The input method of crossing banning of turning movement sign in the automated navigation system
Technical field:
The present invention is the input method of banning of turning movement sign in crossing in the automated navigation system.In relating in the navigation data production about the input that turns to traffic rules and the method for operating of modification.
Background technology
Along with the development of society, it is flourishing that quick automobile market of growing up has stimulated GPS navigation market to follow.GPS begins to come into people's life, and the GPS navigation system has had remarkable terminal hardware of performance and perfectly navigation map software collocation.Whether GPS navigation software and map enrich, and depend on the input of each producer on the one hand, also depend on the demand in the market of product on the other hand.GPS is soft, the hardware perfect adaptation, has promoted the popularization in the utilization.A large amount of being adopted at present by medium-to-high grade automobile, and become indispensable " driver's assistant " gradually.Particularly enter unfamiliar when zone as the user, especially those developing city and areas, the GPS navigation system is playing an important role.
Urban road is in continuous variation just, makes the database in our the GPS navigation system be faced with regular modification.The banning of turning movement traffic rules are important navigation datas, be recorded in and turn on the junction node, writing down in the sign description field of junction node junction node code ID, advance limit inLink, go out limit outLink, be illustrated on this junction node, can not redirect to out the limit from entering the limit; Referring to the Fig. 1 in the description of drawings, represented is on the crossing point of node ID=45546202418, can not redirect to the limit of LinkID=45546202502 from the limit of LinkID=45546201168.This shows, the recording method of this banning of turning movement rule and relevant sign code ID close association, this just requires in the navigation data in a zone, must all distribute unique relevant sign code ID for every section road with each road junction in advance, and the ID of every section road to remain in editing process from now on constant.Because in the navigation data production run, we can not determine to have what section roads in advance in the navigation data in a zone, more can't determine can increase or delete what section roads along with the development and change of this area road construction.When intersecting when one section new road of every increase and original section road intersect, can increase a new crossing point so on original section road, road originally also can be divided into two, newly-increased crossing point and two sections of being divided into two all need to redistribute the ID code; When one section road of deletion also similar problem can appear.Which kind of no matter under the situation, when the import or export ID of the banning of turning movement rule that is write down changes, all need this record is carried out edit-modify again.And this phenomenon meeting ubiquity in the navigation data production run, frequent modification banning of turning movement regular record is not only made mistakes easily, and has increased the workload of data edition, thereby has influence on quality and efficient that data are produced.
Summary of the invention
The input method that the purpose of this invention is to provide banning of turning movement sign in crossing in a kind of automated navigation system, use the banning of turning movement identification record of a certain junction node of this method generation, only relevant with the inlet highway section in the counterclockwise serial number of junction node target with authentication code, the junction node target authentication code in outlet highway section.
The concrete method that adopts of the present invention is to realize that by means of computor-keyboard said input method is finished by following steps under the support of GPS navigation software and electronic chart:
1. at a selected crossing cr that road inLink working direction is reached, each road junction that links to each other with this crossing point is numbered according to order commentaries on classics the carrying out 0-N flowing water that is rotated counterclockwise,
2. a N bit be set be the limited code that turns to that enters behind this road Link along cr place, crossing that working direction reached, the figure place of this binary number is corresponding to the flowing water numbering (1-N) at the target crossing that will change over to, it is 1 that the numerical value of this position when changing over to is limit at the target crossing, do not limit the numerical value of this position when changing over to is 0
3. with above said binary numeral as turning to regular attribute codes, give the banning of turning movement attribute setting of the nearest shape point P of the crossing cr that is reached apart from this road Link working direction.
The new input method that turns to regular attribute codes depends on the structure at crossing and the relative position and the forbidden rule of entry and exit fully, the content of revising can be resequenced to the crossing that junction node connects by the software program that weaves, according to the position at deletion or newly-increased crossing, successively the value of banning of turning movement rule is upgraded.So just can accomplish to increase or delete the crossing and need not revise the purpose of banning of turning movement regular record.Revise phenomenon meeting ubiquity in the navigation data production run, the elimination of frequent modification banning of turning movement regular record reduces the workload of data edition of knowing clearly, thereby the quality and the efficient that have influence on data production are improved greatly.
Description of drawings
Fig. 1: the recording method example of banning of turning movement traffic rules during existing navigation data is produced.
Fig. 2: change the crossing coding rule over to from anterior approach section and each in the invention.
Further specify below in conjunction with accompanying drawing and the objective of the invention is how to realize:
Embodiment
In order to overcome prior art defective in the crossing banning of turning movement identification record production process in automated navigation system.The input method that the banning of turning movement that relates to is identified redesigns.This method is to realize by means of computor-keyboard under the support of GPS navigation software and electronic chart, it is characterized in that said input method finished by following steps:
1. at a selected crossing cr that road Link working direction is reached, each road junction that links to each other with this crossing point is numbered according to order commentaries on classics the carrying out 0-N flowing water that is rotated counterclockwise,
2. a N bit be set be the limited code that turns to that enters behind this road Link along cr place, crossing that working direction reached, the figure place of this binary number is corresponding to the flowing water numbering (1-N) at the target crossing that will change over to, it is 1 that the numerical value of this position when changing over to is limit at the target crossing, do not limit the numerical value of this position when changing over to is 0
3. with above said binary numeral as turning to regular attribute codes, the banning of turning movement attribute of giving the nearest shape point (P) of the crossing cr that is reached apart from this road inLink working direction is provided with.
More than said N bit be 8 or 16 bits.
According to the banning of turning movement attribute N position binary code values is set, import N the content in the banning of turning movement rule dialog box, the flowing water sequence number of selected road inLink outlet is made as 0, be followed successively by 1-N according to each import sequence number of counter clockwise direction, corresponding with N position binary code values, thus banning of turning movement rule attribute value table formed.
Be rotated counterclockwise from anterior approach section Link exit point with reference to Fig. 2 and claim flowing water numbering inlet point with this crossing all cross streets of cr; The utilization nearest shape point P of highway section Link middle distance exit point that advances can add such point, as the carrier of banning of turning movement rule attribute record.From the flowing water numbering on this banning of turning movement limit, the banning of turning movement rule attribute of this P also can be more by binary 8 or 16 figure places, mainly are to be decided by the number in the highway section that links to each other with this crossing point.Each can be put 0 or 1,0 expression and not deposit the banning of turning movement rule, and there is the banning of turning movement rule in 1 expression.When representing to forbid when inLink redirect to some outLink limit, the flowing water on this outLink limit can be encoded as index, section banning of turning movement of going up a shape point P nearest apart from a crossing point rule property index place value is seen on the inLink road be changed to 1, expression is forbidden redirecting to the limit that flowing water is numbered index value from the inLink highway section.Deleted or when this crossing point increases a limit when certain the bar limit that links to each other with this crossing point like this, can utilize software to be sorted in the limit that this point connects, and according to the deletion or the position on newly-increased limit, the value of the banning of turning movement rule that each limit is write down is upgraded successively.So just can accomplish to increase or delete the limit and do not revise the purpose of banning of turning movement regular record, thereby reach the irrelevant purpose of ID sign indicating number in regular record and outLink highway section, inLink highway section.