CN103020236A - Method, system and distributed database system for retrieving recorded video - Google Patents
Method, system and distributed database system for retrieving recorded video Download PDFInfo
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Abstract
The invention is applied to the field of video surveillance technologies and discloses a method, a system and a distributed database system for retrieving a recorded video. The method comprises the following steps: a client side sends a recorded video retrieving request message to the distributed database system; and the distributed database system is in response to the recorded video retrieving request, executes a retrieving action, and returns a retrieved result to the client side, wherein the distributed database system comprises at least one global database management system, at least one local database management system and at least one local database. According to the method, the system and the distributed database system, user operations can be relatively simplified, the retrieving efficiency is greatly increased, the flexibility is high, retrievals of various storage modes can be compatible, the extension is easy, and a variety of application situations can be supported through adding a database node.
Description
Technical field
The present invention relates to technical field of video monitoring, more specifically, relate in a kind of public safety field video monitoring system video record search method, system and distributed data base system based on distributed data base.
Background technology
In recent years, continuous increase along with domestic safe city construction scale, people tend to adopt construction mode stage by stage, and along with develop rapidly and the evolution of technology, different phase also can adopt different technology to build, therefore, in same video monitoring system, adopt multiple different technology and the phenomenon of depositing very general.Such as tending to exist multiple storage mode in the video monitoring system: a kind of is to disperse to be stored on the front end built-in hard disk video tape recorder (front-end equipment); A kind of is all to be stored on the special purpose memory devices of rear end, such as IPSAN(IP Storage Area Network); Also having a kind of is that video recording with certain zone is stored on the memory device, forms the storage that disperses; More complicated situation is according to different memory requirements, the mode that adopts the front and back end to store simultaneously.Based on this type of present situation of the video storage mode in the supervisory system, the problem of bringing is the complicacy that has greatly increased video recording retrieval in the video monitoring system.
In present video monitoring system, the following several modes of video record retrieval normal operation realize:
Mode one: the destination that user selection need to be retrieved (certain stores service of certain front-end equipment or rear end), retrieval service send the video recording retrieval request to the destination, retrieving information is returned to retrieval service in the destination.
Mode two: the user directly sends search instruction, (the sequence inquiry refers to according to the place that may store retrieval service with the sequence inquiry, front-end equipment or back-end server, carry out one by one sequential search) or the mode of concurrent inquiry, (certain front-end equipment and each rear end stores service) sends the video recording retrieval request to the destination that might have the video record file, and retrieving information is returned to retrieval service separately in each destination.
But above dual mode all has certain limitation, and the method for mode one needs the clear and definite storage purpose of client ground, and if have the situations of a plurality of local storages, want to retrieve all video record files, need multi-pass operations just can finish.Although and the method for mode two is simple in operation, owing to need to a plurality of destinations be retrieved, need the long time, efficient is lower.
Summary of the invention
The features and advantages of the present invention are partly statement in the following description, perhaps can describe obviously from this, perhaps can learn by putting into practice the present invention.
The problems referred to above for the existence that solves prior art the invention provides a kind of video record search method, and the method comprises: client sends video record retrieval request message to distributed data base system;
Distributed data base system is carried out retrieval actions and result for retrieval is returned to client in response to video record retrieval request message;
Wherein, distributed data base system comprises at least one global data base management system, at least one local DBMS and at least one local data base.
As preferred embodiment, distributed data base system is carried out retrieval actions and result for retrieval is returned to client in response to video record retrieval request message and further comprises:
Near the global data base management system receiver, video video recording retrieval request message of client, by network video record retrieval request message is sent to intrasystem all global data base management systems;
Each global data base management system carries out the retrieval of video record file data to local data base by local DBMS;
Local DBMS returns to separately global data base management system with result for retrieval, and the global data base management system of initiating retrieval returns to client after the data of all global data base management systems are gathered.
As preferred embodiment, the method also comprises: with the video record File Upload of front end video recording equipment or rear end video recording equipment to distributed data base system.
As preferred embodiment, video record File Upload to the distributed data base system of front-end equipment is comprised:
Obtain the video record file stored on this equipment and compare with its data that before had been kept at local data base every schedule time forward end video recording equipment by acting server, newly-increased video record fileinfo is uploaded to local data base and/or video record fileinfo to be deleted is deleted at local data base.
As preferred embodiment, video record File Upload to the distributed data base system of rear end video recording equipment is comprised:
The rear end video recording equipment is when carrying out the video record store tasks, the video record fileinfo of storage is newly-increased to local data base, detect simultaneously rear end video recording equipment storage size, when detecting rear end video recording equipment storage space less than reservation threshold, carry out video recording liquidation task, video record fileinfo to be liquidated is deleted from local data base.
As preferred embodiment, front end video recording equipment refers to that video data directly is stored in the video recording equipment in the video recording equipment, and the rear end video recording equipment refers to the video recording equipment of Video Data Storage on the storage medium of special use.
The present invention also provides a kind of video record retrieval distributed data base system, comprising:
At least one local data base is used for the video record file that storage front end video recording equipment and rear end video recording equipment are uploaded;
At least one local DBMS is used for the management local data base, carries out the subquery of topical application and global application;
At least one global data base management system is used for the management local DBMS and coordinates execution, the concurrent control of each local data base data query, finishes topical application.
As preferred embodiment, this system also comprises acting server, with the front end video recording equipment connection, is used for supporting front end video recording equipment by the procotol between system's network element, network service between realization and each network element of system, the information that reads, arranges and manage front end video recording equipment.
As preferred embodiment, this system also comprises storage server, links to each other with local data base, is used for the mode by pressing the time video recording or pressing the video recording of reporting to the police, and realization is to the store and management of video record file.
The present invention also discloses a kind of video record searching system, comprises client and video record retrieval distributed data base system; Wherein, client is used for sending video record retrieval request message and receiving the result for retrieval that distributed data base system is returned to distributed data base system; Distributed data base system is used for carrying out retrieval actions and result for retrieval being returned to client in response to video record retrieval request message.
Realize having at least following advantage by technology of the present invention:
1, owing to having adopted distributed data base management system (DDBMS), so that user's operation is relatively simple.
2, by the retrieval mode of distributed data base, greatly improved effectiveness of retrieval.
3, the dirigibility of system is very high, retrieval that can compatible various storage modes.
4, be easy to expansion, by increasing database node, can support the situation of various application.
By reading instructions, those of ordinary skills will understand feature and the content of these technical schemes better.
Description of drawings
Below by describing particularly the present invention with reference to the accompanying drawings and in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in the accompanying drawing only is used for explanation of the present invention, and does not consist of the restriction of going up in all senses of the present invention, in the accompanying drawings:
Fig. 1 is the technical solution of the present invention process flow diagram.
Fig. 2 is the technical solution of the present invention system principle diagram.
Fig. 3 is distributed data base system theory diagram in the embodiment of the invention.
Fig. 4 is annexation synoptic diagram between LDB and each module in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described in further detail.
As shown in Figure 1, video record search method disclosed in this invention comprises the steps: at least
Distributed data base system wherein comprises at least one global data base management system (GDBMS, Global Data Base Management System), at least one local DBMS (LDBMS, Local Data Base Management System) and at least one local data base (LDB, Local Data Base).
The method also comprises, the video record File Upload of front end video recording equipment or rear end video recording equipment to distributed data base system, generally speaking, can be adopted mode regularly when uploading, also can be according to ad hoc rules with the video record File Upload to distributed data base system, adopt mode regularly, system processes relatively simple, but pattern is more rigid, adopt the mode of non-timed, process relative complex, but dirigibility is larger, real-time is stronger.Here said front end video recording equipment refers to that mainly video data directly is stored in the video recording equipment in the video recording equipment, such as equipment such as digital hard disc video recorder DVR, network hard disk video recorder NVR, the rear end video recording equipment mainly refers to the video recording equipment of Video Data Storage on the storage medium of special use, such as IPSAN(IP Storage Area Network) etc.Because the Video Data Storage mode of front end video recording equipment and rear end video recording equipment is different, so in the processing mode difference during to distributed data base system with the video record File Upload regularly.
For with the video record File Upload of the front end video recording equipment situation to distributed data base system, need to obtain the video record file stored on this equipment and compare with its previous data of preserving every the schedule time (this time can according to actual conditions by systemic presupposition or change) forward end video recording equipment by acting server, newly-increased video record fileinfo is uploaded to local data base and/or video record fileinfo to be deleted is deleted at local data base.The reason that needs to carry out Data Comparison here mainly is because there is certain requirement the front end video recording device storage time, also can be subject to simultaneously the restriction of storage space (hard disk size), so beginning a period of time, the video record file increases progressively, after arriving certain hour, up-to-date video recording will occur is increasing, while video recording meeting the earliest is deleted, so need to compare with the data that preserve this locality, can know just which is the video recording that increases newly, need to upload in the distributed data base system and go, which is the video information of deletion, need to delete from distributed data base system.
For with the video record File Upload of the rear end video recording equipment situation to distributed data base system, the rear end video recording equipment is when each execution video record store tasks, the video record fileinfo of storage is newly-increased to local data base, detect simultaneously rear end video recording equipment storage size, when detecting rear end video recording equipment storage space less than reservation threshold, carry out video recording liquidation task, the liquidation task refers to part is met the video file deletion of deletion condition, the whole video files of general deletion, the deletion condition can be time or hard drive space etc., such as will be above the video recording more than 1 month deletion, or at the video file of hard drive space deletion 10% less than 10% time.
In a preferred embodiment, distributed data base system is carried out retrieval actions in response to video record retrieval request message and the process that result for retrieval returns to client can specifically be refined as:
After certain client sends video record retrieval request message to the global data base management system, global data base management system near this client receives this video record retrieval request message, by network this video record retrieval request message is sent to intrasystem other all global data base management systems; Each global data base management system carries out the retrieval of video record file data by local DBMS to the local data base in the compass of competency separately; Local DBMS returns to separately global data base management system with result for retrieval, the global data base management system of initiating retrieval returns to client after the data of all global data base management systems are gathered, like this, just finished the retrieval work of whole video record file.The method so that the work of whole video record retrieval becomes convenient and swift, has improved the work efficiency of retrieval owing to adopted multi-level distributed data base system.
In order better the embodiment of this method to be done clearer detailed description, below the trans-regional global search that realizes in the situation that how to be implemented in multiple storage mode and to deposit video record is described as an example of special scenes example.
Embodiment one
Certain city 1 public security subbureau 1 has used the video monitoring system of analog-and digital-mixing, in the storage of front-end equipment, adopt the video data of DVR storage simulation camera and the video data of NVR storage digital camera (IPC), two kinds of equipment have all been realized 24 hours real-time recording, by the proxy for equipment service, all video file information in the equipment are uploaded in the distributed data base of branch office 1.In rear end storage, adopt IPSAN to receive to report to the police the mode of storage, when front end device IP C1 when 15:05 certain occurs and reports to the police, 30 seconds warning video recording before and after can autostore reporting to the police; By stores service, the video record fileinfo of reporting to the police is uploaded in the distributed data base of branch office 1.
If certain client wants to retrieve IPC1 all video files between 15:00-16:00, client sends the request message that video recording is retrieved to nearest GDBMS, and this GDBMS sends to all GDBMS as the promoter with this request; Each GDBMS sends the request of video recording retrieval to the LDBMS of administration; LDBMS obtains the data that meet this retrieval request from LDB, 1 the warning video file information that gets access to 1 hour video file information of in NVR, storing and in IPSAN, store, and data are returned to corresponding GDBMS, initiate to return to client after GDBMS gathers the data of all GDBMS.
Embodiment two
In certain city 1 public security subbureau 2, used digital video monitoring system, storage mode has adopted IPSAN to the complete real-time video recording in 24 hours of front end IPC and 30 seconds warning video recording of alarm generation, by stores service, real-time video video file information and warning video record fileinfo are uploaded in the distributed data base of branch office 2.If the public security city office client in city 1 wants to retrieve all warning video informations of 15:00-16:00 in the city, then the GDBMS of the public security city office client in city 1 city office in the city 1 sends the request of video recording retrieval, the GDBMS of this city office sends to this request as the promoter GDBMS of city 1 each branch office, each GDBMS sends the request of video recording retrieval to the LDBMS of administration, LDBMS obtains the data that meet this retrieval request from LDB, get access to branch office 1 and branch office 2 all should be in the time period warning video record information, and data are returned to corresponding GDBMS, initiate to return to city office client after GDBMS gathers the data of all GDBMS.
Simultaneously, the invention also discloses a kind of video record searching system based on above method, as shown in Figure 2, this system comprises at least:
Distributed data base system 202 is used for carrying out retrieval actions and result for retrieval being returned to client 201 in response to video record retrieval request message.
As shown in Figure 3, wherein distributed data base system comprises:
Global data base management system (GDBMS, Global Data Base Management System), be used for realization to the management of global data base, comprise: provide database distribution (mainly to refer to for the user in usage data storehouse, where data is transparent if being stored in, do not need the user to be concerned about what how data stored, what kind of data model is), coordinate the execution of global transaction (mainly referring to a plurality of local data bases are carried out the function of data query class), concurrent control, finish topical application, guarantee consistance and the restorability of global data base;
Local DBMS (LDBMS, Local Data Base Management System), be used for realization to the management of local data base, comprise the function that develops and manages local data bank, site autonomy ability (mainly refer to realize the Governance Ability to the database file of this locality, be included in the functions such as increase, deletion, modification and data query in the local data base) is provided, carries out the subquery of topical application and global application;
Local data base (LDB, Local Data Base) is used for realization to the data storage function of front end video recording equipment and rear end video recording equipment.
In the embodiment of the present invention, global data base management system (GDBMS, Global Data BaseManagement System), local DBMS (LDBMS, Local Data BaseManagement System) with local data base (LDB, Local Data Base) pass between is: local data base (LDB, Local Data Base) is a database, the container that is equivalent to a store data, local DBMS (LDBMS, Local Data Base ManagementSystem) be exactly to realize management local data base (LDB, Local Data Base) a instrument, and global data base management system (GDBMS, Global Data Base Management System) then be for to a plurality of local DBMS (LDBMS, Local Data BaseManagement System) carry out the instrument of network operation, the data of realization are synchronous, the instrument of the aspects such as convergence.What need to further specify is: client and local DBMS (LDBMS in a system, Local Data Base Management System), local DBMS (LDBMS, Local Data Base Management System) and local data base (LDB, Local Data Base) can be one or more, concrete number is according to the make out the scale of system, can expand according to real needs, therefore possess preferably extensibility.Wherein, client is directly to link to each other with global data base management system (GDBMS, Global Data Base Management System).And local data base (LDB, Local Data Base) then directly or indirectly links to each other with front end video recording equipment or rear end video recording equipment.Each local data base (LDB, Local Data Base) interconnects by network and forms a system, so that can intercom mutually between each module, network wherein can be LAN (Local Area Network), wide area network or the Internet.
As shown in Figure 4, as preferred embodiment, this system also comprises:
Acting server, this acting server distributes and front end video recording equipment and local data base (LDB, Local Data Base) is connected, be used for supporting front end video recording equipment by the procotol between each network element of system, network service between realization and each network element of system, the information that reads, arranges and manage front end video recording equipment.Acting server is mainly used in obtaining the information of front end video record, and is synchronized to local data base.Its benefit is that the video information that will be distributed in a plurality of front end video recording equipment all converges to local data base, and by the quick-searching of database realization to the video information in all front end video recording equipment, need not when the retrieval video recording, need to just can get access to video information with each front end video recording device talk.Storage server, this storage server distribute and are connected with rear end video recording equipment and local data base (LDB, Local Data Base), are used for passing through realizing the store and management to the video record file by the time video recording or by the mode of reporting to the police and recording a video.Be different from local data base institute canned data, storage server storage be concrete video file itself, realization is to functions such as the storage of video file, deletions; And the local data library storage is information about video file, i.e. the size of this video recording, start time, concluding time, deposit the information such as path, realizes the search function to video file information.Wherein, the way to manage of the video recording of reporting to the police is mainly for storage server, the storage that storage server mainly adopts two kinds of patterns to record a video, and a kind of is exactly pattern according to schedule, and some is until what time recorded a video to set every day; A kind of is exactly the video recording pattern of reporting to the police, the type of occur reporting to the police according to the front end video recording equipment exactly video recording of reporting to the police, and namely reporting to the police begins video recording when occuring, report to the police when finishing or the overtime rear end of reporting to the police is recorded a video.
Certainly, in a preferred embodiment, this storage server also can be connected with front end video recording equipment by a front end encoding device, and the video file of front end video recording equipment can by behind this front end encoding device coding, be stored in the storage server.
The front end encoding device links to each other with storage server with front end video recording equipment respectively, and Main Function is after the video record file that front end video recording equipment is recorded is passed through the coding of this equipment, to be stored in the storage server.The front end encoding device is the source that produces video recording as one of composition of system, after the front end encoding device can carry out digitized processing with real scene, generates the accessible data of computing machine, namely video file.
Wherein, local data base respectively with acting server with after storage server links to each other, link to each other with local DBMS again.
Realize by above technology, solved under the simultaneous complex situations of multiple storage mode, realize that client to the problem of the unified retrieval of video record file, therefore has following advantage at least: owing to adopted distributed data base management system (DDBMS), so that user's operation is relatively simple; By the retrieval mode of distributed data base, greatly improved effectiveness of retrieval; The dirigibility of system is very high, retrieval that can compatible various storage modes; Be easy to expansion, by increasing database node, can support the situation of various application.
More than with reference to the accompanying drawings of the preferred embodiments of the present invention, those skilled in the art do not depart from the scope and spirit of the present invention, and can have multiple flexible program to realize the present invention.For example, the feature that illustrates or describe as the part of an embodiment can be used for another embodiment to obtain another embodiment.Below only for the better feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalence that all utilizations instructions of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (10)
1. a video record search method is characterized in that, comprising:
Client sends video record retrieval request message to distributed data base system;
Described distributed data base system is carried out retrieval actions and result for retrieval is returned to described client in response to described video record retrieval request message;
Wherein, described distributed data base system comprises at least one global data base management system, at least one local DBMS and at least one local data base.
2. video record search method according to claim 1 is characterized in that, described distributed data base system is carried out retrieval actions and result for retrieval is returned to described client in response to described video record retrieval request message and further comprises:
Global data base management system near client receives described video record retrieval request message, by network described video record retrieval request message is sent to intrasystem all global data base management systems;
Each global data base management system carries out the retrieval of video record file data to local data base by local DBMS;
Described local DBMS returns to separately global data base management system with result for retrieval, and the global data base management system of initiating retrieval returns to client after the data of all global data base management systems are gathered.
3. video record search method according to claim 1 and 2 is characterized in that, also comprises: with the video record File Upload of front end video recording equipment or rear end video recording equipment to distributed data base system.
4. video record search method according to claim 3 is characterized in that, described video record File Upload to distributed data base system with front-end equipment comprises:
Obtain the video record file stored on this equipment and compare with its data that before had been kept at local data base every schedule time forward end video recording equipment by acting server, newly-increased video record fileinfo is uploaded to local data base and/or video record fileinfo to be deleted is deleted at local data base.
5. video record search method according to claim 3 is characterized in that, described video record File Upload to distributed data base system with the rear end video recording equipment comprises:
Described rear end video recording equipment is when carrying out the video record store tasks, the video record fileinfo of storage is newly-increased to described local data base, detect simultaneously rear end video recording equipment storage size, when detecting described rear end video recording equipment storage space less than reservation threshold, carry out video recording liquidation task, video record fileinfo to be liquidated is deleted from described local data base.
6. video record search method according to claim 3, it is characterized in that, described front end video recording equipment refers to that video data directly is stored in the video recording equipment in the video recording equipment, and the rear end video recording equipment refers to the video recording equipment of Video Data Storage on the storage medium of special use.
7. a video record retrieval distributed data base system is characterized in that, comprising:
At least one local data base is used for the video record file that storage front end video recording equipment and rear end video recording equipment are uploaded;
At least one local DBMS is used for managing described local data base, carries out the subquery of topical application and global application;
At least one global data base management system is used for managing described local DBMS and coordinates the execution of each local data base data query, concurrent control, finishes topical application.
8. video record according to claim 7 is retrieved distributed data base system, it is characterized in that, also comprise acting server, with the front end video recording equipment connection, be used for supporting front end video recording equipment by the procotol between system's network element, network service between realization and each network element of system, the information that reads, arranges and manage front end video recording equipment.
9. according to claim 7 or 8 described video records retrieval distributed data base systems, it is characterized in that, also comprise storage server, link to each other with described local data base, be used for the mode by pressing the time video recording or pressing the video recording of reporting to the police, realization is to the store and management of video record file.
10. a video record searching system is characterized in that, comprises client and retrieves distributed data base system such as each described video record of claim 7-9; Wherein, described client is used for sending video record retrieval request message and receiving the result for retrieval that described distributed data base system is returned to described distributed data base system; Described distributed data base system is used for carrying out retrieval actions and result for retrieval being returned to described client in response to described video record retrieval request message.
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