CN102916921A - Method, device and system for carrier synchronization - Google Patents
Method, device and system for carrier synchronization Download PDFInfo
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- CN102916921A CN102916921A CN2012103492070A CN201210349207A CN102916921A CN 102916921 A CN102916921 A CN 102916921A CN 2012103492070 A CN2012103492070 A CN 2012103492070A CN 201210349207 A CN201210349207 A CN 201210349207A CN 102916921 A CN102916921 A CN 102916921A
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Abstract
The embodiment of the invention provides a method, a device and a system for carrier synchronization, relating to the communication field. The method, the device and the system are capable of solving the problem that the carrier cannot synchronize when a single-point failure appears, realizing the seamless changeover of carrier synchronization signals in failure, and improving the stability and reliability of the system. The carrier synchronization method comprises the following steps: receiving a main carrier synchronization signal sent by a first mainframe according to a preset period, and adjusting an own carrier signal according to the main carrier synchronization signal, so that the own carrier signal is synchronized with the main carrier synchronization signal; receiving a backup carrier synchronization signal from a second mainframe, wherein a backup carrier synchronization signal is sent after the second mainframe receives the main carrier synchronization signal sent according to the preset period; the backup carrier synchronization signal is synchronized with the main carrier synchronization signal; if the main carrier synchronization signal from the first mainframe is not received within the preset period, the own carrier signal is adjusted according to the backup carrier synchronization signal, so that the adjusted own carrier signal is synchronized with the main carrier synchronization signal.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of carrier synchronization method, Apparatus and system.
Background technology
In the inverter power module parallel operation, the impact that Circuits System is produced in order to control high frequency circulation, we often adopt carrier synchronization method that it is controlled.Wherein, carrier synchronization (Carrier Synchronization) refers in order to realize frequency and the phase place with modulated signal, the pure oscillation identical with carrier component be the amplitude demodulation of addition respectively, namely realize coherent demodulation, thereby receiving terminal is produced and technology and the method for transmitting terminal with the frequency in-phase signal.
The method of existing techniques in realizing parallel module carrier synchronization is, main frame sends the carrier synchronization signal, other slaves are caught this synchronizing signal and are calculated slave and the carrier phase difference of main frame, then adjust self carrier cycle according to the carrier phase difference that calculates, remedy and differ, thereby reach the effect of carrier synchronization.
But, the inventor finds, adopt in the process of the above-mentioned carrier synchronization of existing techniques in realizing, when Single Point of Faliure appears in carrier synchronization, wherein, Single Point of Faliure is the situation that has only occurred a fault in the hypothesis whole system, for example, slave can't Receiving Host carrier synchronization signal or appearance and the aerial lug fault that gets loose, and can't realize carrier synchronization, especially externally in the situation that line gets loose, system even can't detect fault.
Summary of the invention
Embodiments of the invention provide a kind of carrier synchronization method, Apparatus and system, the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, and the seamless switching of carrier synchronization signal further, has improved Systems balanth and reliability when realizing fault.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, the embodiment of the invention provides a kind of carrier synchronization method, comprise and receive the main carrier synchronizing signal that the first main frame sends according to predetermined period, and according to described main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and described main carrier synchronizing signal are synchronous, it is characterized in that described method also comprises:
Reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
If in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
In the possible implementation of the first, according to first aspect, the method also comprises:
The described carrier synchronization signal for subsequent use of buffer memory.
In the possible implementation of the second, in conjunction with first aspect or the possible implementation of the first, the method also comprises:
If in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to the carrier synchronization signal described for subsequent use of buffer memory, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
In the third possible implementation, in conjunction with first aspect or possible implementation or the possible implementation of the second of the first, if the described described main carrier synchronizing signal that in described predetermined period, does not receive from described the first main frame, then according to after described carrier synchronization signal adjustment for subsequent use self carrier signal, the method also comprises:
The Broadcast Fault signal, so that each slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
Second aspect, the embodiment of the invention also provide a kind of carrier synchronization method, and the method comprises:
Send carrier synchronization signal for subsequent use to slave, if so that described slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then described slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous, described carrier synchronization signal for subsequent use is for what send after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous.
The third aspect, the embodiment of the invention provide a kind of slave, and this slave comprises:
Receiver, be used for receiving the main carrier synchronizing signal that the first main frame sends according to predetermined period, and reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
Processor, be used for receiving according to described receiver described main carrier synchronizing signal adjustment self carrier signal of described the first main frame, if and in described predetermined period, do not receive described main carrier synchronizing signal from described the first main frame, then be used for adjusting self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
In the possible implementation of the first, in conjunction with the third aspect, described slave also comprises:
Buffer is used for the described carrier synchronization signal for subsequent use of buffer memory.
In the possible implementation of the second, in conjunction with the third aspect or the possible implementation of the first, described preparation implement body is used for, the described main carrier synchronizing signal that receives described the first main frame according to described receiver is adjusted self carrier signal, if and in described predetermined period, do not receive described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to the carrier synchronization signal described for subsequent use of buffer memory, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
In the third possible implementation, in conjunction with the third aspect or possible implementation or the possible implementation of the second of the first, described slave also comprises:
The first transmitter is used for the Broadcast Fault signal, so that each slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
Fourth aspect, the embodiment of the invention also provide a kind of main frame, and this main frame comprises:
The second transmitter, be used for sending carrier synchronization signal for subsequent use to slave, if so that described slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then described slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous, described carrier synchronization signal for subsequent use is for what send after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous.
The 5th aspect, the embodiment of the invention also provide a kind of carrier synchronization system, and this system comprises the first main frame, the second main frame and slave, wherein:
Described the first main frame is used for sending the main carrier synchronizing signal according to predetermined period to described the second main frame and slave, makes self carrier signal of described the second main frame and slave and described main carrier synchronizing signal synchronous;
Described the second main frame, be used for sending carrier synchronization signal for subsequent use to described slave, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
Described slave, be used for receiving the main carrier synchronizing signal that the first main frame sends according to predetermined period, and according to described main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and described main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous, and, if in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
The method of the carrier synchronization that the embodiment of the invention provides, Apparatus and system, the main carrier synchronizing signal that sends according to predetermined period by receiving the first main frame, and according to main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if in predetermined period, do not receive the main carrier synchronizing signal from the first main frame, then adjust self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, owing to use simultaneously two main frames to send main carrier synchronizing signal and carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The carrier synchronization method schematic flow sheet one that Fig. 1 provides for the embodiment of the invention;
The carrier synchronization method schematic flow sheet two that Fig. 2 provides for the embodiment of the invention;
The carrier synchronization method schematic flow sheet three that Fig. 3 provides for the embodiment of the invention;
The slave structural representation one that Fig. 4 provides for the embodiment of the invention;
The slave structural representation two that Fig. 5 provides for the embodiment of the invention;
The slave structural representation three that Fig. 6 provides for the embodiment of the invention;
The main machine structure schematic diagram that Fig. 7 provides for the embodiment of the invention;
The carrier synchronization system configuration schematic diagram that Fig. 8 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the invention provides a kind of carrier synchronization method, and as shown in Figure 1, the method comprises:
S101, slave receive the main carrier synchronizing signal that sends according to predetermined period from the first main frame, and adjust self carrier signal according to the main carrier synchronizing signal, so that self carrier signal and main carrier synchronizing signal are synchronous.
Wherein, refer to synchronously the carrier signal of slave self and the same frequently homophase of the main carrier synchronizing signal that the first main frame sends.
In the inverter power module parallel operation, in order to control high frequency circulation to the impact that Circuits System produces, often adopt carrier synchronization method that it is controlled.Wherein, inverter refers to direct current energy is converted to the device of AC energy; High frequency circulation is the high-frequency current that circulates according to certain orientation, certain path that produces between the parallel operation module, and high frequency circulation can exert an influence to the normal operation of circuit.Slave at first can receive the main carrier synchronizing signal that is sent according to predetermined period by the first main frame, calculate afterwards the phase difference of main carrier synchronizing signal and self carrier signal according to the main carrier synchronizing signal, adjust self carrier cycle, remedy phase difference, to reach carrier synchronization.
S102, slave receive the carrier synchronization signal for subsequent use from the second main frame, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
After adjusting self carrier cycle and reaching effect with the first main frame carrier synchronization, receive carrier synchronization signal for subsequent use from the second main frame from chance, slave can be with carrier signal buffer memory for subsequent use after receiving carrier signal for subsequent use, until the new carrier synchronization signal for subsequent use that sends according to predetermined period covers it, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
The first main frame can be the Centralized Controller that can't realize management function, the first main frame sends main carrier synchronizing signal to the second main frame and slave, the second main frame and slave then can be the parallel operation module of inverter power module when carrying out parallel operation, can realize management function.The second main frame sends carrier synchronization signal to the first main frame for subsequent use and slave, and wherein, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.The main carrier synchronizing signal that the first main frame sends is caught by the different port of slave by different physical circuits with the carrier synchronization signal for subsequent use that the second main frame sends, thereby identifies.
If S103 does not receive the main carrier synchronizing signal from the first main frame in predetermined period, slave is then adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.
When Single Point of Faliure appears in carrier synchronization, for example, the first main frame is because fault or program fleet can't send the main carrier synchronizing signal, perhaps, when slave can't receive the main carrier synchronizing signal because receiving lines fault or external lug get loose, slave all can't receive the main carrier synchronizing signal that the first main frame sends, that is to say, if slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, slave then can arrive carrier signal for subsequent use by automatic switching line, and then according to carrier synchronization signal adjustment for subsequent use self carrier signal, so that self carrier signal after adjusting is synchronous with carrier synchronization signal for subsequent use, it is unaffected that system is moved.Wherein, program fleet refers to that system is interfered and makes program counter depart from given unique variation course, thereby causes the program operation to depart from normal operating path.
A kind of carrier synchronization method that the embodiment of the invention provides, as shown in Figure 2, the method comprises:
S201, the second main frame send carrier synchronization signal for subsequent use to slave, if so that slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous, carrier synchronization signal for subsequent use is for what send after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
When carrying out carrier synchronization, the second main frame at first can receive the main carrier synchronizing signal that the first main frame sends according to predetermined period, and calculate the phase difference of main carrier synchronizing signal and self carrier signal according to the main carrier synchronizing signal, adjust self carrier cycle, remedy phase difference, carrier synchronization signal for subsequent use after will adjusting subsequently sends to slave, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
If slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, for example the first main frame is because fault or program fleet can't send the main carrier synchronizing signal, and slave be can't receive the main carrier synchronizing signal because receiving circuit fault or external lug get loose the time, and slave can be controlled DSP (Digita; Signal Processing, Digital Signal Processing) the processor automatic switching line is to the carrier signal for subsequent use that the second main frame sends, and it is unaffected that system is moved.
A kind of carrier synchronization method that the embodiment of the invention provides, the main carrier synchronizing signal that sends according to predetermined period by receiving the first main frame, and according to main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if in predetermined period, do not receive the main carrier synchronizing signal from the first main frame, then adjust self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, because the second main frame sends carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
A kind of carrier synchronization method that the embodiment of the invention provides, as shown in Figure 3, the method comprises:
S301, the first main frame send main carrier synchronizing signal to the second main frame and slave according to predetermined period.
In the inverter power module parallel operation, in order to control high frequency circulation to the impact that Circuits System produces, often adopt carrier synchronization method that it is controlled.The second main frame and slave at first can receive the main carrier synchronizing signal that is sent according to predetermined period by the first main frame, calculate afterwards the phase difference of main carrier synchronizing signal and self carrier signal according to the main carrier synchronizing signal, adjust self carrier cycle, remedy phase difference, thereby reach the effect of carrier synchronization.
S302, the second main frame adjust self carrier signal according to the main carrier synchronizing signal from the first main frame, so that self carrier signal and main carrier synchronizing signal are synchronous.
S303, the second main frame send carrier synchronization signal for subsequent use to the first main frame and slave, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
S304, slave buffer memory carrier synchronization signal for subsequent use.
How integrating step S302, S303 and S304 send carrier synchronization signal for subsequent use to the second main frame, and how slave is processed received carrier synchronization signal for subsequent use describe.
The second main frame is after the main carrier synchronizing signal that receives from the first main frame, and the second slave is adjusted self carrier cycle, and issues carrier synchronization signal for subsequent use to slave, and wherein, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.And then slave then can receive the carrier synchronization signal for subsequent use that sends from the second main frame, and slave can carry out buffer memory with the carrier signal for subsequent use that receives, until the new carrier synchronization signal for subsequent use that sends according to predetermined period covers it.
If S305 the second main frame and slave in predetermined period do not receive the main carrier synchronizing signal from the first main frame, then slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.
S306, slave Broadcast Fault signal, so that each slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.
Integrating step S305 and S306 Single Point of Faliure occurs to the inverter power module combining system, and how the parallel operation module is processed describes.
Prior art is when carrying out carrier synchronization, inverter parallel operation module is divided into main frame and slave, send the main carrier synchronizing signal by main frame, all the other slaves are adjusted self carrier signal according to the main carrier synchronizing signal, so that self carrier signal and main carrier synchronizing signal are synchronous.When Single Point of Faliure appearred in system, slave adopted the mode of free competition bus to reaffirm main frame.
When Single Point of Faliure appears in system, when for example the carrier synchronization slave occurs receiving signal or appearance and aerial lug and gets loose fault, slave adopts the mode of free competition bus to reaffirm main frame, the signal that sends when constituting competition exerts an influence to other main frame synchronizing signals, thereby can't be synchronous with other modules.
The carrier synchronization method that the embodiment of the invention provides, send the main carrier synchronizing signal at the first main frame to the second main frame and slave, so that the second main frame and slave are adjusted self carrier signal according to the main carrier synchronizing signal, the carrier signal of the second main frame and slave with the synchronous basis of main carrier synchronizing signal on, after the second main frame receives the main carrier synchronizing signal carrier synchronization of the first main frame according to the predetermined period transmission, can send carrier synchronization signal for subsequent use to the first main frame and slave, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
When Single Point of Faliure occurring, when for example the carrier synchronization slave occurs receiving signal, slave can carry out synchronously according to the backup carrier synchronization signal that receives automatically, and Broadcast Fault signal, so that each slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous
A kind of carrier synchronization method that the embodiment of the invention provides, comprise that the first main frame sends the main carrier synchronizing signal according to predetermined period, so that the second main frame and slave are adjusted self carrier signal according to the main carrier synchronizing signal, so that the carrier signal of the second main frame and slave and main carrier synchronizing signal are synchronous, and second main frame after receiving the main carrier synchronizing signal carrier synchronization that the first main frame sends according to predetermined period, send carrier synchronization signal for subsequent use to the first main frame and slave, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if the second main frame and slave do not receive the main carrier synchronizing signal from the first main frame in predetermined period, then the second main frame and slave are adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, owing to use simultaneously two main frames to send main carrier synchronizing signal and carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
A kind of slave 1 that the embodiment of the invention provides, corresponding such scheme embodiment, each functional unit of slave 1 all can be used for the said method step.As shown in Figure 4, comprising:
Further, as shown in Figure 5, slave 1 also comprises:
Further, processor 11 specifically is used for, the main carrier synchronizing signal that receives the first main frame according to receiver 10 is adjusted self carrier signal, if and in predetermined period, do not receive main carrier synchronizing signal from the first main frame, then adjust self carrier signal according to the carrier synchronization signal for subsequent use of buffer memory, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.
Further, as shown in Figure 6, slave 1 also comprises:
The first transmitter 13 is used for the Broadcast Fault signal, so that each slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.
A kind of slave that the embodiment of the invention provides, the main carrier synchronizing signal that sends according to predetermined period by receiving the first main frame, and according to main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if in predetermined period, do not receive the main carrier synchronizing signal from the first main frame, then adjust self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, owing to use simultaneously two main frames to send main carrier synchronizing signal and carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
A kind of main frame 2 that the embodiment of the invention provides, corresponding such scheme embodiment, each functional unit of main frame 2 all can be used for the said method step.As shown in Figure 7, comprising:
The second transmitter 20, be used for sending carrier synchronization signal for subsequent use to slave, if so that slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then slave is adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous, carrier synchronization signal for subsequent use is for what send after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
A kind of slave that the embodiment of the invention provides, the main carrier synchronizing signal that sends according to predetermined period by receiving the first main frame, and according to main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, carrier synchronization signal for subsequent use is that the second main frame sends after receiving the main carrier synchronizing signal of the first main frame according to the predetermined period transmission, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if in predetermined period, do not receive the main carrier synchronizing signal from the first main frame, then adjust self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, because the second main frame sends carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
The embodiment of the invention also provides a kind of carrier synchronization system, and as shown in Figure 8, this system comprises:
The first main frame 3, the second main frame 2 and slave 1, wherein:
The first main frame 3 is used for sending the main carrier synchronizing signal according to predetermined period to the second main frame 2 and slave 1, makes self carrier signal of the second main frame 2 and slave 1 and main carrier synchronizing signal synchronous.
The second main frame 2, be used for sending carrier synchronization signal for subsequent use to slave 1, carrier synchronization signal for subsequent use is that the second main frame 2 sends after receiving the main carrier synchronizing signal of the first main frame 3 according to the predetermined period transmission, and carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
Exemplary, when this system only comprises first main frame and second main frame, the first main frame sends the main carrier synchronizing signal to the second main frame, after the second main frame receives the main carrier synchronizing signal of the first main frame transmission, send carrier synchronization signal for subsequent use to the first main frame, wherein carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous;
When this system comprises first main frame and a plurality of the second main frame, the first main frame sends the main carrier synchronizing signal to a plurality of the second main frames, after a plurality of the second main frames receive the main carrier synchronizing signal of the first main frame transmission, send carrier synchronization signal for subsequent use to the first main frame by different physical circuits respectively, wherein carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous;
When this system comprises first main frame, second main frame, slave, the first main frame sends the main carrier synchronizing signal to the second main frame and slave, after the second main frame receives the main carrier synchronizing signal of the first main frame transmission, send carrier synchronization signal for subsequent use to the first main frame and slave, slave is buffered in received carrier synchronization signal for subsequent use in self module, and wherein carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous;
When this system comprises first main frame, a plurality of the second main frame, slave, the first main frame sends the main carrier synchronizing signal to a plurality of the second main frames and slave, after a plurality of the second main frames receive the main carrier synchronizing signal of the first main frame transmission, send carrier synchronization signal for subsequent use to the first main frame and slave by different physical circuits respectively, slave will be buffered in respectively by the carrier synchronization signal a plurality of for subsequent use that different port receives in self module, and wherein carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous.
This system is except being applied to the inverter power module parallel operation, also can be applicable to UPS (Uninterruptible Power System, uninterrupted power supply) etc. in the various HF switch power models that need the module parallel connection, wherein, UPS is a kind of uninterrupted power supply that contains the constant voltage constant frequency of energy storage device, when normal Alternating Current Power Supply interrupts, the direct current of storage battery output can be become the power-supply device of the continued power of interchange, the HF switch power model refers to power module.
A kind of carrier synchronization system that the embodiment of the invention provides, the first main frame sends the main carrier synchronizing signal according to predetermined period, so that the second main frame and slave are adjusted self carrier signal according to the main carrier synchronizing signal, so that the carrier signal of the second main frame and slave and main carrier synchronizing signal are synchronous, and second main frame after receiving the main carrier synchronizing signal carrier synchronization that the first main frame sends according to predetermined period, send carrier synchronization signal for subsequent use to the first main frame and slave, carrier synchronization signal for subsequent use and main carrier synchronizing signal are synchronous, if the second main frame and slave do not receive the main carrier synchronizing signal from the first main frame in predetermined period, then the second main frame and slave are adjusted self carrier signal according to carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and carrier synchronization signal for subsequent use are synchronous.By this scheme, owing to use simultaneously two main frames to send main carrier synchronizing signal and carrier synchronization signal for subsequent use to slave, can adjust self carrier signal according to carrier signal for subsequent use if make the slave that in predetermined period, does not receive from the main carrier synchronizing signal of the first main frame, therefore the problem that carrier wave can't be synchronous in the time of can solving Single Point of Faliure, the seamless switching of carrier synchronization signal when realizing fault, and then improved Systems balanth and reliability.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (11)
1. carrier synchronization method, comprise receiving the main carrier synchronizing signal that the first main frame sends according to predetermined period, and adjust self carrier signal according to described main carrier synchronizing signal, so that self carrier signal and described main carrier synchronizing signal are synchronous, it is characterized in that described method also comprises:
Reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
If in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
2. carrier synchronization method according to claim 1 is characterized in that, behind the carrier synchronization signal for subsequent use of described reception from the second main frame, described method also comprises:
The described carrier synchronization signal for subsequent use of buffer memory.
3. carrier synchronization method according to claim 1 and 2, it is characterized in that, if the described described main carrier synchronizing signal that in described predetermined period, does not receive from described the first main frame, then adjust self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous, comprising:
If in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to the carrier synchronization signal described for subsequent use of buffer memory, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
4. the described carrier synchronization method of any one according to claim 1-3, it is characterized in that, if the described described main carrier synchronizing signal that in described predetermined period, does not receive from described the first main frame, then according to after described carrier synchronization signal adjustment for subsequent use self carrier signal, described method also comprises:
The Broadcast Fault signal, so that each slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
5. a carrier synchronization method is characterized in that, comprising:
Send carrier synchronization signal for subsequent use to slave, if so that described slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then described slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous, described carrier synchronization signal for subsequent use is for what send after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous.
6. a slave is characterized in that, comprising:
Receiver, be used for receiving the main carrier synchronizing signal that the first main frame sends according to predetermined period, and reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
Processor, be used for receiving according to described receiver described main carrier synchronizing signal adjustment self carrier signal of described the first main frame, if and in described predetermined period, do not receive described main carrier synchronizing signal from described the first main frame, then be used for adjusting self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
7. slave according to claim 6 is characterized in that, also comprises:
Buffer is used for the described carrier synchronization signal for subsequent use of buffer memory.
8. according to claim 6 or 7 described slaves, it is characterized in that, described preparation implement body is used for, the described main carrier synchronizing signal that receives described the first main frame according to described receiver is adjusted self carrier signal, if and in described predetermined period, do not receive described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to the carrier synchronization signal described for subsequent use of buffer memory, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
9. the described slave of any one according to claim 6-8 also comprises:
The first transmitter is used for the Broadcast Fault signal, so that each slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, and then so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
10. a main frame is characterized in that, comprising:
The second transmitter, be used for sending carrier synchronization signal for subsequent use to slave, if so that described slave does not receive the main carrier synchronizing signal from the first main frame in predetermined period, then described slave is adjusted self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous, described carrier synchronization signal for subsequent use is for what send after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous.
11. a carrier synchronization system is characterized in that, described system comprises: the first main frame, the second main frame and slave, wherein:
Described the first main frame is used for sending the main carrier synchronizing signal according to predetermined period to described the second main frame and slave, makes self carrier signal of described the second main frame and slave and described main carrier synchronizing signal synchronous;
Described the second main frame, be used for sending carrier synchronization signal for subsequent use to described slave, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, and described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous;
Described slave, be used for receiving the main carrier synchronizing signal that the first main frame sends according to predetermined period, and according to described main carrier synchronizing signal adjustment self carrier signal, so that self carrier signal and described main carrier synchronizing signal are synchronous, and reception is from the carrier synchronization signal for subsequent use of the second main frame, described carrier synchronization signal for subsequent use is that described the second main frame sends after receiving the described main carrier synchronizing signal of described the first main frame according to described predetermined period transmission, described carrier synchronization signal for subsequent use and described main carrier synchronizing signal are synchronous, and, if in described predetermined period, do not receive the described main carrier synchronizing signal from described the first main frame, then adjust self carrier signal according to described carrier synchronization signal for subsequent use, so that self carrier signal after adjusting and described carrier synchronization signal for subsequent use are synchronous.
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