CN102801467A - Device and method for implementing dual optical fiber protection switching based on ONU - Google Patents
Device and method for implementing dual optical fiber protection switching based on ONU Download PDFInfo
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- CN102801467A CN102801467A CN2012102952999A CN201210295299A CN102801467A CN 102801467 A CN102801467 A CN 102801467A CN 2012102952999 A CN2012102952999 A CN 2012102952999A CN 201210295299 A CN201210295299 A CN 201210295299A CN 102801467 A CN102801467 A CN 102801467A
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Abstract
The invention discloses a device and a method for implementing dual optical fiber protection switching based on an optical network unit (ONU), and relates to the technical field of optical fiber communication, in particular to the detection and switching technology for an optical fiber circuit. A single pon mac chip and two optical modules and complex programmable logic device (CPLD) modules are adopted; the pon mac chip is connected with the SD pins, RX-EN, datapath and I2C pins of the two optical modules; after the device is electrified, the SD pins of the two optical modules are inquired, an I2C register is read, and the fault state and received optical signal strength of the optical fiber circuit are determined; and if the main optical fiber circuit is in a fault or abnormal signal state, and the standby optical fiber circuit is normal, a communication signal is switched to the standby optical fiber circuit. By using the technology provided by the invention, the condition of the optical circuit can be detected comprehensively and quickly, and the optical circuit is switched timely so as to ensure the communication.
Description
Technical field
The present invention relates to technical field of optical fiber communication, particularly the detection of fibre circuit and switching technique.
Background technology
Current, the optical cable transmission network has become the major part of Communication in China net and national economy information infrastructure, is the basis of public switched telephone network, digital transport network and value-added network diverse network.The fiber optic cable communications network brings bigger economic loss in case blocking-up will cause very big influence to society to enterprise.Therefore, the protection of the quality of fiber cable network quality and circuit and recovery problem more and more cause people's attention.
Optical fibre protection inverting mainly contains three types: 1, key redundant optical fiber protection, and 2, OLT PON mouth, the protection of key redundant optical fiber, 3, full guard, comprise OLT PON mouth, key optical fiber, optical branching device, the protection of distribution redundant optical fiber.No matter the protection of which kind of type all need be judged fiber-optic signal.
At present, the basis for estimation that optical fiber is switched mainly contains two: one is that the SD pin information that reads optical module is judged losing of signal, is the degradation of judging signal according to the error rate of information in addition.Chinese patent " method of a kind of ONU and realization all-fiber protection switching thereof " (application number: 200910108540.0) disclosed above-mentioned two kinds of methods.
Losing of fiber-optic signal can in time detect, but the error rate detection of information needs the regular hour, can not in time reflect the situation of circuit.
Chinese patent " method that a kind of electric power EPON ONU of system apparatus optical fiber protection is switched " (application number: 201010544105.5) disclosed a kind of structure that adopts single EPONMAC and two EPON optical modules, but it surveys the SD output of optical module.
Optical module can produce the SD fault-signal at receiving optical signals less than-35dBm.In industry ,-27dBm is the critical point of received optical power, if be lower than this value, light path is easy to generate error code, unsettled abnormal conditions occur.The EPON of standard has two kinds of optical module: 1000BASE-PX10 and 1000BASE-PX20, and the reference optical power of ONU receiving terminal is respectively-1 ~-24dBm and-6 ~-27dBm (with reference to IEEE 802.3 the 60th chapter).-35dBm ~-27dBm (or-24dBm) low light level RST under, ONU can not operate as normal.Prior art is not under the circumstances.
Summary of the invention
The purpose of this invention is to provide a kind of light path situation that comprehensively, promptly detects, and, guarantee the technology of communication reliability according to the timely switching-over light path of testing result.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: a kind of device of realizing two optical fibre protection invertings based on ONU; Use a pon mac chip and two optical modules and CPLD module to realize; Two optical modules connect active and standby fibre circuit respectively; The port of pon mac chip is directly connected to the SD pin of two optical modules, and between the RX_EN of pon mac chip and two optical modules, connect through CPLD between the datapath pin of pon mac chip and two optical modules, key is: connect through CPLD between the I2C pin of pon mac chip and two optical modules.
Use the method for a kind of pair of optical fibre protection inverting of said apparatus; At first inquire about the SD pin of two optical modules, judge the malfunction of fibre circuit, if lit fiber line fault; Subsequent use fibre circuit is normal, and signal of communication is switched on the subsequent use fibre circuit; If circuit fault all two; ONU separates registration; Key is: read the I2C register of two optical modules, judge the signal strength signal intensity of fibre circuit, if the signal of lit fiber circuit is less than set point; The signal of subsequent use fibre circuit switches to signal of communication on the subsequent use fibre circuit greater than set point.
Optical module can produce the SD fault-signal at receiving optical signals less than-35dBm.In industry ,-27dBm is the critical point of received optical power, if be lower than this value, the optical link signal is abominable, produces error code, unsettled abnormal conditions occur.The EPON of standard has two kinds of optical module: 1000BASE-PX10 and 1000BASE-PX20, and the reference optical power of ONU receiving terminal is respectively-1 ~-24dBm and-6 ~-27dBm (with reference to IEEE 802.3 the 60th chapter).-35dBm ~-27dBm (or-24dBm) low light level RST under, ONU can not operate as normal.
The SD pin of optical module can provide the failure condition of fibre circuit, and the value in the I2C register is the signal strength signal intensity of fibre circuit, according to these two foundations, can judge the immediate status of fibre circuit, thereby the protection of accomplishing circuit is switched.
Pon 6301 writes the CPLD internal register through the localbus bus, constantly reads the register of active and standby optical module I2C, obtains the received optical power value of each module, when the received optical power of primary module is unusual, switches to subsequent use optical module.
Use apparatus and method provided by the invention, if the master breaks down with optical cable or interrupts, can in 50ms, be switched to business on the reserve cable with optical cable from the master who goes wrong, it is professional in the shortest time, to recover Optical Fiber Transmission.
Description of drawings
Fig. 1 is the circuit logic connection layout of two optical module SFF and 6301 pon,
Fig. 2 is a process chart of the present invention.
Embodiment
A kind of device of realizing two optical fibre protection invertings based on ONU; Use a pon mac chip and two optical modules and CPLD module to realize; Two optical modules connect active and standby fibre circuit respectively; The port of pon mac chip is directly connected to the SD pin of two optical modules; Between the RX_EN of pon mac chip and two optical modules, connect through CPLD between the datapath pin of pon mac chip and two optical modules, it is characterized in that: connect through CPLD between the I2C pin of pon mac chip and two optical modules.
In the preferred version, pon mac chip uses pon 6301.
The method of a kind of pair of optical fibre protection inverting uses above-mentioned protection changeover apparatus to realize, may further comprise the steps:
The SD pin of two optical modules of inquiry, the malfunction of judgement fibre circuit, if lit fiber line fault, subsequent use fibre circuit is normal, and signal of communication is switched on the subsequent use fibre circuit; If circuit fault all two, ONU separates registration,
Read the I2C register of two optical modules, judge the signal strength signal intensity of fibre circuit, if the signal of lit fiber circuit excessively a little less than, the signal of subsequent use fibre circuit is normal, and signal of communication is switched on the subsequent use fibre circuit.
If the signal strength signal intensity of lit fiber circuit is greater than-1dBm, the signal of subsequent use fibre circuit switches to signal of communication on the subsequent use fibre circuit less than-1dBm.
Below in conjunction with accompanying drawing the present invention is elaborated.
Referring to Fig. 1, pon mac chip pon 6301 is through data channel, I2C, the RX_EN pin of two optical module SFF1 of CPLD connection and SFF2, and the port pin of pon 6301 is directly linked the SD pin of two optical modules.
Two states of SD pin output of optical module, fault or normal is the real-time power value of receiving optical signals in the I2C register, through judging this two signals and numerical value, determines whether carrying out line switching.
Pon 6301 obtains optical module SD signal through GPIO pin inquiry mode; Write the CPLD internal register through the localbus bus; Constantly read the register of active and standby optical module I2C, through the reception ena-bung function of CPLD switches light module RX data channel and optical module.
Referring to Fig. 2, after the device power work, pon 6031 obtains SD signal and the I2C register value of SFF1 and SFF2, and both received optical powers carries out to judge according to the value that receives:
Fault judgement: according to the SD signal, if main fiber line fault, subsequent use fibre circuit is normal, and signal of communication is switched on the subsequent use fibre circuit; If circuit fault all two, ONU separates registration.
Signal strength signal intensity is judged: judge signal strength signal intensity, according to the type of optical module, if the signal of main fiber circuit less than-27dBm or-24dBm, then signal excessively a little less than, the signal of subsequent use fibre circuit is normal simultaneously, and signal of communication is switched on the subsequent use fibre circuit.
For protection equipment, overflow on main line, greater than-1dBm, the signal of subsequent use fibre circuit is normal simultaneously, and signal of communication is switched on the subsequent use fibre circuit.
Change action comprises that pon 6301 writes CPLD internal register mode through the localbus bus and switches the reception data link, RX_EN level, I2C_clk etc. are set.
When signal was switched to subsequent use fibre circuit, subsequent use fibre circuit just became the main fiber circuit that is using, and former main fiber circuit just becomes subsequent use fibre circuit.
More than judge and during equipment work, carry out always.
Claims (7)
1. device of realizing two optical fibre protection invertings based on ONU; Use a pon mac chip and two optical modules and CPLD module to realize; Two optical modules connect active and standby fibre circuit respectively; The port of pon mac chip is directly connected to the SD pin of two optical modules; Between the RX_EN of pon mac chip and two optical modules, connect through CPLD between the datapath pin of pon mac chip and two optical modules, it is characterized in that: connect through CPLD between the I2C pin of pon mac chip and two optical modules.
2. a kind of device of realizing two optical fibre protection invertings based on ONU according to claim 1, it is characterized in that: pon mac chip uses pon 6301.
3. the method for two optical fibre protection invertings; Use claim 1 or 2 described a kind of devices to realize based on the two optical fibre protection invertings of ONU realization; At first inquire about the SD pin of two optical modules, judge the malfunction of fibre circuit, if lit fiber line fault; Subsequent use fibre circuit is normal, and signal of communication is switched on the subsequent use fibre circuit; If circuit fault all two, ONU separates registration, it is characterized in that: further comprising the steps of:
Read the I2C register of two optical modules, judge the signal strength signal intensity of fibre circuit, if the signal of lit fiber circuit less than set point, the signal of subsequent use fibre circuit switches to signal of communication on the subsequent use fibre circuit greater than set point.
4. according to the method for the said a kind of pair of optical fibre protection inverting of claim 3, it is characterized in that: described set point is-27dBm.
5. according to the method for the said a kind of pair of optical fibre protection inverting of claim 3, it is characterized in that: described set point is-24dBm.
6. according to the method for the said a kind of pair of optical fibre protection inverting of claim 3, it is characterized in that: also carry out following steps:
If the signal strength signal intensity of lit fiber circuit is greater than-1dBm, the signal of subsequent use fibre circuit switches to signal of communication on the subsequent use fibre circuit less than-1dBm.
7. according to the method for the said a kind of pair of optical fibre protection inverting of claim 3, it is characterized in that: pon 6301 switches through localbus bus read-write CPLD register.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095501A (en) * | 2013-01-21 | 2013-05-08 | 南京南瑞集团公司 | Real-time monitoring method of optical network unit (ONP) operating state |
| CN104540046A (en) * | 2015-01-07 | 2015-04-22 | 上海市共进通信技术有限公司 | Method for achieving intelligent ONU double-light source adaptation based on optical network unit |
| CN104954065A (en) * | 2015-05-22 | 2015-09-30 | 上海斐讯数据通信技术有限公司 | Passive optical network system and communication method |
| CN106656313A (en) * | 2017-02-15 | 2017-05-10 | 广东九博科技股份有限公司 | Device for realizing optical interface protection switching and method thereof |
| CN106862760A (en) * | 2015-12-11 | 2017-06-20 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of transmission laser system of the light path that automatically switches |
| CN107294594A (en) * | 2017-07-03 | 2017-10-24 | 博为科技有限公司 | A kind of passive optical network equipment, switching method and system |
| CN107643989A (en) * | 2016-07-22 | 2018-01-30 | 北京中科信电子装备有限公司 | One kind is based on pci bus agreement dual fiber ring road redundancy structure Communication Card |
| CN108399137A (en) * | 2018-03-07 | 2018-08-14 | 广州芯德通信科技股份有限公司 | I2C switching method of the PON modules based on CPLD |
| CN108833000A (en) * | 2018-06-14 | 2018-11-16 | 烽火通信科技股份有限公司 | PON system pretection switch information transmitting methods and system |
| CN109547877A (en) * | 2019-01-29 | 2019-03-29 | 烽火通信科技股份有限公司 | A kind of optical communication path negater circuit and its application method |
| CN111896143A (en) * | 2020-08-31 | 2020-11-06 | 中冶赛迪工程技术股份有限公司 | Method and device for overhauling temperature measuring optical fiber of industrial kiln |
| CN113365033A (en) * | 2021-06-04 | 2021-09-07 | 深圳市朗强科技有限公司 | Standby optical module selection method and equipment supporting audio and video data transmission |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414878A (en) * | 2008-12-03 | 2009-04-22 | 烽火通信科技股份有限公司 | Method and apparatus for implementing trunk optical fiber rapid protection switching of EPON system |
| US20090269051A1 (en) * | 2006-09-07 | 2009-10-29 | Bin-Yeong Yoon | Method of controlling optical output power and passive optical network system using the same |
| CN101600128A (en) * | 2009-06-30 | 2009-12-09 | 中兴通讯股份有限公司 | The method of a kind of ONU and realization all-fiber protection switching thereof |
| CN101800599A (en) * | 2010-02-10 | 2010-08-11 | 瑞斯康达科技发展股份有限公司 | Optical fiber circuit-protecting equipment and system |
| CN101867392A (en) * | 2009-04-15 | 2010-10-20 | 中兴通讯股份有限公司 | Method, equipment and system for improving type B protection switching performance |
| CN101916959A (en) * | 2010-08-04 | 2010-12-15 | 成都优博创技术有限公司 | Laser switching-off device and switching-off method thereof |
| CN101982984A (en) * | 2010-11-12 | 2011-03-02 | 安徽省电力公司信息通信分公司 | Optical-fiber protection switching method of ONU equipment in electric EPON system |
| CN102122530A (en) * | 2011-01-20 | 2011-07-13 | 中兴通讯股份有限公司 | System and method for programming flash memory |
-
2012
- 2012-08-20 CN CN2012102952999A patent/CN102801467A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090269051A1 (en) * | 2006-09-07 | 2009-10-29 | Bin-Yeong Yoon | Method of controlling optical output power and passive optical network system using the same |
| CN101414878A (en) * | 2008-12-03 | 2009-04-22 | 烽火通信科技股份有限公司 | Method and apparatus for implementing trunk optical fiber rapid protection switching of EPON system |
| CN101867392A (en) * | 2009-04-15 | 2010-10-20 | 中兴通讯股份有限公司 | Method, equipment and system for improving type B protection switching performance |
| CN101600128A (en) * | 2009-06-30 | 2009-12-09 | 中兴通讯股份有限公司 | The method of a kind of ONU and realization all-fiber protection switching thereof |
| CN101800599A (en) * | 2010-02-10 | 2010-08-11 | 瑞斯康达科技发展股份有限公司 | Optical fiber circuit-protecting equipment and system |
| CN101916959A (en) * | 2010-08-04 | 2010-12-15 | 成都优博创技术有限公司 | Laser switching-off device and switching-off method thereof |
| CN101982984A (en) * | 2010-11-12 | 2011-03-02 | 安徽省电力公司信息通信分公司 | Optical-fiber protection switching method of ONU equipment in electric EPON system |
| CN102122530A (en) * | 2011-01-20 | 2011-07-13 | 中兴通讯股份有限公司 | System and method for programming flash memory |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095501B (en) * | 2013-01-21 | 2016-04-20 | 南京南瑞集团公司 | A kind of method of real-time of ONU equipment operation conditions |
| CN103095501A (en) * | 2013-01-21 | 2013-05-08 | 南京南瑞集团公司 | Real-time monitoring method of optical network unit (ONP) operating state |
| CN104540046A (en) * | 2015-01-07 | 2015-04-22 | 上海市共进通信技术有限公司 | Method for achieving intelligent ONU double-light source adaptation based on optical network unit |
| CN104954065B (en) * | 2015-05-22 | 2018-02-13 | 上海斐讯数据通信技术有限公司 | A kind of passive optical network and communication means |
| CN104954065A (en) * | 2015-05-22 | 2015-09-30 | 上海斐讯数据通信技术有限公司 | Passive optical network system and communication method |
| CN106862760A (en) * | 2015-12-11 | 2017-06-20 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of transmission laser system of the light path that automatically switches |
| CN107643989B (en) * | 2016-07-22 | 2022-05-10 | 北京中科信电子装备有限公司 | Dual-optical-fiber loop redundancy structure communication board card based on PCI bus protocol |
| CN107643989A (en) * | 2016-07-22 | 2018-01-30 | 北京中科信电子装备有限公司 | One kind is based on pci bus agreement dual fiber ring road redundancy structure Communication Card |
| CN106656313A (en) * | 2017-02-15 | 2017-05-10 | 广东九博科技股份有限公司 | Device for realizing optical interface protection switching and method thereof |
| CN107294594A (en) * | 2017-07-03 | 2017-10-24 | 博为科技有限公司 | A kind of passive optical network equipment, switching method and system |
| CN107294594B (en) * | 2017-07-03 | 2023-11-14 | 博为科技有限公司 | Passive optical network device, switching method and system |
| CN108399137A (en) * | 2018-03-07 | 2018-08-14 | 广州芯德通信科技股份有限公司 | I2C switching method of the PON modules based on CPLD |
| CN108833000A (en) * | 2018-06-14 | 2018-11-16 | 烽火通信科技股份有限公司 | PON system pretection switch information transmitting methods and system |
| CN108833000B (en) * | 2018-06-14 | 2020-04-28 | 烽火通信科技股份有限公司 | PON system protection switching information transmission method and system |
| CN109547877A (en) * | 2019-01-29 | 2019-03-29 | 烽火通信科技股份有限公司 | A kind of optical communication path negater circuit and its application method |
| CN109547877B (en) * | 2019-01-29 | 2022-03-01 | 烽火通信科技股份有限公司 | Optical communication channel switching circuit and use method thereof |
| CN111896143A (en) * | 2020-08-31 | 2020-11-06 | 中冶赛迪工程技术股份有限公司 | Method and device for overhauling temperature measuring optical fiber of industrial kiln |
| CN113365033A (en) * | 2021-06-04 | 2021-09-07 | 深圳市朗强科技有限公司 | Standby optical module selection method and equipment supporting audio and video data transmission |
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Application publication date: 20121128 |