EP0736981B1 - System for acquiring and transmitting information to central points - Google Patents
System for acquiring and transmitting information to central points Download PDFInfo
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- EP0736981B1 EP0736981B1 EP96105001A EP96105001A EP0736981B1 EP 0736981 B1 EP0736981 B1 EP 0736981B1 EP 96105001 A EP96105001 A EP 96105001A EP 96105001 A EP96105001 A EP 96105001A EP 0736981 B1 EP0736981 B1 EP 0736981B1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
- G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
Definitions
- the invention relates to a system for detecting along predetermined traffic routes determined information and Transfer the information to central locations.
- the information of road users about traffic conditions for example traffic density and path condition, local weather conditions, Emergencies and the like is usually inadequate and not current. Such information is so far from different Institutions without systematics and with sometimes low level of up-to-dateness by traffic police, towing services, personnel taken by car driver associations and traffic radio stations and passed on.
- the invention has for its object to provide a solution with the latest, on request at any time retrievable information offered to road users and existing information systems can be used as far as possible.
- Fig. 1 shows a message collection and transport system of the kind multipoint to point.
- a driveway on the one with a mobile phone MT and a radio receiver R equipped vehicle located, in particular neuralgic routes, at certain intervals information collectors IE arranged, which are completely self-sufficient for themselves. They are distributed in a certain grid and increase certain times information on. This can be active or passively by means of electromagnetic, optical, acoustic, electrical, magnetic or other physical effects respectively.
- the system has to transmit this information two levels, namely a single information level and a Collecting information level.
- the individual information level is considered more closely.
- stations S am Mode of transport edge, e.g. Road, river, railway line.
- the information provider (s) are / are each of these senders IE whose contents should be forwarded.
- the Transmitters S send the information of the connected to them
- Information collector IE in a predetermined time frame a central receiver E, all transmitters S in these each associated predetermined periods of time receives. It follows that the transmitter partly with high transmission power because their position is far away and without Visual connection to the central receiver E can be.
- the transmitter S additionally each a receiver E included in a predetermined period of time receives the broadcast of the adjacent station and in a second period sends the message again, the is then received by its neighbor, who has this message in sends out a third period again.
- the passing on from transceiver S / E to transceiver S / E will continue until the message in an nth period of time at the central Receiver E has arrived (bucket chain principle).
- the transceivers S / E have each to their nearest neighbor in the Bucket chain line of sight.
- When passing through transceivers to transceivers may be to the transceiver S / E each connected sensors (information recorder) IE their Insert data in the message frame.
- each bucket chain can be very different.
- the determination of a maximum length of the group telegram as Standard always leads to the same and sometimes very long transmission time. It is therefore very beneficial if per transceiver S / E the data record of the connected sensors individually transferred in a separate bucket chain cycle becomes.
- the message telegram on each retransmission is extended to the next station by the message part, the belongs to this sending station.
- This requires short Bucket chains short transmission times, long accordingly longer transmission times.
- the recipient is for a short time (fraction of a Telegram length) forcibly switched on; is there a signal the receiver is held ready to receive and switches off as soon as the reception input signal disappears.
- one or more bucket chains are connected to a central receiver E.
- the only prerequisite here is that the information system is capable of transmitting data.
- the headquarters of this The higher-level system evaluates the data and distributes it the road users, e.g. via a third radio-like Information system (RS) or via the aforementioned mobile radio system, Operational radio system etc.
- RS radio-like Information system
- the transceivers S / E are advantageous with the information gatherers (Sensors, imagers ...) integrated and from powered by a solar generator. All features not to certain times, a timer switches, which is assigned to each transceiver. The Clocks of all transceivers are synchronized, for example by a common high-precision radio signal. The clock controls likewise all temporal sequences of the transceivers S / E and of the central recipient E.
- the transferred Information can be status messages from sensors, image data of cameras, notifications of emergency call buttons, etc.
- the vehicles can also be time-synchronous Use transmitter.
- the hazard warning lights, the Airbags, the belt sensors or an emergency button is a Telegram to the permanently installed transceiver units S / E cleverly. These listen in a same time slot everywhere periodically on such emergency telegrams.
- the content can be: Vehicle registration number, emergency button pressed and / or airbag, Belt sensor, hazard warning lights or similar triggered.
- the central receiver E gets this information after passing the bucket chain, adds the location information and the time to and transfers to the Parent system that sends the information to the service center SC forwards. If a vehicle additionally has a time-synchronous Recipient owns, can the emergency message of another Vehicle can also be intercepted along the route traveled, on the emergency message just in the bucket-chain procedure is transported.
- the central receiver (box A in Fig. 2) may also be additional be equipped with a transmitter (dashed rimmed Box B in Fig. 2). Then any messages, which are interesting for the respective route, by bucket chain be transferred to the vehicles. This is done in one other time cycle and with reverse timing, so that the message moves away from the central transceiver.
- each transceiver station S / E sends a test telegram instead of a measured value message is to the function of the bucket chain or the transceiver to check and locate possible defects.
- Sensors in the vehicle can send messages about speed, Engine speed, "ignition on”, etc. to a driving condition situation to the fixed transceiver units sent and passed on to the central station Be where they are together with the information of other vehicles be evaluated.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Mobile Radio Communication Systems (AREA)
- Traffic Control Systems (AREA)
Description
Die Erfindung bezieht sich auf ein System zum Erfassen von längs vorgegebener Verkehrswege ermittelter Informationen und Übertragen der Informationen an zentrale Stellen.The invention relates to a system for detecting along predetermined traffic routes determined information and Transfer the information to central locations.
Ein derartiges System ist aus der GB-A-1 435 415 (J. Kavalier et al) bekannt. Dieses Dokument schildert ein System zum Erfassen von längs vorgegebener Verkehrswege ermittelter Informationen und zum Übertragen der Informationen an zentrale Stellen, bei dem an den betreffenden Stellen Informationserfasser angeordnet sind, die an im entsprechenden räumlichen Raster angeordnete Sender angeschlossen sind, die die Informationen in einem vorbestimmten Zeitraster an einen zentralen Empfänger senden.Such a system is known from GB-A-1 435 415 (J. Kavalier et al.). This document describes a system for Detection of longitudinal predetermined traffic routes determined Information and to transfer the information to central Where the person concerned collects information at the posts concerned arranged in the corresponding spatial Raster arranged transmitters are connected, which are the Information in a predetermined time frame to a send central recipient.
Die Informationen der Verkehrsteilnehmer über Verkehrszustände, beispielsweise Verkehrsdichte und Wegezustand, lokale Wetterbedingungen, Notfälle und dergl. ist meist unzureichend und nicht aktuell. Solche Informationen werden bisher von verschiedenen Institutionen ohne Systematik und mit zum Teil geringem Aktualitätsgrad durch Verkehrspolizei, Abschleppdienste, Personal von Autofahrervereinigungen und Verkehrsfunksendern aufgenommen und weitergegeben.The information of road users about traffic conditions, for example traffic density and path condition, local weather conditions, Emergencies and the like is usually inadequate and not current. Such information is so far from different Institutions without systematics and with sometimes low level of up-to-dateness by traffic police, towing services, personnel taken by car driver associations and traffic radio stations and passed on.
Der Erfindung liegt die Aufgabe zugrunde, eine Lösung anzugeben, mit der aktuelle, auf Wunsch jederzeit abrufbare Informationen für Verkehrsteilnehmer angeboten und vorhandene Informationssysteme dabei weitestgehend genutzt werden können. The invention has for its object to provide a solution with the latest, on request at any time retrievable information offered to road users and existing information systems can be used as far as possible.
Diese Aufgabe wird durch ein System gemäß Anspruch 1 gelöst.This object is achieved by a system according to
Mit dem erfindungsgemäßen System, das mittels Meßwerterfassern für Wegezustand, Verkehrsstatus, Wetterbedingungen, Notfälle etc. aktuelle Informationen zur Verkehrslage sammelt und an Zentralen weiterleitet, die ihrerseits diese Informationen aufbereiten und wieder verbreiten, ist eine optimale Verkehrsinformationen und -leitung möglich.With the system according to the invention, by means of Meßwerterfassern for road condition, traffic status, weather conditions, emergencies etc. current information on traffic conditions and collects Central offices, which in turn process this information and spread again, is optimal traffic information and management possible.
Vorteilhafte Ausgestaltungen und Weiterbildungen des Erfindungsgegenstandes sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments of the subject invention are given in the subclaims.
Nachstehend wird die Erfindung anhand von zwei in der Zeichnung dargestellten Ausführungsbeispielen, die jeweils ein Meldungssammel- und -transportsystem zeigen, näher erläutert.In the following the invention will be described with reference to two in the drawing illustrated embodiments, each a message collection and transport system show, explained in more detail.
Fig. 1 zeigt ein Meldungssammel- und -transportsystem von der Art multipoint to point. Dabei sind längs eines Fahrweges, auf dem sich ein mit einem Mobiltelefon MT und einem Rundfunkempfänger R ausgestattetes Fahrzeug befindet, insbesondere an neuralgischen Strecken, in bestimmten Abständen Informationserfasser IE angeordnet, die für sich vollkommen autark sind. Sie werden in einem bestimmten Raster verteilt und nehmen zu bestimmten Zeiten Informationen auf. Dies kann aktiv oder passiv mittels elektromagnetischer, optischer, akustischer, elektrischer, magnetischer oder anderer physikalischer Effekte erfolgen. Zur Übertragung dieser Informationen hat das System zwei Ebenen, nämlich eine Einzelinformationsebene und eine Sammelinformationsebene.Fig. 1 shows a message collection and transport system of the Kind multipoint to point. Here are along a driveway, on the one with a mobile phone MT and a radio receiver R equipped vehicle located, in particular neuralgic routes, at certain intervals information collectors IE arranged, which are completely self-sufficient for themselves. They are distributed in a certain grid and increase certain times information on. This can be active or passively by means of electromagnetic, optical, acoustic, electrical, magnetic or other physical effects respectively. The system has to transmit this information two levels, namely a single information level and a Collecting information level.
Zunächst wird die Einzelinformationsebene näher betrachtet. Hierbei werden in Abständen von ca. 100 m bis 1 km Sender S am Verkehrsträgerrand, z.B. Straße, Fluß, Bahnstrecke aufgestellt. An diese Sender ist/sind jeweils der/die Informationserfasser IE angeschlossen, deren Inhalt weitergeleitet werden soll. Die Sender S senden die Informationen der an sie angeschlossenen Informationserfasser IE in einem vorbestimmten Zeitraster an einen zentralen Empfänger E, der alle Sender S in diesen jeweils zugeordneten vorbestimmten Zeitabschnitten empfängt. Dabei ergibt sich, daß die Sender zum Teil mit hoher Sendeleistung senden müssen, da ihre Position weit entfernt und ohne Sichtverbindung zum zentralen Empfänger E sein kann.First, the individual information level is considered more closely. At intervals of approx. 100 m to 1 km, stations S am Mode of transport edge, e.g. Road, river, railway line. The information provider (s) are / are each of these senders IE whose contents should be forwarded. The Transmitters S send the information of the connected to them Information collector IE in a predetermined time frame a central receiver E, all transmitters S in these each associated predetermined periods of time receives. It follows that the transmitter partly with high transmission power because their position is far away and without Visual connection to the central receiver E can be.
Es ist daher vorteilhaft, daß die Sender S zusätzlich jeweils einen Empfänger E enthalten, der in einem vorbestimmten Zeitabschnitt die Sendung des benachbarten Senders empfängt und in einem zweiten Zeitabschnitt die Nachricht wieder aussendet, die dann von dessen Nachbarn empfangen wird, der diese Nachricht in einem dritten Zeitabschnitt wieder aussendet. Das Weiterreichen von Sendeempfänger S/E zu Sendeempfänger S/E wird fortgesetzt, bis die Nachricht in einem n-ten Zeitabschnitt beim zentralen Empfänger E angelangt ist (Eimerkettenprinzip). Die Sendeempfänger S/E haben jeweils zu ihren nächsten Nachbarn in der Eimerkette Sichtverbindung. Beim Durchreichen von Sendeempfänger zu Sendeempfänger können die an die Sendeempfänger S/E jeweils angeschlossenen Sensoren (Informationserfasser) IE ihre Daten in das Meldungstelegramm einfügen. Ein solches System von der Art point to point to end ist in Fig. 2 dargestellt.It is therefore advantageous that the transmitter S additionally each a receiver E included in a predetermined period of time receives the broadcast of the adjacent station and in a second period sends the message again, the is then received by its neighbor, who has this message in sends out a third period again. The passing on from transceiver S / E to transceiver S / E will continue until the message in an nth period of time at the central Receiver E has arrived (bucket chain principle). The transceivers S / E have each to their nearest neighbor in the Bucket chain line of sight. When passing through transceivers to transceivers may be to the transceiver S / E each connected sensors (information recorder) IE their Insert data in the message frame. Such a system of the type point to point to end is shown in FIG.
Die Länge der jeweiligen Eimerkette kann sehr verschieden sein. Die Bestimmung einer Maximallänge des Sammeltelegramms als Standard führt zu einer immer gleichen und unter Umständen sehr langen Übertragungsdauer. Es ist daher sehr vorteilhaft, wenn je Sendeempfänger S/E der Datensatz der angeschlossenen Sensoren individuell in einem eigenen Eimerkettenzyklus übertragen wird.The length of each bucket chain can be very different. The determination of a maximum length of the group telegram as Standard always leads to the same and sometimes very long transmission time. It is therefore very beneficial if per transceiver S / E the data record of the connected sensors individually transferred in a separate bucket chain cycle becomes.
In einer weiteren vorteilhaften Ausgestaltung des Systems ist vorgesehen, daß das Meldungstelegramm bei jedem Weitersenden zur nächsten Station um den Meldungsteil verlängert wird, der zu dieser absendenden Station gehört. Damit benötigen kurze Eimerketten kurze Übertragungszeiten, lange dagegen entsprechend längeren Übertragungszeiten. Zu Beginn des Empfangszeitschlitzes wird der Empfänger für kurze Zeit (Bruchteil einer Telegrammlänge) zwangseingeschaltet; ist ein Signal vorhanden, wird der Empfänger empfangsbereit gehalten und schaltet sich ab, sobald das Empfangseingangssignal verschwindet.In a further advantageous embodiment of the system provided that the message telegram on each retransmission is extended to the next station by the message part, the belongs to this sending station. This requires short Bucket chains short transmission times, long accordingly longer transmission times. At the beginning of the reception time slot the recipient is for a short time (fraction of a Telegram length) forcibly switched on; is there a signal the receiver is held ready to receive and switches off as soon as the reception input signal disappears.
Bei der Sammelinformationsebene sind eine oder mehrere Eimerketten an einen zentralen Empfänger E angeschlossen. Dieser sammelt die Informationen und gibt sie an ein zweites Informationssystem M mit einer Basisstation BS ab, das ein öffentliches (PLMN) oder privates Mobilfunksystem, ein Betriebsfunksystem (BFS), ein Verkehrsfunksystem etc. sein kann (vgl. Fig. 2). Voraussetzung ist hierbei lediglich, daß das Informationssystem datenübertragungsfähig ist. Die Zentrale dieses übergeordneten Systems wertet die Daten aus und verteilt sie an die Verkehrsteilnehmer, z.B. über ein drittes rundfunkartiges Informationssystem (RS) oder über das vorgenannte Mobilfunksystem, Betriebsfunksystem etc.At the collection information level, one or more bucket chains are connected to a central receiver E. This Collect the information and give it to a second information system M with a base station BS, which is a public (PLMN) or private mobile radio system, an operating radio system (FSO), a traffic information system, etc. (cf. Fig. 2). The only prerequisite here is that the information system is capable of transmitting data. The headquarters of this The higher-level system evaluates the data and distributes it the road users, e.g. via a third radio-like Information system (RS) or via the aforementioned mobile radio system, Operational radio system etc.
Durch günstige Wahl der Sende-Empfangszeitabschnitte wird erreicht, daß lediglich eine einzige Frequenz für alle Sendeempfänger S/E aller Eimerketten erforderlich ist, da die Sendeleistungen wegen der vorhandenen Sichtverbindung so gering sein können, daß bei gleicher Frequenz derselbe Zeitabschnitt nach wenigen Kilometer Entfernung wieder verwendet werden kann.By favorable choice of the transmission-reception periods is achieves that only a single frequency for all transceivers S / E of all bucket chains is required because the transmission powers be so low because of the existing line of sight can, that at the same frequency for the same period after a few kilometers away can be used again.
Die Sendeempfänger S/E werden vorteilhaft mit den Informationserfassern (Sensoren, Bildaufnehmer ...) integriert und von einem Solargenerator gespeist. Alle Funktionen, die nicht zu bestimmten Zeiten gebraucht werden, schaltet eine Zeitschaltuhr, die jedem Sendeempfänger zugeordnet ist, ab. Die Uhren aller Sendeempfänger sind synchronisiert, beispielsweise durch ein gemeinsames hochgenaues Funksignal. Die Uhr steuert ebenfalls alle zeitlichen Abläufe der Sendeempfänger S/E und des zentralen Empfängers E.The transceivers S / E are advantageous with the information gatherers (Sensors, imagers ...) integrated and from powered by a solar generator. All features not to certain times, a timer switches, which is assigned to each transceiver. The Clocks of all transceivers are synchronized, for example by a common high-precision radio signal. The clock controls likewise all temporal sequences of the transceivers S / E and of the central recipient E.
Jeder Berechtigte kann entsprechend dem Umfang seiner Berechtigung die Informationen der Sendeempfänger, der zentralen Empfänger oder des übergeordneten Systems abrufen. Die übertragenen Informationen können Statusmeldungen von Sensoren, Bilddaten von Kameras, Meldungen von Notruftasten etc. sein.Each entitled person can according to the extent of its authorization the information of the transceivers, the central Retrieve the recipient or the parent system. The transferred Information can be status messages from sensors, image data of cameras, notifications of emergency call buttons, etc.
Bei dem System können die Fahrzeuge ebenfalls zeitsynchrone Sender benutzen. Mit Betätigung der Warnblinkanlage, des Airbags, der Gurtsensoren oder einer Notfalltaste wird ein Telegramm zu den fest installierten Sendeempfangs-Einheiten S/E geschickt. Diese hören in einem überall gleichen Zeitschlitz periodisch auf solche Notfalltelegramme. Der Inhalt kann sein: Fahrzeugkennzeichen, Notfalltaste betätigt und/oder Airbag, Gurtsensor, Warnblinker o.ä. ausgelöst. Der zentrale Empfänger E erhält nach Durchlauf der Eimerkette diese Information, fügt die Ortsinformation und die Uhrzeit zu und übergibt an das übergeordnete System, das die Information an das Servicecenter SC weiterleitet. Wenn ein Fahrzeug zusätzlich einen zeitsynchronen Empfänger besitzt, kann die Notfallmeldung eines anderen Fahrzeugs auch längs der gefahrenen Strecke abgehört werden, auf der die Notfallmeldung gerade im Eimerkettenverfahren transportiert wird.In the system, the vehicles can also be time-synchronous Use transmitter. With operation of the hazard warning lights, the Airbags, the belt sensors or an emergency button is a Telegram to the permanently installed transceiver units S / E cleverly. These listen in a same time slot everywhere periodically on such emergency telegrams. The content can be: Vehicle registration number, emergency button pressed and / or airbag, Belt sensor, hazard warning lights or similar triggered. The central receiver E gets this information after passing the bucket chain, adds the location information and the time to and transfers to the Parent system that sends the information to the service center SC forwards. If a vehicle additionally has a time-synchronous Recipient owns, can the emergency message of another Vehicle can also be intercepted along the route traveled, on the emergency message just in the bucket-chain procedure is transported.
Der zentrale Empfänger (Kästchen A in Fig. 2) kann auch zusätzlich mit einem Sender ausgerüstet sein (strichliert umrandetes Kästchen B in Fig. 2). Dann können auch beliebige Meldungen, die für die jeweilige Strecke interessant sind, per Eimerkette zu den Fahrzeugen übertragen werden. Dies erfolgt in einem anderen Zeitzyklus und mit umgekehrter Zeitfolge, so daß sich die Nachricht vom zentralen Sendeempfänger wegbewegt.The central receiver (box A in Fig. 2) may also be additional be equipped with a transmitter (dashed rimmed Box B in Fig. 2). Then any messages, which are interesting for the respective route, by bucket chain be transferred to the vehicles. This is done in one other time cycle and with reverse timing, so that the message moves away from the central transceiver.
In vorteilhafter Ausgestaltung des Systems ist ferner vorgesehen, daß zu bestimmten Zeiten von jeder Sendeempfang-Station S/E anstelle einer Meßwertmeldung ein Testtelegramm verschickt wird, um die Funktion der Eimerkette bzw. der Sendeempfänger zu prüfen und mögliche Defekte zu lokalisieren. In an advantageous embodiment of the system is also provided that at certain times from each transceiver station S / E sends a test telegram instead of a measured value message is to the function of the bucket chain or the transceiver to check and locate possible defects.
Sensoren im Fahrzeug können Meldungen über Geschwindigkeit, Motordrehzahl, "Zündung Ein", etc. zu einer Fahrzustandssituation zusammenfassen, die zu den fest installierten Sendeempfänger-Einheiten geschickt und zur Zentralstation weitergereicht werden, wo sie zusammen mit den Informationen anderer Fahrzeuge ausgewertet werden.Sensors in the vehicle can send messages about speed, Engine speed, "ignition on", etc. to a driving condition situation to the fixed transceiver units sent and passed on to the central station Be where they are together with the information of other vehicles be evaluated.
Claims (14)
- System for acquiring information obtained along predefined traffic routes and for transmitting the information to central points, characterised by information acquisition units (IE) arranged at the relevant points, which are connected to transmit/receive units (S/E), via which the information is forwarded as far as a central station in predefined time periods in a chain via respectively adjacent stations.
- System according to claim 1, characterised in that during forwarding from the transmit/receive unit to the respectively adjacent transmit/receive unit (S/E) the data from the information acquisition units connected respectively to the transmit/receive units (S/E) is inserted into a telegram.
- System according to claim, characterised in that the data set of the connected information acquisition unit is transmitted individually in a specific bucket brigade cycle for each transmit/receive unit.
- System according to claim 1, characterised in that the report telegram is extended each time it is forwarded to the next station to include the report element associated with said transmitting station.
- System according to one of claims 1 to 4, characterised in that one or more bucket brigade systems is/are connected to a central receiver (A), which collects the information and routes it to a second information system, the centre of which evaluates the data and distributes it to the road users.
- System according to one of claims 1 to 5, characterised by selection of the transmit/receive time periods such that only one frequency is required for all transmit/receive units (S/E) of all bucket brigade systems.
- System according to one of claims 1 to 6, characterised in that the transmit/receive units (S/E) are integrated with the information acquisition units (IE).
- System according to one of claims 1 to 7, characterised in that all functions that are not required at certain times are disconnected by means of a time switch clock assigned to each transmit/receive unit and in that the time switch clocks of all transmit/receive units are time-synchronous in respect of each other.
- System according to one of claims 1 to 8, characterised in that any authorised party can call up information from the transmit/receive units, the central receiver (A) and the higher-order system according to the scope of their authorisation.
- System according to one of claims 1 to 9, characterised in that the vehicles use time-synchronous transmitters and receivers.
- System according to claim 10, characterised in that on activation of certain vehicle devices (hazard light system, airbag, belt sensor, etc.) a telegram is sent to the permanently installed transmit/receive units, which respond to such telegrams periodically in a universally identical time slot.
- System according to one of claims 1 to 11, characterised in that the central receiver (A) is also equipped with a transmitter to transmit any reports of relevance to the respective route by means of the bucket brigade system to the vehicles.
- System according to one of the preceding claims, characterised in that a test telegram is sent at specific times from every transmit/receive station instead of a data report, to verify operation and locate possible defects.
- System according to claim 10, characterised in that sensors in the vehicle combine reports about velocity, engine speed, "ignition on", etc. to provide a vehicle status report, which is sent to the permanently installed transmit/receive units and forwarded to the central station, where it is evaluated along with information from other vehicles.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19512494 | 1995-04-04 | ||
DE19512494 | 1995-04-04 |
Publications (3)
Publication Number | Publication Date |
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EP0736981A2 EP0736981A2 (en) | 1996-10-09 |
EP0736981A3 EP0736981A3 (en) | 1999-04-07 |
EP0736981B1 true EP0736981B1 (en) | 2005-11-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP96105001A Expired - Lifetime EP0736981B1 (en) | 1995-04-04 | 1996-03-28 | System for acquiring and transmitting information to central points |
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EP (1) | EP0736981B1 (en) |
DE (1) | DE59611297D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CA2263031A1 (en) * | 1999-02-26 | 2000-08-26 | Kasten Chase Applied Research Limited | Communications based train control |
DE10317966A1 (en) * | 2003-04-17 | 2004-11-18 | Siemens Ag | System for determining traffic data |
US20050174974A1 (en) * | 2003-08-19 | 2005-08-11 | Sonntag Artur H. | System and method for roaming in data -and communication- networks |
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GB1435415A (en) * | 1974-03-18 | 1976-05-12 | Tesla Np | Vehicle-emergency call system |
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US4812843A (en) * | 1987-05-04 | 1989-03-14 | Champion Iii C Paul | Telephone accessible information system |
DE3918668A1 (en) * | 1989-06-08 | 1990-12-13 | Philips Patentverwaltung | Traffic information transmitter for motor vehicles - uses existing mobile radio network with vehicle-mounted electronic equipment to display information |
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1996
- 1996-03-28 EP EP96105001A patent/EP0736981B1/en not_active Expired - Lifetime
- 1996-03-28 DE DE59611297T patent/DE59611297D1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1435415A (en) * | 1974-03-18 | 1976-05-12 | Tesla Np | Vehicle-emergency call system |
Also Published As
Publication number | Publication date |
---|---|
EP0736981A2 (en) | 1996-10-09 |
DE59611297D1 (en) | 2005-12-29 |
EP0736981A3 (en) | 1999-04-07 |
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