DE10146098B4 - Method for detecting and storing supplementary digitized route information and navigation system for this purpose - Google Patents

Abstract

method for collecting and storing supplementary digitized path information with a navigation system with a computing unit (1), with a memory unit (3) for access on digitized route information and with route detection means (4), with the steps

Description

The The invention relates to a method for detecting and storing supplementary digitized route information with a navigation system as well a navigation system with a computing unit, with a memory unit for accessing digitized route information, and with route detection means.

navigation systems are well known based on a digital map precise to a driver Give driving instructions to take him to a previously selected destination respectively. The current position of the vehicle is determined by means of position detection means, detected in particular with positioning systems, Radumdrehungszählern and steering angle measuring means. The route guidance works only if both the starting point and the Destination point contained in the data of the digital map. Otherwise is a navigation only by specifying the compass direction (compass function) and the distance (air gap) to the target feasible. The issue of Driving instructions and additional Information, such as B. Remaining distance and expected time of arrival, is in these cases not possible anymore.

The Problem of the conventional Navigation systems is thus that ability of route guidance through the completeness and timeliness of limited digital card. Moreover, in countries for which the road network has not yet been digitized, the navigation system at best an orientation guide. Also within a digitized road network remain wide areas for a route guidance unattainable as a complete digital recording of the road network also in the future is hardly feasible.

DE 42 30 299 A1 discloses a method for the automatic detection of route data by means of a vehicle navigation system, in which distance and also angle increments over a predetermined observation period since a last waypoint storage are detected and a certain position after the observation period position is always stored as a waypoint when the number of since the last stored position counted path or angle increments exceeds a predetermined value. In order to store a new waypoint, a comparison of the directions of travel of the vehicle in a last stored waypoint and a current vehicle position is thus additionally set down in each case on the absolute number of the determined path or angle increments, that is to say on a distance criterion.

DE 195 25 291 C1 discloses a method for acquiring and storing supplementary digitized route information with a navigation system, with a computing unit, a memory for accessing digitized route information and path detection means, in which continuous, namely at predetermined time intervals and / or according to predetermined covered distances taken positions of a traveled route and be saved as waypoints. Decisive here is only one absolute position, direction of travel angles are not considered here. In order to reduce the data volume of the recorded distance, a first vector train formed by the waypoints is subsequently mapped onto a second vector train, the mapping rule being that the maximum vertical distance of the vectors of the second vector train from the first vector train is less than a predetermined threshold value.

 task The invention therefore was an improved method for detecting and storing supplementary digitized route information with a navigation system as well to create a properly trained navigation system, with the despite an incomplete digital map improved route guidance is possible.

The The object is achieved by a method having the features of the independent patent claim 1 and a navigation system with the features of the independent claim 6th

It Thus, a navigation system is proposed with a learning mode, with the one you want Start-target relationship is conveyed to the navigation system to this supplementary Route information for future To be able to call up rides.

The Calculation and storage of digitized path information takes place by means of vectors. As a vector beginning of a vector, in particular for the first Vector a defined starting position can be set. For the ongoing Vectors of the traveled route is each as a vector beginning preferably the position of the vector end of the preceding vector used.

It is provided to set and save the current vector when the angle of the current vector exceeds a defined maximum angle. For this purpose, a continuous calculation of the angle of the current vector takes place, wherein the angle is defined by the vector beginning and the respectively currently detected position. This criterion ensures, in particular, that branch points are reliably detected. Alternatively or additionally, the angle may also be from a relative Angular position as an angle between the currently detected position and a previously detected on the route position be defined. As a result, current strong angle changes are detected.

During the continuously recording the positions of the traveled route advantageously takes place alternatively or additionally a continuous Calculate the length a current vector from the vector beginning and the current one recorded position. The current vector is then set and saved when the length of the current vector exceeds a defined maximum length. In this way it is ensured that the digitized route information is sufficient is described exactly from a variety of vectors.

Of the In addition, the current vector can then be defined and stored, when a direction indicator is pressed. This turn signal is thus used to subsequently construct a new vector and the point at which the direction indicator was pressed, is stored as a turning point.

The Procedures and the navigation system can also do so added be that capturing and storing way information, such as B. Information about Restricted areas with time, vehicle type, height and / or weight specific Entry and / or passage restrictions be captured and stored.

The Storing the recorded supplementary route information in The storage unit preferably takes place only after reaching a Destination point, so while the ride on the route to be recorded only the route information collected and processed.

The The invention will be explained in more detail with reference to the accompanying drawings. It demonstrate:

1 Block diagram of a navigation system for carrying out the method according to the invention;

2 Flowchart of the so-called scout method for acquiring and storing supplementary digitized path information;

3 - Flowchart of the scout method, wherein the digitized path information is calculated as vectors and stored.

The 1 leaves a conventional navigation system with a central processing unit 1 detect. The arithmetic unit 1 is to an output unit 2 clamped to output a digital map and / or route information optically or acoustically. To calculate a route, the arithmetic unit uses 1 on a storage unit 3 to, in the digitized path information in the form of a digital map are stored. The storage unit 3 can z. B. a CD-ROM or the like.

The current vehicle position is provided with route detection means 4 destined to the arithmetic unit 1 are clamped. The wayfinding means 4 can z. B. a location system (for example, a Global Positioning System (GPS) receiver), Radumdrehungssensoren, steering angle sensor, etc. include.

According to the invention, the arithmetic unit 1 of the navigation system is now configured by suitable programming so that in a learning mode during a journey, the positions of a driven route are continuously recorded. From these positions digitized path information is calculated. This is preferably done by forming vectors, wherein the vector start of the first vector is the defined start position. The vector beginning of the further vectors of the path is then determined by the position of the vector end of the preceding vector.

The 2 allows the implementation of the so-called scout method for detecting and storing additional digitalized path information as a flowchart recognize.

In a first step (a) is the starting position of the recorded Distance traveled by the vehicle.

In a second step (b), after reaching the start position, a so-called scout function or the learning mode in a selection menu from the output unit 2 selected.

In In a third step (c), the position query is conditioned and adapted to the scout procedure.

In In a fourth step (d), GPS data of a GPS positioning system is recorded checked their validity.

In a fifth Step (e) is queried, if possible Additional information has been introduced by the user. This additional information then in a sixth step (f) either general or entered and stored in relation to the current position.

In a seventh step (g) the GPS data stored as position data in a buffer.

The Steps (d) to (g) are carried out continuously until detected in a query (h) the end of the line to be recorded becomes.

Only then is in an eighth step (i) queried whether the supplementary path information should be stored and then optionally in a ninth step (k) in the memory unit ( 3 ) saved.

The 3 shows a flowchart of a method for detecting and storing supplementary path information in the form of vectors.

After starting the scout or learning mode in a first step ( 1 ) takes place in a second step ( 2 ) the initialization of the track to be recorded. Here, the already traveled distance S (0) is set to zero. The start position (starting point POS (0)) is the current position.

Subsequently, will the distance traveled continuously and in vectors converted.

In a query ( 3 ) checks whether the distance traveled or the distance corresponding to the current vector has exceeded a maximum distance s (max) (distance> s (max)). If this is true, in a step ( 6 ) the vector of the travel section i is stored as a vector of the position of the vector end of the preceding vector and the current position (V (i) = Pos (i); Pos (i-1)), where the index i is the number of the route section.

If the route has not yet exceeded the defined maximum distance s (max), a query ( 4 ) checks whether the angle of the vector or the angles of successive positions has exceeded a maximum angle w (max). In this way, a turning of the vehicle on the road is checked. If this is the case, in the above-mentioned step ( 6 ) again the vector stored.

Even though the angle has not exceeded the maximum angle w (max), in a query ( 5 ) checks whether a turn signal has been set. If the direction indicator has been set and there is a turn, in one step ( 7 ) the vector according to the method in step ( 6 ) stored. The vector v (i) is in turn defined by the position of the vector end of the previous vector Pos (i-1) and the current position Pos (i) of the current ith route section.

S(FHS)

Sprachangabe, Fahrhinweis-Start

R

Richtung (Links, Rechts)

D

Distanz (in m)

S(FHE)

Sprachangabe, Fahrhinweis-Ende

S(SW)

Sprachangabe, Spurwechsel

In addition, in step ( 7 ) Attributes {S (FHS), R, D} or {S (FHE), R} or {S (SW), R} are stored. Here the parameters are defined as follows:

S (FHS)

Language information, driving instruction start

R

Direction (Left, Right)

D

Distance (in meters)

S (FHE)

Language, driving instruction end

S (SW)

Language specification, lane change

In a query ( 8th ) continuously checks whether a "Save target" selection item has been selected or a preset target point has been reached. If this is not the case, the queries ( 3 ) 4 ) and ( 5 ) repeated.

However, if in the query ( 8th ) has been determined that the destination is to be stored, is in one step ( 9 ) queried a name for the supplementary route information and the fancy route under this name in the memory unit ( 3 ) and the process in step ( 10 ) completed.

The additionally recorded path information can z. B. with a radio data transmission unit (such z. B. a mobile phone to a central office or to other users) become.

The supplementary But path information can also stored on a floppy disk and forwarded to other users become.

To the Learning a route is thus first of all by a driver who knows the way, the route abfahren. The collected Information is prepared by the navigation system and as supplementary Route information for future Rides saved. Another driver can then without knowledge select the route stored on the route and will then be based on the stored data precisely led to the goal. To problems with one-way streets etc., the learning process needs to be in both directions from a start and finish point and back are carried out, provided the navigation should be in both directions.

The method is versatile. If z. B. the company headquarters or the residence of the vehicle owner is outside the digitized area, a route calculation from the company headquarters or residence is not possible because the route guidance ends on the way home on the edge of the digitized area. Through the learning mode, the residence can now be connected to the nearest area of the digitized network, so that a Route calculation from the front door is possible. By passing on the data to customers or visitors together with an invitation, they can train their navigation system and reach the destination on time and without much detour.

For freight forwarders or sales representative It makes sense to be a frequent Target to be approached outside of the digitized area lies to learn. A new driver or a substitute will then store that goal based on the Data without delays and detours directly.

The Procedure is even within the digitized area itself usable, for. B. a frequently traversed Track to save. This has compared to the usually nowadays storable routes the advantage that the route is optimized neither on track nor on time, still over Intermediate points must be created individually by hand.

Claims (12)

Method for recording and storing supplementary digitized route information with a navigation system having a computer unit ( 1 ), with a memory unit ( 3 ) for accessing digitized path information and with path detection means ( 4 ), with the steps - continuous Recording positions of a driven route, - To calculate digitized path information from the recorded positions, Storing the calculated digitized path information as supplementary path information in the memory unit ( 3 characterized by the steps of - calculating and storing vectors as digital way information, wherein a vector start of a current vector is a start position or the position of the vector end of the previous vector of travel, - continuously calculating the angle of a current vector as an angle between the current vector from the vector beginning and the respectively currently detected position and the last stored vector and / or as an angle between a vector to a previously detected on the route position and the vector of each currently detected position, - setting and storing the current vector when the angle of the current vector exceeds a defined maximum angle. Method according to claim 1, characterized by - continuous Calculate the length a current vector from the vector beginning and the current one captured position, and - Establish and storing the current vector when the length of the current vector exceeds a defined maximum length or - if the Angle of the current vector exceeds a defined maximum angle. A method according to claim 1 or 2, characterized by setting and saving the current vector, if one Direction indicator pressed is. Method according to one of the preceding claims, characterized by detecting and storing way information. Method according to one of the preceding claims, characterized in that the storage of the recorded positions in the memory unit ( 3 ) takes place after reaching a destination point. Navigation system with a computing unit ( 1 ), with a memory unit ( 3 ) for accessing digitized path information, and with path detection means ( 4 ), wherein the navigation system is designed to: - continuously record positions of a traveled route, - to calculate digitized route information from the recorded positions, - to store the calculated digitized route information as supplementary route information in the memory unit ( 3 ), characterized in that the navigation system is further adapted to - calculate and store vectors as digital path information, wherein a vector start of a current vector is a start position or the position of the vector end of the previous vector of the path, - continuously calculating the angle of a current vector as an angle between the current vector from the start of the vector and the respectively currently detected position and the last stored vector and / or as an angle between a vector to a previously detected on the route position and the vector of each currently detected position, - setting and storing the current vector when the angle of the current vector exceeds a defined maximum angle. Navigation system according to claim 6 with a radio data transmission unit, characterized in that the navigation system for transmission the supplementary digital way information about the data transmission unit is trained. Navigation system according to claim 6 or 7, characterized in that the route detection means ( 4 ) have satellite-based location means. Navigation system according to one of claims 6 to 8, characterized in that the navigation system for carrying out the Method according to one of the claims 2 to 5 is formed.