CN104639796B - A kind of monitoring server and its method for controlling video source device time synchronized - Google Patents
A kind of monitoring server and its method for controlling video source device time synchronized Download PDFInfo
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- CN104639796B CN104639796B CN201310558027.8A CN201310558027A CN104639796B CN 104639796 B CN104639796 B CN 104639796B CN 201310558027 A CN201310558027 A CN 201310558027A CN 104639796 B CN104639796 B CN 104639796B
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Abstract
The embodiment of the invention discloses a kind of synchronous method of monitoring server and its control time, because monitoring server is in the case where that can get the current time of the external equipment, current time to be obtained from external equipment is used as present system time, otherwise the current time according to each video source device being connected with itself determines present system time, embedded time module is eliminated, so as to reduce the cost of monitoring server equipment and ensure that the time synchronized of whole system.
Description
Technical field
The present invention relates to video monitoring and communication technical field, more particularly to a kind of monitoring server and its control video source
The method of equipment time synchronized.
Background technology
Video monitoring system is the important component of safety and protection system, including video source device, transmission cable, video
Monitoring server.Video monitoring system is enriched with its directly perceived, accurate, timely and information content and is widely used in many occasions.
In video monitoring system, the connected video source device of video monitoring server remote monitoring, and use open type soft
Hardware platform and standard or common interface protocol, its extended capability is stronger, being capable of the digital, networking, systematization, more with future
The systems such as channel resource is shared are mutually connected.
At present, video monitoring server mainly provides system clock by embedded time module, and it is synchronous it is all with
The current time of its video source device connected, so as to realize the synchronization of system time.
Inventor has found existing monitoring server control video source device time synchronized during the present invention is realized
Following defect at least be present in scheme：
1st, because embedded clock module needs to ensure to provide accurate system clock using complicated clock synchronizing method, lead
Cause the cost of monitoring server too high；
If the 2, omitting embedded clock module, directly using clock signal caused by local clock as system clock, then monitor
The connected video source device of server apparatus（Such as IPC）Time of whole equipment system can not keep synchronous.
The content of the invention
The embodiments of the invention provide a kind of monitoring server and its control video source device time synchronized method, to
Reduce the cost of monitoring server and ensure the time synchronized of whole equipment system.
A kind of synchronous method of monitoring server control time is provided in the embodiment of the present invention, including：
Monitoring server detects whether to be connected to the external equipment for providing the standard time；
It is no if so, then obtaining the current time of the external equipment and using the current time as present system time
Then, according to the current time for each video source device being connected with itself, present system time is determined；
The current time for each video source device being connected with itself is adjusted to the present system time.
The external equipment is NTP ntp server.
Preferably, if the current time of the external equipment can not be got, and itself is not connected with any video source device,
Further comprise：
Detect whether to be connected to the external equipment that the standard time is provided again behind the setting time interval of interval.
The present embodiment can neither from external equipment obtain current time again can not be according to the current time of video source device
In the case of determining system time, repeat above-mentioned detection process and preferentially detect whether to be connected to the outer of offer standard time
Portion's equipment.
Preferably, according to the current time for each video source device being connected with itself, present system time is determined, including：
The current time for each video source device being connected with itself is sorted according to time order and function；
The time difference of the adjacent current time of each two is obtained, obtains time difference sequence；
By one of two adjacent current times corresponding to the least absolute value in time difference sequence, during as current system
Between；Or by any one time between two adjacent current times corresponding to least absolute value, as present system time.
Appointing between one of adjacent current time or adjacent current time corresponding to least absolute value in time difference sequence
Anticipate a time, substantially time closest to the standard time, the external equipment that can not be obtained it is current when
Between in the case of, ensure and the standard time between error minimum even without error.
Preferably, when only having a least absolute value in the time difference sequence, by two corresponding to the least absolute value
One of individual adjacent current time, as present system time.
Preferably, when there are multiple least absolute values in the time difference sequence, determine that continuous appearance is most in time difference sequence
The most sequence subsegment of small absolute value number；
By one of two adjacent current times corresponding to any one least absolute value in the sequence subsegment, as current system
Unite the time.
Preferably, will in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value,
As present system time.
According to the above method, the embodiments of the invention provide a kind of monitoring server, including：
Detection unit, for detecting whether being connected to the external equipment for providing the standard time；
Determining unit, for obtaining the current time of the external equipment and using the current time as during current system
Between；When can not obtain the current time of the external equipment, according to the current of each video source device being connected with monitoring server
Time, determine present system time；
Adjustment unit, for the current time for each video source device being connected with monitoring server to be adjusted into described current
System time.
Preferably, the external equipment is NTP ntp server.
Preferably, if the current time of the external equipment can not be got, and itself is not connected with any video source device,
The determining unit is further used for detecting whether to be connected to offer mark again after notifying detection unit interval setting time interval
External equipment between punctual.
Preferably, determining unit is specifically used for：
The current time of each video source device with itself is sorted according to time order and function；
The time difference of the adjacent current time of each two is obtained, obtains time difference sequence；
By one of two adjacent current times corresponding to the least absolute value in time difference sequence, during as current system
Between；Or by any one time between two adjacent current times corresponding to least absolute value, as present system time.
Preferably, the determining unit is specifically used for：
In the time difference sequence only have a least absolute value when, by two corresponding to the least absolute value it is adjacent work as
One of preceding time, as present system time.
Preferably, the determining unit is specifically used for：
When there are multiple least absolute values in the time difference sequence, determine continuously occur least absolute value in time difference sequence
The most sequence subsegment of number；
By one of two adjacent current times corresponding to any one least absolute value in the sequence subsegment, as current system
Unite the time.
Preferably, the determining unit is specifically used for：
Will be in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value, as current
System time.
In the above embodiment of the present invention, because monitoring server can get the current time of the external equipment
In the case of, using the current time that is obtained from external equipment as present system time, otherwise according to each video being connected with itself
The current time of source device determines present system time, eliminates embedded time module, is set so as to reduce monitoring server
Standby cost simultaneously ensure that the time synchronized of whole system.
Brief description of the drawings
Fig. 1 is the synchronous method flow diagram of monitoring server control time provided in an embodiment of the present invention；
Fig. 2 is the side that the current time provided in an embodiment of the present invention according to each video source device determines present system time
Method flow chart；
Fig. 3 is monitoring server structural representation provided in an embodiment of the present invention.
Embodiment
The embodiments of the invention provide a kind of monitoring server and its control video source device time synchronized method, to
Reduce the cost of monitoring server and ensure the time synchronized of whole equipment system.The embodiment of the present invention is retouched in detail below
State.
As shown in figure 1, the method that monitoring server control time provided in an embodiment of the present invention is synchronous, mainly including following
Step：
Step 101, monitoring server detects whether to be connected to the external equipment for providing the standard time, if so, performing step
102, otherwise perform step 103；
Monitoring server preferentially detects whether to be connected to the external equipment for providing the standard time.Here standard time refers to
There is no time error to ensure each equipment synchronous time.
Preferably, said external equipment is NTP ntp server, and the standard time is NTP
The current time of ntp server.
Monitoring server detects whether to be connected to the ntp server for providing the standard time, if detection is connected to the NTP clothes
Business device, it is determined that the standard time can be got；If detection is not attached to the ntp server, it is determined that can not get standard
Time.
On monitoring server after electricity, a backstage detection routine can be opened, detecting network by backstage detection routine connects
Connect and judge whether to be connected to ntp server.
Step 102, the current time of the external equipment is obtained and using the current time as present system time；
Step 103, determine whether itself connects video source device, if so, performing step 104；
Step 104, according to the current time for each video source device being connected with itself, present system time is determined；
Step 105, the current time for each video source device being connected with itself is adjusted to the present system time.
Preferably, in step 103, however, it is determined that itself is not connected with any video source device, then after being spaced setting time interval
Return to step 101 detects whether to be connected to the external equipment for providing the standard time again.
Preferably, the testing process before the system time of monitoring server is determined is examined by the backstage of monitoring server
Test case journey is realized, after present system time is determined, closes the detection routine.
The above method provided in an embodiment of the present invention is applied to the monitoring server of video monitoring system, the video monitoring system
System mainly includes：Monitoring server, the external equipment that the standard time is provided（Such as ntp server）, be connected with monitoring server
Each video source device.
Monitoring server of the embodiment of the present invention eliminates embedded time module, i.e., is not carried by embedded time module
For the system clock of monitoring server, because monitoring server eliminates embedded clock module, monitoring server power-off weight
Qi Hou, its system time are some improper value, in order that the time of whole video monitoring system keeps synchronous, monitoring server needs
The unified time is obtained, this will use outside time source device to provide the system clock of monitoring server, and together
The current time of all video source devices being connected with monitoring server is walked, so as to reduce the cost of monitoring server and guarantee
The time synchronized of whole system.Outside time source device includes the external equipment for providing the standard time（Preferably NTP is serviced
Device）Or the multiple video source devices being connected with monitoring server（Such as IPC）.
Communicated between monitoring server and ntp server by Network Time Protocol, so that whole video monitoring system
Time synchronization.
When the current time of the external equipment can not be got, it is necessary to according to each video being connected with monitoring server
The current time of source device, determines present system time, and its method flow is as shown in Fig. 2 can be, but not limited to use such as lower section
Formula：
Step 201, the current time for each video source device being connected with monitoring server is sorted according to time order and function；
It can from front to back sort, can also be sorted from back to front according to the time according to the time.
Step 202, the time difference of the adjacent current time of each two is obtained, obtains time difference sequence；
For the adjacent current time of each two, you can to calculate previous current time and latter current time, also may be used
To calculate the difference of latter time and previous time.
When calculating the time difference, the sequence based on current time, it is adjacent to obtain each two successively from front to back or from back to front
The time difference of current time.
Step 203, by one of two adjacent current times corresponding to the least absolute value in time difference sequence, as current
System time；Or by any one time between two adjacent current times corresponding to least absolute value, as current system
Time.
The time difference of two adjacent current times is minimum, the two current times closest to the real time likelihood ratio compared with
Greatly, therefore any one time between one of the two adjacent current times or adjacent current time is may be referred to, it is determined that working as
Preceding system time.
The least absolute value occurred in time difference sequence（That is the absolute value minimum time difference）It may be one, it is also possible to be
It is multiple, preferred embodiment is provided separately below：
1）Only has a least absolute value in time difference sequence
By one of two adjacent current times corresponding to the least absolute value, as present system time.
Assuming that the current time of each video source device obtained is TN, wherein N=1,2 ... N, N are monitoring server connection
Video source device number, by T1、T2、…、TNSorted according to time order from small to large, it is assumed that the time series after sequence is
Ts1、Ts2、……、TsN；
The time difference of the adjacent current time of each two in above-mentioned time series is obtained, it is T to obtain time difference sequences2-Ts1、
Ts3-Ts2、……、TsN-Ts(N-1), it is abbreviated as sequence：Tds1、Tds2、……、Tds(N-1), take Tds1、Tds2、……、Tds(N-1) in absolutely
To the time difference T that value is minimumdsm,（M can take 1,2 ..., N-1）；
If there was only the minimum time difference T of an absolute value in time difference sequencedsm, then T is takensFor TsmOr Ts(m+1)。
It is of course also possible to by the arbitrary time between two adjacent current times corresponding to the least absolute value
As present system time.
2）There are multiple least absolute values in time difference sequence
Determine continuously occur the most sequence subsegment of least absolute value number in time difference sequence；It will appoint in the sequence subsegment
Anticipate one of two adjacent current times corresponding to a least absolute value, as present system time.
It should be noted that：If only having one comprising the most sequence subsegment of least absolute value number, by sequence
One of two adjacent current times corresponding to any one least absolute value in section, as present system time；If include minimum
The most sequence subsegment of absolute value number have it is multiple, then by any one least absolute value in any one subsegment in multiple subsegments
One of corresponding two adjacent current times, as present system time.
Preferably, will in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value,
As present system time.
In above-mentioned preferred embodiment, if containing odd number least absolute value in the sequence subsegment, by sequence
Positioned at one of two adjacent current times corresponding to middle least absolute value in section, as present system time；If the sequence
Contain even number least absolute value in subsegment, then will be located at any one in two middle least absolute values in the sequence subsegment
One of two adjacent current times corresponding to least absolute value, as present system time.
In specific implementation, if there is the minimum time difference T of M absolute value in time difference sequencedsm, M absolute value is minimum
Time difference is X section, wherein the T continuously occurreddsmAs a segmentation, the T individually occurreddsmA segmentation is also served as, often
The time difference number of absolute value minimum in individual segmentation is respectively c1、c2、……、cX, and c1+c2+……+cX=M, if c1、
c2、……、cXMiddle maximum is cmax, then maximum number is set as cmaxThe element of centre of this segmentation be Tdsx, by TsIf
It is set to TsxOr Ts(x+1)。
It is of course also possible to by TdsxAny one time between corresponding two adjacent current times is as current system
Time.
It should be noted that：Even there is the minimum time difference T of M absolute value in time difference sequencedsmIf M absolute value is most
Small time difference TdsmIt is discontinuous to occur, then by TsIt is arranged in M absolute value minimum time difference any one absolute value most
One of two adjacent current times corresponding to the small time difference.
Based on identical technical concept, the embodiment of the present invention additionally provides a kind of monitoring server, because the equipment solves
The principle of the problem a kind of method synchronous with monitoring server control time is similar, therefore the implementation of the equipment may refer to method
Implementation, repeat part repeat no more.
The embodiment of the present invention additionally provides a kind of monitoring server equipment, structural representation as shown in figure 3, including：
Detection unit 301, for detecting whether being connected to the external equipment for providing the standard time；
Determining unit 302, for obtaining the current time of the external equipment and using the current time as current system
Unite the time；When can not obtain the current time of the external equipment, according to each video source device being connected with monitoring server
Current time, determine present system time；
Adjustment unit 303, for the current time for each video source device being connected with monitoring server to be adjusted into described
Present system time.
Generally, the external equipment is NTP ntp server.
In specific implementation, if the current time of the external equipment can not be got, and itself is not connected with any video source
Equipment, the determining unit 302 are further used for detecting whether to connect again after notifying detection unit interval setting time interval
To the external equipment for providing the standard time.
In specific implementation, determining unit 302 is specifically used for：
The current time for each video source device being connected with itself is sorted according to time order and function；
The time difference of the adjacent current time of each two is obtained, obtains time difference sequence；
By one of two adjacent current times corresponding to the least absolute value in time difference sequence, during as current system
Between；Or by any one time between two adjacent current times corresponding to least absolute value, as present system time.
In specific implementation, the determining unit 302 is specifically used for：
It is adjacent by two corresponding to the least absolute value when only having a least absolute value in the time difference sequence
One of current time, as present system time.
When there are multiple least absolute values in the time difference sequence, determine that continuous appearance is minimum definitely in time difference sequence
It is worth the most sequence subsegment of number；
By one of two adjacent current times corresponding to any one least absolute value in the sequence subsegment, as current system
Unite the time.
Preferably, the determining unit 302 is specifically used for：
Will be in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value, as current
System time.
The dividing mode of function above unit or module is only a kind of preferred implementation that the embodiment of the present invention provides, work(
The dividing mode of energy unit or module is not construed as limiting the invention.
Method of the present invention is not limited to the embodiment described in embodiment, those skilled in the art according to
Technical scheme draws other embodiments, also belongs to the technological innovation scope of the present invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
- A kind of 1. method of monitoring server control video source device time synchronized, it is characterised in that including：Monitoring server detects whether to be connected to the external equipment for providing the standard time；If so, then obtaining the current time of the external equipment and using the current time as present system time, otherwise, root According to the current time for each video source device being connected with itself, present system time is determined；The current time for each video source device being connected with itself is adjusted to the present system time；Wherein, according to the current time for each video source device being connected with itself, present system time is determined, including：The current time for each video source device being connected with itself is sorted according to time order and function；The time difference of the adjacent current time of each two is obtained, obtains time difference sequence；By one of two adjacent current times corresponding to the least absolute value in time difference sequence, as present system time；Or By any one time between two adjacent current times corresponding to least absolute value, as present system time.
- 2. the method as described in claim 1, it is characterised in that the external equipment is NTP ntp server.
- 3. the method as described in claim 1, it is characterised in that if the current time of the external equipment can not be got, and Itself is not connected with any video source device, further comprises：Detect whether to be connected to the external equipment that the standard time is provided again behind the setting time interval of interval.
- 4. the method as described in claim 1, it is characterised in thatIn the time difference sequence only have a least absolute value when, by two corresponding to the least absolute value it is adjacent current when One of between, as present system time.
- 5. the method as described in claim 1, it is characterised in thatWhen there are multiple least absolute values in the time difference sequence, determine continuously occur least absolute value number in time difference sequence Most sequence subsegments；By one of two adjacent current times corresponding to any one least absolute value in the sequence subsegment, during as current system Between.
- 6. method as claimed in claim 5, it is characterised in thatWill be in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value, as current system Time.
- A kind of 7. monitoring server, it is characterised in that including：Detection unit, for detecting whether being connected to the external equipment for providing the standard time；Determining unit, for obtaining the current time of the external equipment and using the current time as present system time； When can not obtain the current time of the external equipment, according to each video source device being connected with monitoring server it is current when Between, determine present system time；Adjustment unit, for the current time for each video source device being connected with monitoring server to be adjusted into the current system Time；Wherein it is determined that unit is specifically used for：The current time for each video source device being connected with itself is sorted according to time order and function；The time difference of the adjacent current time of each two is obtained, obtains time difference sequence；By one of two adjacent current times corresponding to the least absolute value in time difference sequence, as present system time；Or By any one time between two adjacent current times corresponding to least absolute value, as present system time.
- 8. monitoring server as claimed in claim 7, it is characterised in that the external equipment takes for NTP NTP Business device.
- 9. monitoring server as claimed in claim 7, it is characterised in that if can not get the external equipment it is current when Between, and any video source device itself is not connected with, the determining unit is further used for notifying detection unit interval setting time Detect whether to be connected to the external equipment that the standard time is provided again behind interval.
- 10. monitoring server as claimed in claim 7, it is characterised in that the determining unit is specifically used for：In the time difference sequence only have a least absolute value when, by two corresponding to the least absolute value it is adjacent current when One of between, as present system time.
- 11. monitoring server as claimed in claim 7, it is characterised in that the determining unit is specifically used for：When there are multiple least absolute values in the time difference sequence, determine continuously occur least absolute value number in time difference sequence The most sequence subsegment of mesh；By one of two adjacent current times corresponding to any one least absolute value in the sequence subsegment, during as current system Between.
- 12. monitoring server as claimed in claim 11, it is characterised in that the determining unit is specifically used for：Will be in the sequence subsegment positioned at one of two adjacent current times corresponding to middle least absolute value, as current system Time.
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| CN107888870B (en) * | 2016-09-29 | 2020-01-17 | 杭州海康威视数字技术股份有限公司 | Monitoring method, device and system |
| CN107465727B (en) * | 2017-07-21 | 2020-12-22 | 曙光信息产业(北京)有限公司 | Time monitoring system and method |
| CN109391799B (en) * | 2017-08-14 | 2020-09-04 | 杭州海康威视数字技术股份有限公司 | Monitoring video synchronization method and device and video acquisition equipment |
| CN108075852A (en) * | 2017-11-16 | 2018-05-25 | 北京三快在线科技有限公司 | Acquisition methods, device, electronic equipment and the storage medium of network standard time |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807389A (en) * | 2010-03-19 | 2010-08-18 | 上海博康智能网络科技有限公司 | Large screen splicing method and system |
| CN102075314A (en) * | 2009-11-24 | 2011-05-25 | 航天信息股份有限公司 | Time synchronization method of network tax control system |
Family Cites Families (1)
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| US8838776B2 (en) * | 2007-09-26 | 2014-09-16 | Vega Grieshaber Kg | Method for the automatic time synchronisation of devices in network-based systems |
-
2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075314A (en) * | 2009-11-24 | 2011-05-25 | 航天信息股份有限公司 | Time synchronization method of network tax control system |
| CN101807389A (en) * | 2010-03-19 | 2010-08-18 | 上海博康智能网络科技有限公司 | Large screen splicing method and system |
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