CN102540962B - Intelligent multi-time source automatic optimizing and negotiating timing time synchronous system and timing method - Google Patents
Intelligent multi-time source automatic optimizing and negotiating timing time synchronous system and timing method Download PDFInfo
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- CN102540962B CN102540962B CN 201210008138 CN201210008138A CN102540962B CN 102540962 B CN102540962 B CN 102540962B CN 201210008138 CN201210008138 CN 201210008138 CN 201210008138 A CN201210008138 A CN 201210008138A CN 102540962 B CN102540962 B CN 102540962B
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Abstract
The invention relates to a multi-time source automatic optimizing and negotiating timing time synchronous system and a timing method and belongs to the technical field of the time synchronous system and primary-secondary clock system. The timing time synchronous system comprises a plurality of time source modules, wherein the time source modules are in communication connection with a central control CPU (Central Processing Unit) and a clock rear panel interface through a bus; each of the time source modules comprises a time source card, a programmable logic device and a time source CPU; and the time source CPU is in communication connection with the central control CPU5. The timing method comprises the following steps: 1) measuring the precision of the time source card by each programmable logic device; 2) utilizing the central control CPU to select the optimal time source for timing; 3) arraying the remained time source modules according to the precision; and 4) detecting the output of each of the time source modules through suboptimal time source modules, and carrying out timing by switching the time source of the suboptimal time source modules to the central control CPU when the timing system is in fault. The backup scheme of high-speed programmable logic devices and multiple time sources is adopted in the invention; the time source with the best signal quality is automatically selected for timing the system; and the effective measuring mode, the intelligent preferential selection and the intelligent switching between the time sources are realized.
Description
Technical field
The present invention relates to a kind of intelligence source Automatic Optimal, negotiation time service clock synchronization system and time service method for a long time, belong to clock synchronization system, princip al and subordinate clock system technical field.
Background technology
In the present time service product, the source when mode that substantially all provides 1+1 backup backs up, and the time switch that to exist mutual detecting reaction slower between the source, in the time of two between the source signal quality lack effective measurement mechanism, switch slowly, can have " burr " phenomenon, the wrong second phenomenon of handoff procedure in the handoff procedure.This is for the higher place of time precision, and the influence that brings is very large.
Summary of the invention
The objective of the invention is to solve the weak point that above-mentioned prior art exists, a kind of state detecting of source card can realize each fast the time is provided, and intelligence relatively each the time source signal quality, select for use automatically signal quality best to the intelligence of system's time service for a long time the source Automatic Optimal, consult time service clock synchronization system and time service method.
The present invention is achieved through the following technical solutions:
Intelligence is source Automatic Optimal, negotiation time service clock synchronization system for a long time, its special character is to comprise a plurality of time source modules 1, time source module 1 is connected with middle control CPU5,3 communications of clock backplane interface by bus, source card 6 when time source module 1 comprises, be used for to the time source card 6 control and the programmable logic device of detecting 2 and the time source CPU4 that is connected with programmable logic device 2 communications, the time source CPU4 be connected with middle control CPU5 communication.
Above-mentioned intelligence is the time service method of source Automatic Optimal, negotiation time service clock synchronization system for a long time, and its special character is may further comprise the steps:
1, each programmable logic device 2 usefulness self time measurement be connected with its communication the time source card 6 precision, and source CPU4 when reporting to separately gathers to middle control CPU5;
2, middle control CPU5 compares each master clock module 1, and the state that reports according to each master clock and precision are selected optimum master clock and carried out time service;
3, middle control CPU5 with excess time source module 1 time source carry out priority queueing according to precision;
4, detect the output of each time source modules 1 by time source CPU4 and the programmable logic controller (PLC) 2 of time top grade time source module 1, when the time service fault appearred in system, control CPU5 carried out time service during the time source of inferior top grade time source module 1 switched to.
Burr in the handoff procedure, described in control CPU5 can be to each the time time source state of source card 6 carry out investigations, handoff procedure is controlled by programmable logic device 2, carries out change action after being chosen in the pulse per second (PPS) negative edge.
Intelligence of the present invention is source Automatic Optimal, negotiation time service clock synchronization system and time service method for a long time, adopt programmable logic device (PLD) at a high speed to reach the backup scenario in source for a long time, the state detecting of source card when realizing each fast, and intelligence relatively each the time source signal quality, automatically select for use signal quality best to system's time service, stability and the reliability of the operation of maximum raising system, when multichannel among the source, one the tunnel can operate as normal as long as have, then total system still can be guaranteed normal operation.Effective measurement mechanism when having realized between the source, intelligence are selected the superior, intelligence is switched, and have avoided occurring in the handoff procedure problem of burr.
Description of drawings
Fig. 1: intelligence of the present invention is the structural representation of source Automatic Optimal, negotiation time service clock synchronization system for a long time;
Fig. 2: the structural representation of time source module 1.
Embodiment
Provide the specific embodiment of the present invention below with reference to accompanying drawing, be used for that the present invention is described further.
Intelligence is source Automatic Optimal, negotiation time service clock synchronization system for a long time, comprise a plurality of time source modules 1, time source module 1 is connected with middle control CPU5,3 communications of clock backplane interface by bus, source card 6 when time source module 1 comprises, be used for to the time source card 6 control and the programmable logic device of detecting 2 and the time source CPU4 that is connected with programmable logic device 2 communications, the time source CPU4 be connected with middle control CPU5 communication.
Above-mentioned intelligence is the time service method of source Automatic Optimal, negotiation time service clock synchronization system for a long time, may further comprise the steps:
1, each programmable logic device 2 usefulness self time measurement be connected with its communication the time source card 6 precision, and source CPU4 when reporting to separately gathers to middle control CPU5;
2, middle control CPU5 compares each master clock module 1, and the state that reports according to each master clock and precision are selected optimum master clock and carried out time service;
3, middle control CPU5 with excess time source module 1 time source carry out priority queueing according to precision;
4, detect the output of each time sources by time source CPU4 and the programmable logic controller (PLC) 2 of time top grade time source module 1, when the time service fault appearred in system, control CPU5 carried out time service during the time source of inferior top grade time source module 1 switched to.
Burr in the handoff procedure, described in control CPU5 can be to each the time time source state of source card 6 carry out investigations, handoff procedure has programmable logic device 2 to control, and carries out change action after being chosen in the pulse per second (PPS) negative edge.
The useful technique effect that technical solution of the present invention can reach:
1, because native system adopts Source backups for a long time, can under complicated rugged environment, move, when wherein one the tunnel or after when record breaks down in the source, system still can automatically switch to other and source system be carried out time service when normal, sufficient redundant performance and handoff functionality efficiently improve stability, the reliability of system greatly.
2, the native system switching in source for a long time all is to carry out state detecting, judgement, switching at self middle control CPU, and its process need not artificial participation, improves the intellectuality of system greatly.
Switch in the source when 3, carrying out fast, handoff procedure can not cause mistake, can not produce wrong second, can not produce burr, with the time source handoff procedure control in the rank of nanosecond, can be because of switching situations such as system being caused delay, mistake, burr mistake second.
Claims (2)
- Intelligence for a long time the source Automatic Optimal, consult the time service method of time service clock synchronization system, described system comprises a plurality of time source modules (1), time source module (1) is by bus and middle control CPU(5), clock backplane interface (3) communication is connected, time source module (1) source card (6) when comprising, be used for to the time source card (6) control and the programmable logic device of detecting (2) and the time source CPU(4 that is connected with programmable logic device (2) communication), the time source CPU(4) with middle control CPU(5) communication is connected, it is characterized in that said method comprising the steps of:1), each programmable logic device (2) with self time measurement be connected with its communication the time source card (6) precision, and source CPU(4 when reporting to separately), gather to middle control CPU(5);2), middle control CPU(5) each time source module (1) is compared, the state that reports according to each time source and precision are selected the optimal time source and are carried out time service;3), middle control CPU(5) priority queueing is carried out according to precision in the time source of source module excess time (1);4), the time source CPU(4 by time top grade time source module (1)) and programmable logic device (2) detect the output of each time source module (1), when the time service fault appears in system, control CPU(5 during the time source of inferior top grade time source module (1) switched to) carries out time service.
- According to the described intelligence of claim 1 for a long time the source Automatic Optimal, consult the time service method of time service clock synchronization system, it is characterized in that described in control CPU(5) the time source state of source card (6) carries out investigations during to each, handoff procedure is controlled by programmable logic device (2), is chosen in the pulse per second (PPS) negative edge and carries out change action afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210008138 CN102540962B (en) | 2012-01-12 | 2012-01-12 | Intelligent multi-time source automatic optimizing and negotiating timing time synchronous system and timing method |
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| CN 201210008138 CN102540962B (en) | 2012-01-12 | 2012-01-12 | Intelligent multi-time source automatic optimizing and negotiating timing time synchronous system and timing method |
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| CN102540962A CN102540962A (en) | 2012-07-04 |
| CN102540962B true CN102540962B (en) | 2013-10-02 |
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| CN111427074B (en) * | 2020-06-10 | 2020-10-09 | 天津七一二通信广播股份有限公司 | GBAS-based high-reliability time system service equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179327A (en) * | 2007-12-11 | 2008-05-14 | 华为技术有限公司 | Control system and method of satellite synchronous receiving card |
| CN101231337A (en) * | 2008-02-15 | 2008-07-30 | 哈尔滨工程大学 | High-precision time synchronizing apparatus |
| CN101937189A (en) * | 2010-08-14 | 2011-01-05 | 孙得膑 | Wireless clock system based on wireless sensor |
| CN202443290U (en) * | 2012-01-12 | 2012-09-19 | 孙得膑 | Intelligent multi-time-source automatic optimization and negotiation timing time synchronization system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7212468B2 (en) * | 2002-12-19 | 2007-05-01 | The Sapling Company, Inc. | Master/slave clock system with automatic protocol detection and selection |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179327A (en) * | 2007-12-11 | 2008-05-14 | 华为技术有限公司 | Control system and method of satellite synchronous receiving card |
| CN101231337A (en) * | 2008-02-15 | 2008-07-30 | 哈尔滨工程大学 | High-precision time synchronizing apparatus |
| CN101937189A (en) * | 2010-08-14 | 2011-01-05 | 孙得膑 | Wireless clock system based on wireless sensor |
| CN202443290U (en) * | 2012-01-12 | 2012-09-19 | 孙得膑 | Intelligent multi-time-source automatic optimization and negotiation timing time synchronization system |
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Address after: 264670 Yantai Shandong high tech Zone College Park Applicant after: Sun Debin Address before: Zhifu District of Shandong city of Yantai Province Yu 264000 West Road, room 205 No. 17-6 Applicant before: Sun Debin |
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