Multi-rate adaptive optical signal main / standby routing controller with 3R regeneration function

Abstract

The invention discloses a multi-rate self-adaptive optical signal main / standby routing controller with a 3R regeneration function. The multi-rate self-adaptive optical signal main / standby routing controller is characterized by comprising a first photoelectric conversion module, a second photoelectric conversion module, a signal switching control module and a 3R signal amplification module, through integration of a 3R amplification detection technology, an ultra-high-speed switching mechanism is realized, high-speed switch routing selection is performed on two key optical signal lines, 3R amplification processing is performed on optical signals of a selected path, electronic switching operation is completed within a short time of microsecond magnitude, and the switching efficiency is improved. The performance obviously exceeds the switching duration of about 50 milliseconds of a traditional mechanical optical switch; in addition, the system losslessly amplifies and copies a routing signal of the optical fiber terminal equipment for transmission of a standby optical cable line, so that the continuity of information is ensured, the stability and reliability of system operation are enhanced, the application field of the system is widened, and compared with a conventional optical path main and standby control scheme, the system has high reliability. The method has obvious advantages in the aspects of system robustness and universality.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable communication, and in particular to a multi-rate adaptive optical signal master-slave routing controller with a 3R regeneration function. Background Art

[0002] At present, the SDH ring network protection strategy widely deployed in the optical cable system has revealed its limitations when dealing with Ethernet switching services and point-to-point optical communication needs. A method for controlling the main and standby optical paths based on mechanical optical switches has realized the routing control function, but it inevitably introduces loss problems at the mechanical connection nodes; coupled with the non-absolute consistency of mechanical components, the optical signal is subjected to at least 3-5dBm insertion loss after branching. This high-intensity loss not only weakens the signal strength, but may also cause the interruption of the optical cable transmission line. In addition, this method adopts a current-activated relay to perform the conversion of the optical switch by magnetic force. The interruption of the optical signal during this period becomes an inherent defect, which not only delays the timeliness of signal switching, but also increases the risk of signal loss. Furthermore, given the strict requirements of the mechanical structure on service life and working environment, its application flexibility in variable optical cable communication scenarios is greatly limited. Summary of the invention

[0003] In view of the problems mentioned in the background technology, the present invention provides a multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function, which can effectively solve the problem of line communication interruption caused by external interference or other factors, realize automatic conversion of communication paths, and thus ensure the continuity and stability of optical cable communication.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function, characterized in that it includes a first photoelectric conversion module, a second photoelectric conversion module, a signal switching control module and a 3R signal amplification module; The first photoelectric conversion module is used to receive the main line optical signal, convert and output the main route electrical signal, and send it to the signal switching control component; The second photoelectric conversion module is used to receive the backup line optical signal, convert and output the backup line electrical signal, and send it to the signal switching control component; The signal switching control component includes a comparator, a microprocessor and an electronic switch. The comparator is used to compare the current values ​​of the main route electrical signal and the backup route electrical signal, select the electrical signal with a larger current value as the electrical signal required by the optical cable terminal device, and output the comparison result to the microprocessor. The microprocessor controls the electronic switch to control the signal to turn on and off the output electrical signal according to the comparison result. The 3R signal amplification module is used to receive the electrical signal input output by the signal switching control component, and after performing the retiming, signal regeneration and shape reshaping processes, the output enhanced 3R electrical signal is converted into an optical signal through the photoelectric conversion module and output to the terminal device.

[0005] A further solution is: it also includes a passive optical splitter unit, which is used to copy the signal output by the optical cable terminal equipment into two identical main and backup signals and output them to the main and backup optical cable communication lines respectively.

[0006] A further solution is: it also includes a device monitoring unit, which includes a processor and a network management board equipped with a complex logic editor. The processor is connected to the first photoelectric conversion module, the second photoelectric conversion module, and the signal switching control component through corresponding interfaces. The complex logic editor outputs control instructions according to the control logic provided by itself or input by the network management board, and sends them to each connected device module. The network management board is communicated with the control PC machine and is used to send device parameter signals to the remote control PC and receive control instructions.

[0007] A further solution is: also including a power supply unit, including a dual power supply module of 220 volts AC and -48 volts DC, for powering the equipment.

[0008] A further solution is: the 3R amplifier component uses Maxim3872 as its core processing unit, which integrates a rate control and data recovery integrated circuit that can be adjusted both discretely and continuously, is compatible with multi-rate operation modes, and is easy to integrate into a system environment where the protocol type is not clearly defined.

[0009] In order to achieve the purpose of the present invention, it also relates to a method for controlling optical cable signals, which is characterized by the following steps: First, two parallel optical cable communication lines are set up, one is the main routing optical cable, and the other is the backup routing optical cable; After the optical cable communication line enters the routing device, the first photoelectric conversion module receives the main routing optical cable optical signal sent by the main routing optical cable, converts it into a main routing electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical main routing status signal to the device monitoring unit; The second photoelectric conversion module receives the backup route optical cable optical signal sent by the backup route optical cable, converts it into a backup route electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical backup route status signal to the device monitoring unit; The signal switching control component receives the main route electrical signal, the backup route electrical signal and the switching control signal, and the signal switching control component judges and compares the quality of the main route electrical signal and the backup route electrical signal, and selects one of the main route electrical signal and the backup route electrical signal as the electrical signal required by the optical cable terminal device and sends it to the 3R amplification unit; Its control logic is: If both the main route electrical signal and the backup route electrical signal exist, the electrical signal with the larger current value between the main route electrical signal and the backup route electrical signal is selected by a comparator as the electrical signal required by the optical cable terminal device; If one of the main route electrical signal and the backup route electrical signal is lost, the other route electrical signal is transmitted to the electronic switch for transmission as the electrical signal required by the optical cable terminal device; If both the electrical signals of the optical main route and the backup route are lost, the electronic switch will not operate; The microprocessor generates a switching control signal which is transmitted to the electronic switch to control the on and off of the corresponding signal route; The electrical signal output by the signal switching control component enters the 3R amplification component and performs retiming, signal regeneration and reshaping processes to produce an enhanced 3R electrical signal, which is then converted into an optical signal by the subsequent optoelectronic conversion module and sent to the optical cable terminal equipment.

[0010] The beneficial effects of the present invention are: 1. This innovative technology adopts a 3R amplification detection routing control mechanism, which shortens the switching time by half compared to the optical path master-slave routing controller used in classic mechanical optical switches. The instantaneous switching time of the electronic switch is less than 10 milliseconds, and the signal loss time is no more than 10 milliseconds, ensuring the continuity of communication services, thereby accelerating the conversion process of optical signals and reducing signal loss. In contrast, traditional mechanical optical switches rely on motor drives, and the time of their mechanical movement and contact stability are unpredictable, and their service life is limited. The electronic optical switch adopted by the present invention abandons the mechanical drive method and significantly reduces the time required for switching.

[0011] 2. This innovative technology adopts 3R amplification components to achieve optical signal retiming, thereby reducing the time domain distortion of digital pulses, and ensures the stability of signal transmission power in each optical cable segment through a regeneration mechanism. At the same time, a reshaping process is performed to eliminate pulse deformation induced by factors such as dispersion, thereby effectively avoiding the insertion loss problem of optical signals. This solution also has the function of enhancing optical signals, improving their strength and quality, and does not generate additional insertion loss introduced by splitting operations, thus maintaining the normal operation of the line. In contrast, the inherent insertion loss problem of classic mechanical optical switches is embedded in the system, and the system lacks the ability to self-power and amplify signals, which means that its application will be limited when the original system optical power margin is insufficient. In addition, it may also increase the optical reflection phenomenon at the contact point and adversely affect the light.

[0012] 3. This innovative technology can be widely deployed in military networks, telecommunications, banking, public security systems, video conferencing and other key data transmission scenarios to ensure a highly stable and efficient optical signal transmission path for users. Its service scope covers many applications such as the primary and backup routing system of gigabit backbone lines, SDH / PDH / FC / POS optical channel protection system, and image line monitoring system.

[0013] In summary, this invention realizes an ultra-high-speed switching mechanism by integrating 3R amplification detection technology, performs high-speed switch routing selection for the two key optical signal lines, and implements 3R amplification processing on the optical signal of the selected path, completing the electronic switching operation in a short time of microseconds. This performance significantly exceeds the switching time of about 50 milliseconds of the traditional mechanical optical switch; in addition, the system losslessly amplifies and copies the routing signal of the optical fiber terminal equipment to supply the backup optical cable line transmission, ensuring the continuity of information. The main and standby routing control unit adopts a dual power supply design of 220 volts AC and -48 volts DC, which not only enhances the stability and reliability of the system operation, but also broadens its application field. Compared with the conventional optical path main and standby control scheme, the present invention shows obvious advantages in system robustness and universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 Schematic diagram of the structure of a signal switching control component according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Example

[0016] As shown in the figure, a multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function includes a first photoelectric conversion module 1, a second photoelectric conversion module 2, a signal switching control module 3 and a 3R signal amplification module 4; The first photoelectric conversion module 1 is used to receive the main line optical signal, convert and output the main route electrical signal, and send it to the signal switching control component 3; The second photoelectric conversion module 2 is used to receive the backup line optical signal, convert and output the backup line electrical signal, and send it to the signal switching control component 3; The signal switching control component 3 includes a comparator 31, a microprocessor 32 and an electronic switch 33. The comparator 31 is used to compare the current values ​​of the main route electrical signal and the backup route electrical signal, select the electrical signal with a larger current value as the electrical signal required by the optical cable terminal device, and output the comparison result to the microprocessor 32. The microprocessor 32 controls the electronic switch 33 to control the signal on and off to output the electrical signal according to the comparison result. The 3R signal amplification module 4 is used to receive the electrical signal input output by the signal switching control component, and after performing the retiming, signal regeneration and reshaping processes, the output enhanced 3R electrical signal is converted into an optical signal through the photoelectric conversion module and output to the terminal device 5.

[0017] It also includes a passive optical splitter unit 6, which is used to copy the signal output by the optical cable terminal device 5 into two identical main and backup signals, output them to the main and backup optical cable communication lines respectively, and send them to another terminal device.

[0018] It also includes a device monitoring unit 7, which includes a processor 71 equipped with a complex logic editor CPLD and a network management board 72. The processor 71 is connected to the first photoelectric conversion module 1, the second photoelectric conversion module 2, and the signal switching control component 3 through corresponding interfaces. The complex logic editor outputs control instructions according to the control logic provided by itself or input by the network management board 72, and sends them to each connected device module. The network management board 72 is communicatively connected with the control PC 8, and is used to send device parameter signals to the remote control PC 8 and receive control instructions.

[0019] It also includes a power supply unit 9, which includes a dual power supply module of 220 volts AC and -48 volts DC, for powering the equipment.

[0020] The 3R amplifier component 4 uses Maxim3872 as its core processing unit, which integrates a discretely or continuously adjustable rate control and data recovery integrated circuit, is compatible with multi-rate operation modes, and is easy to integrate into a system environment where the protocol type is not clearly defined.

[0021] It also relates to an optical cable signal control method, which includes the following steps: First, two parallel optical cable communication lines are set up, one is the main routing optical cable, and the other is the backup routing optical cable; After the optical cable communication line enters the routing device, the first photoelectric conversion module receives the main routing optical cable optical signal sent by the main routing optical cable, converts it into a main routing electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical main routing status signal to the device monitoring unit; The second photoelectric conversion module receives the backup route optical cable optical signal sent by the backup route optical cable, converts it into a backup route electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical backup route status signal to the device monitoring unit; The signal switching control component receives the main route electrical signal, the backup route electrical signal and the switching control signal, and the signal switching control component judges and compares the quality of the main route electrical signal and the backup route electrical signal, and selects one of the main route electrical signal and the backup route electrical signal as the electrical signal required by the optical cable terminal device and sends it to the 3R amplification unit; Its control logic is: If both the main route electrical signal and the backup route electrical signal exist, the electrical signal with the larger current value between the main route electrical signal and the backup route electrical signal is selected by a comparator as the electrical signal required by the optical cable terminal device; If one of the main route electrical signal and the backup route electrical signal is lost, the other route electrical signal is transmitted to the electronic switch for transmission as the electrical signal required by the optical cable terminal device; If both the electrical signals of the optical main route and the backup route are lost, the electronic switch will not operate; The microprocessor generates a switching control signal which is transmitted to the electronic switch to control the on and off of the corresponding signal route; The electrical signal output by the signal switching control component enters the 3R amplification component and performs retiming, signal regeneration and reshaping processes to produce an enhanced 3R electrical signal, which is then converted into an optical signal by the subsequent optoelectronic conversion module and sent to the optical cable terminal equipment.

Claims

1. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function, characterized in that It includes a first photoelectric conversion module, a second photoelectric conversion module, a signal switching control module and a 3R signal amplification module; The first photoelectric conversion module is used to receive the main line optical signal, convert and output the main route electrical signal, and send it to the signal switching control component; The second photoelectric conversion module is used to receive the backup line optical signal, convert and output the backup line electrical signal, and send it to the signal switching control component; The signal switching control component includes a comparator, a microprocessor and an electronic switch. The comparator is used to compare the current values ​​of the main route electrical signal and the backup route electrical signal, select the electrical signal with a larger current value as the electrical signal required by the optical cable terminal device, and output the comparison result to the microprocessor. The microprocessor controls the electronic switch to control the signal to turn on and off the output electrical signal according to the comparison result. The 3R signal amplification module is used to receive the electrical signal input output by the signal switching control component, and after performing the retiming, signal regeneration and shape reshaping processes, the output enhanced 3R electrical signal is converted into an optical signal through the photoelectric conversion module and output to the terminal device.

2. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 1, characterized in that It also includes a passive optical splitter unit, which is used to copy the signal output by the optical cable terminal equipment into two identical main and backup signals and output them to the main and backup optical cable communication lines respectively.

3. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 1 or 2, characterized in that It also includes a device monitoring unit, which includes a processor and a network management board equipped with a complex logic editor. The processor is connected to the first photoelectric conversion module, the second photoelectric conversion module, and the signal switching control component through corresponding interfaces. The complex logic editor outputs control instructions according to the control logic provided by itself or input by the network management board, and sends them to each connected device module. The network management board is connected to the control PC machine for sending device parameter signals to the remote control PC and receiving control instructions.

4. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 1 or 2, characterized in that It also includes a power supply unit, which includes a dual power supply module of 220 volts AC and -48 volts DC, for powering the equipment.

5. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 3, characterized in that It also includes a power supply unit, which includes a dual power supply module of 220 volts AC and -48 volts DC, for powering the equipment.

6. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 1, 2 or 5, characterized in that The 3R amplifying component uses Maxim3872 as its core processing unit.

7. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 3, characterized in that The 3R amplifying component uses Maxim3872 as its core processing unit.

8. A multi-rate adaptive optical signal master-slave routing controller with 3R regeneration function as claimed in claim 4, characterized in that The 3R amplifying component uses Maxim3872 as its core processing unit.

9. A method for controlling optical cable signals based on a multi-rate adaptive optical signal master / slave routing controller with 3R regeneration function according to any one of claims 1 to 8, Its characteristics are as follows: First, two parallel optical cable communication lines are set up, one is the main routing optical cable, and the other is the backup routing optical cable; After the optical cable communication line enters the routing device, the first photoelectric conversion module receives the main routing optical cable optical signal sent by the main routing optical cable, converts it into a main routing electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical main routing status signal to the device monitoring unit; The second photoelectric conversion module receives the backup route optical cable optical signal sent by the backup route optical cable, converts it into a backup route electrical signal and sends it to the signal switching control component, and at the same time sends the optical-to-electrical backup route status signal to the device monitoring unit; The signal switching control component receives the main route electrical signal, the backup route electrical signal and the switching control signal, and the signal switching control component judges and compares the quality of the main route electrical signal and the backup route electrical signal, and selects one of the main route electrical signal and the backup route electrical signal as the electrical signal required by the optical cable terminal device and sends it to the 3R amplification unit; Its control logic is: If both the main route electrical signal and the backup route electrical signal exist, the electrical signal with the larger current value between the main route electrical signal and the backup route electrical signal is selected by a comparator as the electrical signal required by the optical cable terminal device; If one of the main route electrical signal and the backup route electrical signal is lost, the other route electrical signal is transmitted to the electronic switch for transmission as the electrical signal required by the optical cable terminal device; If both the electrical signals of the optical main route and the backup route are lost, the electronic switch will not operate; The microprocessor generates a switching control signal which is transmitted to the electronic switch to control the on and off of the corresponding signal route; The electrical signal output by the signal switching control component enters the 3R amplification component and performs retiming, signal regeneration and reshaping processes to produce an enhanced 3R electrical signal, which is then converted into an optical signal by the subsequent optoelectronic conversion module and sent to the optical cable terminal equipment.

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