CN103185600B - Navigation system and air navigation aid and device - Google Patents
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Abstract
A kind of navigation system and air navigation aid and device, the air navigation aid include：Guidance path calculation is carried out based on navigation requests to obtain path of navigation；Carried out with the path of navigation in navigation procedure, the distance of detection current location and next motor-driven crossing；The motor-driven crossing refers to the road cross to match with the prompt message in navigation procedure；The corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine per the visual range under one-level displaying ratio in front of the current location；The current displaying ratio of electronic map is adjusted, is adapted the distance of current location and next motor-driven crossing of the visual range with detecting.Technical solution of the present invention can realize the displaying ratio of the adjust automatically electronic map in bootup process, it is ensured that next motor-driven crossing can be properly displayed in the visual range in front of current location all the time.
Description
Technical field
The present invention relates to field of navigation technology, more particularly to a kind of navigation system and air navigation aid and device.
Background technology
With the development of automobile industry, people increasingly pay close attention to user's body when using automobile while automobile is possessed
Test.Existing mobile unit has been able to be supplied to user much to service, including the multimedia requirement such as music, video, picture
Service, and service in terms of the traffic navigation such as real-time road condition information, destination maps etc..Especially onboard navigation system makes
With increasingly popularizing, user can be guided to drive by the voice message of navigation system, especially when traveling is in strange city,
By navigation system user can be helped conveniently and efficiently to arrive at.
Map of navigation electronic (may be simply referred to as electronic map or navigation map), also known as navigation electronic, its
Main contents include using road network as skeleton geographical frame information, the social and economic information that is superimposed on it and static state/
Dynamic information.Navigation system requirement can support map match, path planning, Route guiding, map denotation and related interests
The navigation data of point inquiry.
Because navigation system can only show local electronic map and by navigating with fixed engineer's scale (displaying ratio)
The path of navigation obtained after calculation, and the abundant in content degree shown under different scale also differs, and in navigation procedure
In, different places (such as apart from the difference of crossing distance) is different for the attention rate of information, particularly turns when vehicle drives to
, it is necessary to intuitively be prompted follow-up direct of travel, although generally navigation system before to, the road cross such as fork, Entry to motorway
System can carry out Voice Navigation prompting before above-mentioned road cross is driven to, but on the electronic map not necessarily can be with suitable
Engineer's scale by the feature of above-mentioned road cross and periphery relevant information it is directly perceived, clearly show user, such as in engineer's scale
When smaller, it is difficult to embody the detailed information of road cross.And in traditional navigation system, it is not have in navigation procedure medium scale
Change, if the user desired that change engineer's scale needs oneself manually operated, so on the one hand have impact on user's navigation experience,
On the other hand, in startup procedure, adjustment engineer's scale of diverting one's attention can undoubtedly have undesirable effect to driving safety.
Correlation technique reference may also be made to Publication No. CN 101387521A Chinese patent application, which disclose one kind
The method that navigation map engineer's scale is adjusted according to Vehicle Speed, although it can realize adjust automatically navigation map ratio
Chi, but the size of engineer's scale is influenceed by travel speed, it is impossible to intuitively show the navigation map that user wishes to.
The content of the invention
The problem to be solved in the present invention is to provide a kind of navigation system and air navigation aid and device, realizes in bootup process
The displaying ratio of adjust automatically electronic map, it is ensured that next motor-driven crossing can be properly displayed in front of current location all the time
Visual range in.
To solve the above problems, technical solution of the present invention provides a kind of air navigation aid, including：
Guidance path calculation is carried out based on navigation requests to obtain path of navigation；
Carried out with the path of navigation in navigation procedure, the distance of detection current location and next motor-driven crossing；It is described
Motor-driven crossing refers to the road cross to match with the prompt message in navigation procedure；
The corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine to show per one-level
Visual range under ratio in front of the current location；
The current displaying ratio of electronic map is adjusted, makes the visual range and the current location detected and next machine
The distance at dynamic crossing is adapted.
Optionally, the current location is the current location for matching the path of navigation, the current location with it is next
The distance at individual motor-driven crossing is current location and distance of next motor-driven crossing on the path of navigation.
Optionally, if detecting, current location and the distance at next motor-driven crossing are less than or equal to predetermined threshold value, triggering
Adjustment to the current displaying ratio of electronic map.
Optionally, the current displaying ratio of the adjustment electronic map, makes the visual range and the present bit detected
Putting to be adapted with the distance at next motor-driven crossing includes：The current displaying ratio of electronic map is zoomed in or out step by step, until
The distance of current location and next motor-driven crossing of the visual range with detecting is adapted.
Optionally, the current displaying ratio of the adjustment electronic map, makes the visual range and the present bit detected
Putting to be adapted with the distance at next motor-driven crossing includes：The current displaying ratio of electronic map is arranged to the visual range
The corresponding displaying ratio adaptable with the distance at next motor-driven crossing with the current location detected.
Optionally, the distance of the visual range and the current location and next motor-driven crossing that detect is adapted bag
Include：Next motor-driven crossing is shown in the visual range.
Optionally, the visual range is associated with the dimensions of the display screen of guider.
Optionally, the prompt message in the navigation procedure includes：Voice message, text prompt, picture cues and video
At least one of prompting.
To solve the above problems, technical solution of the present invention also provides a kind of guider, including：
Unit is calculated in path, suitable for carrying out guidance path calculation based on navigation requests to obtain path of navigation；
Detection unit, suitable for being carried out with the path of navigation in navigation procedure, detection current location and next reserve road
The distance of mouth；The motor-driven crossing refers to the road cross to match with the prompt message in navigation procedure；
Visual range determining unit, the displaying ratios at different levels suitable for obtaining electronic map are corresponded to representated by per screen pixels
Distance, to determine per the visual range under one-level displaying ratio in front of the current location；
Adjustment unit, suitable for adjusting the current displaying ratio of electronic map, make the visual range current with detecting
The distance of position and next motor-driven crossing is adapted.
To solve the above problems, technical scheme additionally provides a kind of navigation system including above-mentioned guider
System.
Compared with prior art, technical solution of the present invention has advantages below：
In navigation procedure is carried out with path of navigation, by detecting the distance of current location and next motor-driven crossing, and
The corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine per institute under one-level displaying ratio
State the visual range in front of current location, the current displaying ratio of adjust automatically electronic map, make under current displaying ratio can
Distance depending on current location and next motor-driven crossing of the scope with detecting is adapted, so as to realize in bootup process
The displaying ratio of adjust automatically electronic map, it is ensured that next motor-driven crossing can be properly displayed in front of current location all the time
Visual range in, which thereby enhance navigation efficiency, ensure traffic safety and enhance the navigation experience of user.
Brief description of the drawings
Fig. 1 is the schematic flow sheet for the air navigation aid that embodiment of the present invention provides；
Fig. 2 is the schematic diagram to be navigated in the embodiment of the present invention with path of navigation；
Fig. 3 to Fig. 4 is the schematic diagram for the current displaying ratio for adjusting electronic map；
Fig. 5 is the structural representation of guider provided in an embodiment of the present invention.
Embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Detail is elaborated in the following description in order to fully understand the present invention.But
It is that the present invention can be different from other manner described here to implement with a variety of, those skilled in the art can be without prejudice to originally
Similar popularization is done in the case of invention intension.Therefore the present invention is not limited by following public embodiment.
Fig. 1 is the schematic flow sheet for the air navigation aid that embodiment of the present invention provides.As shown in figure 1, the air navigation aid
Including：
Step S101, guidance path calculation is carried out based on navigation requests to obtain path of navigation；
Step S102, carried out with the path of navigation in navigation procedure, detection current location and next motor-driven crossing
Distance；The motor-driven crossing refers to the road cross to match with the prompt message in navigation procedure；
Step S103, the corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine
Visual range under per one-level displaying ratio in front of the current location；
Step S104, the current displaying ratio of electronic map is adjusted, makes the visual range and the current location detected
It is adapted with the distance at next motor-driven crossing.
Fig. 2 is the schematic diagram to be navigated in the embodiment of the present invention with path of navigation.With reference to Fig. 1 and Fig. 2, with specific
Embodiment elaborates to above-mentioned air navigation aid.
In the present embodiment, implement the air navigation aid by taking onboard navigation system (including on-vehicle navigation apparatus) as an example, at it
In his embodiment, or other guiders, such as possess the mobile phone of navigation feature, multimedia terminal etc..This area
Technical staff knows, in onboard navigation system, generally using existing city map as background, vehicle is then passed through satellite
Information (such as latitude and longitude information residing for vehicle, course information of the vehicle etc.) Overlapping display obtained is positioned in Background (electricity
Sub- map) on.In navigation procedure, because vehicle travels on road all the time, therefore the road in existing electronic map database
Road network data can provide road information, and be shown by the use of other information as background.
Step S101 is first carried out, carries out guidance path calculation based on navigation requests to obtain path of navigation.Specifically, when
Can (or be current by the original position of vehicle when user needs to inquire about traffic route from a position to another position
Position) and final position (or being purpose position) input onboard navigation system, certainly, the current location of vehicle can also lead to
Cross satellite fix (such as global positioning system (GPS, Global Position System)) directly to obtain, it is not necessary to user's hand
Dynamic input.Navigation requests are produced after starting inquiry, please based on the navigation after onboard navigation system receives the navigation requests
Ask (including original position and the information in final position) to carry out guidance path calculation, obtained after calculation from original position to terminal position
The traffic route put, the traffic route are referred to as path of navigation.Navigation system is that the traveling of vehicle is entered with the path of navigation
Row navigation.
It should be noted that the path of navigation more than one, because after onboard navigation system is calculated, is drawn
The scheme of traffic route is not unique, can typically calculate a plurality of traffic route, and finally be presented to user is then phase
To the scheme of optimal traffic route.It is of course also possible to the parameter that imposes a condition according to the actual requirements, for example, running distance it is most short,
Running time is most short, vehicle cost is minimum etc., and for different conditional parameters, the path of navigation drawn may be different, it is also possible to
It is identical.Technology on guidance path calculation is known to those skilled in the art, will not be repeated here.
After obtaining the path of navigation, step S102 is performed, is carried out with the path of navigation in navigation procedure, detection is current
The distance of position and next motor-driven crossing；The motor-driven crossing refers to the road to match with the prompt message in navigation procedure
Crossing.
After obtaining the path of navigation by guidance path calculation, onboard navigation system can be wrapped according to the path of navigation
Information (the predominantly information in each section, including the annexation between section title, road section length, section direction, section contained
Deng) generation guiding interface (or being navigation interface), path of navigation can intuitively, clearly be showed by the guiding interface
User, when it is implemented, the guiding interface is shown by the display screen of on-vehicle navigation apparatus.
Onboard navigation system is carried out in navigation procedure with the path of navigation, in turning, fork, high speed gateway, auxiliary road
The section of the non-close such as gateway or non-straight trip is frequently necessary to the judgement that user carries out travel direction, and onboard navigation system also can be
Prompt message is sent to the direction of traveling before the road cross driven under the above situation, such as most common Voice Navigation carries
Show, certainly, the prompt message in navigation procedure is except that including voice message, can also include text prompt, picture cues, video
Prompting etc..Therefore, the prompt message in navigation procedure is the information match with the road cross under the above situation, the present invention
In embodiment, the road cross to match with the prompt message in navigation procedure is referred to as motor-driven crossing.Can by foregoing description
Know, and not all intersection can be referred to as motor-driven crossing.First, the motor-driven crossing must be located at the path of navigation
On road cross；Second, the motor-driven crossing matches with the prompt message.If it should be noted that guiding road
Certain section of road on footpath is straight trip, and the crossing on this section of straight road is typically not in corresponding prompt message, institute
The motor-driven crossing can not be referred to as with the crossing being usually located on this section of straight road.
The motor-driven crossing is illustrated with reference to Fig. 2.Fig. 2 shows the guiding interface 20 in navigation procedure,
Guide in interface 20, the lower left corner denotes current displaying ratio (engineer's scale 1), and path of navigation, wherein a, b, c points are represented with thick line
It is not in 3 current locations of the vehicle on the path of navigation of different time point user driving, certainly, in actual implementation
When, at some time point, guide the current location of the vehicle on the path of navigation in interface to only exist 1, but in order to represent
Go out the change of current vehicle position, therefore figure 2 illustrates 3 current locations of corresponding 3 different time points.When vehicle row
This position of a is sailed to, the A crossings in front of it are not present and the road due to being the crossing on straight road in the present embodiment
Prompt message corresponding to mouthful, so A crossings are not current location a next motor-driven crossing, and can be obtained from path of navigation
Know, at B crossings, vehicle can turn and westwards travel (bending to right), then corresponds to B crossings and prompt message inherently be present, such as be expert at
Before sailing to B crossings, guider can send the verbal cue of such as " right-hand rotation of how many meters of front ", so B crossings are current
Position a next motor-driven crossing, naturally also current location b next motor-driven crossing.Similarly, when vehicle is right at B crossings
This position of c is driven to after turning, C crossings are current location c next motor-driven crossings.
By the prompt message in navigation procedure be normally based on information that the path of navigation included (section title,
Annexation between road section length, section direction, section etc.) generation, therefore, after prompt message is generated, just it can obtain
Obtain all motor-driven crossings on the path of navigation.
In the present embodiment, the current location is the current location for matching the path of navigation, the current location with
The distance at next motor-driven crossing is current location and distance of next motor-driven crossing on the path of navigation.
Those skilled in the art know that map match is a kind of fixed by software approach and corresponding match circuit, correction
The technology of position (such as GPS location or dead reckoning positioning) error, i.e., the vehicle location or row obtained other localization methods
Track is sailed, compared with the road data in vehicle-mounted electronic map database, is matched, finds the road where vehicle, is calculated
Go out position of the vehicle on road, and then correct position error, it is thus possible to greatly provide the positioning precision of vehicle, it is fixed to reduce
Position error.
When it is implemented, can be by satellite positioning device (such as GPS positioning device) GPS that onboard navigation system has
The vehicle location information of satellite transmission, the vehicle location information include being used for the latitude and longitude coordinates, OK for determining vehicle location
Sail direction (course), the information such as travel speed of vehicle.Car is just can determine based on the latitude and longitude coordinates in vehicle location information
Current location information, but the current location information does not match the path of navigation, therefore, it is also desirable to which vehicle is worked as
Front position is matched on the road of vehicle current driving, that is, is matched on the path of navigation.
In the present embodiment, after current vehicle position is matched into the path of navigation, and then the guiding road can be passed through
Footpath obtains the distance of current location and next motor-driven crossing.As shown in Fig. 2 because B crossings are current location a next machines
Dynamic crossing, the distance between a and B are current location a and the distance at next motor-driven crossing, similarly, the distance between b and B
As current location b and the distance at next motor-driven crossing, the distance between c and C are current location c and next reserve road
The distance of mouth.Some point on path of navigation is may be considered due to current location and next motor-driven crossing, and guides road
Road section length on footpath be, it is known that therefore just can be obtained from the path of navigation current location and next motor-driven crossing away from
From.
, it is necessary to obtain the current location information of vehicle in real time in the present embodiment, and current location is detected with this in real time
The distance at one motor-driven crossing, in subsequent step, according to the distance pair of the current location detected and next motor-driven crossing
The displaying ratio of electronic map is adjusted, it is ensured that next motor-driven crossing can be properly displayed in front of current location all the time
Visual range in, it is therefore desirable to determine the visual range under different displaying ratios.
Step S103 is performed, obtains the corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map,
To determine per the visual range under one-level displaying ratio in front of the current location.
Display for electronic map, generally with a variety of displaying ratios, multiple levels are formed according to the size of displaying ratio
Other engineer's scale.In the case of same map sheet, engineer's scale is bigger, and scope is smaller on the spot for cartographic representation, and content is more detailed, accurately
Degree is higher, and the actual range represented by the distance between pixel shown on the electronic map is smaller, and boundary is guided for showing
Distance representated by every screen pixels of the display screen in face is also smaller；Engineer's scale is smaller, then it represents that actual range it is bigger, content
Simpler, accuracy is lower, and the actual range represented by the distance between pixel shown on the electronic map is bigger, is used for
Distance representated by every screen pixels of the display screen at displaying guiding interface is also bigger.
In the present embodiment, application programming interfaces (API, the Application Program of navigation engine can be passed through
Interface the corresponding distance representated by per screen pixels of engineer's scales at different levels of electronic map) is obtained, for example, in the 1st grade of ratio
Corresponding distance representated by per screen pixels is 100 kilometers under chi, under the 2nd grade of engineer's scale representated by corresponding every screen pixels
Distance is 50 kilometers, and corresponding distance representated by per screen pixels is 10 kilometers under 3rd level engineer's scale ..., with such
Push away, until getting the corresponding distance representated by per screen pixels of all proportions chi.
After getting the corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map, it is possible to this determination
Go out the visual range in front of the current location under every one-level displaying ratio.The visual range refers in some displaying ratio
Under, the front of current vehicle position can be to the scope that user shows on screen.For identical screen size, and vehicle
In the case where the location of screen is relatively uniform, displaying ratio is bigger for current location, the visual range in front of current location
Smaller but shown information is more detailed, conversely, displaying ratio is smaller, the visual range in front of current location is bigger, but shows
The information shown is simpler.
It should be noted that the visual range is also associated with the dimensions of the display screen of guider.Same
Under displaying ratio, the size of the display screen of guider is bigger, and the scope that can be shown is also bigger, in front of current vehicle position
Visual range also can be bigger, conversely, the size of the display screen of guider is smaller, the scope that can be shown also just smaller, car
Visual range in front of current location also can be smaller.
After determining the visual range under every one-level displaying ratio in front of the current location, it just can be based on detecting and work as
Motor-driven crossing can be suitably shown in institute by the Distance Judgment of front position and next motor-driven crossing under which displaying ratio
State in visual range, if motor-driven crossing can not be suitably shown in the visual range by current displaying ratio, need to contract
Small or amplification displaying ratio, i.e., be automatically adjusted to the current displaying ratio of electronic map.
After detecting the distance of current location and next motor-driven crossing and determining the visual range, step is performed
S104, adjust the current displaying ratio of electronic map, make the visual range and the current location that detects with it is next motor-driven
The distance at crossing is adapted.
In the present embodiment, the distance of current location and next motor-driven crossing of the visual range with detecting is adapted
Including：Next motor-driven crossing is shown in the visual range.Certainly, except can be by next reserve road
Mouth is shown in the visual range, it is also necessary to which satisfaction is shown with appropriate displaying ratio.Such as it is ascending successively
In the presence of the 1st rank engineer's scale, the 2nd rank engineer's scale, the other engineer's scale of 3rd level, if current displaying ratio is the other engineer's scale of 3rd level,
And under the other engineer's scale of 3rd level, it is difficult to next motor-driven crossing is shown in the visual range, and onboard navigation system is led to
Found after crossing calculating, under the 1st rank engineer's scale and under the 2nd rank engineer's scale, next motor-driven crossing is shown in institute
State in visual range, then the current displaying ratio of the adjustment electronic map, makes the visual range and the present bit detected
Put to be adapted with the distance at next motor-driven crossing and specifically refer to displaying ratio being adjusted to the 2nd rank engineer's scale, because now
2nd rank engineer's scale is only appropriate displaying ratio.
Fig. 3 to Fig. 4 is the schematic diagram for the current displaying ratio for adjusting electronic map.With reference to Fig. 2 and Fig. 3, Fig. 4 couple
The current displaying ratio of adjustment electronic map illustrates.
Referring still to Fig. 2, it is assumed that for vehicle in current location a, B crossings are current location a next motor-driven crossings, are detected
Current location a and the distance of next motor-driven crossing (B crossings), under engineer's scale 1, can suitably be shown at B crossings can
Depending in the range of.
Assume again that vehicle drives to current location b, then B crossings are current location b next motor-driven crossings, detect and work as
Front position b and the distance of next motor-driven crossing (B crossings), suitably can be shown in visual range under engineer's scale 2, and
Then it is difficult to B crossings being shown in visual range under other bigger engineer's scales, now then can be by the current aobvious of electronic map
Show that ratio is adjusted to engineer's scale 2.After current displaying ratio is adjusted into engineer's scale 2, the guiding interface where the path of navigation
The content of 20 displays is as shown in Figure 3.Certainly, during vehicle drives towards B crossings, current display can also further be amplified
Ratio, it is adapted the distance of current location and B crossing of the visual range with detecting.
Similarly, it is assumed that vehicle drives to current location c after being turned at B crossings, then C crossings are the next of current location c
Motor-driven crossing, current location c and next motor-driven crossing (C crossings) distance are detected, can suitably be shown under engineer's scale 3
It is shown in visual range, and is then difficult to C crossings being shown in visual range under other bigger engineer's scales, now can then incites somebody to action
The current displaying ratio of electronic map is adjusted to engineer's scale 3.After current displaying ratio is adjusted into engineer's scale 3, the guiding road
The content that guiding interface 20 where footpath is shown is as shown in Figure 4.It should be noted that because onboard navigation system is in navigation procedure
In, generally using the front of vehicle as visual angle, therefore, to western direction running after being turned at B crossings, before still showing current vehicle position
The visual range of side, now, arrow mark changes.Certainly, can also be further during vehicle drives towards C crossings
Amplify current displaying ratio, be adapted the distance of current location and C crossing of the visual range with detecting.
If vehicle northwards travels after being turned at C crossings, the distant of current location and next motor-driven crossing is judged,
Then need the current displaying ratio of diminution electronic map.
In the specific implementation, the current displaying ratio of the adjustment electronic map, makes the visual range and detects
The distance at current location and next motor-driven crossing, which is adapted, to be included：The current display ratio of electronic map is zoomed in or out step by step
Example, until the distance of current location and next motor-driven crossing of the visual range with detecting is adapted.If present bit
Put it is distant with next motor-driven crossing, then step by step reduce electronic map engineer's scale, make motor-driven crossing still in visual model
In enclosing；And if current location and next motor-driven crossing are closer to the distance, then the engineer's scale of amplification electron map step by step, makes map
More details information can be shown.By way of the current displaying ratio for adjusting electronic map step by step, electronic map institute can be made
The content of display is realized and seamlessly transitted, and user will not be made to feel too lofty.
Certainly, in the specific implementation, the mode for adjusting current displaying ratio step by step, the adjustment electronics can not also be taken
The current displaying ratio of map, the distance of current location and next motor-driven crossing of the visual range with detecting is set mutually to fit
It can also should include：The current displaying ratio of electronic map is arranged to the visual range and the current location that detects with
The adaptable corresponding displaying ratio of the distance at one motor-driven crossing.By the way that directly the current displaying ratio of electronic map is adjusted
The displaying ratio adaptable with the distance at next motor-driven crossing to the visual range and the current location detected, Ke Yigeng
Realize soon and next motor-driven crossing is shown in the visual range, avoid data when adjusting current displaying ratio step by step
Loading capacity it is big the problem of, navigation efficiency can be made higher.
It should be noted that in some cases, typically current displaying ratio can't frequently be adjusted, for example,
When user's traveling is on super expressway, then within a very long time, situations such as user can less encounter turning, vehicle
Current location is in larger distance with next motor-driven crossing, all the time can just be closed next motor-driven crossing under some displaying ratio
It is shown in the visual range, current displaying ratio need not be now adjusted suitablely.Therefore, the present embodiment provides
Air navigation aid also includes：If detecting, current location and the distance at next motor-driven crossing are less than or equal to predetermined threshold value, triggering
Adjustment to the current displaying ratio of electronic map.That is the distance of current location and next motor-driven crossing is contracted to certain limit
It is interior, just triggering to the distance at current location under the current displaying ratio of electronic map and next motor-driven crossing whether with it is described can
The judgement being adapted depending on scope.In this way, the meaningless calculating of onboard navigation system largely repeatedly can be avoided, the fortune of system is reduced
Calculate load.
To sum up, the air navigation aid provided by the present embodiment, can realize the adjust automatically electronic map in navigation procedure
Current displaying ratio, it is ensured that next motor-driven crossing can be properly displayed in the visual range in front of current location all the time
It is interior, allow users to understand motor-driven crossing relevant information in time, preparation is made to changes such as travel direction, speed in time, thus
Navigation efficiency is improved, user need not manually adjust current displaying ratio, also ensure that traffic safety and enhance user's
Navigation experience.
Corresponding to above-mentioned air navigation aid, the present embodiment also provides a kind of guider.Fig. 5 is provided in an embodiment of the present invention
The structural representation of guider, as shown in figure 5, the guider includes：Unit 101 is calculated in path, suitable for based on navigation
Request carries out guidance path calculation to obtain path of navigation；Detection unit 102, it is connected with path calculation unit 101, is suitable to
Carried out with the path of navigation in navigation procedure, the distance of detection current location and next motor-driven crossing；The motor-driven crossing
Refer to the road cross to match with the prompt message in navigation procedure；Visual range determining unit 103, suitable for obtaining electronically
The corresponding distance representated by per screen pixels of the displaying ratios at different levels of figure, to determine per the current location under one-level displaying ratio
The visual range in front；Adjustment unit 104, it is connected with the detection unit 102, visual range determining unit 103, suitable for adjustment
The current displaying ratio of electronic map, make the visual range and the current location detected and the distance at next motor-driven crossing
It is adapted.
In the present embodiment, the current location is the current location for matching the path of navigation, the current location with
The distance at next motor-driven crossing is current location and distance of next motor-driven crossing on the path of navigation.
In the present embodiment, the guider also includes trigger element 105, with the detection unit 102, adjustment unit
104 are connected, and during suitable for being less than or equal to predetermined threshold value in the distance for detecting current location and next motor-driven crossing, trigger pair
The adjustment of the current displaying ratio of electronic map.
In the present embodiment, the guider also includes Tip element 106, single with path calculation unit 101, detection
Member 102 is connected, and the prompt message being adapted to provide in the navigation procedure, the prompt message includes：Voice message, word carry
Show, at least one of picture cues and visual prompts.The Tip element 106 is based on path calculation unit 101 and calculated
Relevant information in the path of navigation gone out, steering can be arranged in, diverged, driven into the road cross such as super expressway and carry out prompting letter
The displaying of breath, and road cross corresponding with the prompt message is motor-driven crossing, the detection unit 102 just can be from carrying
Show that unit 106 gets the relevant information at the motor-driven crossing and (especially judges which road cross is next reserve road
Mouthful), and then the distance of current location and next motor-driven crossing can be detected.
When it is implemented, the adjustment unit 104 can zoom in or out electronic map step by step when adjusting displaying ratio
Current displaying ratio, until the distance of current location and next motor-driven crossing of the visual range with detecting mutually is fitted
Should, the current displaying ratio of electronic map can also be directly disposed as to the visual range and the current location that detects with
The adaptable corresponding displaying ratio of the distance at one motor-driven crossing.In the present embodiment, the visual range is worked as with what is detected
The distance at front position and next motor-driven crossing, which is adapted, to be specifically included：Next motor-driven crossing is shown in described visual
In the range of.
It should be noted that the visual range is associated with the dimensions of the display screen of guider.
In addition, in present embodiment, a kind of navigation system for including above-mentioned guider is additionally provided.The navigation dress
Put and the specific implementation of navigation system refers to above-mentioned air navigation aid, will not be repeated here.
To sum up, the navigation system and air navigation aid and device that embodiment of the present invention provides, at least have following beneficial to effect
Fruit：
In navigation procedure is carried out with path of navigation, by detecting the distance of current location and next motor-driven crossing, and
The corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine per institute under one-level displaying ratio
State the visual range in front of current location, the current displaying ratio of adjust automatically electronic map, make under current displaying ratio can
Distance depending on current location and next motor-driven crossing of the scope with detecting is adapted, so as to realize in bootup process
The displaying ratio of adjust automatically electronic map, it is ensured that next motor-driven crossing can be properly displayed in front of current location all the time
Visual range in, which thereby enhance navigation efficiency, ensure traffic safety and enhance the navigation experience of user.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention
Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (13)
- A kind of 1. air navigation aid, it is characterised in that including：Guidance path calculation is carried out based on navigation requests to obtain path of navigation；Carried out with the path of navigation in navigation procedure, the distance of detection current location and next motor-driven crossing；It is described motor-driven Crossing refers to the road cross to match with the prompt message in navigation procedure；The corresponding distance representated by per screen pixels of displaying ratios at different levels of electronic map is obtained, to determine per one-level displaying ratio Under visual range in front of the current location；The current displaying ratio of electronic map is adjusted, makes the visual range and the current location detected and next reserve road The distance of mouth is adapted；Wherein, the current displaying ratio of the adjustment electronic map, makes the visual range and the current location that detects with The distance at one motor-driven crossing, which is adapted, to be included：The current displaying ratio of electronic map is zoomed in or out step by step, until described can Distance depending on current location and next motor-driven crossing of the scope with detecting is adapted；The visual range is adapted with the current location detected and the distance at next motor-driven crossing to be included：Will be described next Individual motor-driven crossing is shown in the visual range.
- 2. air navigation aid according to claim 1, it is characterised in that the current location is to match the path of navigation Current location, the distance at the current location and next motor-driven crossing is for current location with next motor-driven crossing described Distance on path of navigation.
- 3. air navigation aid according to claim 1, it is characterised in that if detecting current location and next motor-driven crossing Distance be less than or equal to predetermined threshold value, trigger the adjustment to the current displaying ratio of electronic map.
- 4. air navigation aid according to claim 1, it is characterised in that the current displaying ratio of the adjustment electronic map, The visual range is adapted with the current location detected and the distance at next motor-driven crossing includes：By electronic map The distance that current displaying ratio is arranged to current location and next motor-driven crossing of the visual range with detecting is adapted Corresponding displaying ratio.
- 5. air navigation aid according to claim 1, it is characterised in that the display screen of the visual range and guider Dimensions is associated.
- 6. air navigation aid according to claim 1, it is characterised in that the prompt message in the navigation procedure includes：Language At least one of sound prompting, text prompt, picture cues and visual prompts.
- A kind of 7. guider, it is characterised in that including：Unit is calculated in path, suitable for carrying out guidance path calculation based on navigation requests to obtain path of navigation；Detection unit, suitable for being carried out with the path of navigation in navigation procedure, detection current location and next motor-driven crossing Distance；The motor-driven crossing refers to the road cross to match with the prompt message in navigation procedure；Visual range determining unit, displaying ratios at different levels suitable for obtaining electronic map it is corresponding representated by per screen pixels away from From to determine per the visual range under one-level displaying ratio in front of the current location；Adjustment unit, suitable for adjusting the current displaying ratio of electronic map, make the visual range and the current location detected It is adapted with the distance at next motor-driven crossing, including：Next motor-driven crossing is shown in the visual range It is interior；Wherein, the adjustment unit zooms in or out the current displaying ratio of electronic map step by step, until the visual range and inspection The distance of the current location measured and next motor-driven crossing is adapted.
- 8. guider according to claim 7, it is characterised in that the current location is to match the path of navigation Current location, the distance at the current location and next motor-driven crossing is for current location with next motor-driven crossing described Distance on path of navigation.
- 9. guider according to claim 7, it is characterised in that also including trigger element, suitable for detecting currently When the distance of position and next motor-driven crossing is less than or equal to predetermined threshold value, trigger to the current displaying ratio of electronic map Adjustment.
- 10. guider according to claim 7, it is characterised in that the adjustment unit shows the current of electronic map It is corresponding to show that ratio setting is adapted for the visual range with the current location detected and the distance at next motor-driven crossing Displaying ratio.
- 11. guider according to claim 7, it is characterised in that the display screen of the visual range and guider Dimensions be associated.
- 12. guider according to claim 7, it is characterised in that also including Tip element, be adapted to provide for the navigation During prompt message, the prompt message includes：In voice message, text prompt, picture cues and visual prompts extremely Few one kind.
- 13. a kind of navigation system, it is characterised in that including the guider described in any one of claim 7 to 12.
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| CN201110457211.4A CN103185600B (en) | 2011-12-30 | 2011-12-30 | Navigation system and air navigation aid and device |
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| CN201110457211.4A CN103185600B (en) | 2011-12-30 | 2011-12-30 | Navigation system and air navigation aid and device |
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| CN103185600B true CN103185600B (en) | 2017-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104613969B (en) * | 2013-12-13 | 2017-09-29 | 腾讯科技（深圳）有限公司 | Route methods of exhibiting and device |
| CN105091899A (en) * | 2014-05-05 | 2015-11-25 | 昆达电脑科技(昆山)有限公司 | Navigation turning prompting method |
| KR20150137799A (en) * | 2014-05-30 | 2015-12-09 | 엘지전자 주식회사 | Mobile terminal and method for controlling the same |
| WO2016065513A1 (en) | 2014-10-27 | 2016-05-06 | 深圳市大疆创新科技有限公司 | Method and apparatus for prompting position of air vehicle |
| CN105571608B (en) * | 2015-12-22 | 2019-03-19 | 苏州佳世达光电有限公司 | Navigation system, vehicle and navigation map transmission method |
| KR102207469B1 (en) * | 2015-12-25 | 2021-01-25 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Navigation method, and navigation terminal and server |
| CN105675008A (en) * | 2016-01-08 | 2016-06-15 | 北京乐驾科技有限公司 | Navigation display method and system |
| CN105865483B (en) * | 2016-03-31 | 2019-05-31 | 百度在线网络技术（北京）有限公司 | The control method and device of navigation map |
| CN106781602B (en) * | 2016-12-05 | 2019-09-10 | 北京中交兴路信息科技有限公司 | A kind of method and device showing vehicle running track |
| CN108489506B (en) * | 2018-03-02 | 2020-12-18 | 百度在线网络技术（北京）有限公司 | Method, device, terminal and medium for displaying enlarged intersection image |
| CN110779541B (en) * | 2019-04-10 | 2021-11-23 | 北京嘀嘀无限科技发展有限公司 | Display method and system of steering arrow |
| CN110347771B (en) * | 2019-07-15 | 2022-04-22 | 北京百度网讯科技有限公司 | Method and apparatus for presenting a map |
| CN110514219B (en) * | 2019-09-20 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Navigation map display method and device, vehicle and machine readable medium |
| CN113267200A (en) * | 2020-02-14 | 2021-08-17 | 阿里巴巴集团控股有限公司 | Navigation display control method and device and electronic equipment |
| CN112373466A (en) * | 2020-10-12 | 2021-02-19 | 上汽通用五菱汽车股份有限公司 | Cruise control method added with vehicle-mounted navigation information |
| CN112988927B (en) * | 2021-02-03 | 2021-12-14 | 腾讯科技（深圳）有限公司 | Map data processing method and device, computer equipment and storage medium |
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| JP2005308543A (en) * | 2004-04-21 | 2005-11-04 | Denso Corp | Electronic equipment with map display function and program |
| JP4948944B2 (en) * | 2006-09-06 | 2012-06-06 | アルパイン株式会社 | Navigation device and method for drawing intersection guide map |
| CN101216322B (en) * | 2007-12-28 | 2012-06-20 | 深圳市凯立德欣软件技术有限公司 | Road crossing navigation picture display process, device and GPS navigation equipment |
| KR100944641B1 (en) * | 2008-03-26 | 2010-03-04 | 팅크웨어(주) | Apparatus and method for changing view angle in three dimesion route guidance system |
| CN101387521A (en) * | 2008-10-27 | 2009-03-18 | 凯立德欣技术（深圳）有限公司 | Navigation head for auto-changing scale and method thereof |
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Denomination of invention: Navigation system, and navigation method and device Effective date of registration: 20190404 Granted publication date: 20171128 Pledgee: Jiading Branch of Shanghai Bank Co.,Ltd. Pledgor: SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: 2019110000002 |
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