CN110391894A - Receiving end, synchronization system and the particle accelerator of synchronization system - Google Patents
Receiving end, synchronization system and the particle accelerator of synchronization system Download PDFInfo
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- CN110391894A CN110391894A CN201910817436.2A CN201910817436A CN110391894A CN 110391894 A CN110391894 A CN 110391894A CN 201910817436 A CN201910817436 A CN 201910817436A CN 110391894 A CN110391894 A CN 110391894A
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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
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
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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
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
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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
- H04L7/048—Speed or phase control by synchronisation signals using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal
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Abstract
The invention discloses a kind of receiving end of synchronization system, synchronization system and particle accelerators.The receiving end of the synchronization system includes: synchronous terminal, is arranged between the transmitting terminal for sending reference signal and Phase Processing device, including transmitting terminal phase transformation obtains device and receiving end phase transformation obtains device；Phase Processing device is arranged between synchronous terminal and load, wherein transmitting terminal phase transformation obtains device acquisition reference signal and is transmitted to the phase change of synchronous terminal from transmitting terminal and sends Phase Processing device to；Receiving end phase transformation obtains device and chronologically switches reference signal and carry out the conducting of self-supported feedback signal to Phase Processing device, so that Phase Processing device obtains the phase change of phase difference and reference signal at device based on reference signal and feedback signal in receiving end phase transformation, the phase of the driving signal of load to be sent to is obtained.The present invention can be improved the locking phase precision of transmitting terminal and receiving end as a result, improve the precision of synchronization system.
Description
Technical field
The present invention relates to the receiving end of simultaneous techniques more particularly to synchronization system, synchronization system and particle accelerators.
Background technique
Current large-scale particle accelerator in subpicosecond magnitude, that is, requires in physical space the index request of synchronization system
To start a certain operation simultaneously within the time difference that absolute time is subpicosecond at a distance of even several kilometers of several hundred rice of two points, and
It is well known that the time of one meter of light traveling was about 3.3 nanoseconds, i.e., about 3333 picoseconds.
In general, realizing that the synchronous method of subpicosecond will be divided as reference signal microwave radio signal in transmitting terminal
For two-way or multichannel, to be respectively transmitted to two or more receiving ends.Phase Lock Technique is recycled, so that each receiving end recovers
Microwave signal and the reference signal locking phase (keep one fixed phase difference) that sends of transmitting terminal.For example, if it is with 3GHz's
Microwave signal is reference signal, is transferred to each receiving end from transmitting terminal by the reference signal.At this point, the week of the reference signal of 3GHz
Phase is 333 picoseconds, if the precision of locking phase is 1 degree, the synchronization accuracy of single receiving end is 0.925 picosecond of 333/360 ≈.
Existing Phase Lock Technique is generally divided into two parts, and (each signal waveform example in figure is according to the time as shown in Figure 1
It is provided to simulate).First part is synchronous terminal, is responsible for detection reference signal on the transmission road from transmitting terminal to synchronous terminal
The variation occurred at any time on diameter.Second part is the Phase Processing dress being made of such as phase discriminator, computing unit and synthesizer
It sets.Wherein, the reference signal that the computing unit in second part is measured according to first part in above-mentioned transmission path at any time
Between the amount that changes carry out phase compensation, be enable to the phase of the driving signal exported by setting synthesizer, adjust
It is input to the phase of the feedback signal of synchronous terminal, so that it is fixed relative to the difference of the phase of the reference signal of transmitting terminal.
Specifically, the prior art shown in FIG. 1 may be summarized to be following content.
1. reference signal is transmitted to the synchronous terminal of receiving end by transmitting terminal, transmission medium can be such as optical fiber or coaxial
Cable etc..
2. following operate can be completed in synchronous terminal.
A) reference signal is received.It may include the process of light power transformation and obtain and (sent from transmitting terminal by transmitting terminal path
Transmission path of the reference signal to synchronous terminal) caused by reference signal phase change.Here, it obtains and joins on transmitting terminal path
The operation for examining the phase change of signal can be obtained device (alternatively referred to as " synchronous path measure of the change dress by transmitting terminal phase transformation
Set ") it executes, the phase change of the reference signal of acquisition can be transmitted to the computing unit in Phase Processing device.
B) from load-receipt feedback signal.The path for receiving load usually can be to be directly accessed with coaxial line.
C) make to correct source signal incorporation from the received reference signal of transmitting terminal with from the feedback signal of load-receipt.
D) reference signal for being superimposed correction signal and the feedback signal for being superimposed correction signal can pass through difference respectively
Transmission path (such as cable etc.) be transmitted in the phase discriminator as the Phase Processing device of second part.
3. the phase discriminator of Phase Processing device receives signal from synchronous terminal, and obtains feedback signal, reference signal, superposition
The feedback signal of correction signal, the phase relation being superimposed between the reference signal of correction signal.
4. relationship between phase of the computing unit of Phase Processing device based on resulting four signals of phase discriminator and
Phase change of the reference signal on transmitting terminal path that be above-mentioned being obtained by synchronous terminal and being transmitted to computing unit, obtains
The phase for the driving signal to be exported, with by the driving signal for being sent to load, to adjust the feedback for inputing to synchronous terminal
The phase of signal, so that inputing to the difference of the phase of the feedback signal of synchronous terminal relative to the phase of the reference signal of transmitting terminal
It is kept fixed (locking phase).
5. the phase that the synthesizer of Phase Processing device is obtained according to computing unit, output drive signal is to load.
More specifically, the final purpose of above-mentioned such synchronization system is by the phase of the point of G shown in Fig. 1 and A point
Difference locking, this can usually be realized by segmentation observing and controlling as described below.
Paragraph 1 is to be distributed section from the point of A shown in Fig. 1 to the reference signal of B point, and the phase stability on this section is decided by
Optical fiber/cable length/electrical length the stability for transmitting signal, is largely determined by the factors such as temperature, humidity, air pressure change.It should
The phase change of section can individually be measured by certain device and method (such as pass through above-mentioned transmitting terminal phase transformation and obtain device) or
It corrects.
Second segment is from B/C point to span line in the receiving end in D/E point (the two sections of paths BD, CE).It needs accurately to measure
It is the phase difference of B/C point-to-point transmission, but in fact, phase discriminator can only be in D/E position finding phase difference, the i.e. phase difference of D/E point
It can accurately measure.Therefore, it is necessary to try the anti-phase difference for pushing away B/C point.Wherein, main difficulty is BD and the two sections of paths CE
The length variation of (such as cable) is not necessarily consistent, in addition two phase demodulations in Phase Processing device corresponding to this two paths
Device may also be variant (currently often adding modulus conversion chip with filter circuit to realize phase discriminator).It therefore, can be same
It walks and a signal source is added in terminal, a correction signal is divided into two-way, be incorporated into reference signal and feedback signal respectively
In cable, measured on phase discriminator in this way be superimposed the reference signal of correction signal be superimposed the feedback signal of correction signal
Phase difference, so that it may represent phase difference caused by the difference of two cables.Using this phase difference, received in conjunction with phase discriminator
Feedback signal and reference signal D/E point phase difference, so that it may anti-feedback signal and the reference signal released is in the reality of B/C point
Border phase difference.
Therefore, from phase difference between the available A/B point of first segment, from phase difference between the available B/C point of second segment, thus
It can be obtained by phase difference between A/C point, recycle the output phase of computing unit control F point, so that it may so that the phase difference of A/C point
Stablize in required value (locking phase).
It can only accomplish the phase difference locking between A/C point in real system at present, rather than the phase difference locking between A/G point.
In addition, GC sections are presently mainly to guarantee synchronization accuracy by shortening length of cable, increase temperature control measures etc..
In the prior art, the change of phase difference caused by the transmission path from synchronous terminal to phase discriminator is to pass through correction signal
Come what is realized.But the prior art still has biggish phase drift when implementing.This mainly has following reason:
1. reference signal can occur vector superposed with correction signal in the case where reference signal is continuous wave.At this moment may be used
To use following two stacked system.
A) it uses with reference signal with the correction signal of the recurrent pulse formula of frequency.In phase demodulation, first in the cycle without school
Reference signal phase is obtained at the time of positive signal, then the phase of " reference signal+correction signal " is obtained at the time of having correction signal
Position, then subtracts the former with the latter, obtains the phase of correction signal.
In the first stacked system, space electric field Vector modulation can introduce nonlinear change, to carry out in the later period
When reducing phase deviation can occur for vector.
B) using the continuous correction signal with reference signal different frequency.In phase demodulation, first received signal is filtered
Wave, then measurement obtains the phase of the two respectively.
In the second way, the signal of different frequency mixed transport in the cable can also be inevitably generated frequency
Intermodulation phenomenon between rate makes signal deviate actual signal, thus leads to the problem of distortion correcting signal.
The case where described above is reference signal being continuous wave.And feedback signal the case where being continuous wave, is with reference signal
The case where continuous wave, is similar, and details are not described herein.
2. signal transmission passage is there are crosstalk, i.e. BD section in Fig. 1 with CE sections in signal on a channel have centainly
Power is transferred on another channel by space radiation etc..When two signals exist simultaneously on both channels, and at this
Moment is sampled, then collected data can include error message.That is, the cross-interference issue between there is signal.
3. being incorporated into the signal in two cables for two paths of BD and CE from the calibration source in synchronous terminal need to be
It is equiphase.And be usually in practice microwave power distributor from the device that calibration source is divided into two-way by signal, correction signal is mixed
The device of main signal is also microwave power distributor.And microwave power distributor may cause the phase change of the signal in above-mentioned two cables
It is unequal and unequal from dividing power splitter to the route and device closed among power splitter to may also lead to phase change, thus
Influence final result.That is, leading to correction signal branch unbalance.
4. digital modulus conversion chip or high-precision analog phase discriminator that the practical devices for phase demodulation are usually high speed.Its
The local oscillation signal that phase demodulation is all based on itself carrys out work.If the phase difference of the local oscillation signal of two panels modulus conversion chip is at any time
Between change, then the phase of the same input signal both measured is also different.That is, phase reference when leading to two channel samples
Inconsistence problems.
In summary, the locking phase precision between transmitting terminal and receiving end how is improved, is that the technology of a urgent need to resolve is asked
Topic.
Summary of the invention
One of in order to solve the above problem, the present invention proposes a kind of synchronization system and particle accelerator.
According to one embodiment of present invention, a kind of receiving end of synchronization system is provided, comprising: synchronous terminal (2010),
It is arranged in the transmitting terminal (1000) for sending reference signal to the synchronous terminal (2010) and for receiving the synchronous terminal
Between the Phase Processing device (2020) of output, including transmitting terminal phase transformation obtains device (2011) and receiving end phase transformation obtains device
(2012)；Phase Processing device (2020), setting is between the synchronous terminal (2010) and load (3000), wherein described
Transmitting terminal phase transformation obtains device (2011) and obtains the phase that reference signal is transmitted to synchronous terminal (2010) from transmitting terminal (1000)
Variation, and send the phase change of reference signal to Phase Processing device (2020)；And wherein, receiving end phase transformation obtains
Device (2012) chronologically switch reference signal and come self-supported (3000) feedback signal to Phase Processing device conducting, with
So that Phase Processing device (2020) is based on received reference signal and feedback signal, received reference signal and feedback letter are obtained
Phase difference number at Phase Processing device (2020), and it is based on the phase difference, it obtains reference signal and feedback signal and is receiving
It holds phase transformation to obtain the phase difference at device (2012), device is obtained in receiving end phase transformation based on reference signal and feedback signal
(2012) phase change of phase difference and the reference signal at, obtains the phase of the driving signal of load to be sent to, with
By driving signal, the phase of the reference signal that the phase and transmitting terminal for adjusting the feedback signal for inputing to synchronous terminal are sent it
Difference is kept fixed.
According to one embodiment of present invention, a kind of synchronization system is provided, comprising: at least one above-mentioned receiving end
(2000)；Transmitting terminal (1000), for sending reference signal at least one described receiving end, wherein each receiving end receives institute
State reference signal, and to load output drive signal.
According to one embodiment of present invention, a kind of particle accelerator is provided, comprising: above-mentioned synchronization system, for real
Synchronization needed for existing particle accelerator.
The present invention can be improved the locking phase precision of transmitting terminal and receiving end, improve the precision of synchronization system.
Detailed description of the invention
Disclosure illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in disclosure illustrative embodiments, identical appended drawing reference
Typically represent same parts.
Fig. 1 shows the schematic block diagram of the synchronization system of the prior art.
Fig. 2 shows the schematic block diagrams of the synchronization system receiving end of an exemplary embodiment according to the present invention.
Fig. 3 shows the schematic block diagram of the illustrative implementation of a synchronization system receiving end.
Fig. 4 shows the schematic block diagram of the synchronization system receiving end of another exemplary embodiment according to the present invention.
Fig. 5 shows the schematic block diagram of the synchronization system receiving end of further exemplary embodiment according to the present invention.
Fig. 6 shows the schematic block diagram of the illustrative implementation of another synchronization system receiving end.
Fig. 7 shows the schematic block diagram of the synchronization system receiving end of another exemplary embodiment according to the present invention.
Fig. 8 shows microblogging according to an embodiment of the invention and switchs cascade diagram.
Fig. 9 shows the schematic block diagram of synchronization system according to an embodiment of the invention.
Figure 10 shows the schematic block diagram of particle accelerator according to an embodiment of the invention.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that the disclosure can be realized without the embodiment party that should be illustrated here by various forms
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is completely communicated to those skilled in the art.What needs to be explained here is that number, serial number and attached drawing in the application
Mark it is merely for convenience description and occur, for step of the invention, sequence etc. be not limited in any way, unless
The execution that step has been explicitly pointed out in specification has specific sequencing.
For technical problem described in background technique, the invention proposes a kind of new synchronization system receiving ends.
As shown in Fig. 2, a kind of synchronization system receiving end 2000 of an exemplary embodiment according to the present invention can wrap
Include synchronous terminal 2010 and Phase Processing device 2020.
Wherein, synchronous terminal 2010 can be set for the synchronous terminal send reference signal transmitting terminal 1000 with
Between the Phase Processing device 2000 of output for receiving the synchronous terminal, Phase Processing device 2020 be can be set in synchronization
Between terminal 2010 and load 3000.
As shown in Fig. 2, synchronous terminal 2010 may include that transmitting terminal phase transformation obtains device 2011 and receiving end phase transformation acquisition
Device 2012.
Transmitting terminal phase transformation obtains device 2011 and is transmitted to synchronous terminal 2010 from transmitting terminal 1000 for obtaining reference signal
The phase change of (path AB shown in figure), and send the phase change of reference signal to Phase Processing device 2020.
Receiving end phase transformation obtain device 2012 chronologically switch reference signal with self-supported 3000 feedback signal to phase
The conducting of position processing device 2020, to realize that reference signal is connected with the timesharing of feedback signal, avoid makes in the prior art
Caused by power splitter the problem of " the acquisition crosstalk of reference signal and feedback signal ", thus improve transmitting terminal and receiving end it
Between locking phase precision.This is because the power splitter that uses of the prior art cannot in the conducting of synchronous terminal active switching signal, and
It can only chronologically could be received in no correction signal with reference to letter when receiving, if such as correction signal is recurrent pulse
Number, there is the signal for receiving reference signal when correction signal and being formed by stacking with correction signal (to be superimposed the reference letter of correction signal
Number), that is, the prior art can not realize that reference signal is connected with the timesharing of feedback signal in receiving end.
In the present invention, the switching of switching device can be controlled by sequence circuit.
Further, Phase Processing device 2020 based on from receiving end phase transformation obtain the received timesharing of device 2012 be connected
Reference signal and feedback signal, phase of the reference signal and feedback signal that can be received at Phase Processing device 2020
Difference.Based on the phase difference, Phase Processing device 2020 can be back-calculated to obtain reference signal and feedback signal, and in receiving end, phase transformation is obtained
Obtain the phase difference at device 2012.Then, it is obtained at device 2012 based on reference signal and feedback signal in receiving end phase transformation
Phase difference and transmitting terminal phase transformation obtain the phase change for the reference signal that device transmission comes, and obtain the driving letter of load to be sent to
Number phase, by driving signal, to adjust the phase and the reference that sends of transmitting terminal of the feedback signal for being input to synchronous terminal
The difference of the phase of signal is kept fixed.
Moreover, compared with the prior art, the embodiment of the present invention eliminates calibration source (correction signal) in synchronous terminal, thus
Avoid distortion correcting signal problem described in background technique and correction signal branch unbalance.
Hereby it is achieved that the locking phase between more accurate synchronization system transmitting terminal and receiving end.
The example of specific locking phase implementation can be as follows.So-called locking phase can pass through control driving signal herein
Phase, so that the phase (phase for being input to the feedback signal of synchronous terminal) and A point of the feedback signal of the C point gone out shown on figure
Reference signal phase (transmitting terminal send reference signal phase) difference fix.For example, Phase Processing device 2020 is defeated
N-th driving pulse out, the pulse reach synchronous terminal and (specifically, reach receiving end phase transformation and obtain device after overload
2012), become " the feedback signal N for being input to synchronous terminal ", after path transmission reaches Phase Processing device 2020, phase
Processing unit 2020 can be learnt come (how counter push away will be described in detail below) by counter push away and " be input to the feedback letter of synchronous terminal
Whether the phase difference number between N " (in the feedback signal of C point) and the reference signal of A point has fluctuation.Originally the phase difference should be
Fixed value, still, due to line transmission etc., possible phase difference can not continue to fix, so needing through setting driving
The phase of signal adjusts the phase of the feedback signal for being input to synchronous terminal, so that the phase difference is kept solid to a certain extent
It is fixed.In the case where the minor fluctuations delta of phase difference occurs, Phase Processing device 2020 will export the N+1 driving arteries and veins
When rushing, the phase of driving signal is cut the delta value.When such the N+1 pulse reaches C point, just last time is had more
Delta entangles back.Hereby it is achieved that inputing to the phase of the phase of the feedback signal of synchronous terminal and the reference signal of transmitting terminal transmission
The effect that is kept fixed of difference.Specifically, may be considered the phase by modification driving signal in F point, make to input to same
The difference of the phase for the reference signal that the phase and transmitting terminal for walking the feedback signal of terminal are sent is constant.
For " keep phase difference fix or constant ", it will be understood by those skilled in the art that not meaning that technically
Keep phase difference absolutely constant, that is to say, that " fixation " as described herein or " constant " refers to relative to such as one
Fixed phase difference (such as 1 degree or 20 degree or 80 degree etc phase difference), makes actual phase difference to a certain extent
Perhaps it is kept in a certain range and it will be understood by those skilled in the art that the degree or range and synchronization system
Precision is related, such as the deviation of phase difference is 0.1 degree etc.In consideration of it, herein without the also inconvenient essence kept for phase difference
Degree is excessively described, as long as it will be appreciated that above-mentioned implication.
Further, for implementing example, above-mentioned Phase Processing device 2020 may include phase discriminator, letter
Number processing unit and signal output apparatus etc., as shown in Figure 3.
Wherein, phase discriminator chronologically can receive signal, such as reference signal above-mentioned, feedback letter from synchronous terminal
Number.The available phase relation being input between signal therein of phase discriminator, such as obtain reference signal and feedback signal
Phase difference.
Signal processing apparatus (such as computing unit etc.) can receive the phase change of reference signal from synchronous terminal, and can
With the phase relation and the received reference signal of signal processing apparatus between the received signal that is obtained based on above-mentioned phase discriminator
Phase change, the phase of driving signal is obtained, to adjust the feedback signal for inputing to synchronous terminal by driving signal
Phase, the phase for the reference signal for sending itself and transmitting terminal is kept fixed.
Signal output apparatus can be generated based on the phase of obtained driving signal for driving the driving signal loaded simultaneously
It is sent to load.Here, driving signal is only used for driving load, therefore need to only be concerned about the phase size of driving signal, the present invention
In its amplitude and frequency are not limited particularly.
It should be noted that being intended merely to facilitate a realization of the Phase Processing device 2020 provided for the sake of understanding above
This more than one kind of example, the actually implementation of Phase Processing device 2020, details are not described herein.
Optionally, according to an embodiment of the invention, as shown in figure 3, above-mentioned receiving end phase transformation obtain device 2012 can be with
Including the first switching device 20121, two input terminal can receive the reference signal from transmitting terminal 1000 respectively and come from
The feedback signal of load 3000, for via the output end and Phase Processing device 2020 for connecting first switching device 20121
Input terminal path, timing transmission reference signal and feedback signal.
By using the first switching device 20121, the timing transmission of reference signal and feedback signal may be implemented, to keep away
The problem of using " the acquisition crosstalk of reference signal and feedback signal " caused by power splitter in the prior art is exempted from, to improve
Locking phase precision between transmitting terminal and receiving end.
Moreover, by using the first switching device 20121, reference signal and feedback signal are realized on the same channel
Timing transmission, the problem of so as to avoid " phase reference caused by two channel samples is inconsistent " in the prior art, thus into
One step improves the locking phase precision between transmitting terminal and receiving end.
It needs exist for illustrating, for the sake of succinctly understanding, transmitting terminal phase transformation is omitted in Fig. 3 and obtains device and its inputs defeated
Signal relation out, that is to say, that synchronization system receiving end 2000 shown in Fig. 3 actually should be comprising shown in Fig. 2 such
Transmitting terminal phase transformation obtain device 2011.
It note that synchronization system receiving end shown in Fig. 3 is a kind of more specific of synchronization system receiving end shown in Fig. 2
Implementation.Specifically, the scheme of Fig. 3 realizes receiving end phase transformation by the first switching device 20121 and obtains device 2012
(transmission) function is connected in signal timesharing, however, being accomplished that single pass signal timesharing is led by the first switching device 20121
Logical (transmission).The embodiment of the signal timesharing conducting (transmission) of multichannel will be illustrated below.Moreover, by being described below
Multi channel signals timing transmission, more feedback signals may be implemented and receive (alternatively referred to as " multipath reception "), be achieved in one
The advantageous effects that receiving end can be shared by multiple load feedback ends.
The correction signal of calibration source generation can be used in the case where transmitting signal for multichannel, by by correction signal
It is incorporated into reference signal and each feedback signal from each load feedback end, has been superimposed correction in Phase Processing device 2020
The phase difference of the reference signal of signal and each feedback signal for being superimposed correction signal may thereby determine that corresponding each transmission path
The phase difference of reference signal and feedback signal caused by diameter (such as cable).
As shown in figure 4, receiving end phase transformation obtain device 2012 may include the second switching device 20122, at least one the
Three switching devices 20123 and calibration source 2013.That is, in embodiment shown in Fig. 4, the second switching device 20122, at least one
A third switching device 20123 and calibration source 2013 collectively form receiving end phase transformation and obtain device 2012, but are limited to a piece
Module frame and appended drawing reference that receiving end phase transformation obtains device 2012 are not shown in Fig. 4 for width.
Moreover, illustrating only two third switching devices as space is limited, in Fig. 4, in order to distinguish, it is referred to as first (
One) third switching device 201231 and second (second) third switching device 201232, can actually have more
Three switching devices.For convenience's sake, all third switching devices are referred to as 20123 herein.
As shown in figure 4, first third switching device 201231 is used to chronologically switch from the anti-of the first load 3001
Feedback signal and correction signal, also, Phase Processing device is based on from first third switching device received signal (correction letter
Number, be superimposed the first feedback signal of correction signal) between phase relation, obtain the first output drive signal (shown in Fig. 4
Output drive signal 1), be transmitted to the first load 3001.
Similarly, second third switching device 201232 is used to chronologically switch the feedback letter from the second load 3002
Number and correction signal, also, Phase Processing device be based on it is (correction signal, folded from second third switching device received signal
Added the second feedback signal of correction signal) between phase relation, it is (defeated shown in Fig. 4 to obtain the second output drive signal
Driving signal 2 out), it is transmitted to the second load 3002.
And so on, n-th third switching device is used to chronologically switch feedback signal and correction letter from N load
Number, also, Phase Processing device is based on from n-th third switching device received signal, (correction signal has been superimposed correction signal
N feedback signal) between phase relation, obtain N output drive signal, be transmitted to N load.Here, N can be greater than
Equal to 2.
Calibration source 2013 can be set between the second switching device 20122 and these third switching devices, for generating
The correction signal being superimposed upon in reference signal and each feedback signal from each load.
In the present embodiment, the second switching device 20122 can chronologically switch reference signal and correction signal, thus make
Phase Processing device 2020 can timesharing obtain reference signal and the reference signal for being superimposed correction signal.
Further, Phase Processing device 2020 when sampled reference signal is with the reference signal for being superimposed correction signal,
And when sampling each feedback signal with the respective feedback signal for being superimposed correction signal, respectively by corresponding access come into
Row.That is, in the case where multiple feedback signal of the multipath reception from multiple loads, the access of Phase Processing device sampled signal
It is also multichannel.
Each third switching device chronologically switches the feedback signal and correction signal of respective load, so that Phase Processing
Device 2020 chronologically the phase transformation from receiving end obtain device 2012 receive reference signal, be superimposed correction signal reference signal,
Correction signal and each feedback signal for being superimposed correction signal, and it is based on received reference signal, correction signal, superposition
The reference signal of correction signal and the phase relation being superimposed between each feedback signal of correction signal, obtain received ginseng
It examines the phase difference of signal and feedback signal at Phase Processing device 2020, and is based on the phase difference, obtain reference signal and anti-
Feedback signal obtains the phase difference at device 2012 in receiving end phase transformation, and based on reference signal and feedback signal, in receiving end, phase transformation is obtained
The phase change for obtaining the phase difference and above-mentioned reference signal at device 2012, obtains the phase of the driving signal of load to be sent to
Position, to adjust the phase and the reference signal of transmitting terminal transmission of the feedback signal for inputing to synchronous terminal by driving signal
The difference of phase is kept fixed.
Here, when there is correction signal, pass through about correction signal in the case where correction signal is recurrent pulse formula
Correction signal is imported Phase Processing device by above-mentioned switching device；When there is no correction signal, pass through above-mentioned switching device
Reference signal/feedback signal is imported into Phase Processing device.
In the case where correction signal is continuous signal, when can generate a corresponding timing according to control bandwidth demand
Correction signal or reference/feedback signal are chronologically imported Phase Processing device by switching device, thus complete signal by sequence
Time sharing transmissions.
Correspondingly, in Phase Processing device, can be determined according to timing it is collected be correction signal also with reference to
Signal or feedback signal.
The embodiment of the present invention is suitable for the scene of multiple feedback signal of the multipath reception from multiple loads.By physically
(the second switching device for switching reference signal and correction signal corrects multiple switching devices of switching signal with for switching
At least one third switching device of signal and each feedback signal), it not only solves when correction signal is periodic pulse signal,
With reference to/feedback signal and correction signal it is vector superposed caused by " phase deviation " problem, and due to can physically switch letter
Number, therefore the correction signal of recurrent pulse formula can be used completely, to solve when correction signal is and reference/feedback signal
When the continuous signal of different frequencies, between synchronous terminal and Phase Processing device caused by the signal of cable transmission different frequency
The problem of " distortion correcting signal ".
Moreover, the embodiment of the present invention can also realize a receiving end for the multipath reception of multiple feedback signal, significantly
Improve the utilization efficiency of receiving device.
In addition, as shown in figure 5, according to one embodiment of present invention, receiving end phase transformation obtains device 2012 and can also wrap
Include correction being arranged between calibration source and the second switching device and each third switching device, for controlling calibration source generation
At least one the 4th switching device of the conducting direction of signal, as shown in Figure 5.For the sake of convenience, herein by all
Four switching devices are referred to as 20124.
As shown in figure 5, obtaining in device 2012 in receiving end phase transformation, the first (first) the 4th switching device 20141 connects
It connects between calibration source 2013 and the second switching device 20122 and first (first) third switching device 20131, for controlling
The conducting direction for the correction signal that calibration source generates, that is, so that (second cuts the oneth the 4th switching device 20141 for conducting upwards
20122 direction of changing device) or conducting (20131 direction of the first third switching device) downwards.
Similarly, second (second) the 4th switching device 20142 is connected to calibration source 2013 and the second switching device
20122 and second between (second) third switching device 20132, the conducting side of the correction signal for controlling calibration source generation
To, that is, so that conducting (20122 direction of the second switching device) or the conducting downwards upwards of the 2nd the 4th switching device 20142
(20132 direction of the second third switching device).
And so on, for the 4th switching device of N (n-th), it is again connected to calibration source 2013 and the second switching
Between device 20122 and N (n-th) third switching device, the conducting direction of the correction signal for controlling calibration source generation,
That is, make the 4th switching device of N be connected upwards (20122 direction of the second switching device) or downwards conducting (N third is cut
Changing device direction).
From the foregoing, it will be observed that the quantity of the 4th switching device should be identical with the quantity of third switching device.
In the present embodiment, by using each 4th switching device, be physically isolated correction signal and reference signal and
The incorporation (superposition) of feedback signal, effectively prevents the crosstalk between reference signal and feedback signal, thus improve transmitting terminal and
Locking phase precision between receiving end.
In order to make it easy to understand, Fig. 6 show one it is simplified for showing the second switching device, third switching device and the
The example of connection between four switching devices.
In Fig. 6, the second switching device is realized using microwave switch 1, and third switching device is using microwave switch 2 come real
Existing, the 4th switching device is realized using microwave switch 3.
Here it is possible to make microwave switch 3 in such as odd number impulse using the sequential control circuit for control sequential
Top conducting opens microwave in even pulse for making correction signal merge with the reference signal transmitted by microwave switch 1
3 lower section conductings are closed, are merged for making correction signal and passing through the feedback signal that microwave switch 2 transmits, or conversely, for example even
Make to be connected above microwave switch 3 when rapid pulse rushes, for making correction signal merge with the reference signal transmitted by microwave switch 1,
Make to be connected below microwave switch 3 in odd number impulse, the feedback signal meeting for making correction signal with transmitting by microwave switch 2
It closes, so that correction signal is used alternatingly in two channels BD, CE, is not overlapped in timing, corresponding correction signal acquisition
Alternately by odd even pulse, to avoid the crosstalk of two channel correcting signals.
Here, the control of odd even pulse can be realized for example by digital circuit T trigger.
Control for microwave switch 1 and 2, can for example in this way: control microwave switch 1 and 2, that is, having feedback pulse
When, microwave switch 1 is switched into lower end, microwave switch 2 is switched into upper end, makes the moment without reference to signal, on the channel BD
The acquisition (carrying out on the channel CE) for obtaining feedback signal carries out at the time of without reference to signal, prevents reference signal and feedback letter
Crosstalk between number；Then, similarly, microwave switch 1 and 2 is controlled, that is, when there is reference pulse, microwave switch 1 is switched to
End, switches to lower end for microwave switch 2, the moment is made not have feedback signal on the channel CE, so that the acquisition of reference signal is (in BD
Carried out on channel) it is carried out at the time of no feedback signal, prevent the crosstalk between reference signal and feedback signal.
That is, according to an embodiment of the invention, can by sequential control circuit control the 4th switching device conducting direction,
So that by odd even pulse come alternately correction signal with to be input to Phase Processing device via corresponding second switching device
The superposition of 2020 reference signal and correction signal with to be input to Phase Processing device via corresponding third switching device
The superposition of 2020 feedback signal.
In the present embodiment, pass through the second switching device, third switching device, the 4th switching device, reference signal, feedback
Signal has been kept completely separate in timing with reference to correction signal, feedback compensation signal this four signals.
Not only solve described in background technique that " signal of different frequency mixed transport in the cable, can not yet as a result,
Intermodulation phenomenon between evitable generation frequency makes signal deviate actual signal " the problem of, it also solves between signal transmission passage
Cross-interference issue, i.e., the influence of reference signal crosstalk is necessarily had when acquiring feedback signal, and when acquiring reference signal, must
The problem of so having the influence of feedback signal crosstalk.
Further optionally, as shown in fig. 7, can also concatenate a microwave switch 4 before microwave switch 1 is used as the 5th
Switching device, to independently control the on-off of reference signal by control microwave switch 4.
Similarly, as shown in fig. 7, a microwave switch 5 can also be concatenated before microwave switch 2 as the 6th switching dress
It sets, to independently control the on-off of feedback signal by control microwave switch 5.
That is, according to another embodiment of the invention, phase transformation acquisition device 2012 in receiving end can also be included in second and cut
The 5th switching device (microwave switch be arranged before changing device 20122, for switching the conducting of reference signal to synchronous terminal
4) the 6th switching dress, and/or before third switching device being arranged, for switching the conducting of feedback signal to synchronous terminal
Set (microwave switch 5).
By above-mentioned microwave switch 4/5, the on-off of (independence) signal can be preferably controlled, that is, can for example have
The transmission of feedback signal is turned off when reference signal, similarly, turns off the transmission of reference signal, when there is feedback signal further to prevent
Stop signal crosstalk.
Here, when using microwave switch 4 and/or 5, can also be subtracted without using microwave switch 3 with saving device space
Few connection line.
It is of course also possible to not only use microwave switch 4 and/or 5, but also microwave switch 3 is used, both independent control reference is believed in this way
Number and/or feedback signal on-off, and correction signal can be used alternatingly, can effectively avoid the interference between signal.
Need exist for illustrating, be still not shown as space is limited, in Fig. 7 receiving end phase transformation obtain device 2011 module frame and
The module frame and appended drawing reference of synchronous terminal 2010 is also not shown in appended drawing reference, but actually in the present embodiment is still packet
Them are included, and its setting is consistent with Fig. 2.
For the implementation of above-mentioned each switching device, can as using microwave switch as described above, including
Single-pole double throw microwave switch or monopole single throw microwave switch.
Microwave switch described herein can be the electric-controlled switch device applied to microwave signal, be functionally similar to relay
Device.Typical single-pole double throw microwave switch has a control terminal CTRL, two input terminal RF1 and RF2, an output end COM.When
When control terminal gives a control voltage, input terminal RF1 signal can be transferred to output end COM.When control terminal does not give control electricity
When pressure or control voltage are 0, input terminal RF2 signal can be transmitted to output end COM.
Microwave switch has the isolation problem of interchannel.For example, using in Fig. 3 as first switching device 20121
It should be ideally that only reference signal can enter rear end, but reality when leading on the microwave switch for microwave switch 1
Also the lower end feedback signal power that certain power is had on border enters rear end, causes signal cross-talk.
The isolation of currently used microwave switch device is 60dB, that is, has millionth power can be from not connected
Terminal enters common end, very important influence is still suffered from when required precision is higher, such as in currently used 3GHz (wave
Long 10cm) on microwave, the synchronous sequence shake that may cause is about 10~30fs.
Therefore, according to one embodiment of present invention, when the isolation of microwave switch is inadequate, cascade side can be used
Formula improves isolation performance, until reaching requirement.It is common using needing under, the isolation of two-stage cascade 120dB can be with
So that crosstalk levels is less than 1fs, shakes, can ignore far below caused by other factors.Workable cascade system such as Fig. 8 institute
Show.Except single-pole double-throw switch (SPDT), single-pole single-throw switch (SPST) can also be used to carry out cascade or two kinds of switch Mixed cascading, with obtain height every
From degree.
It can be seen that for realizing switching device microwave switch can by least two microwave switch devices cascade and
At, thus improve microwave switch isolation performance.
In the present invention, the crosstalk of signal can be physically cut off by using switching device, realizes that the timesharing of signal passes
It is defeated.For example, realizing the noiseless biography of timesharing of feedback signal and reference signal on same access by using the first switching device
It is defeated.
In addition, the present invention is also solving vector superposed lead by using the second switching device and multiple third switching devices
On the basis of " phase deviation problem ", " signal cross-talk " problem and " distortion correcting signal " problem for causing etc., multichannel is realized
Feedback reception.
Furthermore also by using the 4th switching device, physically timesharing switch correction signal to the superposition of reference signal and
To the superposition of feedback signal, that is, so that in the reference signal path and feedback signal path for go to Phase Processing device alternately
Using correction signal, to efficiently solve the cross-interference issue of correction signal on two channels.
Moreover, individually control is with reference to letter also by using the 5th switching device and the 6th switching device (microwave switch 4,5)
On-off number with feedback signal is having the transmission that reference signal (signal 1) is closed at the time of feedback signal (signal 2) acquisition, together
Reason closes the transmission of feedback signal (signal 2) at the time of having reference signal (signal 1).
Thus, it is possible to realize that any moment is no more than 1 in the signal that Phase Processing device is collected.
By now it should be appreciated that various embodiments of the present invention can effectively improve the locking phase precision between transmitting terminal and receiving end.
Fig. 9 shows synchronization system according to an embodiment of the invention.
As shown in figure 9, synchronization system 100 according to an embodiment of the invention may include that at least one is above-mentioned same
Walk system receiving terminal 2000 and for sending reference signal transmitting terminal 1000 at least one receiving end.
Wherein, each receiving end receives reference signal, and to its corresponding load output drive signal.
It is to be appreciated that receiving end here can be the received scene of single channel (such as shown in Fig. 2,3 etc.), it can also be with multichannel
Received scene (such as shown in Fig. 4 etc.).
Synchronization system provided by the invention can effectively improve the locking phase precision between transmitting terminal and receiving end.
Figure 10 shows particle accelerator according to an embodiment of the invention.
As shown in Figure 10, particle accelerator 1 according to an embodiment of the invention includes above-mentioned for realizing particle
The synchronization system 100 of synchronization needed for accelerator.
By using above-mentioned synchronization system 100, particle accelerator according to an embodiment of the present invention be can be realized preferably
Performance.
It will be apparent to one skilled in the art that various illustrative logical blocks, module, circuit in conjunction with described in disclosure herein
It may be implemented as the combination of electronic hardware, computer software or both with algorithm steps.
What flow chart and block diagram in attached drawing etc. showed the system and method for multiple embodiments according to the present invention can
The architecture, function and operation being able to achieve.In this regard, each box in flowchart or block diagram can represent a mould
A part of block, program segment or code, a part of the module, section or code include one or more for realizing rule
The executable instruction of fixed logic function.It should also be noted that in some implementations as replacements, the function of being marked in box
It can also be occurred with being different from the sequence marked in attached drawing.For example, two continuous boxes can actually be substantially in parallel
It executes, they can also be executed in the opposite order sometimes, and this depends on the function involved.It is also noted that block diagram and/
Or the combination of each box in flow chart and the box in block diagram and or flow chart, can with execute as defined in function or
The dedicated hardware based system of operation is realized, or can be realized using a combination of dedicated hardware and computer instructions.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (12)
1. a kind of receiving end of synchronization system (2000) characterized by comprising
Synchronous terminal (2010) is arranged in the transmitting terminal (1000) for sending reference signal to the synchronous terminal (2010) and uses
In receive the synchronous terminal output Phase Processing device (2000) between, including transmitting terminal phase transformation obtain device (2011) with
Receiving end phase transformation obtains device (2012)；
Phase Processing device (2020), setting is in the synchronous terminal (2010) and loads between (3000),
Wherein, the transmitting terminal phase transformation obtains device (2011) acquisition reference signal and is transmitted to synchronous terminal from transmitting terminal (1000)
(2010) phase change, and send the phase change of reference signal to Phase Processing device (2020)；And
Wherein, receiving end phase transformation obtains device (2012) and chronologically switches reference signal and carry out the feedback signal of self-supported (3000)
It is obtained to the conducting of Phase Processing device so that Phase Processing device (2020) is based on received reference signal and feedback signal
To the phase difference of received reference signal and feedback signal at Phase Processing device (2020), and it is based on the phase difference, obtained
The phase difference of reference signal and feedback signal at receiving end phase transformation acquisition device (2012), is based on reference signal and feedback signal
The phase change of phase difference and the reference signal at device (2012) is obtained in receiving end phase transformation, obtains being sent to load
Driving signal phase, to adjust the phase and hair for inputing to the feedback signal of synchronous terminal (2010) by driving signal
The difference of the phase for the reference signal that sending end is sent is kept fixed.
2. receiving end as described in claim 1, which is characterized in that
The Phase Processing device includes phase discriminator, signal processing apparatus and signal output apparatus,
Wherein, the phase discriminator chronologically receives signal from synchronous terminal, and obtains the phase being input between signal therein
Relationship；
The signal processing apparatus receives the phase change of the reference signal from synchronous terminal, and based between the signal
Phase relation and the phase change, obtain the phase of driving signal；
Phase of the signal output apparatus based on the driving signal is generated for driving the driving signal of load concurrent
Give load.
3. receiving end as described in claim 1, which is characterized in that
It includes the first switching device (20121) that the receiving end phase transformation, which obtains device (2012), and two input terminals receive respectively to be come
From the reference signal of transmitting terminal (1000) and the feedback signal of next self-supported (3000), for via connection first switching device
(20121) path of the input terminal of output end and Phase Processing device, reference signal and the feedback letter described in timing transmission
Number.
4. receiving end as described in claim 1, which is characterized in that
The receiving end phase transformation obtain device (2012) include the second switching device (20122), at least one third switching device,
And calibration source (2013),
Wherein, the calibration source (2013) is arranged in the second switching device (20122) and at least one described third switching device
Between, reference signal and the correction letter in each feedback signal from least one load (3000) are superimposed upon for generating
Number；
Wherein, the second switching device (20122) chronologically switches reference signal and correction signal, and each third switching device is on time
The feedback signal of sequence switching respective load and the correction signal, so that Phase Processing device (2020) is chronologically from receiving end
Phase transformation obtains device (2012) and receives reference signal, the reference signal for being superimposed correction signal, correction signal and be superimposed school
Each feedback signal of positive signal, and based on received reference signal, correction signal, the reference signal for being superimposed correction signal, with
And it has been superimposed the phase relation between each feedback signal of correction signal, received reference signal and feedback signal are obtained in phase
Phase difference at processing unit (2020), and it is based on the phase difference, obtaining reference signal and feedback signal, phase transformation obtains in receiving end
The phase difference at device (2012) is obtained, the phase at device (2012) is obtained in receiving end phase transformation based on reference signal and feedback signal
The phase change of potential difference and the reference signal obtains the phase of driving signal and driving signal is output to load.
5. receiving end as claimed in claim 4, which is characterized in that
It further includes in the calibration source and second switching device and each that the receiving end phase transformation, which obtains device (2012),
Conducting direction being arranged between three switching devices, for controlling the correction signal that the calibration source generates at least one the 4th
Switching device.
6. receiving end as claimed in claim 4, which is characterized in that
The receiving end phase transformation obtains device (2012) and is arranged before the second switching device, is used to switch with reference to letter
Number to synchronous terminal conducting the 5th switching device, and/or be arranged before third switching device, for switching feedback letter
Number to synchronous terminal conducting the 6th switching device.
7. the receiving end as described in any one in claim 1~6, which is characterized in that each switching device is single
Dpdt double-pole double-throw (DPDT) microwave switch or monopole single throw microwave switch.
8. receiving end as claimed in claim 7, which is characterized in that wherein, the microwave switch is by least two microwave switches
Device cascades.
9. synchronization system as claimed in claim 5, which is characterized in that
The conducting direction of the 4th switching device is controlled by sequential control circuit, so that coming alternately institute by odd even pulse
State correction signal and the reference signal that Phase Processing device (2020) are input to via corresponding second switching device (20122)
Superposition and the correction signal with to be input to the anti-of Phase Processing device (2020) via corresponding third switching device
The superposition of feedback signal.
10. the receiving end as described in any one in claim 4~6, which is characterized in that the Phase Processing device
(2020) when sampled reference signal is with the reference signal for being superimposed correction signal and sample each feedback signal be superimposed
When each feedback signal of correction signal, carried out respectively by corresponding access.
11. a kind of synchronization system characterized by comprising
At least one receiving end (2000) as described in any one in claim 1~10；
Transmitting terminal (1000), for sending reference signal at least one described receiving end,
Wherein, each receiving end receives the reference signal, and to load output drive signal.
12. a kind of particle accelerator characterized by comprising
Synchronization system as claimed in claim 11, for realizing synchronization needed for particle accelerator.
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| CN114142582A (en) * | 2021-10-14 | 2022-03-04 | 合肥国轩高科动力能源有限公司 | Be applicable to multichannel DC power supply parallel arrangement |
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