EP0412286A2 - Route-selective reproduction method for digitally coded messages transmitted from a transmitter to a vehicle receiver, and corresponding vehicle receiver - Google Patents
Route-selective reproduction method for digitally coded messages transmitted from a transmitter to a vehicle receiver, and corresponding vehicle receiver Download PDFInfo
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- EP0412286A2 EP0412286A2 EP19900112540 EP90112540A EP0412286A2 EP 0412286 A2 EP0412286 A2 EP 0412286A2 EP 19900112540 EP19900112540 EP 19900112540 EP 90112540 A EP90112540 A EP 90112540A EP 0412286 A2 EP0412286 A2 EP 0412286A2
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- Prior art keywords
- transit time
- runtime
- values
- route
- transmitter
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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
- G08G1/091—Traffic information broadcasting
- G08G1/092—Coding or decoding of the information
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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
- G08G1/091—Traffic information broadcasting
- G08G1/093—Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
- H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
Definitions
- the invention relates to a method for the route-selective playback of digitally coded traffic messages transmitted from a transmitter to a vehicle receiver according to the preamble of patent claim 1.
- a traffic radio decoder known from DE-OS 35 36 820 is set up for processing digitally coded signals which are obtained by demodulating an auxiliary carrier which is broadcast together with an FM radio transmitter.
- the decoded traffic messages can be broadcast without interruption programs are continuously broadcast and by transmitting standardized texts it is possible to transmit a large number of traffic reports from different regions.
- the driver is usually only interested in the traffic news that relates to his route. It has therefore already been proposed to select the traffic messages according to the intended route, route names serving as the highest hierarchical level for local narrowing of the traffic messages.
- the driver By comparing the route guidance names contained in the traffic news with corresponding characteristics of the route, the driver is able to select only the traffic news relevant to him.
- the information about the route, which is required when selecting the traffic news could either be entered manually via an input device or automatically by a navigation device, such as that e.g. has become known under the name "Travel Pilot".
- the "travel pilot” needs additional devices in the vehicle, such as wheel sensors and magnetic field sensors.
- a location determination solely by means of the different runtime values of the transmitters that can be received at the respective vehicle location is known from the conference report "Electronics in motor vehicles", Baden Baden conference, September 8-9, 1988, VDI reports 687.
- the method described there represents hyper-location of the vehicle location via the radio transmitter transmitting an RDS data telegram.
- the term hyper-location is based on the fact that the points of the same transit time differences between two transmitters lie on an imaginary hyperbola. By including a third transmitter, intersections between the individual hyperbolas are obtained, which indicate the respective reception location.
- a prerequisite for such a location is that the transmitters involved in the location are synchronized in their modulation. This can be done, for example, in that the transmitters work individually with highly precise time references or else synchronously by means of a common time reference be settled, the transit time differences between the common reference and the transmitters being compensated for by time delay elements.
- Hyper-location requires a considerable amount of computing effort on the receiving side, which greatly increases the amount of equipment and thus also the manufacturing costs on the receiving side, making it unattractive for the consumer sector.
- the invention is therefore based on the object of improving a method according to the preamble of claim 1 in such a way that location is considerably simplified via the transit time values of the transmitters receivable at a vehicle location.
- a coordinate network is first placed over the area relevant to the driver and the runtime values of the receivable transmitters and their modulation synchronized are determined for the individual coordinate points. This can be done by simple conversion the distances of the coordinate points to the individual transmitter locations are carried out in runtime values. The runtime values obtained in this way are now stored in a table in the receiver and compared with the determined runtime values. The coordinates whose runtime values come closest to the measured runtime values are then selected as the location.
- relative runtime values can be stored that relate to the transmitter with the lowest runtime.
- At least one periodically transmitted bit contained in the digital data stream is preferably used for the transit time measurement, the bit transmitted by the transmitter with the lowest transit time starting a clock with the round trip time equal to the repetition time of the bit.
- the bits then transmitted by the other transmitters set time stamps on the time scale of the clock.
- the clock is restarted after each repetition of the first arriving bit, so that no high demands have to be made on the absolute time base.
- the RDS transmitters included in the location which transmit digitally coded traffic messages in the RDS data telegram
- their frequencies and the program identification codes are suitable.
- a clear assignment of the transmitters is achieved, which also enables a rough determination of the area. It is particularly advantageous if the coordinates determining the respective vehicle location are assigned directly to the location addresses in the TMC code of a comparator for predetermined route guidance names, so that the traffic messages are limited to the route without converting or converting the location coordinates to addresses in the TMC code for route guidance names is possible.
- the invention further relates to a vehicle receiver according to the preamble of claim 8.
- Fig. 1 shows a map section of the southern part of the state of Lower Saxony, in which the existing federal highways, larger cities and transmitter locations Stadthagen, Hanover and Harz are entered.
- the three stations broadcast the program from NDR2, namely Stadthagen on 102.6 MHz, Hannover on 96.2 MHz and Harz on 92.1 MHz.
- the program identification code D3C2 is assigned to all three transmitters for the NDR2 program.
- the map section in which all three transmitters can be received from one vehicle is covered with a coordinate network in which the coordinates running in the north-south direction are designated Y and the coordinates running in the east-west direction are designated X.
- the coordinate network has a grid of 10 x 10 km. The transit times between the three transmitters mentioned are assigned to each intersection of the coordinate network.
- the on the coordinate intersection X3 and Y4 the following group of runtime values: for 96.2 MHz 73.3 ⁇ sec, for 102.6 MHz 170.7 ⁇ sec and for 92.1 MHz 186.7 ⁇ sec. If this group of values is referred back to the transmitter with the lowest runtime, a short table results, in which the frequency 96.2 MHz the runtime value 0, the frequency 102.6 MHz the runtime value 93.4 usec and the frequency 92.1 MHz Runtime value 109.4 usec is assigned.
- This short table is sufficient for the location determination and has the advantage that it requires a third less memory capacity in the runtime value memory of the receiver.
- the determined runtime values are compared with the stored runtime values.
- the value group is selected that has the greatest agreement for all three values.
- the coordinate point assigned to this value group then corresponds to the location of the recipient or the vehicle.
- Position can be determined by interpolation of the four coordinates. For a comprehensive application of the method, it would be necessary to extend the coordinate network further than shown here on the map section and to record and save all receivable synchronized transmitters with respect to their runtime values in corresponding tables.
- FIG. 2 shows a diagram to illustrate the combination of carrier oscillation, bit, block and group in the RDS data telegram.
- 48 oscillation periods correspond to one bit.
- 26 bits form a block and 4 blocks form an RDS group. From the context it follows that the RDS groups of 87.578 msec are repeated.
- FIG. 3 illustrates the process flow of the method according to the invention.
- At least three transmitters are received by a vehicle receiver and here the RDS data telegrams are fed to a decoder.
- a clock with the round trip time of 87.578 msec is started at transmitter A with the lowest transit time and time marks are set on the time scale by the bits of the other transmitters B and C.
- the time differences between the receiver location and the locations of the individual transmitters result from the time stamps.
- the closest values are determined on the basis of a short table, to which a specific location with the coordinates X and Y assigned.
- the coordinates determined are now used to address a comparator for location addresses, which allows to select from the so-called traffic message channel (TMC) and still unselected traffic messages those that are relevant for the intended route of the driver.
- TMC traffic message channel
- FIG. 4 shows the block diagram of a vehicle receiver, the illustration being limited to the reproduction of the structural unit that is required to display traffic news.
- a receiving device 14 can be tuned to the transmitters receivable in a reception area.
- the receiving device 14 either contains a plurality of receiving parts tuned simultaneously to different transmitters or a receiving part which can be switched over in multiplex mode.
- the receiving device 14 is followed by a decoder 10 which decodes the digitally encoded data stream.
- the so-called traffic message channel (TMC) which contains the traffic news, is evaluated in particular.
- the decoder also evaluates the Reception frequency and the program identification code.
- the decoder 10 can also consist of a plurality of parallel decoder parts or can be designed as a decoder which can be switched over in multiplex mode.
- the decoder 10 is followed by a comparator 12, to which, on the one hand, the complete transmitted traffic messages are supplied by the decoder 10 and, on the other hand, features of the route are entered. From these two pieces of information, those traffic messages that are relevant for the intended route are selected by comparison and these traffic messages are conveyed to the driver optically or acoustically via the output device 18.
- the indication of the route is determined by determining the location by measuring the transit time of the receivable transmitter. For this purpose, a periodically transmitted bit in the digital data stream is fed from the decoder 10 to a transit time measuring device 16. The bit arrives several times, both from the transmitter with the lowest transit time and from the other transmitters with longer transit times. Due to the time difference between the arrival of the perio Periodically recurring bits are used to determine runtime values or runtime difference values which are fed to a runtime comparator 22.
- the transit time measuring device 16 comprises a control circuit 26 which controls a clock 24.
- the clock 24 is started via the control circuit 26 by the bit transmitted by the transmitter with the lowest transit time.
- the bits transmitted by the other transmitters cause time marks to be set on the time scale of the clock 24.
- the clock 24 with the time scale stands symbolically for a time measuring device which e.g. can be realized by appropriately controlled counters, but is restarted depending on the repetition time of the transmitted control bits, and thus does not itself have to meet any requirements for a precise time base.
- the determined transit time values as well as the frequencies of the received transmitters and their program identification codes are fed to a transit time comparator 22, which also receives information from a transit time value memory 20.
- the coordinate network with the associated transit time difference values as well as the transmission frequencies and the PI codes is stored in the transit time value memory 20.
- That value group is selected in the runtime value memory 20 that comes closest to all measured runtime values used for the comparison.
- interpolation and corresponding coordinates are calculated.
- the coordinates selected by comparison in the runtime value comparator 22 indicate the vehicle location.
- the direction of travel can also be inferred from the sequence of the determined values. This can e.g. can also be used to select a section of the motorway with the direction of travel at higher speeds.
- the routes As already mentioned, route names are compared in the comparator 12 with the route name contained in the traffic news and selected according to the route.
- a transmitter network operates with synchronous modulation
- synchronous modulation is expediently communicated to the receiver, for example by means of a specific bit in the RDS data stream.
- a failure in the synchronization of the transmitter modulation is then detected in the receiver, since it is now no longer possible to locate using the method described above.
- the invention is not restricted to the described example of traffic messages transmitted according to the RDS / TMC specifications. Rather, the invention can be applied in general if digitally coded traffic messages can be transmitted and received.
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Abstract
Description
Die Erfindung betrifft ein Verfahren zur fahrtroutenselektiven Wiedergabe digital codierter, von einem Sender zu einem Fahrzeugempfänger übertragener Verkehrsnachrichten nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for the route-selective playback of digitally coded traffic messages transmitted from a transmitter to a vehicle receiver according to the preamble of
Ein aus der DE-OS 35 36 820 bekannter Verkehrsfunk-Decoder ist zur Verarbeitung digital codierter Signale eingerichtet, die durch Demodulation eines Hilfsträgers gewonnen werden, der zusammen mit einem FM-Rundfunksender ausgestrahlt wird. Die decodierten Verkehrsnachrichten können ohne Unterbrechung des Rundfunk programms fortlaufend gesendet werden und durch die Übertragung standardisierter Texte besteht die Möglichkeit, eine Vielzahl von Verkehrsnachrichten aus unterschiedlichen Regionen zu übertragen.A traffic radio decoder known from DE-OS 35 36 820 is set up for processing digitally coded signals which are obtained by demodulating an auxiliary carrier which is broadcast together with an FM radio transmitter. The decoded traffic messages can be broadcast without interruption programs are continuously broadcast and by transmitting standardized texts it is possible to transmit a large number of traffic reports from different regions.
Für den Autofahrer sind in der Regel nur die Verkehrsnachrichten von Interesse, die seine Fahrtroute betreffen. Es ist deshalb bereits vorgeschlagen worden, die Verkehrsnachrichten nach der vorgesehenen Fahrtroute auszuwählen, wobei Streckenführungsnamen als oberste Hierarchiestufe zur örtlichen Eingrenzung der Verkehrsnachrichten dienen.The driver is usually only interested in the traffic news that relates to his route. It has therefore already been proposed to select the traffic messages according to the intended route, route names serving as the highest hierarchical level for local narrowing of the traffic messages.
Durch Vergleich der in den Verkehrsnachrichten enthaltenen Streckenführungsnamen mit entsprechenden Merkmalen der Fahrtroute gelingt es, dem Autofahrer nur die für ihn relevanten Verkehrsnachrichten auszuwählen. Die Angaben zur Fahrtroute,die bei der Auswahl der Verkehrsnachrichten erforderlich sind, könnten entweder manuell über ein Eingabegerät eingegeben werden oder auch automatisch durch eine Navigationseinrichtung, wie sie z.B. unter der Bezeichnung "Travel-Pilot" bekannt geworden ist, ermittelt werden.By comparing the route guidance names contained in the traffic news with corresponding characteristics of the route, the driver is able to select only the traffic news relevant to him. The information about the route, which is required when selecting the traffic news, could either be entered manually via an input device or automatically by a navigation device, such as that e.g. has become known under the name "Travel Pilot".
Während die manuelle Eingabe vom Autofahrer ent sprechende Aktivitäten erfordert, die eventuell aus Bequemlichkeit unterbleiben, benötigt der "Travel-Pilot" zusätzliche Einrichtungen im Fahrzeug, wie Radsensoren und Magnetfeldsensoren.During the manual input by the driver speaking activities, which may be omitted for convenience, the "travel pilot" needs additional devices in the vehicle, such as wheel sensors and magnetic field sensors.
Eine Standortbestimmung allein durch die unterschiedlichen Laufzeitwerte der am jeweiligen Fahrzeugstandort empfangbaren Sender ist aus dem Tagungsbericht "Elektronik im Kraftfahrzeug", Tagung Baden Baden, 08. - 09. September 1988, VDI-Berichte 687 bekannt. Das dort beschriebene Verfahren stellt eine Hyperbelortung des Fahrzeugstandortes über die ein RDS-Datentelegramm übertragenden Rundfunksender dar. Die Bezeichnung Hyperbelortung beruht darauf, daß die Punkte gleicher Laufzeitdifferenzen zweier Sender auf einer imaginären Hyperbel liegen. Durch Einbeziehung eines dritten Senders erhält man Schnittpunkte zwischen den einzelnen Hyperbeln, die den jeweiligen Empfangsstandort angeben.A location determination solely by means of the different runtime values of the transmitters that can be received at the respective vehicle location is known from the conference report "Electronics in motor vehicles", Baden Baden conference, September 8-9, 1988, VDI reports 687. The method described there represents hyper-location of the vehicle location via the radio transmitter transmitting an RDS data telegram. The term hyper-location is based on the fact that the points of the same transit time differences between two transmitters lie on an imaginary hyperbola. By including a third transmitter, intersections between the individual hyperbolas are obtained, which indicate the respective reception location.
Voraussetzung für eine derartige Ortung ist, daß die in die Ortung einbezogenenen Sender in ihrer Modulation synchronisiert sind. Dies kann z.B. dadurch erfolgen, daß die Sender einzeln mit hochgenauen Zeitreferenzen arbeiten oder aber durch eine gemeinsame Zeitreferenz synchroni siert werden, wobei die Laufzeitdifferenzen zwischen der gemeinsamen Referenz und den Sendern durch Zeitverzögerungsglieder ausgeglichen werden.A prerequisite for such a location is that the transmitters involved in the location are synchronized in their modulation. This can be done, for example, in that the transmitters work individually with highly precise time references or else synchronously by means of a common time reference be settled, the transit time differences between the common reference and the transmitters being compensated for by time delay elements.
Die Hyperbelortung erfordert empfangsseitig einen erheblichen Rechenaufwand, der den Geräteaufwand und damit auch die Herstellungskosten auf der Empfängerseite stark erhöht und somit für den Konsumsektor unattraktiv macht.Hyper-location requires a considerable amount of computing effort on the receiving side, which greatly increases the amount of equipment and thus also the manufacturing costs on the receiving side, making it unattractive for the consumer sector.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren nach dem Oberbegriff des Anspruchs 1 dahingehend zu verbessern, daß eine Ortung über die Laufzeitwerte der an einem Fahrzeugstandort empfangbaren Sender wesentlich vereinfacht wird.The invention is therefore based on the object of improving a method according to the preamble of
Diese Aufgabe wird bei einem Verfahren nach dem Oberbegriff des Anspruchs 1 durch die im kennzeichnenden Teil angegebenen Merkmale gelöst.This object is achieved in a method according to the preamble of
Bei dem erfindungsgemäßen Verfahren wird zunächst ein Koordinatennetz über das für den Autofahrer relevante Gebiet gelegt und für die einezelnen Koordinatenpunkte die Laufzeitwerte der empfangbaren und in ihrer Modulation synchronisierten Sender bestimmt. Dies kann durch einfache Umrechnung der Entfernungen der Koordinatenpunkte zu den einzelnen Senderstandorten in Laufzeitwerte erfolgen. Die so gewonnenen Laufzeitwerte werden nun tabellarisch im Empfänger gespeichert und mit den ermittelten Laufzeitwerten verglichen. Als Standort werden dann diejenigen Koordinaten ausgewählt, deren Laufzeitwerte den gemessenen Laufzeitwerten am nächsten kommen.In the method according to the invention, a coordinate network is first placed over the area relevant to the driver and the runtime values of the receivable transmitters and their modulation synchronized are determined for the individual coordinate points. This can be done by simple conversion the distances of the coordinate points to the individual transmitter locations are carried out in runtime values. The runtime values obtained in this way are now stored in a table in the receiver and compared with the determined runtime values. The coordinates whose runtime values come closest to the measured runtime values are then selected as the location.
Zur Verringerung des Speicherbedarfs können auch statt der absoluten Laufzeitwerte relative Laufzeitwerte gespeichert werden, die auf den Sender mit der geringsten Laufzeit bezogen sind. Vorzugsweise wird zur Laufzeitmessung wenigstens ein im digitalen Datenstrom enthaltendes, periodisch übertragenes Bit verwendet, wobei das vom Sender mit der geringsten Laufzeit übertragene Bit eine Uhr mit der Umlaufzeit gleich der Wiederholzeit des Bits startet. Die danach von den übrigen Sendern übertragenen Bits setzen Zeitmarken auf der Zeitskala der Uhr.In order to reduce the memory requirement, instead of the absolute runtime values, relative runtime values can be stored that relate to the transmitter with the lowest runtime. At least one periodically transmitted bit contained in the digital data stream is preferably used for the transit time measurement, the bit transmitted by the transmitter with the lowest transit time starting a clock with the round trip time equal to the repetition time of the bit. The bits then transmitted by the other transmitters set time stamps on the time scale of the clock.
Dadurch wird die Uhr nach jeder Wiederholzeit des zuerst eintreffenden Bits wieder neu gestartet, so daß an die absolute Zeitbasis keine hohen Anforderungen gestellt werden müssen.As a result, the clock is restarted after each repetition of the first arriving bit, so that no high demands have to be made on the absolute time base.
Für die Auswahl der in die Ortung einbezogenen RDS-Sender, die digital codierte Verkehrsnachrichten im RDS-Datentelegramm übertragen, eignen sich einmal deren Frequenzen und zusätzlich die Programm-Identifikations-Codes. Durch Auswertung sowohl der Frequenzen als auch der PI-Codes wird eine eindeutige Zuordnung der Sender erreicht, die auch schon eine grobe Gebietsbestimmung ermöglicht. Besonders vorteilhaft ist es, wenn die den jeweiligen Fahrzeugstandort bestimmenden Koordinaten unmittelbar den Ortsadressen im TMC-Code eines Vergleichers für vorgegebene Streckenführungsnamen zugeordnet sind, so daß eine Eingrenzung der Verkehrsnachrichten auf die Fahrtroute ohne Umrechnung oder Umwandlung der Standortkoordinaten auf Adressen im TMC-Code für Streckenführungsnamen möglich ist.For the selection of the RDS transmitters included in the location, which transmit digitally coded traffic messages in the RDS data telegram, their frequencies and the program identification codes are suitable. By evaluating both the frequencies and the PI codes, a clear assignment of the transmitters is achieved, which also enables a rough determination of the area. It is particularly advantageous if the coordinates determining the respective vehicle location are assigned directly to the location addresses in the TMC code of a comparator for predetermined route guidance names, so that the traffic messages are limited to the route without converting or converting the location coordinates to addresses in the TMC code for route guidance names is possible.
Die Erfindung betrifft ferner einen Fahrzeugempfänger nach dem Oberbegriff des Anspruchs 8.The invention further relates to a vehicle receiver according to the preamble of
Diesbezüglich liegt ihr die Aufgabe zugrunde, einen Fahrzeugempfänger dahingehend zu verbessern, daß die Laufzeitmeßeinrichtungen zur Bestimmung des jeweiligen Fahrzeugstandortes aufgrund der Laufzeitdifferenzen der empfangbaren Sender im Hinblick auf den nötigen Rechenaufwand und die Rechengeschwindig keit vereinfacht werden.In this regard, it is based on the task of improving a vehicle receiver in such a way that the transit time measuring devices for determining the respective vehicle location on the basis of the transit time differences of the receivable transmitters with regard to the necessary computing effort and the computing speed be simplified.
Diese Aufgabe wird bei einem Fahrzeugempfänger nach dem Oberbegriff des Anspruchs 8 durch die im kennzeichnenden Teil angegebenen Merkmale gelöst.This object is achieved in a vehicle receiver according to the preamble of
Weiterbildungen und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Ansprüchen, der weiteren Beschreibung und der Zeichnung, die ein Ausführungsbeispiel des Verfahrens und des Fahrzeugempfängers veranschaulicht.Further developments and advantageous refinements of the invention result from the claims, the further description and the drawing, which illustrates an exemplary embodiment of the method and of the vehicle receiver.
In der Zeichnung zeigen:
- Fig. 1 ein mit einem Koordinatennetz überzogener Landkartenausschnitt mit Senderstandorten,
- Fig. 2 eine graphische Darstellung der zeitlichen Verknüpfungen von Trägerschwingung, Bit, Block und Gruppe beim RDS-Datentelegramm,
- Fig. 3 ein Funktionsdiagramm zum Verfahrensablauf, und
- Fig. 4 ein Blockschaltbild eines erfindungsgemäßen Fahrzeugempfängers.
- 1 shows a map section with transmitter locations covered with a coordinate network,
- 2 shows a graphical representation of the temporal links between carrier oscillation, bit, block and group in the RDS data telegram,
- Fig. 3 is a functional diagram of the process flow, and
- Fig. 4 is a block diagram of a vehicle receiver according to the invention.
Fig. 1 zeigt einen Landkartenausschnitt des südlichen Teils des Bundeslandes Niedersachsen, in dem die dort vorhandenen Bundesautobahnen, größeren Städte und Senderstandorte Stadthagen, Hannover und Harz eingetragen sind. Die drei Sender strahlen das Programm von NDR2 aus, und zwar Stadthagen auf 102,6 MHz, Hannover auf 96,2 MHz und Harz auf 92,1 MHz. Allen drei Sendern ist für das Programm von NDR2 der Programm-Identifikations-Code D3C2 zugeordnet.Fig. 1 shows a map section of the southern part of the state of Lower Saxony, in which the existing federal highways, larger cities and transmitter locations Stadthagen, Hanover and Harz are entered. The three stations broadcast the program from NDR2, namely Stadthagen on 102.6 MHz, Hannover on 96.2 MHz and Harz on 92.1 MHz. The program identification code D3C2 is assigned to all three transmitters for the NDR2 program.
Der Kartenausschnitt, in dem alle drei Sender von einem Fahrzeug aus zu empfangen sind, ist mit einem Koordinatennetz überzogen, bei dem die in Nord-Süd-Richtung verlaufenden Koordinaten mit Y und die in Ost-West-Richtung verlaufenden Koordinaten mit X bezeichnet sind. Das Koordinatennetz besitzt hier eine Rasterweite von 10 x 10 km. Jedem Schnittpunkt des Koordinatennetzes sind die Laufzeiten zwischen den drei genannten Sendern zugeordnet.The map section in which all three transmitters can be received from one vehicle is covered with a coordinate network in which the coordinates running in the north-south direction are designated Y and the coordinates running in the east-west direction are designated X. The coordinate network has a grid of 10 x 10 km. The transit times between the three transmitters mentioned are assigned to each intersection of the coordinate network.
So ergibt sich z.B. für die Stadt Hildesheim, die auf dem Koordinatenschnittpunkt X₃ und Y₄ folgende Gruppe von Laufzeitwerten: Für 96,2 MHz 73,3 µsec, für 102,6 MHz 170,7 µsec und für 92,1 MHz 186,7 µsec. Wird diese Wertegruppe auf den Sender mit der geringsten Laufzeit zurückbezogen, so ergibt sich eine Kurztabelle, bei der der Frequenz 96,2 MHz der Laufzeitwert 0, der Frequenz 102,6 MHz der Laufzeitwert 93,4 usec und der Frequenz 92,1 MHz der Laufzeitwert 109,4 usec zugewiesen wird.For example, for the city of Hildesheim, the on the coordinate intersection X₃ and Y₄ the following group of runtime values: for 96.2 MHz 73.3 µsec, for 102.6 MHz 170.7 µsec and for 92.1 MHz 186.7 µsec. If this group of values is referred back to the transmitter with the lowest runtime, a short table results, in which the frequency 96.2 MHz the
Diese Kurztabelle reicht für die Standortbestimmung aus und besitzt den Vorteil, daß sie ein Drittel weniger Speicherkapazität im Laufzeitwertespeicher des Empfängers beansprucht.This short table is sufficient for the location determination and has the advantage that it requires a third less memory capacity in the runtime value memory of the receiver.
Bei der Standortbestimmung des Empfängers werden die ermittelten Laufzeitwerte mit den gespeicherten Laufzeitwerten verglichen. Dabei wird die Wertegruppe ausgewählt, die bei allen drei Werten die größte Übereinstimmung besitzt. Der dieser Wertegruppe zugeordnete Koordinatenpunkt entspricht dann dem Standort des Empfängers bzw. des Fahrzeuges. Um Zwischenwerte zwischen dem relativ groben Raster von 10 x 10 km zu erhalten, könnte auch die betreffende Masche des Koordinatennetzes ausgewählt werden und die genaue Position durch Interpolation der vier Koordinaten ermittelt werden. Für eine flächendeckende Anwendung des Verfahrens wäre es erforderlich, das Koordinatennetz weiter auszudehnen als hier auf dem Kartenabschnitt dargestellt und alle empfangbaren synchronisierten Sender hinsichtlich ihrer Laufzeitwerte in entsprechende Tabellen aufzunehmen und abzuspeichern.When determining the location of the recipient, the determined runtime values are compared with the stored runtime values. The value group is selected that has the greatest agreement for all three values. The coordinate point assigned to this value group then corresponds to the location of the recipient or the vehicle. In order to obtain intermediate values between the relatively coarse grid of 10 x 10 km, the relevant mesh of the coordinate network and the exact one could also be selected Position can be determined by interpolation of the four coordinates. For a comprehensive application of the method, it would be necessary to extend the coordinate network further than shown here on the map section and to record and save all receivable synchronized transmitters with respect to their runtime values in corresponding tables.
Fig. 2 zeigt ein Diagramm zur Veranschaulichung der Verknüpfung von Trägerschwingung, Bit, Block und Gruppe beim RDS-Datentelegramm. Beim 57 kHz-Träger, auf den das RDS-Datentelegramm aufmoduliert ist, entsprechen 48 Schwingungsperioden einem Bit. Dabei bilden 26 Bit einen Block und 4 Blöcke ergeben eine RDS-Gruppe. Aus dem Zusammenhang ergibt sich, daß die RDS-Gruppen von 87,578 msec wiederholt werden.2 shows a diagram to illustrate the combination of carrier oscillation, bit, block and group in the RDS data telegram. For the 57 kHz carrier on which the RDS data telegram is modulated, 48 oscillation periods correspond to one bit. 26 bits form a block and 4 blocks form an RDS group. From the context it follows that the RDS groups of 87.578 msec are repeated.
Wird innerhalb jeder RDS-Gruppe 1 Bit zur Durchführung der Laufzeitmessungen ausgewertet, zweckmäßigerweise aus dem PI-Code, da dieser unverändert etwa 11-mal pro Sekunde wiederkehrt, so lassen sich etwa 11 Messungen pro Sekunde durchführen. Diese Zeit bietet eine ausreichende Genauigkeit, um auch die Fahrtrichtung durch aufeinanderfolgende Messungen erfassen zu können und so eine noch engere Auswahl der rele vanten Verkehrsnachrichten zu treffen.If 1 bit is evaluated within each RDS group in order to carry out the runtime measurements, expediently from the PI code, since this continues unchanged approximately 11 times per second, approximately 11 measurements per second can be carried out. This time offers sufficient accuracy to be able to record the direction of travel through successive measurements and thus an even narrower selection of the rele to meet vanten traffic news.
Außerdem ergibt sich zwischen der Wiederholzeit von 87,578 msec und den innerhalb eines üblichen Sendegebietes auftretenden Laufzeitwerten ein günstiges Verhältnis, so daß die Laufzeitwerte mit hoher Genauigkeit ermittelt werden können, ohne daß hierfür eine besonders präzise Zeitbasis auf der Empfängerseite erforderlich wäre.In addition, there is a favorable ratio between the repetition time of 87.578 msec and the runtime values occurring within a normal transmission area, so that the runtime values can be determined with high accuracy without requiring a particularly precise time base on the receiver side.
Fig. 3 veranschaulicht den Verfahrensablauf des erfindungsgemäßen Verfahrens. Von einem Fahrzeugempfänger werden wenigstens drei Sender empfangen und hier die RDS-Datentelegramme einem Decoder zugeführt. Anhand eines definierten Bits in jeder Gruppe wird bei dem Sender A mit der geringsten Laufzeit eine Uhr mit der Umlaufzeit von 87,578 msec gestartet und auf der Zeitskala werden durch die Bits der weiteren Sender B und C Zeitmarken gesetzt. Aus den Zeitmarken ergeben sich die Laufzeitdifferenzen zwischen dem Empfängerstandort und den Standorten der einzelnen Sender.3 illustrates the process flow of the method according to the invention. At least three transmitters are received by a vehicle receiver and here the RDS data telegrams are fed to a decoder. On the basis of a defined bit in each group, a clock with the round trip time of 87.578 msec is started at transmitter A with the lowest transit time and time marks are set on the time scale by the bits of the other transmitters B and C. The time differences between the receiver location and the locations of the individual transmitters result from the time stamps.
Aus den ermittelten Laufzeitwerten werden anhand einer Kurztabelle die am nähesten kommenden Werte ermittelt, denen ein bestimmter Ort mit den Koordinaten X und Y zugeordnet ist. Die ermittelten Koordinaten werden nun dazu benutzt, einen Vergleicher für Ortsadressen anzusprechen, der aus den im sogenannten Trafic-Message-Channel (TMC) vorhandenen und noch unselektierten Verkehrsnachrichten diejenigen auszuwählen gestattet, die für die vorgesehene Fahrtroute des Autofahrers relevant sind.From the determined transit time values, the closest values are determined on the basis of a short table, to which a specific location with the coordinates X and Y assigned. The coordinates determined are now used to address a comparator for location addresses, which allows to select from the so-called traffic message channel (TMC) and still unselected traffic messages those that are relevant for the intended route of the driver.
Fig. 4 zeigt das Blockschaltbild eines Fahrzeugempfängers, wobei sich die Darstellung auf die Wiedergabe der Baueinheit beschränkt, die zur Darstellung von Verkehrsnachrichten erforderlich sind.FIG. 4 shows the block diagram of a vehicle receiver, the illustration being limited to the reproduction of the structural unit that is required to display traffic news.
Eine Empfangseinrichtung 14 ist auf die in einem Empfangsgebiet empfangbaren Sender abstimmbar. Die Empfangseinrichtung 14 beinhaltet entweder mehrere auf verschiedene Sender gleichzeitig abgestimmte Empfangsteile oder ein im Multiplexbetrieb umschaltbares Empfangsteil.A receiving device 14 can be tuned to the transmitters receivable in a reception area. The receiving device 14 either contains a plurality of receiving parts tuned simultaneously to different transmitters or a receiving part which can be switched over in multiplex mode.
Der Empfangseinrichtung 14 ist ein Decoder 10 nachgeschaltet, der den digital codierten Datenstrom decodiert. Dabei wird beim RDS-Datenstrom insbesondere der sogenannte Trafic-Message-Channel (TMC) ausgewertet, welcher die Verkehrsnachrichten enthält. Darüberhinaus wertet der Decoder aber auch die Empfangsfrequenz sowie den Programm-Identifikations-Code aus. Analog zur Empfangseinrichtung 14 kann der Decoder 10 ebenfalls aus mehreren parallelen Decoderteilen bestehen oder aber als im Multiplexbetrieb umschaltbarer Decoder ausgebildet sein.The receiving device 14 is followed by a
Dem Decoder 10 ist ein Vergleicher 12 nachgeschaltet, dem einerseits vom Decoder 10 die vollständigen übertragenen Verkehrsnachrichten zugeführt und andererseits Merkmale der Fahrtroute eingegeben werden. Aus diesen beiden Informationen werden durch Vergleich diejenigen Verkehrsnachrichten selektiert, die für die vorgesehene Fahrtroute relevant sind und diese Verkehrsnachrichten werden über die Ausgabeeinrichtung 18 dem Autofahrer optisch oder akustisch vermittelt.The
Die Angabe der Fahrtroute wird über eine Standortbestimmung durch Laufzeitmessungen der empfangsbaren Sender ermittelt. Dazu wird ein periodisch übertragenes Bit im digitalen Datenstrom vom Decoder 10 einer Laufzeitmeßeinrichtung 16 zugeführt. Das Bit trifft dabei mehrfach ein, und zwar sowohl von dem Sender mit der geringsten Laufzeit als auch von den weiteren Sendern mit größeren Laufzeiten. Durch die Zeitdifferenzen zwischen dem Eintreffen des perio disch wiederkehrenden Bits werden Laufzeitwerte oder Laufzeitdifferenzwerte ermittelt, die einem Laufzeitvergleicher 22 zugeführt werden.The indication of the route is determined by determining the location by measuring the transit time of the receivable transmitter. For this purpose, a periodically transmitted bit in the digital data stream is fed from the
Im einzelnen umfaßt die Laufzeitmeßeinrichtung 16 eine Steuerschaltung 26, die eine Uhr 24 steuert. Durch das vom Sender mit der geringsten Laufzeit übertragene Bit wird die Uhr 24 über die Steuerschaltung 26 gestartet. Die von den übrigen Sendern übertragenen Bits bewirken, daß Zeitmarken auf der Zeitskala der Uhr 24 gesetzt werden.In particular, the transit
Die Uhr 24 mit der Zeitskala steht hier symbolisch für eine Zeitmeßeinrichtung, die z.B. durch entsprechend gesteuerte Zähler realisiert sein kann, aber in Abhängigkeit der Wiederholzeit der übertragenen Steuerbits neu gestartet wird, und somit selbst keine Anforderungen an eine präzise Zeitbasis erfüllen muß.The
Die ermittelten Laufzeitwerte sowie die Frequenzen der empfangenen Sender und deren Programm-Identifikations-Codes werden einem Laufzeitvergleicher 22 zugeführt, der ebenfalls Angaben aus einem Laufzeitwertespeicher 20 erhält.The determined transit time values as well as the frequencies of the received transmitters and their program identification codes are fed to a
In dem Laufzeitwertespeicher 20 ist das Koordinatennetz mit den zugehörigen Laufzeitdifferenzwerten sowie den Sendefrequenzen und den PI-Codes gespeichert.The coordinate network with the associated transit time difference values as well as the transmission frequencies and the PI codes is stored in the transit
Durch Vergleich der Laufzeitwertegruppen wird diejenige Wertegruppe im Laufzeitwertespeicher 20 ausgewählt, die allen zum Vergleich herangezogenen gemessenen Laufzeitwerten am nächsten kommt. Alternativ besteht auch die Möglichkeit, daß bei Abweichungen zwischen zwei oder mehreren benachbarten Wertegruppen interpoliert wird und daraus entsprechende Koordinaten errechnet werden.By comparing the runtime value groups, that value group is selected in the
Die durch Vergleich im Laufzeitwertevergleicher 22 selektierten Koordinaten geben den Fahrzeugstandort an. Aus der Folge der ermittelten Werte kann außerdem auf die Fahrtrichtung geschlossen werden. Dies kann z.B. bei höherer Fahrtgeschwindigkeit auch zur Auswahl eines Autobahnabschnitts mit Fahrtrichtung benutzt werden.The coordinates selected by comparison in the
Die Koordinaten adressieren in einem nachgeschalteten Vergleicher 12 für Streckenführungsnamen Ortsadressen, aufgrund derer die für die Fahrtroute relevanten Streckenführungsnamen ausgewählt werden. Die Strecken führungsnamen werden dabei, wie bereits erwähnt, im Vergleicher 12 mit den in den Verkehrsnachrichten enthaltenen Streckenführungsnamen verglichen und fahrtroutenspezifisch selektiert.The coordinates address location addresses in a downstream comparator 12 for route guidance names, on the basis of which the route guidance names relevant for the route are selected. The routes As already mentioned, route names are compared in the comparator 12 with the route name contained in the traffic news and selected according to the route.
Zweckmäßigerweise wird die Tatsache, daß ein Sendernetz mit synchroner Modulation arbeitet, beispielsweise durch ein spezifisches Bit im RDS-Datenstrom dem Empfänger mitgeteilt. Im Empfänger wird dann ein Ausfall der Synchronisation der Sendermodulation erkannt, da nun eine Ortung mit der vorbeschriebenen Methode nicht mehr möglich ist.The fact that a transmitter network operates with synchronous modulation is expediently communicated to the receiver, for example by means of a specific bit in the RDS data stream. A failure in the synchronization of the transmitter modulation is then detected in the receiver, since it is now no longer possible to locate using the method described above.
Die Erfindung ist nicht auf das beschriebene Beispiel von nach den RDS/TMC-Spezifikationen übertragenen Verkehrsnachrichten beschränkt. Vielmehr läßt sich die Erfindung allgemein anwenden, wenn digital codierte Verkehrsnachrichten übertragen und empfangen werden können.The invention is not restricted to the described example of traffic messages transmitted according to the RDS / TMC specifications. Rather, the invention can be applied in general if digitally coded traffic messages can be transmitted and received.
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3926180 | 1989-08-08 | ||
DE3926180A DE3926180A1 (en) | 1989-08-08 | 1989-08-08 | METHOD FOR DRIVING ROUTE-SELECTIVE PLAYBACK DIGITALLY CODED TRAFFIC MESSAGES TRANSMITTED FROM A TRANSMITTER TO A VEHICLE RECEIVER AND VEHICLE RECEIVER |
Publications (3)
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EP0412286A2 true EP0412286A2 (en) | 1991-02-13 |
EP0412286A3 EP0412286A3 (en) | 1992-08-05 |
EP0412286B1 EP0412286B1 (en) | 1996-03-27 |
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EP90112540A Expired - Lifetime EP0412286B1 (en) | 1989-08-08 | 1990-06-30 | Route-selective reproduction method for digitally coded messages transmitted from a transmitter to a vehicle receiver, and corresponding vehicle receiver |
Country Status (2)
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EP (1) | EP0412286B1 (en) |
DE (2) | DE3926180A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998041959A1 (en) * | 1997-03-15 | 1998-09-24 | Robert Bosch Gmbh | Method and receiver for geographical selection of digitally coded messages |
WO1999012138A1 (en) * | 1997-09-03 | 1999-03-11 | Mannesmann Vdo Ag | Navigation system for a vehicle |
GB2346244A (en) * | 1999-01-22 | 2000-08-02 | Rover Group | Traffic information system for a vehicle |
WO2001097195A1 (en) * | 2000-06-14 | 2001-12-20 | Vodafone Holding Gmbh | Method for detecting traffic data |
WO2002037444A1 (en) * | 2000-10-30 | 2002-05-10 | Vodafone Holding Gmbh | Method for acquiring traffic data in a road network and terminal |
DE102014201602A1 (en) | 2014-01-29 | 2015-07-30 | Continental Automotive Gmbh | System and method for detecting geographic regions for mobile receivers and methods |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4223194C1 (en) * | 1992-07-15 | 1993-08-26 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De | |
DE4322288A1 (en) * | 1993-07-05 | 1995-01-12 | Amazonen Werke Dreyer H | Method for evaluating traffic messages |
DE19538876A1 (en) * | 1995-09-01 | 1997-03-06 | Westdeutscher Rundfunk | System for determining the position of moving objects |
DE19626114A1 (en) * | 1996-06-28 | 1998-01-02 | Sel Alcatel Ag | Process, vehicle-side and stationary device for individual warning of traffic disruptions |
DE19638515B4 (en) * | 1996-09-20 | 2004-01-15 | Grundig Car Intermedia System Gmbh | Method and device for assigning messages, in particular traffic news |
DE10225185A1 (en) * | 2002-06-06 | 2003-12-18 | Werner M Bless | Route information provision method for use with a motor vehicle onboard device, includes a locating device and a processor for determining which received information is relevant to the location and route being followed |
DE10233378B4 (en) * | 2002-07-23 | 2007-10-04 | Fendt, Günter | Traffic Alert System with GPS (Global Position System) support |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2414733A1 (en) * | 1978-01-12 | 1979-08-10 | Weisser W | METHOD OF NAVIGATION AND DETERMINATION OF THE POSITION OF A VEHICLE |
EP0300205A2 (en) * | 1987-07-24 | 1989-01-25 | Robert Bosch Gmbh | Route-selective reproduction method for traffic messages, and vehicle receiver |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3536820A1 (en) * | 1985-10-16 | 1987-04-16 | Bosch Gmbh Robert | Traffic program decoder |
-
1989
- 1989-08-08 DE DE3926180A patent/DE3926180A1/en not_active Ceased
-
1990
- 1990-06-30 DE DE59010233T patent/DE59010233D1/en not_active Expired - Fee Related
- 1990-06-30 EP EP90112540A patent/EP0412286B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2414733A1 (en) * | 1978-01-12 | 1979-08-10 | Weisser W | METHOD OF NAVIGATION AND DETERMINATION OF THE POSITION OF A VEHICLE |
EP0300205A2 (en) * | 1987-07-24 | 1989-01-25 | Robert Bosch Gmbh | Route-selective reproduction method for traffic messages, and vehicle receiver |
Non-Patent Citations (1)
Title |
---|
INTERNATIONAL CONGRESS ON TRANSPORTATION ELECTRONICS - PROCEEDINGS - OCTOBER 17 -18,1988 IEEE US Seiten 229 - 235; P.BUMANN: 'VEHICLE COMMUNICATIONS IN EUROPE' * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998041959A1 (en) * | 1997-03-15 | 1998-09-24 | Robert Bosch Gmbh | Method and receiver for geographical selection of digitally coded messages |
WO1999012138A1 (en) * | 1997-09-03 | 1999-03-11 | Mannesmann Vdo Ag | Navigation system for a vehicle |
GB2346244A (en) * | 1999-01-22 | 2000-08-02 | Rover Group | Traffic information system for a vehicle |
WO2001097195A1 (en) * | 2000-06-14 | 2001-12-20 | Vodafone Holding Gmbh | Method for detecting traffic data |
JP2004503886A (en) * | 2000-06-14 | 2004-02-05 | ヴォーダフォン・ホールディング・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Methods for collecting traffic situation data |
WO2002037444A1 (en) * | 2000-10-30 | 2002-05-10 | Vodafone Holding Gmbh | Method for acquiring traffic data in a road network and terminal |
DE102014201602A1 (en) | 2014-01-29 | 2015-07-30 | Continental Automotive Gmbh | System and method for detecting geographic regions for mobile receivers and methods |
EP2903188A1 (en) | 2014-01-29 | 2015-08-05 | Continental Automotive GmbH | System and method for detecting geographical regions for mobile receiver and method |
Also Published As
Publication number | Publication date |
---|---|
EP0412286A3 (en) | 1992-08-05 |
DE3926180A1 (en) | 1991-02-14 |
EP0412286B1 (en) | 1996-03-27 |
DE59010233D1 (en) | 1996-05-02 |
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