CN102231821A - Data storage method applied in remote video monitoring system and system thereof - Google Patents
Data storage method applied in remote video monitoring system and system thereof Download PDFInfo
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Abstract
The invention discloses a data storage method applied in a remote video monitoring system and a system thereof. The method includes the following steps that: front end video equipment creates pre-recorded cache regions respectively for each camera which is connected with the front end video equipment; when satisfying a video storage trigger condition, a center server requests pre-recorded video data and real-time video data from the corresponding front end video equipment; the front end video equipment sends the pre-recorded video data and the real-time video data to the center server. In the data storage method and the system applied in a remote video monitoring system, a pre-recorded video function during center server concentration storage is arranged in the front end video equipment. Compared to the prior art, by using the method and the system of the invention, network bandwidth can be minimized, burden of the center server can be substantially reduced and access capability of the front end video equipment during the center server concentration storage can be raised in a certain degree.
Description
Technical field
The present invention relates to video data server centered field of storage, relate in particular to a kind of date storage method and system that is applied to Active Eyes.
Background technology
In the monitoring remote video field, the storage of video data is most important, stores and the centralized stores of local storage of sub-headend equipment and central server.The centralized stores of central server has following several different storage mode again, for example all-weather storage, regularly storage and Event triggered storage etc., the Event triggered form of wherein said Event triggered storage has following several: mobile detection alarm, switching value alarm, intellectual analysis alarm, the 3rd platform video recording request etc.
For the storage of above-mentioned Event triggered, in order to allow the video preservation incident of a storage more complete process before and after taking place, need the video preprocessor recording function, when after Event triggered, carrying out video storage, the video of pre-recording formally write in the disk preserved.
At present in the main flow Active Eyes, central server is handled the way that video is pre-recorded: at the every road video of central server for needing to record a video after Event triggered, create a 5MB (length is by the size decision of the duration of pre-recording, code stream) buffer memory and preserve pre-recorded videos, the video data of the receiving front-end equipment that central server is real-time and upgrade is pre-recorded is stored in video in this buffer memory, after Event triggered, the buffer memory video content of pre-recording formally write in the disk preserve.Here suppose that every road video cache size is 5MB, every road video average bit rate 512kbps, the store method of that present pre-recorded videos have two kinds:
1, in internal memory, preserves pre-recorded videos.
Usually, it is about 2G that operating system is opened the free memory of keeping away for each process, the memory headroom of we general available 1.5GB is preserved pre-recorded videos like this, and access capacity is: 1.5*1024/5=300, as seen adopt this method probably can insert about 300 tunnel camera.
2, in disk, create a temporary file buffer memory to preserve pre-recorded videos.
The method of this establishment temporary file buffer memory has sizable related with the bandwidth of dish battle array, for example the SCSI-SATA of main flow coils the battle array actual bandwidth between 150-250MB at present, FC-SATA dish battle array actual bandwidth is between 200-350MB, iSCSI-SATA dish battle array actual bandwidth is between 80-150MB, roughly draw the actual bandwidth of present some main flow dish battle arrays the chances are 100MB/S by above-mentioned data, and, this bandwidth generally refers to the sequential write bandwidth, be generally about 20MB/s and write bandwidth at random, because buffer update is with the machine-readable concurrent characteristics such as randomness that write, make and effectively write bandwidth near writing bandwidth at random, be 20M/S, it is 20*8*1024/512=320 that counting draws the video access capability, as seen adopts this method can insert the about 320 tunnel cameras.
From the store method of above pre-recorded videos, can draw, the access capacity of present single central server is about 300 the tunnel, but in actual moving process, because every road video has all started real-time video, and because all videos all converge to this central server, be not difficult to obtain by analysis, the network bandwidth pressure of central server is: 512*300/1024=150Mbps.As seen, adopt the store method of above-mentioned pre-recorded videos, need take a large amount of network bandwidths, cpu resource, memory source or dish battle array resource and handle pre-recorded videos, cause the waste of central server resource to a certain extent, and reduced the access capacity of central server.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of date storage method and system that is applied to Active Eyes, and it can reduce the burden of central server, and and minimizing network traffics.
In order to achieve the above object, the embodiment of the invention is by the following technical solutions:
A kind of date storage method that is applied to Active Eyes comprises:
A, front end video equipment are that the connected camera in every road is created the buffer area of pre-recording respectively;
B, central server are when reaching the video storage trigger condition, to the front end video equipment request pre-recorded videos data and the real time video data of correspondence;
C, described front end video equipment transmission pre-recorded videos data and real time video data are to described central server.
Preferably, in described steps A, the described buffer area real-time update of pre-recording is stored into the video data that the camera by correspondence is wherein gathered.
Preferably, described step B comprises:
B1, central server judge according to the trigger event of receiving whether it satisfies the video storage trigger condition, if satisfy, then change the B2 step over to, if do not satisfy, then keep ortho states;
B2, central server are set up pre-recorded videos code stream communication channel and real-time video code stream communication channel with corresponding front end video equipment, and are sent pre-recorded videos data request information and real time video data request message respectively.
More preferably, described step C comprises:
C1, front end video equipment are according to the described pre-recorded videos data request information of receiving, send the pre-recorded videos data to described central server by described pre-recorded videos code stream communication channel, according to the described real time video data request message of receiving, send real time video data to described central server by described real-time video code stream communication channel;
C2, described central server carry out data merging processing to described pre-recorded videos data that receive and real time video data.
More preferably, in described step C2, described central server carries out data according to timestamp information in the described pre-recorded videos data frame of video that receives and the timestamp information in the real time video data frame of video and merges processing.
Preferably, the described date storage method that is applied to Active Eyes also comprises:
D, when described front end video equipment reaches the data that set in advance and sends termination condition, stop to send pre-recorded videos data and real time video data to described central server.
More preferably, described data send termination condition and comprise: arrive the concluding time of regularly recording a video, the third party stops the video recording request.
Preferably, among the described step B, described video storage trigger condition comprises: the alarm, third party's alarm or the third party that arrive regularly video time, front end video equipment begin the video recording request.
A kind of Active Eyes, comprise front end video equipment and central server, wherein, described front end video equipment is that the connected camera in every road is created the buffer area of pre-recording respectively, described central server is when reaching the video storage trigger condition, send pre-recorded videos data request information and real time video data request message respectively with request pre-recorded videos data and real time video data to the front end video equipment of correspondence, described front end video equipment sends pre-recorded videos data and real time video data to described central server according to described request message.
Preferably, described central server comprises video request unit and video merge cells, wherein,
The video request unit is used for when reaching the video storage trigger condition, sends pre-recorded videos data request information and real time video data request message respectively with request pre-recorded videos data and real time video data to the front end video equipment of correspondence;
The video merge cells is used for carrying out data and merging and handle look closely pre-recorded videos data that equipment frequently receives and real time video data in the past.
Preferably, described leading portion video equipment comprises the pre-record module and the administration module of pre-recording, wherein,
The module of pre-recording, the real-time update pre-recorded videos data in the buffer area of pre-recording;
The administration module of pre-recording responds pre-recorded videos data request information and real time video data request message that described central server sends, obtains the pre-recorded videos data of response and be sent to central server from the described module of pre-recording.
According to the technical scheme of the invention described above embodiment as can be seen, the date storage method that is applied to Active Eyes that the embodiment of the invention provides, video preprocessor recording function during with the central server centralized stores is arranged in the front end video equipment, for example described front end video equipment is IP video camera or video encoder etc., when the needs central server is recorded a video, central server forward end video equipment obtains pre-recorded videos data and real time video data, and pre-recorded videos data and real time video data are merged into one section video file store in the disk, video recording stops to receive pre-recorded videos data and real time video data when finishing, thereby than prior art, reduced the network bandwidth, and the burden of central server, the access capability of the front end video equipment in the time of can improving the central server centralized stores have to a certain extent been significantly reduced.
Description of drawings
Fig. 1 is the networking schematic diagram of the Active Eyes that provides of the embodiment of the invention;
Fig. 2 is the method flow diagram of the date storage method that is applied to Active Eyes that provides of the embodiment of the invention;
Fig. 3 is the video request flow chart of the central server forward end video equipment request video that provides of the embodiment of the invention;
Fig. 4 is the flow chart of data processing figure that video data that the central server that provides of the embodiment of the invention sends the front end video equipment is handled.
The realization of the object of the invention, functional characteristics and excellent effect are described further below in conjunction with specific embodiment and accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
This invention is specially adapted to carry out the Active Eyes that video data is concentrated storage administration, especially in the Active Eyes of Event triggered storage, basic foundations station long-distance video anti-thefting monitoring as operator, these National Personnel Records Center, Civilian Persons are flowed less, alarm event is few, do not need round-the-clock video recording, only need carry out triggering this central server and carrying out video storage after the incidents such as mobile detection alarm or switching value alarm at the leading portion video equipment.
According to one embodiment of the invention, as shown in Figure 2, a kind of date storage method that is applied to Active Eyes that it provides comprises the steps:
S10, front end video equipment are that the connected camera in every road is created the buffer area of pre-recording respectively;
S20, central server are when reaching the video storage trigger condition, to the front end video equipment request pre-recorded videos data and the real time video data of correspondence;
S30, described front end video equipment transmission pre-recorded videos data and real time video data are to described central server.
Preferably, in described step S10, the described buffer area real-time update of pre-recording is stored into the video data that the camera by correspondence is wherein gathered.
Preferably, as shown in Figure 3, described step S20 comprises:
S201, central server judge according to the trigger event of receiving whether it satisfies the video storage trigger condition, if satisfy, then change the S202 step over to, if do not satisfy, then keep ortho states;
S202, central server are set up pre-recorded videos code stream communication channel and real-time video code stream communication channel with corresponding front end video equipment, and are sent pre-recorded videos data request information and real time video data request message respectively.
Among the described step S20, described video storage trigger condition comprises: arrive the regularly alarm of video time, front end video equipment (for example mobile detection alarm, switching value alarm etc.), third party's alarm or third party and begin the video recording request.Described video storage trigger condition is stored in the database of central server, when the video storage trigger condition that meets above-mentioned condition produces, the corresponding camera of the front end video equipment of central server search response, and to its corresponding front end video equipment request video, thereby finish recording function.
More preferably, as shown in Figure 4, described step S30 comprises:
S301, front end video equipment are according to the described pre-recorded videos data request information of receiving, send the pre-recorded videos data to described central server by described pre-recorded videos code stream communication channel, according to the described real time video data request message of receiving, send real time video data to described central server by described real-time video code stream communication channel;
S302, described central server carry out data merging processing to described pre-recorded videos data that receive and real time video data.
More preferably, in described step S302, described central server carries out data according to timestamp information in the described pre-recorded videos data frame of video that receives and the timestamp information in the real time video data frame of video and merges processing.
Continuation is with reference to Fig. 2, and preferably, the described date storage method that is applied to Active Eyes also comprises:
S40, when described front end video equipment reaches the data that set in advance and sends termination condition, stop to send pre-recorded videos data and real time video data to described central server.
In specific implementation process, more preferably, described data send termination condition and comprise: arrive the concluding time of regularly recording a video, the third party stops the video recording request.When described front end video equipment reaches this data that set in advance and sends termination condition, promptly this front end video equipment disconnect with central server between be connected, stop to send pre-recorded videos data and real time video data to described central server.
The present invention also provides a kind of Active Eyes, according to one embodiment of the invention, as shown in Figure 1, described Active Eyes comprises front end video equipment 1 and central server 2, wherein, described front end video equipment 1 is created the buffer area of pre-recording respectively for the connected camera in every road, described central server 2 is when reaching the video storage trigger condition, send pre-recorded videos data request information and real time video data request message respectively with request pre-recorded videos data and real time video data to the front end video equipment 1 of correspondence, described front end video equipment 1 sends pre-recorded videos data and real time video data to described central server 2 according to described request message.
In the actual application, described front end video equipment 1 distributed and described central server 2, described a plurality of front end video equipment 1 carries out transfer of data by switch 3 and described central server 2, data transmission network can be varied, for example described data transmission network is IP network road etc., here to do not do too much and give unnecessary details.
Preferably, described central server 2 comprises video request unit 23 and video merge cells 22, wherein,
Video merge cells 22 is used for carrying out data and merging and handle look closely pre-recorded videos data that equipment 1 frequently receives and real time video data in the past.Afterwards, described video merge cells 22 will merge the target video recording that obtains after handling and deposit in the disk array 21 of central server 2.
Preferably, described leading portion video equipment 1 comprises the pre-record module 11 and the administration module 12 of pre-recording, wherein,
The module 11 of pre-recording, the real-time update pre-recorded videos data in the buffer area of pre-recording;
The administration module 12 of pre-recording responds pre-recorded videos data request information and real time video data request message that described central server 2 sends, obtains the pre-recorded videos data of response and be sent to central server 2 from the described module 11 of pre-recording.
According to the technical scheme of the invention described above embodiment as can be seen, the date storage method that is applied to Active Eyes that the embodiment of the invention provides, video preprocessor recording function during with the central server centralized stores is arranged in the front end video equipment, for example described front end video equipment is IP video camera or video encoder etc., when the needs central server is recorded a video, central server forward end video equipment obtains pre-recorded videos data and real time video data, and pre-recorded videos data and real time video data are merged into one section video file store in the disk, video recording stops to receive pre-recorded videos data and real time video data when finishing, thereby than prior art, reduced the network bandwidth, and the burden of central server, the access capability of the front end video equipment in the time of can improving the central server centralized stores have to a certain extent been significantly reduced.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (11)
1. a date storage method that is applied to Active Eyes is characterized in that, comprising:
A, front end video equipment are that the connected camera in every road is created the buffer area of pre-recording respectively;
B, central server are when reaching the video storage trigger condition, to the front end video equipment request pre-recorded videos data and the real time video data of correspondence;
C, described front end video equipment transmission pre-recorded videos data and real time video data are to described central server.
2. the date storage method that is applied to Active Eyes as claimed in claim 1 is characterized in that, in described steps A, the described buffer area real-time update of pre-recording is stored into the video data that the camera by correspondence is wherein gathered.
3. the date storage method that is applied to Active Eyes as claimed in claim 1 is characterized in that, described step B comprises:
B1, central server judge according to the trigger event of receiving whether it satisfies the video storage trigger condition, if satisfy, then change the B2 step over to, if do not satisfy, then keep ortho states;
B2, central server are set up pre-recorded videos code stream communication channel and real-time video code stream communication channel with corresponding front end video equipment, and are sent pre-recorded videos data request information and real time video data request message respectively.
4. the date storage method that is applied to Active Eyes as claimed in claim 3 is characterized in that, described step C comprises:
C1, front end video equipment are according to the described pre-recorded videos data request information of receiving, send the pre-recorded videos data to described central server by described pre-recorded videos code stream communication channel, according to the described real time video data request message of receiving, send real time video data to described central server by described real-time video code stream communication channel;
C2, described central server carry out data merging processing to described pre-recorded videos data that receive and real time video data.
5. the date storage method that is applied to Active Eyes as claimed in claim 4, it is characterized in that, in described step C2, described central server carries out data according to timestamp information in the described pre-recorded videos data frame of video that receives and the timestamp information in the real time video data frame of video and merges processing.
6. the date storage method that is applied to Active Eyes as claimed in claim 1 is characterized in that, also comprises:
D, when described front end video equipment reaches the data that set in advance and sends termination condition, stop to send pre-recorded videos data and real time video data to described central server.
7. the date storage method that is applied to Active Eyes as claimed in claim 6 is characterized in that, described data send termination condition and comprise: arrive the concluding time of regularly recording a video, the third party stops the video recording request.
8. the date storage method that is applied to Active Eyes as claimed in claim 1, it is characterized in that, among the described step B, described video storage trigger condition comprises: the alarm, third party's alarm or the third party that arrive regularly video time, front end video equipment begin the video recording request.
9. Active Eyes, comprise front end video equipment and central server, it is characterized in that, described front end video equipment is that the connected camera in every road is created the buffer area of pre-recording respectively, described central server is when reaching the video storage trigger condition, send pre-recorded videos data request information and real time video data request message respectively with request pre-recorded videos data and real time video data to the front end video equipment of correspondence, described front end video equipment sends pre-recorded videos data and real time video data to described central server according to described request message.
10. Active Eyes as claimed in claim 9 is characterized in that, described central server comprises video request unit and video merge cells, wherein,
The video request unit is used for when reaching the video storage trigger condition, sends pre-recorded videos data request information and real time video data request message respectively with request pre-recorded videos data and real time video data to the front end video equipment of correspondence;
The video merge cells is used for carrying out data and merging and handle look closely pre-recorded videos data that equipment frequently receives and real time video data in the past.
11. Active Eyes as claimed in claim 9 is characterized in that, described leading portion video equipment comprises the pre-record module and the administration module of pre-recording, wherein,
The module of pre-recording, the real-time update pre-recorded videos data in the buffer area of pre-recording;
The administration module of pre-recording responds pre-recorded videos data request information and real time video data request message that described central server sends, obtains the pre-recorded videos data of response and be sent to central server from the described module of pre-recording.
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Application publication date: 20111102 |