CN102412901B - Optical signal transmission method in a kind of optical-fiber network and device - Google Patents
Optical signal transmission method in a kind of optical-fiber network and device Download PDFInfo
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Abstract
This application provides the optical signal transmission method in a kind of optical-fiber network and device, be applied to electric protection plate, method at least comprises: make this first switch under channel status; First photoelectric conversion module transfers to the second photoelectric conversion module by the first switch after converting the light signal being received from first network equipment to the signal of telecommunication, this second photoelectric conversion module is transferred to the first light mouth of light port service plate after converting the signal of telecommunication received to light signal, this light port service plate is processed the light signal received; Light signal after the process being received from the second light mouth of light port service plate is converted to the signal of telecommunication and is transferred to the first photoelectric conversion module by the first sub-switch by this second photoelectric conversion module; This first photoelectric conversion module is transferred to second network equipment after converting the signal of telecommunication received to light signal.The application does not need to carry out Frame process by Framer chip, and tool switch speed is fast, the beneficial effect of simplicity of design.
Description
Technical Field
The present invention relates to optical network communication technologies, and in particular, to a method and an apparatus for transmitting an optical signal in an optical network.
Background
The electric protection board is an active optical path transmission and protection device, and can block the service flow passing through the optical port service board and pass the service flow passing through the optical port service board from a bypass under the condition that the optical port service board fails, so that the function of protecting the service flow is realized.
The electric protection board normally works in a PASS mode (PASS), and sends service traffic from the network equipment in the optical network to the optical port service board for service processing, such as filtering and processing of optical signals, and then sends the service traffic processed by the optical port service board to another network equipment in the optical network, thereby realizing service traffic forwarding between two network equipment in the optical network in the PASS mode.
When the electric protection board detects the fault of the optical port service board, the electric protection board automatically switches to a BYPASS (BYPASS) mode, does not send the received service flow from the network equipment to the optical port service board for service processing, but transparently transmits the received service flow to another network equipment, thereby realizing the protection of the service flow between the two network equipments in the optical network.
Existing electric protection board devices mainly use a physical layer chip (PHY) and a switch chip (MAC) to realize switching between a pass mode and a bypass mode.
Fig. 1 is a schematic diagram illustrating an existing electric protection board in a path mode or a bypass mode to implement service traffic protection. In the normal state of the optical port service panel, the electric protection panel operates in the access mode. An optical module POS XFP slot1 in the electrical protection board converts an optical signal from a network device (not shown in fig. 2) into an electrical signal, and then sends the electrical signal to an FPGA1 chip through a Framer 1 chip, and sends the electrical signal to an MAC chip through the FPGA1 chip, and after the electrical signal is forwarded by the MAC chip, sends the electrical signal to an FPGA2 chip, and sends the POS XFP slot4 to the FPGA2 chip through a Framer4 chip for photoelectric conversion, and finally sends the converted optical signal to another network device (not shown in fig. 1). And under the fault state of the optical port service board, the electric protection board operates in a bypass mode. An optical module POS XFP slot1 in the electrical protection board converts an optical signal from a network device (not shown in fig. 1) into an electrical signal, and then sends the electrical signal to an FPGA1 chip through a Framer 1 chip, sends the electrical signal to a Framer2 chip through the FPGA1 chip, sends the POS XFP slot2 through the Framer2 chip for photoelectric conversion, and finally sends the converted optical signal to another network device (not shown in the figure), thereby performing transparent transmission of traffic flow.
When the electric protection board shown in fig. 1 performs service traffic transmission, not only the Framer chip needs to be implemented by software for data frame processing and protocol analysis and logic support, but also the board cost is increased; in addition, the optical path electrical protection is to judge the port state by scanning the state of the Framer through software, and the switching speed is slow.
Disclosure of Invention
The invention aims to provide an optical signal transmission method and an optical signal transmission device, which do not perform data frame processing in a software mode.
In order to achieve the above object, an embodiment of the present invention provides: a method for transmitting an optical signal in an optical network, said method being applied to an electrical protection board, characterized in that it comprises:
outputting a first control signal to a first electronic switch and a second electronic switch to enable the first electronic switch and the second electronic switch to work in a closed state;
the first photoelectric conversion module converts an optical signal received from the first network device into an electrical signal and transmits the electrical signal to the second photoelectric conversion module through the first electronic switch, and the second photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to a first optical port of an optical port service board, so that the optical port service board processes the received optical signal; the second photoelectric conversion module receives a processed optical signal output by a second optical port of the optical port service board and transmits the processed optical signal to the first photoelectric conversion module through the first electronic switch; the first photoelectric conversion module converts the received processed electric signal into an optical signal and transmits the optical signal to second network equipment;
the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the fourth photoelectric conversion module through the second electronic switch, and the fourth photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second optical port, so that the optical port service board processes the received optical signal; the fourth photoelectric conversion module receives the processed optical signal output by the first optical port and transmits the processed optical signal to the third photoelectric conversion module through the second electronic switch; the third photoelectric conversion module converts the received processed electric signal into an optical signal and transmits the optical signal to the first network equipment.
In order to achieve the above object, an embodiment of the present invention further provides:
an optical signal transmission device in an optical network, the device being applied to an electrical protection board, the device comprising: the photoelectric conversion device comprises a control module, a first electronic switch, a second electronic switch, a first photoelectric conversion module, a second photoelectric conversion module, a third photoelectric conversion module and a fourth photoelectric conversion module; wherein,
the first photoelectric conversion module is provided with a first input end connected with the output end of the first network equipment, and a first output end connected with the first input end of the first electronic switch; the second input end is connected with the second output end of the first electronic switch; and a second output connected to an input of a second network device;
the second photoelectric conversion module is provided with a first input end connected with the first output end of the first electronic switch; the first output end is connected with the input end of a first optical port on the optical port service board; the second input end is connected with the output end of a second optical port on the optical port service board; the second output end is connected with the second input end of the first electronic switch;
the third photoelectric conversion module is provided with a first input end connected with the output end of the second network equipment, and a first output end connected with the first input end of the second electronic switch; the second input end is connected with the second output end of the second electronic switch; and a second output connected to the input of the first network device;
the fourth photoelectric conversion module is provided with a first input end connected with the first output end of the second electronic switch; the first output end is connected with the input end of the second optical port; the second input end is connected with the output end of the first optical port; the second output end is connected with the second input end of the second electronic switch;
the control module is provided with a control signal output end and is connected with the control signal input end of the first electronic switch and the control signal input end of the second electronic switch; a light path protection module; the control signal output end outputs a first control signal;
the first electronic switch comprises a first input end, a second output end and a control signal receiving end, the first input end, the second input end and the control signal receiving end are connected with the control signal output end of the control module, and the light path port conduction module is used for determining that the control signal receiving end receives a first control signal, conducting the first input end and the first output end and conducting the second input end and the second output end;
and the second electronic switch comprises a first input end, a second output end and a control signal receiving end, the control signal receiving end is connected with the control signal output end of the control module, the light path port is connected with the module, the control signal receiving end is determined to receive the first control signal, and the first input end and the first output end are connected and the second input end and the second output end are connected.
The invention at least processes data frames through the Framer chip, has fast switching speed and simple design, controls the transmission and protection of optical signals through the electronic switch, and improves the reliability and the anti-interference performance.
Drawings
Fig. 1 is a schematic diagram illustrating a conventional electric protection board in a pass-through mode or a bypass mode to implement service traffic transmission and protection;
fig. 2 is a flowchart illustrating an optical signal transmission method in an optical network according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating an optical signal transmission method in an optical network according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an optical signal transmission apparatus of an optical network according to a third embodiment of the present invention;
FIG. 5A is a schematic diagram illustrating a port conducting state of an electronic switch of FIG. 4;
fig. 5B is a schematic diagram illustrating a port conducting state of the other electronic switch of fig. 4.
Detailed Description
Fig. 2 is a flowchart of optical signal transmission according to a first embodiment of the present invention. This embodiment can be applied to an electric protection board. The method comprises the following steps:
step 201, outputting a first control signal to a first electronic switch and a second electronic switch to enable the first electronic switch and the second electronic switch to work in an on state;
step 202, a first photoelectric conversion module converts an optical signal received from a first network device into an electrical signal and transmits the electrical signal to a second photoelectric conversion module through a first electronic switch;
step 203, the second photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the first optical port of the optical port service board, so that the optical port service board processes the received optical signal;
step 204, the second photoelectric conversion module converts the processed optical signal received from the second optical port of the optical port service board into an electrical signal and transmits the electrical signal to the first photoelectric conversion module through the first electronic switch;
step 205, the first optical-to-electrical conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second network device;
step 206, the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the fourth photoelectric conversion module through the second electronic switch;
step 207, the fourth photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second optical port, so that the optical port service board processes the received optical signal;
step 208, the fourth photoelectric conversion module converts the processed optical signal received from the first optical port into an electrical signal and transmits the electrical signal to the third photoelectric conversion module through the second electronic switch;
in step 209, the third optical-to-electrical conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the first network device.
The embodiment has the advantages that the received signals from the network equipment are converted into the electric signals through the photoelectric conversion module, data frame processing is not needed through a Framer chip, and the photoelectric conversion module has the advantages of high switching speed and simple design.
Fig. 3 is a flowchart illustrating an optical signal transmission method in an optical network according to a second embodiment of the present invention.
Step 301, outputting a first control signal to a first electronic switch and a second electronic switch to enable the first electronic switch and the second electronic switch to work in an on state;
step 302, the first photoelectric conversion module converts the optical signal received from the first network device into an electrical signal and transmits the electrical signal to the second photoelectric conversion module through the first electronic switch;
step 303, the second photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the first optical port of the optical port service board, so that the optical port service board processes the received optical signal;
step 304, the second photoelectric conversion module converts the processed optical signal received from the second optical port of the optical port service board into an electrical signal and transmits the electrical signal to the first photoelectric conversion module through the first electronic switch;
step 305, the first photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second network device;
step 306, the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the fourth photoelectric conversion module through the second electronic switch;
step 307, the fourth photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second optical port, so that the optical port service board processes the received optical signal;
step 308, the fourth photoelectric conversion module converts the processed optical signal received from the first optical port into an electrical signal and transmits the electrical signal to the third photoelectric conversion module through the second electronic switch;
step 309, the third photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the first network device;
step 310, receiving an optical signal loss signal reported by the second or fourth photoelectric conversion module; outputting a second control signal to the first electronic switch and the second electronic switch to enable the first electronic switch and the second electronic switch to work in a bypass state;
step 311, the first photoelectric conversion module converts the optical signal received from the first network device into an electrical signal and transmits the electrical signal to the first electronic switch; the first electronic switch transmits the received electric signal back to the first photoelectric conversion module; the first photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to the second network equipment;
the third photoelectric conversion module converts the optical signal received from the second network equipment into an electric signal and transmits the electric signal to the second electronic switch; the second electronic switch transmits the received electric signal to the third photoelectric conversion module in a loopback mode; the third photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to the first network equipment.
Step 312, receiving the optical signal recovery signal reported by the second or fourth optical-to-electrical conversion module, the process returns to step 301, i.e. outputting the first control signal to the switch S1 or S2 to make the switch S1 or S2 operate in PASS state, so as to make the switch S1 or S2 operate in PASS state
The embodiment has the advantages that the received signals from the network equipment are converted into the electric signals through the photoelectric conversion module, data frame processing is not needed through a Framer chip, and the photoelectric conversion module has the advantages of high switching speed and simple design.
Fig. 4 is a schematic structural diagram of an optical signal transmission apparatus of an optical network according to a third embodiment of the present invention. As shown in fig. 4, the device may be applied to an electric protection board. The electric protection board at least comprises 4 photoelectric conversion devices XFP SLOT 1-XFP SLOT4, high-speed electronic switches S1-S2 and a control unit MCU.
Take the optical path between router 1 and router 2 in fig. 4 and the application of optical path protection as an example. In fig. 4, XFP SLOT1 is connected to the transmitting end of router 1 and the receiving end of router 2 via optical fibers (not shown in fig. 4); XFP SLOT3 connects the receiving end of router 1 and the transmitting end of router 2, respectively, via optical fibers (not shown in fig. 4). The XFP SLOT2 is connected to the transmitting end of PORT1 and the receiving end of PORT2 of the optical interface service board PORT1 respectively through optical fibers (not shown in fig. 4), and the XFP SLOT4 is connected to the receiving end of PORT1 and the transmitting end of PORT2 respectively through optical fibers (not shown in fig. 4).
As shown in fig. 4, XFP SLOT2 and XFP SLOT4 detect the operational status of the optical interface service boards. When the optical interface service board normally operates, the electric protection board is in a PASS state. The MCU outputs first control signals (e.g., SELA0 high and SELA1 low; SELB0 high and SELB1 low) to cause switches S1 and S2 to operate in a PASS (PASS) state.
To more clearly illustrate the conducting states of the switches S1 and S2 in the pass state and the BYPASS (BYPASS) state in fig. 4, the switch S1 will be taken as an example in conjunction with fig. 5.
IN fig. 5A, after the switch S1 receives the first control signal output by the MCU, the first input terminal IN1 is connected to the first output terminal OUT1, the second input terminal IN2 is connected to the second output terminal OUT2, and the on state of the switch S1 is shown IN the figure.
IN fig. 5B, after the switch S2 receives the first control signal output by the MCU, the same on state is realized, the first input terminal IN1 ' is connected to the first output terminal OUT1 ', and the second input terminal IN2 ' is connected to the second output terminal OUT2, please refer to the on state of the switch S2. The router 1 sends an optical signal, the optical signal is transmitted to a first input end of an XFP SLOT1 through an optical fiber, the XFP SLOT1 converts the received optical signal into an electrical signal and transmits the electrical signal to a first input end IN1 of a switch S1 through a first output end, and the switch S1 transmits the received electrical signal to a first receiving end of the XFP SLOT2 through a first output end OUT 1; the XFP SLOT2 converts the received electrical signal into an optical signal, and transmits the optical signal to the receiving end of the PORT2 via the optical fiber via the first output end. The optical PORT service board receives the optical signal through the receiving terminal of the PORT2 and then performs service processing, and transmits the processed optical signal to the second receiving terminal of the XFP SLOT2 through the optical fiber from the output terminal of the PORT 1; the XFPSLOT2 converts the received processed optical signal into an electrical signal, and transmits the electrical signal to a second receiving end IN2 of the switch S1 through a second output end; the switch S1 transmits the received electrical signal to the XFPSLOT1 through the second output terminal OUT 2; the XFP SLOT1 converts the received electrical signal into an optical signal, which is transmitted to the receiving end of the router 2 via an optical fiber. Thereby completing optical signal transmission in the optical network between the router 1 to the router 2.
Similarly, the router 2 sends an optical signal, and transmits the optical signal to the first input end of the XFP SLOT3 through an optical fiber, the XFP SLOT3 converts the received optical signal into an electrical signal and transmits the electrical signal to the first input end IN1 'of the switch S2 through the first output end, and the switch S2 transmits the received electrical signal to the first receiving end of the XFP SLOT4 through the first output end OUT 1'; the XFP SLOT4 converts the received electrical signal into an optical signal, and transmits the optical signal to the receiving end of the PORT1 via the optical fiber via the first output end. The optical PORT service board receives the optical signal through the receiving terminal of the PORT1 and then performs service processing, and transmits the processed optical signal to the second receiving terminal of the XFP SLOT4 through the optical fiber from the output terminal of the PORT 2; the XFP SLOT4 converts the received processed optical signal into an electrical signal, which is transmitted to the second receiving terminal IN2 'of the switch S2 through its second output terminal, and the switch S2 transmits the received electrical signal to the XFP SLOT3 through the second output terminal OUT 2'; the XFP SLOT3 converts the received electrical signal into an optical signal, which is transmitted to the receiving end of the router 1 via an optical fiber. Thereby completing optical signal transmission in the optical network between the router 2 to the router 1.
In this embodiment, the electric protection board performs data frame processing by using the Framer chip, and has the advantages of high switching speed and simple design, and further has the advantages of controlling transmission and protection of optical signals by using the electronic switch, and improving reliability and anti-interference performance.
Further, when detecting that the optical interface service board has a fault, the XFP SLOT2 or XFP SLOT4 reports a LOSs of Signal (LOS) Signal to the MCU. The electric protection board is in BYPASS state. The MCU outputs second control signals (e.g., SELA0 low and SELA1 high; SELB0 low and SELB1 high) to cause switches S1 and S2 to operate in a bypass state.
IN fig. 5A, after the switch S1 receives the second control signal output by the MCU, the first input terminal IN1 and the second output terminal OUT2 are turned on, and the bypass state of the switch S1 is as shown IN the figure. IN the BYPASS state, the data at the second input IN2 of S1 is already invalid and does not need to be turned on, and since the switch S1 is a high speed electronic switch, the PASS state and the BYPASS state are switched IN synchronization.
IN fig. 5B, the switch S2 turns on the first input terminal IN1 'and the second output terminal OUT 2' after receiving the first control signal outputted by the MCU, and the bypass state of the switch S2 is as shown IN the figure. Similarly, IN the BYPASS state, the data at the second input IN 2' of S2 is already invalid and does not need to be turned on, and the switch S2 is also a high-speed electronic switch, so that the PASS state and the BYPASS state are switched synchronously.
The router 1 sends optical signals, the optical signals are transmitted to a first input end of the XFP SLOT1 through optical fibers, the XFP SLOT1 converts the received optical signals into electric signals and transmits the electric signals to a first input end of the switch S1 through a first output end, and the switch S1 transmits the received electric signals to a second receiving end of the XFP SLOT1 through a second output end; the electrical signal received by XFPSLOT1 is converted to an optical signal and transmitted through a second output port via an optical fiber to the receiving port of router 2. Therefore, when the optical port service board fails, the switching of the optical path is completed, and the optical signal transmission in the optical network between the router 1 and the router 2 is realized. Transparent transmission between the router 1 and the router 2 is realized, namely, the electric protection board realizes the optical path protection function from the physical layer.
Similarly, the router 1 of the router 2 sends an optical signal, which is transmitted to a first input terminal of the XFP SLOT3 through an optical fiber, the XFP SLOT3 converts the received optical signal into an electrical signal and transmits the electrical signal to a first input terminal of the switch S2 through a first output terminal, and the switch S3 transmits the received electrical signal to a second receiving terminal of the XFP SLOT3 through a second output terminal; the electrical signal received by XFP SLOT3 is converted into an optical signal, which is transmitted to the receiving end of the router 1 via the optical fiber via the second output end. Therefore, when the optical port service board fails, the switching of the optical path is completed, the optical signal transmission in the optical network between the router 2 and the router 1 is realized, the transparent transmission between the router 2 and the router 1 is realized, and the optical path protection function is realized by the electric protection board from a physical layer.
When the MCU receives a low-level LOS signal (or a high-level LOS signal) output by the optical port service board XFP SLOT2 or XFP SLOT4, and the MCU detects an optical signal recovery signal, the MCU outputs a first control signal to the switch S1 or S2, so that the switch S1 or S2 operates in a PASS state, and the electrical protection board can be switched to the PASS state to continue to process the service traffic.
The optical path switching and protecting method based on the physical layer has the advantages that the optical path switching and protecting functions based on the physical layer are achieved through the electric protection board, the structural design of the electric protection board is simplified, the cost of the electric protection board is reduced, the time for software protocol analysis and judgment is effectively shortened, the switching speed is improved, the transmission and protection of optical signals are controlled through the electronic switch, and the reliability and the anti-interference performance are improved.
Finally, it should be noted that the router and the optical interface service board in this embodiment are only exemplary descriptions, and those skilled in the art should understand that the present invention may also be used for other network devices such as a switch.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A method for transmitting an optical signal in an optical network, said method being applied to an electrical protection board, characterized in that it comprises:
outputting a first control signal to a first electronic switch and a second electronic switch to enable the first electronic switch and the second electronic switch to work in a closed state;
when the first electronic switch and the second electronic switch work in an on-state, the first photoelectric conversion module converts an optical signal received from the first network device into an electrical signal and transmits the electrical signal to the second photoelectric conversion module through the first electronic switch, and the second photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to a first optical port of the optical port service board, so that the optical port service board processes the received optical signal; the second photoelectric conversion module converts the processed optical signal received from the second optical port of the optical port service board into an electrical signal and transmits the electrical signal to the first photoelectric conversion module through the first electronic switch; the first photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to second network equipment;
the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the fourth photoelectric conversion module through the second electronic switch, and the fourth photoelectric conversion module converts the received electrical signal into an optical signal and transmits the optical signal to the second optical port, so that the optical port service board processes the received optical signal; the fourth photoelectric conversion module converts the processed optical signal received from the first optical port into an electrical signal and transmits the electrical signal to the third photoelectric conversion module through the second electronic switch; the third photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to the first network equipment;
receiving an optical signal loss signal reported by a second photoelectric conversion module; the optical signal loss signal is a level signal;
outputting a second control signal to the first electronic switch and the second electronic switch to enable the first electronic switch and the second electronic switch to work in a bypass state;
when the first electronic switch and the second electronic switch work in a bypass state, the first photoelectric conversion module converts an optical signal received from the first network equipment into an electric signal and transmits the electric signal to the first electronic switch; the first electronic switch transmits the received electrical signal back to the first photoelectric conversion module; the first photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to second network equipment;
the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the second electronic switch; the second electronic switch transmits the received electrical signal back to the third photoelectric conversion module; and the third photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to the first network equipment.
2. The method of claim 1, further comprising:
receiving an optical signal recovery signal reported by a second photoelectric conversion module;
and outputting the first control signal to the first electronic switch and the second electronic switch to enable the first electronic switch and the second electronic switch to work and switch to a passage state.
3. The method of claim 1, further comprising:
receiving an optical signal loss signal reported by the fourth photoelectric conversion module;
outputting a second control signal to the first electronic switch and the second electronic switch to enable the first electronic switch and the second electronic switch to work in a bypass state;
the first photoelectric conversion module converts an optical signal received from the first network device into an electric signal and transmits the electric signal to the first electronic switch; the first electronic switch transmits the received electrical signal back to the first photoelectric conversion module; the first photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to second network equipment;
the third photoelectric conversion module converts the optical signal received from the second network device into an electrical signal and transmits the electrical signal to the second electronic switch; the second electronic switch transmits the received electrical signal back to the third photoelectric conversion module; and the third photoelectric conversion module converts the received electric signal into an optical signal and transmits the optical signal to the first network equipment.
4. The method of claim 1, further comprising:
receiving an optical signal recovery signal reported by the fourth photoelectric conversion module;
and outputting the first control signal to the first electronic switch and the second electronic switch to enable the first electronic switch and the second electronic switch to be switched to an on state.
5. An optical signal transmission device in an optical network, the device being applied to an electrical protection board, the device comprising: the photoelectric conversion device comprises a control module, a first electronic switch, a second electronic switch, a first photoelectric conversion module, a second photoelectric conversion module, a third photoelectric conversion module and a fourth photoelectric conversion module; wherein,
the first photoelectric conversion module is provided with a first input end connected with the output end of the first network equipment, and a first output end connected with the first input end of the first electronic switch; the second input end is connected with the second output end of the first electronic switch; and a second output connected to an input of a second network device;
the second photoelectric conversion module is provided with a first input end connected with the first output end of the first electronic switch; the first output end is connected with the input end of a first optical port on the optical port service board; the second input end is connected with the output end of a second optical port on the optical port service board; the second output end is connected with the second input end of the first electronic switch; the optical signal loss signal is a level signal;
the third photoelectric conversion module is provided with a first input end connected with the output end of the second network equipment, and a first output end connected with the first input end of the second electronic switch; the second input end is connected with the second output end of the second electronic switch; and a second output connected to an input of the first network device;
the fourth photoelectric conversion module is provided with a first input end connected with the first output end of the second electronic switch; the first output end is connected with the input end of the second optical port; the second input end is connected with the output end of the first optical port; the second output end is connected with the second input end of the second electronic switch;
the control module is provided with a control signal output end and is connected with a first electronic switch control signal input end and a second electronic switch control signal input end; the light path protection module controls the control signal output end to output a first control signal;
the first electronic switch comprises the first input end, the first output end, the second input end, the second output end and a control signal receiving end, and is connected with the control signal output end of the control module, the light path port conduction module determines that the control signal receiving end receives a first control signal, and conducts the first input end with the first output end and conducts the second input end with the second output end;
the second electronic switch comprises the first input end, the second output end and a control signal receiving end, and is connected with the control signal output end of the control module, and the light path port conduction module determines that the control signal receiving end receives a first control signal, conducts the first input end and the first output end and conducts the second input end and the second output end;
the second photoelectric conversion module is also provided with an optical signal detection unit and an optical signal state output end; when the optical signal detection unit detects that the optical signal is lost, the optical signal state output end is controlled to output an optical signal loss signal;
the control module is also provided with an optical signal state receiving end which is connected with the optical signal state output end of the second photoelectric conversion module.
6. The apparatus of claim 5,
the optical signal detection unit of the second photoelectric conversion module is further configured to control the optical signal state output end to output an optical signal restoration signal when detecting that the optical signal is restored.
7. The apparatus of claim 5,
the fourth photoelectric conversion module is also provided with an optical signal detection unit and an optical signal state output end; when the optical signal detection unit detects that the optical signal is lost, the optical signal state output end is controlled to output an optical signal loss signal;
the control module further has an optical signal loss signal receiving end connected to the optical signal loss signal output end of the fourth photoelectric conversion module.
8. The apparatus of claim 5,
and if the optical signal detection unit of the fourth photoelectric conversion module detects that the optical signal is recovered, controlling the optical signal state output end to output an optical signal recovery signal.
9. The apparatus of claim 5 or 7,
the optical path protection module of the control module determines that the optical signal state receiving end receives an optical signal loss signal, and controls the control signal output end to output a second control signal;
the light path port conducting module of the first electronic switch determines that a control signal receiving end receives a second control signal and conducts the first input end and the second output end;
and the light path port of the second electronic switch is connected with the module, and the light path port of the second electronic switch determines that a control signal receiving end receives a second control signal and connects the first input end and the second output end.
10. The apparatus according to claim 6 or 8,
and the light path protection module of the control module determines that the optical signal state receiving end receives the optical signal recovery signal, and controls the control signal output end to output a first control signal.
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| CN113093662A (en) * | 2021-03-18 | 2021-07-09 | 北京六方云信息技术有限公司 | Industrial control system safety protection device and method and industrial control system |
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| CN101123475A (en) * | 2006-08-11 | 2008-02-13 | 华为技术有限公司 | Optical channel protection method, device and system in optical communication system |
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