CN101409465A - Clock lossless switching device applying for power supply - Google Patents
Clock lossless switching device applying for power supply Download PDFInfo
- Publication number
- CN101409465A CN101409465A CNA2008101605078A CN200810160507A CN101409465A CN 101409465 A CN101409465 A CN 101409465A CN A2008101605078 A CNA2008101605078 A CN A2008101605078A CN 200810160507 A CN200810160507 A CN 200810160507A CN 101409465 A CN101409465 A CN 101409465A
- Authority
- CN
- China
- Prior art keywords
- clock
- switching device
- circuit
- lossless switching
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to the technical field of communication, in particular to a clock lossless switching device for supplying power. The clock lossless switching device comprises two phase measurement modules, a timing module, a clock adjustment control circuit, a reference clock circuit and a clock frequency dividing circuit. The clock lossless switching device is characterized in that: the timing module is respectively connected with the two phase measurement modules; the clock adjustment control circuit is connected with the timing module; the reference clock circuit is connected with the clock adjustment control circuit; and the clock frequency dividing circuit is connected with the reference clock circuit. The clock lossless switching device eliminates the jitter of a clock signal generated while two paths of clock signals are switched and the influences on the signal time precision in the traditional devices, thus greatly improving the security, reliability and stability of the device.
Description
Technical field
The present invention relates to communication technical field, is a kind of clock lossless switching device that is applied to power specifically.
Background technology:
Along with the progressively raising of power clock synchro system to the requirement of fail safe, reliability, the clock synchronization apparatus in the system more and more trends towards adopting 2 the road or multichannel reference clock input.At present the transformer stations in the existing many areas of China have adopted the Big Dipper, the GPS dual-satellite system timing reference input input reference data as clock synchronization apparatus.How to ensure that two-way clock source still guarantees the precision and the quality of the time synchronizing signal of clock synchronization apparatus output when switching, be one and highlighted and urgent problem.
Summary of the invention:
In order to overcome the defective of prior art, the present invention proposes a kind of clock lossless switching device, significantly improves fail safe, the reliability and stability of power clock synchro system.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of clock lossless switching device that is applied to power, comprise phase measurement module, phase measurement module, time block, clock adjustment control circuit, reference clock circuit, clock division circuits, it is characterized in that time block is connected with two phase measurement modules respectively, clock is adjusted control circuit and is connected with time block, the reference clock circuit is adjusted control circuit with clock and is connected, and clock division circuits is connected with the reference clock circuit.
The shake of the clock signal that the present invention has produced when having eliminated two-way clock switching in the conventional apparatus reaches the influence to the signal time precision, has improved fail safe, the reliability and stability of device greatly.
Description of drawings:
Accompanying drawing is a structured flowchart of the present invention
Mark among the figure: phase measurement module 1, phase measurement module 2, time block 3, clock are adjusted control circuit 4, reference clock circuit 5, clock division circuits 6.
Embodiment:
Below in conjunction with accompanying drawing the present invention is described further:
As shown in the figure: a kind of clock lossless switching device that is applied to power, comprise phase measurement module 1, phase measurement module 2, time block 3, clock adjustment control circuit 4, reference clock circuit 5, clock division circuits 6, it is characterized in that time block is connected with two phase measurement modules respectively, clock is adjusted control circuit and is connected with time block, the reference clock circuit is adjusted control circuit with clock and is connected, and clock division circuits is connected with the reference clock circuit.
During use, the two-way clock signal is at first carried out quality testing and selection through phase measurement module 1 and phase measurement module 2, and carry out computing and processing by 3 pairs of Measurement Phase values of time block, and the compensation of the phase value when switching, and adjustment reference clock frequency, the shake of the clock signal that the present invention has produced when having eliminated two-way clock switching in the conventional apparatus reaches the influence to the signal time precision, has improved fail safe, the reliability and stability of device greatly.
Claims (1)
1, a kind of clock lossless switching device that is applied to power, comprise phase measurement module, phase measurement module, time block, clock adjustment control circuit, reference clock circuit, clock division circuits, it is characterized in that time block is connected with two phase measurement modules respectively, clock is adjusted control circuit and is connected with time block, the reference clock circuit is adjusted control circuit with clock and is connected, and clock division circuits is connected with the reference clock circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101605078A CN101409465A (en) | 2008-11-19 | 2008-11-19 | Clock lossless switching device applying for power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101605078A CN101409465A (en) | 2008-11-19 | 2008-11-19 | Clock lossless switching device applying for power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101409465A true CN101409465A (en) | 2009-04-15 |
Family
ID=40572320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101605078A Pending CN101409465A (en) | 2008-11-19 | 2008-11-19 | Clock lossless switching device applying for power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101409465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937190A (en) * | 2010-07-09 | 2011-01-05 | 上海申贝科技发展有限公司 | Modularized multisource input seamless switching method for satellite synchronous clock device |
-
2008
- 2008-11-19 CN CNA2008101605078A patent/CN101409465A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937190A (en) * | 2010-07-09 | 2011-01-05 | 上海申贝科技发展有限公司 | Modularized multisource input seamless switching method for satellite synchronous clock device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9355054B2 (en) | Digital calibration-based skew cancellation for long-reach MIPI D-PHY serial links | |
| CN201532575U (en) | Timing system of distributive industrial monitoring apparatus | |
| EP2824657B1 (en) | Point to multi-point clock-forwarded signaling for large displays | |
| WO2011008356A3 (en) | Techniques for adjusting clock signals to compensate for noise | |
| CN101257343B (en) | Data synchronization method for antenna to calibrate radio frequency far-end unit terminal | |
| JP2011527014A (en) | Tracking circuit and method for automatic test equipment system | |
| CN103454911A (en) | Rough synchronization method for satellite bidirectional time comparison | |
| WO2007143650A3 (en) | Method and apparatus for reducing oscillation in synchronous circuits | |
| CN102830611B (en) | Time source | |
| CN104678754A (en) | Full-function type time synchronization system | |
| CN104935329A (en) | Multi-channel reference source soft switching method and system of time synchronizer | |
| CN107104670A (en) | Many board synchronous collection methods of base when triggering PLL based on pulse | |
| CN103595522B (en) | A kind of Dual-channel digital analog converter synchronization method | |
| CN104683057B (en) | A kind of method and system of the time synchronization of more instrument cubicles | |
| CN101752901B (en) | Method, system, equipment and device for synchronizing data sampling at different places | |
| TW200620835A (en) | Clock and data recovery apparatus and method thereof | |
| CN101409465A (en) | Clock lossless switching device applying for power supply | |
| CN204180093U (en) | A kind of PPS system balance device based on FPGA | |
| CN201293925Y (en) | Clock lossless switching device applying for power supply | |
| TW200510987A (en) | Method and related apparatus for outputting clock through data path | |
| CN103763089A (en) | Device and method for sending IO modulating signals synchronously by multi-core high-speed DAC | |
| CN203745826U (en) | Multifunctional signal generator | |
| CN203038018U (en) | Time synchronization system | |
| CN105116802A (en) | An apparatus and method for generating deterministic clock jittering | |
| CN112769536B (en) | Multichannel digital signal synchronization method and system based on bit error rate detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090415 |