CN204615827U - A kind of Intelligent optical fiber distributor and system - Google Patents

A kind of Intelligent optical fiber distributor and system Download PDF

Info

Publication number
CN204615827U
CN204615827U CN201520220611.7U CN201520220611U CN204615827U CN 204615827 U CN204615827 U CN 204615827U CN 201520220611 U CN201520220611 U CN 201520220611U CN 204615827 U CN204615827 U CN 204615827U
Authority
CN
China
Prior art keywords
optical fiber
module
switching
power
intelligent
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.)
Active
Application number
CN201520220611.7U
Other languages
Chinese (zh)
Inventor
杜欣
杨肖波
陈海
向新宇
王剑
付璇
杨帆
王湛
杜力宇
陈涛
王加易
李劲龙
王谨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201520220611.7U priority Critical patent/CN204615827U/en
Application granted granted Critical
Publication of CN204615827U publication Critical patent/CN204615827U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Optical Communication System (AREA)

Abstract

The utility model discloses a kind of Intelligent optical fiber distributor and system, comprising: the light sense channel module of the luminous power of Real-Time Monitoring work at present optical fiber; With described smooth sense channel model calling, when described luminous power is lower than the threshold value of switching optical fiber preset, issue the light automatic protection module of the instruction switching optical fiber; And be connected with described smooth automatic protection module, respond the instruction of described switching optical fiber, cut-in stand-by optical fiber is the switching executing module of working optical fibre.Intelligent optical fiber distributor provided by the utility model and system; by the luminous power of real-time testing optical fiber; when the optical power value monitored is lower than the handoff threshold of setting; namely when primary optical fiber breaks down can quick automatic switching to spare fibre, thus realize protection to optical transmission system circuit.

Description

A kind of Intelligent optical fiber distributor and system
Technical field
The utility model relates to communication technical field, particularly relates to a kind of Intelligent optical fiber distributor and system.
Background technology
Current, the positive accelerated development of power production and construction, communication network is in continuous expansion, and communication network scale is doubled, and device line is numerous, business service is various in style, and task and the responsibility of communication speciality personnel are more and more heavier.In the face of huge powerline network, how under the condition of people power weakness, completing every safety in production task comprehensively, realize the safe and stable operation of the whole network, meet electrical network and enterprise to the ever-increasing demand of communication service, is the new huge challenge faced by Communication Personnel.
As everyone knows; relay protection of power system passage is by following dual principle construction: " two cover relaying protections of same circuit should configure two and overlap independently communication equipment; and require that overlapping independently communication power supply by two powers, and two cover communication equipments and communication power supply physically should be completely isolated ".Relaying protection communication is mainly route protection and provides special line communication, has special fibre core and multiplexing equipment 2 kinds of modes.
Region, In Hangzhou Region of Zhe Jiang Province is vast, communication network is in large scale, nearly 200 of existing main traffic station, lightguide cable link 4673 kilometers (major network), wherein nearly 1,000 kilometers of OPGW optical cable, operate to example with communication in 2012, there is Cable's Fault 86 in defect altogether in Hangzhou company, and cause the main cause of Cable's Fault may comprise high ferro, subway, municipal administration, greening, river course construction cause, and steal, glean and collect scraps, causing of burning, even vehicle draws, severs, toy destruction etc. causes.These reasons occur unexpected, do not have rule, are difficult to avoid completely, and this has great threat to the stable operation of whole power telecom network and the safe operation of whole electrical network.
For vital relay protection channel, no matter be special fibre core or multiplex channel protection, optical fiber generally adopts four-core, wherein two cores with, another two cores are in pattern for subsequent use, according to the current mode of production, the program of dealing with problems is, when optical cable break down cause relaying protection optical fiber occur interrupt time, need immediately spare fibre to be come into operation, staff must be sent specially to on-the-spot, mix to on-the-spot light and adjust; Even if when planned optical cable cleft grafting task, also need scene first to be accessed by spare fibre, then implement cutover, after treating that cutover completes, then light path for subsequent use is exited, get back to original optical path.
Due to the impact of the aspects such as distance and working procedure, make such operating efficiency extremely low, extend the break period of protection business, have great threat to the safety and stability of electrical network.Therefore, a kind of Intelligent optical fiber distributor is developed and system is necessary.
Summary of the invention
The purpose of this utility model is to provide a kind of Intelligent optical fiber distributor and system, makes when primary optical fiber breaks down, can by the light path quick automatic switching of band business to spare fibre.
For solving the problems of the technologies described above, the utility model provides a kind of Intelligent optical fiber distributor, comprising:
The light sense channel module of the luminous power of Real-Time Monitoring work at present optical fiber;
With described smooth sense channel model calling, when described luminous power is lower than the threshold value of switching optical fiber preset, issue the light automatic protection module of the instruction switching optical fiber;
And be connected with described smooth automatic protection module, respond the instruction of described switching optical fiber, cut-in stand-by optical fiber is the switching executing module of working optical fibre.
Alternatively, described smooth sense channel module comprises:
Light splitting is carried out to the light signal of described work at present optical fiber, the optical branching device of Extraction parts light signal;
Be connected with described optical branching device, the described part optical signals extracted be converted to the photo-detector of photo-signal;
Be connected with described photo-detector, described photo-signal be converted to voltage signal and the chopper-zero-stabilized programmable amplifier amplified;
Be connected with described chopper-zero-stabilized programmable amplifier, the copped wave additional components in described voltage signal and interference signal carried out to the programmable filter of filtering;
And be connected with described programmable filter, digital signal will be converted to through the filtered signal of described programmable filter, obtain the A/D converter of the luminous power of described work at present optical fiber.
Alternatively, also comprise:
Be connected with described smooth automatic protection module, after issuing at described smooth automatic protection module the instruction switching optical fiber, send the alarm module of alarm prompt.
Alternatively, also comprise:
For providing the power module of power supply.
Alternatively, described power module adopts dual power supply, is configured with standard AC power supply jack and DC power supply binding post.
Alternatively, also comprise:
Be connected with described power module, when described power module power-off, maintain the power down automatic protection module that current optical channel is constant.
Alternatively, also comprise:
Receive the switching command of user by key-press input, the mode of operation controlling described switching executing module is the panel control module of manual switchover or automatic switchover mode.
Alternatively, also comprise:
To the display module that connection and/or the operation wavelength of the state of mode of operation, luminous power instruction situation, light path show.
Alternatively, also comprise:
What receive the threshold value of the switching optical fiber of user's input arranges instruction, the online query statement of luminous power and/or the switching command of mode of operation on main channel, responds the described serial ports control module arranging instruction, query statement and/or switching command.
The utility model additionally provides a kind of Intelligent optical fiber distribution system, comprises transmission equipment, primary optical fiber, at least one spare fibre, communication interface, operating maintenance terminal and the Intelligent optical fiber distributor described in above-mentioned any one.
Intelligent optical fiber distributor provided by the utility model and system; by the luminous power of real-time testing optical fiber; when the optical power value monitored is lower than the handoff threshold of setting; namely when primary optical fiber breaks down can quick automatic switching to spare fibre, thus realize protection to optical transmission system circuit.Like this concerning accident maintenance especially for optical cable cleft grafting work, not only time saving and energy saving, decrease operation, also shorten the operating time, greatly reduce quantities, reduce job costs and the loss to equipment, the safe and stable operation for electrical network provides strong guarantee.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of embodiment of Intelligent optical fiber distributor provided by the utility model;
Fig. 2 is the structured flowchart of light sense channel module in the another kind of embodiment of Intelligent optical fiber distributor provided by the utility model;
Fig. 3 is the schematic diagram of Intelligent optical fiber distribution system provided by the utility model;
Fig. 4 is that the operation principle of Intelligent optical fiber distribution system provided by the utility model illustrates sketch
Embodiment
In prior art, no matter be paroxysmal Cable's Fault or planned cutover, when spare fibre comes into operation by needs immediately, staff all must be sent specially to on-the-spot, mix to on-the-spot light and adjust, so, due to the feature of work of electric power system, the such as use of two tickets, the direct shortcoming that the allotment etc. of third party personnel can bring is: job costs are high, people, thing, the large consumption of financial resources; Duration reaction speed is slow, and efficiency is low; The state of spare fibre can not be detected in real time; Due to the impact of distance and the aspect such as working procedure, make such work ratio and low, extend the break period of important protection business, have great threat to the safety and stability of electrical network.
Given this, core of the present utility model is to provide a kind of Intelligent optical fiber distributor, makes to be switched to spare fibre by fast automatic for the light path of band business when primary optical fiber breaks down.
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, this device comprises the structured flowchart of a kind of embodiment of Intelligent optical fiber distributor provided by the utility model:
Light sense channel module 100, for the luminous power of Real-Time Monitoring work at present optical fiber;
Light automatic protection module 200, for the threshold value of described luminous power with the switching optical fiber preset being compared, when described luminous power is lower than described threshold value, issues the instruction switching optical fiber;
Switching executing module 300, for responding the instruction of described switching optical fiber, cut-in stand-by optical fiber is working optical fibre.
Intelligent optical fiber distributor provided by the utility model; by the luminous power of real-time testing optical fiber; when the optical power value monitored is lower than the handoff threshold of setting; namely break down at primary optical fiber, light signal too low time, probe unit power too low time; can quick automatic switching to spare fibre, thus realize protection to optical transmission system circuit.Like this concerning accident maintenance especially for optical cable cleft grafting work, not only time saving and energy saving, decrease operation, also shorten the operating time, greatly reduce quantities, reduce job costs and the loss to equipment, the safe and stable operation for electrical network provides strong guarantee.
The utility model provides the another kind of embodiment of Intelligent optical fiber distributor, compared with a upper embodiment, in the present embodiment, light sense channel module can specifically be divided into again: optical branching device 101, photo-detector 102, chopper-zero-stabilized programmable amplifier 103, programmable filter 104 and A/D converter 105, as shown in Figure 2.
Wherein, optical branching device 101, for carrying out light splitting to the light signal of described work at present optical fiber, Extraction parts light signal;
Photo-detector 102, for being converted to photo-signal by the described part optical signals extracted;
Chopper-zero-stabilized programmable amplifier 103, for being converted to voltage signal by described photo-signal and amplifying;
Programmable filter 104, for carrying out filtering to the copped wave additional components in described voltage signal and interference signal;
A/D converter 105, for being converted to digital signal through the filtered signal of described programmable filter, will obtain the luminous power of described work at present optical fiber.
For the luminous power on working optical fibre, by light sense channel module 100, through the part luminous power that light path device 101 is separated, detected by PIN photo-detector 102 and be converted to photoelectric current, by follow-up chopper-zero-stabilized programmable amplifier 103, current signal is converted to voltage signal, realizes I/V and change and amplify, after programmable filter 104 filtering copped wave additional components and interference signal, deliver to A/D converter, become the digital signal corresponding to input optical power level.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
Alarm module 400, for issue at described smooth automatic protection module switch optical fiber instruction after, send alarm prompt.
The object of such setting can remind the working condition of relevant staff's optical fiber in time, user-friendly.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
For providing the power module 500 of power supply.
Described power module adopts dual power supply.Particularly, duplicate supply can adopt DC-48V and AC220V.Meanwhile, standard AC power supply jack and DC power supply binding post is configured with.
Adopt duplicate supply to power simultaneously and can reduce the risk of power down, ensure the stability of whole network operation.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
Power down automatic protection module 600, for when described power module power-off, maintains current optical channel constant.
Particularly, system in power-off own or machine room power-off time, light path protection system interior lights switch is constant by maintaining original passage.The stability of whole electrical network under powering-off state can be ensured like this.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
Panel control module 700, for receiving the switching command of user by key-press input, the mode of operation controlling described switching executing module is manual switchover or automatic switchover mode.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
Display module 800, indicates the connection of situation, light path and/or operation wavelength to show for the state to mode of operation, luminous power.
As a kind of preferred implementation, Intelligent optical fiber distributor provided by the utility model can further include:
Serial ports control module 900, arranges instruction, the online query statement of luminous power and/or the switching command of mode of operation on main channel for what receive the threshold value of the switching optical fiber of user's input, responds and describedly arrange instruction, query statement and/or switching command.
User can pass through serial port setting switches light performance number, the online luminous power situation on inquiry main channel.Manual switchover pattern or automatic switchover mode state can also be operated in by serial port setting system.
Further, Intelligent optical fiber distributor provided by the utility model can also set up management control system.This system has graphical operation interface intuitively, operability and maintainability good, possess the characteristics such as the data management of good autgmentability, jumbo managerial ability and high safety.Systems soft ware adopts friendly graphical interface of user, and systems soft ware is easy to install, and supporting Ethernet interface, is a set of powerful network management system.Network management system provides the current luminous power performance monitoring of each optical interface of equipment; The current attenuation performance monitoring of active and standby route; Data collection time intervals is arranged; Statistical conversion, preservation and printing, the functions such as inquiry, deletion performance data.
Intelligent optical fiber distributor provided by the utility model, fast automaticly can be switched to spare fibre when primary optical fiber breaks down, master channel is refunded after recovering automatically.Especially for optical cable cleft grafting work, it is inestimable that time can shorten ratio, quantities greatly reduces, operating time shortens, work materials cost reduction, little to equipment loss, controlled in real time, so can dispatch arbitrarily active and standby Work route (line maintenance under guarantee business is without the prerequisite blocked, cutover is dispatched), the active and standby optical fiber power of Real-Time Monitoring, support the far and near process control of whole system, the convenient management to equipment, safeguard, greatly promote making the efficiency of whole work, make to protect the time of service disconnection to drop to minimum, the reliability of relaying protection and coverage ratio are greatly improved, safe and stable operation for electrical network provides strong guarantee.
As shown in Figure 3, the utility model additionally provides a kind of Intelligent optical fiber distribution system, comprises transmission equipment, primary optical fiber, at least one spare fibre, communication interface, operating maintenance terminal and Intelligent optical fiber distributor described above.As shown in Figure 4; for website A optical receiving end: the active and standby light signal sent here by opposite end is connected on R1, R2 light mouth of this equipment; when R1 light signal is normal; optical signals RX output in this road is delivered to local optical transmitter and receiver and is carried out signal transacting; when R1 light signal is abnormal; device interior carries out light path switching, local optical transmitter and receiver is delivered in the optical signals RX of R2 light path output and carries out signal transacting, reach Optical Line Protection function.For website A light transmitting terminal: the light signal that local optical transmitter and receiver exports receives the TX port of this equipment, when the R1 light signal received is normal, the light signal of TX outputs to opposite end through T1, simultaneously, in order to ensure that opposite equip. normally can carry out light path switching, the laser signal that this device interior sends 1310nm or 1550nm sends through T2.When the R1 light signal received is abnormal, switch through light path, the light signal of TX outputs to opposite end through T2, and the laser signal that this device interior is sent simultaneously sends through T1.
Intelligent optical fiber distributor SODF provided by the utility model (Smart Optical Distribution Frame), auxiliary operation maintenance terminal can realize the functions such as optical power monitoring, optical path auto-switch and network management.SODF can form the protection scheme of various path, main line simply, economically, also can protect the various network needing light path to switch, thus sets up one without blocking-ups, high reliability, safety is flexible, anti-disaster ability is strong optical communication net.Active and standby Work route (line maintenance, cutover scheduling) is dispatched arbitrarily under the business of guarantee is without the prerequisite blocked; the active and standby optical fiber power of Real-Time Monitoring; support the far and near process control of whole system; the convenient management to equipment, maintenance; greatly promote making the efficiency of whole work; make to protect the time of service disconnection to drop to historical low, the reliability of relaying protection and coverage ratio are greatly improved, and the safe and stable operation for electrical network provides strong guarantee.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (8)

1. an Intelligent optical fiber distributor, is characterized in that, comprising:
The light sense channel module of the luminous power of Real-Time Monitoring work at present optical fiber;
With described smooth sense channel model calling, when described luminous power is lower than the threshold value of switching optical fiber preset, issue the light automatic protection module of the instruction switching optical fiber;
Be connected with described smooth automatic protection module, respond the instruction of described switching optical fiber, cut-in stand-by optical fiber is the switching executing module of working optical fibre;
For providing the power module of power supply;
And be connected with described power module, when described power module power-off, maintain the power down automatic protection module that current optical channel is constant.
2. Intelligent optical fiber distributor as claimed in claim 1, it is characterized in that, described smooth sense channel module comprises:
Light splitting is carried out to the light signal of described work at present optical fiber, the optical branching device of Extraction parts light signal;
Be connected with described optical branching device, the described part optical signals extracted be converted to the photo-detector of photo-signal;
Be connected with described photo-detector, described photo-signal be converted to voltage signal and the chopper-zero-stabilized programmable amplifier amplified;
Be connected with described chopper-zero-stabilized programmable amplifier, the copped wave additional components in described voltage signal and interference signal carried out to the programmable filter of filtering;
And be connected with described programmable filter, digital signal will be converted to through the filtered signal of described programmable filter, obtain the A/D converter of the luminous power of described work at present optical fiber.
3. Intelligent optical fiber distributor as claimed in claim 2, is characterized in that, also comprise:
Be connected with described smooth automatic protection module, after issuing at described smooth automatic protection module the instruction switching optical fiber, send the alarm module of alarm prompt.
4. Intelligent optical fiber distributor as claimed in claim 1, is characterized in that, described power module adopts dual power supply, is configured with standard AC power supply jack and DC power supply binding post.
5. the Intelligent optical fiber distributor as described in any one of Claims 1-4, is characterized in that, also comprise:
Receive the switching command of user by key-press input, the mode of operation controlling described switching executing module is the panel control module of manual switchover or automatic switchover mode.
6. the Intelligent optical fiber distributor as described in any one of Claims 1-4, is characterized in that, also comprise:
To the display module that connection and/or the operation wavelength of the state of mode of operation, luminous power instruction situation, light path show.
7. the Intelligent optical fiber distributor as described in any one of Claims 1-4, is characterized in that, also comprise:
What receive the threshold value of the switching optical fiber of user's input arranges instruction, the online query statement of luminous power and/or the switching command of mode of operation on main channel, responds the described serial ports control module arranging instruction, query statement and/or switching command.
8. an Intelligent optical fiber distribution system, is characterized in that, comprises transmission equipment, primary optical fiber, at least one spare fibre, communication interface, operating maintenance terminal and the Intelligent optical fiber distributor as described in any one of claim 1 to 7.
CN201520220611.7U 2015-04-13 2015-04-13 A kind of Intelligent optical fiber distributor and system Active CN204615827U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520220611.7U CN204615827U (en) 2015-04-13 2015-04-13 A kind of Intelligent optical fiber distributor and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520220611.7U CN204615827U (en) 2015-04-13 2015-04-13 A kind of Intelligent optical fiber distributor and system

Publications (1)

Publication Number Publication Date
CN204615827U true CN204615827U (en) 2015-09-02

Family

ID=53968348

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520220611.7U Active CN204615827U (en) 2015-04-13 2015-04-13 A kind of Intelligent optical fiber distributor and system

Country Status (1)

Country Link
CN (1) CN204615827U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104753585A (en) * 2015-04-13 2015-07-01 国家电网公司 Intelligent optical fiber distribution device
CN106533543A (en) * 2016-11-22 2017-03-22 中国南方电网有限责任公司 Low-rate optical signal protection device and protection method
CN107465450A (en) * 2017-09-21 2017-12-12 成都中通嘉业科技发展有限公司 The switching of transmission services and protection device and control method during a kind of fiber failure
CN111917462A (en) * 2020-06-23 2020-11-10 深圳震有科技股份有限公司 Protection control method and device for 5G forward transmission equipment and computer equipment medium
CN113381802A (en) * 2021-06-02 2021-09-10 国网安徽省电力有限公司铜陵供电公司 Intelligent optical path switching system based on optical switching matrix

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104753585A (en) * 2015-04-13 2015-07-01 国家电网公司 Intelligent optical fiber distribution device
CN106533543A (en) * 2016-11-22 2017-03-22 中国南方电网有限责任公司 Low-rate optical signal protection device and protection method
CN106533543B (en) * 2016-11-22 2023-11-10 中国南方电网有限责任公司 Low-rate optical signal protection device and protection method
CN107465450A (en) * 2017-09-21 2017-12-12 成都中通嘉业科技发展有限公司 The switching of transmission services and protection device and control method during a kind of fiber failure
CN107465450B (en) * 2017-09-21 2020-08-04 成都中通嘉业科技发展有限公司 Switching and protecting device and control method for transmission service during optical fiber fault
CN111917462A (en) * 2020-06-23 2020-11-10 深圳震有科技股份有限公司 Protection control method and device for 5G forward transmission equipment and computer equipment medium
CN113381802A (en) * 2021-06-02 2021-09-10 国网安徽省电力有限公司铜陵供电公司 Intelligent optical path switching system based on optical switching matrix
CN113381802B (en) * 2021-06-02 2023-07-07 国网安徽省电力有限公司铜陵供电公司 Intelligent light path switching system based on light exchange matrix

Similar Documents

Publication Publication Date Title
CN104753585A (en) Intelligent optical fiber distribution device
CN204615827U (en) A kind of Intelligent optical fiber distributor and system
CN101414878B (en) Method and apparatus for implementing trunk optical fiber rapid protection switching of EPON system
CN102412896B (en) Optical line protection system for realizing single-end monitoring
CN102437875A (en) Automatic optical fiber switching device for intensive wavelength division multiplexing system
CN101895337B (en) Double-fiber hot backup radio-frequency intelligent optical module
CN202488457U (en) Optical fiber automatic switching device of dense wavelength division multiplexing system
CN202334524U (en) Optical link protecting system realizing single-end monitoring
CN103795458A (en) Optical fiber switching protection system and control method thereof
CN203645671U (en) Fiber switching protection system
CN100596037C (en) Apparatus for providing node protection in optical network and implementing method thereof
CN203608203U (en) High-speed electronic switch type optical cable protector
CN101179334A (en) Optical fiber network alternate channel switch controller
CN209930259U (en) Intelligent optical cable monitoring system with optical cable protection function
CN100496002C (en) Optical fiber access net and its communication protecting method
CN106656265B (en) Mixed medium communication network and uninterrupted communication method
CN208971516U (en) Fibre circuit automatically switches protection system
CN105591688B (en) A kind of optical fiber switch protecting system suitable for optical fiber switch protecting equipment
CN204615828U (en) Intelligent optical circuit automatic switching protection equipment
CN103606908A (en) A protection system applicable to an electrical network integrated circuit
CN207053244U (en) A kind of stability control equipment and backup auto-activating device interlock control apparatus and system
CN202018591U (en) Terminal controller for electricity using safety early warning system
CN114389355A (en) Centralized GOOSE interlocking device
CN105356934B (en) A kind of signal behavior mode of high speed electronic switch type cable protection instrument
CN106033993B (en) Optical line terminal interface arrangement and its error protection and power-economizing method

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant