CN101373142B - Navigation system and accurate navigation method of road crossing - Google Patents
Navigation system and accurate navigation method of road crossing Download PDFInfo
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- CN101373142B CN101373142B CN2008102242955A CN200810224295A CN101373142B CN 101373142 B CN101373142 B CN 101373142B CN 2008102242955 A CN2008102242955 A CN 2008102242955A CN 200810224295 A CN200810224295 A CN 200810224295A CN 101373142 B CN101373142 B CN 101373142B
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Abstract
The invention relates to a navigation system and an intersection accurate navigation method thereof. According to the method, firstly a navigation path is planed according to the starting place and the destination determined by a user; a navigation display is performed on an electronic map at a speed of a self-vehicle location detection module as a traveling speed of a user's vehicle, and whether a plurality of adjacent sequential node sections are on the planned navigation path during the traveling process of a user is judged; and a navigation display is performed on an electronic map at a speed of a velocity sensing element of the user's vehicle as a traveling speed of a user's vehicle when the user's vehicle approaches to the section with the plurality of adjacent sequential node sections at a distance. After the technical proposal of the invention is adopted, the influence on the users' navigation caused by the variation of the navigation speed and the actual traveling speed of the user's vehicle on sections such as a overhead viaduct, an intersection with multi-sideways, a roundabout and the like can be eliminated, and the influence on the system navigation caused by speed switching can also be reduced to a maximum extent.
Description
Technical field
The invention belongs to field of navigation technology, relate in particular to a kind of navigational system and accurate navigation method of road crossing thereof.
Background technology
At present, (Global Positioning System GPS) is one of GPS navigation important application direction to automobile-used GPS.The gps antenna of automobile-used GPS navigation system receives from 3 data messages that transmitted in earth-circling 24 gps satellites at least; In conjunction with the electronic chart that is stored in the Vehicular navigation terminal; The position coordinates of confirming through gps satellite signal is complementary therewith, confirms the accurate position of navigation object in electronic chart.The user of steering vehicle can transfer to computer and select driving path when driving, and as direction guiding, thereby correctly arrive the destination apace.
Fig. 1 is the structural drawing of Vehicular guidance system in the prior art, and this Vehicular guidance system is made up of loudspeaker 1, chuck assembly 2, input media 3, voice output 4, display device 5, control device 6, GPS receiving trap 7 etc.
Chuck assembly 2 can be reduced into numerical data to the recorded content that inserts in the recording medium that records map datum, control program data etc. wherein, and delivers to and deliver to control device 6.
Input media 3 is made up of button, rocking bar, knob, touch-screen etc.Input media 3 is used to import user's various requirement.Input media 3 is delivered to user's input signal in the control device 6.
The voice data translation that voice output 4 is sent control device 6 here is a voice signal, delivers to loudspeaker 1.The voice signal that loudspeaker 1 is sent voice output 4 here converts sound and output to, and like this, loudspeaker 1 just can cooperate the needs of control device 6, sends the voice of various operational notifications and route guidance.
7 receptions of GPS receiving trap detect the present position and the moving direction of vehicle from the signal of gps satellite, and convert detected result to protocol data, and these protocol datas further are sent to control device 6.
When user's vehicle moves, navigational system be through certain hour at interval in (being generally 1 second) obtain the position of user's vehicle twice, know its speed (below be called navigation speed) with twice alternate position spike divided by the above-mentioned time interval.Owing to reasons such as satellite-signal transmission, the actual speed of this navigation speed and vehicle has certain deviation.Though in the prior art, directly the values for actual speed importing navigational system with the vehicle speed counting device has become possibility, for the demonstration with electronic chart is consistent, does not still have to adopt the mode of navigating with the vehicle actual speed in the navigational system.
In navigation of electronic map, the point of crossing that has road to cross on the map is referred to as node, and the user need judge the direct of travel of oneself at the node place.Navigational system also can be sent suggestion voice when closing on node, common prompting mode is for telling which kind of operation the user carries out after certain distance, gets into auxilliary road as turning right behind 500 meters in: the place ahead.And march to when on same working direction, having the highway sections such as continuous fork in the road of a plurality of vicinities like overpass, the crossings with many forks, rotary island etc. the user; If the speed of a motor vehicle is very fast; Then the deviation of navigation speed and actual speed may make the user miss some branch road, for user's use is made troubles.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of guider, especially a kind of navigational system and accurate navigation method of road crossing thereof.
The objective of the invention is to realize through following technical scheme:
A kind of navigational system; Said system comprises navigation module, user interface control module and map data management module; Said navigation module comprises detection module, path searcher module, route guidance module, Navigation Control module, map display module from the car position; Said transport condition and the position of detecting user's vehicle from the car position, departure place and destination that said path searcher module and route guidance module are set according to the user are in conjunction with the transport condition of said user's vehicle; Generate guidance path and guidance information; Said map display module of said Navigation Control module controls and user interface control module are navigated to the user according to said guidance path and guidance information, and said navigation module comprises that also a speed shows handover module; Said speed shows that handover module selectively receives from said velocity amplitude signal from car position detection module and user's car speed sensing element; According to the transport condition of user's vehicle, export a velocity amplitude to said Navigation Control module, the demonstration of navigating.
In navigational system of the present invention; Said speed shows that handover module has a plurality of a distance, highway section of closing on continuous node in user's vehicle distances; From receive from said from the car position velocity amplitude signal of detection module, switch to the velocity amplitude signal of reception from said user's car speed sensing element.
In navigational system of the present invention, said certain distance is 100 meters.
In navigational system of the present invention, when said speed shows handover module the distance between the continuous node on a certain highway section is less than a predeterminable range in guidance path, said highway section is identified as has a plurality of highway sections of closing on continuous node.
In navigational system of the present invention, said predeterminable range is 20 meters.
A kind of accurate navigation method of road crossing said method comprising the steps of:
A. departure place and the destination set according to the user, the planning guidance path, with from the velocity amplitude of detection module from the car position as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle;
B. judge in the guidance path of said planning whether have a plurality of highway sections of closing on continuous node, then get into step c if having;
C. have a plurality of a distance, highway section of closing on continuous node at user's vehicle near said, since from the velocity amplitude of user's car speed sensing element as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle
In accurate navigation method of road crossing of the present invention, said step b further comprises: judges has the operation that need not change direction at the said a certain node place that has on a plurality of highway sections of closing on continuous node.
In accurate navigation method of road crossing of the present invention; It is characterized in that; Said step b further comprises: write down said position with the first node on a plurality of highway sections of closing on continuous node, the distance of user's vehicle and the node distance as the said highway section of user distance is stored.
In accurate navigation method of road crossing of the present invention, said certain distance is 100 meters.
Adopt after the technical scheme of the present invention; Can eliminate the influence that navigation speed and the deviation of the actual translational speed of user's vehicle are brought user's navigation in highway sections such as overpass, crossings, rotary islands, the influence that the switching that at utmost underspeeds is simultaneously navigated and brought system with many forks.
Description of drawings
Fig. 1 is the module map of the automobile-used GPS navigation of prior art system.
Fig. 2 is the module map of navigational system of the present invention.
Fig. 3 is that the present invention is to judging whether have a plurality of synoptic diagram that close on the highway section of continuous node in the current guidance path.
Fig. 4 is the process flow diagram of accurate navigation method of road crossing of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Design of the present invention is; March to the location that on same working direction, has the continuous fork in the road of a plurality of vicinities the user; Like overpass, the crossing with many forks, rotary island etc., navigational system switch speed display mode navigates with the actual speed of vehicle.
See also Fig. 2, be the module map of navigational system of the present invention.Navigational system of the present invention mainly comprises navigation module, user interface control module and map data management module.Wherein, navigation module comprises further that from the car position detection module, path searcher module, route guidance module, Navigation Control module, map display module and speed show handover module.
When the user uses navigational system to carry out general path navigation; Detection module receives the signal from gps satellite through the GPS receiving trap from the car position; Detect position, moving direction and the gait of march of vehicle, and, be sent to path searcher module detected result.
Path searcher module receives the vehicle location information from the detection module from the car position; And with the present position of vehicle as the departure place; The user imports the place as the destination; Obtain map datum from the map data management module, and processing is directly explored in walking along the street in fact, and with track search return path bootstrap module as a result.
Then; Route guidance module obtains map datum from the map data management module; It is carried out the path induce processing, and, read and Navigation Control so that the map data management module is predicted inducing result to return to map data management module and Navigation Control module.
Navigation Control module controls map display module generates the video data that map shows usefulness according to the map data information of reading from the map data management module, delivers to the user interface control module.Data such as the interface in the time of also will inducing in addition, navigation speech send the user interface control module to, and the user is navigated.
Speed shows that handover module is connected to the velocity pick-up element from car position detection module and vehicle simultaneously; Selectively receive from from car position detection module and velocity pick-up component speeds signal, and export a velocity amplitude to Navigation Control module according to above-mentioned rate signal.
See also Fig. 3, during work, speed shows among the current guidance path S of at first judgement system of handover module for user's recommendation whether have a plurality of highway sections of closing on continuous node.When the distance between the continuous node a on a certain highway section L among the guidance path S, b, the c during less than a predeterminable range; Speed demonstration handover module is identified as above-mentioned continuous node a, b, c and closes on node, this highway section L is identified as have a plurality of highway sections of closing on continuous node.In this embodiment, above-mentioned distance is 20 meters.
In judging guidance path S, exist have a plurality of highway section L that close on continuous node after, speed shows the position of the first node a on handover module record this highway section L, and the distance of user's vehicle and the node a distance as user distance highway section L is stored.
In the common driving process of user, speed shows that handover module receives from the rate signal from car position detection module, with navigation speed as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle.Simultaneously, in judging guidance path, have a plurality of highway sections of closing on continuous node after, further judges has operation such as need not a certain node place on this highway section change direction.If have, then near this a distance, highway section, switch speed display mode.Speed shows that handover module receives from velocity pick-up component speeds signal, with the vehicle actual speed as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle.
Like this, can, the elimination velocity deviation at utmost underspeed and switch the influence that navigation brings to system navigate influence to the user when.
Usually, speed shows that handover module is 100 meters of the first node switch speed display mode that closes on node in distance continuously, and the user also can set as required.
See also Fig. 4, accurate navigation method of road crossing of the present invention mainly may further comprise the steps:
Step S401: according to departure place and the destination that the user sets, the planning guidance path, with from the rate signal of detection module from the car position as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle.
Step S403: in the current guidance path of judgement system for user's recommendation, whether have a plurality of highway sections of closing on continuous node.When the distance between the continuous node on a certain highway section in the guidance path during less than a predeterminable range, above-mentioned continuous node is identified as closes on node, this highway section is identified as has a plurality of highway sections of closing on continuous node.In this embodiment, above-mentioned distance is 20 meters.
Step S405: write down the position of the first node on this highway section, the distance of user's vehicle and the node distance as this highway section of user distance is stored.
Step S407: further judges has operation such as need not a certain node place on this highway section change direction.
Step S409: near this a distance, highway section, switch speed display mode.With from the rate signal of car speed sensing element as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle.
Usually, speed shows that handover module is 100 meters of the first node switch speed display mode that closes on node in distance continuously, and the user also can set as required.
Adopt after the technical scheme of the present invention; Can eliminate the influence that navigation speed and the deviation of the actual translational speed of user's vehicle are brought user's navigation in highway sections such as overpass, crossings, rotary islands, the influence that the switching that at utmost underspeeds is simultaneously navigated and brought system with many forks.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. navigational system; Said system comprises navigation module, user interface control module and map data management module; Said navigation module comprises detection module, path searcher module, route guidance module, Navigation Control module, map display module from the car position, and said detection module detects the transport condition and the position of user's vehicle from the car position, and said path searcher module and route guidance module are according to the departure place and the destination of user's setting; Transport condition in conjunction with said user's vehicle; Generate guidance path and guidance information, said map display module of said Navigation Control module controls and user interface control module are navigated to the user according to said guidance path and guidance information; It is characterized in that; Said navigation module comprises that also a speed shows handover module, and said speed shows that handover module selectively receives from said velocity amplitude signal from car position detection module and user's car speed sensing element, according to the transport condition of user's vehicle; Export a velocity amplitude to said Navigation Control module, the demonstration of navigating;
Said speed shows that handover module has a plurality of a distance, highway section of closing on continuous node in user's vehicle distances; From receive from said from the car position velocity amplitude signal of detection module, switch to the velocity amplitude signal of reception from said user's car speed sensing element;
When said speed shows handover module the distance between the continuous node on a certain highway section is less than a predeterminable range in guidance path, said highway section is identified as has a plurality of highway sections of closing on continuous node.
2. navigational system as claimed in claim 1 is characterized in that, said certain distance is 100 meters.
3. navigational system as claimed in claim 1 is characterized in that, said predeterminable range is 20 meters.
4. an accurate navigation method of road crossing is characterized in that, said method comprising the steps of:
A. departure place and the destination set according to the user, the planning guidance path, with from the velocity amplitude of detection module from the car position as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle;
B. judge in the guidance path of said planning whether have a plurality of highway sections of closing on continuous node, then get into step c if having; Said step b further comprises: write down said position with the first node on a plurality of highway sections of closing on continuous node, the distance of user's vehicle and the node distance as the said highway section of user distance is stored; Wherein, Judge in the guidance path of said planning; Whether having a plurality of highway sections of closing on continuous node is: the distance between the continuous node in guidance path on a certain highway section is during less than a predeterminable range, said highway section is identified as have a plurality of highway sections of closing on continuous node;
C. have a plurality of a distance, highway section of closing on continuous node at user's vehicle near said, since from the velocity amplitude of user's car speed sensing element as the demonstration of on electronic chart, navigating of the translational speed of user's vehicle.
5. accurate navigation method of road crossing as claimed in claim 4 is characterized in that, said step b further comprises: judges has the operation that need not change direction at the said a certain node place that has on a plurality of highway sections of closing on continuous node.
6. like any described accurate navigation method of road crossing of claim 4 to 5, it is characterized in that said certain distance is 100 meters.
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| CN2008102242955A CN101373142B (en) | 2008-10-16 | 2008-10-16 | Navigation system and accurate navigation method of road crossing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102024335B (en) * | 2010-12-24 | 2012-12-05 | 同济大学 | Speed guiding method serving the green wave control of urban trunk roads |
| CN102364550B (en) * | 2011-10-12 | 2013-09-18 | 北京世纪高通科技有限公司 | Method and device for selecting information trigger position |
| CN103900591B (en) * | 2012-12-25 | 2017-11-07 | 上海博泰悦臻电子设备制造有限公司 | Along the air navigation aid and device of navigation way periphery precise search point of interest |
| CN112732859B (en) * | 2021-01-25 | 2022-05-06 | 腾讯科技（深圳）有限公司 | Prompt information generation method and device, electronic equipment and storage medium |
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| CN1821719A (en) * | 2005-02-16 | 2006-08-23 | Lg电子株式会社 | Guiding a drive path of a moving object in a navigation system |
| CN1928567A (en) * | 2005-09-06 | 2007-03-14 | 索尼株式会社 | Velocity detection, position detection and navigation system |
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|---|---|---|---|---|
| CN1821719A (en) * | 2005-02-16 | 2006-08-23 | Lg电子株式会社 | Guiding a drive path of a moving object in a navigation system |
| CN1928567A (en) * | 2005-09-06 | 2007-03-14 | 索尼株式会社 | Velocity detection, position detection and navigation system |
| CN101097144A (en) * | 2006-06-30 | 2008-01-02 | 佛山市顺德区顺达电脑厂有限公司 | Navigation system having realistic display and method thereof |
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