CN101789827A - High-precision remote optical path switch method and system - Google Patents
High-precision remote optical path switch method and system Download PDFInfo
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- CN101789827A CN101789827A CN201010101788A CN201010101788A CN101789827A CN 101789827 A CN101789827 A CN 101789827A CN 201010101788 A CN201010101788 A CN 201010101788A CN 201010101788 A CN201010101788 A CN 201010101788A CN 101789827 A CN101789827 A CN 101789827A
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Abstract
The invention discloses a high-precision remote optical path switch scheme and a system, belonging to the technical filed of optical networking communication. An on-line monitoring and switching unit exchanges information with a remote console by Ethernet or a GPRS mode, a main optical-fibre circuit and an auxiliary optical-fibre circuit are utilized to transmit optical signals, and optical signal power is monitored and compared with a set switching threshold to determine whether the optical path switching is gated; the system comprises the on-line monitoring and switching unit, a communication control unit and the like; the on-line monitoring and switching unit is composed of an optical splitter, a photodiode, a logarithm amplifier, an A/D converter, an optical switch and a control chip; and by introducing the logarithm amplifier, the accuracy of the optical power acquisition value of the traditional fibre is effectively improved, and the problem that the precision is difficult to be accurately measured due to larger attenuate generated after long distance transmission of an optical fibre trunk network is improved, thereby ensuring more accurate and reliable optical path switch in traditional optical path protection. In addition, after the communication control unit is introduced, remote centralized management on an optical path protection module is realized.
Description
Affiliated technical field
The present invention relates to technical field of optical network communication, relate in particular to a kind of high-precision remote optical path switch method and system.
Background technology
Optical fiber is as big capacity information medium and extensive use, but its pliability difference and technology radius are little, and all factors cause its reliability not good.Current, many application 1: 1 and 1+1 optical protection mechanism in the optical transmission.The principle of two kinds of technical schemes is abundant relatively, but all has drawbacks such as incomplete.
1: 1 optical protection mechanism transmitting terminal of tradition and receiving terminal be the switches light switch simultaneously, with the same light path of gating, exist be difficult to wait synchronously not enough.The 1+1 optical protection mechanism sends light signal to main and auxiliary light path by 1: 1 splitting ratio at transmitting terminal, has the 3dB loss after receiving terminal is with the light switching gate.Because long-distance transmission back attenuated optical signal is very big, and only take signal about 3% when optical signal power measured, this makes, and traditional 1+1 optical protection mechanism switching threshold controlled range is little, light path gating sensitivity inadequately.Specifically be characterized by opto-electronic conversion after-current value and pacify to the milliampere level for receiving, employing conventional linear amplifier institute power scale value scope is little and precision is low.As " optical fiber and cable and application technology thereof " the 2nd phase in 2008, the 19-23 page or leaf, article name promptly belongs to these row for " a kind of novel intelligent light path protection system ".The patent No. is 200610109787.0, denomination of invention for＜a kind of optical fiber logical-communication system in optical channel protection method, Apparatus and system patent on 1+1 optical protection mechanism basis, realized N+1 or N+M protection scheme, but do not solve measuring range and precision problem.
Summary of the invention
In order to overcome defective and the deficiency that prior art exists; the switching threshold controlled range that traditional 1+1 optical protection mechanism exists is little, accuracy is not high to solve; and can not realize protected location is concentrated remotely-controlled technical problem, the present invention proposes scheme and system that a kind of high-precision remote control light path is switched.
Technical scheme provided by the invention is as follows:
A kind of high-precision remote optical path switch method, on-line monitoring and switch unit are passed through Ethernet or GPRS mode and remote console interactive information, adopt main and auxiliary fibre circuit to transmit light signal, and to optical signal power monitor and with set switching threshold relatively to determine that light path switches gating, step is as follows:
(1), initialization, comprise that on-line monitoring and switch unit reset, communication control unit resets, optical switch gating main optical path, empty buffer area;
(2), on-line monitoring and switch unit control chip detect and have or not serial port command, have then to forward step (8) to, otherwise forward next step to;
(3), main and auxiliary fibre circuit luminous power is monitored in real time, transmit major-minor light path optical power value to on-line monitoring and switch unit control chip;
(4), judge whether the main optical path optical power value is higher than threshold value, be then to forward step (2) to, otherwise forward next step to;
(5), judge that whether auxilliary light path optical power value is higher than threshold value, is then to forward step (7) to, otherwise forwards next step to;
(6), report an error, forward step (2) to remote console;
(7), the switches light switch, forward step (2) to;
(8), judge the serial ports instruction, if the gating light path then forwards step (10) to; If the inquiry light path then forwards step (11) to; If the inquiry performance number then forwards step (12) to; If setting threshold then forwards step (13) to; If switch to normal mode, then forward step (3) to; Otherwise forward next step to;
(9), to remote console loopback instruction errors information, forward step (2) to;
(10), the selected light path of optical switch gating, the loopback success message forwards step (2) to;
(11), the position of back light switching gate, forward step (2) to;
(12), return the optical power value of current selected light path, forward step (2) to;
(13), the optical power threshold in the reprogramming, forward step (2) to.
A kind of high-precision remote control light path switched system that is used for said method, form by on-line monitoring and switch unit, communication control unit and remote console, it is characterized in that on-line monitoring and switch unit are made of two groups of optical splitters, photodiode, logarithmic amplifier, A/D converter, optical switch and control chips; Two groups of optical splitters are positioned at the photodiode front and receive respectively from the light signal of main fiber and auxilliary optical fiber and with it and be decomposed into two paths of signals according to 3: 97 splitting ratios, wherein a road many light signal of beam split is sent to the usefulness of optical switch for the gating light path, and the road light signal that beam split is few is sent to photodiode; Connect logarithmic amplifier and A/D converter behind the photodiode successively, realize that light signal is carried out logarithm to be amplified and analog-to-digital conversion; A/D converter is connected to control chip by interface, and the interface on the control chip connects optical switch with the gating of control by main fiber or auxilliary optical fiber gained beam split light path; Communication control unit selects chip and communication unit control chip to constitute by ethernet controller, GPRS controller, sheet, and sheet selects chip to be connected with ethernet controller, GPRS controller, communication unit control chip respectively; Remote console is made of software platform, moves under computer linux system platform; On-line monitoring is connected with communication control unit with switch unit, and communication control unit links to each other with remote console through GPRS network or Ethernet, realizes the wired and wireless transmission of interactive information.
Described remote console is write by C++ based on ClientSocket assembly and AT command set, can realize deciphering and the transmission and the GPRS information processing of packet.
Above-mentioned GPRS is the abbreviation of general packet radio service technology (General Packet Radio Service), and this technology is widely used in network communications technology field.
The present invention adopts logarithmic amplifier to amplify and carry out on-line monitoring to the optical signal power value; Be implemented in linear light power monitoring and automatic gating light path, and accept the instruction that remote console transmits.
The system works pattern is divided two kinds, i.e. normal mode and compulsory mode.During normal mode, after light path broke down, system automaticallyed switch; During compulsory mode, system accepts remote console control, ignores automatic switching function.Specific as follows: under the fibre circuit normal mode of operation, system adopts optical splitter to gather optical power signals from main and auxiliary light path, realizes opto-electronic conversion through photodiode.The gained current value is realized exponential amplification through logarithmic amplifier, and obtains the relevant voltage value.After the A/D conversion, control chip can obtain major-minor light path optical power value.With itself and setting threshold relatively after, realize from dynamic response.If main optical path is lower than threshold value, auxilliary light path is normal, then switches to auxilliary light path; Otherwise if auxilliary light path is lower than threshold value, main optical path is normal, then switches to main optical path.Major-minor light path all is lower than threshold value, then reports an error.
Under the fibre circuit forced working pattern, on-line monitoring unit receiving remote console instruction.Agreement is carried out respective response by appointment.Under this mode of operation, on-line monitoring and switch unit are executed the remote console instruction, can feed back the optical signal power value and the current optical switch gating light path situation of main and auxiliary light path, by force gating light path and mode of operation reverted to normal mode.
Communication control unit is mainly handled information interaction and the transfer with remote console of on-line monitoring and switch unit.Control on Communication is single communicates by letter with switch unit with online monitoring, adopts the RS232 level format.When adopting wired mode to transmit, communication unit control chip Control Network Chip Packaging packet is written into buffer area, sends; When adopting the wireless mode transmission, communication unit control chip control gsm module encapsulation of data adopts the AT command set form to send.
During the remote console unattended, the real time scan network signal.To receive packet by the ClientSocket control or the AT command set form is counter understands, feed back to administrator interfaces, prompting keeper and deposit information in database; Remote console has the people to manage and when selecting the forced working pattern, then sends command adapted thereto, the scanning value of feedback.
For further perfect, can add the OTDR unit at on-line monitoring and switch unit.After detecting the light path fault, start this unit, detect the distance of fault point apart from on-line monitoring and switch unit.And in time feed back to the system manager and keep in repair and remedy.
Advantage of the present invention and good effect are as follows: after introducing logarithmic amplifier; significantly improve the precision of traditional fiber luminous power collection value and increased the scope of collection value; improved after the long Distance Transmission of optical fiber long distance line net because the decay problem accurately measured of being difficult to bigger than normal, made that the light path switching more accurately and reliably in the conventional light path protection.In addition, behind the introducing communication control unit, realized remote centralized management to the light path protection module.
Description of drawings
Fig. 1 constitutes schematic diagram for the present invention program system;
Wherein: 1, on-line monitoring and switch unit, 2, communication control unit, 3, remote console, 4, GPRS network, 5, Ethernet.
Fig. 2 is on-line monitoring of the present invention and switch unit structural representation;
Wherein: 6, main optical path, 7, auxilliary light path, 8, optical splitter, 9, photodiode, 10, logarithmic amplifier, 11, A/D converter, 12, control chip, 13, optical switch, 21, the gating light path.
Fig. 3 is a communication control unit structural representation of the present invention;
Wherein: 14, communication unit control chip, 15, sheet selects chip, 16, control command, 17, ethernet controller, 18, the GPRS controller, 19, Ethernet loopback information, 20, GPRS loopback information.
Fig. 4 is on-line monitoring of the present invention and switch unit workflow schematic diagram.Wherein: (1)-(13) are wherein each step.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment, but be not limited thereto.
Embodiment 1:
A kind of high-precision remote optical path switch method, on-line monitoring and switch unit are passed through Ethernet or GPRS mode and remote console interactive information, adopt main and auxiliary fibre circuit to transmit light signal, and to optical signal power monitor and with set switching threshold relatively to determine that light path switches gating, as shown in Figure 4, step is as follows:
(1), initialization, comprise that on-line monitoring and switch unit reset, communication control unit resets, optical switch gating main optical path, empty buffer area;
(2), on-line monitoring and switch unit control chip detect and have or not serial port command, have then to forward step (8) to, otherwise forward next step to;
(3), main and auxiliary fibre circuit luminous power is monitored in real time, transmit major-minor light path optical power value to on-line monitoring and switch unit control chip;
(4), judge whether the main optical path optical power value is higher than threshold value, be then to forward step (2) to, otherwise forward next step to;
(5), judge that whether auxilliary light path optical power value is higher than threshold value, is then to forward step (7) to, otherwise forwards next step to;
(6), report an error, forward step (2) to remote console;
(7), the switches light switch, forward step (2) to;
(8), judge the serial ports instruction, if the gating light path then forwards step (10) to; If the inquiry light path then forwards step (11) to; If the inquiry performance number then forwards step (12) to; If setting threshold then forwards step (13) to; If switch to normal mode, then forward step (3) to; Otherwise forward next step to;
(9), to remote console loopback instruction errors information, forward step (2) to;
(10), the selected light path of optical switch gating, the loopback success message forwards step (2) to;
(11), the position of back light switching gate, forward step (2) to;
(12), return the optical power value of current selected light path, forward step (2) to;
(13), the optical power threshold in the reprogramming, forward step (2) to.
Embodiment 2:
A kind of high-precision remote control light path switched system that is used for said method, as Figure 1-3, form by on-line monitoring and switch unit 1, communication control unit 2 and remote console 3, it is characterized in that on-line monitoring and switch unit 1 are made of two groups of optical splitters 8, photodiode 9, logarithmic amplifier 10, A/D converter 11, optical switch 13 and control chip 12; Two groups of optical splitters 8 are positioned at photodiode 9 fronts and receive respectively from the light signal of main fiber 6 and auxilliary optical fiber 7 and with it and be decomposed into two paths of signals according to the 3:97 splitting ratio, wherein a road many light signal of beam split is sent to the usefulness of optical switch 13 for the gating light path, and the road light signal that beam split is few is sent to photodiode 9; Connect logarithmic amplifier 10 and A/D converter 11 behind the photodiode 9 successively, realize that light signal is carried out logarithm to be amplified and analog-to-digital conversion; A/D converter 11 is connected to control chip 12 by interface, and the interface on the control chip 12 connects optical switch 13 with the gating light path 21 of control by main fiber 6 or auxilliary optical fiber 7 gained; Communication control unit 2 selects chip 15 and communication unit control chip 14 to constitute by ethernet controller 17, GPRS controller 18, sheet, and sheet selects chip 15 to be connected with ethernet controller 17, GPRS controller 18, communication unit control chip 14 respectively; Remote console 3 is made of software platform, moves under computer linux system platform; On-line monitoring is connected with communication control unit 2 with switch unit 1, and communication control unit 2 links to each other with remote console 3 through GPRS network 4 or Ethernet 5, realizes the wired and wireless transmission of interactive information.
Claims (2)
1. high-precision remote optical path switch method, on-line monitoring and switch unit are passed through Ethernet or GPRS mode and remote console interactive information, adopt main and auxiliary fibre circuit to transmit light signal, and to optical signal power monitor and with set switching threshold relatively to determine that light path switches gating, step is as follows:
(1), initialization, comprise that on-line monitoring and switch unit reset, communication control unit resets, optical switch gating main optical path, empty buffer area;
(2), on-line monitoring and switch unit control chip detect and have or not serial port command, have then to forward step (8) to, otherwise forward next step to;
(3), main and auxiliary fibre circuit luminous power is monitored in real time, transmit major-minor light path optical power value to on-line monitoring and switch unit control chip;
(4), judge whether the main optical path optical power value is higher than threshold value, be then to forward step (2) to, otherwise forward next step to;
(5), judge that whether auxilliary light path optical power value is higher than threshold value, is then to forward step (7) to, otherwise forwards next step to;
(6), report an error, forward step (2) to remote console;
(7), the switches light switch, forward step (2) to;
(8), judge the serial ports instruction, if the gating light path then forwards step (10) to; If the inquiry light path then forwards step (11) to; If the inquiry performance number then forwards step (12) to; If setting threshold then forwards step (13) to; If switch to normal mode, then forward step (3) to; Otherwise forward next step to;
(9), to remote console loopback instruction errors information, forward step (2) to;
(10), the selected light path of optical switch gating, the loopback success message forwards step (2) to;
(11), the position of back light switching gate, forward step (2) to;
(12), return the optical power value of current selected light path, forward step (2) to;
(13), the optical power threshold in the reprogramming, forward step (2) to.
2. light path switched system that is used for the described method of claim 1, form by on-line monitoring and switch unit, communication control unit and remote console, it is characterized in that on-line monitoring and switch unit are made of two groups of optical splitters, photodiode, logarithmic amplifier, A/D converter, optical switch and control chips; Two groups of optical splitters are positioned at the photodiode front and receive respectively from the light signal of main fiber and auxilliary optical fiber and with it and be decomposed into two paths of signals according to 3: 97 splitting ratios, wherein a road many light signal of beam split is sent to the usefulness of optical switch for the gating light path, and the road light signal that beam split is few is sent to photodiode; Connect logarithmic amplifier and A/D converter behind the photodiode successively, realize that light signal is carried out logarithm to be amplified and analog-to-digital conversion; A/D converter is connected to control chip by interface, and the interface on the control chip connects optical switch with the gating of control by main fiber or auxilliary optical fiber gained beam split light path; Communication control unit selects chip and communication unit control chip to constitute by ethernet controller, GPRS controller, sheet, and sheet selects chip to be connected with ethernet controller, GPRS controller, communication unit control chip respectively; Remote console is made of software platform, moves under computer linux system platform; On-line monitoring is connected with communication control unit with switch unit, and communication control unit links to each other with remote console through GPRS network or Ethernet, realizes the wired and wireless transmission of interactive information.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102265640A (en) * | 2011-06-21 | 2011-11-30 | 华为技术有限公司 | Optical line transmission protection system and method |
| CN102853908A (en) * | 2011-06-29 | 2013-01-02 | 株式会社岛津制作所 | Spectrophotometer |
| CN103209079A (en) * | 2013-03-27 | 2013-07-17 | 天脉聚源(北京)传媒科技有限公司 | Method and system for information interaction |
| CN103416008A (en) * | 2012-05-21 | 2013-11-27 | 华为海洋网络有限公司 | Repeater and loopback mode switching method |
| CN103701467A (en) * | 2013-12-06 | 2014-04-02 | 上海卫星工程研究所 | Logarithmic quantization compression system of analog signal output by large dynamic range infrared detector |
| CN104283607A (en) * | 2012-01-13 | 2015-01-14 | 李水进 | Optical fiber communication network monitoring protecting system and method thereof |
| CN109412684A (en) * | 2018-11-07 | 2019-03-01 | 东北电力大学 | A kind of city power optical fiber communication network on-line monitoring and automatic checkout system |
| CN111049570A (en) * | 2019-12-20 | 2020-04-21 | 国家电网有限公司 | Automatic switching protection system for optical fiber circuit |
| CN114584206A (en) * | 2022-04-28 | 2022-06-03 | 北京中昱光通科技有限公司 | Optical fiber line protection system |
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2010
- 2010-01-27 CN CN201010101788A patent/CN101789827A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012103696A1 (en) * | 2011-06-21 | 2012-08-09 | 华为技术有限公司 | Optical line transmission protection system and method |
| CN102265640A (en) * | 2011-06-21 | 2011-11-30 | 华为技术有限公司 | Optical line transmission protection system and method |
| US9191101B2 (en) | 2011-06-21 | 2015-11-17 | Huawei Technologies Co., Ltd. | Optical line transmission protection system and method |
| CN102265640B (en) * | 2011-06-21 | 2014-04-16 | 华为技术有限公司 | Optical line transmission protection system and method |
| CN102853908A (en) * | 2011-06-29 | 2013-01-02 | 株式会社岛津制作所 | Spectrophotometer |
| CN102853908B (en) * | 2011-06-29 | 2015-07-22 | 株式会社岛津制作所 | Spectrophotometer |
| CN104283607A (en) * | 2012-01-13 | 2015-01-14 | 李水进 | Optical fiber communication network monitoring protecting system and method thereof |
| CN104283607B (en) * | 2012-01-13 | 2017-07-04 | 李水进 | Optical fiber communication network monitoring and protecting system and method |
| CN103416008A (en) * | 2012-05-21 | 2013-11-27 | 华为海洋网络有限公司 | Repeater and loopback mode switching method |
| CN103209079B (en) * | 2013-03-27 | 2014-06-18 | 天脉聚源(北京)传媒科技有限公司 | Method and system for information interaction |
| CN103209079A (en) * | 2013-03-27 | 2013-07-17 | 天脉聚源(北京)传媒科技有限公司 | Method and system for information interaction |
| CN103701467A (en) * | 2013-12-06 | 2014-04-02 | 上海卫星工程研究所 | Logarithmic quantization compression system of analog signal output by large dynamic range infrared detector |
| CN103701467B (en) * | 2013-12-06 | 2017-08-29 | 上海卫星工程研究所 | Larger Dynamic scope infrared detector exports the logarithmic quantization compression method of analog signal |
| CN109412684A (en) * | 2018-11-07 | 2019-03-01 | 东北电力大学 | A kind of city power optical fiber communication network on-line monitoring and automatic checkout system |
| CN111049570A (en) * | 2019-12-20 | 2020-04-21 | 国家电网有限公司 | Automatic switching protection system for optical fiber circuit |
| CN114584206A (en) * | 2022-04-28 | 2022-06-03 | 北京中昱光通科技有限公司 | Optical fiber line protection system |
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Application publication date: 20100728 |