WO2016020728A1 - Method and system for navigating a motor vehicle - Google Patents

Method and system for navigating a motor vehicle Download PDF

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Publication number
WO2016020728A1
WO2016020728A1 PCT/IB2014/063794 IB2014063794W WO2016020728A1 WO 2016020728 A1 WO2016020728 A1 WO 2016020728A1 IB 2014063794 W IB2014063794 W IB 2014063794W WO 2016020728 A1 WO2016020728 A1 WO 2016020728A1
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WO
WIPO (PCT)
Prior art keywords
sector
destination
motor vehicle
sectors
road junction
Prior art date
Application number
PCT/IB2014/063794
Other languages
French (fr)
Inventor
Carsten KAUSCH
Original Assignee
Audi Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi Ag filed Critical Audi Ag
Priority to PCT/IB2014/063794 priority Critical patent/WO2016020728A1/en
Priority to CN201480081039.9A priority patent/CN106662456A/en
Publication of WO2016020728A1 publication Critical patent/WO2016020728A1/en

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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
    • G01C21/3446—Details of route searching algorithms, e.g. Dijkstra, A*, arc-flags, using precalculated routes
    • 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
    • G01C21/3605—Destination input or retrieval
    • G01C21/3614—Destination input or retrieval through interaction with a road map, e.g. selecting a POI icon on a road map

Definitions

  • the invention relates to a method and system for navigating a motor vehicle.
  • the entry of navigation destinations into a navigation system of a motor vehicle can take up relatively much time. Until the actual destination entry has been effected, a driver of the motor vehicle usually stays at rest and only moves off as soon as the destination entry has been effected and a corresponding route to the entered destination has been determined. In particular, in large cities with manifoldly branched road networks and a plurality of possible routes for reaching the destination, the problem can arise that after effected destination entry, the route calculation takes particularly long time, since a plurality of different possible routes first has to be calculated and the most suitable route has to be selected. Thereby, a time of departure can again considerably be extended.
  • US 2009/0210144 Al shows a method for selecting a destination by means of a navigation system. Therein, the actual selection or entry of the destination is stepwise effected. A driver first selects a certain type of destination entry, for example a point of interest or a city. Thereafter, the driver enters a certain location, wherein the search for this location is then only effected within the selected type of destination.
  • a certain type of destination entry for example a point of interest or a city.
  • US 2006/0184323 Al shows a method for providing navigation information for reaching a certain destination. As soon as the vehicle reaches a predetermined zone, different directions of travel are displayed on a screen of the navigation system. The driver can select one of these main directions of travel. As soon as the driver has selected one of these main directions, the navigation system of the vehicle navigates the driver in the selected direction. The driver can therefore obtain navigation information without having to directly enter an exact destination.
  • the method according to the invention for navigating a motor vehicle includes the following steps: displaying a map of a city divided into multiple sectors by means of a display device of the motor vehicle, wherein each of the sectors has at least one road junction on its sector boundary and a pre-calculated route from each road junction to each of the other road junctions is stored in a storage device; as soon as one of the sectors is selected by a preset user action: determining this sector as a destination sector; determining, in which of the sectors the motor vehicle is positioned, based on a detected start position of the motor vehicle and determining this sector as a start sector; determining a route from the start position to the road junction of the start sector; selecting those pre-calculated routes connecting the road junction disposed in the start sector to the road junction of the destination sector depending on a preset criterion; navigating the motor vehicle from the start position along the determined route to the road junction of the start sector and from there along the selected pre-calculated routes to the road junction of the destination sector.
  • a constructional installation is to be understood by a road junction, which serves for linking roads or paths. Therein, it can be both at-grade and grade-separated junctions.
  • An at-grade junction is an intersection or branch of roads at the same level. This form is characterized in that traffic flows cross each other or traffic flows join. The most known form is the road intersection. A grade- separated junction is an intersection or branch at different levels. The most known forms are highway junctions and three-leg highway interchanges. Partially at-grade junctions guide two traffic paths at different levels one above the other, but are each connected to an at-level branch. Partially grade-separated junctions have one of the roads level-free in flowing traffic, the other has a level compensation. The most known form is the highway junction. The roundabout can also be regarded as a special form since it has a level that traffic flows do not directly cross each other.
  • Respective sector boundaries of the sectors are formed at least by a main traffic road of the map.
  • the main traffic roads are characterized in that they have a preset traffic intensity, thus a certain vehicle throughput per time unit, and/or are traveled at least with a preset average speed, in particular with 20 to 40 kilometers per hour.
  • the central idea of the invention is in that a map constructed as simple as possible is provided to a driver of the motor vehicle or also to a passenger in the motor vehicle, by means of which he can start the navigation of the motor vehicle. According to the invention, this is achieved in that the map is divided into a plurality of sectors adjoining to each other. By a preset user action, the driver of the motor vehicle can determine one of the displayed sectors as the destination sector. In that routes connecting the sectors, more exactly the road junctions of the sectors, are respectively already pre-calculated and stored, the required duration for route calculation can be considerably reduced. Only a segment of the route from the current position of the motor vehicle to the road junction of the start sector really has to be calculated. The entire remaining route can be composed according to the already stored routes such that the driver of the motor vehicle can preset a coarse destination direction by selection of one of the sectors in particularly simple manner on the one hand and can obtain a completed calculated route in particularly fast manner on the other hand.
  • An advantageous embodiment of the invention provides that the display device is formed touch-sensitive and one of the sectors is determined as the destination sector if the display device is touched by a user at a location where the concerned sector is displayed, or an area of the display device is encircled by the user, within which the concerned sector is displayed. Thereby, a user can determine the destination sector in a particularly simple manner.
  • the entire city area is displayed, which is divided into the sectors.
  • the number and size of the sectors are selected such that a user can still select one of the sectors as the destination sector by touching the display device formed touch-sensitive in simple manner.
  • the concerned sector is only determined as the destination sector if the touch has been effected shorter than for a predetermined duration, wherein with a touch effected at least for the predetermined duration, a prompt to effect a destination entry deviating from the selection of the sectors is output.
  • the latter preferably means that the user is prompted to specify a specific address or for example a specific point of interest.
  • a user can change in particularly simple manner between the two different entry modes for navigating the motor vehicle, namely the fast calculation of a route to a coarse destination, namely one of the sectors, on the one hand by only shortly touching the display device, or by longer touch, whereby it is changed to the second mode, in which the user is prompted to effect a specific destination entry.
  • a haptically detectable feedback is output by means of the display device, as soon as the touch has been effected for at least the preset duration. Thereby, the user again gets an improved feedback, in which one of the respective selection modes he currently is.
  • a further advantageous embodiment of the invention provides that one of the sectors is determined as the destination sector if a predetermined voice command of the user has been detected.
  • the respective sectors are provided with different numbers displayed on the display device such that the user only has to speak a navigation command, for example such as "navigate to sector 2" to effect a fast start of the navigation and a particularly fast route determination to the concerned sector.
  • the destination sector is optically highlighted as soon as it has been determined. Thereby, the user can recognize in simple manner, to which of the sectors he is now navigated.
  • an acoustic feedback is output as soon as the destination sector has been determined. This can be effected alternatively or additionally to the optical highlighting such that the user is additionally or at least in acoustic manner made aware of the effected and detected destination entry of the concerned sector.
  • a further advantageous embodiment of the invention provides that respective numbers of the sectors and/or their sector boundaries are therein partially transparently displayed over map information located behind.
  • the map information can for example include a very conventional map of a city area, wherein boundaries of respective political city areas and their names are for example also displayed. Thus, the user directly sees the link between the respective sectors and the actual - thus political - division of the city area.
  • an optical and/or acoustic prompt to effect a destination entry is output.
  • the user obtains a prompt to preset a more specific navigation destination than the destination sector upon corresponding approach to the destination sector.
  • the user first can be navigated towards the desired destination sector in particularly fast manner and timely obtains a prompt to further specify his destination statements. If he should not do the latter, it can for example be provided that the motor vehicle is automatically navigated into the center of the concerned destination sector.
  • an optical and/or acoustic prompt to effect destination entry is output.
  • the preset period of time can for example correlate with the previously initially calculated route to the destination sector and the duration of the navigation.
  • a further advantageous embodiment of the invention provides that as soon as it is detected based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction of the destination sector or the sector boundary of the destination sector, a section of the map is displayed such that the destination sector is completely displayed and the sectors surrounding the destination sector are only partially displayed.
  • the displayed map section is presented either enlarged or also downscaled during navigation such that the selected destination sector is at least completely displayed. To the driver of the motor vehicle, this considerably facilitates the specification of his destination entry since now he is able to recognize the road network and optionally also corresponding points of interest within the destination sector previously selected by him in sufficiently large manner and thus also in sufficiently good manner.
  • a symbol characterizing the map scale is additionally displayed. Thereby, it is particularly simply apparent to the driver of the motor vehicle, how large the selected destination sector is and which distance he optionally still has to travel to his actual desired destination after entry into the destination sector.
  • a further advantageous embodiment of the invention provides that as soon as an entry of a destination, for example a specific address or a point of interest is detected during navigation of the motor vehicle to the road junction of the destination sector, considering the current position of the motor vehicle, a route to the destination is determined and the motor vehicle is navigated to the destination according to the determined route.
  • the driver can cause the motor vehicle to be navigated to the desired destination at any time during the navigation to the previously selected destination sector by specifying his destination entry.
  • a further advantageous embodiment of the invention provides that the navigation of the motor vehicle is dynamically adapted depending on provided traffic information.
  • this can include car-to-car communication and/or also information of a traffic management system.
  • the composition of the already stored routes can be effected depending on the provided traffic information such that for example inner-city jams or the like are bypassed.
  • the system according to the invention for navigating a motor vehicle includes a display device, a storage device, a navigation device and a control device, wherein the system is designed for performing the method according to the invention or an advantageous embodiment of the method according to the invention.
  • advantageous developments of the method according to the invention are to be regarded as advantageous developments of the system according to the invention, wherein the system according to the invention in particular has means for performing the method steps.
  • Fig. 1 a schematic illustration of a system for navigating a motor vehicle including a display device, a storage device, a navigation device and a control device;
  • Fig. 2 a schematic illustration of a map of a city divided into multiple sectors, which is displayed by means of the display device;
  • Fig. 3 an enlarged illustration of the map, wherein only one of the sectors is completely displayed.
  • a system 20 for navigating a motor vehicle is shown in a schematic illustration in Fig. 1.
  • the system 20 includes a display device 22, a storage device 24, a navigation device 26 and a control device 28.
  • the system 20 can for example be a part of a motor vehicle, in which it is installed.
  • a map 30 of a city divided into multiple sectors 1 to 14 is displayed by means of the display device 22.
  • Each of the sectors 1 to 14 has at least one road junction 32 on its sector boundary here not designated in more detail.
  • a pre-calculated route here not drawn from each road junction to each of the other road junctions 32 is stored in the storage device 24.
  • the sectors 1 to 14 are disposed such that the sector 1 is displayed in the center of the map 30, wherein the further sectors 2 to 14 are disposed spirally counterclockwise ascending.
  • an outer area 34 here illustrated shaded is also displayed, which is not further divided into sectors. Therein, the sector boundaries and the road junctions 32 are partially transparently illustrated such that the map 30 located below is visible.
  • this sector is selected as a destination sector.
  • the display device 22 is formed touch-sensitive, thus for example as a touch screen.
  • One of the sectors 1 to 14 is determined as the destination sector if the display device 22 is touched by a user at a location where the concerned sector is displayed, or an area of the display device 22 is encircled by the user, within which the concerned sector is displayed.
  • the concerned sector is only determined as the destination sector if the touch is effected shorter than for a preset duration, for example one second.
  • a prompt is output by the system 20 to effect destination entry deviating from the selection of the sectors 1 to 14.
  • a haptically detectable feedback is output by means of the display device 22 as soon as the touch has been effected for at least the preset duration.
  • one of the sectors 1 to 14 is determined as the destination sector if a predetermined voice command of the user has been detected.
  • the predetermined voice command can be such that the user has to speak "navigate me to sector" in combination with the corresponding number of the desired sector.
  • the concerned sector boundary can be provided with a thicker line and/or the concerned sector can be presented different in color than the remaining sectors.
  • an acoustic feedback is output as soon as the destination sector has been determined.
  • the sector 13 has been selected as the destination sector. In this case, for example an acoustic output "sector 13 selected as destination sector" would be output.
  • a start position 36 of the motor vehicle is determined. Based on the detected start position 36 of the motor vehicle, which is presently in the sector 11, it is determined as the start sector 11. Subsequently, a route from the start position 36 to one of the road junctions 32 of the start sector 11 is determined. Presently, it is recognized that the destination sector 13 is located to the north-east from the start sector 11 such that the concerned road junction 32 is selected, which is already disposed in the correct direction between the start sector 11 and the destination sector 13. Subsequently, a route from the start position 36 to the concerned road junction 32 of the start sector is determined.
  • those pre-calculated routes connecting the road junction 32 disposed in the start sector 11 to the road junction 32 of the destination sector 13 are selected depending on a preset criterion.
  • the user can select between different navigation styles, such as for example a particularly fast, particularly short, particularly ecological or particularly stress-free route.
  • the corresponding already stored routes connecting the different road junctions 32 of the sectors 1 to 14 are selected and composed to an overall route for navigating the motor vehicle from the start sector 11 to the road junction 32 of the destination sector 13.
  • the motor vehicle is navigated from the start position 36 along the determined route to the road junction 32 of the start sector 11 and from there along the selected pre-calculated routes to the road junction 32 of the destination sector 13.
  • the navigation of the motor vehicle is effected in two stages. In the first stage, the driver of the motor vehicle can simply select one of the sectors 1 to 14 such that particularly fast route calculation and corresponding navigation start to the concerned destination sector, presently the destination sector 13, can be effected.
  • the driver of the motor vehicle can correspondingly specify his destination statements in a second stage for example by presetting an exact address or a point of interest.
  • a preset period of time for example five minutes, ten minutes or the like, has elapsed after the beginning of the navigation of the motor vehicle from the start position 36, an optical and/or acoustic prompt is output to effect a specific destination entry extending beyond the selection of the destination sector
  • a symbol 38 characterizing the map scale is displayed.
  • a user can for example put his finger on the symbol 38 and again change the map scale by shifting from the bottom to the top. Further, it is also possible that the user is able to shift the map section to the left and right as well as upwards and downwards by shifting his finger along the display device 22.
  • two different points of interest 40, 42 are displayed, which the user can select as the specific destinations by simply touching. Further, he can also press the buttons labeled with exit and back to completely exit the navigation or for example jump into a menu level.
  • a more specific destination entry - thus for example a specific address or a point of interest - is detected via the selection of one of the sectors 1 to 14, considering the current position of the motor vehicle, a route to the destination is determined and the motor vehicle is navigated to the destination according to the determined route.
  • the driver can change from the first stage of the navigation, in which he is only navigated towards the destination sector 13 based on the previously stored routes, to the second stage of the navigation by specifying his destination entry
  • the navigation of the motor vehicle can be dynamically adapted both during the pure navigation to the destination sector 13 and during the navigation to a specified destination depending on provided traffic information.

Abstract

The invention relates to a method for navigating a motor vehicle including the steps of: displaying a map (32) of a city divided into multiple sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) by means of a display device (22) of the motor vehicle, wherein each of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) has at least one road junction (32) on its sector boundary and a pre-calculated route from each road junction (32) to each of the other road junctions (32) is stored in a storage device (24); as soon as one of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) is selected by a preset user action: determining this sector as a destination sector (13); based on a detected start position (36) of the motor vehicle, determining, in which of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 4) the motor vehicle is positioned, and determining this sector as a start sector (11); determining a route from the start position (36) to the road junction (32) of the start sector (11); selecting those pre-calculated routes connecting the road junction (32) disposed in the start sector (11) to the road junction (32) of the destination sector (13) depending on a preset criterion; navigating the motor vehicle from the start position (36) along the determined route to the road junction (32) of the start sector (11) and from there along the selected pre-calculated routes to the road junction (32) of the destination sector (13). Furthermore, the invention relates to a system (20) for navigating a motor vehicle. (Figure 2 selected as the figure accompanying abstract)

Description

Method and system for navigating a motor vehicle Field of the Invention
The invention relates to a method and system for navigating a motor vehicle.
Background Art
Often, the entry of navigation destinations into a navigation system of a motor vehicle can take up relatively much time. Until the actual destination entry has been effected, a driver of the motor vehicle usually stays at rest and only moves off as soon as the destination entry has been effected and a corresponding route to the entered destination has been determined. In particular, in large cities with manifoldly branched road networks and a plurality of possible routes for reaching the destination, the problem can arise that after effected destination entry, the route calculation takes particularly long time, since a plurality of different possible routes first has to be calculated and the most suitable route has to be selected. Thereby, a time of departure can again considerably be extended.
US 2009/0210144 Al shows a method for selecting a destination by means of a navigation system. Therein, the actual selection or entry of the destination is stepwise effected. A driver first selects a certain type of destination entry, for example a point of interest or a city. Thereafter, the driver enters a certain location, wherein the search for this location is then only effected within the selected type of destination.
US 2006/0184323 Al shows a method for providing navigation information for reaching a certain destination. As soon as the vehicle reaches a predetermined zone, different directions of travel are displayed on a screen of the navigation system. The driver can select one of these main directions of travel. As soon as the driver has selected one of these main directions, the navigation system of the vehicle navigates the driver in the selected direction. The driver can therefore obtain navigation information without having to directly enter an exact destination.
Summary of the Invention
Technical problem to be solved
It is the object of the present invention to allow a particularly simple and fast destination entry as well as a particularly fast route determination for the effected destination entry.
Technical solution
This object is solved by a method for navigating a motor vehicle as well as by a system for navigating a motor vehicle having the features of the independent claims. Advantageous developments with convenient and non-trivial further embodiments of the invention are specified in the dependent claims.
The method according to the invention for navigating a motor vehicle includes the following steps: displaying a map of a city divided into multiple sectors by means of a display device of the motor vehicle, wherein each of the sectors has at least one road junction on its sector boundary and a pre-calculated route from each road junction to each of the other road junctions is stored in a storage device; as soon as one of the sectors is selected by a preset user action: determining this sector as a destination sector; determining, in which of the sectors the motor vehicle is positioned, based on a detected start position of the motor vehicle and determining this sector as a start sector; determining a route from the start position to the road junction of the start sector; selecting those pre-calculated routes connecting the road junction disposed in the start sector to the road junction of the destination sector depending on a preset criterion; navigating the motor vehicle from the start position along the determined route to the road junction of the start sector and from there along the selected pre-calculated routes to the road junction of the destination sector.
Therein, a constructional installation is to be understood by a road junction, which serves for linking roads or paths. Therein, it can be both at-grade and grade-separated junctions. An at-grade junction is an intersection or branch of roads at the same level. This form is characterized in that traffic flows cross each other or traffic flows join. The most known form is the road intersection. A grade- separated junction is an intersection or branch at different levels. The most known forms are highway junctions and three-leg highway interchanges. Partially at-grade junctions guide two traffic paths at different levels one above the other, but are each connected to an at-level branch. Partially grade-separated junctions have one of the roads level-free in flowing traffic, the other has a level compensation. The most known form is the highway junction. The roundabout can also be regarded as a special form since it has a level that traffic flows do not directly cross each other.
Respective sector boundaries of the sectors are formed at least by a main traffic road of the map. Preferably, the main traffic roads are characterized in that they have a preset traffic intensity, thus a certain vehicle throughput per time unit, and/or are traveled at least with a preset average speed, in particular with 20 to 40 kilometers per hour.
The central idea of the invention is in that a map constructed as simple as possible is provided to a driver of the motor vehicle or also to a passenger in the motor vehicle, by means of which he can start the navigation of the motor vehicle. According to the invention, this is achieved in that the map is divided into a plurality of sectors adjoining to each other. By a preset user action, the driver of the motor vehicle can determine one of the displayed sectors as the destination sector. In that routes connecting the sectors, more exactly the road junctions of the sectors, are respectively already pre-calculated and stored, the required duration for route calculation can be considerably reduced. Only a segment of the route from the current position of the motor vehicle to the road junction of the start sector really has to be calculated. The entire remaining route can be composed according to the already stored routes such that the driver of the motor vehicle can preset a coarse destination direction by selection of one of the sectors in particularly simple manner on the one hand and can obtain a completed calculated route in particularly fast manner on the other hand.
An advantageous embodiment of the invention provides that the display device is formed touch-sensitive and one of the sectors is determined as the destination sector if the display device is touched by a user at a location where the concerned sector is displayed, or an area of the display device is encircled by the user, within which the concerned sector is displayed. Thereby, a user can determine the destination sector in a particularly simple manner. Preferably, therein, the entire city area is displayed, which is divided into the sectors. Therein, the number and size of the sectors are selected such that a user can still select one of the sectors as the destination sector by touching the display device formed touch-sensitive in simple manner.
According to a further advantageous embodiment of the invention, it is provided that the concerned sector is only determined as the destination sector if the touch has been effected shorter than for a predetermined duration, wherein with a touch effected at least for the predetermined duration, a prompt to effect a destination entry deviating from the selection of the sectors is output. The latter preferably means that the user is prompted to specify a specific address or for example a specific point of interest. By the preset duration, a user can change in particularly simple manner between the two different entry modes for navigating the motor vehicle, namely the fast calculation of a route to a coarse destination, namely one of the sectors, on the one hand by only shortly touching the display device, or by longer touch, whereby it is changed to the second mode, in which the user is prompted to effect a specific destination entry.
In a further advantageous development of the invention, it is provided that a haptically detectable feedback is output by means of the display device, as soon as the touch has been effected for at least the preset duration. Thereby, the user again gets an improved feedback, in which one of the respective selection modes he currently is. A further advantageous embodiment of the invention provides that one of the sectors is determined as the destination sector if a predetermined voice command of the user has been detected. For example, it can be provided that the respective sectors are provided with different numbers displayed on the display device such that the user only has to speak a navigation command, for example such as "navigate to sector 2" to effect a fast start of the navigation and a particularly fast route determination to the concerned sector.
In a further advantageous development of the invention, it is provided that the destination sector is optically highlighted as soon as it has been determined. Thereby, the user can recognize in simple manner, to which of the sectors he is now navigated.
Moreover, according to a further advantageous embodiment of the invention, it can be provided that an acoustic feedback is output as soon as the destination sector has been determined. This can be effected alternatively or additionally to the optical highlighting such that the user is additionally or at least in acoustic manner made aware of the effected and detected destination entry of the concerned sector.
A further advantageous embodiment of the invention provides that respective numbers of the sectors and/or their sector boundaries are therein partially transparently displayed over map information located behind. The map information can for example include a very conventional map of a city area, wherein boundaries of respective political city areas and their names are for example also displayed. Thus, the user directly sees the link between the respective sectors and the actual - thus political - division of the city area.
In a further advantageous development of the invention, it is provided that as soon as it is detected based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction of the destination sector or the sector boundary of the destination sector, an optical and/or acoustic prompt to effect a destination entry is output. In other words, it can be provided that the user obtains a prompt to preset a more specific navigation destination than the destination sector upon corresponding approach to the destination sector. Thus, the user first can be navigated towards the desired destination sector in particularly fast manner and timely obtains a prompt to further specify his destination statements. If he should not do the latter, it can for example be provided that the motor vehicle is automatically navigated into the center of the concerned destination sector.
According to a further advantageous embodiment of the invention, it is provided that as soon as a preset period of time has elapsed after the beginning of the navigation of the motor vehicle from the start position, an optical and/or acoustic prompt to effect destination entry is output. Therein, the preset period of time can for example correlate with the previously initially calculated route to the destination sector and the duration of the navigation. Thereby too, a driver of the motor vehicle is made aware in time before reaching the destination sector previously selected by him that specification of his destination entry is optionally required to actually reach his desired destination.
A further advantageous embodiment of the invention provides that as soon as it is detected based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction of the destination sector or the sector boundary of the destination sector, a section of the map is displayed such that the destination sector is completely displayed and the sectors surrounding the destination sector are only partially displayed. In other words, the displayed map section is presented either enlarged or also downscaled during navigation such that the selected destination sector is at least completely displayed. To the driver of the motor vehicle, this considerably facilitates the specification of his destination entry since now he is able to recognize the road network and optionally also corresponding points of interest within the destination sector previously selected by him in sufficiently large manner and thus also in sufficiently good manner.
In a further advantageous development of the invention, it is provided that a symbol characterizing the map scale is additionally displayed. Thereby, it is particularly simply apparent to the driver of the motor vehicle, how large the selected destination sector is and which distance he optionally still has to travel to his actual desired destination after entry into the destination sector.
A further advantageous embodiment of the invention provides that as soon as an entry of a destination, for example a specific address or a point of interest is detected during navigation of the motor vehicle to the road junction of the destination sector, considering the current position of the motor vehicle, a route to the destination is determined and the motor vehicle is navigated to the destination according to the determined route. In other words, the driver can cause the motor vehicle to be navigated to the desired destination at any time during the navigation to the previously selected destination sector by specifying his destination entry.
A further advantageous embodiment of the invention provides that the navigation of the motor vehicle is dynamically adapted depending on provided traffic information. For example, this can include car-to-car communication and/or also information of a traffic management system. For example, the composition of the already stored routes can be effected depending on the provided traffic information such that for example inner-city jams or the like are bypassed.
The system according to the invention for navigating a motor vehicle includes a display device, a storage device, a navigation device and a control device, wherein the system is designed for performing the method according to the invention or an advantageous embodiment of the method according to the invention. Therein, advantageous developments of the method according to the invention are to be regarded as advantageous developments of the system according to the invention, wherein the system according to the invention in particular has means for performing the method steps.
Further advantages, features and details of the invention are apparent from the following description of preferred embodiments as well as based on the drawing. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of figures and/or shown in the figures alone are usable not only in the respectively specified combination, but also in other combinations or else alone without departing from the scope of the invention. Brief Description of the Drawings
Below, embodiments of the invention are explained in more detail based on schematic drawings which show in:
Fig. 1 a schematic illustration of a system for navigating a motor vehicle including a display device, a storage device, a navigation device and a control device;
Fig. 2 a schematic illustration of a map of a city divided into multiple sectors, which is displayed by means of the display device; and in
Fig. 3 an enlarged illustration of the map, wherein only one of the sectors is completely displayed.
Detailed Description of Embodiments
In the figures, identical or functionally identical elements are provided with the same reference characters.
A system 20 for navigating a motor vehicle is shown in a schematic illustration in Fig. 1. The system 20 includes a display device 22, a storage device 24, a navigation device 26 and a control device 28. The system 20 can for example be a part of a motor vehicle, in which it is installed.
In Fig. 2, the display device 22 is shown, wherein a map 30 of a city divided into multiple sectors 1 to 14 is displayed by means of the display device 22. Each of the sectors 1 to 14 has at least one road junction 32 on its sector boundary here not designated in more detail. Therein, a pre-calculated route here not drawn from each road junction to each of the other road junctions 32 is stored in the storage device 24. As is apparent, the sectors 1 to 14 are disposed such that the sector 1 is displayed in the center of the map 30, wherein the further sectors 2 to 14 are disposed spirally counterclockwise ascending.
Outside of the sectors 1 to 14, an outer area 34 here illustrated shaded is also displayed, which is not further divided into sectors. Therein, the sector boundaries and the road junctions 32 are partially transparently illustrated such that the map 30 located below is visible.
Below, a method for navigating a motor vehicle is explained in more detail. As soon as one of the sectors 1 to 14 is selected by a preset user action, this sector is selected as a destination sector. Presently, the display device 22 is formed touch-sensitive, thus for example as a touch screen. One of the sectors 1 to 14 is determined as the destination sector if the display device 22 is touched by a user at a location where the concerned sector is displayed, or an area of the display device 22 is encircled by the user, within which the concerned sector is displayed. Therein, the concerned sector is only determined as the destination sector if the touch is effected shorter than for a preset duration, for example one second. If the display device 22 is touched at least for the preset duration, thus for example for one second or longer, a prompt is output by the system 20 to effect destination entry deviating from the selection of the sectors 1 to 14. Therein, a haptically detectable feedback is output by means of the display device 22 as soon as the touch has been effected for at least the preset duration.
Alternatively, it is also possible that one of the sectors 1 to 14 is determined as the destination sector if a predetermined voice command of the user has been detected. For example, the predetermined voice command can be such that the user has to speak "navigate me to sector" in combination with the corresponding number of the desired sector.
As soon as one of the sectors 1 to 14 has been selected as the destination sector, it is optically highlighted. For example, the concerned sector boundary can be provided with a thicker line and/or the concerned sector can be presented different in color than the remaining sectors. Moreover, it can also be provided that an acoustic feedback is output as soon as the destination sector has been determined. For the following further explanations, assume that the sector 13 has been selected as the destination sector. In this case, for example an acoustic output "sector 13 selected as destination sector" would be output.
As soon as the destination sector 13 has been selected, a start position 36 of the motor vehicle is determined. Based on the detected start position 36 of the motor vehicle, which is presently in the sector 11, it is determined as the start sector 11. Subsequently, a route from the start position 36 to one of the road junctions 32 of the start sector 11 is determined. Presently, it is recognized that the destination sector 13 is located to the north-east from the start sector 11 such that the concerned road junction 32 is selected, which is already disposed in the correct direction between the start sector 11 and the destination sector 13. Subsequently, a route from the start position 36 to the concerned road junction 32 of the start sector is determined. Subsequently, those pre-calculated routes connecting the road junction 32 disposed in the start sector 11 to the road junction 32 of the destination sector 13 are selected depending on a preset criterion. For example, the user can select between different navigation styles, such as for example a particularly fast, particularly short, particularly ecological or particularly stress-free route. According to which of the following route criteria he has selected, the corresponding already stored routes connecting the different road junctions 32 of the sectors 1 to 14 are selected and composed to an overall route for navigating the motor vehicle from the start sector 11 to the road junction 32 of the destination sector 13.
Subsequently, the motor vehicle is navigated from the start position 36 along the determined route to the road junction 32 of the start sector 11 and from there along the selected pre-calculated routes to the road junction 32 of the destination sector 13.
As soon as it is detected during navigation of the motor vehicle towards the destination sector 13 based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction 32 of the destination sector 13 or the sector boundary of the destination sector 13, an optical and/or acoustic prompt is output to effect a specific destination entry extending beyond the selection of the destination sector 13. Thus, in other words, the navigation of the motor vehicle is effected in two stages. In the first stage, the driver of the motor vehicle can simply select one of the sectors 1 to 14 such that particularly fast route calculation and corresponding navigation start to the concerned destination sector, presently the destination sector 13, can be effected. Subsequently, the driver of the motor vehicle can correspondingly specify his destination statements in a second stage for example by presetting an exact address or a point of interest. Alternatively, it can also be provided that as soon as a preset period of time, for example five minutes, ten minutes or the like, has elapsed after the beginning of the navigation of the motor vehicle from the start position 36, an optical and/or acoustic prompt is output to effect a specific destination entry extending beyond the selection of the destination sector
13. In both cases it could occur that the driver does not further specify his destination entry. For this case, it is provided that the motor vehicle is automatically navigated into the center of the destination sector 13.
As soon as it is detected during navigation of the motor vehicle towards the destination sector 13, that it is only a preset distance or a preset period of time away from the road junction 32 of the destination sector 13 or from the concerned sector boundary of the destination sector 13, as schematically illustrated in Fig. 3, a section of the map 30 is displayed such that the destination sector 13 is completely displayed and the sectors
14, 7, 6, 5 and 12 adjoining to the destination sector 13 are only partially displayed. Furthermore, a symbol 38 characterizing the map scale is displayed. A user can for example put his finger on the symbol 38 and again change the map scale by shifting from the bottom to the top. Further, it is also possible that the user is able to shift the map section to the left and right as well as upwards and downwards by shifting his finger along the display device 22. Presently, furthermore, two different points of interest 40, 42 are displayed, which the user can select as the specific destinations by simply touching. Further, he can also press the buttons labeled with exit and back to completely exit the navigation or for example jump into a menu level.
Furthermore, it is provided that as soon as during navigation of the motor vehicle to the destination sector 13 a more specific destination entry - thus for example a specific address or a point of interest - is detected via the selection of one of the sectors 1 to 14, considering the current position of the motor vehicle, a route to the destination is determined and the motor vehicle is navigated to the destination according to the determined route.
Thus, the driver can change from the first stage of the navigation, in which he is only navigated towards the destination sector 13 based on the previously stored routes, to the second stage of the navigation by specifying his destination entry Therein, the navigation of the motor vehicle can be dynamically adapted both during the pure navigation to the destination sector 13 and during the navigation to a specified destination depending on provided traffic information.

Claims

What is claimed is:
1. Method for navigating a motor vehicle including the steps of:
displaying a map (32) of a city divided into multiple sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) by means of a display device (22) of the motor vehicle, wherein each of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) has at least one road junction (32) on its sector boundary and from each road junction (32) to each of the other road junctions (32) a pre-calculated route is stored in a storage device (24);
as soon as one of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) is selected by a preset user action: determining this sector as a destination sector (13);
- based on a detected start position (36) of the motor vehicle, determining, in which of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) the motor vehicle is positioned, and determining this sector as a start sector (11);
determining a route from the start position (36) to the road junction (32) of the start sector (11);
selecting those pre-calculated routes connecting the road junction (32) disposed in the start sector (11) to the road junction (32) of the destination sector (13) depending on a preset criterion;
navigating the motor vehicle from the start position (36) along the determined route to the road junction (32) of the start sector (11) and from there along the selected pre-calculated routes to the road junction (32) to the destination sector (13).
2. Method according to claim 1,
characterized in that the display device (22) is formed touch-sensitive and one of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) is determined as the destination sector (13) if the display device (22) is touched by a user at a location, where the concerned sector is displayed, or an area of the display device (22) is encircled by the user, within which the concerned sector is displayed.
3. Method according to claim 2,
characterized in that
the concerned sector is only determined as the destination sector (13) if the touch has been effected shorter than for a preset duration, wherein with a touch effected at least for the preset duration, a prompt is output to effect destination entry deviating from the selection of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14).
4. Method according to claim 3,
characterized in that
a haptically detectable feedback is output by means of the display device (22) as soon as the touch has been effected for at least the preset duration.
5. Method according to any one of the preceding claims,
characterized in that
one of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) is determined as the destination sector (13) if a predetermined voice command of the user has been detected.
6. Method according to any one of the preceding claims,
characterized in that
the destination sector (13) is optically highlighted as soon as it has been determined.
7. Method according to any one of the preceding claims, characterized in that
an acoustic feedback is output as soon as the destination sector (13) has been determined.
8. Method according to any one of the preceding claims,
characterized in that
respective numbers of the sectors (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) and/or their sector boundaries are displayed partially transparent over map information located behind.
9. Method according to any one of the preceding claims,
characterized in that
as soon as it is detected based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction (32) of the destination sector (13) or the sector boundary of the destination sector (13), an optical and/or acoustic prompt to effect destination entry is output.
10. Method according to any one of claims 1 to 8,
characterized in that
as soon as a preset period of time has elapsed after beginning of the navigation of the motor vehicle from the start position (36), an optical and/or acoustic prompt to effect destination entry is output.
11. Method according to any one of the preceding claims,
characterized in that
as soon as it is detected based on the current position of the motor vehicle that it is only a preset distance or a preset period of time away from the road junction (32) of the destination sector (13) or the sector boundary of the destination sector (13), a section of the map (30) is displayed such that the destination sector (13) is completely displayed and the sectors (5, 6, 7, 12, 14) surrounding the destination sector (13) are only partially displayed.
12. Method according to claim 11,
characterized in that
a symbol (38) characterizing the map scale is additionally displayed.
13. Method according to any one of the preceding claims,
characterized in that
as soon as entry of a destination is detected during the navigation of the motor vehicle to the road junction (32) of the destination sector (13), considering the current position of the motor vehicle, a route to the destination is determined and the motor vehicle is navigated to the destination according to the determined route.
14. Method according to any one of the preceding claims,
characterized in that
the navigation of the motor vehicle is dynamically adapted depending on provided traffic information.
15. System (20) for navigating a motor vehicle including a display device (22), a storage device (24), a navigation device (26) and a control de-vice (28), wherein the system (20) is designed for performing a method according to any one of the preceding claims.
PCT/IB2014/063794 2014-08-08 2014-08-08 Method and system for navigating a motor vehicle WO2016020728A1 (en)

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Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0790486A2 (en) * 1996-02-08 1997-08-20 Mitsubishi Denki Kabushiki Kaisha Vehicle route searching apparatus
US20060184323A1 (en) 2005-02-14 2006-08-17 Samsung Electronics Co., Ltd. Method for providing route guidance to a destination to which a vehicle is driven
US20090210144A1 (en) 2006-10-31 2009-08-20 Andreas Jungk Method for selecting a destination
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