TWI355813B - An intelligent optical network monitoring system - Google Patents

Description

1355813 IX. Description of the invention: [Technical field of invention] The present invention is an intelligent optical network monitoring system, which combines the advantages of an optical time-domain reflectometer (OTDR) and a Cheetah monitoring system. Monitor and automatically measure fiber network outages 24 hours a day to contact service personnel and record when the wire is broken and repaired. [Prior Art]

The prior art is shown in Figure 1 for the OTDR fiber-optic cable network monitoring system and Figure 2 for the Cheetah fiber-optic cable monitoring system. The OTDR fiber-optic cable TV network monitoring system places the 〇TDR 1〇1 in the head-end room as the monitoring diaphragm No. 5, and the OTDR 101 itself has a laser source wavelength of 1310 nm or 1650 nm. The carrier optical signal (wavelength 1550 nm) carrying the cable multi-channel signal 105 is sent by a cable analog transmitter, Optical Transmitter 104, using a 13HV1550 or 1550/1650 splitter multiplexer 102 (WDM MUX). The carrier optical signal of the optical transmitter 104 is transmitted through an optical amplifier 103 (Erbium-Doped Fiber Amplifier, EDFA) and a monitor optical signal via a standard single mode fiber (SMF), and 1310 is used at the light drop point. The /1550 or 1550/1650 demultiplexer 110 (w〇M DEMUX) filters out the 1550 nm wavelength optical signal and finally uses the optical receiver 107 (〇pticai Receiver) to convert the optical signal into radio frequency (RF). The signal is received by the user 1〇8. The optical signal emitted by 〇tdr ιοί will be reflected back to the head end of the multiplexer 110 for reception by the OTDR 101. The result presented by 〇tdR 101 can be judged as shown in Fig. 6a and Fig. 6b. Is there a problem with disconnection? 〇TDR 101 uses a laser light wavelength that is similar to the wavelength of the transmitted signal when it is used. It interferes with the signal wavelength, causing deterioration of video quality. Therefore, it cannot monitor continuously for 24 hours, and can only monitor the fiber without timing. Is the network working properly?

The Cheetah fiber-optic cable TV network monitoring system is equipped with a transponder receiver 202 (Transponder Receiver) in the head-end room. In addition, a response 1355813 209 (Transponder) is installed at the position of the light drop point to be monitored, and the most important The point is that the network itself must be a two-way network system to have a solution _ light drop response ^ (four) control signal. The signal monitored by the network normal router 209 is transmitted back to the head end by the uplink signal (5~3〇MHz). If the receiver 2G2 can pick up the uplink backhaul signal, the wire shows normal operation. When the fiber network is disconnected, the headend response receiver 2G2 does not receive the far-end transponder 2G9, which means the single-mode fiber. 21〇After the broken or monitored light drop point has a problem... The cost of controlling 10 light drop points is about one million yuan, and the system operator’s light cast is ^2, ^ That is to say, if you want to monitor the quality of the entire network, the required funds, the spoon is a 'four million 疋' is a very heavy burden for the system operators. SUMMARY OF THE INVENTION The intelligent optical network monitoring system of the present invention comprises: a transmitting end ((four) gamma), a receiving end (User), and an inter-terminal transmission_f. The transmitting end includes a signal source, a mobile phone automatic weaving system = an OTDR system, a _ signal receiver, and a connection (4) including a connection (4), and the receiving and receiving end of the receiving system will be returned due to whether the signal source is received or not. Transmission system, the signal sent back to the transmitting end of the backhaul system is returned by the == signal.

The operation of the measurement system. H-shaped OTDR

QrR妓Cheetah's inspections are all based on the miscellaneous stomach in the headroom of the machine room. The monitoring personnel will inform the network officer to send the dispatcher. Then = μ s where the person can know the fiber network disconnection at the first time. The different relationship between the mobile phone number and the phone call display function can be attached to each address of the optical address. Therefore, the network administrators showed off from the mobile phone: ==T questions, and then cooperate. The job of the instant two = full level of the remaining, so you can go to the repair in the shortest __ red-shift personnel.

[Embodiment] Referring to FIG. 3, the intelligent optical network monitoring system of the present invention is divided into three parts, including a transmitting cake, a receiving end and a transmission medium. In this example, a single-mode optical fiber 31() is used as a transmission medium. The transmitting end converts the cable multi-channel signal 3〇1 into an optical signal via the optical transmitter 3〇2, and then enters the single-mode optical fiber 31 through the splitting multiplexer 303 to transmit to the receiving end. The splitter 303 of the receiving end transmits the optical signal of 1550 nm to the optical receiver 311 of the receiving end, and the optical receiver 3 ι converts the optical signal into the electrical signal available to the user and sends a signal to the optical transmitter 312 as the erected transmitting. Out - wavelength 131Gnm _ _ _ _ hairpin. (3) The Gnm optical signal passes through the splitter 303 and enters the single mode fiber 310 and is transmitted back to the head end. The head end splitter multiplexer 3〇3 transmits (4) (10) to the optical receiver 3〇5 of the transmitting end through the light ageing device 309, and the light receiving Machine 3〇5 has received the return to the machine automatically pro (4) circuit 3G4 and the tree domain reflectometer control soap fiber 310 has a breakpoint, then the optical receiver _ method receives, t, therefore will drive the phone automatic dial control loop 304 dials the mobile phone to notify the relevant person that the circuit 306 will also start 0 and 3G7 to measure, - brain 3 〇 8 silk Jing children. Root view _ « « system _, can be judged OTDR3 〇 7 in the state of standby when the fiber network is normal, when the network is disconnected ^ is in the state of 〇 N 'in the flat f does not interfere with the transmission Video signal quality: . For 24 hours of real-time monitoring. The traditional 〇 监控 监控 纽 ( ( ( ( ( ( ( ( ( ( ( % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % Whether it is a tree branch or a star network architecture machine ====== ^ similar to the addressing function, the system can be applied to the tree branch (Figure 4) / star (Figure 5) network ^ frame : In terms of cost expenditure, 'no need for high-priced transponders and response receivers, plus small green monitoring can not be achieved with feet, only mosquitoes turn silk, so the cost ratio. Her fiber has a simple description] Figure 1 : OTDR Fiber Cable TV Network Monitoring System Figure 2: Cheetah Fiber Cable TV Network Monitoring System Figure 3: Smart Fiber Network Monitoring System Figure 4: Tree Branch Architecture Figure 5: Star Network Architecture Figure 6(a) The fiber length is about 25 kilometers, and the tdr measurement pattern is normal. Figure 6(b). The fiber length is about 25 km. There is a TDR measurement pattern with a break point, and the position of the break point is greatly attenuated. ° 1355813 [Main component symbol description]

• 105,301 cable multi-channel signal 104,204,208,302,312 optical transmitter 102,203,303 demultiplexer 110 demultiplexer multiplexer 304 mobile phone automatic dial control loop 306 optical time domain reflectometer control loop 101,307 optical time domain reflectometer 308 computer 206,309 optical coupler 106,210,310 Single mode fiber 107, 205, 207, 305, 311 optical receiver 103 optical amplifier 108 user 109 reflector terminal 201 CH02, CH03, ... CH78: cable signal 202 response receiver 202 209 transponder

Claims (1)

"Month" date correction replacement page, patent application scope: A smart fiber network monitoring system, including: a. Signal source, wherein the signal source includes: laser light source, analog signal, digital signal and cable channel; The automatic dialing system of the mobile phone, wherein the automatic dialing system of the mobile phone comprises: a mobile phone and a control loop; c. The optical time domain reflection measuring system's towel, the light shouting quantity _ system includes: the optical time domain reflectometer control loop , an optical time domain reflectometer and a computer; d. a head-end return signal receiver, wherein the head-end return signal receiver is an optical receiver, and the signal returned by the receiving end determines whether the optical network is normal; The mobile phone automatic dialing system and the optical time domain reflection measuring system can be provided with a driving signal; l the receiving end receives the system back transmission system, wherein the receiving end receiving system and the returning system are respectively touched by the optical contact machine and the new shooting machine, Silk (10) converts the miscellaneous voyage number into a telecommunication number, 'Ό 钱 TV money and sends out a signal to purchase the light, and the optical transmitter returns a light signal; f. two w transfer media 'where' Having a medium or a transmission power OFF type optical medium configured. According to the application for the first section of the wisdom of the light _«« system, where η / original by the cable TV _ Wei Wei money laser _ into. Γ Apply for the intelligent optical network supervision system mentioned in the first paragraph of the patent scope, in which the ‘2 dialing system is composed of mobile phones and — (4) Wei, and the mobile phone automatic reduction system is provided by the return signal receiver. /丨丨1月> The old correction replacement page is based on the intelligent fiber-optic network monitoring system described in claim 1 of the patent application scope, in which the optical time domain reflection measurement is replaced by the component or instrument of the film . According to the intelligent optical network monitoring system described in the item i of the patent term of the invention, wherein the optical time domain reflection leaf 2: the driving signal of the optical time domain reflectometer control circuit of the measuring system is provided by the return signal receiver. According to the intelligent optical network monitoring system described in claim 1, wherein the trigger signal of the driving optical transmitter of the receiving end receiving system and the return transmitting system can be directly transmitted to the television signal or other controllable light. The trigger signal of the transmitter.