CN109800281A - The method of the positional relationship of Query Location point and fence in positioning system - Google Patents
The method of the positional relationship of Query Location point and fence in positioning system Download PDFInfo
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- CN109800281A CN109800281A CN201910057911.0A CN201910057911A CN109800281A CN 109800281 A CN109800281 A CN 109800281A CN 201910057911 A CN201910057911 A CN 201910057911A CN 109800281 A CN109800281 A CN 109800281A
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Abstract
The method for the positional relationship of Query Location point and fence that the present invention provides a kind of in positioning system, time complexity is low, it is not influenced by the quantity of fence, the positional relationship of positioning body and fence can be quickly obtained in the large numbers of situations of fence.The following steps are included: carrying out gridding processing to plane map, serial number is carried out to grid；Establish fence；Coordinate system is established on plane map；Label is carried out to fence；The grid number that each fence is included is counted, the number of fence belonging to each grid is obtained；Pass through the coordinate of anchor point, obtain the corresponding grid number of anchor point, the number of fence belonging to anchor point is obtained, the positional relationship of anchor point and fence is obtained, can be used in the quantity for showing anchor point in region representated by fence in positioning system.
Description
Technical field
The present invention relates to location systems art fields, and in particular to Query Location point and fence in positioning system
The method of positional relationship.
Background technique
With the continuous development of informationization technology, indoor positioning enters in fields such as factory, medical treatment, office, markets
High speed development stage.Based on Indoor Location Information application in, Query Location main body which/which regional scope in be
Very basic and important function, have this function can in the place of real-time display each region positioning body quantity.
Prior art is to calculate some positioning by indicating regional scope using plane irregularity polygon
When which fence is main body belong to, each fence under current building is calculated it is primary, if the location point of main body is indicated in fence
Polygon in then indicate in this region.Due to needing to be traversed for all fences, calculated one by one, the time calculated is multiple
Miscellaneous degree is O (n), and n indicates fence quantity, and performance is excessively poor in the large numbers of situations of fence.The performance magnitude of scheme is ten thousand
Grade is to 100,000 grades, i.e., per second to calculate tens of thousands of to hundreds of thousands time, specific value is related with hardware resource and polygon points；It
It can solve the demand under small scene, small complications, but much reached not for the then performance under the conditions of large scene, high concurrent
To requirement, for example, it is per second need to calculate 10,000,000 times in the case where, existing scheme needs tens of servers that could provide this
Big computing capability.
Summary of the invention
The present invention is intended to provide a kind of method of the positional relationship of point of the Query Location in positioning system and fence,
Time complexity is low, is not influenced by the quantity of fence, and positioning master can be quickly obtained in the large numbers of situations of fence
The positional relationship of body and fence.
Its technical solution is such that a kind of side of the positional relationship of the point of the Query Location in positioning system and fence
Method, which comprises the following steps:
Step S1: establishing coordinate system on plane map, using a corner of plane map as the origin of coordinate system, with
The transverse direction of plane map is as X-direction, using the longitudinal direction of plane map as y-axis direction；
Step S2: gridding processing is carried out to plane map, plane map is divided into several square nets；
Step S3: since coordinate origin, serial number is carried out to grid along the sequence of Y-axis again along X-axis by elder generation；
Step S4: fence information is obtained, fence is established on plane map according to fence information；
Step S5: label is carried out to fence；
Step S6: the grid number that each fence is included is counted, the number of fence belonging to each grid is obtained；
Step S7: by the coordinate of anchor point, the corresponding grid number of anchor point is obtained, electronics belonging to anchor point is obtained
Fence number, obtains the positional relationship of anchor point and fence, can be used in showing fence institute's generation in positioning system
The quantity of anchor point in the region of table.
Further, step S6 execution specific as follows: each apex coordinate of each fence is obtained；
One coordinate points of composition of the smallest x-axis coordinate and the smallest y-axis coordinate composition in its apex coordinate are taken, then will
The abscissa and ordinate of the coordinate points take the integral multiple of side length of element separately down, obtain coordinate points minP (Xmin, Ymin),
The abscissa Xmin and ordinate Ymin of coordinate points minP are respectively the integral multiple of side length of element；
Take maximum x-axis coordinate and maximum y-axis coordinate to form a coordinate points, then by the abscissa of the coordinate points and
Ordinate takes the integral multiple of side length of element upwards respectively, obtains coordinate points maxP (Xmax, Ymax), the abscissa of coordinate points maxP
Xmax and ordinate Ymax is respectively the integral multiple of side length of element；
It is diagonally obtained with coordinate points minP (Xmin, Ymin) and coordinate points maxP (Xmax, Ymax) as a pair of rectangle
One rectangular area traverses in rectangular area and arrives institute in coordinate points maxP (Xmax, Ymax) from coordinate points minP (Xmin, Ymin)
There is the central point of grid, and calculates grid element center point whether in fence, if in fence, by the volume of the grid
Number it is added in the grid numbered list that the fence is included, is net by the Data Representation of the relationship of fence and grid
Lattice array, each element of grid array respectively represent the number of fence belonging to a grid.
Further, step S7 execution specific as follows: the coordinate of anchor point (x1, y1) is obtained；
Calculate corresponding grid number according to the coordinate of anchor point (x1, y1), respectively with the abscissa x1 of anchor point and
Ordinate y1 is obtained carrying out rounding operation respectively, is indicated as follows divided by the side length of grid:
Rx=int (x1/a)
Ry=int (y1/a)
Wherein, a is the side length of grid；The corresponding grid number gridNum of anchor point (x1, y1) is indicated as follows:
GridNum=(ry*rowLen)+rx+1
Wherein, rowLen is the grid number of every row；It is index with grid number gridNum, it is fixed that inquiry grid array obtains
Fence numbered list belonging to site (x1, y1).
Further, using the upper left corner of plane map as the origin of coordinate system, in the transverse direction of plane map, from left-hand
It is right to be used as X-direction, on the longitudinal direction of plane map, it is used as y-axis direction from top to bottom.
The present invention is in the current affiliated area of calculating anchor point, it is only necessary to calculate corresponding grid according to the position of anchor point
It numbers and then goes in pretreated list to inquire, the time complexity of this programme is (1) O, it is not related with fence quantity,
Single server fence, which calculates the frequency, can achieve the order of magnitude of 10 6 powers multiplied by fence quantity, far super existing scheme；Fence
Quantity is more, and this programme performance advantage is more obvious.
Detailed description of the invention
Fig. 1 is the schematic diagram after the foundation of the coordinate system in the embodiment of the present invention；
Fig. 2 is the schematic diagram in the embodiment of the present invention after plane map gridding；
Fig. 3 is the schematic diagram for the fence that the number in the embodiment of the present invention is 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
A kind of method of the positional relationship of of the invention point of the Query Location in positioning system and fence, including it is following
Step: step S1: establishing coordinate system on plane map, using a corner of plane map as the origin of coordinate system, with flat
The transverse direction of face map is as X-direction, using the longitudinal direction of plane map as y-axis direction；
Step S2: gridding processing is carried out to plane map, plane map is divided into several square nets；
Step S3: since coordinate origin, serial number is carried out to grid along the sequence of Y-axis again along X-axis by elder generation；
Step S4: fence information is obtained, fence is established on plane map according to fence information；
Step S5: label is carried out to fence；
Step S6: each apex coordinate of each fence is obtained；
One coordinate points of composition of the smallest x-axis coordinate and the smallest y-axis coordinate composition in its apex coordinate are taken, then will
The abscissa and ordinate of the coordinate points take the integral multiple of side length of element separately down, obtain coordinate points minP (Xmin, Ymin),
The abscissa Xmin and ordinate Ymin of coordinate points minP are respectively the integral multiple of side length of element；
Take maximum x-axis coordinate and maximum y-axis coordinate to form a coordinate points, then by the abscissa of the coordinate points and
Ordinate takes the integral multiple of side length of element upwards respectively, obtains coordinate points maxP (Xmax, Ymax), the abscissa of coordinate points maxP
Xmax and ordinate Ymax is respectively the integral multiple of side length of element；
It is diagonally obtained with coordinate points minP (Xmin, Ymin) and coordinate points maxP (Xmax, Ymax) as a pair of rectangle
One rectangular area traverses in rectangular area and arrives institute in coordinate points maxP (Xmax, Ymax) from coordinate points minP (Xmin, Ymin)
There is the central point of grid, and calculates grid element center point whether in fence, if in fence, by the volume of the grid
Number it is added in the grid numbered list that the fence is included, is net by the Data Representation of the relationship of fence and grid
Lattice array, each element of grid array respectively represent the number of fence belonging to a grid.；
Step S7: the coordinate of anchor point (x1, y1) is obtained；
Calculate corresponding grid number according to the coordinate of anchor point (x1, y1), respectively with the abscissa x1 of anchor point and
Ordinate y1 is obtained carrying out rounding operation respectively, is indicated as follows divided by the side length of grid:
Rx=int (x1/a)
Ry=int (y1/a)
Wherein, a is the side length of grid；The corresponding grid number gridNum of anchor point (x1, y1) is indicated as follows:
GridNum=(ry*rowLen)+rx+1
Wherein, rowLen is the grid number of every row；It is index with grid number gridNum, it is fixed that inquiry grid array obtains
Fence numbered list belonging to site (x1, y1), obtains the positional relationship of anchor point and fence, can be used in positioning system
The quantity of anchor point in region representated by fence is shown in system.
A specific implementation case is given below and illustrates the point of the Query Location in positioning system and fence of the invention
The method of positional relationship.
See Fig. 1, the region in Fig. 1 is 20 meters of length, and wide 16 meters of region positions it, and real-time display is each fixed
Site region information.
Coordinate system is established to plane map, the upper left corner is (0,0) origin, is from left to right x-axis, is from top to bottom y-axis；
Plane map is subjected to gridding processing, and is numbered, one net of polishing if the grid of less than one, end
Lattice, sizing grid 1m*1m, while recording every row and have 20 grids, rowLen is denoted as 20；See Fig. 2, shares 320 grids.
See Fig. 3, has the fence that a number is 1 in the region, the fence that number is 1 is an irregular polygon, is obtained
Take composition one seat that per its each apex coordinate, x-axis coordinate the smallest in its apex coordinate and the smallest y-axis coordinate are formed
Punctuate, coordinate are (3.8,1.0), then the abscissa of the coordinate points and ordinate are taken to the integer of side length of element separately down
Times, coordinate points minP is obtained, the coordinate of minP is (3.0,1.0), and maximum x-axis coordinate and maximum y-axis coordinate is taken to form one
A coordinate points, coordinate are (11.1,8.7), and then the abscissa of the coordinate points and ordinate round up side length of element respectively
Integral multiple, obtain coordinate points maxP, the coordinate of maxP is (12.0,9.0), using coordinate points minP and coordinate points maxP as square
A pair of shape diagonally obtains a rectangular area；
The central point of all grids from coordinate points minP to coordinate points maxP in rectangular area is traversed, and is calculated in grid
Whether heart point is in fence, if the number of the grid, which is added to the fence, is included in fence
In grid numbered list, as grid number that the number is 1 in the following figure fence includes is [28,47,48,66,67,68,69,
86,87,88,89,105,106,107,108,109,110,125,126,127,128,129,130,146,147,148,149,
150,166,167,168,169,170,171,187]；It is grid array by the Data Representation of the relationship of fence and grid,
Each element of grid array respectively represents the number of fence belonging to a grid；
After positioning body produces new anchor point (x1, y1), the fence area where it is inquired, according to anchor point
The coordinate of (x1, y1) calculates corresponding grid number, respectively with the abscissa x1 and ordinate y1 of anchor point divided by grid
Side length is obtained carrying out rounding operation respectively, is indicated as follows:
Rx=int (x1/a)
Ry=int (y1/a)
Wherein, a is the side length of grid；The corresponding grid number gridNum of anchor point (x1, y1) is indicated as follows:
GridNum=(ry*rowLen)+rx+1
Wherein, rowLen is the grid number of every row；It is index with grid number gridNum, it is fixed that inquiry grid array obtains
Fence numbered list belonging to site (x1, y1), obtains the positional relationship of anchor point and fence, can be used in positioning system
The quantity of anchor point in region representated by fence is shown in system.
The present invention is in the current affiliated area of calculating anchor point, it is only necessary to calculate corresponding grid according to the position of anchor point
It numbers and then goes in pretreated list to inquire, the time complexity of this programme is (1) O, it is not related with fence quantity,
Single server fence, which calculates the frequency, can achieve the order of magnitude of 10 6 powers multiplied by fence quantity, far super existing scheme；Fence
Quantity is more, and this programme performance advantage is more obvious.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (4)
1. a kind of method of the positional relationship of point of the Query Location in positioning system and fence, which is characterized in that including with
Lower step:
Step S1: establishing coordinate system on plane map, using a corner of plane map as the origin of coordinate system, with plane
The transverse direction of map is as X-direction, using the longitudinal direction of plane map as y-axis direction；
Step S2: gridding processing is carried out to plane map, plane map is divided into several square nets；
Step S3: since coordinate origin, serial number is carried out to grid along the sequence of Y-axis again along X-axis by elder generation；
Step S4: fence information is obtained, fence is established on plane map according to fence information；
Step S5: label is carried out to fence；
Step S6: the grid number that each fence is included is counted, the number of fence belonging to each grid is obtained；
Step S7: by the coordinate of anchor point, the corresponding grid number of anchor point is obtained, fence belonging to anchor point is obtained
Number, obtains the positional relationship of anchor point and fence, can be used in showing representated by fence in positioning system
The quantity of anchor point in region.
2. the side of the positional relationship of a kind of point of the Query Location in positioning system according to claim 1 and fence
Method, which is characterized in that step S6 execution specific as follows:
Obtain each apex coordinate of each fence；
One coordinate points of composition for taking the smallest x-axis coordinate and the smallest y-axis coordinate composition in its apex coordinate, then by the seat
The abscissa and ordinate of punctuate take the integral multiple of side length of element separately down, obtain coordinate points minP (Xmin, Ymin), coordinate
The abscissa Xmin and ordinate Ymin of point minP are respectively the integral multiple of side length of element；
Maximum x-axis coordinate and maximum y-axis coordinate is taken to form a coordinate points, then by the abscissa of the coordinate points and vertical seat
Mark takes the integral multiple of side length of element upwards respectively, obtains coordinate points maxP (Xmax, Ymax), the abscissa Xmax of coordinate points maxP
It is respectively the integral multiple of side length of element with ordinate Ymax；
One is diagonally obtained as a pair of rectangle with coordinate points minP (Xmin, Ymin) and coordinate points maxP (Xmax, Ymax)
Rectangular area traverses in rectangular area and arrives all nets in coordinate points maxP (Xmax, Ymax) from coordinate points minP (Xmin, Ymin)
Center of a lattice point, and grid element center point is calculated whether in fence, if the number of the grid is added in fence
It is added in the grid numbered list that the fence is included, is grid number by the Data Representation of the relationship of fence and grid
Group, each element of grid array respectively represent the number of fence belonging to a grid.
3. a kind of method of the positional relationship of the point of the Query Location in positioning system and fence stated according to claim 2,
It is characterized in that, step S7 execution specific as follows: obtaining the coordinate of anchor point (x1, y1)；
Corresponding grid number is calculated according to the coordinate of anchor point (x1, y1), respectively with the abscissa x1 of anchor point and vertical seat
Y1 is marked divided by the side length of grid, obtains carrying out rounding operation respectively, indicates as follows:
Rx=int (x1/a)
Ry=int (y1/a)
Wherein, a is the side length of grid；The corresponding grid number gridNum of anchor point (x1, y1) is indicated as follows:
GridNum=(ry*rowLen)+rx+1
Wherein, rowLen is the grid number of every row；It is index with grid number gridNum, inquiry grid array obtains anchor point
Fence numbered list belonging to (x1, y1).
4. a kind of method of the positional relationship of the point of the Query Location in positioning system and fence stated according to claim 1,
It is characterized in that, using the upper left corner of plane map as the origin of coordinate system, in the transverse direction of plane map, conduct from left to right
X-direction on the longitudinal direction of plane map, is used as y-axis direction from top to bottom.
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Cited By (8)
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| CN110515942A (en) * | 2019-07-12 | 2019-11-29 | 同济大学 | A kind of storage and search method serializing lane line map |
| CN111078812A (en) * | 2019-12-03 | 2020-04-28 | 支付宝(杭州)信息技术有限公司 | Fence generation method and device and electronic equipment |
| CN111323025A (en) * | 2020-02-25 | 2020-06-23 | 北京首汽智行科技有限公司 | Coordinate judgment method based on GeoHash algorithm |
| CN111951089A (en) * | 2020-08-05 | 2020-11-17 | 中国工商银行股份有限公司 | House checking method and device |
| CN112596460A (en) * | 2020-12-16 | 2021-04-02 | 读书郎教育科技有限公司 | Method for quickly positioning material for servo/step-by-step driving motion system |
| CN114222249A (en) * | 2021-12-15 | 2022-03-22 | 四川科瑞软件有限责任公司 | Electronic fence monitoring method and system based on geographic position |
| CN115311840A (en) * | 2022-10-12 | 2022-11-08 | 深圳海星智驾科技有限公司 | Vehicle early warning method and device of electronic fence, electronic equipment and storage medium |
| CN115330270A (en) * | 2022-10-12 | 2022-11-11 | 太极计算机股份有限公司 | Target user risk judgment method and device, electronic device and storage medium |
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Cited By (10)
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| CN110515942A (en) * | 2019-07-12 | 2019-11-29 | 同济大学 | A kind of storage and search method serializing lane line map |
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| CN111951089A (en) * | 2020-08-05 | 2020-11-17 | 中国工商银行股份有限公司 | House checking method and device |
| CN112596460A (en) * | 2020-12-16 | 2021-04-02 | 读书郎教育科技有限公司 | Method for quickly positioning material for servo/step-by-step driving motion system |
| CN114222249A (en) * | 2021-12-15 | 2022-03-22 | 四川科瑞软件有限责任公司 | Electronic fence monitoring method and system based on geographic position |
| CN115311840A (en) * | 2022-10-12 | 2022-11-08 | 深圳海星智驾科技有限公司 | Vehicle early warning method and device of electronic fence, electronic equipment and storage medium |
| CN115330270A (en) * | 2022-10-12 | 2022-11-11 | 太极计算机股份有限公司 | Target user risk judgment method and device, electronic device and storage medium |
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