CN107911207A - A kind of periodic signal synchronous method based on time adjustment - Google Patents
A kind of periodic signal synchronous method based on time adjustment Download PDFInfo
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- CN107911207A CN107911207A CN201711099733.5A CN201711099733A CN107911207A CN 107911207 A CN107911207 A CN 107911207A CN 201711099733 A CN201711099733 A CN 201711099733A CN 107911207 A CN107911207 A CN 107911207A
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- 230000000737 periodic effect Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000012937 correction Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 102100028082 Tapasin Human genes 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 108010059434 tapasin Proteins 0.000 description 2
- YWHLKYXPLRWGSE-UHFFFAOYSA-N Dimethyl trisulfide Chemical compound CSSSC YWHLKYXPLRWGSE-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
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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
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
A kind of periodic signal synchronous method based on time adjustment, is a kind of remote synchronization method of periodic signal, belongs to technical field of electronic communication, can be applied to data acquisition and control field.It is characterized in that：Periodic signal inputs local device, when input signal reaches the phase value of setting, the value correction apparatus time in cycle of local device periodic signal, the equipment time is reflected the change of cycle and phase；Local device corrects the equipment time of remote equipment by the Time Synchronization Mechanism of communications network system；Remote equipment exports periodic signal on the basis of the equipment time.This method can realize low equipment complexity, low time delay, the periodic signal of High Precision Long-distance synchronization.
Description
Technical field
The invention belongs to technical field of electronic communication, can be applied to data acquisition and control field.
Background technology
In data acquisition and control field, particularly high-precision real when multipoint acquisition with control system, it is necessary to there is a phase
Bit synchronization benchmark.This Phase synchronization benchmark can be the phase generation from measured signal or sampling system active
Send.When closely, generally made using bus control signal synchronous；But work as distant, the propagation of synchronous control signal
When time delay cannot be ignored, the realization of Phase synchronization benchmark is just more difficult.
In order to realize long-range Phase synchronization, it has been disclosed that method, such as patent 2015210897367：It is using wireless transmission
It is this by output scale time, the signal same period with the mode of reception, the waveform scale time of transmitter sending cycle signal, receiver
Method existing time delay not elimination between sending and receiving, adds time delay again when sending and receiving processing on the contrary.Again
Such as patent 2015109235581：And using transmitting wirelessly and receiving mode, in order to eliminate time delay, to carry out multiple round-trip
Mixing, adds equipment complexity.
In order to realize low equipment complexity, low time delay, high-precision remote synchronization phase signal, the present invention proposes a kind of
Synchronous method based on time adjustment.
The content of the invention
A kind of periodic signal synchronous method based on time adjustment of the present invention, is a kind of the long-range same of periodic signal
One step process.
Periodic signal of the present invention synchronously refers to：When the frequency and phase of the periodic signal of input local device have change
During change, the frequency and phase of remote equipment output signal are also synchronously followed and changed, and make both frequencies identical, phase difference
It is maintained in the error of a setting.
The equipment of synchronous method of the present invention, including local device and remote equipment, local device and remote equipment structure
Into communications network system.
The present invention theoretical foundation be the periodic quantity and phase value of periodic signal, be substantially one kind in units of the time
Periodic signal two important parameters, can be expressed with the time.Therefore, the invention uses the time as carrier,
Modulation and demodulation periodic quantity and phase value, realize remote synchronization.
The present invention realizes that synchronous method is performed by following three combination of steps：
Step 1：Periodic signal inputs local device, and when input signal reaches the phase value of setting, local device is believed with the cycle
Number the value correction apparatus time in cycle, the equipment time is reflected the change of cycle and phase；
Step 2：Local device corrects the equipment time of remote equipment by the Time Synchronization Mechanism of communications network system, local
Equipment detects the periodic quantity change of periodic signal when being more than setting value, can initiate time adjustment, remote equipment detect and
When the equipment time of local device has offset and is more than setting value, time adjustment can also be initiated, makes the equipment of remote equipment
Time is synchronous with the equipment time holding of local device；
Step 3：Local device and remote equipment all export periodic signal on the basis of the equipment time；
The running of three above step is each independent, and in no particular order, input and output of the equipment time as each step, make three
A step forms entirety.
The equipment time of the present invention, refers to the time value that the time counter of equipment produces.It can be equipment control
The time that the system time or the dedicated timer of device controller of the operating system of device operation processed produce.
Local device of the present invention is with the method for the value correction apparatus time in cycle of periodic signal：By periodic quantity
Variable quantity, deviation is calculated with the variable quantity of equipment time, and uses the deviation value correction apparatus time, makes reflection cycle equipment time
With the change of phase.
The method of the equipment time of local device of the present invention correction remote equipment is：Local device and remote equipment
Communication system is formed, by the Time Synchronization Mechanism of communications network system, corrects the equipment time of remote equipment.
The Time Synchronization Mechanism of communication network, existing a variety of disclosed methods can be selected, and include but not limited to public technology
TOA methods, TDOA methods, Network Time Protocol, 1588 agreements, RBS synchronization mechanisms, TPSN synchronous protocols, mini-sync algorithms,
Tiny-sync algorithms, DMTS synchronization mechanisms, LTS mechanism, FTSP synchronous protocols.
The method that remote equipment of the present invention exports periodic signal on the basis of the equipment time is：Using the equipment time as
Reference synchronization timer, then the cycle triggering output periodic signal with timer.
The production method of output periodic signal is produced with the cycle triggering of timer, also existing a variety of disclosed methods are optional
With including but not limited to disclosed pulse duration modulation method（PWM method）, Direct frequency synthesizer method（DDS methods）, phaselocked loop method
（PLL methods）, digital-analog convertion method（DAC methods）.
With the method for the present invention, periodic signal successively inputs local device, and the signal of remote equipment output is tool
Have the periodic signal with input periodic signal identical frequency and same phase, so as to fulfill long-range output periodic signal with it is locally defeated
The frequency plot for entering periodic signal is synchronous.
Brief description of the drawings
Fig. 1：The composition of system.
Fig. 2：The composition of equipment.
Fig. 3：The flow of periodic signal calibration equipment time.
Fig. 4：Communication system time synchronization mechanism.
Fig. 5：The equipment time produces the flow of periodic signal.
Embodiment
The present embodiment describes the implementation of invention with communication.
Equipment described in the present embodiment, as shown in Figure 1, including a local device（101）Remotely set with least one
Standby, local device, refers to the equipment that periodic signal inputs；Remote equipment refers to the equipment for exporting periodic signal.The present embodiment is only
Illustrate two remote equipments：Remote equipment 1（102）, remote equipment 2（103）.
As shown in Figure 2, each equipment is by power supply（201）, shaping filter（202）, controller（203）, time counting
Device（204）, signal generator（205）, transceiver（206）Composition；Input periodic signal（207）For input signal, output week
Phase signal（208）To export signal.
Input periodic signal（207）Input local device（101）, shaped wave filter（202）After processing, controller is sent into
（203）, in controller（203）Interior correction time counter（204）The local device time, equipment time control signal generator
（205）Produce output periodic signal（208）.
Input periodic signal correction the local device time flow as shown in figure 3, controller signal reach zero phase when,
Triggering, which is caught, to be interrupted, and obtains simultaneously calculating cycle seizure value, calculates time deviation with value normal period, and correct this with time deviation
Ground time counter, makes the local device time reflect the change of signal period.With the continuous input of periodic signal, this school
Positive process is operation in cycles.
Local device corrects the equipment time of remote equipment, it is necessary to could be completed into row data communication by transceiver.
Therefore, local device forms communications network system with remote equipment, is completed with the Time Synchronization Mechanism of communications network system
Time synchronization.
The Time Synchronization Mechanism of communications network system, can use a variety of published methods, and the present embodiment selects TPSN
Agreement illustrates that local node and remote node realize time synchronization by exchanging two message, as shown in Figure 4, remotely set
The sending time stamp T1 and receiving time stamp T4, local device of note the machine record the machine receiving time stamp T2 and sending time
Stab T3.And by two message exchange timestamps, in this way, local device and remote equipment can obtain four timestamps；T1、
T2、T3、T4.By formula OFFSET=（((T2-T1)-(T4-T3))/2）Calculate time migration, remote equipment time migration
OFFSET calibration equipment times, the time and local device for making remote equipment realize time synchronization.
The implementation procedure of the equipment time of local device correction remote equipment, is the week that local device detects periodic signal
When time value change is more than setting value, time adjustment can be initiated；Remote equipment is detected to be existed with the equipment time of local device
Offset and when being more than setting value, can also initiate time adjustment, make remote equipment the equipment time and local device equipment when
Between keep synchronous.
The local device and remote equipment of the present embodiment can be with periodic signal be exported on the basis of the equipment time, it is performed
As shown in Figure 5, controller is output with the spilling event of time counter, is closed with principal and subordinate process on the basis of the equipment time
It is the timer in sync generator, the method for synchronization is clock triggering, makes timer and the equipment time of signal generator
It is synchronous.The method for producing output periodic signal with the cycle triggering of timer, the present embodiment selection pulse duration modulation method, is specifically
Initial phase is produced as zero width-modulation pulse using the cycle triggering of timer, output cycle letter is produced by width-modulation pulse
Number.
The device of the present embodiment is general electrical components, can realize low equipment complexity, low time delay, nanosecond class precision it is remote
The periodic signal of journey synchronization.
Claims (4)
1. it is a kind of remote synchronization method of periodic signal a kind of periodic signal synchronous method based on time adjustment, its feature
It is to be performed by following three combination of steps：
Step 1：Periodic signal inputs local device, and when input signal reaches the phase value of setting, local device is believed with the cycle
Number the value correction apparatus time in cycle, the equipment time is reflected the change of cycle and phase；
Step 2：Local device corrects the equipment time of remote equipment by the Time Synchronization Mechanism of communications network system, local
Equipment detects the periodic quantity change of periodic signal when being more than setting value, can initiate time adjustment, remote equipment detect and
When the equipment time of local device has offset and is more than setting value, time adjustment can also be initiated, makes the equipment of remote equipment
Time is synchronous with the equipment time holding of local device；
Step 3：Local device and remote equipment all export periodic signal on the basis of the equipment time；
The running of three above step is each independent, and in no particular order, input and output of the equipment time as each step, make three
A step forms entirety.
2. the synchronous method described in right 1, local device are with the method for the value correction apparatus time in cycle of periodic signal：By week
The variable quantity of time value, deviation is calculated with the variable quantity of equipment time, and with the deviation value correction apparatus time, makes the equipment time anti-
Reflect the change in cycle.
3. the synchronous method described in right 1, local device exports the side of periodic signal with remote equipment on the basis of the equipment time
Method is：On the basis of the equipment time, with master slave relation synchro timer, with the cycle triggering output periodic signal of timer.
4. the synchronous method described in right 1, the method for the equipment time of local device correction remote equipment are：Local device with it is remote
Journey equipment forms communication system, by the Time Synchronization Mechanism of communications network system, corrects the equipment time of remote equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711099733.5A CN107911207A (en) | 2017-11-09 | 2017-11-09 | A kind of periodic signal synchronous method based on time adjustment |
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| CN201711099733.5A CN107911207A (en) | 2017-11-09 | 2017-11-09 | A kind of periodic signal synchronous method based on time adjustment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113163485A (en) * | 2021-03-23 | 2021-07-23 | 电子科技大学 | Method for accurately positioning in large-range complex indoor environment |
| US12127147B2 (en) * | 2021-11-19 | 2024-10-22 | Ufi Space Co., Ltd. | Synchronization correction method, master device and slave device |
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| CN102546071A (en) * | 2011-12-23 | 2012-07-04 | 北京北方烽火科技有限公司 | Clock synchronization method and system |
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| CN103605062A (en) * | 2013-12-06 | 2014-02-26 | 青岛华电高压电气有限公司 | Partial discharge signal trigger phase synchronous clock source |
| CN104053223A (en) * | 2013-03-13 | 2014-09-17 | 中国科学院大学 | A Time Synchronization Method for Low-power Wireless Sensor Networks |
| CN104303448A (en) * | 2012-05-16 | 2015-01-21 | 三星电子株式会社 | Method and apparatus for performing synchronization in a device-to-device network |
| CN104808106A (en) * | 2015-04-02 | 2015-07-29 | 广州供电局有限公司 | Electrical equipment local discharge positioning method and system |
| CN106131947A (en) * | 2016-09-14 | 2016-11-16 | 潘进 | A kind of method that between Wireless Communication Equipment, clock synchronizes |
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2017
- 2017-11-09 CN CN201711099733.5A patent/CN107911207A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102047561A (en) * | 2008-05-27 | 2011-05-04 | 索尼爱立信移动通讯有限公司 | Methods of calibrating a clock using multiple clock periods with a single counter and related devices and methods |
| CN102859334A (en) * | 2010-03-24 | 2013-01-02 | 魁北克水电公司 | Method And System For The Time Synchronization Of The Phase Of Signals From Respective Measurement Devices |
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| CN103605062A (en) * | 2013-12-06 | 2014-02-26 | 青岛华电高压电气有限公司 | Partial discharge signal trigger phase synchronous clock source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113163485A (en) * | 2021-03-23 | 2021-07-23 | 电子科技大学 | Method for accurately positioning in large-range complex indoor environment |
| US12127147B2 (en) * | 2021-11-19 | 2024-10-22 | Ufi Space Co., Ltd. | Synchronization correction method, master device and slave device |
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