CN105375981B - A kind of optical cable survey system and method - Google Patents
A kind of optical cable survey system and method Download PDFInfo
- Publication number
- CN105375981B CN105375981B CN201510647892.9A CN201510647892A CN105375981B CN 105375981 B CN105375981 B CN 105375981B CN 201510647892 A CN201510647892 A CN 201510647892A CN 105375981 B CN105375981 B CN 105375981B
- Authority
- CN
- China
- Prior art keywords
- optical cable
- unit
- optical
- signal
- survey system
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0771—Fault location on the transmission path
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of optical cable survey system and methods, it is characterised in that it includes optical signal generating unit, optical interference circuit unit, signal processing unit, central processing control unit, audio visual signal output unit, mobile network communication unit, server data relay unit and cell phone software unit.The real-time data communication and information exchange of optical cable census information are carried out between mobile network communication unit, server data relay unit and cell phone software unit by wireless network so that field engineering personnel can use cell phone software to observe the testing result image on the optical cable survey system of distal end in real time.The present invention solves optical cable construction place personnel and computer room personnel using loss of learning and uncertain problem caused by speech exchange, effectively increases the efficiency and accuracy of optical cable lookup.
Description
Technical field
The invention belongs to optical cable detection fields, are related to a kind of optical cable survey system, and in particular to a kind of to use cell phone software
Carry out the long-range optical cable survey system and method for searching optical cable.
Background technology
In work is changed its course in the daily maintenance of cable resource, construction and cutover, the search and orientation of optical cable is critical issue,
Therefore optical cable survey system is the important tool in construction link.It usually requires to place it in machine using optical cable survey system
Room is exchanged by the voice communication of field engineer and computer room engineering teacher and searches information to feed back optical cable.This speech exchange
On the one hand mode affects the efficiency of optical cable lookup, on the other hand being transmitted due to information, loss of learning that human factor is brought
And uncertainty, the accuracy that optical cable is searched can be eventually affected.So we need one kind that can observe directly at the scene
The method of shape information in computer room on optical cable survey system.
In view of this, it is necessary to which a kind of optical cable survey system and side that long-range lookup optical cable is carried out using cell phone software is provided
Method, to solve the above problems.
Invention content
The purpose of the present invention is：In order to overcome existing optical cable survey system that can not observe test case in real time at the scene
Deficiency, the present invention provides a kind of novel optical cable survey system and methods so that field engineering personnel can use mobile phone soft
Part is real-time and easily observes the test information in computer room on optical cable survey system, so as to accurately and efficiently search optical cable.
To achieve these goals, the technical solution adopted in the present invention is：A kind of optical cable survey system, feature exist
In including optical signal generating unit, optical interference circuit unit, signal processing unit, central processing control unit, audio visual signal
Output unit, mobile network communication unit, server data relay unit and cell phone software unit, the optical signal generating unit
Detection optical signal is generated, optical cable to be measured is injected after optical interference circuit unit, detection optical signal generates end face in optical cable end to be measured
Reflection returns to optical interference circuit unit, is converted to electric signal through signal processing unit, central processing control unit will receive
Electric signal processing exported into image, audio and wireless signal, image and audio signal by audio visual signal output unit, wirelessly
Signal is sent to server data relay unit via mobile network communication unit, and cell phone software unit is forwarded to by server
Afterwards, the image identical with audio visual signal output unit and audio signal are generated on mobile phone.
Optical cable survey system as described above, which is characterized in that the mobile network communication unit using serial port circuit with
Central processing control unit communicates.
Optical cable survey system as described above, which is characterized in that the server data relay unit uses network service
Device is developed using Java language.
Optical cable survey system as described above, which is characterized in that the cell phone software unit using Java and
Objective-C language developments are separately operable on the mobile phone for supporting Android and iOS operating systems, including showing test waves
Shape, sectional drawing output test information, the function of remote control optical cable survey system.
Optical cable survey system as described above, which is characterized in that the optical signal generating unit include constant-current driven module,
Temperature control modules and laser generate detection light letter by central processing control unit control constant-current driven module driving laser
Number.
Optical cable survey system as described above, which is characterized in that the optical interference circuit unit includes optical coupler module A, light
Coupling module B and time delay module, detection optical signal inject optical cable to be measured after optical interference circuit unit, are returned after fiber end reflections
To optical interference circuit, and multipath light signal is generated, generation interference, is received by signal processing unit, when optical cable between them
During the disturbance vibrated of any one place, the optical signal phase propagated wherein changes, and causes the light work(of final reflected light signal
Rate changes.
Optical cable survey system as described above, which is characterized in that the signal processing unit includes photodetector
And filter amplification circuit, the optical signal returned from optical cable to be measured generates electric signal after being received by a photoelectric detector, filtered to put
It is exported after big processing, the variation of luminous power can also be captured by photodetector.
A kind of optical cable census method using above-mentioned any one optical cable survey system, which is characterized in that including following step
Suddenly：
1) optical cable to be measured in optical cable survey system connection computer room, emission detection optical signal；
2) after optical cable survey system receives the optical signal that optical cable to be measured returns, image, audio, wireless three are processed into
Kind signal；
3) the audio visual signal output unit output waveform and sound that image and audio signal pass through optical cable survey system；
4) wireless signal is exported by mobile network communication unit, and cell phone software is sent to by server data relay unit
Unit is exported by being converted into image after cell phone software cell processing；
5) same waveform image on the liquid crystal touch display screen with optical cable survey system is observed using cell phone software unit,
By tapping optical cable to be measured, by observing whether waveform image changes, so that it is determined that whether current optical cable is required lookup
Optical cable.
Optical cable census method as described above, which is characterized in that control signal is sent by cell phone software unit, by clothes
Business device data relay unit is sent to mobile network communication unit, and optical cable survey system is made accordingly after receiving control signal
Feedback realizes the function that optical cable survey system is manipulated by mobile phone remote.
Optical cable census method as described above, which is characterized in that the wireless signal uses specific data packet format, interior
Hold the optical information for including optical cable to be measured and returning, the status information of current optical cable survey system and optical cable survey system and mobile phone is soft
Matched identity information is identified between part unit.
Due to the adoption of the above technical scheme, the present invention has following innovative point compared with prior art：
1) mobile network communication unit is added to, cell phone software can be used at the construction field (site) during optical cable is searched
It is immediately seen the result that optical cable survey system searches optical cable；
2) cell phone software can also be used to realize the function of remote control optical cable survey system.
Present invention comparison prior art has following remarkable advantage：
After being integrated with mobile network communication unit, field engineering personnel can break away from because the information brought of speech exchange not
Certainty and loss of learning problem not only effectively increase the accuracy and efficiency of optical cable lookup, also save optical cable maintenance inspection
Human cost during survey.
Description of the drawings
Fig. 1 flows to schematic block diagram for each member connection structure of the present invention and signal.
Fig. 2 generally investigates function schematic block diagram for optical cable.
Fig. 3 checks optical cable findings of the survey hum pattern for the present invention using cell phone software.
Symbol description in attached drawing：1- optical signal generating units, 2- optical interference circuit units, 3- signal processing units,
4- central processing control units, 5- audio visual signal output units, 6- mobile network communication units, 7- server data transfer lists
Member, 8- cell phone software units, 9- optical cables to be measured, 11- temperature control modules, 12- lasers, 13- constant-current driven modules, 21- light
Coupling module A, 22- time delay module, 23- optical coupler modules B, 31- photodetector, 32- filter amplification circuits, 41-ARM processing
Device, 51- liquid crystal touch display screens, 52- audio output circuits, the output of 61- wireless signals.
Specific embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.Those skilled in the art can make various modifications or changes to the present invention, these
Equivalent form is equally within the scope of claims listed by the application limit.
It is that the connection structure of each component of optical cable survey system and signal flow to schematic block diagram in the present invention shown in Fig. 1, including
Optical signal generating unit 1, optical interference circuit unit 2, signal processing unit 3, central processing control unit 4, audio visual signal are defeated
Go out unit 5, mobile network communication unit 6, server data relay unit 7 and cell phone software unit 8.The principle of the present invention is：
The optical signal generating unit 1 generates detection optical signal, optical cable 9 to be measured is injected after optical interference circuit unit 2, optical signal is being treated
It surveys 9 end of optical cable and generates end face reflection return optical interference circuit unit 2, be converted to electric signal through signal processing unit 3, center
The Electric signal processing received is passed through audiovisual by processing and control element (PCE) 4 into image, audio and wireless signal, image and audio signal
Signal output unit 5 exports, and wireless signal is sent to server data relay unit 7 via mobile network communication unit 6, passes through
After server is forwarded to cell phone software unit 8, the image identical with audio visual signal output unit 5 and audio letter are generated on mobile phone
Number.The present invention passes through above-mentioned signal pass-through mode so that live engineering staff can be viewed by mobile phone and be shown in light
Image information on cable survey system screen, so as to which the work for searching optical cable can be carried out more efficiently and accurately.
It is optical cable generaI investigation function schematic block diagram in the present invention shown in Fig. 2.Central processing control unit 4 described in Fig. 1 is
Cortex-M3 series A RM processors 41, arm processor model high-performance low-power-consumption used in the present embodiment
STM32F103VET6 processors.The optical signal generating unit 1 includes constant-current driven module 13,11 and of temperature control modules
Laser 12, wherein constant-current driven module 13 use OPA569 chips, and temperature control modules 11 are using DRV591 chips cooperation half
Conductor thermoelectric cooler (TEC, thermo electric cooler), laser 12 uses superradiance of the wavelength for 1550nm
Light emitting diode（SLD）, maximum output luminous power is 3mW.The optical interference circuit unit 2 includes optical coupler module A, optical coupling
Module B and time delay module 22, wherein optical coupler module A 21 are 2 × 2 fiber couplers, and optical coupler module B 23 is 2 × 1 optical fiber
Coupler, time delay module 22 use the coiled fiber that length is 1.5km.The signal processing unit 3 includes photodetection
Device 31 and filter amplification circuit 32, wherein photodetector 31 include using PIN photodiode, filter amplification circuit 32
Controllable gain amplifying circuit and low-pass filter circuit.The audio visual signal output unit 5 includes 51 He of liquid crystal touch display screen
Audio output circuit 52.Such as connection mode in Fig. 2, the two-arm difference connecting laser 12 and photoelectricity of 21 sides of optical coupler module A
A wherein arm of detector 31, opposite side two-arm connection time delay module 22 and optical coupler module B 23, optical coupler module B's 23
Another arm is connect with 22 opposite side of time delay module, and the single armed of opposite side connects optical cable 9 to be measured.When searching optical cable, driven by constant current
Module 13 exports stable driving current, and driving laser 12 generates stable detection optical signal and enters optical interference circuit unit 2, visits
Light signal becomes two ways of optical signals on optical coupler module A punishment road, wherein believing all the way via time delay module 22 and another way light
Number converge at optical coupler module B 23, inject optical cable 9 to be measured, and Fresnel reflection, reflected light signal are generated in optical fiber connector
Optical interference circuit unit 2 is returned to, becomes four road optical signals, the wherein identical two-way light of light path after eventually passing through optical coupler module A 21
Interference effect is generated, is received by photodetector 31, arm processor 41 collects the electric signal of the output of photodetector 31, and
It is processed into image and audio signal is exported to liquid crystal touch display screen 51 and audio output circuit 52.It is arbitrary when optical cable
When being tapped at one, the optical signal phase propagated wherein changes, the luminous power that final photodetector 31 is caused to receive
Variation, the information that photodetector 31 captures after treatment, can pass through liquid crystal touch display screen 51 by arm processor 41
It is clearly observed current optical cable and controls Mobile phone horn or ear by the result information tapped and by audio output circuit 52
The audio-frequency information that machine is sent out.
Fig. 3 show the schematic diagram that the present invention checks optical cable findings of the survey information using cell phone software.Shifting described in figure
Dynamic network communication unit 6 includes serial communication circuit, wireless communication module, and wherein wireless communication module is produced using Huawei Company
3G/4G modules, communicated using serial ports and arm processor 41.The transit server unit 7 is using Ali's cloud company
The ECS Cloud Servers of offer, server program are developed using Java language.The cell phone software unit 8 using Java and
Objective-C language developments are separately operable on the mobile phone for supporting Android and iOS operating systems.The principle of the invention
It is, after arm processor 41 as described above collects the electric signal of the output of photodetector 31, in addition to being processed into image
And other than audio signal, wireless signal can be also processed into, is exported by mobile network communication unit 6.Described is wireless
Signal includes the image signal data detected, status information data, optical cable survey system and the hand of current optical cable survey system
Matched identity information is identified between machine software unit 8.Wireless signal is sent to server data by carrier network
Relay unit 7, cell phone software receives the wireless signal that server data relay unit 7 is sent, and image therein is believed
After number extracts, image is drawn out on mobile phone screen.By above-mentioned processing, realize and observed using cell phone software
This function of identical image information on the liquid crystal touch display screen 51 of optical cable survey system.Control also can be transmitted in cell phone software
Order, is transmitted to mobile network communication unit 6, control command is received by arm processor 41 by server data relay unit 7
After make corresponding feedback action, realize cell phone software unit 8 control optical cable survey system function.It is generally investigated due to optical cable and is
Place of the place used usually with lookup optical cable unite not at one, searching the field engineering personnel of optical cable generally can not directly see
The image information on optical cable survey system is observed, the invention enables site operation personnel to be observed directly by cell phone software
The result images that optical cable is searched substantially increase the efficiency and accuracy of work.
Finally it should be noted that more than specific embodiment is merely illustrative of the technical solution of the present invention and it is unrestricted,
Although the present invention is described in detail with reference to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be right
Technical scheme of the present invention is modified or replaced equivalently, equal without departing from the spirit and scope of technical solution of the present invention
It is intended to be within the scope of the claims of the invention.
Claims (9)
1. a kind of optical cable survey system, which is characterized in that including optical signal generating unit, optical interference circuit unit, signal receiving area
Manage unit, central processing control unit, audio visual signal output unit, mobile network communication unit, server data relay unit
With cell phone software unit, the optical signal generating unit generates detection optical signal, optical cable to be measured is injected after optical interference circuit unit,
It detects optical signal and end face reflection return optical interference circuit unit is generated in optical cable end to be measured, be converted to through signal processing unit
Electric signal, central processing control unit believe the Electric signal processing received into image, audio and wireless signal, image and audio
It number is exported by audio visual signal output unit, wireless signal is sent to server data transfer list via mobile network communication unit
Member, after being forwarded to cell phone software unit by server data relay unit, generation and audio visual signal output unit on mobile phone
Identical image and audio signal；Control signal is sent by cell phone software unit, is sent by server data relay unit
Mobile network communication unit, optical cable survey system is given to make corresponding feedback after receiving control signal, is realized remote by mobile phone
Journey manipulates the function of optical cable survey system.
2. optical cable survey system according to claim 1, which is characterized in that the mobile network communication unit uses serial ports
Circuit communicates with central processing control unit.
3. optical cable survey system according to claim 1, which is characterized in that the server data relay unit uses net
Network server, is developed using Java language.
4. optical cable survey system according to claim 1, which is characterized in that the cell phone software unit using Java or
Objective-C language developments are separately operable on the mobile phone for supporting Android and iOS operating systems, including showing test waves
Shape, sectional drawing output test information, the function of remote control optical cable survey system.
5. optical cable survey system according to claim 1, which is characterized in that the optical signal generating unit drives including constant current
Dynamic model block, temperature control modules and laser are generated by central processing control unit control constant-current driven module driving laser
Detect optical signal.
6. optical cable survey system according to claim 1, which is characterized in that the optical interference circuit unit is molded including optocoupler
Block A, optical coupler module B and time delay module, detection optical signal injects optical cable to be measured after optical interference circuit unit, anti-in optical fiber connector
Optical interference circuit is returned to after penetrating, and generates multipath light signal, generation interference, is received by signal processing unit between them, when
During the disturbance vibrated of any one place of optical cable, the optical signal phase propagated wherein changes, and causes final reflected light signal
Optical power change.
7. optical cable survey system according to claim 1, which is characterized in that the signal processing unit includes photoelectricity
Detector and filter amplification circuit, the optical signal returned from optical cable to be measured generate electric signal after being received by a photoelectric detector, pass through
It is exported after filter amplifying processing, the variation of luminous power can also be captured by photodetector.
8. a kind of optical cable census method using optical cable survey system described in claim 1 to 7 any one, which is characterized in that
Include the following steps：
1) optical cable to be measured in optical cable survey system connection computer room, emission detection optical signal；
2) after optical cable survey system receives the optical signal that optical cable to be measured returns, image, audio, wireless three kinds of letters are processed into
Number；
3) the audio visual signal output unit output waveform and sound that image and audio signal pass through optical cable survey system；
4) wireless signal is exported by mobile network communication unit, and cell phone software list is sent to by server data relay unit
Member is exported by being converted into image after cell phone software cell processing；
5) using the observation of cell phone software unit and same waveform image on the liquid crystal touch display screen of optical cable survey system, pass through
Tap optical cable to be measured, by observing whether waveform image changes, so that it is determined that current optical cable whether be required lookup optical cable.
9. optical cable census method according to claim 8, which is characterized in that the wireless signal uses specific data packet
Form, content include optical information, the status information of current optical cable survey system and the optical cable survey system that optical cable to be measured returns
Matched identity information is identified between cell phone software unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647892.9A CN105375981B (en) | 2015-10-09 | 2015-10-09 | A kind of optical cable survey system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647892.9A CN105375981B (en) | 2015-10-09 | 2015-10-09 | A kind of optical cable survey system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105375981A CN105375981A (en) | 2016-03-02 |
| CN105375981B true CN105375981B (en) | 2018-06-29 |
Family
ID=55377823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510647892.9A Active CN105375981B (en) | 2015-10-09 | 2015-10-09 | A kind of optical cable survey system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105375981B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888286A (en) * | 2017-12-08 | 2018-04-06 | 河南宏博测控技术有限公司 | A kind of Cable's Fault point detecting method |
| CN108337044B (en) * | 2017-12-22 | 2020-05-08 | 武汉光谷互连科技有限公司 | High-sensitivity optical cable census device and method based on white light interference |
| CN109813525B (en) * | 2018-12-29 | 2021-02-12 | 武汉光谷互连科技有限公司 | Optical cable identification device and identification method |
| CN110132400B (en) * | 2019-05-31 | 2021-08-27 | 海南电网有限责任公司信息通信分公司 | Optical cable general investigation system and method under complex background environment |
| CN111504607A (en) * | 2020-05-12 | 2020-08-07 | 中铁九局集团电务工程有限公司 | Method for searching optical cable breakpoint by using acoustic principle |
| CN114001926A (en) * | 2021-12-01 | 2022-02-01 | 上海大维通信技术有限公司 | Optical cable census analyzer and analog signal processing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767956A (en) * | 1995-07-24 | 1998-06-16 | Advantest Corp. | Backward brillouin scattering optical time domain reflectometry |
| CN102098100A (en) * | 2010-12-29 | 2011-06-15 | 武汉光迅科技股份有限公司 | Method for automatically monitoring and maintaining optical cable |
| CN203399114U (en) * | 2013-05-03 | 2014-01-15 | (株)韩国一诺仪器株式会社 | Optical cable general detection device with wireless communication function |
| CN104243021A (en) * | 2014-09-29 | 2014-12-24 | 国家电网公司 | Electric power communication optical cable patrol inspection management system |
| CN204046607U (en) * | 2014-07-29 | 2014-12-24 | 国家电网公司 | A kind of Cable's Fault monitoring system |
-
2015
- 2015-10-09 CN CN201510647892.9A patent/CN105375981B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767956A (en) * | 1995-07-24 | 1998-06-16 | Advantest Corp. | Backward brillouin scattering optical time domain reflectometry |
| CN102098100A (en) * | 2010-12-29 | 2011-06-15 | 武汉光迅科技股份有限公司 | Method for automatically monitoring and maintaining optical cable |
| CN203399114U (en) * | 2013-05-03 | 2014-01-15 | (株)韩国一诺仪器株式会社 | Optical cable general detection device with wireless communication function |
| CN204046607U (en) * | 2014-07-29 | 2014-12-24 | 国家电网公司 | A kind of Cable's Fault monitoring system |
| CN104243021A (en) * | 2014-09-29 | 2014-12-24 | 国家电网公司 | Electric power communication optical cable patrol inspection management system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105375981A (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105375981B (en) | A kind of optical cable survey system and method | |
| WO2017118149A1 (en) | Method and apparatus for rapidly collecting fibre interconnection information | |
| RU2013132450A (en) | OPTICAL NETWORK COMMUNICATION SYSTEM WITH A RECEIVER AND TRANSMITTER OF OPTICAL LINEAR TERMINAL AND METHOD OF ITS OPERATION | |
| CN106482932A (en) | The test device of optical fiber bidirectional loss, method of testing and the means of communication | |
| JP4064350B2 (en) | Method for connecting and testing interfaces for CWDM fiber optic systems | |
| CN206164535U (en) | OSC optical module with OTDR function | |
| CN104913840A (en) | One-cable optical fiber vibration alarm system | |
| CN111683021A (en) | Multi-protocol terminal with double-path redundant output for switch | |
| CN104144014A (en) | Method, device and system for detecting optical fiber faults | |
| CN209590642U (en) | The conversion of underwater robot information and processing system | |
| CN104348540B (en) | Automatic monitoring and protection system of optical-fiber line | |
| US6522434B1 (en) | System and method for determining optical loss characteristics of optical fibers in an optical fiber network | |
| CN207625562U (en) | Signal transmssion line and signal transmission system | |
| CN102937734A (en) | Optical network unit three-direction optical assembly with optical time domain signal reflection function | |
| CN202748503U (en) | Single fiber bi-directional optical device with connector | |
| CN110082582A (en) | A kind of current sensor based on fibre-optic transmission system (FOTS) | |
| CN214125291U (en) | Performance monitoring device and system of optical fiber network | |
| CN101651493B (en) | Device and system for remotely controlling and testing fiber core | |
| CN209689740U (en) | A kind of distribution type fiber-optic vibration measuring system | |
| JP2014197788A (en) | Submarine optical cable system, monitoring information aggregation type submarine device, system monitoring method, and monitoring program thereof | |
| CN102111217B (en) | Alarm monitoring device for synchronous digital hierarchy (SDH) equipment | |
| CN203675227U (en) | Video monitoring tester | |
| CN106027143A (en) | Optical fiber remote monitoring system | |
| CN205541413U (en) | Data transmission device of transformer substation | |
| CN207235017U (en) | Intelligent wiring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |