CN101950295B - Intelligent starlike structure modeling method applied to traffic signal system management - Google Patents
Intelligent starlike structure modeling method applied to traffic signal system management Download PDFInfo
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Abstract
The invention relates to an intelligent starlike structure modeling method applied to traffic signal system management. The method comprises the following steps of: abstracting space data resources of a traffic signal system; defining a starlike relationship of a traffic signal service model; defining a data template of the traffic signal service model; indexing traffic signals and maintaining codes; performing symbolic definition on objects of the traffic signals; and defining a traffic signal service interface and using a traffic signal data model. The modeling method provided by the invention has the advantages of fully utilizing the starlike space characteristics of the traffic signal system, differing from the common space data modeling method, combining traffic signal time sequence, achieving the unity of modeling and base-establishing management in an urban traffic signal management system, rapidly establishing space and non-space data models of various traffic systems, truly realizing time space range-based multi-dimensional management of space data, meeting effective management requirements on various information resources in urban information management and having great significance for popularization.
Description
Technical field
The present invention relates to a kind of method of carrying out spatial data modeling and management in industries such as municipal administration, traffic administrations; Especially for the better spatial data resource of industries such as organization and management traffic signals, road traffic; Comprise non-space data model and Spatial Data Model,, made full use of the star space characteristic of traffic signal system the method that traditional modeling method has been carried out optimization and abstract design; Be different from general spatial data modeling; In conjunction with the traffic signals sequential, reached the unitarity that library management is built in modeling in the urban traffic signal management system, can create the space and the non-space data model of various traffic systems fast; Really realized the multi-dimensional management of spatial data, specifically a kind of star structure intelligent modeling method that is applied to the management of traffic signal system spatial data resource based on space-time unique.
Background technology
Popular spatial data modeling method mainly is to adopt third party GIS platform software to build the storehouse both at home and abroad at present; Only solve the storage problem with file or database mode (such as adopting platform such as Autodesk Map/ArcGis/Mapinfo) of spatial data, promptly built up the ability that the spatial data in storehouse is not discerned automatically and judged the relation of this complicacy.So when the user need implement the MIS of a basic space data model; Except creating the basic figure layer according to the GIS platform software; Realize Premium Features such as complex spatial relation, such as to the polar plot layer and between set up restriction relation, spatial relationship; Carry out secondary development with regard to the interface that needs usage platform and realize that this itself has just increased the time cost and the financial cost of client's solution; And follow-up maintenance also need drop into the renewal of upgrading of technical service cost.
Present space data modeling method has just been utilized the fundamental characteristics of tables of data in the present relational database system, supports basic data type and space geometry type; Can not set up interface relationship flexibly with system business function and external service.Particularly to the traffic signals industry, spatial modeling and the modeling of time separate, and can not realize comprehensive management and analysis, and the needs that satisfy the management of client's spatial data resource.
Summary of the invention
The objective of the invention is to the unicity in traditional modeling method, data model management; Room and time separated modeling or definition; And the problem of the complicacy of secondary development; A kind of can the solution better that proposes is applied to the star structure intelligent modeling method that traffic signal system is managed in the city Back ground Information Resource Modeling, particularly industry such as traffic signals, traffic administration.
Technical scheme of the present invention is:
A kind of star structure intelligent modeling method that is applied to the traffic signal system management, it may further comprise the steps:
Step 1: the traffic signal system spatial data resource is carried out abstract, create traffic signals business model object: described traffic signal system spatial data resource comprises traffic signals, signal location, directional ray and the reference position of various grades and classification; Described traffic signals business model object comprises: traffic signals (TR_SIGNAL), signal location (TR_LOCATION), directional ray (TR_LINE) and reference position (TR_REF_SIGNAL);
Wherein to reference position (TR_REF_SIGNAL) model singularity in traffic system; We have expanded the definition of space geometry type: general space geometry type comprises complex geometry objects such as point, line, surface even multiple spot, multi-thread, multiaspect; But all there is not special directivity to describe; Singularity to traffic signal system; Our expanded definition a kind of new space geometry type ADO (special annotation geometric object; English full name Annotation Discriminator Object), a kind of exactly some object with direction, and also this direction is decided by that other are close with it and the geometric object face (Polygon) or the line object (Line/MultiLine) of certain relation is arranged.The space geometry type of reference position (TR_REF_SIGNAL) is exactly the ADO type.
Step 2: the star contextual definition of traffic signals business model: the space layout of traffic signals is a star structure, and the relation that defines between four kinds of traffic signals business models is following,
Near a signal location, there are a plurality of traffic signals to exist, are the 1:n relation between them,
It is spatial information that each traffic signals all has a reference position, is the 1:1 relation between them,
Each traffic signals all is connected to other equipment through many directional rays, is the 1:n relation between them;
On the locus, be a plurality of traffic signals of connection and the directional ray at center, constitute the network structure of a star, and make this star model have directivity through the above-mentioned relation definition with the signal location; Step 3: traffic signals business model sequential logic rule definition: described traffic signals business model sequential logic rule is the definition to the rule of signal condition real-time change; Combine locus and orientation angle simultaneously; When signal changes to the description of other spatial objects or vehicular traffic, pedestrian's carrying out property of influence rule, the definition of signal in real time data storage rule;
Step 4: the data template definition of traffic signals business model: described traffic signals business model data template is used for generating in batches the traffic signals business model object data with similar standard; This traffic signal system data template comprises that several have the attribute of the business model of incidence relation described in the step 2, and these attributes are imported in batches in template or copied from affiliated partner automatically;
Step 5: traffic signals business model index, code maintenance: the concrete data of traffic signals business model have strict definition, and index or code comprise the definition that has unique constraint in definition with unique constraint or the particular range value; Be index or the code that the traffic signals business model has unique identification or characteristic of division; They add the automatic sequence numbering with the prefix of appointment; Come to generate automatically this unique attribute value, wherein prefix is the combination of certain attributes, comprises the attribute of how much basic models with correlationship;
Signal location is defined as unique index with " signal classification+traffic signals position code ";
Traffic signals are defined as unique index with " signal classification+traffic signals position code+signal subclass+signal code ", and promptly code is unique in the particular space scope;
Directional ray is defined as unique index with " signal classification+sense+device numbering ";
The reference position is defined as unique index with " signal classification+reference position code ";
Step 6: traffic signals business model symbolism definition: it comprises the definition to staple and sub-key element;
Wherein staple is the definition of playing up to traffic signals business model object, the Show Styles of control basic model object on map; The space geometry type package vinculum/multi-thread/curve of traffic signals basic model is Line/MultiLine/Curve; Point/multiple spot is Point/MultiPoint; Special annotation geometric object point ADO (special annotation geometric object; English full name Annotation Discriminator Object), corresponding on the map then Show Styles is how much line segments and some object;
The symbolism of staple definition promptly refers to the definition to how much line segment line styles, color, thickness, to border color, the border thickness of geometric surface, and Fill Color, the definition of transparency is to the definition of the symbolic library of an object or title, displaying ratio, symbol size;
Sub-key element is by the staple expansion, and a staple adds a plurality of sub-key elements; Be that every kind of traffic signals business model has all defined the label object of a plurality of space geometry types for point, it is present near the traffic signals object, realizes on the map mark to traffic signals business model object; Marked content comprises traffic signals position code, traffic signals code, category of roads; Sub-key element defines font, color, size, the anglec of rotation that comprises marked content and show, the side-play amount that leaves marked object;
Step 7: the definition of traffic signals business model service interface: this service interface comprises map bibliography service interface (Map Catalog Service); Model information service interface (Information Service); Model editing service interface (Editing Service); Relationship model service interface (Link Service); Model definition service interface (Meta data Definition Service), model symbol service interface (Presentation Service), supervisory information signal service interface (Monitor Information Services); The first six plants interface service is the basis that all traffic signals management or supervisory system are used, and to the management of traffic signals spatial information, supervisory information signal service interface (Monitor Information Services) is the information management on the traffic signals time dimension;
Step 8: in the application of traffic and SIGNALS MANAGEMENT industry: the inside of four kinds of traffic signals basic models is all realized and has been opened like the described service interface of step 7; On main flow CAD/GIS client platform; Call above-mentioned service interface through WebServices, carry out traffic signals design and maintenance of information, space querying and specific analysis; Display monitoring information, historical data retrieval.
Traffic signals business module of the present invention comprises:
Traffic signals (TR_SIGNAL) are described various traffic signals, comprise stop signal, left-hand bend, one-way road and forbid certain tonnage vehicle pass-through, have signal classification, marker, auxiliary signal, highly, diameter, the attribute in time; The space geometry type is a line object, and line/multi-thread/curve is Line/MultiLine/Curve;
Signal location (TR_LOCATION) is described the object of locus, traffic signals place, comprises the signal hack lever, has diameter, length, quantity, year of installation, category of roads, affiliated unit; The space geometry type is an object, and point/multiple spot is Point/MultiPoint;
Directional Sign in the traffic signals is described in reference position (TR_REF_SIGNAL); When the design traffic signal system; Set the position of traffic signals, need the monumented point that points to a certain direction or radiation scope, the angle of this direction and traffic signals line, the traffic signals relation of all having living space; The space geometry type is ADO (special annotation geometric object, English full name Annotation Discriminator Object);
Directional ray (TR_LINE) has been described and has been connected lead and the cable that traffic lights are waited until lamp stand or equipment distribution box, and the space geometry type is that line/multi-thread/curve is Line/MultiLine/Curve;
Described traffic signal system spatial data resource comprises command lamp signal, crossing modulating signal, traffic guidance baton signal and hand signal, various connection devices.
In the step 1 of the present invention; Four kinds of traffic signals business modules all are the space geometry objects; When being created as the spatial database object and being saved in the spatial relationship data storehouse, both comprised the space geometry attribute field, the general property field of some different types of data had also been arranged.
Business model described in the step 2 of the present invention; Its attribute data type had both comprised the general database type, also comprised the expanded data type: operation user, dictionary territory, spatial domain; Service attributes etc., these attributes all have certain relation with business processing.
In the step 3 of the present invention, traffic signals comprise according to classification: autos only signal, bicycle right of way signal, walk signal; The autos only signal comprises heavy goods vehicle, medium-sized passenger-cargo carriage signal, car right of way signal, the light autos only signal of two three-wheels again;
Setting current state is defined as:
Allow the current logical truth TRUE that is, can not pass through is logical falsehood FALSE, defines the sequential logic rule so as follows:
● autos only signal, bicycle right of way signal signal can not be true on same direction simultaneously;
● autos only signal, walk signal can not be true on same direction simultaneously;
● the vehicle signal of the different directions of same position can not be simultaneously identical, the state mutual exclusion;
● the bicycle/pedestrian signal of the equidirectional of same position can be simultaneously identical;
● the right of way signal of heavy goods vehicle can only be in special time period work, and the other times section can only be logical falsehood FALSE;
● the similar road in commercial medium street does not allow adding machine motor-car right of way signal;
● highway, provinces and cities' high-grade highway do not allow to add pedestrian's right of way signal.
In the step 4 of the present invention; The traffic signals of described similar planning standard referred in the traffic signals design phase; The traffic signal system in some zones contains the close traffic signals position of a plurality of general property values; Each traffic signals position connects the close traffic signals of a lot of general property values again, and these traffic signals are all connecting some general property values close directional ray or reference position point equally, have constituted a star-shaped network structure on the space.
In the step 7 of the present invention, the service application of traffic signals model data realizes through the interface function of calling all openings.
In the step 8 of the present invention, Spatial Data Model is the basis of all service interfaces; Map bibliography service interface and model information service interface are the infrastructure services of retrieval map browsing data; Model editing service interface customer in response end is to the modification and the renewal of concrete model object and be saved in database, supports map edit; The model symbol service interface object symbolism definition information that externally supplies a model; Model traffic information services interface is the basic service that all properties query statistic, thematic data are analyzed; Model definition service interface and relationship model service interface are the attribute interface of Spatial Data Model, are used for internal system and use, and service externally is not provided, and the supervisory information signal service interface is the information managements of traffic signals on time dimension.
Beneficial effect of the present invention:
Modeling method provided by the invention; Made full use of the star space characteristic of traffic signal system, be different from general spatial data modeling, in conjunction with the traffic signals sequential; Reach modeling in the urban traffic signal management system and built the unitarity of library management; Can create the space and the non-space data model of various traffic systems fast, really realized the multi-dimensional management of spatial data, reach the unitarity that the urban basic data Resource Modeling is built library management based on space-time unique; Can create various spaces and non-space data model fast; Particularly the Spatial Data Model of traffic signal system has satisfied well in the urban informationization management and has managed for the traffic signal system resources effective, has the great significance for popularization.
Intelligent space data object modeling method of the present invention is to have the spatial data Modeling Platform of universal property flexibly and design in order to set up one; The information that can disposable customization has multiple attribute comprises basic data type, customization type (data field, operation user, geographic object or the like), and can and service management function, other geographic map layers produce incidence relation automatically.This business model comprised one or more geographic map layers data message, space geometry type, between related constraint relation and spatial relationship.
Adopt modeling method of the present invention can construct one fast and can be effectively the traffic signal system business datum be effectively managed the spatial information system with decision analysis; Make FTP client FTP break away from dependence to a greater degree, can make FTP client FTP be absorbed in tap/dip deep into analysis more service logic to the relational database definition; Reduce simultaneously third party GIS platform software degree of dependence, reduce the Installed capital cost of GIS-Geographic Information System construction unit; The cycle that the minimizing system builds and the cost of serving of later stage technical maintenance.
The present invention adopts star network, and its advantage is: retrieve the maximum communication flows and the scope of noise radiation fast according to radiation scope; Optimize the space planning of traffic signals, and the running status of the signal that regulates the traffic more efficiently; Repair and maintenance work spatially makes full use of existing resource, improves the efficient of traffic administration work; On time dimension, utilize time sequence information, adopt four-dimensional management, help historical information and look back, analyze; In the traffic circulation monitoring, be of value to widespread use; Can set up mutual calling interface easily with other traffic monitoring information or system, realize resource sharing to greatest extent.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is a model element data internal relations synoptic diagram of the present invention.
Fig. 3 is a contextual definition synoptic diagram between the model object of the present invention.
Fig. 4 is the synoptic diagram that concerns of the traffic signals that in the traffic signals MIS, define of the present invention, signal location, four objects of directional ray and reference position.
Fig. 5 is the synoptic diagram of the present invention to the model symbol design.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1, a kind of star structure intelligent modeling method that is applied to the traffic signal system management, it may further comprise the steps:
Step 1: the traffic signal system spatial data resource is carried out abstract, create traffic signals business model object: described traffic signal system spatial data resource comprises traffic signals, signal location, directional ray and the reference position of various grades and classification; Described traffic signals business model object comprises: traffic signals (TR_SIGNAL), signal location (TR_LOCATION), directional ray (TR_LINE) and reference position (TR_REF_SIGNAL);
Wherein to reference position (TT_REF_SIGNAL) model singularity in traffic system; We have expanded the definition of space geometry type: general space geometry type comprises complex geometry objects such as point, line, surface even multiple spot, multi-thread, multiaspect; But all there is not special directivity to describe; Singularity to traffic signal system; Our expanded definition a kind of new space geometry type ADO (special annotation geometric object; English full name Annotation Discriminator Object), a kind of exactly some object with direction, and also this direction is decided by that other are close with it and the geometric object face (Polygon) or the line object (Line/MultiLine) of certain relation is arranged.The space geometry type of reference position (TR_REF_SIGNAL) is exactly the ADO type.
The data model of traffic signal system, shown in following four tables:
The LENGTH field is a length of calculating current geometric element automatically when the storage data;
The LENGTH field is a length of calculating current geometric element automatically when the storage data;
The DLCD field is distances to initial point of calculating current geometric element automatically when the storage data;
Several fields of XH are distances to initial point of calculating current geometric element automatically when the storage data; Step 2: the star contextual definition of traffic signals business model: the space layout of traffic signals is a star structure, and the relation that defines between four kinds of traffic signals business models is following,
Near a signal location, there are a plurality of traffic signals to exist, are the 1:n relation between them,
It is spatial information that each traffic signals all has a reference position, is the 1:1 relation between them,
Each traffic signals all is connected to other equipment through many directional rays, is the 1:n relation between them;
On the locus, be a plurality of traffic signals of connection and the directional ray at center, constitute the network structure of a star, and make this star model have directivity through the above-mentioned relation definition with the signal location;
In various infosystems, various model objects normally have various complex relationships, mainly comprise 1 pair more than 1,1 pair, obligate type, optional type;
Model element data internal relations is as shown in Figure 2; Contextual definition is as shown in Figure 3 between the model object;
Such as the relation of objects such as definition traffic signals position, traffic signals, traffic signals line, reference position in the traffic signals MIS, as shown in Figure 4;
In the process that system uses, just can concern that according to these this is not have to realize in present other main flow spatial data relation management systems from vertically, laterally retrieving the data of the model of same line of business automatically.
The general direct control of municipal service personnel all be data such as traffic signals information, traffic administration thematic information, so information such as the attribute on some spatial dimensions, planned range can be come directly acquisition through relationship model.So can further find out between the model of method definition from space geometry relation and database relation and to concern with us:
Step 3: traffic signals business model sequential logic rule definition: described traffic signals business model sequential logic rule is the definition to the rule of signal condition real-time change; Combine locus and orientation angle simultaneously; When signal changes to the description of other spatial objects or vehicular traffic, pedestrian's carrying out property of influence rule, the definition of signal in real time data storage rule;
Traffic signals comprise according to classification: autos only signal, bicycle right of way signal, walk signal; The autos only signal comprises heavy goods vehicle, medium-sized passenger-cargo carriage signal, car right of way signal, the light autos only signal of two three-wheels again;
Setting current state is defined as:
Allow the current logical truth TRUE that is, can not pass through is logical falsehood FALSE, defines the sequential logic rule so as follows:
● autos only signal, bicycle right of way signal signal can not be true on same direction simultaneously;
● autos only signal, walk signal can not be true on same direction simultaneously;
● the vehicle signal of the different directions of same position can not be simultaneously identical, the state mutual exclusion;
● the bicycle/pedestrian signal of the equidirectional of same position can be simultaneously identical;
● the right of way signal of heavy goods vehicle can only be in special time period work, and the other times section can only be logical falsehood FALSE;
● the similar road in commercial medium street does not allow adding machine motor-car right of way signal;
● highway, provinces and cities' high-grade highway do not allow to add pedestrian's right of way signal.
Step 4: the data template definition of traffic signals business model: described traffic signals business model data template is used for generating in batches the traffic signals business model object data with similar standard; This traffic signal system data template comprises that several have the attribute of the business model of incidence relation described in the step 2, and these attributes are imported in batches in template or copied from affiliated partner automatically;
When the data of the various models of management; Using Template Manager is a kind of method extremely easily; This is one of function that compares in this method characteristic; Particularly when all model datas of bulk management business module according to 1 couple of object relation such as more than 1,1 pair, can generate, upgrade one/many, a collection of/many batch datas simultaneously.
Correlate template such as one group of traffic signals model of definition in the traffic signals MIS:
● a year of installation is 2009 and is the traffic signals position that the space, road surface of urban transit system major trunk roads comprises by road type;
The corresponding four kinds of traffic signals (being respectively command lamp signal, crossing modulating signal, point duty signal) of ■;
◆ the command lamp signal connects the stube cable of acoustic control type;
◆ the crossing modulating signal reference position anglec of rotation is 45 degree;
This group template data can use simultaneously, is used for generating in batches business datum when building the design of storehouse or traffic signal system in system, and this also is that at present domestic all Spatial Data Model definition or traffic signals management system do not have realization.
Such as: traffic signals designer will make some traffic signals figure continuously in a certain zone, and certain general character (identical such as the planning standard) is all arranged, and so just can use the template construct method of this model, produces these data in batches.Revise geometric figure or other attribute informations then as required.
Step 5: traffic signals business model index, code maintenance: the concrete data of traffic signals business model have strict definition, and index or code comprise the definition that has unique constraint in definition with unique constraint or the particular range value; Be index or the code that the traffic signals business model has unique identification or characteristic of division; They add the automatic sequence numbering with the prefix of appointment; Come to generate automatically this unique attribute value, wherein prefix is the combination of certain attributes, comprises the attribute of how much basic models with correlationship;
Signal location is defined as unique index with " signal classification+traffic signals position code ";
Traffic signals are defined as unique index with " signal classification+traffic signals position code+signal subclass+signal code ", and promptly code is unique in the particular space scope;
Directional ray is defined as unique index with " signal classification+sense+device numbering ";
The reference position is defined as unique index with " signal classification+reference position code ";
The concrete data of a spatial model are strict definition specifically; The index or the code that promptly have unique identification or characteristic of division; Concrete grammar is the prefix+automatic sequence numbering of definition with appointment; Come to generate automatically this unique attribute value, wherein prefix can be the combination of certain attributes, comprises the attribute of the geometric model with correlationship.
As one of them unique index of traffic signals position, promptly code is unique in the particular space scope such as " the signal classification+traffic signals position code " of traffic signals position; One of them unique index of traffic signals is defined as " signal classification+traffic signals position code+signal subclass+signal code " and is defined as unique index for another example, and promptly code is unique in the particular space scope., spatial dimension and professional classification attribute are confirmed a unique index like this, thus professional municipal administration or traffic administration personnel can be cognitive go out the details (classification with locus etc.) of this signal.
Step 6: traffic signals business model symbolism definition: it comprises the definition to staple and sub-key element;
Wherein staple is the definition of playing up to traffic signals business model object, the Show Styles of control basic model object on map; The space geometry type package vinculum/multi-thread/curve of traffic signals basic model is Line/MultiLine/Curve; Point/multiple spot is Point/MultiPoint; Special annotation geometric object point ADO Point corresponds on the map then Show Styles and is how much line segments and some object;
The symbolism of staple definition promptly refers to the definition to how much line segment line styles, color, thickness, to border color, the border thickness of geometric surface, and Fill Color, the definition of transparency is to the definition of the symbolic library of an object or title, displaying ratio, symbol size;
Sub-key element is by the staple expansion, and a staple adds a plurality of sub-key elements; Be that every kind of traffic signals business model has all defined the label object of a plurality of space geometry types for point, it is present near the traffic signals object, realizes on the map mark to traffic signals business model object; Marked content comprises traffic signals position code, traffic signals code, category of roads; Sub-key element defines font, color, size, the anglec of rotation that comprises marked content and show, the side-play amount that leaves marked object;
How more the symbolism function is the problem that must consider in all geography information modeling work, but universalization, and the operation simplicity reduces that map is played up, refresh rate, certainly will will optimization process from modeling.This method is mainly from versatility, the CAD/GIS platform interface is supportive does a lot of work to each.This method is as shown in Figure 5 to the model symbol design:
Base map symbolism work generally comprises to be handled the graphical representation and the storage organization of point, line, surface etc.; This method has here been done to further expand, and the symbolism of model definition mainly comprises graphical representation definition to key element and sub-key element (key element is each Drawing Object independently on the map);
The definition of key element performance is divided into according to the geometric type of model:
◆ dot pattern performance definition;
◆ line graph performance definition;
◆ the definition of face graphical representation.
Sub-key element comprises the definition of reference symbol and the definition of mark, and space geometry shows as an object,
The performance of staple can corresponding a plurality of sub-key elements performances, such as a municipal pipeline, the performance definition on map can for:
The staple performance:
The solid line that the √ line style is continuous;
The √ color is blue (#0000FF);
√ engineer's scale scope or the like.
Sub-key element performance can define
The √ pipe flow will is to symbol (1-2);
● symbol/symbolic library
● size/engineer's scale scope
● color
√ pipeline mark (4-6 depends on service needed).As shown in the figure:
● the marked content definition
● size/engineer's scale scope
● color
● position/alignment thereof/side-play amount
Present domestic spatial data modeling major part is mark of a correspondence; Only there is a graphic recording that the symbol definition method is just arranged; Also do not do as a whole the processing to the spatial data symbolism like this, and can expand to multiple symbolism definition (the model record that removes other any geometric types that do not have how much information can define multiple expression symbol and a plurality of markup information)
Step 7: the definition of traffic signals business model service interface: this service interface comprises map bibliography service interface (Map Catalog Service); Model information service interface (Information Service); Model editing service interface (Editing Service); Relationship model service interface (Link Service); Model definition service interface (Meta data Definition Service), model symbol service interface (Presentation Service), supervisory information signal service interface (Monitor Information Services); The first six plants interface service is the basis that all traffic signals management or supervisory system are used, and to the management of traffic signals spatial information, supervisory information signal service interface (Monitor Information Services) is the information management on the traffic signals time dimension;
Step 8: in the application of traffic and SIGNALS MANAGEMENT industry: the inside of four kinds of traffic signals basic models is all realized and has been opened like the described service interface of step 7; On main flow CAD/GIS client platform; Call above-mentioned service interface through WebServices, carry out traffic signals design and maintenance of information, space querying and specific analysis; Display monitoring information, historical data retrieval.
Traffic signals business module of the present invention comprises:
Traffic signals (TR SIGNAL) are described various traffic signals, comprise stop signal, left-hand bend, one-way road and forbid certain tonnage vehicle pass-through, have signal classification, marker, auxiliary signal, highly, diameter, the attribute in time; The space geometry type is a line object, and line/multi-thread/curve is Line/MultiLine/Curve;
Signal location (TR_LOCATION) is described the object of locus, traffic signals place, comprises the signal hack lever, has diameter, length, quantity, year of installation, category of roads, affiliated unit; The space geometry type is an object, and point/multiple spot is Point/MultiPoint;
Directional Sign in the traffic signals is described in reference position (TR_REF_SIGNAL); When the design traffic signal system; Set the position of traffic signals; Need the monumented point that points to a certain direction or radiation scope, the angle of this direction and traffic signals line, the traffic signals relation of all having living space, the space geometry type is ADO;
Directional ray (TR_LINE) has been described and has been connected lead and the cable that traffic lights are waited until lamp stand or equipment distribution box, and the space geometry type is that line/multi-thread/curve is Line/MultiLine/Curve;
Described traffic signal system spatial data resource comprises command lamp signal, crossing modulating signal, traffic guidance baton signal and hand signal, various connection devices.
In the step 1 of the present invention; Four kinds of traffic signals business modules all are the space geometry objects; When being created as the spatial database object and being saved in the spatial relationship data storehouse, both comprised the space geometry attribute field, the general property field of some different types of data had also been arranged.
Business model described in the step 2 of the present invention; Its attribute data type had both comprised the general database type, also comprised the expanded data type: operation user, dictionary territory, spatial domain; Service attributes etc., these attributes all have certain relation with business processing.
In the step 4 of the present invention; The traffic signals of described similar planning standard referred in the traffic signals design phase; The traffic signal system in some zones contains the close traffic signals position of a plurality of general property values; Each traffic signals position connects the close traffic signals of a lot of general property values again, and these traffic signals are all connecting some general property values close directional ray or reference position point equally, have constituted a star-shaped network structure on the space.
In the step 7 of the present invention, the service application of traffic signals model data realizes through the interface function of calling all openings.
In the step 8 of the present invention, Spatial Data Model is the basis of all service interfaces; Map bibliography service interface and model information service interface are the infrastructure services of retrieval map browsing data; Model editing service interface customer in response end is to the modification and the renewal of concrete model object and be saved in database, supports map edit; The model symbol service interface object symbolism definition information that externally supplies a model; Model traffic information services interface is the basic service that all properties query statistic, thematic data are analyzed; Model definition service interface and relationship model service interface are the attribute interface of Spatial Data Model, are used for internal system and use, and service externally is not provided, and the supervisory information signal service interface is the information managements of traffic signals on time dimension.
Case study on implementation:
Because all service interfaces have been opened to the outside world to main flow CAD/GIS client platform (like ArcGIS; AutoMap; Bentley Map), so client need not to develop in addition other functions, and excessively pay close attention to figure layer data library structure and service logic relation; Because these have all been realized in model inside
1) traffic signal system design and maintenance of information
A) directory service loads automatically and shows geometric figure on map according to the map, because the automatic call sign service interface of directory service meeting, map can be played up automatically
B) municipal administration design, no matter the computer memory position is design traffic signals position or directly design traffic signals earlier automatically, model system all can computer memory information, as: administrative area, neighbour, community, street etc.;
C) if use template to generate, generate attribute, coding automatically, also upgrade encoding information automatically from traffic signals, traffic signals position, traffic signals line, generate symbol, marked content etc.;
D) automatic reference area, length, width;
E) according to the automatic computer memory of meta data definition position;
F) moving index coding rule can calculate automatically and generate index codes;
2) space querying, specific analysis
A) search space and planning information, other have the attribute of the model of correlationship or spatial relationship with it auto-associating;
B) auto-associating display space information, geological information (area, length, width);
C) can be according to spatial information, length, width, statistical graph (land use balance table);
D), show that thematic maps is on map according to Query Result call sign service interface.
3) retrieval of signal monitoring data
A), mate storage and monitoring time segment, locus condition automatically according to the monitor service interface;
B) according to signal output requirement, show corresponding pilot signal chart.
Suppose the administrative area is arranged neighbour (Neighborhood) 01,02 in (District) 01;
Traffic location (TR_LOCATION) T01, T02 ..., respectively at two Duan Lu centers of concrete road surface and bituminous pavement;
Traffic signals (TR_SIGNAL) S01, S02, S03 ... In the T01 position, be respectively bus signals, signal for turn;
The statistics neighbour 01 in, the place category of roads is the concrete road surface, all diameters be the year of installation of 100cm be nearest 10 years with interior traffic signals.
Because traffic location (TR_LOCATION); There is correlationship in traffic signals (TR_SIGNAL); All there is the involved relation in space in traffic location (TR_LOCATION) with administrative area, neighbour; So spatial information that the locus of inquiry traffic signals (TR_SIGNAL) can direct correlation traffic location (TR_LOCATION); Therefore adopt model method statistics special topic ad hoc for some figure layer exploitation customization condition, utilize automatic spatial relationship and correlationship fast query to go out desired result.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (5)
1. one kind is applied to the star structure intelligent modeling method that traffic signal system is managed, and it is characterized in that it may further comprise the steps:
Step 1: the traffic signal system spatial data resource is carried out abstract, create traffic signals business model object: described traffic signal system spatial data resource comprises traffic signals, signal location, directional ray and the reference position of various grades and classification; Described traffic signals business model object comprises: traffic signals, signal location, directional ray and reference position; Four kinds of traffic signals business model objects all are the space geometry objects, when being created as the spatial database object and being saved in the spatial relationship data storehouse, have both comprised the space geometry attribute field, and the general property field of some different types of data is also arranged;
Step 2: the star contextual definition of traffic signals business model: the space layout of traffic signals is a star structure, and it is following to define four kinds of traffic signals business model relation between objects,
Near a signal location, there are a plurality of traffic signals to exist, are the 1:n relation between them,
It is spatial information that each traffic signals all has a reference position, is the 1:1 relation between them,
Each traffic signals all is connected to other equipment through many directional rays, is the 1:n relation between them;
On the locus, be a plurality of traffic signals and the directional ray of the connection at center, constitute the network structure of a star, and make this star model have directivity through the above-mentioned relation definition with the signal location;
Step 3: traffic signals business model sequential logic rule definition: described traffic signals business model sequential logic rule is the definition to the rule of signal condition real-time change; Combine locus and orientation angle simultaneously; When signal changes to the description of other spatial objects or vehicular traffic, pedestrian's carrying out property of influence rule, the definition of signal in real time data storage rule;
Step 4: the data template definition of traffic signals business model: described traffic signals business model data template is used for generating in batches the traffic signals business model object data with similar standard; This traffic signals business model data template comprises that several have the attribute of the business model of incidence relation in the step 2, and these attributes are imported in batches in template or copied from affiliated partner automatically;
Step 5: traffic signals business model index, code maintenance: the concrete data of traffic signals business model have strict definition, and index or code comprise the definition that has unique constraint in definition with unique constraint or the particular range value; Be index or the code that the traffic signals business model has unique identification or characteristic of division; They add the automatic sequence numbering with the prefix of appointment; Come to generate automatically the unique attribute value, wherein prefix is the combination of certain attributes, comprises the attribute of how much basic models with correlationship;
Signal location is defined as unique index with " signal classification+traffic signals position code ";
Traffic signals are defined as unique index with " signal classification+traffic signals position code+signal subclass+signal code ", and promptly code is unique in the particular space scope;
Directional ray is defined as unique index with " signal classification+sense+device numbering ";
The reference position is defined as unique index with " signal classification+reference position code ";
Step 6: traffic signals business model symbolism definition: it comprises the definition to staple and sub-key element;
Wherein staple is the definition of playing up to traffic signals business model object, the Show Styles of control basic model object on map; The space geometry type package vinculum/multi-thread/curve of traffic signals basic model is Line/MultiLine/Curve; Point/multiple spot is Point/MultiPoint; Special annotation geometric object point ADO Point corresponds on the map then Show Styles and is how much line segments and some object;
The symbolism of staple definition promptly refers to the definition to how much line segment line styles, color, thickness, to border color, the border thickness of geometric surface, and Fill Color, the definition of transparency is to the definition of the symbolic library of an object or title, displaying ratio, symbol size;
Sub-key element is by the staple expansion, and a staple adds a plurality of sub-key elements; Be that every kind of traffic signals business model has all defined the label object of a plurality of space geometry types for point, it is present near the traffic signals object, realizes on the map mark to traffic signals business model object; Marked content comprises traffic signals position code, traffic signals code, category of roads; Sub-key element defines font, color, size, the anglec of rotation that comprises marked content and show, the side-play amount that leaves marked object;
Step 7: the definition of traffic signals business model service interface: this service interface comprises the map bibliography service interface, model information service interface, model editing service interface; The relationship model service interface; The model definition service interface, model symbol service interface, supervisory information signal service interface; The first six plants service interface is the basis that all traffic signals management or supervisory system are used, and to the management of traffic signals spatial information, the supervisory information signal service interface is the information management on the traffic signals time dimension; Spatial Data Model is the basis of all service interfaces; Map bibliography service interface and model information service interface are the infrastructure services of retrieval map browsing data; Model editing service interface customer in response end is to the modification and the renewal of concrete model object and be saved in database, supports map edit; The model symbol service interface object symbolism definition information that externally supplies a model; Model definition service interface and relationship model service interface are the attribute interface of Spatial Data Model, are used for internal system and use, and service externally is not provided, and the supervisory information signal service interface is the information managements of traffic signals on time dimension;
Step 8: in the application of traffic and SIGNALS MANAGEMENT industry: the inside of four kinds of traffic signals business model objects is all realized and has been opened like the described service interface of step 7; On main flow CAD/GIS client platform; Call above-mentioned service interface through WebServices, carry out traffic signals design and maintenance of information, space querying and specific analysis; Display monitoring information, historical data retrieval.
2. the star structure intelligent modeling method that is applied to the traffic signal system management according to claim 1 is characterized in that the traffic signals business module comprises:
Traffic signals are described various traffic signals, comprise stop signal, left-hand bend, one-way road and forbid certain tonnage vehicle pass-through, have signal classification, marker, auxiliary signal, highly, diameter, the attribute in time; The space geometry type is a line object, and line/multi-thread/curve is Line/MultiLine/Curve;
Signal location is described the object of locus, traffic signals place, comprises the signal hack lever, has diameter, length, quantity, year of installation, category of roads, affiliated unit; The space geometry type is an object, and point/multiple spot is Point/MultiPoint;
Directional Sign in the traffic signals is described in the reference position; When the design traffic signal system; Set the position of traffic signals; Need the monumented point that points to a certain direction or radiation scope, the angle of this direction and traffic signals line, the traffic signals relation of all having living space, the space geometry type is special annotation geometric object ADO;
Directional ray has been described and has been connected lead and the cable of traffic lights to lamp stand or equipment distribution box, and the space geometry type is that line/multi-thread/curve is Line/MultiLine/Curve;
Described traffic signal system spatial data resource comprises command lamp signal, crossing modulating signal, traffic guidance baton signal and hand signal.
3. the star structure intelligent modeling method that is applied to the traffic signal system management according to claim 1; It is characterized in that, the business model described in the step 2, its attribute data type had both comprised the general database type; Also comprise the expanded data type: operation user, dictionary territory; Spatial domain, service attribute, these attributes all have certain relation with business processing.
4. the star structure intelligent modeling method that is applied to the traffic signal system management according to claim 1 is characterized in that, in the step 3,
Traffic signals comprise according to classification: autos only signal, bicycle right of way signal, walk signal; The autos only signal comprises heavy goods vehicle, medium-sized passenger-cargo carriage signal, car right of way signal, the light autos only signal of two three-wheels again;
Setting current state is defined as:
Allow the current logical truth TRUE that is, can not pass through is logical falsehood FALSE,
Define the sequential logic rule so as follows:
Autos only signal, bicycle right of way signal can not be true on same direction simultaneously;
Autos only signal, walk signal can not be true on same direction simultaneously;
The vehicle signal of the different directions of same position can not be simultaneously identical, the state mutual exclusion;
Bicycle/the pedestrian signal of the equidirectional of same position can be simultaneously identical;
The right of way signal of heavy goods vehicle can only be in special time period work, and the other times section can only be logical falsehood FALSE;
The similar road in commercial medium street does not allow adding machine motor-car right of way signal;
Highway, provinces and cities' high-grade highway do not allow to add pedestrian's right of way signal.
5. the star structure intelligent modeling method that is applied to the traffic signal system management according to claim 1; It is characterized in that; In the step 4; Traffic signals with similar standard refer to that in the traffic signals design phase traffic signal system in some zones contains the close traffic signals position of a plurality of general property values, and each traffic signals position connects the close traffic signals of a lot of general property values again; Same these traffic signals are all connecting some general property values close directional ray or reference position point, have constituted a star-shaped network structure on the space.
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