CN102956137A - Method and device for displaying real-time road conditions - Google Patents
Method and device for displaying real-time road conditions Download PDFInfo
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- CN102956137A CN102956137A CN201110247536XA CN201110247536A CN102956137A CN 102956137 A CN102956137 A CN 102956137A CN 201110247536X A CN201110247536X A CN 201110247536XA CN 201110247536 A CN201110247536 A CN 201110247536A CN 102956137 A CN102956137 A CN 102956137A
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- track
- initial trace
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Abstract
The invention provides a method and a device for displaying real-time road conditions. The method includes: acquiring an original track of a road in double direction; calculating an uplink track and a downlink track according to the original track; and displaying information about an uplink road and a downlink road on the uplink track and the downlink track, wherein the uplink track and the downlink track are parallel to the original track and are mutually symmetric relative to the original track. The displaying of information about road conditions in double directions can be realized by the simple method, and recognition effect of an user can be improved.
Description
Technical field
The present invention relates to Map Display Technology, relate in particular to a kind of display packing and device of real-time road.
Background technology
In the process of making electronic chart, have the two-way road of isolation strip or double amber lines for the centre in the reality, tend to be digitized into the highway section of two parallel one-way trips (respectively along two different directions); And do not have the road of isolation strip or double amber lines for the centre, then be digitized into a two-way transitable highway section.
For the road of an opposing traffic, if do not carry out special processing, the then simultaneously congestion on two different directions of Explicit Expression, i.e. traffic information.And be digitized into the road in two highway sections of both direction, in the situation that contraction scale, be presented at and then can occur overlap problem on the map, can cause too can't differentiating uplink and downlink both direction road conditions problem.
The patent No. is the display packing that the Chinese patent of ZL200610149863.0 discloses a kind of real-time road condition information, mainly be according to direction of traffic and default coordinate offset value the display position of traffic information to be adjusted, namely a two-way road can generate two parallel unidirectional highway sections, and then carries out the demonstration of traffic information.But the method is comparatively complicated, and user's recognition effect is relatively poor.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of display packing and device of real-time road, realizes the demonstration of two-way traffic information with better simply method, and can improve user's recognition effect.
For solving the problems of the technologies described above, the invention provides a kind of display packing of real-time road, comprising:
Obtain the initial trace of two-way road;
Calculate up track and descending track according to described initial trace, described up track is parallel with described initial trace with descending track, and the two is symmetrical with respect to described initial trace;
On described up track and descending track, show respectively up traffic information and descending traffic information.
Alternatively, calculate up track according to described initial trace and descending track comprises: with the initial trace of described two-way road respectively to its both sides translation default bias value, to obtain described up track and descending track.
Alternatively, described default bias value is that value according to current engineer's scale dynamically arranges.
Alternatively, the initial trace with described two-way road comprises to its both sides translation default bias value respectively:
Set up coordinate system, wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction;
Determine the coordinate of each point in the described initial trace, be designated as (x
0, y
0);
Determine the angle of described initial trace and due east direction, be designated as α, described default bias value is designated as d;
Calculate the coordinate (x of each point in the described up track according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the described descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
The present invention also provides a kind of display device of real-time road, comprising:
The track acquiring unit is for the initial trace of obtaining two-way road;
The track computing unit is used for calculating up track and descending track according to described initial trace, and described up track is parallel with described initial trace with descending track, and the two is symmetrical with respect to described initial trace;
The road conditions display unit is used for showing respectively up traffic information and descending traffic information on described up track and descending track.
Alternatively, described track computing unit with the initial trace of described two-way road respectively to its both sides translation default bias value, to obtain described up track and descending track.
Alternatively, described track computing unit comprises and dynamically arranges module, is used for dynamically arranging described default bias value according to the value of current engineer's scale.
Alternatively, described track computing unit comprises:
The establishment of coordinate system module is used for setting up coordinate system, and wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction;
The initial trace determination module, the coordinate for determining described initial trace each point is designated as (x
0, y
0);
The calculating parameter determination module, the angle for determining described initial trace and due east direction is designated as α, obtains described default bias value from the described module that dynamically arranges, and is designated as d;
The coordinate Calculation module is for the coordinate (x that calculates described up track each point according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the described descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
Compared with prior art, the present invention has the following advantages:
In the display packing of the real-time road of the embodiment of the invention and the device, calculate up track and descending track according to the initial trace of two-way road, and on up track and descending track, show respectively up traffic information and descending traffic information, wherein, up track is parallel with initial trace with descending track, and the two is symmetrical with respect to initial trace.Because up track and descending track are symmetrical about the initial trace of two-way road in the present embodiment, can make the easier traffic information that will be presented on up track and the descending track of user be identified as traffic information corresponding to this two-way road.
Further, in the display packing of the real-time road of the embodiment of the invention and the device, with the initial trace of two-way road respectively to its both sides translation default bias value, thereby obtain up track and descending track, this default bias value can be according to the map that current engineer's scale value dynamically arranges, thereby so that the demonstration of traffic information is more clear, avoid overlapped interference.
Description of drawings
Fig. 1 is the schematic flow sheet of display packing of the real-time road of the embodiment of the invention;
Fig. 2 is the structural representation of display device of the real-time road of the embodiment of the invention;
Fig. 3 is the display packing of enforcement road conditions of the embodiment of the invention and the execution result schematic diagram of device.
Embodiment
In the electronic chart of prior art, the display packing of the traffic information of two-way road is comparatively complicated, and the not strict restriction of the mutual alignment in two highway sections that split out relation, so that the user is difficult it is identified as the traffic information of original two-way road.
In the display packing of the real-time road of the embodiment of the invention and the device, calculate up track and descending track according to the initial trace of two-way road, and on up track and descending track, show respectively up traffic information and descending traffic information, wherein, up track is parallel with initial trace with descending track, and the two is symmetrical with respect to initial trace.Because up track and descending track are symmetrical about the initial trace of two-way road in the present embodiment, can make the easier traffic information that will be presented on up track and the descending track of user be identified as the traffic information of this two-way road.
Further, in the display packing of the real-time road of the embodiment of the invention and the device, with the initial trace of two-way road respectively to its both sides translation default bias value, thereby obtain up track and descending track, this default bias value can be according to the map that current engineer's scale value dynamically arranges, thereby so that the demonstration of traffic information is more clear, avoid overlapped interference.
The invention will be further described below in conjunction with specific embodiments and the drawings, but should not limit protection scope of the present invention with this.
Fig. 1 shows the schematic flow sheet of display packing of the real-time road of the present embodiment, comprising:
Step S11 obtains the initial trace of two-way road;
Step S12 calculates up track and descending track according to described initial trace, and described up track is parallel with described initial trace with descending track, and the two is symmetrical with respect to described initial trace;
Step S13 shows respectively up traffic information and descending traffic information on described up track and descending track.
Concrete, in step S11, after can reading from map file in procedure for displaying, the initial trace of two-way road obtains.
In step S12, the computation process of up track and descending track specifically can comprise: with the initial trace of above-mentioned two-way road respectively to its both sides translation one default bias value, thereby obtain the uplink and downlink track.Obtain because up track and descending track are translations, and the distance of translation equates, thereby the two is all parallel with initial trace, and up track and descending track are symmetrical with respect to initial trace.Because up track and descending track are symmetrical about initial trace in the present embodiment, so that the user is easy to the initial trace of the two and two-way road is mapped, namely can will be presented at comparatively intuitively the traffic information that traffic information on up track and the descending track is identified as actual two-way road, improve user's recognition effect.
As a nonrestrictive example, in the present embodiment, the concrete computation process of up track and descending track comprises: set up coordinate system, wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction; Determine the coordinate of each point in the described initial trace, be designated as (x
0, y
0); Determine the angle of described initial trace and due east direction, be designated as α, described default bias value is designated as d; Calculate the coordinate (x of each point in the described up track according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the described descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
Preferably, above-mentioned default bias value is that the value according to current engineer's scale dynamically arranges, for example, the larger default bias value of engineer's scale is also just larger, thereby under different engineer's scales, can not overlap with descending track so that make up the up track that calculates, so that the user can clearly identify up traffic information and descending traffic information.
Among the step S13, show up traffic information at up track, show descending traffic information at descending track, in the concrete procedure for displaying, can only on the position of up track and descending track, show respectively the uplink and downlink traffic information, do not show up track and descending track, do not show initial trace yet; Also can show simultaneously up track and descending track, and on track, demonstrate respectively up traffic information and descending traffic information, and initial trace can show also and can not show.Wherein, up traffic information and descending traffic information refer to respectively the vehicle traffic information of advancing along the highway section of both direction.
Fig. 2 shows the structured flowchart of display device of the real-time road of the present embodiment, comprising: track acquiring unit 21 is used for obtaining the initial trace of two-way road; Track computing unit 22 is used for calculating up track and descending track according to initial trace, and this up track is parallel with initial trace with descending track, and the two is symmetrical with respect to initial trace; Road conditions display unit 23 is used for showing respectively up traffic information and descending traffic information on described up track and descending track.Wherein, track computing unit 22 mainly is that initial trace with two-way road is respectively to its both sides translation default bias value, to obtain corresponding up track and descending track.
In the present embodiment, track computing unit 22 further comprises: dynamically arrange module 225, be used for dynamically arranging the default bias value according to the value of current engineer's scale; Establishment of coordinate system module 221 is used for setting up coordinate system, and wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction; Initial trace determination module 222, the coordinate for determining the initial trace each point is designated as (x
0, y
0); Calculating parameter determination module 223, the angle for determining initial trace and due east direction is designated as α, and obtains the default bias value from dynamically arranging module, is designated as d; Coordinate Calculation module 224 is for the coordinate (x that calculates up track each point according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
The course of work about the display device of the enforcement road conditions of the present embodiment can be further with reference to the specific descriptions of implementing the display packing of road conditions in above-described embodiment.
Fig. 3 shows the display packing of enforcement road conditions of the present embodiment and the execution result schematic diagram of device, as shown in Figure 3, the model coordinate system is as a nonrestrictive example, be x axle positive dirction towards the due east direction setting, be set as y axle positive dirction towards direct north; Obtain afterwards the initial trace A of two-way road
0B
0, and in the coordinate system of setting up, determine the wherein coordinate (x of each point
0, y
0); Next determine initial trace A
0B
0With angle α and the default bias value d of x axle (being the due east direction), this default bias value d can be the value dynamic setting according to the engineer's scale of current demonstration; Calculate at last up track A
1B
1In the coordinate of each point, and descending track A
2B
2In the coordinate of each point, wherein, up track A
1B
1Coordinate (the x of middle each point
1, y
1) computing formula as follows: x
1=x
0+ d*sin α, y
1=y
0-d*sin α, descending track A
2B
2Coordinate (the x of middle each point
2, y
2) computing formula as follows: x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
Need to prove, the track of road describes as an example of straight line example among Fig. 3, but one skilled in the art will appreciate that the technical scheme of the present embodiment goes for the shape of other different kinds of roads tracks.
Although the present invention with preferred embodiment openly as above; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (8)
1. the display packing of a real-time road is characterized in that, comprising:
Obtain the initial trace of two-way road;
Calculate up track and descending track according to described initial trace, described up track is parallel with described initial trace with descending track, and the two is symmetrical with respect to described initial trace;
On described up track and descending track, show respectively up traffic information and descending traffic information.
2. the display packing of real-time road according to claim 1, it is characterized in that, calculate up track and descending track comprises according to described initial trace: with the initial trace of described two-way road respectively to its both sides translation default bias value, to obtain described up track and descending track.
3. the display packing of real-time road according to claim 2 is characterized in that, described default bias value is that the value according to current engineer's scale dynamically arranges.
4. the display packing of real-time road according to claim 2 is characterized in that, the initial trace of described two-way road is comprised to its both sides translation default bias value respectively:
Set up coordinate system, wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction;
Determine the coordinate of each point in the described initial trace, be designated as (x
0, y
0);
Determine the angle of described initial trace and due east direction, be designated as α, described default bias value is designated as d;
Calculate the coordinate (x of each point in the described up track according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the described descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
5. the display device of a real-time road is characterized in that, comprising:
The track acquiring unit is for the initial trace of obtaining two-way road;
The track computing unit is used for calculating up track and descending track according to described initial trace, and described up track is parallel with described initial trace with descending track, and the two is symmetrical with respect to described initial trace;
The road conditions display unit is used for showing respectively up traffic information and descending traffic information on described up track and descending track.
6. the display device of real-time road according to claim 5 is characterized in that, described track computing unit with the initial trace of described two-way road respectively to its both sides translation default bias value, to obtain described up track and descending track.
7. the display device of real-time road according to claim 6 is characterized in that, described track computing unit comprises and dynamically arranges module, is used for dynamically arranging described default bias value according to the value of current engineer's scale.
8. the display device of real-time road according to claim 7 is characterized in that, described track computing unit comprises:
The establishment of coordinate system module is used for setting up coordinate system, and wherein the direction towards due east is x axle positive dirction, and the direction towards positive north is y axle positive dirction;
The initial trace determination module, the coordinate for determining described initial trace each point is designated as (x
0, y
0);
The calculating parameter determination module, the angle for determining described initial trace and due east direction is designated as α, obtains described default bias value from the described module that dynamically arranges, and is designated as d;
The coordinate Calculation module is for the coordinate (x that calculates described up track each point according to following formula
1, y
1): x
1=x
0+ d*sin α, y
1=y
0-d*sin α calculates the coordinate (x of each point in the described descending track according to following formula
2, y
2): x
2=x
0-d*sin α, y
2=y
0+ d*sin α.
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|---|---|---|---|
| CN201110247536XA CN102956137A (en) | 2011-08-25 | 2011-08-25 | Method and device for displaying real-time road conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247536XA CN102956137A (en) | 2011-08-25 | 2011-08-25 | Method and device for displaying real-time road conditions |
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| CN201110247536XA Pending CN102956137A (en) | 2011-08-25 | 2011-08-25 | Method and device for displaying real-time road conditions |
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Application publication date: 20130306 |