CN1852056A - Optical cable network monitoring system and method - Google Patents
Optical cable network monitoring system and method Download PDFInfo
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- CN1852056A CN1852056A CNA2006100813002A CN200610081300A CN1852056A CN 1852056 A CN1852056 A CN 1852056A CN A2006100813002 A CNA2006100813002 A CN A2006100813002A CN 200610081300 A CN200610081300 A CN 200610081300A CN 1852056 A CN1852056 A CN 1852056A
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Abstract
This invention relates to a monitor system and a method for an optical cable network including a monitor center and a circuit monitor sub-system, in which, the monitor center is composed of a communication terminal and a display management device, the circuit monitor sub-system is composed of a signal transmitting device, a signal receiving device, a monitor terminal and at least a relay monitor, the method includes: 1, dividing the optical cable network into several monitor circuits, each of which is divided into several monitor sections, 2, a signal sending device is set at the circuit starting end, a signal receiving device and a monitor terminal are set at the end and relay monitors are set at other ends of the monitor sections, 3, the signal sending device sends the monitor signals, the relay monitors transmit the signals after connecting the monitor sections, 4, the signal receiving device and the monitor terminal receive the on-off information sent by the last relay monitor and transmit it to the monitor center via the communication network, 5, the monitor center receives, records data and judge the on-off situation if the monitored circuits.
Description
Technical field
The present invention relates to a kind of communication line monitoring system, be meant a kind of optical cable network monitoring system and method especially.Comprise a fiber cable network monitoring center and at least one path monitoring subsystem.Wherein, monitoring center forms by the communication terminal of the data that receive each monitoring terminal transmission with the display management device that the data of communication terminal output are handled; The path monitoring subsystem comprises sender unit, signal receiving device has omnidistance break-make information processing and deal with data is sent to the monitoring terminal of communication network and at least one and can receive each monitoring section break-make information before this monitoring section, add this monitoring section break-make information and with the relaying monitor of break-make information to next monitoring section transmission.Its method is: fiber cable network is divided into some Monitoring Lines, and every Monitoring Line is divided into several monitoring sections; The starting point signalization dispensing device of circuit is not held signalization receiving system and monitoring terminal, and other end points of monitoring section respectively is provided with a relaying monitor; The relaying monitor transmits rearward with the break-make information of relay mode with this monitoring section and each monitoring section of the place ahead.After each monitoring section break-make information processing of the monitored circuit that signal receiving device and monitoring terminal will receive, send to monitoring center by communication network.After the communication terminal of monitoring center receives the break-make information data of each path monitoring terminal, by the reception of display management device, record data and judge the circuit on-off situation, show the break-make situation of the monitored circuit of each bar by display device.
Background technology
The lightguide cable link message capacity is big, repeater span is long, and optical fiber communication is the widest wire communication mode of using at present, and lightguide cable link is crisscross, has formed huge fiber cable network.In the fiber cable network maintenance management, circuit is implemented monitoring and localization of fault in real time, be to guarantee the lightguide cable link reliability service and in time rob logical important assurance.At present, fiber cable network and lightguide cable link monitoring mainly contain four kinds of modes: a kind of is that the monitoring system that adopts transmission equipment to carry is monitored current use line, equipment alarm after line interruption, the attendant uses OTDR (optical time domain reflectometer) to judge the interruption of optical cables point again; Though this mode can realize the monitoring to fiber cable network, only be applicable to the equipment of same producer and the circuit that physically links to each other, can't monitor the circuit that does not have erection unit and temporarily do not have to use; Judge the fiber distance of the point of interruption by OTDR, can only infer between the geographic region of the point of interruption apart from the monitoring point.A kind of is to be provided with luminous in the monitoring point and the receipts electro-optical device, utilizes surplus fibre at remote loopback, judges lightguide cable link break-make situation by the receipts luminous power of monitoring loopback, if find that fiber break is again with OTDR judgement interruption of optical cables point; This mode can only be monitored the situation of a certain section circuit, can not realize network monitoring, between the geographic region of the point of interruption also is to be inferred by the point of interruption fiber distance of measuring.A kind of is to monitor surplus fibre with OTDR circuit is monitored, and determine the interruption of optical cables position by OTDR, and as disclosed lightguide cable link real-time monitoring system and method thereof in the application for a patent for invention 03116282.7, this mode cost height, useful life is short, can't realize network monitor.A kind of is that monitoring center and monitoring station are set, between connect by communication network, the monitoring station is provided with optical signal generator and optical power detector, utilize surplus fibre with the light signal loopback to optical power detector, judge optical fiber break-make situation and information sent to monitoring center; Though this mode can realize many path monitorings, the monitoring system cost is very high, and it is high particularly to monitor long distance line (as more than 100 kilometers) cost; Simultaneously, be subjected to the restriction of sending and receiving optical device performance, can't monitor the circuit more than 150 kilometers.As seen monitoring equipment cost height, fault section location is inaccurate, network monitor is realized difficulty, can't monitor long distance line, occupation mode is dumb, high to power reguirements be the subject matter that existing optical cable network monitoring system exists.
Summary of the invention
Propose a kind of optical cable network monitoring system and method in order to overcome the prior art weak point, form by monitoring center and path monitoring subsystem.Wherein, the path monitoring subsystem is by sender unit, signal receiving device has the break-make information processing and deal with data is sent to the monitoring terminal of communication network and at least one can receive the break-make information of each monitoring section of the place ahead, the relaying monitor composition that adds this monitoring section break-make information and break-make information is sent downwards; Monitoring center forms by the communication terminal of the data that receive the monitoring terminal transmission with to the display management device that data are handled, managed and show.
Its implementation comprises the steps:
1) fiber cable network is divided into some Monitoring Lines by zone and structure, every Monitoring Line is divided into several monitoring sections.
2) every Monitoring Line initiating terminal is established sender unit, and end is not established signal receiving device and monitoring terminal, and other end points of monitoring section is established the relaying monitor; Relaying monitor and signal receiving device are monitored the break-make situation of the adjacent monitoring section in the place ahead respectively.
3) sender unit is controlled by timer, regularly sends the monitor signal of certain hour length to first relaying monitor, enters holding state then with saves energy.
4) the relaying monitor transmits downwards with the break-make information of relay mode with this monitoring section and each monitoring section of the place ahead, and its method is:
Can the signal that send in relaying monitor monitors the place ahead according to receiving that signal judges the break-make situation of this monitoring section and each monitoring section of the place ahead, and transmit break-make information downwards; If in the time of setting, receive signal, keep the break-make information of each monitoring section of the place ahead, and the break-make information of this monitoring section is changed to logical, to the transmission of next one monitoring section.If in the time that timer is set, do not receive signal, this monitoring section interruption of optical cables then is described, each break-make information setting of monitoring section and this monitoring section sends to next monitoring section for breaking with the place ahead.The relaying monitor enters holding state with saves energy after finishing information processing, transmission, starts the next work period by input signal or timer.
Can 5) signal receiving device receives the monitor signal that last relaying monitor sends, according to receiving that signal judges the break-make situation of this monitoring section and each monitoring of the place ahead section.If in the time of setting, receive signal, keep the break-make information of each monitoring section of the place ahead, and the break-make information of this monitoring section is changed to logical, send monitoring terminal to; If in the time that timer is set, do not receive signal, this monitoring section interruption of optical cables then is described, each break-make information setting of monitoring section and this monitoring section sends monitoring terminal to for breaking with the place ahead.After signal receiving device is finished message pick-up, processing, transmission, enter holding state, start the next work period by input signal or timer with saves energy.
6) monitoring terminal is with the break-make information of signal receiving device transmission, and data format in accordance with regulations sends to monitoring center by communication network after handling.
7) communication terminal of monitoring center receives the monitoring information data that each monitoring terminal sends in the fiber cable network, delivers to the display management device.
8) reception of display management device, record data and judge the circuit on-off situation show the break-make situation of the monitored circuit of each bar by display device.
The present invention is divided into Monitoring Line with fiber cable network and utilizes communication network transmission of monitoring data, can realize the monitoring to whole fiber cable network flexibly; Lightguide cable link is divided into short-range monitoring section, had both reduced requirement, also can accurately determine between the geographic region of Cable's Fault point components and parts; Use discrete mode that circuit is monitored, both satisfied actual needs, also can significantly reduce power consumption, simplify supply power mode, prolong the power-on time of power supply; By the refile of relaying monitor, can realize the monitoring of long distance line.Therefore, the present invention has very significantly advantage than prior art.
Description of drawings
Fig. 1 is the sender unit theory diagram.
Fig. 2 is a relaying monitor theory diagram.
Fig. 3 is the signal receiving device theory diagram.
Fig. 4 is each Monitoring Line and a monitoring section division schematic diagram in the fiber cable network; Among the figure fiber cable network is divided into n bar Monitoring Line, every lightguide cable link is divided into several monitoring sections.
Fig. 5 is sender unit in the fiber cable network, relaying monitor, signal receiving device and monitoring terminal, and the communication terminal of monitoring center and display management device are provided with schematic diagram.
Fig. 6 be in the Monitoring Line sender unit, relaying monitor, signal receiving device and monitoring terminal schematic diagram is set.
Fig. 7 is a regularly length schematic diagram of each timer.Wherein (a) expression sender unit timing length (b1) is represented regularly length of first relaying monitor, (bm) represents regularly length of last relaying monitor, (c) represents regularly length of signal receiving device.
Fig. 8 is sender unit, relaying monitor, signal receiving device work and holding state sequential chart.(a) represent monitored the circuit just often work and the holding state sequential chart of sender unit, each relaying monitor, signal receiving device, when (b) the 10th monitoring section of expression interrupted, relaying monitor thereafter, the work of signal receiving device and holding state sequential chart.
Fig. 9 is when using optical fiber as the monitor signal transmission line, the installation connection diagram of relaying monitor in cable splice closure.
Figure 10 is when using the optical cable inner wire as the monitor signal transmission line, the installation connection diagram of relaying monitor in cable splice closure.
Embodiment
Specify the realization principle of sender unit 101, relaying monitor 102 and signal receiving device 103 below in conjunction with Fig. 1 to Fig. 3:
Please refer to the schematic block circuit diagram of Fig. 1 for sender unit 101.Sender unit 101 produces circuit 201, signalling circuit 202, timer 2 03 and power supply circuits 204 by the break-make sign and forms.The break-make sign produces circuit 201 in working order the time, produces the break-make identity code that is used for representing each monitoring section on off operating mode of circuit; Signalling circuit 202 with the break-make identity code modulate with power amplification after, send to relaying monitor 102; After monitor signal was sent completely, the break-make sign produced circuit 201 output reset signals, control timer 203 reclockings.Timer 2 03 repeats to produce working signal and standby signal according to the time cycle of setting, and makes sender unit 101 be in work and holding state periodically, to reduce the consumption to electric energy.
Please refer to the schematic block circuit diagram of Fig. 2 for relaying monitor 102.Relaying monitor 102 produces circuit 201, timer 2 03 and power supply circuits 204 by collection of letters circuit 205, break-make sign treatment circuit 206, signalling circuit 202, break-make sign and forms.
Receive the monitor signal of last monitoring section transmission when collection of letters circuit 205 after, break-make identity code in output services start enable signal and the monitor signal, the operating state enabling signal is used for break-make sign treatment circuit 206 and signalling circuit 202 are converted to operating state by holding state, the break-make identity code is delivered to break-make sign treatment circuit 206, each monitored the break-make identity code state of section before break-make sign treatment circuit 206 kept this monitoring section, this monitoring segment mark sign indicating number is changed to logical, delivers to signalling circuit 202;
If collection of letters circuit 205 is no-output in the time that timer 2 03 is set, timer 2 03 output control signal, starting the break-make sign produces circuit 201, break-make sign treatment circuit 206 and signalling circuit 202 and is converted to operating state by holding state, the break-make sign produces circuit 201 and produces corresponding break-make identity code, substitute the break-make identity code that collection of letters circuit 205 is not received, deliver to break-make sign treatment circuit 206, break-make sign treatment circuit 206 is changed to the break-make identity code of this monitoring section and each monitoring of the place ahead section disconnected, delivers to signalling circuit 202; Signalling circuit 202 with the break-make identity code modulate with power amplification after, send to next monitoring section.
After monitor signal is sent completely, break-make sign treatment circuit 206 output reset signals, control timer 203 reclockings.Timer 2 03 repeats to produce working signal and standby signal according to the time cycle of setting, and control relaying monitor 102 is in work and holding state periodically, to reduce the consumption to electric energy.
Please refer to the schematic block circuit diagram of Fig. 3 for signal receiving device 103.Signal receiving device 103 produces circuit 201, timer 2 03 and power supply circuits 204 by collection of letters circuit 205, break-make sign treatment circuit 206, break-make sign and forms.Collection of letters circuit 205, break-make sign treatment circuit 206, break-make sign produce the function of circuit 210, timer 2 03 and power supply circuits 204 with relaying monitor 102.
Implementation method of the present invention is:
(1) please refer to Fig. 4, Fig. 5, structure and geographic area according to monitored fiber cable network are divided into some Monitoring Lines with fiber cable network.Every Monitoring Line is divided into some monitoring sections, and the length of monitoring section can require to select according to monitoring accuracy, is generally the 2-10 kilometer, too short relaying monitor 102 quantity that then need increase, cost increases, and oversize then monitoring accuracy diminishes, to components and parts and the also corresponding increase of power requirement.
Every Monitoring Line initiating terminal signalization dispensing device 101, do not hold signalization receiving system 103 and monitoring terminal 104, other end points of monitoring section is provided with relaying monitor 102, and relaying monitor and signal receiving device are monitored the break-make situation of the adjacent monitoring section in the place ahead respectively.Monitoring center is provided with communication terminal 105 and display management device 106.
(2) please refer to Fig. 6, hypothesis is a monitoring section for per 3 kilometers in this example, and as if 120 kilometers of Monitoring Line 1 total lengths, then whole process is divided into 40 monitoring sections altogether.Starting point signalization dispensing device 101 at circuit 1, do not hold signalization receiving system 103 and monitoring terminal 104, other monitoring section end points respectively is provided with a relaying monitor 102, establishes 39 relaying monitors 102 altogether, is responsible for the break-make situation of the adjacent last monitoring section of monitoring.Sender unit 101, signal receiving device 103, relaying monitor 102 all can be installed in the cable splice closure, and when having ready conditions, sender unit 101, signal receiving device 103 also can be installed in the machine room.
(3) sender unit 101 regularly sends the monitor signal that comprises the break-make identity code to first relaying monitor 102.The supposition per minute carries out a break-make monitoring to circuit in this example, and then timer 2 03 is pressed 60 seconds time cycle, produces working signal and standby signal, and the break-make sign produces circuit 201 and signalling circuit 202 is in work and holding state periodically to control.The break-make sign produces circuit 201 when in running order, according to the figure place of setting (in this example more than or equal to 40), produce corresponding break-make identity code, and all be changed to disconnected state, send to first relaying monitor 102 by signalling circuit 202 modulation amplification back; After monitor signal was sent completely, the break-make sign produced circuit 201 and provides reset signal to timer 2 03, and timer 2 03 restarts timing, enter next timing cycle, export standby signal simultaneously, except that timer 2 03, other circuit enters the low-power consumption standby state to save electric energy.After timer 2 03 timing to 60 second, output services signal again, enabling signal dispensing device 101 repeats the transmitting supervisory signals.
(4) please refer to Fig. 7, relaying monitor 102, the effect of the timer 2 03 of signal receiving device 103 is identical with the timer 2 03 of sender unit 101, generation work, the holding state control signal, the timing length of timer 2 03 increases successively along monitoring direction that (the timing length as sender unit 101 timer 2s 03 is 60 seconds, then the timing length of first relaying monitor 102 is 61 seconds, the timing length of second relaying monitor 102 is 62 seconds, the timing length of the 39th relaying monitor 102 is 99 seconds, and the timing length of signal receiving device 103 is 100 seconds).
(5) after the collection of letters circuit 205 of relaying monitor 102 is received the monitor signal of sending in the place ahead, the output enabling signal activates break-make sign treatment circuit 206 and signalling circuit 202, transfer operating state to by holding state, and the break-make Information sign sign indicating number of output reception, break-make sign treatment circuit 206 keeps each monitoring section break-make identity code state of the place ahead and this monitoring segment mark sign indicating number is changed to logical state, is sent backward by signalling circuit 202.If in the timing length of setting, do not receive the monitor signal of previous monitoring section, this monitoring fiber break (because surpass time of arrival (toa) 1 second) of breaking is described, then timer 2 03 is exported enabling signal, the break-make sign is produced circuit 201, with break-make sign treatment circuit 206, signalling circuit 202 is converted to operating state by holding state, the break-make sign produces circuit 201 and produces new break-make identity code (with sender unit 101), by break-make sign treatment circuit 206 the break-make sign of this monitoring section and all monitoring sections of the place ahead is changed to disconnected state, then by 202 transmissions of signalling circuit.Please refer to Fig. 8, (a) represent monitored the circuit just often work and the holding state sequential chart of sender unit, each relaying monitor, signal receiving device, when (b) the 10th monitoring section of expression interrupted, the work and the holding state sequential chart of this relaying monitor and relaying monitor thereafter, signal receiving device.
After monitor signal was sent completely, break-make sign treatment circuit 206 provided reset signal to timer 2 03, and timer 2 03 restarts timing, enter next timing cycle, export standby signal simultaneously, except that timer 2 03, other circuit enters the low-power consumption standby state to save electric energy.
(6) after the collection of letters circuit 205 of signal receiving device 103 is received the monitor signal of last relaying monitor 102 of the place ahead, the output enabling signal activates break-make sign treatment circuit 206, transfer operating state to by holding state, and section break-make information is respectively monitored in the place ahead of receiving deliver to break-make sign treatment circuit 206, break-make sign treatment circuit 206 is changed to logical state with this monitoring section break-make sign, by the circuit that links to each other with monitoring terminal 104 the break-make identity code is delivered to monitoring terminal 104.
If in the timing length of setting (100 seconds), do not receive the monitor signal (overtime 1 second) of last relaying monitor 102, then timer 2 03 is exported enabling signal, the break-make sign is produced circuit 201, it is operating state that break-make sign treatment circuit 206 is started by holding state, produce circuit 201 by the break-make sign and produce new break-make identity code (with sender unit 101 and relaying monitor 102), break-make sign treatment circuit 206 is changed to disconnected state with all monitoring section break-make signs, by the circuit that links to each other with monitoring terminal 104 the break-make identity code is delivered to monitoring terminal 104.
After the break-make identity code was sent completely, break-make sign treatment circuit 206 provided reset signal to timer 2 03, and timer 2 03 restarts timing, enter next timing cycle, export standby signal simultaneously, except that timer 2 03, other circuit enters the low-power consumption standby state to save electric energy.
(7) monitoring terminal 104 is processed into the acceptable data of monitoring center with the break-make identity code by rendezvous protocol, sends to communication network.
(8) communication terminal 105 of Surveillance center receives the data that comprise each bar Monitoring Line break-make information that transmit from communication network in real time, and data are delivered to display management device 106,106 receptions of display management device, record data are also judged the circuit on-off situation, show the break-make situation of each bar circuit of whole fiber cable network by display device.
The mode of installing and using of relaying monitor of the present invention is:
Please refer to Fig. 9, when the path monitoring subsystem is used optical fiber 403 as the monitor signal transmission line, relaying monitor 102 can be installed in the cable splice closure 401, use the optical fiber 403 in the optical cable 402 to transmit monitor signal, collection of letters circuit 205, signalling circuit 202 link to each other with the optical fiber 403 of the two sections optical cables 402 in front and back respectively, and the signal of transmission is a light signal.
Please refer to Figure 10, when the path monitoring subsystem is used the optical cable inner wire as the monitor signal transmission line, relaying monitor 102 can be installed in the cable splice closure 401, utilize the inner wire 404 of optical cable 402 to transmit monitor signal, collection of letters circuit 205, signalling circuit 202 link to each other with the inner wire 404 of the two sections optical cables 402 in front and back respectively, and the signal of transmission is the signal of telecommunication.
Claims (10)
1, a kind of optical cable network monitoring system, comprise monitoring center and path monitoring subsystem, it is characterized in that: the path monitoring subsystem is by sender unit, signal receiving device has the break-make information processing function and deal with data is sent to the monitoring terminal of communication network and the relaying monitor composition that at least one can receive this monitoring section circuit on-off information that last monitoring section sends, add this monitoring section break-make information and break-make information is sent backward.
2, path monitoring subsystem according to claim 1 is characterized in that the path monitoring subsystem is discontinuous to the monitoring of circuit, has work and standby two states.
3, path monitoring subsystem according to claim 1 is characterized in that the monitor signal of path monitoring subsystem transmission includes the break-make identity code of each monitoring section break-make information of expression.
4, path monitoring subsystem according to claim 1 is characterized in that the work of sender unit and holding state controlled by timer, and the work of relaying monitor and signal receiving device and holding state are controlled jointly by input signal and timer.
5, path monitoring subsystem according to claim 1, when it is characterized in that no monitor signal is imported in the timing length of timer, relaying monitor, signal receiving device produce monitor signal voluntarily and on off operating mode are added in the break-make information.
6, sender unit according to claim 1 is characterized in that sender unit comprises:
The break-make sign produces circuit, produces timer reset signal and the break-make identity code that is used for representing each monitoring section on off operating mode of circuit;
The signalling circuit, with the break-make identity code modulate with power amplification after, send to the relaying monitor;
Timer according to the time cycle of setting, produces working signal and standby signal, and the control signal dispensing device is in work and holding state periodically;
Power supply circuits.
7, relaying monitor according to claim 1 is characterized in that the relaying monitor comprises:
Collection of letters circuit receives monitor signal, the break-make identity code that output services start enable signal and monitor signal comprise;
Break-make sign treatment circuit has or not the output of break-make identity code according to collection of letters circuit, judges the break-make situation of this monitoring section, and break-make information is write in the break-make identity code, delivers to the signalling circuit; Output timer reset signal after finishing;
The signalling circuit, with the break-make identity code modulate with power amplification after, send to next monitoring section;
The break-make sign produces circuit, is controlled by timer, after timer output produces break-make identity code signal, produces corresponding break-make identity code, substitutes the break-make identity code that collection of letters circuit is not received;
Timer according to the time cycle of setting, produces standby signal and working signal, controls the relaying monitor jointly with collection of letters circuit and is in work and holding state periodically;
Power supply circuits.
8, signal receiving device according to claim 1 is characterized in that signal receiving device comprises:
Collection of letters circuit receives monitor signal, the break-make identity code that output services start enable signal and monitor signal comprise;
Break-make sign treatment circuit has or not the output of break-make identity code according to collection of letters circuit, judges the break-make situation of this monitoring section, and break-make information is write in the break-make identity code, delivers to monitoring terminal; Output timer reset signal after finishing;
The break-make sign produces circuit, is controlled by timer, after timer output produces break-make identity code signal, produces corresponding break-make identity code, substitutes the break-make identity code that collection of letters circuit is not received;
Timer according to the time cycle of setting, produces standby signal and working signal, is in work and holding state periodically with the common control signal receiving system of collection of letters circuit;
Power supply circuits.
9, a kind of optical cable network monitoring system method is characterized in that comprising the steps:
(1) fiber cable network is divided into some Monitoring Lines, every Monitoring Line is divided into several monitoring sections;
(2) every Monitoring Line initiating terminal is established sender unit, and end is not established signal receiving device and monitoring terminal, and other end points of monitoring section is established the relaying monitor;
(3) sender unit transmitting supervisory signal, the relaying monitor transmits each monitoring section break-make information in the relay mode;
(4) signal receiving device and monitoring terminal receive the break-make information that last relaying monitor sends, and handle the back and send to monitoring center by communication network;
(5) communication terminal of monitoring center receives the break-make information data that each monitoring terminal sends, and delivers to the display management device;
(6) reception of display management device, record data and judge the break-make situation of the monitored circuit of each bar in the whole fiber cable network.
10, relay mode according to claim 9 transmits each monitoring section break-make information, and its method is:
(1) monitor signal sent of relaying monitor monitors the place ahead if receive monitor signal in the time of setting, keeps the break-make information of other monitoring section in the monitor signal, the break-make information of this monitoring section is changed to logical, to the transmission of next one monitoring section;
(2) if in the time of setting, do not receive monitor signal, this monitoring section interruption of optical cables then is described, the relaying monitor produces break-make information voluntarily, and each break-make information setting of monitoring section and this monitoring section transmits to next monitoring section for breaking with the place ahead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100813002A CN1852056A (en) | 2006-05-30 | 2006-05-30 | Optical cable network monitoring system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100813002A CN1852056A (en) | 2006-05-30 | 2006-05-30 | Optical cable network monitoring system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546053A (en) * | 2011-12-20 | 2012-07-04 | 中国人民解放军海军工程大学 | On-line automatic monitoring recording system and method of short-wave transmitter |
| CN102177440B (en) * | 2008-10-27 | 2013-11-06 | 西门子公司 | Fault location in electrical power supply grids using the distance protection principle |
| CN111817777A (en) * | 2020-07-23 | 2020-10-23 | 广州优加智联技术有限公司 | Idle optical fiber resource on-line monitoring system |
| CN113783190A (en) * | 2021-09-07 | 2021-12-10 | 杭州天宽科技有限公司 | Power information network data island monitoring system |
-
2006
- 2006-05-30 CN CNA2006100813002A patent/CN1852056A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177440B (en) * | 2008-10-27 | 2013-11-06 | 西门子公司 | Fault location in electrical power supply grids using the distance protection principle |
| CN102546053A (en) * | 2011-12-20 | 2012-07-04 | 中国人民解放军海军工程大学 | On-line automatic monitoring recording system and method of short-wave transmitter |
| CN102546053B (en) * | 2011-12-20 | 2014-06-18 | 中国人民解放军海军工程大学 | On-line automatic monitoring recording system and method of short-wave transmitter |
| CN111817777A (en) * | 2020-07-23 | 2020-10-23 | 广州优加智联技术有限公司 | Idle optical fiber resource on-line monitoring system |
| CN113783190A (en) * | 2021-09-07 | 2021-12-10 | 杭州天宽科技有限公司 | Power information network data island monitoring system |
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Application publication date: 20061025 |