (en) 1984-06-27

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