Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
  • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
  • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
  • G01C21/34—Route searching; Route guidance
  • G01C21/36—Input/output arrangements for on-board computers
  • G01C21/3626—Details of the output of route guidance instructions
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
  • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
  • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
  • G01C21/34—Route searching; Route guidance
  • G01C21/36—Input/output arrangements for on-board computers
  • G01C21/3626—Details of the output of route guidance instructions
  • G01C21/3655—Timing of guidance instructions

Definitions

• the invention relates to a method and an arrangement for outputting a direction information according to the type of independent
• Car navigation systems known per se calculate, based on stored road map data with a best-path algorithm, a driving route from a vehicle location, which is determined by a locating device, to a destination specified by the user / vehicle driver. Based on this route and one in the course of the journey along the
• Driving route repeatedly determined respective vehicle location are output to the driver guidance instructions that guide them along the route.
• These routing instructions for example, in the form of "turn right at the next intersection and then follow the x-road" can be reproduced acoustically via speakers connected to the navigation system.
• Guidance information advantageous location information that are listed on along the route traveled road signs.
• a particular facilitation for the user results from the fact that in the case of multiple location information relating to the section of the route that immediately follows the route segment currently being traveled, the one or more of the location information is or will be used as the output of the direction information. which has or has the greatest frequency for the route sections which continue directly following the following route section.
• the number of location information to be output as a component of the direction information can ideally be reduced to a single location information which, moreover, remains the same in the further course of the route for a plurality of successive route sections and thus directional indications.
• the user can advantageously orient themselves based on location information which is at least partially constant, which experience has shown is also a considerable relief.
• the location information may be, in particular, the information displayed on the highway information signs about long-distance and short-range destinations, which can be reached via a current or a branching section of the route.
• the location information for example, but also hints about urban destinations, be about a town center, an infrastructure facility, such as zoo, hospital, train station or the like.
• the route is analyzed from the destination to the current position.
• the analysis preferably takes into account all on-route road sign location information and determines the frequency of occurrence of each location information of each road sign.
• the determination of the location information to be based on a direction information is triggered again after passing through a section of the route.
• the determination of the location information to be used as the basis for direction information may be triggered again after passing a traffic sign carrying a location information.
• the determination of the location information to be based on direction information is based on identical traffic signs only.
• FIG. 1 shows a block diagram of an inventive arrangement for carrying out the method according to the invention using the example of a
• FIG. 2 schematically shows a detail of a traffic route network, in this case specifically a road network, on the basis of which the mode of operation of the invention is described below,
• FIGS. 3A, 3B and 3C show, by way of example, signs which are set up along the route.
• 100 denotes a navigation system according to the invention for carrying out the method according to the invention.
• the navigation system 100 includes a location module 11 for determining a current location and thus for determining the current location of its user. This evaluates, for example, signals of a GPS receiver 111 and optionally further
• Location determining means such as acceleration sensors 112, and determined therefrom by means of a software module 113, which is processed, for example by a central controller 14 of the navigation device, position data.
• the navigation device 100 further comprises a digital map 12 in which
• the digital card 12 may preferably be formed in a manner known per se as a CD-ROM or DVD-ROM 122, which is read by means of a corresponding drive 121 of the navigation device 100.
• map data are further information about along the
• Road sections 1, 2, 3, 4 and 5 erected signs 21, 22, 23 and 24 and their contents or inscriptions included.
• motorway information signs these are, inter alia, place names of cities which correspond to the terminus points of the individual motorway sections listed in the federal road network plan.
• these include
• location information For example, but also references to inner city destinations, such as a town center, an infrastructure facility, such as zoo, hospital, train station or the like or even extra-urban destinations, such as place names of villages and communities, adventure parks, special attractions, such as castles and palaces, reservoirs or the like.
• the navigation system 100 further comprises a user interface 13 comprising input means 131, such as push-buttons or other operating elements, such as a voice input module or a touch-sensitive screen, also touch screen, as well as output means 132 in the form of a display
• the user interface serves on the one hand the destination input by the user, on the other hand the route guidance along a route calculated by the navigation system, for example by output of acoustic or indication of optical guidance indications, here also referred to as direction information.
• the navigation system 100 further has a central controller 14, which is designed in the form of a program-controlled computer.
• a central controller 14 which is designed in the form of a program-controlled computer.
• another software module 133 controls the user interface 13 d. H. the communication of the navigation device with the
• a third software module 141 controls the information exchange and the information processing within the navigation system 100, including the route calculation using the map data using a best-path algorithm such as Ford-Moore, and also the method according to the invention.
• a travel route 10 calculated by the navigation system after entering the destination Dortmund via the input means 131 leads, for example, from Hildesheim, Robert-Bosch-Strasse, to Dortmund, city center.
• the route runs from Hildesheim via the Hildesheim motorway junction on the A7 motorway via the A7 motorway in a northerly direction to the Hannover-Ost interchange, where the A7 and A2 motorways intersect, and from there via the A2 motorway Head west via the motorway junction Hannover- Burgdorf, where the A2 and A37 motorways intersect, to the Dortmund-Nordost junction on the A2 motorway and from there via the B236 federal road to Dortmund.
• FIG. 2 diagrammatically shows a section of the traffic route network, comprising the two above-mentioned motorway junctions with the route course drawn therein.
• A7 denote the A7 motorway with the direction of Hamburg HH and Bremen HB and the opposite direction Kassel KS and Göttingen GT, A2 the A2 motorway with the directions Berlin B and
• a section of the route 10 calculated by the vehicle navigation device, shown above in bold lines, is drawn into this road network section. This is composed here of successive sections 1, 2, 3, 4 and 5, which sections are each bounded by possible branch points Vl, V2, V3, V4 of the route.
• the section 1 is given by the route motorway Hildesheim on the A7 to exit at the interchange Hannover East AK HA-O of the A7.
• the further section 2 is defined by the exit from the motorway junction Hannover-East AK HA-O from the A7 and the following turn lane to the point V2, where the turn lane further direction branching point V3 followed or alternatively bent from the turn lane direction A2, Berlin can be.
• the further route section 3 is defined by the branching point V2 and the further branching point V3 on the turning lane, where either straight ahead again on the A7 towards Hamburg or alternatively can be bent according to the route from the turn lane to the right to the A2 direction Dortmund strigfahren.
• the fourth route section 4 extends from the third branch point V3 to the next branch point V4, at which the A2 is driven onto the A37 in the direction of Hannover or CeIIe or, alternatively, according to FIG Route can be followed the A2 in the direction of Dortmund.
• the fifth route section 5 follows the fourth route section.
• shield 2 On a further signpost plate 22 according to Figure 3B, hereinafter "shield 2", which is located immediately in front of or on the turn lane 2 of the A7, there is the location information or driving direction instructions
• shield 4" On another signpost plate 24 according to Figure 3C, hereinafter "shield 4", which comes along the route from Hildesheim before the
• shield 3 installed, which the driving direction instructions
• the directions from directions described here include, as an essential part, location information in each case, in the present case place names of cities, which correspond to the terminus points of the individual motorway sections listed in the Federal Road Network Plan. Specifically, these are the city names Hamburg for the considered section of the A7, Berlin and Dortmund for the considered section of the A2 and Hannover for the A37. In addition, in some cases, location information for nearer important points along these sections of the motorway are given, as Braunschweig for the A2 east direction, Hannover, airport and later Bielefeld for the A2 west direction.
• the method according to the invention generates the route guidance information to be output by it for destination guidance, including direction information, using or including location information indicated on the information signs. Only such location information of a
• Direction information that does not affect the route is not taken into account.
• the presentation of the direction information would then include the following location information.
• the complete driving instructions could then be:
• This representation can be achieved, for example, by analyzing the route from the destination to the current position.
• the analysis preferably takes into account all traffic sign location information occurring on the route and determines the frequency of occurrence of each individual location information of each traffic sign.
• the result of the analysis would be as follows in the example described.
• This analysis is preferably performed for the first time after completion of the route calculation in the controller 14 by the software 141.
• the route is available as a sequence of successive route sections in a memory of the navigation system 100, preferably in the main memory of the controller 14.
• location information existing on the stored route sections in the map, which are indicated on the traffic signs along the route, are read out and the analysis is performed on the basis of this information.
• An advantageous development of the invention provides that the above analysis is carried out not only once at the beginning of the route guidance or after completion of the route calculation, but preferably repeatedly. For example, the analysis can be triggered again after passing or covering a route section.
• the frequency distribution of the location information in the course of the route change, for example, when the route turns from a first-traveled to another highway.
• the determination of the location information to be based on a direction information can be triggered again after passing a traffic sign carrying a location information.
• the determination of the location information to be based on directional information is based on identical traffic signs only, ie, for example, only direction signs, but not, for example, distance tables on which
• Distances are given for locations accessible via the current road. Alternatively, however, it is also possible, for example, to take account of these distance plates or signs bearing other location information for the determination of the relevant location information.

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• Engineering & Computer Science (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• Automation & Control Theory (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Navigation (AREA)

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Citations (2)

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• 2007
  • 2007-05-22 DE DE102007023765A patent/DE102007023765A1/de not_active Ceased
• 2008
  • 2008-03-26 JP JP2010508758A patent/JP5119322B2/ja not_active Expired - Fee Related
  • 2008-03-26 EP EP08718210A patent/EP2156142B1/de not_active Not-in-force
  • 2008-03-26 US US12/450,854 patent/US20100191465A1/en not_active Abandoned
  • 2008-03-26 WO PCT/EP2008/053534 patent/WO2008141855A1/de not_active Ceased

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