CN110113124A - Clock synchronizing method and device for optical fiber vibration sensing system - Google Patents
Clock synchronizing method and device for optical fiber vibration sensing system Download PDFInfo
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- CN110113124A CN110113124A CN201910302599.7A CN201910302599A CN110113124A CN 110113124 A CN110113124 A CN 110113124A CN 201910302599 A CN201910302599 A CN 201910302599A CN 110113124 A CN110113124 A CN 110113124A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0644—External master-clock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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Abstract
The invention discloses a kind of clock synchronizing method and device for optical fiber vibration sensing system, the optical fiber vibration sensing system includes optical fiber demodulating apparatus and video monitoring equipment；The clock synchronizing method includes the following steps: that acquisition reference clock synchronization signal, the reference clock synchronization signal are synchronization signal, the synchronization signal of 1588 synchronous protocol time service of IEEE or the synchronization signal of RTC chip time service of satellite navigation system time service；Timestamp is generated according to the reference clock synchronization signal and default crystal oscillator；The timestamp is respectively written into the first data packet of the optical fiber demodulating apparatus and the second data packet of the video monitoring equipment.Technical solution of the present invention is capable of forming the monolithic long-distance distributed perimeter security system of time reference, convenient for the overall process of subsequent Accurate Analysis early warning situation.
Description
Technical field
The invention belongs to novel field of security technology more particularly to a kind of clock for optical fiber vibration sensing system are synchronous
Method and device.
Background technique
Distributed optical fiber vibration sensing system has become more mature in perimeter security system a wide range of over long distances at present
Technological means, have structure is simple, detection range is long, not by electromagnetic interference, be easy construction etc. advantages, at present in national defence
The applications such as facility, sensitizing range, oil pipeline, electric power.
Video monitoring equipment and optical fiber sensing system is often added in current existing distributed optical fiber vibration sensing system
It links, after optical fiber sensing system provides invasion position, guides nearest video monitoring equipment to carry out matching and obtain correlation
Image information, convenient for comprehensive recovering and analysis intrusion event.But in such distributed optical fiber vibration sensing system at present
Special Clock Synchronization Technology is not used, video monitoring stores video file, optical fiber vibration sensing system using the own system time
The data of the demodulated equipment of system and working time are provided using the system time of industrial personal computer or host computer, the two type equipments
Time accuracy is poor, and the variation of system time will lead to the time entanglement of acquisition equipment, gives subsequent recovering and analysis early warning event
Huge inconvenience is brought, (single distributed optical fiber vibration sensing system can be with especially in long range widespread adoption
Realize 40 kilometers to 60 kilometers of distance sensing), the video monitoring equipment that key position uses is more, if each equipment when
Clock is asynchronous, will be unable to the continuity of the intrusion event of accurate dynamic analysis different location, loses the base of perimeter security system
This function.
Shanghai Communications University " high-precision distribution type fiber-optic synchronous method " with " high-precision distribution type fiber-optic it is synchronous system
The Clock Synchronization Technology of distribution type fiber-optic is given in the patents such as system ", but the above method is suitable for optical communication network, synchronizes and refers to
It enables and agreement is realized by light distribution and exchange network, since optical fiber sensing system is needed using extraneous physical perturbation in optical fiber
The phase change dissection process of portion's optical signal realizes that these information will not exist after optical switching network, so this kind of
Clock synchronizing method is not available in distributed optical fiber vibration sensing system.In video frequency signal processing, also there are field synchronization, row
Series of protocols format and the video source processing method such as synchronize to carry out the synchronization between different video, but the pass of such methods
Note object is not the synchronization of physics absolute time.Therefore, there is presently no be directed in distributed optical fiber vibration sensing system to solve
Adjust the clock synchronizing method and technology of equipment and video linkage monitoring equipment, the technology and methods of existing network synchronization protocols formula
It can not directly be used in the system that existing optical treatment equipment has electricity processing equipment again, and such " soft " synchronous method obtains
The synchronization accuracy arrived is lower, but distributed optical fiber vibration sensing system clock in engineering process is synchronized and must be solved
Problem.
How a kind of demodulated equipment suitable for distributed optical fiber vibration sensing system and video monitoring equipment are provided
Multi-level clock synchronous method, with promote distributed optical fiber vibration sensing system circumference safety-security area application be urgently to solve at present
Certainly the problem of.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome in the prior art in distributed optical fiber vibration sensing system
Demodulated equipment and the video monitoring equipment problem that carry out accurate clock synchronous, provide a kind of for optical fiber vibration sensing system
Clock synchronizing method and device.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of clock synchronizing method for optical fiber vibration sensing system, which is characterized in that the optical fiber vibration sensing system packet
Include optical fiber demodulating apparatus and video monitoring equipment；
The clock synchronizing method includes:
Obtain reference clock synchronization signal, the reference clock synchronization signal be satellite navigation system time service synchronization signal,
The precision interval clock synchronous protocol standard of IEEE 1588(network measure and control system) synchronous protocol time service synchronization signal or
RTC(real-time clock) chip time service synchronization signal；
Timestamp is generated according to the reference clock synchronization signal and default crystal oscillator；
By the timestamp be respectively written into the optical fiber demodulating apparatus the first data packet and the video monitoring equipment
Two data packets.
Preferably, first data packet includes sampled data, and/or, second data packet includes image data.
Preferably, first data packet and the view that the timestamp is respectively written into the optical fiber demodulating apparatus
The step of second data packet of frequency monitoring device, specifically includes:
By the timestamp according to the first data format of first data packet be adjusted at the first time stab, and will be described when
Between stamp according to the second data format of second data packet be adjusted to the second timestamp；
First time stamp is written to the first data packet of the optical fiber demodulating apparatus, and second timestamp is written
Second data packet of the video monitoring equipment.
Preferably, the synchronization of the synchronization signal of the satellite navigation system time service, 1588 synchronous protocol time service of the IEEE
Signal and the synchronization signal of the RTC chip time service respectively correspond different default application scenarios；
The step of acquisition reference clock synchronization signal, specifically includes:
Determine the current application scene of the optical fiber vibration sensing system；
Judge whether the current application scene is the default application scenarios；
If the determination result is YES, then the reference clock synchronization signal is obtained according to the current application scene.
Preferably, the clock synchronizing method for optical fiber vibration sensing system further include:
It detects the optical fiber demodulating apparatus and whether the video monitoring equipment is completed clock and synchronized；
If testing result be it is yes, generate warning banner, the warning banner shows that the clock synchronizes effectively.
Preferably, the clock synchronizing method for optical fiber vibration sensing system further include:
If testing result be it is no, generate warning message, the warning message shows the clock synchronized void.
Preferably, the clock synchronizing method for optical fiber vibration sensing system further include:
The warning banner and/or the warning message are sent to the terminal bound in advance.
The present invention also provides a kind of clock synchronization apparatus for optical fiber vibration sensing system, the optical fiber vibration sensings
System includes optical fiber demodulating apparatus and video monitoring equipment；
The clock synchronization apparatus includes:
Signal acquisition module, for obtaining reference clock synchronization signal, the reference clock synchronization signal is satellite navigation system
Synchronization signal, the synchronization signal of 1588 synchronous protocol time service of IEEE or the synchronization signal of RTC chip time service of time service；
Timestamp generation module, for generating timestamp according to the reference clock synchronization signal and default crystal oscillator；
Timestamp writing module, for the timestamp to be respectively written into the first data packet and the institute of the optical fiber demodulating apparatus
State the second data packet of video monitoring equipment.
Preferably, first data packet includes sampled data, and/or, second data packet includes image data.
Preferably, the timestamp writing module includes Format adjusting submodule and write-in implementation sub-module:
The Format adjusting submodule is for the timestamp to be adjusted to according to the first data format of first data packet
It stabs at the first time, and the timestamp is adjusted to the second timestamp according to the second data format of second data packet；
The Format adjusting submodule is also used to call said write implementation sub-module, and said write implementation sub-module is used for institute
The first data packet that the optical fiber demodulating apparatus is written in stamp at the first time is stated, and the video is written into second timestamp
Second data packet of monitoring device.
Preferably, the synchronization of the synchronization signal of the satellite navigation system time service, 1588 synchronous protocol time service of the IEEE
Signal and the synchronization signal of the RTC chip time service respectively correspond different default application scenarios；
The signal acquisition module includes:
Scene determines submodule, for determining the current application scene of the optical fiber vibration sensing system；
Judging submodule, for judging whether the current application scene is the default application scenarios；
If the determination result is YES, then acquisition implementation sub-module is called, the acquisition implementation sub-module according to described for currently answering
The reference clock synchronization signal is obtained with scene.
Preferably, the clock synchronization apparatus further include:
Detection module, for detecting whether the optical fiber demodulating apparatus and the video monitoring equipment are completed clock and synchronized；
If testing result be it is yes, call warning banner generation module, the warning banner generation module reminds mark for generating
Know, the warning banner shows that the clock synchronizes effectively.
Preferably, the clock synchronization apparatus further includes warning message generation module；
If the testing result of the detection module be it is no, call the warning message generation module, the warning message generates
For module for generating warning message, the warning message shows the clock synchronized void.
Preferably, the clock synchronization apparatus further includes information sending module, the information sending module is used for will be described
Warning banner and/or the warning message are sent to the terminal bound in advance.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Example.
The positive effect of the present invention is that: technical solution of the present invention is ingenious in design, is easily achieved, and efficiently solves mesh
The preceding clock synchronizing method without for demodulated equipment and video monitoring equipment in distributed optical fiber vibration sensing system shows
Real problem is very suitable for using in the distributed optical fiber vibration sensing system of a wide range of long range, is that the circumference of the type is pacified
Anti- system provides the reference method of Clock Synchronization Technology, realizes convenient for different type equipment a variety of inside the type security system
High precision clock is synchronous, analyzes for comprehensive accurate synchronization and reappears attack early warning event and provides the foundation technical support.
Detailed description of the invention
It, below will be to needed in the embodiment attached for the clearer technical solution for illustrating the embodiment of the present invention
Figure is briefly described, it should be apparent that, drawings discussed below is only the attached drawing of section Example of the invention, not to this
The technical solution of invention makes limitation.
Fig. 1 is the flow chart of the clock synchronizing method for optical fiber vibration sensing system of the embodiment of the present invention 1.
Fig. 2 is a kind of flow chart of unrestricted specific embodiment of the embodiment of the present invention 1.
Fig. 3 is the flow chart of the clock synchronizing method for optical fiber vibration sensing system of the embodiment of the present invention 2.
Fig. 4 is the flow chart of the clock synchronizing method for optical fiber vibration sensing system of the embodiment of the present invention 3.
Fig. 5 is the structural block diagram of the clock synchronization apparatus for optical fiber vibration sensing system of the embodiment of the present invention 4.
Fig. 6 is the structural block diagram of the clock synchronization apparatus for optical fiber vibration sensing system of the embodiment of the present invention 5.
Fig. 7 is the structural block diagram of the clock synchronization apparatus for optical fiber vibration sensing system of the embodiment of the present invention 6.
Specific embodiment
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this
The specific embodiment of invention is described in detail.Obviously, described embodiments are only a part of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, belong to protection scope of the present invention.
Embodiment 1
Present embodiments provide a kind of clock synchronizing method for optical fiber vibration sensing system, the optical fiber vibration sensing system
Including optical fiber demodulating apparatus and video monitoring equipment.
As shown in Figure 1, the clock synchronizing method may include steps of:
Step S1: obtaining reference clock synchronization signal, and the reference clock synchronization signal is the synchronization of satellite navigation system time service
The synchronization signal of signal, the synchronization signal of 1588 synchronous protocol time service of IEEE or RTC chip time service；
Step S2: timestamp is generated according to the reference clock synchronization signal and default crystal oscillator；
Step S3: the timestamp is respectively written into the first data packet of the optical fiber demodulating apparatus and the video monitoring is set
The second standby data packet.
Specifically, the receiver chip of satellite navigation system can use UM220 chip, which is received using single-chip
Machine scheme, it is compact-sized, pass through correlator, FFT(fast Fourier transform) and matched filter mixing is applied and algorithm optimization,
In conjunction with the satellite received signal of multichannel suppression technology and high quality, the time service precision of 20 nanosecond of common guarantee；1588 agreement of IEEE
Time service can be using DP83640 chip with FPGA(field programmable gate array) combine by the way of realize, connect by chip
Mouthful programmed configurations, packet check, CRC(cyclic redundancy) modes such as verification, timestamp generate, time adjustment, it can reach 10 microseconds
Time service precision；RTC time service chip uses DS1302 chip, and internal reference frequency is 32768Hz, can reach awarding for millisecond magnitude
Shi Jingdu.
When implementing, satellite navigation system time service can use satellite navigation system and broadcasts above-mentioned steps in the present embodiment
Open service signal determine the wireless radio service of user time, have that time service precision is high, receiving device is simple, application range
Greatly, the advantages that wireless synchronization, the region for being highly suitable for satellite-signal is used, Chinese GPS (global location) satellite navigation system
System and Beidou satellite navigation system can normal use, configure corresponding receiver time synchronizing signal ready to receive, it is main at present
The time service error of the receiver of satellite navigation system chip of stream is 20ns, and multiple spot can reach the same of 100ns magnitude when using simultaneously
Walk precision.1588 standard full name of IEEE is " the precision interval clock synchronous protocol standard of network measure and control system ", main former
Reason is to be corrected synchronization to the clock of nodes all in network by synchronous signal cycle, can make to be based on network
Distributed system reach precise synchronization, can be applied in any multicast network, the present invention according to the analysis and research to the agreement,
By special synchronous chip and FPGA combine in the way of design hardware timestamping generator, complete to be based on 1588 agreement of IEEE
Simultaneous techniques realize, can reach the synchronization accuracy of musec order.RTC time service mostly uses real-time timepiece chip, most of to use
The higher crystal oscillator of precision is as clock source, and under conditions of external battery power supply, when main power source power down, RTC clock is also
It can work, the synchronization accuracy of this method is lower, generally several milliseconds of magnitudes, can be used as emergency clock.It shakes in distribution type fiber-optic
In dynamic sensor-based system, satellite-signal, while fiber-optic vibration data and monitoring device video can receive in the equipment of outdoor application
Data are required to backhaul service device, also constitute Distributed data exchange network, as long as RTC time service chip has continued power can
To work always, therefore meet from these three Clock Synchronization Technologies the application of this system, when being applied in combination to form multistage
Clock synchronous method, it is easy to accomplish.
In the present embodiment, reference clock synchronization signal can be second synchronization signal, it may also be said to, accuracy in one second is by base
Quasi- clock sync signal guarantees, and local crystal oscillator (default crystal oscillator i.e. hereinbefore) is due to the influence of the factors such as frequency drift, one
As it is accurate in the short time, accumulated error can be generated for a long time, therefore accuracy in one second is provided by reference clock synchronization signal, in the second
Time is provided by local crystal oscillator, and the two cooperatively forms the timestamp that Hour Minute Second millisecond microsecond nanosecond information is provided with, due to described
The multiple equipment (such as: optical fiber demodulating apparatus, screen monitoring device etc.) in optical fiber vibration sensing system can be written in timestamp, because
This, the timestamp can also be referred to as bottom timestamp, and bottom refers to the processor module inside various equipment, with host computer phase
It is corresponding.
Further, first data packet may include sampled data, and/or, second data packet may include
Image data.
As one unrestricted embodiment of the present embodiment, as shown in Fig. 2, the step S3 can be by following thin
Implement step by step:
Step S31: the timestamp is adjusted to stab at the first time according to the first data format of first data packet, and
The timestamp is adjusted to the second timestamp according to the second data format of second data packet；
First time stamp: being written the first data packet of the optical fiber demodulating apparatus by step S32, and when by described second
Between stamp the second data packet of the video monitoring equipment is written.
Further, first data format can be identical or not identical with the second data format.
Clock synchronizing method provided in this embodiment for optical fiber vibration sensing system, in fiber optic intrusion detection and video
It joined accurate timestamp information in monitoring, both ensure that the time of circumference security device is accurate and reliable, in turn ensured not
It is synchronous with the high precision clock between equipment, it provides the foundation support for the continuous synchronization analysis of positions multiple over long distances, it can be with
The function of preferably playing perimeter security system is very suitable to carry out the invasion information of a wide range of perimeter security system comprehensively whole
Body analysis.
Embodiment 2
A kind of clock synchronizing method for optical fiber vibration sensing system is present embodiments provided, as shown in figure 3, in the present embodiment
Clock synchronizing method be further improvement on that basis of example 1.
Further, the synchronization signal of the satellite navigation system time service, 1588 synchronous protocol time service of the IEEE it is same
Step signal and the synchronization signal of the RTC chip time service can respectively correspond different default application scenarios；
The step S1 may include following subdivided step:
Step S11: the current application scene of the optical fiber vibration sensing system is determined；
Step S12: judge whether the current application scene is the default application scenarios；
If the determination result is YES, it thens follow the steps S13: the synchronous letter of the reference clock is obtained according to the current application scene
Number.
If judging result be it is no, then follow the steps S14: redefining the current application field of the optical fiber vibration sensing system
Scape.
In practical applications, the demodulated equipment and video monitoring equipment of distributed optical fiber vibration sensing system are laid in field
When, there are satellite navigation system signals, therefore generally using satellite navigation system time service as Pnmary Synchronization method, that is,
It says, under the application scenarios of field work, highest priority of the satellite navigation system time service in three kinds of time service modes.Work as hardware
When equipment is located at indoor or underground (application such as underground pipe gallery or tunnel), the data switching networks of all devices is interconnected
, therefore the hardware condition of 1588 agreement of IEEE operation is fully met, and IEEE is used under the applicable cases of the type
1588 agreement time services, that is to say, that indoors or under the application scenarios of underground job, 1588 agreement time service of IEEE is at three kinds
Highest priority in time service mode.In the security protection application of long term monitoring, it sometimes appear that network during steady operation
The case where failure, switches to RTC chip time service mode at this time, guarantees that each equipment has under any circumstance and more accurately awards
When clock source, that is to say, that under the application scenarios for needing long term monitoring, RTC chip time service is excellent in three kinds of time service modes
First grade highest.
High precision clock by the united application of above-mentioned three kinds of methods, under any scene may be implemented substantially any time
It is synchronous.The current highest signal frequency, demodulation frequency of demodulated equipment in distributed optical fiber vibration sensing system is up to 30kHz, commonly
The frame speed of video monitoring equipment is that 60 frames are per second or 120 frames are per second, therefore it is required that clock synchronization accuracy reaches 10 musec orders is
It is optimal, the image need corresponding with vibration processes of common video monitoring equipment can also be met when guaranteeing the synchronization accuracy of millisecond magnitude
It asks.It is worth noting that, with the development of technology, in order to preferably identify the process of security protection invasion, signal frequency, demodulation frequency and view
Frequency monitoring device frame speed can be higher and higher, and the present invention is that following upgrade application also provides the good high precision clock side of synchronization
Case.
Clock synchronizing method provided in this embodiment for optical fiber vibration sensing system can be according to different applied fields
Scape switches different clock sources, can effectively improve the synchronous precision of clock.
Embodiment 3
A kind of clock synchronizing method for optical fiber vibration sensing system is present embodiments provided, as shown in figure 4, in the present embodiment
Clock synchronizing method be further improvement on the basis of embodiment 1 or 2.
Further, the clock synchronizing method for optical fiber vibration sensing system can also include the following steps:
Step S4: detecting the optical fiber demodulating apparatus and whether the video monitoring equipment is completed clock and synchronized；
If testing result be it is yes, then follow the steps S5: generating warning banner, the warning banner shows that the clock has synchronized
Effect.
If testing result be it is no, then follow the steps S6: generating warning message, the warning message shows that the clock is synchronous
In vain.
Further, the clock synchronizing method for optical fiber vibration sensing system can also include the following steps:
Step S7: the warning banner and/or the warning message are sent to the terminal bound in advance.
The distributed optical fiber vibration sensing system voluntarily developed is combined to carry out using clock synchronizing method provided by the invention
Longtime running test, since the demodulated equipment (being referred to as (FBG) demodulator) of distributed optical fiber vibration system is self-research equipment,
Therefore, timestamp can be very easily added in actual data packet after generating, for the demodulated equipment of other unit development
For, it is synchronous that high precision clock provided by the present invention can be realized in the simple programming modification of progress.Video monitoring equipment can be with
The DS-2DC7220IW intelligent ball-type camera for selecting Haikang prestige view, supports the write-in of time service timestamp of the invention.Through too long
Phase test, clock source switching etc. of the present invention in distributed optical fiber vibration sensing system under clock synchronization accuracy and abnormal conditions
Index is all satisfied actual demand.
In addition, the entire method flow in the present embodiment can be in the output signal and locally height of multiple clock synchronization hardware
The locking phase output synchronised clock control of steady temperature compensating crystal oscillator is lower to be completed, and the clock synchronizing method is in multiple types, the information collection of more equipment
At in system have applicability.
Clock synchronizing method provided in this embodiment for optical fiber vibration sensing system can visually show whether
Effectively synchronous information, in the case of cannot realize that clock is synchronous in time, can also with and alarm, prompt staff to check
Equipment, thus, it is possible to further increase the accuracy of entire Clock Synchronization Procedure.
Embodiment 4
Present embodiments provide a kind of clock synchronization apparatus for optical fiber vibration sensing system, the optical fiber vibration sensing system
Including optical fiber demodulating apparatus and video monitoring equipment；
Referring to FIG. 5, the clock synchronization apparatus may include:
Signal acquisition module 10, for obtaining reference clock synchronization signal, the reference clock synchronization signal is satellite navigation system
Synchronization signal, the synchronization signal of 1588 synchronous protocol time service of IEEE or the synchronization signal of RTC chip time service of system time service；
Timestamp generation module 11, for generating timestamp according to the reference clock synchronization signal and default crystal oscillator；
Timestamp writing module 12, for the timestamp is respectively written into the optical fiber demodulating apparatus the first data packet and
Second data packet of the video monitoring equipment.
Specifically, first data packet includes sampled data, and/or, second data packet includes image data.
Further, the timestamp writing module 12 includes Format adjusting submodule 121 and write-in implementation sub-module
122:
The Format adjusting submodule 121 is used to the timestamp being adjusted to the according to the data format of first data packet
One timestamp, and the timestamp is adjusted to the second timestamp according to the data format of second data packet；
The Format adjusting submodule 121 is also used to call said write implementation sub-module 122, said write implementation sub-module
122 for first time stamp to be written to the first data packet of the optical fiber demodulating apparatus, and by second timestamp
The second data packet of the video monitoring equipment is written.
Working principle, more contents of working method about the clock synchronization apparatus in embodiment 4, are referred to
The associated description about clock synchronizing method in embodiment 1, which is not described herein again.
Clock synchronization apparatus provided in this embodiment for optical fiber vibration sensing system at runtime, may be implemented in light
Accurate timestamp information is added in fine intrusion detection and video monitoring, both ensure that the time of circumference security device accurately may be used
It leans on, in turn ensures that the high precision clock between distinct device is synchronous, provided for the continuous synchronization analysis of positions multiple over long distances
Infrastructural support can preferably play the function of perimeter security system, be very suitable to the invasion to a wide range of perimeter security system
Information carries out comprehensive global analysis.
Embodiment 5
A kind of clock synchronization apparatus for optical fiber vibration sensing system is present embodiments provided, as shown in fig. 6, in the present embodiment
Clock synchronization apparatus be further improvement on the basis of embodiment 4.
Specifically, shown in the synchronous association of the synchronization signal of the satellite navigation system time service, the IEEE 1588, time service is discussed
Synchronization signal and the synchronization signal of the RTC chip time service can respectively correspond different default application scenarios；
The signal acquisition module 10 may include:
Scene determines submodule 101, for determining the current application scene of the optical fiber vibration sensing system；
Judging submodule 102, for judging whether the current application scene is the default application scenarios；
If the determination result is YES, then it calls and obtains implementation sub-module 103, the acquisition implementation sub-module 103 is used for according to
Current application scene obtains the reference clock synchronization signal.
In the present embodiment, the clock synchronization apparatus can also be including clock source switching management module and to time service equipment
It identifies management module (not shown).When the current application scene of the optical fiber vibration sensing system is second by the first scene switching
After scene, switching clock source is needed to provide the reference clock synchronization signal for being more in line with concrete application scene, the clock source
Switching management module can manage the switching of clock source as a whole.It is described to be protected to time service equipment identification management module
It demonstrate,proves clock synchronization apparatus in the hardware such as optical fiber mediation devices and video monitoring equipment and the present embodiment and keeps smoothly information friendship
Mutually.
Working principle, more contents of working method about the clock synchronization apparatus in embodiment 5, are referred to
The associated description about clock synchronizing method in embodiment 2, which is not described herein again.
Clock synchronization apparatus provided in this embodiment for optical fiber vibration sensing system at runtime, can be according to difference
Application scenarios switch different clock sources, it is possible thereby to effectively improve the synchronous precision of clock.
Embodiment 6
A kind of clock synchronization apparatus for optical fiber vibration sensing system is present embodiments provided, as shown in fig. 7, in the present embodiment
Clock synchronization apparatus be further improvement on the basis of embodiment 4 or 5.
Further, the clock synchronization apparatus 1 can also include:
Detection module 13, for detecting whether the optical fiber demodulating apparatus and the video monitoring equipment are completed clock and synchronized；
If testing result be it is yes, call warning banner generation module 14, the warning banner generation module 14 is mentioned for generating
It wakes up and identifies, the warning banner shows that the clock synchronizes effectively.
Further, the clock synchronization apparatus 1 can also include warning message generation module.
If the testing result of the detection module be it is no, call the warning message generation module 15, the alarm signal
For breath generation module 15 for generating warning message, the warning message shows the clock synchronized void.
Further, the clock synchronization apparatus can also include information sending module 16, the information sending module 16
For the warning banner and/or the warning message to be sent to the terminal bound in advance.
Specifically, the information sending module 16 can be by wired or wired communication mode by the warning banner
And/or the warning message is sent to the terminal bound in advance in the form of voice or text.
Further, the warning banner and/or the warning message can for multilingual type (such as: Chinese, English
Language etc.), to meet the application of the method in a variety of different occasions of the present embodiment, to expand the region used and range.
In the present embodiment, the terminal can be disposable type PC(PC) end or mobile terminal (such as: hand
Machine, ipad(tablet computer)) etc., the embodiment of the present invention is without limitation
Working principle, more contents of working method about the clock synchronization apparatus in embodiment 6, are referred to implement
The associated description about clock synchronizing method in example 3, which is not described herein again.
Clock synchronization apparatus provided in this embodiment for optical fiber vibration sensing system at runtime, can be visual
Show whether effectively synchronous information, in the case of cannot realize that clock is synchronous in time, can also with and alarm, prompt work
Personnel inspection equipment, thus, it is possible to further increase the accuracy of entire Clock Synchronization Procedure.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of clock synchronizing method for optical fiber vibration sensing system, which is characterized in that the optical fiber vibration sensing system
Including optical fiber demodulating apparatus and video monitoring equipment；
The clock synchronizing method includes:
Obtain reference clock synchronization signal, the reference clock synchronization signal be satellite navigation system time service synchronization signal,
The synchronization signal of 1588 synchronous protocol time service of IEEE or the synchronization signal of RTC chip time service；
Timestamp is generated according to the reference clock synchronization signal and default crystal oscillator；
By the timestamp be respectively written into the optical fiber demodulating apparatus the first data packet and the video monitoring equipment
Two data packets.
2. being used for the clock synchronizing method of optical fiber vibration sensing system as described in claim 1, which is characterized in that described first
Data packet includes sampled data, and/or, second data packet includes image data.
3. being used for the clock synchronizing method of optical fiber vibration sensing system as described in claim 1, which is characterized in that described by institute
It states timestamp and is respectively written into the first data packet of the optical fiber demodulating apparatus and the second data packet of the video monitoring equipment
The step of specifically include:
The timestamp is adjusted to stab at the first time according to the data format of first data packet, and by the timestamp
The second timestamp is adjusted to according to the data format of second data packet；
First time stamp is written to the first data packet of the optical fiber demodulating apparatus, and second timestamp is written
Second data packet of the video monitoring equipment.
4. being used for the clock synchronizing method of optical fiber vibration sensing system as described in claim 1, it is characterised in that: the satellite
The synchronization signal of navigation system time service, the synchronization signal and the RTC chip time service of 1588 synchronous protocol time service of the IEEE
Synchronization signal respectively correspond different default application scenarios；
The step of acquisition reference clock synchronization signal, specifically includes:
Determine the current application scene of the optical fiber vibration sensing system；
Judge whether the current application scene is the default application scenarios；
If the determination result is YES, then the reference clock synchronization signal is obtained according to the current application scene.
5. the clock synchronizing method according to any one of claims 1-4 for optical fiber vibration sensing system, it is characterised in that:
The clock synchronizing method for optical fiber vibration sensing system further include:
It detects the optical fiber demodulating apparatus and whether the video monitoring equipment is completed clock and synchronized；
If testing result be it is yes, generate warning banner, the warning banner shows that the clock synchronizes effectively.
6. being used for the clock synchronizing method of optical fiber vibration sensing system as claimed in claim 5, it is characterised in that:
The clock synchronizing method for optical fiber vibration sensing system further include:
If testing result be it is no, generate warning message, the warning message shows the clock synchronized void.
7. being used for the clock synchronizing method of optical fiber vibration sensing system as claimed in claim 6, it is characterised in that: described to be used for
The clock synchronizing method of optical fiber vibration sensing system further includes being sent to the warning banner and/or the warning message in advance
The terminal of binding.
8. a kind of clock synchronization apparatus for optical fiber vibration sensing system, which is characterized in that the optical fiber vibration sensing system
Including optical fiber demodulating apparatus and video monitoring equipment；
The clock synchronization apparatus includes:
Signal acquisition module, for obtaining reference clock synchronization signal, the reference clock synchronization signal is satellite navigation system
Synchronization signal, the synchronization signal of 1588 synchronous protocol time service of IEEE or the synchronization signal of RTC chip time service of time service；
Timestamp generation module, for generating timestamp according to the reference clock synchronization signal and default crystal oscillator；
Timestamp writing module, for the timestamp to be respectively written into the first data packet and the institute of the optical fiber demodulating apparatus
State the second data packet of video monitoring equipment.
9. being used for the clock synchronization apparatus of optical fiber vibration sensing system as claimed in claim 8, which is characterized in that described first
Data packet includes sampled data, and/or, second data packet includes image data.
10. being used for the clock synchronization apparatus of optical fiber vibration sensing system as claimed in claim 8, which is characterized in that when described
Between stamp writing module include Format adjusting submodule and write-in implementation sub-module:
The Format adjusting submodule is used to the timestamp being adjusted to first according to the data format of first data packet
Timestamp, and the timestamp is adjusted to the second timestamp according to the data format of second data packet；
The Format adjusting submodule is also used to call said write implementation sub-module, and said write implementation sub-module is used for institute
The first data packet that the optical fiber demodulating apparatus is written in stamp at the first time is stated, and the video is written into second timestamp
Second data packet of monitoring device.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830141A (en) * | 2019-11-26 | 2020-02-21 | 北京小马智行科技有限公司 | Time synchronization method, system, storage medium and processor |
| CN112769518A (en) * | 2021-01-22 | 2021-05-07 | 上海宽域工业网络设备有限公司 | Serial port time sending system and method with second punctual edge |
| CN114812673A (en) * | 2022-04-02 | 2022-07-29 | 北京卫星环境工程研究所 | Multi-parameter multi-module optical fiber data synchronous testing method |
| CN116545570A (en) * | 2023-05-31 | 2023-08-04 | 烟台东方瑞创达电子科技有限公司 | Data monitoring method and system of optical fiber time service system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075317A (en) * | 2011-01-24 | 2011-05-25 | 博威通讯系统(深圳)有限公司 | Reliable time frequency synchronization method and system in home base station system |
| CN102298099A (en) * | 2011-07-13 | 2011-12-28 | 西安市双合软件技术有限公司 | Power distribution and consumption monitoring and measuring apparatus possessing time calibration function |
| US20130227172A1 (en) * | 2012-02-27 | 2013-08-29 | Qun Zheng | Frequency distribution using precision time protocol |
| CN108768576A (en) * | 2018-06-29 | 2018-11-06 | 广东星舆科技有限公司 | A kind of method and device obtaining sensor precise synchronization data |
| WO2018221238A1 (en) * | 2017-06-02 | 2018-12-06 | ソニー株式会社 | Wireless device and processing method for wireless device |
-
2019
- 2019-04-16 CN CN201910302599.7A patent/CN110113124A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075317A (en) * | 2011-01-24 | 2011-05-25 | 博威通讯系统(深圳)有限公司 | Reliable time frequency synchronization method and system in home base station system |
| CN102298099A (en) * | 2011-07-13 | 2011-12-28 | 西安市双合软件技术有限公司 | Power distribution and consumption monitoring and measuring apparatus possessing time calibration function |
| US20130227172A1 (en) * | 2012-02-27 | 2013-08-29 | Qun Zheng | Frequency distribution using precision time protocol |
| WO2018221238A1 (en) * | 2017-06-02 | 2018-12-06 | ソニー株式会社 | Wireless device and processing method for wireless device |
| CN108768576A (en) * | 2018-06-29 | 2018-11-06 | 广东星舆科技有限公司 | A kind of method and device obtaining sensor precise synchronization data |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830141A (en) * | 2019-11-26 | 2020-02-21 | 北京小马智行科技有限公司 | Time synchronization method, system, storage medium and processor |
| CN110830141B (en) * | 2019-11-26 | 2021-11-16 | 北京小马慧行科技有限公司 | Time synchronization method, system, storage medium and processor |
| CN112769518A (en) * | 2021-01-22 | 2021-05-07 | 上海宽域工业网络设备有限公司 | Serial port time sending system and method with second punctual edge |
| CN112769518B (en) * | 2021-01-22 | 2022-09-13 | 上海宽域工业网络设备有限公司 | Serial port time sending system and method with second punctual edge |
| CN114812673A (en) * | 2022-04-02 | 2022-07-29 | 北京卫星环境工程研究所 | Multi-parameter multi-module optical fiber data synchronous testing method |
| CN114812673B (en) * | 2022-04-02 | 2023-11-10 | 北京卫星环境工程研究所 | Multi-parameter multi-module optical fiber data synchronous test method |
| CN116545570A (en) * | 2023-05-31 | 2023-08-04 | 烟台东方瑞创达电子科技有限公司 | Data monitoring method and system of optical fiber time service system |
| CN116545570B (en) * | 2023-05-31 | 2024-03-29 | 烟台东方瑞创达电子科技有限公司 | Data monitoring method and system of optical fiber time service system |
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