CN101526365B - Fuzzy navigation method and device thereof - Google Patents
Fuzzy navigation method and device thereof Download PDFInfo
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- CN101526365B CN101526365B CN 200910081198 CN200910081198A CN101526365B CN 101526365 B CN101526365 B CN 101526365B CN 200910081198 CN200910081198 CN 200910081198 CN 200910081198 A CN200910081198 A CN 200910081198A CN 101526365 B CN101526365 B CN 101526365B
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Abstract
The invention provides a fuzzy navigation method and a device thereof. The fuzzy navigation method comprises the following steps: step A: a destination is determined, and the distance between a current position and the destination is calculated; step B: whether the distance between the current position and the destination is smaller than a standard value preset in a navigation system, if yes, an electronic map and the position of the destination are displayed according to the map scale corresponding to the standard value, and if no, the step C is turned to; step C: a plurality of points on a circle which takes the current position as the circle center with a certain radius are determined, and distances between the points and the destination are calculated; step D: the point with the smallest distance from the destination is selected and the direction of the point from a starting position is taken as the driving direction, and the driving direction is displayed. Users of the invention can drive to the direction of the destination smoothly when no navigation reference object or no navigation path is provided, lowering the getting-lost possibility of the users.
Description
Technical field
The invention belongs to field of navigation technology, relate in particular to a kind of fuzzy navigation method and device.
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.In the prior art; The user is provided with departure place and destination through guider; Navigational system is according to the road network attribute information path planning and the demonstration of the electronic chart of departure place, destination and navigational system stored, and the user can arrive the destination under the guide in this path.
In actual conditions, need not have the situation of guidance path through grassland, desert or other but the user can occur, especially in grassland and desert, object of reference that can be for reference seldom, the possibility of getting lost is very big.Yet existing navigational system need have under the situation of guidance path and could guide the user by path planning, thereby but having occurred under the situation of not having guidance path, the user has the situation that guider but can't navigate.
Summary of the invention
The object of the present invention is to provide a kind of fuzzy navigation method and device, but to solve in the prior art under the situation of not having guidance path, the user has the problem that guider but can't navigate.
The technical scheme that the present invention takes is: a kind of fuzzy navigation method may further comprise the steps:
Steps A: set the destination, calculate current location to the distance between the destination;
Step B: judge current location to the distance between the destination whether less than standard value preset in the navigational system, if less than, then show the position of electronic chart and destination according to the corresponding engineer's scale of standard value, otherwise, forward step C to;
Step C: confirm with the current location to be the some spots on the circle of certain radius in the center of circle, and calculate these and put distance between the destination;
Step D: choose the point of destination apart from minimum, and with the departure place to the direction of this point as travel direction, and show said travel direction.
The technical scheme that the present invention takes also comprises: in said steps A; The setting of destination can also can directly be imported its longitude and latitude by the user and set the destination by the user through key search, piece together input methods such as retrieval, systematic searching, address book retrieval input destinations soon.
The technical scheme that the present invention takes also comprises: in said step B, said standard value can be the default value of navigational system, also can be by the requirements set of user according to oneself.
The technical scheme that the present invention takes also comprises: in said step C, said radius can be the standard value of setting in the navigational system, also can be set voluntarily by the user.
The technical scheme that the present invention takes also comprises: said step C also comprises: the quantity of selecting the point on the radius circle.
Another technical scheme that the present invention takes is: a kind of fuzzy navigation device comprises:
Destination setting module: be used for setting the enforcement destination;
Memory module: be used to store the preset criterion distance value of navigational system;
Computing module:, calculate current location to the distance between the destination according to the destination of destination setting module settings;
Judge module: link to each other with computing module, memory module respectively, obtain said predetermined criterion distance value and current location to the distance between the destination, and judge current location to the distance between the destination whether less than predetermined criterion distance value;
Comparison point is chosen module: choose the quantity and the distributing position of comparison point, it links to each other with computing module, and computing module calculates these and puts distance between the destination according to the comparison point of choosing;
The direction chosen module: be used for according to the destination apart from the point of minimum, the direction of selecting to arrive this point with the departure place is as travel direction;
Display module: show the travel direction of selecting.
The technical scheme that the present invention takes also comprises: the corresponding engineer's scale of said preset criterion distance value shows electronic chart with said engineer's scale.
The technical scheme that the present invention takes also comprises: said judge module judge current location to the distance between the destination less than the standard value of setting in the navigational system; Said display module sends prompting to the user, and shows the position of electronic chart and destination according to the corresponding engineer's scale of standard value.
The technical scheme that the present invention takes also comprises: said judge module judge current location to the distance between the destination more than or equal to the standard value of setting in the navigational system, setting with current destination through the radius setting module is the circle of the certain radius in the center of circle.
Beneficial effect of the present invention is: fuzzy navigation method of the present invention and device are through choosing on the current location certain radius circumference point nearest to the destination as the enforcement direction; Make the user when lacking the navigation object of reference or not having guidance path; Can drive towards the destination direction smoothly, reduce the possibility that the user gets lost.
Description of drawings
Fig. 1 is the process flow diagram of the fuzzy navigation method of the embodiment of the invention;
Fig. 2 is the synoptic diagram of definite travel direction of the fuzzy navigation method of the embodiment of the invention;
Fig. 3 is the structural drawing of the fuzzy navigation device of the embodiment of the 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.
See also Fig. 1, be the process flow diagram of the fuzzy navigation method of the embodiment of the invention.The fuzzy navigation method of the embodiment of the invention comprises the steps:
Step S1: set the destination.
Wherein, the setting of destination can also can directly be imported its longitude and latitude by the user and set the destination by the user through key search, piece together input methods such as retrieval, systematic searching, address book retrieval input destinations soon.
Step S2: calculate current location to the distance between the destination; And whether judge this distance less than the standard value of setting in the navigational system, if current location to the distance between the destination less than the standard value of setting in the navigational system, then forward step S3 to; Otherwise, forward step S4 to.
Wherein, this standard value can be the default value of navigational system, also can be by the requirements set of user according to oneself.The corresponding engineer's scale of this standard value shows electronic chart with this engineer's scale, and the user generally can see the various piece in the electronic chart that shows on the display device clearly.Because the processing power of navigational system is limited, therefore, the optimal way of the embodiment of the invention is: carry out next time behind the certain hour at interval after every completion one deuterzooid step, interlude is short more again, this step and after the result of the step of carrying out accurate more.
Step S3: send prompting and show the position of electronic chart and destination according to the corresponding engineer's scale of standard value to the user.In this step, the sign of destination should can know that finding out is standard with the user.
Step S4: confirm with the current location to be the some spots on the circle of certain radius in the center of circle, and calculate these and put distance between the destination.
Wherein, this certain radius can be the standard value of setting in the navigational system, also can be set voluntarily by the user, and the user also can select the quantity of the point on the radius circle among the above-mentioned steps S4.
Step S5: choose the point of destination apart from minimum, and with the departure place to the direction of this point as travel direction.
For clearly demonstrating step S4 and S5, see also Fig. 2, it confirms the synoptic diagram of travel direction for the present invention.The O point is user's a current location; The P point is the destination, on the circle that with the O point is the center of circle, selects four comparison point of A, B, C, D of this circle of the quartern, and the distance of A, B, C, four comparison point P to the destination of D is respectively L1, L2, L3, L4; Navigational system is the magnitude relationship between L1, L2, L3, the L4 relatively; Can find out that L4 is minimum from Fig. 2, navigational system is promptly selected the D point, and the direction of ordering to D with current location O is as travel direction.Certainly; Owing to only on the circle that with the O point is the center of circle, selected A, B, C, four comparison point of D this moment; The direction that the direction of ordering to D with current location O is ordered to P as travel direction and actual travel direction O point has a certain distance; Therefore can be the comparison point that is provided with in the center of circle with the O point more, E as shown in Figure 2, F, G, four comparison point of H, the H point to the destination P point apart from less than the D point to the destination P point distance L 4; The direction of then ordering to H with current location O is as travel direction, the form direction of the more approaching reality of travel direction that this travel direction is obviously definite than the direction of order to D with current location O.Can draw thus, the comparison point of in step S4, selecting is many more, the more approaching actual travel direction of the travel direction of in step S5, confirming.
Step S6: the travel direction of confirming among the step display S5, and return step S2 and calculate current location once more to the distance between the destination, and judge that whether this distance is less than the standard value of setting in the navigational system.
See also Fig. 3, be the structural drawing of the fuzzy navigation device of the embodiment of the invention.The fuzzy navigation device of the embodiment of the invention comprises that destination setting module, computing module, memory module, judge module, radius setting module, comparison point choose module, direction chosen module and display module.
The destination setting module is used for set exercising the destination, and the user can be through key search, piece together input methods input destinations such as retrieval, systematic searching, address book retrieval soon, also can directly import its longitude and latitude by the user and set the destination.
Store the criterion distance value of navigational system in the memory module, this standard value can be the default value of navigational system, also can be by the requirements set of user according to oneself.The corresponding engineer's scale of this standard value shows electronic chart with this engineer's scale, and the user generally can see the various piece in the electronic chart that shows on the display device clearly.
Computing module calculates current location to the distance between the destination according to the destination of destination setting module settings.
Judge module links to each other with computing module, memory module respectively; Obtain this predetermined criterion distance value and current location to the distance between the destination, and judge current location to the distance between the destination whether less than the criterion distance value of being scheduled to, if current location to the distance between the destination less than the standard value of setting in the navigational system; Then display module sends prompting to the user; And according to the engineer's scale demonstration electronic chart of standard value correspondence and the position of destination, otherwise, set certain radius through the radius setting module; This radius can be the standard value of setting in the navigational system, also can be set voluntarily by the user.
Comparison point is chosen quantity and the distributing position that module is chosen comparison point, and it links to each other with computing module, and computing module calculates these and puts distance between the destination according to the comparison point of choosing.
The direction chosen module be used for according to the destination apart from the point of minimum, the direction of selecting to arrive this point with the departure place is as travel direction.Display module shows the travel direction of selecting.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. fuzzy navigation method may further comprise the steps:
Steps A: set the destination, calculate current location to the distance between the destination;
Step B: judge current location to the distance between the destination whether less than standard value preset in the navigational system, if less than, then show the position of electronic chart and destination according to the corresponding engineer's scale of standard value, otherwise, forward step C to;
Step C: confirm with the current location to be the some spots on the circle of certain radius in the center of circle, and calculate these and put distance between the destination;
Step D: choose the point of destination apart from minimum, and with the departure place to the direction of this point as travel direction, and show said travel direction.
2. fuzzy navigation method according to claim 1; It is characterized in that: in said steps A; The setting of destination can also can directly be imported its longitude and latitude by the user and set the destination by the user through key search, piece together retrieval, systematic searching, address book retrieval input method input destination soon.
3. fuzzy navigation method according to claim 1 and 2 is characterized in that: in said step B, said standard value is the default value of navigational system, or the user is according to the value of the requirements set of oneself.
4. fuzzy navigation method according to claim 1 is characterized in that: in said step C, said radius is standard value of setting in the navigational system or the value of being set voluntarily by the user.
5. fuzzy navigation method according to claim 4 is characterized in that: said step C also comprises: the quantity of selecting the point on the radius circle.
6. a fuzzy navigation device is characterized in that, comprising:
Destination setting module: be used for setting the enforcement destination;
Memory module: be used to store the preset criterion distance value of navigational system;
Computing module:, calculate current location to the distance between the destination according to the destination of destination setting module settings;
Judge module: link to each other with computing module, memory module respectively, obtain said preset criterion distance value and current location to the distance between the destination, and judge current location to the distance between the destination whether less than preset criterion distance value;
The radius setting module: according to said judge module judge current location to the distance between the destination more than or equal to the standard value of setting in the navigational system, setting with the current location is the circle of the certain radius in the center of circle;
Comparison point is chosen module: choose the quantity and the distributing position of the comparison point on the certain radius circle that the radius setting module sets, it links to each other with computing module, and the comparison point that the computing module basis is chosen is calculated these to distance between the destination;
The direction chosen module: be used for according to the destination apart from the point of minimum, the direction of selecting to arrive this point with the departure place is as travel direction;
Display module: show the travel direction of selecting.
7. fuzzy navigation device according to claim 6 is characterized in that, the corresponding engineer's scale of said preset criterion distance value shows electronic chart with said engineer's scale.
8. according to claim 6 or 7 described fuzzy navigation devices; It is characterized in that; Said judge module judge current location to the distance between the destination less than the standard value of setting in the navigational system; Said display module sends prompting to the user, and shows the position of electronic chart and destination according to the corresponding engineer's scale of standard value.
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| CN 200910081198 CN101526365B (en) | 2009-04-07 | 2009-04-07 | Fuzzy navigation method and device thereof |
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| CN101526365B true CN101526365B (en) | 2012-12-12 |
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| CN102901501B (en) * | 2011-07-26 | 2016-03-02 | 高德软件有限公司 | Target position query method and server |
| CN103017778B (en) * | 2011-09-26 | 2015-08-26 | 联想(北京)有限公司 | A kind of determining method of path and electronic equipment |
| PT105929B (en) * | 2011-10-12 | 2014-11-17 | Univ Do Minho | SYSTEM AND METHOD OF CALCULATION OF ROUTES |
| CN109969038B (en) * | 2019-04-16 | 2021-09-21 | 爱驰汽车有限公司 | Energy management method, system, equipment and storage medium for vehicle-mounted dual-source battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1825059A (en) * | 2006-03-28 | 2006-08-30 | 北京瑞图万方科技有限公司 | Fuzzy navigation method and system based on position |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1825059A (en) * | 2006-03-28 | 2006-08-30 | 北京瑞图万方科技有限公司 | Fuzzy navigation method and system based on position |
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