CN105868203A - Industrial internet-of-things distributed data access method and database system - Google Patents
Industrial internet-of-things distributed data access method and database system Download PDFInfo
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Abstract
The invention discloses an industrial internet-of-things distributed data access method and a database system. The method comprises the steps of allocating a sub-database to a measurement data source of a region, wherein each sub-database stores the data content of the region, and a main database stores an IP address and a data source range of each sub-database; when the main database receives a data subscription request from an application service, matching a data source range in the request with that of each sub-database, finding IP address/addresses of one or more matched sub-databases, and sending the data subscription request to the sub-databases; and after the data reported by the sub-database is received, returning the data to the corresponding application service. Therefore, huge data in an industrial internet-of-things system can be reasonably split and stored; the main database can quickly find an actual storage position of each piece of the data and call the data; while industrial internet-of-things application demands are met, the load of the main database can be reduced and the data search speed can be increased; and the database can be expanded infinitely and is smooth to upgrade.
Description
Technical field
The present invention relates to a kind of industry Internet of Things Distributed Data Visits technology.
Background technology
Industrial environment monitoring Internet of Things, the most widely distributed, it is likely distributed in the whole nation even zones of different in the whole world,
There is multiple substation point.Each substation point generally comprises: bottom sensing node, carries out two grades of works of data acquisition
Control equipment, substation Surveillance center data being monitored in real time, collect and analyzing；In the monitoring of different substations
The heart finally accesses mster-control centre by network (including public network, dedicated network etc.), the number that will be gathered
According to uploading to the real-time data base in mster-control centre, various apply when needs use data, real-time to main website
Data base carries out request of data, and the source of the data that real-time data base is asked according to this application, in data base
Retrieve, by the data feedback that retrieved to corresponding application, constitute the integrated network of seamless link,
It is thus possible to carry out remote control remote measurement, industrial environment monitoring by mster-control centre, analyze, can be automatic
Change data acquisition, automatic instrument reads, the informative that can monitor, and 24 hours uninterrupted sampling,
Monitoring, analysis.
But, by which, real-time data base needs to preserve all data, and data volume is huge, data query
Speed is relatively slow, particularly with later stage System Expansion, increases more substation, increases more multi-access point (data
Measurement source) in the case of, this problem the most particularly highlights.
Summary of the invention
The technical problem that present invention mainly solves be to provide a kind of industry Internet of Things distributing data access method and
Database Systems so that can search rapidly in the case of data volume is huge in industry Internet of Things, and can be endless
Dilatation data base, it is achieved smooth upgrade.
In order to solve above-mentioned technical problem, the invention provides a kind of industry Internet of Things Distributed Data Visits side
Method, comprises the steps of
A is one subdata base of metric data source distribution in a region, and each subdata base preserves and belongs to this
The data content of the data source in region；
B MDL preserves the IP address of each subdata base, and the data source corresponding to this subdata base
Scope；
C is when MDL receives data subscription request from application service, by the data in the request of this data subscription
Source range, mates with the data source scope of each subdata base, find mated or part coupling one or
The IP address of multiple subdata bases, the one or more subdata bases to coupling or part coupling send data and order
Read request；
Correspondence is integrated and returned to data, after receiving the data that subdata base reports, by D MDL
Application service.
As improving further, in step C, if the data in the data subscription request that receives of MDL
Source range relates to the data source scope of multiple subdata base, then coupling obtains multiple subdata base, according to being mated
The data source scope of each subdata base, the data source scope in asking data subscription splits accordingly, point
Not do not send data subscription request to multiple subdata bases, comprise in the request after fractionation with this subdata base mutually
The subdata source range joined.
As improving further, the method can also comprise the steps of
Subdata base, when newly-increased data, broadcasts the IP ground of this subdata base at the broadcast channel made an appointment
Location and/or data source scope；
MDL receives IP address and/or the data source scope of subdata base by broadcast channel, and to this
IP address and the corresponding data source scope thereof of this subdata base of ground storage are updated.
As improving further, MDL by broadcast channel receive subdata base IP address and/or
After the step of data source scope, also comprise the steps of
Pass through received IP address and set up communication connection with subdata base；
In step C, MDL finds the IP of the one or more subdata bases mated or partly mate
Behind address, directly by the communication connection set up between MDL and this IP address, to corresponding son
Data base sends data subscription request.
As improving further, in step C, MDL finds and is mated or one or many of part coupling
Behind the IP address of individual subdata base, pass through found IP address and set up communication connection with corresponding subdata base,
Pass through set up communication connection and send data subscription to one or more subdata bases of coupling or part coupling
Request.
As improving further, MDL can pre-save the IP address corresponding to each subdata base and
Data source scope；
Subdata base when its data source scope that IP address changes and/or it is corresponding changes,
The IP address of this subdata base and/or corresponding data source scope is broadcasted by broadcast channel.
As improving further, the method also comprises the steps of
When newly-increased subdata base, configuration information, by automatically registering passage, is sent out by newly-increased subdata base
Deliver to MDL, register.
As improving further, MDL is after receiving the data that subdata base reports, to the number received
According to caching；
MDL is when receiving data subscription request, preferentially by the data source scope in the request of this data subscription,
Mate with the data source scope of the data cached, if both match, then directly read and cached
Data, return its data asked to application service.
As improving further, the data source scope in the present invention can comprise:
The unique corresponding data of the ID scope of data source and/or name scope, data source ID or DSN
Source.
Present embodiment also provides for a kind of industry Internet of Things distributed data base system, is the measurement in a region
Data source one subdata base of distribution, and a MDL is set, each subdata base is by network and main number
Connect according to storehouse；
Each subdata base, for preserving the data message of the data source of one's respective area, is receiving the number of MDL
After the request of subscribing to, upload its data asked to MDL；
MDL is for preserving the IP address of each subdata base, and the data corresponding to this subdata base
Source range；When MDL receives data subscription request from application service, the number during this data subscription is asked
According to source range, mate with the data source scope of each subdata base, find and mated or one of part coupling
Or the IP address of multiple subdata base, the one or more subdata bases to coupling or part coupling send data
Subscribe to request；After receiving the data that subdata base is uploaded, data are integrated and returns to application service.
As improving further, subdata base is additionally operable to when newly-increased data, leads in the broadcast made an appointment
IP address and/or the data source scope of this subdata base is broadcasted in road；
MDL is additionally operable to be received IP address and/or the data source scope of subdata base by broadcast channel,
And the IP address and corresponding data source scope thereof to this locally stored subdata base is updated.
Compared with prior art, the main distinction and effect thereof are embodiment of the present invention: be a region
One subdata base of metric data source distribution, each subdata base preserves the data of the data source belonging to one's respective area
Content；MDL preserves the IP address of each subdata base, and the data source corresponding to this subdata base
Scope；When MDL receives data subscription request from application service, the data during this data subscription is asked
Source range, mates with the data source scope of each subdata base, find mated or part coupling one or
The IP address of multiple subdata bases, the one or more subdata bases to coupling or part coupling send data and order
Read request；Data, after receiving the data that subdata base reports, are integrated and return to correspondence by MDL
Application service.By which, data volume huge in an industrial Internet of things system can be carried out
Reasonably split storage, and MDL can be quickly found the actual storage locations of each data, goes forward side by side
Row calls, and while satisfied industry Internet of Things application demand, can reduce the heavy burden of MDL, carry
High data search speed.And can endless ground dilatation data base, upgrading is smooth.
Subdata base broadcasts IP address and/or the data source of this subdata base at the broadcast channel made an appointment
Scope；MDL receives IP address and/or the data source scope of subdata base by broadcast channel, and right
IP address and the corresponding data source scope thereof of this locally stored subdata base are updated.Pass through the party
Formula, subdata base can possess fixing IP address, and i.e. its IP address is modifiable, even if sub
Data base IP address changes, and does not also interfere with MDL and calls its data, consequently facilitating subnumber
Renewal, maintenance and dilatation according to storehouse.
Accompanying drawing explanation
Fig. 1 is the industrial Internet of Things distributing data access method flow chart of first embodiment of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention's
Embodiment is described in further detail.
First embodiment of the invention relates to a kind of industry Internet of Things distributing data access method, for being distributed in
The substation of zones of different is respectively allocated a subdata base, and the remote communication devices of each substation connects this substation bottom
Measuring point, comprises sensing equipment and industrial control equipment etc., receives book from the sensing equipment connected and industrial control equipment
The industrial data stood, and be saved in subdata base.Each subdata base preserves the lower measuring point of this substation linchpin
Data.Each subdata base is connected with MDL by wired or wireless network.MDL pre-saves each
The IP address of subdata base, and the data source scope corresponding to this subdata base.Data source scope can be
The ID scope of data source, name scope etc., data source ID or DSN unique corresponding data source.
Concrete data access flow process is as shown in Figure 1.
In step 101, subdata base after new increment measuring point data, is led to by the broadcast made an appointment in storehouse
IP address and the data source range of this subdata base is broadcasted in road.In order to simplify data source range transmission and compare
Process, subdata base can also be broadcasted by broadcast channel only when its data source scope changes
Data source scope corresponding to this subdata base.
In step 102, MDL receives IP address and the data source model of subdata base by broadcast channel
Enclose, and the IP address and corresponding data source scope thereof to this locally stored subdata base is updated.
In step 103, MDL receives data subscription request from application service.
In step 104, MDL is by the data source scope in the request of this data subscription, with each subdata base
Data source scope is mated, and finds the IP address of mated subdata base.
If the data source scope in the data subscription request that MDL receives relates to the number of multiple subdata base
According to source range, then coupling obtains multiple subdata base, according to the data source scope of each subdata base mated,
Data source scope in asking data subscription splits accordingly.
In step 105, MDL passes through found IP address and sets up communication link with corresponding subdata base
Connect.If coupling obtains multiple subdata base, set up communication connection with multiple corresponding subdata bases the most respectively.
In step 106, MDL passes through one or more sons that set up communication connection obtains to coupling
Data base sends data subscription request, comprises asked data source scope in the request.
When coupling obtains multiple subdata base, send data subscription to multiple subdata bases the most respectively
Request, comprises the subdata source range matched with this subdata base after fractionation in the request.
In step 107, after subdata base receives the data subscription request of autonomous database, according in request
Data source scope, report corresponding data source data to MDL.
In step 108, the data received, after receiving the data that subdata base reports, are entered by MDL
Row cache, and data are integrated, return to the application service of correspondence.
When MDL receives data subscription request later, the data source in preferentially this data subscription being asked
Scope, mates with the data source scope of the data currently cached, if both match, the most directly reads
Take cached data, return its data asked to application service, if without matched data, then enter step
Rapid 104.
By present embodiment, data volume huge in an industrial Internet of things system can be carried out reasonably
Split storage, and MDL can be quickly found the actual storage locations of each data, and call,
While meeting industry Internet of Things application demand, the heavy burden of MDL can be reduced, improve data search speed.
And can endless ground dilatation data base, upgrading is smooth.
Further, MDL can control each subdata according to the demand of self and system busy extent
Call time on storehouse, report content and priority, all data need not be reported and be stored in master data
Carry out behind storehouse unifying management and control, it is only necessary to according to MDL demand, on-demand reported data.Meeting main website
While management and control demand, save the memory space of MDL, improve management and control efficiency.
By the way of subdata base Auto broadcast IP address, in time up-to-date data message can be reported master
Data base, and, subdata base can possess fixing IP address, and i.e. its IP address is modifiable,
Even if subdata base IP address changes, do not interfere with MDL yet and its data are called, thus just
Renewal, maintenance and dilatation in subdata base.
When newly-increased subdata base, configuration information, by automatically registering passage, is sent out by newly-increased subdata base
Deliver to MDL, register.Configuration information generally comprises the IP address of newly-increased subdata base, end
The information such as message ceases, corresponding data source scope.Thus need not be by manually MDL being risen
Level, it is achieved automatic, smooth dilatation.
Second embodiment of the invention also relates to a kind of industry Internet of Things distributing data access method, with the
One embodiment is roughly the same, and its difference is, in the first embodiment, MDL is receiving data subscription
After request, the subdata base mated with data source scope in request sets up communication connection.And in present embodiment,
After MDL receives IP address and the data source range of subdata base by broadcast channel, i.e. pass through institute
Communication connection is set up with subdata base in the IP address received.Mated one or many is found at MDL
Behind the IP address of individual subdata base, directly by the communication link set up between MDL and this IP address
Connect, send data subscription request to corresponding subdata base.Such that it is able to accelerate MDL for data
Allocating time.
Third embodiment of the invention also relates to a kind of industry Internet of Things distributing data access method, with first
Embodiment is roughly the same, and its difference is, in present embodiment, MDL can comprise multiple host,
Every main frame can comprise multiple network interface, carries out load balancing.In this data subscription is asked by MDL
Data source scope, mate with the data source scope of each subdata base, find mated subdata base
Behind IP address, MDL, according to the load-balancing mechanism preset, selects to load little master in MDL
Machine, is set up with corresponding subdata base according to the subdata base IP that coupling obtains by the main frame that this load is little
Communication connection.
Concrete load-balancing mechanism can be such that
Set respectively for the different cpu loads of main frame, different memory usage and different network interface flow in advance
Score value；And be network interface assignment of traffic high weight, distribute low weight for memory usage and cpu load；
Monitor the cpu load of each main frame of described MDL, memory usage and network interface flow, and turn
Be changed to correspondence score value, by the cpu load score value of same main frame being converted to, memory usage score value,
After being multiplied by corresponding weight with network interface flow score value, sue for peace, obtain the comprehensive assessment index of this main frame,
According to the comprehensive assessment index of each main frame, select the main frame that comprehensive assessment index is optimal, little as load
Main frame.
When a data subscription asks corresponding multiple subdata base, can be according to load balancing
Assessment result, selects multiple main frame, sets up communication connection with corresponding subdata base respectively, it is also possible to by
Same main frame sets up communication connection with corresponding subdata base respectively.
Four embodiment of the invention relates to a kind of industry Internet of Things distributed data base system, is a region
One subdata base of metric data source distribution, and a MDL is set, each subdata base is by wired
Or wireless network is connected with MDL.
Each subdata base, for preserving the data message of the data source of one's respective area, is receiving the number of MDL
After the request of subscribing to, upload its data asked to MDL；
MDL is for preserving the IP address of each subdata base, and the data corresponding to this subdata base
Source range；When MDL receives data subscription request from application service, the number during this data subscription is asked
According to source range, mate with the data source scope of each subdata base, find and mated or one of part coupling
Or the IP address of multiple subdata base, the one or more subdata bases to coupling or part coupling send data
Subscribe to request；After receiving the data that subdata base is uploaded, data are integrated and returns to application service.
Subdata base also includes broadcast module, for broadcasting this subdata base at the broadcast channel made an appointment
IP address and/or data source scope.
MDL also includes broadcast reception module, for being received the IP of subdata base by broadcast channel
Address and/or data source scope, and to the IP address of this locally stored subdata base and corresponding number thereof
It is updated according to source range.
By present embodiment, data volume huge in an industrial Internet of things system can be carried out reasonably
Split storage, and MDL can be quickly found the actual storage locations of each data, and call,
While meeting industry Internet of Things application demand, the heavy burden of MDL can be reduced, improve data search speed.
And can endless ground dilatation data base, upgrading is smooth.
Further, MDL can control each subdata according to the demand of self and system busy extent
Call time on storehouse, report content and priority, all data need not be reported and be stored in master data
Carry out behind storehouse unifying management and control, it is only necessary to according to MDL demand, on-demand reported data.Meeting main website
While management and control demand, save the memory space of MDL, improve management and control efficiency.
By the way of subdata base Auto broadcast IP address, in time up-to-date data message can be reported master
Data base, and, subdata base can possess fixing IP address, and i.e. its IP address is modifiable,
Even if subdata base IP address changes, do not interfere with MDL yet and its data are called, thus just
Renewal, maintenance and dilatation in subdata base.
Although by referring to some of the preferred embodiment of the invention, the present invention being shown and retouch
State, but it will be understood by those skilled in the art that can to it, various changes can be made in the form and details,
Without departing from the spirit and scope of the present invention.
Claims (9)
1. an industrial Internet of Things distributing data access method, it is characterised in that comprise the steps of
A is one subdata base of metric data source distribution in a region, and each described subdata base preserves and belongs to
Data content in the data source of one's respective area；
B MDL preserves the IP address of each subdata base, and the data source corresponding to this subdata base
Scope；
C is when MDL receives data subscription request from application service, by the data in the request of this data subscription
Source range, mates with the data source scope of each subdata base, find mated or part coupling one or
The IP address of multiple subdata bases, the one or more subdata bases to described coupling or part coupling send number
According to the request of subscribing to；
Described answering is integrated and returned to data, after receiving the data that subdata base reports, by D MDL
With service.
Industry Internet of Things distributing data access method the most according to claim 1, it is characterised in that
Also comprise the steps of
Subdata base, when newly-increased data, broadcasts the IP ground of this subdata base at the broadcast channel made an appointment
Location and/or data source scope；
Described MDL receives IP address and/or the data of described subdata base by described broadcast channel
Source range, and the IP address and corresponding data source scope thereof to this locally stored subdata base carry out more
Newly.
Industry Internet of Things distributing data access method the most according to claim 2, it is characterised in that
Described MDL receives the IP address of described subdata base and/or data source scope by broadcast channel
After step, also comprise the steps of
Pass through received IP address and set up communication connection with described subdata base；
In described step C, MDL finds and is mated or the one or more subdata bases of part coupling
Behind IP address, directly by the communication connection set up between MDL and this IP address, to correspondence
Subdata base sends data subscription request.
Industry Internet of Things distributing data access method the most according to claim 2, it is characterised in that
In described step C, MDL finds the IP ground of the one or more subdata bases mated or partly mate
Behind location, passing through found IP address and corresponding subdata base and set up communication connection, that passes through to be set up is logical
One or more subdata bases that letter connects to described coupling or part coupling send data subscription request.
Industry Internet of Things distributing data access method the most according to claim 2, it is characterised in that
MDL pre-saves the IP address corresponding to each subdata base and data source range；
Described subdata base changes in its data source scope that IP address changes and/or it is corresponding
During change, broadcast the IP address of this subdata base and/or corresponding data source model by described broadcast channel
Enclose.
Industry Internet of Things distributing data access method the most according to claim 2, it is characterised in that
Also comprise the steps of
When newly-increased subdata base, configuration information, by automatically registering passage, is sent out by newly-increased subdata base
Deliver to MDL, register.
Industry Internet of Things distributing data access method the most according to claim 2, it is characterised in that
In described step D, the data received, after receiving the data that subdata base reports, are carried out by MDL
Caching；
Described MDL is when receiving data subscription request, preferentially by the data source model in the request of this data subscription
Enclose, mate with the data source scope of the data cached, if both match, the most directly obtain and delayed
The data deposited, return its data asked to described application service.
8. an industrial Internet of Things distributed data base system, it is characterised in that: it is the measurement in a region
Data source one subdata base of distribution, and arranges a MDL, each described subdata base by network with
Described MDL connects；
Each described subdata base, for preserving the data message of the data source of one's respective area, is receiving MDL
Data subscription request after, upload its data asked to described MDL；
Described MDL is used for preserving the IP address of each subdata base, and corresponding to this subdata base
Data source scope；When MDL receives data subscription request from application service, during this data subscription is asked
Data source scope, mate with the data source scope of each subdata base, find mated or part coupling
The IP address of one or more subdata bases, to described coupling or one or more subdata bases of part coupling
Transmission data subscription is asked；After receiving the data that subdata base is uploaded, data are integrated and returns to institute
State application service.
Industry Internet of Things distributed data base system the most according to claim 8, it is characterised in that
Described subdata base is additionally operable to when newly-increased data, and the broadcast channel made an appointment broadcasts this subdata base
IP address and/or data source scope；
Described MDL be additionally operable to by described broadcast channel receive described subdata base IP address and/
Or data source scope, and to the IP address of this locally stored subdata base and corresponding data source scope thereof
It is updated.
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