CN107066606A - A kind of KEY value calculating methods and device based on recorder management platform - Google Patents
A kind of KEY value calculating methods and device based on recorder management platform Download PDFInfo
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Abstract
The present invention relates to a kind of acceleration coordinate transformation method and device based on recorder management platform, belong to electronic map vehicle position information process field, in order to solve existing recorder management platform without deviant caching function, the shortcoming of platform operations performance is had a strong impact on when the coordinate data amount received is larger, and proposes a kind of acceleration coordinate transformation method and device based on recorder management platform.The method of the present invention includes：Pending geographical coordinate is converted into two-dimentional rectangular co-ordinate；According to given precision, mesh generation is carried out to coordinate system；The southwestern point coordinates of grid where solving coordinate；The abscissa and ordinate of southwestern point coordinates are combined to form character string, KEY values are used as；Coordinate of the KEY values for characterizing the grid at pending geographical coordinate.The present invention is applied to the electronic map positioning of recorder management platform.
Description
Technical field
The present invention relates to a kind of KEY value calculating methods and device based on recorder management platform, belong to electronic map car
Position information process field.
Background technology
When recorder management platform shows vehicle position information on the electronic map, it is necessary first to enter line displacement to coordinate and turn
Change, afterwards with the offset coordinates after conversion, just can correctly show on the electronic map.Platform is needed by extranet access Ministry of Communications
The coordinate offset service for the Map Services business issue specified, can normal conversion coordinate.Because platform vehicle is more, and upload
The frequency of coordinate is big, carries out the serious operating characteristics that have impact on platform of Coordinate Conversion by outer net in real time.
Because the vehicle on platform is main in national major highways, urban district sections of road, many vehicles are all past in same section
Multiple traveling, most Coordinate Conversion occurs in that repetition, or position quite close on.This is using the seat with reference significance
The offset operational that mark and its offset data are carried out to the coordinate near it in precision permission is provided may.
The content of the invention
The invention aims to solve existing recorder management platform without deviant caching function, work as reception
To coordinate data amount it is larger when have a strong impact on the shortcoming of platform operations performance, and propose a kind of based on recorder management platform
Accelerate coordinate transformation method and device.
According to the first aspect of the invention there is provided a kind of KEY value calculating methods based on recorder management platform, bag
Include：
Step one：Obtain pending geographical coordinate；
Step 2：The geographical coordinate is converted into two-dimentional rectangular co-ordinate；
Step 3：According to given precision, mesh generation is carried out to coordinate system where two-dimentional rectangular co-ordinate；
Step 4：The southwestern point coordinates of grid where solving the two-dimentional rectangular co-ordinate；
Step 5：The abscissa and ordinate of the southwestern point coordinates are combined and to form character string, by the character string
It is used as KEY values；Coordinate of the KEY values for characterizing the grid at pending geographical coordinate.
According to the second aspect of the invention there is provided a kind of KEY value calculation apparatus based on recorder management platform, bag
Include：
Geographical coordinate acquisition module, the pending geographical coordinate for obtaining；
Rectangular co-ordinate modular converter, for the geographical coordinate to be converted into two-dimentional rectangular co-ordinate；
Mesh generation module, for according to given precision, mesh generation to be carried out to coordinate system where two-dimentional rectangular co-ordinate；
Mesh coordinate solves module, the southwestern point coordinates of grid where for solving the two-dimentional rectangular co-ordinate；
KEY value generation modules, will for combining to form character string the abscissa and ordinate of the southwestern point coordinates
The character string is used as KEY values；Coordinate of the KEY values for characterizing the grid at pending geographical coordinate.
Beneficial effects of the present invention are：1st, the present invention generates a KEY in precision tolerance band according to true coordinate value
Value, KEY values can be buffered in local service wherein, when other coordinates in the accuracy rating, it is necessary to when carrying out Coordinate Conversion,
The buffered results can be used to carry out coordinate offset computing, carry out the performance of lifting system map denotation.2nd, find in the buffer
During matching value, the speed for producing coordinate offset data is very fast, in embodiment, and the present invention is compared to existing recorder platform
Nearly 1000 times of speed lifting；3rd, the service fee produced by the data, services that excessive use Ministry of Communications provides can be reduced；4th, may be used
Reduction system uses outer net resource, improves the stability of system data conversion.
Brief description of the drawings
Fig. 1 is the flow chart of the KEY value calculating methods based on recorder management platform of the present invention；
Fig. 2 is the principle assumption diagram of the KEY value calculation apparatus based on recorder management platform of the present invention.
Embodiment
Embodiment one：KEY value calculating methods such as Fig. 1 institutes based on recorder management platform of present embodiment
Show, including：
Step one：Obtain pending geographical coordinate.
Step 2：The geographical coordinate is converted into two-dimentional rectangular co-ordinate.The unit of geographical coordinate is degree, and two-dimentional right angle is sat
Target unit for centimetre.
For example, using meridian by equator point as origin, longitude is abscissa, and latitude is ordinate, and east longitude, north latitude are
Just, set up coordinate system, then east longitude on sphere, the two-dimentional rectangular co-ordinate of the every bit in north latitude region computational methods such as
Under, unit rice.
Abscissa：X=R* (lng*cos (lat*PI/180) * PI/180)
Ordinate：Y=R* (lat*PI/180)
Wherein, R is earth radius, and lng is longitude, and lat is latitude.
Step 3：According to given precision, mesh generation is carried out to coordinate system where two-dimentional rectangular co-ordinate.I.e. each is sat
Mark is each fallen within a grid.
Step 4：The southwestern point coordinates of grid where solving the two-dimentional rectangular co-ordinate.
Step 5：The abscissa and ordinate of the southwestern point coordinates are combined and to form character string, by the character string
It is used as KEY values.
For example, according to given accuracy, being segmented to horizontal (vertical) coordinate, each section of coordinate is all the grid of the precision
Coordinate, then horizontal (vertical) coordinate of distance recently and less than horizontal (vertical) coordinate grid coordinates be exactly the coordinate points the grid fallen into seat
Mark.The abscissa dx and ordinate dy of grid computational methods are as follows：
Dx=int (x/d) × d
Dy=int (y/d) × d
Wherein int represents to round, and d is the precision of mesh generation.
Then dx and dy are combined as character string as KEY values, i.e. KEY=dx_dy.
Embodiment two：Present embodiment present embodiment from unlike embodiment one：Methods described
Also include step 6：Search whether there is the value matched with the KEY values in the buffer；If in the presence of according to what is found
Value determines corresponding deviant, and calculates offset coordinates；If being not present, sat by KEY values correspondence described in Network Capture
Target offset coordinates, and calculate the deviant storage of offset coordinates in the buffer.
When being present in the value that KEY values match, step 6 specifically includes following steps：
Step A1：Obtain KEY values.
Step A2：Obtain offset corresponding with the KEY values.
Step A3：Calculate the rectangular co-ordinate of the KEY values respective coordinates.Here rectangular co-ordinate is by the character of KEY values
The transverse and longitudinal coordinate that string is split into, it represents the coordinate of grid.
Step A4：The rectangular co-ordinate is converted into geographical coordinate, offset coordinates are used as.
When being not present in value that the KEY values match, step 6 specifically includes following steps：
Step B1：Pass through the offset coordinates of Network Capture KEY value respective coordinates；
Step B2：The corresponding coordinate of KEY values and offset coordinates are converted into two-dimentional rectangular co-ordinate；
Step B3：Taken after the two-dimentional right angle abscissa of offset coordinates is subtracted into the two-dimentional right angle abscissa of KEY respective coordinates
It is whole, it is used as the abscissa of offset；The vertical seat in two-dimentional right angle that the two-dimentional right angle ordinate of offset coordinates is subtracted into KEY respective coordinates
Rounded after mark, be used as the ordinate of offset.
Embodiment three：Present embodiments provide for a kind of KEY value calculation apparatus based on recorder management platform,
As shown in Fig. 2 including：
Geographical coordinate acquisition module 101, the pending geographical coordinate for obtaining.
Rectangular co-ordinate modular converter 102, for the geographical coordinate to be converted into two-dimentional rectangular co-ordinate.
Mesh generation module 103, for according to given precision, carrying out grid to coordinate system where two-dimentional rectangular co-ordinate and drawing
Point.
Mesh coordinate solves module 104, the southwestern point coordinates of grid where for solving the two-dimentional rectangular co-ordinate.
KEY values generation module 105, for combining and to form character the abscissa and ordinate of the southwestern point coordinates
String, regard the character string as KEY values.
Present embodiment is the corresponding software service of embodiment one, is not detailed herein.
Embodiment four：Present embodiment from unlike embodiment three：
The device of the present invention also includes cache lookup module 106, for searching whether exist and the KEY values in the buffer
The value matched；If in the presence of to offset coordinates computing module 106A transmission execution signals；It is slow to deviant if being not present
Storing module 106B, which is sent, performs signal.
Offset coordinates computing module 106A, for after execution signal is received, it to be right with it to be determined according to the value found
The deviant answered, and calculate offset coordinates.
Deviant cache module 106B, sits for after execution signal is received, passing through KEY values correspondence described in Network Capture
Target offset coordinates, and calculate the deviant storage of offset coordinates in the buffer.
Offset coordinates computing module 106A includes：
KEY value acquiring units, for obtaining KEY values.
Offset acquiring unit, for obtaining offset corresponding with the KEY values.
First rectangular co-ordinate computing unit, the rectangular co-ordinate for calculating the KEY values respective coordinates.
Offset coordinates computing unit, for the rectangular co-ordinate to be converted into geographical coordinate, is used as offset coordinates.
Deviant cache module 106B includes：
Offset coordinates acquiring unit, for the offset coordinates by Network Capture KEY value respective coordinates.
Second rectangular co-ordinate acquiring unit, for the corresponding coordinate of KEY values and offset coordinates to be converted into two-dimentional right angle
Coordinate.
Offset computation unit, the two dimension for the two-dimentional right angle abscissa of offset coordinates to be subtracted to KEY respective coordinates is straight
Rounded after the abscissa of angle, be used as the abscissa of offset；The two-dimentional right angle ordinate of offset coordinates is subtracted into KEY respective coordinates
Rounded after two-dimentional right angle ordinate, be used as the ordinate of offset.
Present embodiment is the corresponding software service of embodiment two, is not detailed herein.
Other steps and parameter are identical with embodiment three.
Below according to following test process, to illustrate beneficial effects of the present invention.
1) test environment (PC)：
Processor：Intel(R)Core(TM)2Duo CPU E7500@2.93GHz 2.94GHz
Internal memory：4GB
Operating system：64 windows7
Java context：jkd1.8.0_51
2) code is tested：
3) test result
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.ht.test.TestGisPix
100000 609 milliseconds of coordinate used times
Tests run:2,Failures:0,Errors:0,Skipped:0,Time elapsed:0.687sec。
The present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, this area
Technical staff works as can make various corresponding changes and deformation according to the present invention, but these corresponding changes and deformation should all belong to
The protection domain of appended claims of the invention.
Claims (4)
1. a kind of KEY value calculating methods based on recorder management platform, it is characterised in that including：
Step one：Obtain pending geographical coordinate；
Step 2：The geographical coordinate is converted into two-dimentional rectangular co-ordinate；
Step 3：According to given precision, mesh generation is carried out to coordinate system where two-dimentional rectangular co-ordinate；
Step 4：The southwestern point coordinates of grid where solving the two-dimentional rectangular co-ordinate；
Step 5：The abscissa and ordinate of the southwestern point coordinates are combined and to form character string, using the character string as
KEY values；Coordinate of the KEY values for characterizing the grid at pending geographical coordinate.
2. the KEY value calculating methods according to claim 1 based on recorder management platform, it is characterised in that also include：
Step 6：Search whether there is the value matched with the KEY values in the buffer；If in the presence of according to the value found
Corresponding deviant is determined, and calculates offset coordinates；If being not present, pass through KEY values respective coordinates described in Network Capture
Offset coordinates, and calculate offset coordinates deviant storage in the buffer；
When being present in the value that the KEY values match, step 6 specifically includes following steps：
Step A1：Obtain KEY values；
Step A2：Obtain offset corresponding with the KEY values；
Step A3：Calculate the rectangular co-ordinate of the KEY values respective coordinates；
Step A4：The rectangular co-ordinate is converted into geographical coordinate, offset coordinates are used as；
When being not present in value that the KEY values match, step 6 specifically includes following steps：
Step B1：Pass through the offset coordinates of Network Capture KEY value respective coordinates；
Step B2：The corresponding coordinate of KEY values and offset coordinates are converted into two-dimentional rectangular co-ordinate；
Step B3：Round, make after the two-dimentional right angle abscissa of offset coordinates is subtracted into the two-dimentional right angle abscissa of KEY respective coordinates
For the abscissa of offset；After the two-dimentional right angle ordinate that the two-dimentional right angle ordinate of offset coordinates is subtracted to KEY respective coordinates
Round, be used as the ordinate of offset.
3. a kind of KEY value calculation apparatus based on recorder management platform, it is characterised in that including：
Geographical coordinate acquisition module, the pending geographical coordinate for obtaining；
Rectangular co-ordinate modular converter, for the geographical coordinate to be converted into two-dimentional rectangular co-ordinate；
Mesh generation module, for according to given precision, mesh generation to be carried out to coordinate system where two-dimentional rectangular co-ordinate；
Mesh coordinate solves module, the southwestern point coordinates of grid where for solving the two-dimentional rectangular co-ordinate；
KEY value generation modules, will be described for combining to form character string the abscissa and ordinate of the southwestern point coordinates
Character string is used as KEY values；Coordinate of the KEY values for characterizing the grid at pending geographical coordinate.
4. the KEY value calculation apparatus according to claim 3 based on recorder management platform, it is characterised in that also include：
Cache lookup module, for searching whether there is the value matched with the KEY values in the buffer；If in the presence of to inclined
Move coordinate calculation module and send execution signal, to calculate the offset coordinates matched with KEY values；If being not present, to skew
Value cache module sends execution signal, is cached obtained deviant is calculated by KEY values；
The offset coordinates computing module includes：
KEY value acquiring units, for obtaining KEY values；
Offset acquiring unit, for obtaining offset corresponding with the KEY values；
First rectangular co-ordinate computing unit, the rectangular co-ordinate for calculating the KEY values respective coordinates；
Offset coordinates computing unit, for the rectangular co-ordinate to be converted into geographical coordinate, is used as offset coordinates；
The deviant cache module includes：
Offset coordinates acquiring unit, for the offset coordinates by Network Capture KEY value respective coordinates；
Second rectangular co-ordinate acquiring unit, for the corresponding coordinate of KEY values and offset coordinates to be converted into two-dimentional rectangular co-ordinate；
Offset computation unit, the two-dimentional right angle for the two-dimentional right angle abscissa of offset coordinates to be subtracted to KEY respective coordinates is horizontal
Rounded after coordinate, be used as the abscissa of offset；The two-dimentional right angle ordinate of offset coordinates is subtracted into the two dimension of KEY respective coordinates
Rounded after right angle ordinate, be used as the ordinate of offset.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510778A (en) * | 2018-04-11 | 2018-09-07 | 航天科技控股集团股份有限公司 | A kind of implementation method of the vehicle polymerization display based on recorder management platform |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050483A1 (en) * | 2003-10-24 | 2005-06-02 | The Real Estate Cable Network, Inc. | Integrated information processing system for geospatial media |
| CN104619014A (en) * | 2015-01-09 | 2015-05-13 | 中山大学 | SVM-KNN (Support Vector Machine-K Nearest Neighbor)-based indoor positioning method |
| CN106407213A (en) * | 2015-07-31 | 2017-02-15 | 阿里巴巴集团控股有限公司 | Geographic position-based information retrieval method, device and system |
-
2017
- 2017-04-26 CN CN201710283278.8A patent/CN107066606B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005050483A1 (en) * | 2003-10-24 | 2005-06-02 | The Real Estate Cable Network, Inc. | Integrated information processing system for geospatial media |
| CN104619014A (en) * | 2015-01-09 | 2015-05-13 | 中山大学 | SVM-KNN (Support Vector Machine-K Nearest Neighbor)-based indoor positioning method |
| CN106407213A (en) * | 2015-07-31 | 2017-02-15 | 阿里巴巴集团控股有限公司 | Geographic position-based information retrieval method, device and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510778A (en) * | 2018-04-11 | 2018-09-07 | 航天科技控股集团股份有限公司 | A kind of implementation method of the vehicle polymerization display based on recorder management platform |
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