CN105913365A - Environment monitoring GIS information transmission unit - Google Patents
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- CN105913365A CN105913365A CN201610218561.8A CN201610218561A CN105913365A CN 105913365 A CN105913365 A CN 105913365A CN 201610218561 A CN201610218561 A CN 201610218561A CN 105913365 A CN105913365 A CN 105913365A
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- 230000007613 environmental effect Effects 0.000 claims description 39
- 230000006835 compression Effects 0.000 claims description 11
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Abstract
To improve transmission efficiency of GIS information relevant to environment monitoring application, the invention provides a remote environment monitoring system which comprises an environment monitoring unit which is arranged on an environment monitoring spot and used for monitoring environment parameters, a data communication unit which is arranged at the environment monitoring unit and used for transmitting the environment parameters to a server, and the server used for receiving data from the data communication unit and processing the data and GIS map data, wherein the server comprises an environment monitoring GIS information transmission unit which is used for transmitting environment monitoring GIS information to a mobile monitoring end. According to the remote environment monitoring system, pertinent consideration is given to strong random property and slow change of environment monitoring GIS information; compared with other conventional GIS information transmission methods, the remote environment monitoring system is advantageous in that GIS information coding efficiency can be improved, and experience of users of a WebGIS-based environment monitoring mobile end can be enhanced.
Description
Technical field
The present invention relates to environmental monitoring technology field, pass more particularly, to a kind of environmental monitoring GIS information
Defeated unit.
Background technology
Controlling and reduce the harm that sudden pollusion atmospheric event causes, an effective method is to utilize ground
Reason information system (Geographical Information System, GIS) is monitored, analyzes and comments
Estimate, to take effective emergency measure and renovation scheme, and provide early warning when necessary.At the beginning of GIS develops
Phase, it is only applicable to C/S structure (client/server) framework, user or supervisor needs in service
Special application program is installed on the equipment such as device can realize and the communication interface of each GIS information providing.
Once vary to certain without installing on the computer of corresponding GIS application program or server, GIS cannot be used
Corresponding monitoring, analyze and evaluation function, this brings the inconvenience in use to long-range user or supervisor.
The nineties in 20th century, along with the development of Internet technology, the Internet is that GIS-Geographic Information System provides newly
Operating platform, the Internet is combined with GIS-Geographic Information System, develops into WebGIS.The generation of WebGIS changes
Having become means and mode that spatial geographic information is obtained, shares, issues and analyzes by people, people are permissible
Directly browse and obtain various geographical spatial data, image, file by Internet and carry out geographical space
Analyzing, WebGIS is this provides hypermedia, interactive mode, the side of distributed geodata by network to people
Formula, is not available for traditional GIS.
Although the network insertion bandwidth that people use is increasing, but need information category and the data of monitoring
Measure the most increasing.This constantly proposes new, increasingly for the GIS developer in environmental monitoring field
High requirement, the most desirably realizes user and uses the smart machine such as smart mobile phone, panel computer also to be able to
Remote access environment monitoring GIS information rapidly.
Summary of the invention
In order to improve the efficiency of transmission of the relevant GIS information of environmental monitoring application, the invention provides a kind of confession
Mobile monitoring end carries out the remote environment-monitoring monitoring system of environmental monitoring, including:
Environmental monitoring unit, it is arranged at environmental monitoring sites and for monitoring of environmental parameter；
Data communication units, it is arranged at described environmental monitoring unit and for described ambient parameter being transferred to
Server；
Server, from the data of data communication units and processes these data and GIS map for reception
Data, wherein, described server includes environmental monitoring GIS information transmission unit, and it is for mobile monitoring
End transmission environment monitoring GIS information.
Further, described environmental monitoring GIS information transmission unit includes:
Blocking unit, for carrying out piecemeal to GIS data information；
Coding unit, for calculating the property value of each described piece, and encodes described each piece accordingly；
Compression transmission unit, for being compressed transmitting to data based on this coding.
Further, described blocking unit includes:
Map datum obtains subelement, for obtaining the vector data of GIS map；
Divide subelement, for judging each environmental monitoring sites in described GIS map region according to predetermined threshold value
Data whether abnormal, and according to the vector data piecemeal to described GIS map of the degree beyond predetermined threshold value；
Mark subelement, for marking described each piece with gray value, this gray value is with the shape of the first attribute information
Formula is attached in described vector data.
Further, described coding unit includes:
Variance yields computation subunit, for according to described first attribute information, to described vector data according to
The block that the gray value of the first attribute information is corresponding is ranked up, and obtains arranging from big to small according to the first attribute information
Multiple pieces of B1, B2, B3 of row ..., Bn, and the meansigma methods of gray value based on described first attribute information
Calculate each block variance yields C1, C2, C3 relative to the gray value of the first attribute information ..., Cn；
First vector data computation subunit, for the vector data of computing block B1, as the first vector data；
Second vector data computation subunit, for each block described, accordingly with its respective variance
Value C1, C2, C3 ..., Cn is radius, does regular hexagon centered by its geometric center, and for finally
The frequency soprano that each piece of corresponding regular hexagon in described GIS map region overlaps, calculates this block
The vector data of corresponding GIS map subregion, as the second vector data；
3rd vector data computation subunit, for obtaining for cutting the area of lap after above-mentioned overlap
The vector data of GIS map subregion corresponding to the maximum block of residual area, as the 3rd vector data；
Euclidean distance computation subunit, for calculating geometric center and the 3rd vector data of the second vector data
Geometric center between Euclidean distance d；
Normal vector data determine subelement, the arrow obtained divided by described Euclidean distance d for the first vector data
Amount data are as normal vector data；
Chained list sets up subelement, is used for calculating described each piece of B1, B2, B3 ..., the vector data of Bn is relative
In vector difference D1, D2, the D3 of described normal vector data ..., Dn, and be each piece described variance yields,
Described vector difference, the first property value and additional information set up chained list；
Coding information generates subelement, is used for described vector difference D1, D2, D3 ..., Dn is according to as follows
Conversion formula is changed, and obtains and described each piece of corresponding vector data (Xi, Yi) corresponding coding letter
Breath:
Further, described compression transmission unit includes:
Compression subelement, for being compressed described coding information；
Transmission subelement, for being transmitted described chained list and the coding information after overcompression.
Further, described be compressed coding information includes using following compression algorithm to be compressed: hang down
Away from limit value method or DouglasPeucker method.
Further, described be compressed coding information includes utilizing Wavelet Transform to be compressed.
Further, it is transmitted described chained list including creating corresponding chained list number according to described chained list
Group, and transmit this linked list array.
The invention has the beneficial effects as follows: the present invention considers the random of environmental monitoring GIS information targetedly
Property strong, change slow feature such that it is able to compare other GIS information transmission systems existing and improve GIS letter
Breath code efficiency, improves the Consumer's Experience of the environmental monitoring mobile terminal user of sing on web GIS.According to the present invention,
Through verification experimental verification, once generated the above-mentioned information of each piece by Web GIS service device, then due to above-mentioned information
InChange frequency or pace of change be only the change frequency of above-mentioned Euclidean distance d or pace of change
3%-8%, therefore the encoding operation for subsequent environments monitoring GIS database only needs to calculate X, Y coordinate and d
Ratio quickly and relatively accurately can will include environmental monitoring data, map GIS information, geo-location
Information etc. are transferred to the mobile client of WebGIS in interior environmental monitoring GIS information, considerably reduce fortune
Calculation amount.
Accompanying drawing explanation
Fig. 1 shows the flow chart of the environmental monitoring GIS information transferring method according to the present invention.
Fig. 2 shows the environmental monitoring GIS that the environmental monitoring GIS information transferring method according to the present invention is corresponding
Information transmission unit composition frame chart.
Fig. 3 shows the composition frame chart of the remote environment monitoring system according to the present invention.
Detailed description of the invention
As it is shown in figure 1, the environmental monitoring GIS information transferring method of the present invention is applicable to mobile monitoring end and carries out
Remote environment-monitoring, comprises the steps:
(1) GIS data information is carried out piecemeal；
(2) calculate the property value of each described piece, and accordingly described each piece is encoded；
(3) it is compressed transmitting to data based on this coding.
According to a preferred embodiment of the invention, described step (1) including:
(11) vector data of GIS map is obtained；
(12) whether the data of each environmental monitoring sites in described GIS map region are judged according to predetermined threshold value
Abnormal, and according to the vector data piecemeal to described GIS map of the degree beyond predetermined threshold value；
(13) marking described each piece with gray value, this gray value is attached to institute with the form of the first attribute information
State in vector data, i.e. as a kind of satellite information of vector data.
Described step (2) including:
(21) according to described first attribute information, to described vector data according to the ash with the first attribute information
Block corresponding to angle value is ranked up, and obtains multiple pieces of B1, the B2 arranged from big to small according to the first attribute information,
B3 ..., Bn, and each block of mean value calculation of gray value based on described first attribute information is relative to
Variance yields C1, C2, the C3 of the gray value of one attribute information ..., Cn；
(22) vector data of computing block B1, as the first vector data；
(23) to each block described, accordingly with its respective variance yields C1, C2, C3 ..., Cn is
Radius, does regular hexagon centered by its geometric center, and each in final described GIS map region
The frequency soprano that the regular hexagon that block is corresponding overlaps, calculates GIS map subregion corresponding to this block
Vector data, as the second vector data；
(24) corresponding for cutting the block of the residual area maximum that the area of lap obtains after above-mentioned overlap
The vector data of GIS map subregion, as the 3rd vector data；
(25) Europe between the geometric center of the second vector data and the geometric center of the 3rd vector data is calculated
Formula distance d；
The vector data that (26) first vector datas obtain divided by described Euclidean distance d is as normal vector number
According to；
(27) described each piece of B1, B2, B3 are calculated ..., the vector data of Bn is relative to described normal vector
Vector difference D1, D2, the D3 of data ..., Dn, and be the described variance yields of each piece, described vector difference,
First property value and additional information set up chained list；
(28) to described vector difference D1, D2, D3 ..., Dn changes according to following conversion formula,
Obtain and described each piece of corresponding vector data (Xi, Yi) corresponding coding information:
Described step (3) including:
(31) described coding information is compressed；
(32) described chained list and the coding information after overcompression are transmitted.
According to some embodiments of the present invention, above-mentioned it is compressed including using to coding information compressing calculation as follows
Method is compressed: hang down away from limit value method or DouglasPeucker method.
According to other embodiments of the present invention, described it is compressed including utilizing wavelet transformation to coding information
Method is compressed.
In above-mentioned steps (32), it is transmitted described chained list including creating correspondence therewith according to described chained list
Linked list array, and transmit this linked list array.
Accordingly, as in figure 2 it is shown, the environmental monitoring GIS information transmission unit of the present invention is applicable to mobile prison
Survey end and carry out remote environment-monitoring, including:
Blocking unit, for carrying out piecemeal to GIS data information；
Coding unit, for calculating the property value of each described piece, and encodes described each piece accordingly；
Compression transmission unit, for being compressed transmitting to data based on this coding.
According to a preferred embodiment of the invention, described blocking unit includes:
Map datum obtains subelement, for obtaining the vector data of GIS map；
Divide subelement, for judging each environmental monitoring sites in described GIS map region according to predetermined threshold value
Data whether abnormal, and according to the vector data piecemeal to described GIS map of the degree beyond predetermined threshold value；
Mark subelement, for marking described each piece with gray value, this gray value is with the shape of the first attribute information
Formula is attached in described vector data.
Described coding unit includes:
Variance yields computation subunit, for according to described first attribute information, to described vector data according to
The block that the gray value of the first attribute information is corresponding is ranked up, and obtains arranging from big to small according to the first attribute information
Multiple pieces of B1, B2, B3 of row ..., Bn, and the meansigma methods of gray value based on described first attribute information
Calculate each block variance yields C1, C2, C3 relative to the gray value of the first attribute information ..., Cn；
First vector data computation subunit, for the vector data of computing block B1, as the first vector data；
Second vector data computation subunit, for each block described, accordingly with its respective variance
Value C1, C2, C3 ..., Cn is radius, does regular hexagon centered by its geometric center, and for finally
The frequency soprano that each piece of corresponding regular hexagon in described GIS map region overlaps, calculates this block
The vector data of corresponding GIS map subregion, as the second vector data；
3rd vector data computation subunit, for obtaining for cutting the area of lap after above-mentioned overlap
The vector data of GIS map subregion corresponding to the maximum block of residual area, as the 3rd vector data；
Euclidean distance computation subunit, for calculating geometric center and the 3rd vector data of the second vector data
Geometric center between Euclidean distance d；
Normal vector data determine subelement, the arrow obtained divided by described Euclidean distance d for the first vector data
Amount data are as normal vector data；
Chained list sets up subelement, is used for calculating described each piece of B1, B2, B3 ..., the vector data of Bn is relative
In vector difference D1, D2, the D3 of described normal vector data ..., Dn, and be each piece described variance yields,
Described vector difference, the first property value and additional information set up chained list；
Coding information generates subelement, is used for described vector difference D1, D2, D3 ..., Dn is according to as follows
Conversion formula is changed, and obtains and described each piece of corresponding vector data (Xi, Yi) corresponding coding letter
Breath:
Described compression transmission unit includes:
Compression subelement, for being compressed described coding information；
Transmission subelement, for being transmitted described chained list and the coding information after overcompression.
According to some embodiments of the present invention, above-mentioned it is compressed including using to coding information compressing calculation as follows
Method is compressed: hang down away from limit value method or DouglasPeucker method.
According to other embodiments of the present invention, described it is compressed including utilizing wavelet transformation to coding information
Method is compressed.
In above-mentioned transmission subelement, it is transmitted described chained list including creating correspondence therewith according to described chained list
Linked list array, and transmit this linked list array.
As it is shown on figure 3, the remote environment-monitoring monitoring supplying mobile monitoring end to carry out environmental monitoring of the present invention is
System includes:
Environmental monitoring unit, it is arranged at environmental monitoring sites and for monitoring of environmental parameter；
Data communication units, it is arranged at described environmental monitoring unit and for described ambient parameter being transferred to
Server；
Server, from the data of data communication units and processes these data and GIS map for reception
Data, wherein, described server includes above-mentioned environmental monitoring GIS information transmission unit, and it is for movement
Monitoring side transmission environment monitoring GIS information.
Wherein, environmental monitoring unit can use water quality detection equipment, the acid gas contaminants such as COD detection
Detection equipment etc..Data communication units can select digital transmission module based on 4G or GPRS.
The narration made for presently preferred embodiments of the present invention above is the purpose for illustrating, and is not intended to limit this
Invention is accurately disclosed form, repaiies based on above teaching or from embodiments of the invention study
It is possible for changing or changing, and embodiment is for explaining orally the principle of the present invention and allowing those skilled in the art
The present invention is utilized to select and narration, the technological thought attempt of the present invention in reality application with various embodiments
Determined by claim and equalization thereof.
Claims (8)
1. a remote environment-monitoring monitoring system for environmental monitoring is carried out for mobile monitoring end, including:
Environmental monitoring unit, it is arranged at environmental monitoring sites and for monitoring of environmental parameter；
Data communication units, it is arranged at described environmental monitoring unit and for described ambient parameter being transferred to
Server；
Server, from the data of data communication units and processes these data and GIS map for reception
Data, wherein, described server includes environmental monitoring GIS information transmission unit, and it is for mobile monitoring
End transmission environment monitoring GIS information.
System the most according to claim 1, it is characterised in that described environmental monitoring GIS information is transmitted
Unit includes:
Blocking unit, for carrying out piecemeal to GIS data information；
Coding unit, for calculating the property value of each described piece, and encodes described each piece accordingly；
Compression transmission unit, for being compressed transmitting to data based on this coding.
System the most according to claim 2, it is characterised in that described blocking unit includes:
Map datum obtains subelement, for obtaining the vector data of GIS map；
Divide subelement, for judging each environmental monitoring sites in described GIS map region according to predetermined threshold value
Data whether abnormal, and according to the vector data piecemeal to described GIS map of the degree beyond predetermined threshold value；
Mark subelement, for marking described each piece with gray value, this gray value is with the shape of the first attribute information
Formula is attached in described vector data.
System the most according to claim 3, it is characterised in that described coding unit includes:
Variance yields computation subunit, for according to described first attribute information, to described vector data according to
The block that the gray value of the first attribute information is corresponding is ranked up, and obtains arranging from big to small according to the first attribute information
Multiple pieces of B1, B2, B3 of row ..., Bn, and the meansigma methods of gray value based on described first attribute information
Calculate each block variance yields C1, C2, C3 relative to the gray value of the first attribute information ..., Cn；
First vector data computation subunit, for the vector data of computing block B1, as the first vector data；
Second vector data computation subunit, for each block described, accordingly with its respective variance
Value C1, C2, C3 ..., Cn is radius, does regular hexagon centered by its geometric center, and for finally
The frequency soprano that each piece of corresponding regular hexagon in described GIS map region overlaps, calculates this block
The vector data of corresponding GIS map subregion, as the second vector data；
3rd vector data computation subunit, for obtaining for cutting the area of lap after above-mentioned overlap
The vector data of GIS map subregion corresponding to the maximum block of residual area, as the 3rd vector data；
Euclidean distance computation subunit, for calculating geometric center and the 3rd vector data of the second vector data
Geometric center between Euclidean distance d；
Normal vector data determine subelement, the arrow obtained divided by described Euclidean distance d for the first vector data
Amount data are as normal vector data；
Chained list sets up subelement, is used for calculating described each piece of B1, B2, B3 ..., the vector data of Bn is relative
In vector difference D1, D2, the D3 of described normal vector data ..., Dn, and be each piece described variance yields,
Described vector difference, the first property value and additional information set up chained list；
Coding information generates subelement, is used for described vector difference D1, D2, D3 ..., Dn is according to as follows
Conversion formula is changed, and obtains and described each piece of corresponding vector data (Xi, Yi) corresponding coding letter
Breath:
System the most according to claim 4, it is characterised in that described compression transmission unit includes:
Compression subelement, for being compressed described coding information；
Transmission subelement, for being transmitted described chained list and the coding information after overcompression.
System the most according to claim 5, it is characterised in that described be compressed coding information is wrapped
Include the following compression algorithm of employing to be compressed: hang down away from limit value method or DouglasPeucker method.
System the most according to claim 5, it is characterised in that described be compressed coding information is wrapped
Include and utilize Wavelet Transform to be compressed.
System the most according to claim 5, it is characterised in that be transmitted including root by described chained list
Create corresponding linked list array according to described chained list, and transmit this linked list array.
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| CN201610218561.8A CN105913365A (en) | 2016-04-08 | 2016-04-08 | Environment monitoring GIS information transmission unit |
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| CN110158430A (en) * | 2019-05-08 | 2019-08-23 | 中铁北京工程局集团有限公司 | A kind of automatic plucking laminating machine in bridge concrete face |
| CN112241440A (en) * | 2019-07-17 | 2021-01-19 | 临沂大学 | Three-dimensional green quantity estimation and management method based on LiDAR point cloud data |
| CN112506118A (en) * | 2020-11-30 | 2021-03-16 | 九江检安石化工程有限公司 | Environment monitoring analysis remote control system based on GIS |
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| CN110158430A (en) * | 2019-05-08 | 2019-08-23 | 中铁北京工程局集团有限公司 | A kind of automatic plucking laminating machine in bridge concrete face |
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Application publication date: 20160831 |