CN103795458A - Optical fiber switching protection system and control method thereof - Google Patents

Abstract

An optical fiber switching protection system is provided. The optical fiber switching protection system comprises transmission equipment for sending communication signals and transmission routes for transmitting signals. The system further comprises optical fiber switching equipment for performing optical fiber switching; the optical fiber switching equipment is provided with a switching unit and a detection unit; after entering the optical fiber switching equipment, the communication signals are transmitted to the transmission routes; and the transmission equipment is provided with a power supplying unit, a control unit and a network management unit, wherein the power supplying unit supplies power for the system, and the network management unit is connected with the control unit. With the system adopted, the problem of requirements for a large quantity of manpower in optical fiber interruption can be solved; two transmission routes are simultaneously provided for the communication signals, so when one of the routes fails, signal transmission can be immediately switched to the other transmission route in 35ms, and therefore, it can be ensured that the signal transmission will not be interrupted.

Description

Optical fiber switching protection system and its control method

technical field

The invention relates to the technical field of electric power communication, in particular to an optical fiber switching protection system and a control method thereof. the

Background technique

With the development of communication technology and changes in requirements, the communication transmission network has basically formed an all-optical network, and puts forward higher requirements for the security performance of the transmission network. The transmission medium of the optical fiber communication network is optical cable, which is often buried or overhead. Due to the needs of urban construction in recent years, various engineering constructions are relatively frequent, which poses a great hidden danger to the safety of communication optical cables. Incidents of breaking communication optical cables often occur, and frequent natural disasters also threaten the safety of communication optical cables. Among the communication failure events, the failure of communication optical cables often accounts for a very high proportion. If an emergency method can be found to ensure the normal communication of the entire network when the communication optical cable fails, the security of the network will undoubtedly be greatly improved. At present, there are two main emergency measures: 1. Set up a ring network to make it have a self-healing function; 2. Manual scheduling. In the event of a failure, the business is scheduled to another optical cable route through manual on-site. The former can achieve a certain degree of network protection, but it cannot cope with the situation that two or more points fail at the same time, and must require the network to form a loop, which cannot adapt to all situations. The latter has poor real-time performance. Under the current situation, there are strict requirements on the time of network interruption, and manual on-site scheduling obviously cannot meet the demand. the

It is under the background described above that the communication optical fiber switching system is produced. That is: when the optical fiber is broken, the system can switch the broken optical fiber to the prepared spare optical fiber for communication, so as to ensure that normal communication can be restored in the shortest possible time. the

Contents of the invention

The object of the present invention is to provide an optical fiber switching protection system and its control method, the system can automatically realize the switching of the optical cable line when the optical cable line fails, so as to ensure the normal communication of services. the

To achieve the above object, the present invention adopts the following technical solutions:

An optical fiber switching protection system, the system includes a transmission device for sending communication signals and a transmission route for transmitting signals, the system also includes an optical fiber switching device for performing optical fiber switching, the optical fiber switching device is provided with a switching unit and a detection unit, and the communication signal enters After the optical fiber switches the equipment, it is transported to the transmission route. The transmission equipment is provided with a power supply unit, a control unit and a network management unit, the power supply unit supplies power to the system, and the network management unit is connected to the control unit. the

The detection unit includes a laser, a detector and a 97:3 beam splitter. the

A kind of optical fiber switching protection method, its steps include: Step 1, signal sending end, transmission equipment sends communication signal and enters optical fiber switching equipment; Step 2, the detection unit on the optical fiber switching equipment detects the state of transmission route; When a fault occurs, the switching unit on the fiber optic switching device receives a signal to switch the route; step 4, the communication signal enters the transmission route through the output end of the fiber optic switching device; step 5, the signal receiving end, the communication signal reaches the transmission route through the input end of the fiber optic switching device equipment. the

The optical fiber switching device has two input ends and output ends which are respectively connected to corresponding different transmission routes. the

The beneficial effects of the present invention are: after adopting the above structure, since two transmission routes are provided for the transmission signal at the same time, when one route fails, it can immediately switch to another transmission route within 35ms to ensure that the signal transmission will not be interrupted . the

Description of drawings

Figure 1 is a schematic diagram of the application structure of the system;

1 is the optical fiber switching device; 2 is the transmission route one; 3 is the transmission route two. the

Detailed ways

Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention. the

As shown in Figure 1, an optical fiber switching protection system, the system includes a transmission device for sending communication signals, an optical fiber switching device for performing optical fiber switching, and a transmission route for transmitting signals. The transmission device is provided with a power supply unit, a control unit and a network management unit. The optical fiber switching device is provided with a switching unit and a detection unit, and there are two transmission routes, which are respectively recorded as transmission route 1 and transmission route 2. Control unit: ARM chip is used to write the control program. The ARM chip is small in size, low in power consumption, low in cost and high in performance. The control unit is used to control the work of the entire system; switching unit: composed of four 1×2 optical switches , the insertion loss of a single optical switch is less than 0.8dB, and the switching time is less than 15ms. The short switching unit can ensure the normal operation of the communication; the detection unit: consists of a laser, a detector, and a beam splitter. The optional model of the beam splitter is 97:3, and the detection The unit can detect the on-off of the optical signal; power supply unit: supports modular hot-swappable dual power supplies, can support -48V and 220V power supply, dual power supplies increase selectivity, and the hot-swappable mode makes it possible to plug and unplug without shutting down the device Power supply, more convenient to use; network management unit: support TCP/IP network management, provide RS232 and RJ45 control interfaces, RS232 and RJ45 are commonly used data transmission interfaces, the interface has a variety of modes, a wide range of choices, and is widely used. Due to the comprehensive use of the detection unit and the switching unit, the system can automatically realize the switching of the optical cable line, thereby ensuring the normal communication of the business. the

A kind of optical fiber switching protection method, its steps include: step 1, signal sending end, transmission equipment sends communication signal and enters optical fiber switching equipment; One is the working route in the working state and the idle route in the idle state. The detection unit on the optical fiber switching device detects the status of the working route and the idle route; The switching unit on the switch immediately sends a switching action after receiving the signal, and switches the signal to the fault-free route for transmission to ensure that the signal transmission is not interrupted; step 4, the communication signal enters the transmission route through the output end of the optical fiber switching device; step 5, the signal receiving end, The communication signal reaches the transmission device through the input end of the optical fiber switching device. the

After the communication signal is sent by the transmission equipment, it enters the optical fiber switching equipment. The two output ends of the optical fiber switching equipment are respectively connected to different transmission routes. At the signal receiving end, the two input ends of the optical fiber switching signal to the transmission device. The core of the whole system consists of four 1×2 optical switches of the switching unit, which cooperate with the control circuit and ARM chip to realize the switching of optical fibers. When the communication signal is connected to the optical fiber switching device, since the optical switch can only connect to one channel at the same time, its signal needs to be transmitted in route one or route two, keep one channel working and one channel idle, when the detection unit detects that the current working route is faulty , and at the same time detect that the idle route is fault-free, the switching unit immediately sends a switching action to switch the signal to the fault-free route for transmission, ensuring that the signal transmission is not interrupted. After the above structure is adopted, since two transmission routes are provided for the transmission signal at the same time, when one route fails, the control unit can immediately judge and send an instruction to switch to another transmission route within 35ms, ensuring that the signal transmission will not be interrupted. the

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are adopted in the method concept and technical solutions of the present invention, or there is no improvement Directly applying the conception and technical solutions of the present invention to other occasions falls within the protection scope of the present invention. the

Claims (5)

1. A kind of optical fiber switching protection system, this system comprises the transmission equipment that sends communication signal and the transmission route of conveying signal, it is characterized in that, this system also comprises the optical fiber switching equipment that carries out optical fiber switching, is provided with switching unit and on the optical fiber switching equipment The detection unit, the communication signal enters the optical fiber switching device and is sent to the transmission route. 2. The optical fiber switching protection system according to claim 1, wherein the transmission equipment is provided with a power supply unit, a control unit and a network management unit, the power supply unit supplies power to the system, and the network management unit is connected to the control unit. 3. The optical fiber switching protection system according to claim 1, wherein the detection unit comprises a laser, a detector and a beam splitter. 4. A method for optical fiber switching protection, characterized in that the steps include: Step 1, the signal sending end, the transmission equipment sends the communication signal into the optical fiber switching equipment; Step 2, the detection unit on the optical fiber switching device detects the state of the transmission route; Step 3. If the transmission route fails, the switching unit on the optical fiber switching device receives a signal to switch the route Depend on; Step 4, the communication signal enters the transmission route through the output end of the optical fiber switching device; Step 5: At the signal receiving end, the communication signal reaches the transmission device through the input end of the optical fiber switching device. 5 . The optical fiber switching protection method according to claim 4 , wherein the optical fiber switching device has two input terminals and two output terminals connected to corresponding different transmission routes. 6 .

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