Control and navigation method for vehicle

The invention relates to a vehicle and destination guidance system with the preamble of claim 1 mentioned features.

State of the art

For navigation of vehicles are fixed to the vehicle Known navigation systems. These use a vehicle in entrained, required for navigation Maps to the vehicle to a driver of the vehicle definable target conduct. There are all information required for the entire route stored in the vehicle. This has the disadvantage that corresponding to the plurality of different target points accordingly a relatively large territory large storage for navigation information are to be kept. In addition, disadvantageous that a consideration of current, the Route guidance of a vehicle influencing information For example, detours, roadblocks and so on, are not berücksichtigbar.

Furthermore, parent services systems to promote Known navigation information, by means of which one, one from a driver predetermined target points appropriate route to a vehicle-fixed navigation system are transferable. Here, according to the desired Destination of transfer all navigation information. The disadvantage here is that on the one hand a relatively large Amount of information is to be transmitted and on the other, resultant changes during the departure of the route not are more berücksichtigbar.

Under Route is an excerpt from a in the fixed vehicle Navigation system usable digital card understood at least one goal. For guidance must a vehicle on a digital map, that is, the Route . are

In addition, vehicle and destination guidance systems known, the stationary along a guideway arranged have traffic control, by means of which the Traffic control passing vehicles Navigation information eentsprechend a desired are transferable route.

ADVANTAGES OF THE INVENTION

The vehicle and destination guidance system of the invention offers the advantage that relatively simple means a constructed fixed to the vehicle navigation system comprising a Self-location of the vehicle, for example, with GPS includes, and communicating with this services system for a Routing relatively small amounts of information be replaced with a powerful dynamic route guidance, ie, a current Changes during the departure of the route be considered Transfer of navigation information possible is. The fact that the navigation system has an input unit comprises on a destination can be entered, a resultant route of the service system is determined, and the route sections the navigation system to inform the driver Provided, it is advantageously possible, a necessary storage capacity of the vehicle-mounted Navigation system for programming of the interpreted Service System and route segments. By the entire route resulting in sections Transmission of route sections can before reaching the final goal, in a subsequent, resulting still to be traveled route section Changes into account, and the anchorage Navigation system are passed. It can thus dynamic navigation information, which the current location of the vehicle is still relatively far are removed, taken into account for the total route are, on the one hand without the need for storage the vehicle-mounted navigation system and additional Data transmission capacity for communication the vehicle-mounted navigation system with the Service center be availed. Only if the current location of the vehicle in a next leg passes, the then already updated by the service center section of the route transferred to the navigation system of the vehicle.

The vehicle and destination guidance system in the Claim matters referred 9 offers the advantage that immediately before entering the anchorage Navigationsssystem according to a selectable drive target can be loaded with a current route. Thereby, that the navigation system before starting the journey with the service system for communication in connection engageable with corresponding predetermined one Travel destination from the service system the latest, to resulting from the predetermined destination route the Navigation system is dubbed, is advantageous possible all up departure resulting traffic information when determining the driving route be taken into account. The vehicle-mounted navigation system needs one hand, no large memory capacity establishing routes to all possible potential to own driving destinations, since only just the actual destination attributable current route to be dubbed and stored needs. About that , it is thus in the short term until departure, incoming traffic information, for example Road closures, traffic, traffic forecasts and the like, in determining the route account. It is preferred if the navigation system with the service system via a telecommunications service, For example, a wired or contact line telecommunications network, for dubbing can be brought into connection.

In another preferred embodiment of the invention it is provided that in the vehicle-mounted navigation system certain user selectable, for example, recurring Routes can be stored. is before riding via the communication connection with the service system which according to the actual destination Updated corresponding route as an update. hereby It also appears a dynamic that is relatively current traffic information taken into account, Navigation information for the motor vehicle.

Further advantageous embodiments of the invention arising out of the other, in the sub-claims mentioned features.

drawings

The invention is described in embodiments explained in more detail with reference to the accompanying drawings. Show it:<dl tsize="8"><dt>figure 1</dt><dd>a schematic view of a vehicle and destination guidance system in a first embodiment, and</dd><dt>figure 2</dt><dd>a schematic representation of a vehicle and destination guidance system in a second variant.</dd></dl>

Description of Embodiments

In Figure 1 is schematically shows a map 10 is shown, based on the vehicle control according to the invention and Route guidance system will be explained. For example it is assumed that an unillustrated Motor vehicle from a starting point A to a Destination B wants to reach. are at the starting point A the driver of the vehicle at its vehicle-fixed Navigation system, the vehicle target B a. Then the navigation system comes with a service center 12 in a communication link 14th The communication link 14, for example, take place via a mobile radio network. own purpose both the vehicle and the service center a Sending and receiving device. 13

The service system 12 performs the information that ie, said destination B, a computer 17 to, the basis of the computer 17 stored, detailed Map the entire map 10 a optimal route 16 to reach the travel destination B calculated. This Route 16 is on the one hand, the stored map and 10 extra current external traffic information 18, with the the service center 12 is supplied continuously. The Traffic information 18, for example, notes on closed roads, buffer zones, difficult Weather conditions and the like.

Considering the traffic information 18 and the map 10 is the route the vehicle 16 in sections, over the communication link 14 transfer. The individual sections of Route 16, are transmitted to the vehicle, to be set up a pre-established classification of Map 10th The map 10 is for this purpose in certain areas divided, of which here, for example, an area 20, a region 22, a region 24, a region 26, a region 28 and a region are called 30th The Classification of areas 20 to 30 and also the other non-designated areas, for example, according to geographical, administrative organizational Circumstances (counties, cities, Municipalities and so on) or other selectable dates Criteria done. The individual areas 20 to 30 respectively abut transition points 32 to each other. (For the sake of clarity in Figure 1 only a transition point shown 32, it being understood that these between all areas of the map 10 exist.) Advantageously the classification of areas based on drive-specific boundary conditions. For example, a sub-route at a voyage on motorways in the area of ​​highway be and cover a large area limited. at a city trip is the route all the streets and a cover small area.

According to the requirement of the vehicle, which the A starting point B will reach the destination is in the service center 12 is the cheapest for this vehicle Route 16 determines and detects separately and in the service center 12 stored. For example the route runs 16 via the areas 20, 22, 24, 26, 28 and 30. First, the navigation system is of the vehicle, a first portion 34 of Route 16 dubbed the the history of Route 16 in the area assign 20. For this is done, for example, transmission of a detailed digital Card to the navigation system of the vehicle, this refers only to the area 20th Since the navigation system of the vehicle not entire detailed map 10, but only the must collect and cache area 20, is provide a correspondingly low storage capacity. is for the navigation system of the vehicle First, the transition point 32 between the region 20 and 22 defined as an autonomous waypoint. The means receives the driver of the vehicle of this interim destination no knowledge, since he to Destination B wants to reach. For the navigation system of the vehicle, however, is first of all the autonomous Intermediate target at the transition point 32 between the regions 20 and 22, the apparent destination.

The navigation system of the vehicle itself can at different ways the necessary information to pass on to the driver, for example, by displaying a corresponding map on a display, by digital voice notes or other digital or analog instructions for guiding the Vehicle.

About a self-locating of the vehicle recognizes the Services system 12 to an approach of the vehicle the transition point 32 between the regions 20 and 22. Upon reaching the transition point 32 or shortly before reaching the transition point 32 is the navigation system of the vehicle via the receiving and Transmitting means 13 of the next section of the route 16, which runs in the example shown, in the range 22 dubbed. Since the region 20 already left is, can the navigation information pertaining to that to be deleted. Thus, no additional storage capacity needed.

As the light falling on the region 22 of the portion Route 16 until reaching the transition point 32 is dubbed the navigation system, can in the meantime, that is, since starting out at the starting point A received, traffic information 18 processed by the computer 17 and the current in the considered down the still be traversed Route 16 will. In this respect, the internal, the is the first set in the service center 12 Route during the actual shut-down of Change Route 16 without the driver thereof Becomes aware. Upon reaching the transition point 32 between the regions 22 and 24 is carried out analogously Way dubbing the next section Route 16, that is, in this case of the Area 24 falling portion of the service center 12 to the navigation system of the vehicle. These Procedure is continued until the destination B is reached.

Overall, there is the advantage that by the Vehicle and destination guidance system of the invention a division of tasks between the navigation Navigation system of the vehicle and the service center 12 results. The relatively complex calculation Route 16 and its continuous updating, also on site after starting at the starting point A, made by the powerful computer 17 the service center 12. Thus, a dynamic Guidance of the vehicle possible, as current traffic information 18 in establishing or Change the route 16 are berücksichtigbar. The needs autonomous navigation system of the vehicle only reproach low capacities since the route only in sections, explained to the Areas 20 to 30 based, must be saved. The Navigation system detects only autonomous interim targets at the transition points 32 for the driver can not be seen as these for the Reaching the final goal B subordinate.

About a self-locating the vehicles through the service system 12, a deviation of the vehicle from the predetermined route 16 detected so that a to thereby resulting possible change of Route 16 in providing the navigation information immediately can be influenced. Either A message is displayed to the driver that the predetermined, optimum route was abandoned 16, or is internal, that is, to the driver not recognizable, a new route 16 and created the navigation system dubbed. From the change Route 16 resulting changes in subsequent Areas 20 to 30 of the route are first considered internally by the service system 12, as in the to be traveled later areas 20 to 30 is resulting portions of Route 16 until reaching of each transition point 32 the navigation system be handed over.

2 shows a further variant is to Realization of the vehicle control according to the invention and represented route guidance system schematically. Same Parts as in Figure 1 are provided with the same reference numerals provided and not explained again.

According to the above in Figure 2 embodiment it is provided that the autonomous navigation system 35 the vehicle before driving over the communications link 14 with the service center 12 in conjunction occurs. The communication link 14 may in this case, a wired connection, For example, a telephone line, broadband cable be or the like. Moreover, the already to Figure 1 illustrated radio connection to the service center 12 prepared. The navigation system 35 has an interface 36 through which a Communication with the service center 12 is possible. Using an input unit 38 is the service center 12 the destination B notified. This will be of the Computer 17 of the service center 12 the optimal route 16 determined and transferred to the navigation system 35th The navigation system 35 has a storage unit 38, in which the respective directions 16 handed navigation information stored are. Since charging of the route 16 in the memory unit can take place shortly before each ride, are the latest traffic information 18 from the computer 17 berücksichtigbar in planning the optimum route 16th

For practical implementation, either the memory unit 38 of the navigation system 35 portable formed, for example in the form of a floppy disk or recordable CD-ROM or DVD, which for Accumulation of the current Route 16 in corresponding Data processing equipment can be introduced or the navigation system 35 is via the interface 36 directly to the communication link 14 coupled. respectively, since only the current Route 16 in the storage unit 38 is loaded, the memory capacity limited to the minimum necessary be because not all the map 10 (Figure 1) stored with all possible candidate traveling destinations to be needed.

Optionally, provision can be made that the memory unit 38 more, usually as standard routes of the vehicle used routes has saved. Soon By connecting to the service center 12 then takes place before driving each update the Route 16, said the service center available 12 standing current traffic information in 18 the planning of Route 16 are berücksichtigbar. Also here there are the advantages that not all available road network with all sorts save travel destinations in the navigation system 35 is.

Further, a combination of the embodiments discussed possible vehicle and destination guidance system in accordance with FIG. 1 and 2 So can before driving a a chosen destination B corresponding Route 16 via a wired Communication link 14, for example the ISDN, are loaded into the navigation system 35th During the exit of Route 16 from the point A to the destination B is a self-locating of the vehicle the current location of the service center 12 monitors. Only if in the meantime, the ie after loading Route 16, in detail, the route 16 contact areas 20 to 30 due to current Traffic information 18 changes the Route 16 result, carried out a corresponding data exchange and thus correction of Route 16 in the navigation system 35. This is the data exchange during Drive limited to a strictly necessary minimum. The exchange of data refers only to any necessary changes in the route 16th

The invention is limited to course not to the illustrated embodiments. So is possible, for example, instead of a travel destination B before driving several travel destinations, for example, in taking care of customers of a sales representative, or at haulage firms to enter, wherein the service center 12 the optimal route 16 determined the exit of several travel destinations.