EP2947794A1 - Procédé et dispositif destinés au traitement d'informations dans un système d'informations et d'assistance au conducteur - Google Patents

Procédé et dispositif destinés au traitement d'informations dans un système d'informations et d'assistance au conducteur Download PDF

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Publication number
EP2947794A1
EP2947794A1 EP15168978.3A EP15168978A EP2947794A1 EP 2947794 A1 EP2947794 A1 EP 2947794A1 EP 15168978 A EP15168978 A EP 15168978A EP 2947794 A1 EP2947794 A1 EP 2947794A1
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EP
European Patent Office
Prior art keywords
value
horizon
boundary
new
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15168978.3A
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German (de)
English (en)
Inventor
Dipl.-Inf. Porstmann (FH) Frank
Marco Kruse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Preh Car Connect GmbH
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Technisat Digital GmbH
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Filing date
Publication date
Application filed by Technisat Digital GmbH filed Critical Technisat Digital GmbH
Publication of EP2947794A1 publication Critical patent/EP2947794A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • H04H60/61—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
    • H04H60/65—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 for using the result on users' side
    • 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

Definitions

  • the invention relates to a method for processing information in a vehicle assistance and information system in which data on traffic and additional information from the vehicle assistance and information system is received, processed and output, wherein a determination of a value for a horizon boundary H (start horizon) takes place and only those received data for processing by the vehicle assistance and information system are selected, which have a location that is within the defined horizon boundary H.
  • the invention also relates to a device for processing information in a vehicle assistance and information system, comprising means for receiving wirelessly transmitted data on traffic and additional information, means for selecting and processing the received data, means for outputting the processed data and means for storage this data, an algorithm controlling the process and associated values.
  • Vehicle assistance and information systems can receive their data using various data transmission standards. Usually such data received terrestrially or via satellite are processed in these systems, that is, for example, decoded, and the user of the vehicle optically provided by means of a display or acoustically as a sound output.
  • FM broadcasting can be used in the range between 87.5 MHz and 108.0 MHz or in other countries deviating areas or only partial areas.
  • This traffic information can be transmitted without affecting the audible range using the digital TMC (Traffic Message Channel) method.
  • data can also be transmitted in the digital transmission standard Digital Audio Broadcasting (DAB).
  • DAB Digital Audio Broadcasting
  • Transmission standards such as GPRS, UMTS, WLAN or message service systems such as SMS or MMS can also be used to transmit data for a vehicle assistance and information system.
  • data transmission standards in the area of satellite communications are offered in order to be able to provide information to areas with a large area of expansion.
  • An example of this is the Sirius satellite radio offered in the USA and Canada, which can be received in a vehicle with a correspondingly equipped car radio.
  • the information provided by vehicle assistance and information systems to a user or driver of a motor vehicle may include, but is not limited to, traffic reports, weather information, gas station messages, and much other information.
  • Such information should assist the driver, for example, in planning a route and also ensure that the driver reaches his destination as quickly as possible and resource-friendly even with restrictions on the planned route through construction sites, traffic jams or other obstructions.
  • route-related information about petrol stations, restaurants, hotels, destinations, the weather and much more can be provided.
  • the data received from a mobile vehicle assistance and information system are processed internally in a central processing unit, for example a processor (CPU), before the data can be made available to the user.
  • a central processing unit for example a processor (CPU)
  • the processing speed of this data is determined, for example, by the number of parallel processing units available in the processor, the amount of available internal memory, the size of the supply voltage, and the processor clock.
  • a method and a device for detecting relevant traffic obstructions in a non-navigational state in a navigation system are known.
  • location-dependent environmental parameters such as a road type, a vehicle position inside or outside a town, a driving history on the route, a straight traveled region and the direction of travel are determined.
  • a determination of a distance between the location of a received traffic jam and the vehicle position is determined, and informing the driver of this traffic jam if the driver falls below a specified or determined distance.
  • the method performs a selection of the received traffic messages according to their distance and importance to the driver. There is no provision for influencing or restricting the input data volume to be processed by the system.
  • the radius is determined manually by an input or selection of the driver. Alternatively, it is provided to set the circumference speed-dependent, using a processor. A restriction on the amount of data to be decoded is not provided.
  • an apparatus and a method for adapting a calculated route to current traffic events in a navigation device are known.
  • a data manager is provided which filters received traffic messages and evaluates (weighted) and transmits from an input-side message pool in a buffer pool. So it can be ensured that only traffic reports are transferred to the memory, which belong to the area that is currently being driven by the vehicle.
  • the data manager will control the time intervals between pool updates. This happens as a function of the amount of the current traffic volume and the distance of a traffic event to the navigation device.
  • the storage of the traffic reports in a buffer pool also has the advantage that traffic reports are available for checking and adapting or revising a calculated route even if the transmission channels are disturbed. Again, this solution does not limit the amount of data to be decoded.
  • a device for outputting traffic information in a motor vehicle stores the traffic messages transmitted to it together with their respective positions on a link.
  • a computing and control unit of the device compares the positions of the traffic reports with the current position of the vehicle and thus determines a respective distance.
  • the traffic reports are now sorted according to their distance and output one after the other, starting with the traffic message at which the smallest distance has been determined.
  • This device also does not affect or limit the amount of input data to be processed by the system.
  • a significant disadvantage of the prior art is that no consideration of the amount of data to be processed takes place, which delays or prevents a provision of information for the user with a correspondingly large volume of data and / or limited performance of the data processing unit.
  • the object of the invention is therefore to provide a method for processing information in a vehicle assistance and information system, with which a reliable provision of traffic and additional information is achieved.
  • the information should be reliably provided to the user even with a large amount of data to be processed and / or at a low processing speed of the central processing unit in the vehicle assistance and information system.
  • the object is achieved with a method of the type mentioned above in that the value for the horizon boundary H is redetermined as a function of a quotient Q after a certain time, wherein the quotient Q is a ratio between a fixed maximum allowable decoding time ( t zul ) and a time measured for a decoding process of a complete data set (t ben ) is formed.
  • a setting of a horizon dependent on the amount of data to be processed and / or the processing speed of a processor provided in a vehicle assistance and information system is achieved by measuring the time t ben for a decoding process of a complete data record. This time measurement can be done both by the processor itself as well as by means of appropriately configured digital modules.
  • As a complete data set all data of the traffic and additional information received, for example via a satellite antenna and an associated Sirius satellite receiver and transmitted to the processor for processing understood, which lie with their locality within the currently set radius or horizon. Received data which lie outside the set horizon H with their locality are not supplied to the decoding process in the processor. Selection of this non-process-relevant data can, for example, be carried out using information contained in the RDS-TMC code (RDS) such as the direction of the road segment, country code, location database number, RDS direction and location code.
  • RDS-TMC code RDS-TMC code
  • traffic and ancillary information data may also be received via a broadcast antenna and associated broadcast radio, decoded in an RDS decoder, and submitted to the processor for processing.
  • the predetermined time t the method permissible, for example, an experience value and is stored in its digital representation in a processor connected to the volatile or non-volatile memory and controlled by the read procedure on demand from this.
  • the value of the horizon H is reset after a complete data record has been decoded.
  • a predetermined period of time for example 1 minute, since the last setting of the value can be waited before the value is reset.
  • the value of the formed quotient Q is greater than 1, the value of the horizon boundary H is increased, in the case that the value of the formed quotient Q is less than 1, the value of Horizon boundary H is reduced and in the event that the value of the formed quotient Q is equal to 1, the value of the horizon boundary H is maintained.
  • the value of the horizon boundary H is periodically redetermined.
  • the redefinition of the value of the horizon boundary is provided recurrently.
  • a timer available in the processor can be used.
  • the new determination of the value of the horizon boundary H takes place such that the value of a new horizon boundary H (H new ) results from a value of the currently set horizon boundary H (Hakt) multiplied by the quotient Q.
  • a check of the value of the new horizon boundary H takes place with a permissible value range, which is formed by means of a minimum and a maximum permissible range value, and in the case that the value of the new Horizon limit H is outside the permissible value range, the value of the new horizon limit H is shifted to the permissible value range.
  • a processor is provided, controlled by a suitable algorithm.
  • the quotient Q is influenced by the measured time t ben and it can be subject to strong fluctuations
  • the specific value for the horizon H would also be subject to strong undesirable fluctuations.
  • One way to avoid such fluctuations is to specify a range within which a variation of the value for the horizon H is allowed. This area is limited by a lower and an upper value.
  • a difference between the value of the new horizon boundary H (H new ) and the value of the currently set Horizon boundary H is calculated that a limit for the maximum difference is set and that in the event that the calculated difference exceeds the limit, a shift of the value of the new horizon boundary H is such that the limit is not exceeded.
  • Another way to limit the fluctuations in the value of the horizon H is to allow only changes in a given range of the value. For example, it specifies that the value may only deviate upwards or downwards by 20 percent from the previously valid value for horizon H.
  • Such specifications are stored as digital values in the memory. Compliance with these specifications is monitored by the processor.
  • the object is achieved with a device of the type mentioned above in that the means for processing the data is a processor, that the processor includes a measuring arrangement for determining a time (t ben ) for decoding a complete data record that the Processor is designed such that it determines a value for the horizon boundary H in response to a quotient Q after a certain time, the quotient Q from a ratio between a fixed maximum allowable decoding time (t zul ) and that for a decoding process of a complete record measured time (t ben ) is formed and that the processor has an internal memory or a memory connected to the processor, in which at least the values for the horizon boundary H, the allowable decoding time (t zul ), a start horizon and horizon limits are stored.
  • the information processed by the device is traffic and ancillary information provided as data from various sources.
  • the device has means for receiving this data.
  • Such means may be a broadcast antenna with a radio receiver and a RDS decoder or a satellite antenna with an associated satellite receiver.
  • the data selection means may be selected by the means for selecting the received data their place information falls into a currently defined horizon H.
  • the data selected for processing is decoded in the means for processing the data, which is a processor, and buffered in a memory.
  • This memory may be processor-integrated or processor-attached memory. It can also store a program controlling the entire process sequence and values required by the process, such as the start horizon, the calculated horizon limit H, the allowable decoding time (t zul ), the minimum and maximum horizon limits, and other values.
  • the processor has units for measuring the decoding time t ben and for calculating the new horizon boundary H new according to the procedure described and has an internal program and data memory.
  • the processor is also connected to at least one external memory, such as a RAM and / or a flash memory.
  • This radius can be described by a radius r.
  • this radius can also represent a surface, for example a circular surface with the radius r.
  • the boundary of such a circular area, that is to say the circumference of the circle, will hereinafter be referred to as the so-called horizon boundary or horizon.
  • the present invention allows an intelligent extension or reduction of the vehicle assistance and information system adapted thereto Horizon boundary or value indicating the horizon boundary.
  • the evaluation basis for this adaptation of the horizon boundary is the time required to decode a complete data set. This dataset contains all traffic and additional information received within the current horizon boundary or valid with its location within the horizon boundary.
  • the time to collect the data of the data record can be included in the calculation.
  • the required time is set in relation to a given maximum allowed time.
  • the "old horizon" H old represents the value of the currently set horizon boundary H with which the vehicle assistance and information system is currently being operated.
  • the "maximum allowable time” t zul represents the maximum allowable or allowable time for decoding a complete data set. This time may be an empirical value and is set, for example, at the beginning of the procedure.
  • the "required time” t ben is the time required to decode the data of a complete data set and is measured in the process.
  • the value of the horizon boundary H ie the radius r around the vehicle, within which traffic and additional information can be taken into account in the processing of the data, can be increased.
  • the time t ben required for decoding the data of a complete data set is greater than the maximum permitted time t zul , which may completely prevent provision of information for the driver or a navigation system for route planning.
  • the current horizon limits with the corresponding value can be used for the newly calculated horizon.
  • the procedure stipulates that all traffic and additional information belonging to locations that are outside the current horizon are automatically filtered out by the system and ignored.
  • start the process for example, with a specified lower start value as the start horizon for the minimum horizon boundary.
  • a limitation in the setting of the starting horizon is according to the method but not provided, so any other value can be set to start, for example, an empirical value.
  • a value for a maximum horizon boundary can be set. In order to avoid an extreme shift in the new horizon boundary to be calculated, according to the method a change in the horizon boundaries is allowed only within the range between the minimum and maximum horizon limits.
  • a further limitation of the change in the horizon boundaries can be such that an increase or decrease in the horizon limits only by one certain factor is allowed. For example, a magnification is only allowed to double and / or a reduction is allowed only up to half. Again, the horizon boundaries must remain between minimum and maximum horizon boundary.
  • the radius r is prevented from going to infinity if the time required for data processing t approaches 0.
  • the method makes it possible to use a land area covered by the horizon (circular area A) as the basis for calculating the horizon.
  • the radius r alt of the current horizon is converted into a circular area A alt before the recalculation.
  • the radius r alt of the current horizon is converted into a circular area A alt before the recalculation.
  • Following the recalculation of the circular area A is new this in the new radius r newly converted and represents the new frontier border.
  • the FIG. 1 shows a block diagram of a vehicle assistance and information system, designed as a navigation device 1.
  • the navigation device 1 runs the described method.
  • the navigation device 1 has a GPS receiver 3, which is connected to an external GPS antenna 2.
  • a main tuner 7 and, for example, a plurality of background tuner 8 are provided for receiving broadcast signals, which may be connected to a common broadcast antenna 6.
  • the navigation device 1 further has a decoder, which may be, for example, a Sirius decoder 5 and is connected to an externally arranged satellite antenna 4.
  • a decoder which may be, for example, a Sirius decoder 5 and is connected to an externally arranged satellite antenna 4.
  • the navigation device 1 has a processor 9, which is connected to at least one RAM 10 and / or a flash memory 11.
  • the processor 9 is on the input side with the GPS receiver 3, for receiving position data, a plurality of RDS decoders 12 and the Sirius decoder 5, for receiving connected to data for traffic and additional information.
  • the RDS decoder 12 each have an input for connection to the background tuners 8 and the main tuner 7.
  • a stereo decoder 13 is arranged in the navigation device 1, which is the input side connected to the main tuner 7 and the output side is connected to an audio amplifier 14, which provides an audio output signal.
  • the processor 9 For the visual representation of the data processed in the processor 9, for example for the user of a vehicle, the processor 9 is connected to an externally arranged display 15.
  • FIG. 2 a flow chart of the described method is shown.
  • the definition of initial parameters for the method takes place.
  • the start horizon and the maximum permissible decoding time of the method for the decoding of a complete data set are determined.
  • the starting horizon which may represent a radius r or an area A, it is assumed, for example, that at the beginning of a journey only data from a small radius around the user's vehicle is of interest.
  • the determination of the starting horizon can be determined on the basis of experience, the last used horizon or from the user's input.
  • the use of initial parameters permanently stored in a data or program memory is also provided.
  • the determination of the maximum allowed decoding time can be based on empirical values and should ensure that the required decoded information is provided to the user in a reasonable time.
  • Further initial parameters are values for a minimum and a maximum permissible horizon value. This ensures on the one hand that not unnecessarily many traffic and additional information is provided and on the other hand a basic supply of information is ensured.
  • the decoding is started in block 18.
  • a complete data record is entered by the processing unit of the vehicle assistance and control unit Information system in block 19 decoded. This pass is also referred to as a complete carousel or a complete pass.
  • the end of the decoding process in block 20 is reached.
  • the required decoding time for a complete run in block 21 is determined.
  • a timer (timer) can be started and stopped when the block 20 is reached.
  • new horizon old horizon * maximum allowed time / needed time
  • the recalculated horizon according to the method can be far away from the previously used horizon and thus represent a too large or too small horizon boundary.
  • a check of the newly calculated horizon boundary is carried out in step 23 with the minimum and maximum limits set in step 17 for the horizon boundary in the processor.
  • step 23 If, in this test, it is determined in step 23 that the newly calculated horizon boundary lies outside the tolerance range specified by the minimum and maximum horizon limits, ie the given horizon limits are violated, a correction is carried out in step 24 by the processor such that the new horizon boundary in the tolerance range is shifted.
  • step 23 If, during this test, it is determined in step 23 that the newly calculated horizon boundary is within the tolerance range specified by the minimum and maximum horizon limits, the newly calculated horizon is not changed.
  • step 25 either the horizon H recalculated in step 22 or the horizon H corrected in step 24 is taken over for further processing and stored in a memory.
  • step 25 further checks of the value of the new horizon H are made in order to increase the reliability of the procedure.
  • the method is continued in a further pass with the new horizon H new in step 18. This run is repeated as often as long as the vehicle assistance and information system is operated.
  • the starting horizon is set at 100 km as the radius around the vehicle, within which a search for relevant traffic information should be based on their location information.
  • the required decoding time t ben is determined at 3 minutes in step 21 and is thus within the permissible time range of 10 minutes.
  • step 23 Since the value of the new horizon H new is 333 km smaller than the predetermined maximum horizon boundary with 1000 km, the question is answered in step 23 with "no" and the process continues in step 25.
  • the processor in the newly calculated horizon H new (333 km) differs only in a preset frame from the previous value.
  • the new horizon H new for example, in step 25, reduced to 200 km.
  • a divider of 2 only allows a reduction of the search radius to a value of 400 km.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Navigation (AREA)
  • Traffic Control Systems (AREA)
EP15168978.3A 2014-05-23 2015-05-22 Procédé et dispositif destinés au traitement d'informations dans un système d'informations et d'assistance au conducteur Withdrawn EP2947794A1 (fr)

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DE102014209850.5A DE102014209850B4 (de) 2014-05-23 2014-05-23 Verfahren und Vorrichtung zur Verarbeitung von Informationen in einem Fahrzeugassistenz- und Informationssystem

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Citations (5)

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Publication number Priority date Publication date Assignee Title
DE4445582C1 (de) * 1994-12-20 1996-03-21 Deutsche Automobilgesellsch Verfahren und Einrichtung zur Ausgabe von Verkehrsstörungsmeldungen in einem Fahrzeug
EP1538582A2 (fr) 1999-03-01 2005-06-08 Nokia Corporation Procédé d'émission d'information routière dans un véhicule
DE102009031480A1 (de) 2008-07-02 2010-01-07 Navigon Ag Verfahren und Vorrichtung zur Erkennung relevanter Verkehrsbehinderungen in einem nicht navigationsführenden Zustand
EP2386830A2 (fr) 2010-05-12 2011-11-16 Technisat Digital Gmbh Appareil de navigation assisté par satellite doté d'un dispositif et d'un procédé d'adaptation à une route prédéterminée selon des évènements de circulation
DE102007048910B4 (de) 2006-10-12 2013-05-16 Visteon Global Technologies, Inc. Programmierbares dynamisches routenspezifisches Verkehrswarnsystem

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
DE19637127A1 (de) * 1996-09-12 1998-03-19 Mannesmann Vdo Ag Verfahren zur fahrtroutenspezifischen Selektion von Verkehrsinformationen und Empfangsgerät zum Ausführen des Verfahrens
DE19847849A1 (de) * 1998-10-16 2000-04-27 Nokia Mobile Phones Ltd Verfahren und Vorrichtung zur Selektion von Verkehrsinformation für ein Kraftfahrzeug
TWI290619B (en) * 2006-11-06 2007-12-01 Sin Etke Technology Co Ltd Vehicle dynamic navigation method and system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4445582C1 (de) * 1994-12-20 1996-03-21 Deutsche Automobilgesellsch Verfahren und Einrichtung zur Ausgabe von Verkehrsstörungsmeldungen in einem Fahrzeug
EP1538582A2 (fr) 1999-03-01 2005-06-08 Nokia Corporation Procédé d'émission d'information routière dans un véhicule
DE102007048910B4 (de) 2006-10-12 2013-05-16 Visteon Global Technologies, Inc. Programmierbares dynamisches routenspezifisches Verkehrswarnsystem
DE102009031480A1 (de) 2008-07-02 2010-01-07 Navigon Ag Verfahren und Vorrichtung zur Erkennung relevanter Verkehrsbehinderungen in einem nicht navigationsführenden Zustand
EP2386830A2 (fr) 2010-05-12 2011-11-16 Technisat Digital Gmbh Appareil de navigation assisté par satellite doté d'un dispositif et d'un procédé d'adaptation à une route prédéterminée selon des évènements de circulation

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