CN111865409B - Method and system for transmitting set-top signal based on microcontroller and microcontroller - Google Patents
Method and system for transmitting set-top signal based on microcontroller and microcontroller Download PDFInfo
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- CN111865409B CN111865409B CN202010771198.9A CN202010771198A CN111865409B CN 111865409 B CN111865409 B CN 111865409B CN 202010771198 A CN202010771198 A CN 202010771198A CN 111865409 B CN111865409 B CN 111865409B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/07—Monitoring an optical transmission system using a supervisory signal
- H04B2210/074—Monitoring an optical transmission system using a supervisory signal using a superposed, over-modulated signal
Abstract
The invention discloses a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, wherein the microcontroller comprises a control module, a transmitting module, a receiving module and a storage module; the control module is respectively connected with the storage module, the transmitting module and the receiving module and is used for outputting the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal; the transmitting module is used for encoding the set-top signal and outputting the encoded set-top signal to an optical transceiver; the receiving module is used for demodulating an external optical signal received by the optical transceiver and outputting an external tune-up signal to the control module; the invention can realize the transceiving function of the top-adjusting signal of the microcontroller and effectively avoid the conflict between the I2C communication of the optical module and the top-adjusting signal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller.
Background
Wavelength Division multiplexing (wdm) is a technology in which optical carrier signals of a plurality of different wavelengths are combined together at a transmitting end by a multiplexer and coupled to the same optical fiber of an optical line for transmission. At a receiving end, optical carriers with various wavelengths are separated by a demultiplexer, and then are further processed by an optical receiver to recover original signals, the wavelength division multiplexing system technology is to fully utilize huge bandwidth resources brought by a single-mode optical fiber low-loss area, a low-loss window of an optical fiber can be divided into a plurality of channels according to different wavelengths or frequencies of light waves of each channel, so that a plurality of optical signals with different wavelengths are simultaneously transmitted in one optical fiber, the optical carrier signals with different wavelengths are mutually independent, and the multiplexing transmission of multi-path optical signals can be realized in one optical fiber.
As an important part of a wavelength division multiplexing system, a wavelength division multiplexing optical module is required to have a channel monitoring technology. At present, channel monitoring mainly adopts a top-tuning technology, which means that a low-frequency signal modulation with small amplitude is superposed on a signal at the end of an optical transmitter to be used as an identifier, and different channels adopt different identifier information, so that the function of channel monitoring is achieved.
The function of the tuning top can be divided into two parts of transmission and reception, the optical module needs to frequently transmit and receive tuning top signals with a fixed time sequence, meanwhile, the optical module needs to be ready for receiving an instruction issued by a system through I2C communication at any time, the optical module and the host computer are operated with the highest priority through I2C communication and tuning top signal transmission, when the optical module and the host computer carry out I2C communication, if a data packet of the tuning top signals arrives at the moment, the data packet of the tuning top signals can be lost, namely, the I2C communication conflicts with the tuning top signals.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
The invention aims to provide a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, which can effectively solve the problem that the I2C communication of an optical module conflicts with the set-top signal.
In order to achieve the purpose, the invention adopts the following technical scheme:
a microcontroller comprises a control module, a transmitting module, a receiving module and a storage module; the control module is respectively connected with the storage module, the transmitting module and the receiving module and is used for outputting the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal; the transmitting module is used for encoding the set-top signal and outputting the encoded set-top signal to an optical transceiver; the receiving module is used for demodulating the external optical signal received by the optical transceiver and then outputting an external tuning signal to the control module.
In the microcontroller, the transmitting module comprises a first buffer and a transmitting and encoding unit, and the first buffer is respectively connected with the control module and the transmitting and encoding unit and is used for buffering data in the set-top signal and outputting the buffered data to the transmitting and encoding unit; and the transmitting and encoding unit is used for encoding the set-top signal and outputting the encoded set-top signal to the optical transceiver.
In the microcontroller, the receiving module includes a second buffer and a receiving and decoding unit, and the receiving and decoding unit is connected with the second buffer and is used for demodulating an external optical signal and outputting an external tone-top signal to the second buffer; and the second buffer is connected with the control module and is used for buffering data in an external tune-up signal and then outputting the buffered data to the control module.
In the microcontroller, the storage module comprises a first memory and a second memory, and the first memory is connected with the control module and used for storing identification information; the second memory is connected with the control module and used for storing the digital diagnostic information.
In the microcontroller, the first buffer and the second buffer each include a FIFO memory.
The microcontroller further comprises a transmission bus, wherein the transmission bus comprises a first bus and a second bus, the first bus is used for communicating with a host, and the second bus is used for communicating with an optical transceiver.
A method for transmitting a set-top signal based on the microcontroller, comprising the following steps:
the control module outputs the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal;
the transmitting module encodes the set-top signal and outputs the encoded set-top signal to an optical transceiver;
and the receiving module demodulates the external optical signal received by the optical transceiver and outputs an external tuning signal to the control module.
In the method for transmitting the set-top signal, the step of encoding the set-top signal by the transmitting module and outputting the encoded set-top signal to the optical transceiver comprises:
the first buffer buffers the data in the pilot tone signal and outputs the buffered data to a transmitting and encoding unit;
and the transmitting and encoding unit encodes the pilot tone signal and outputs the encoded pilot tone signal to the optical transceiver.
In the method for transmitting a set-top signal, the step of demodulating, by the receiving module, an external optical signal received by the optical transceiver and outputting an external set-top signal to the control module includes:
the receiving decoding unit demodulates the external optical signal and outputs an external tune-top signal to the second buffer;
and the second buffer buffers data in the external tune-up signal and outputs the buffered data to the control module.
A kind of signal transmission system of tuning top based on microcontroller as above, including host computer, optical module and optic fibre; the optical module comprises a microcontroller and an optical transceiver, wherein the microcontroller controls a module, a transmitting module, a receiving module and a storage module.
Compared with the prior art, the invention provides a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, wherein the microcontroller comprises a control module, a transmitting module, a receiving module and a storage module; the control module is respectively connected with the storage module, the transmitting module and the receiving module and is used for outputting the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal; the transmitting module is used for encoding the set-top signal and outputting the encoded set-top signal to an optical transceiver; the receiving module is used for demodulating an external optical signal received by the optical transceiver and outputting an external tune-up signal to the control module; the invention can realize the transceiving function of the top-adjusting signal of the microcontroller and effectively avoid the conflict between the I2C communication of the optical module and the top-adjusting signal.
Drawings
Fig. 1 is a block diagram of a tuner signal transmission system based on a microcontroller according to the present invention;
fig. 2 is a block diagram of a microcontroller in the tuner signal transmission system based on a microcontroller according to the present invention;
FIG. 3 is a flow chart of a method for transmitting a set-top signal based on a microcontroller according to the present invention;
fig. 4 is a flowchart of step S200 in the method for transmitting a set-top signal based on a microcontroller according to the present invention;
fig. 5 is a flowchart of step S300 in the method for transmitting a set-top signal based on a microcontroller according to the present invention.
Detailed Description
The invention aims to provide a method and a system for transmitting a set-top signal based on a microcontroller and the microcontroller, which can effectively solve the problem that the I2C communication of an optical module conflicts with the set-top signal.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a set top signal transmission system based on a microcontroller 21 provided by the present invention includes a host 10, an optical module 20 and an optical fiber 30, wherein the host 10 is in communication connection with the optical module 20, and the optical module 20 is in communication connection with the optical module 20; wherein, optical module 20 includes microcontroller 21 and optical transceiver 22, microcontroller 21 includes control module 210, transmission module 220, receiving module 230 and storage module 240, microcontroller 21 with host computer 10 with optical transceiver 22 communication connection, optical transceiver 22 with optic fibre 30 communication connection, control module 210 then connects respectively storage module 240, transmission module 220 with receiving module 230 connects.
In specific implementation, when the optical module 20 works normally, the identification information needs to be stored in the storage module 240 in the microcontroller 21, and after the microcontroller 21 is powered on, the control module 210 is configured to output the identification information and the digital diagnostic information stored in the storage module 240 to the transmitting module 220 through a set-top signal, where the control module 210 in this embodiment is a CPU, and the corresponding microcontroller 21 further includes a GPIO port; the transmitting module 220 is configured to encode the tuning signal and output the tuning signal to the optical transceiver 22 through a GPIO port, where the digital diagnostic information includes five monitoring amounts, such as a power supply voltage, a temperature, a laser bias current, a transmitting optical power, and a receiving optical power, and the five monitoring amounts may change at any time, the system host 10 outputs a control command to the microcontroller 21 to transmit an identification signal and real-time digital diagnostic information to the optical transceiver 22 through the tuning signal at a certain frequency through the transmitting module 220 at a certain interval, and then performs a tuning operation on the optical transceiver 22, and the optical transceiver 22 injects the tuned optical signal into the optical fiber 30; the receiving module 230 is configured to demodulate an external optical signal received by the optical transceiver 22 and output an external tuning signal to the control module 210; the control module 210 is further configured to determine whether the external set-top signal is correct, and in this process, the transmitting module 220 and the receiving module 230 are arranged in the microcontroller 21 to implement a function of receiving and transmitting the set-top signal of the microcontroller 21, so as to avoid a collision between the optical module 20 and the set-top signal when performing I2C communication with the host 10; meanwhile, the transmitting module 220 and the receiving module 230 are arranged in the microcontroller 21 to complete the sending and receiving of the tuning signal, and compared with the method that a chip independent of the microcontroller 21 is arranged in the optical module 20 to send and receive the tuning signal, the cost can be effectively reduced.
Further, referring to fig. 2, the transmitting module 220 includes a first buffer 221 and a transmitting and encoding unit 222, where the first buffer 221 is connected to the control module 210 and the transmitting and encoding unit 222, respectively, and is configured to buffer data in the pilot tone signal and output the buffered data to the transmitting and encoding unit 222; the transmission encoding unit 222 is configured to encode the vertex-modulated signal and output the encoded vertex-modulated signal to the optical transceiver 22, specifically, in this embodiment, the first buffer 221 includes a FIFO memory, the FIFO memory is a first-in first-out dual-port buffer, data in the vertex-modulated signal is sequentially shifted to the right or left by one bit per clock pulse through the first buffer 221, then the vertex-modulated signal is output to the transmission encoding unit 222 under the control of the control module 210, and the encoded data of the transmission encoding unit 222 is sent to the optical transceiver 22 through a GPIO port, so that by a shift operation of the FIFO memory in the microcontroller 21, each clock pulse is sequentially shifted to the left or right by one bit, and is output at an output end, which does not increase a burden on a CPU and avoids a collision with I2C communication.
Further, the receiving module 230 includes a second buffer 231 and a receiving decoding unit 232, where the receiving decoding unit 232 is connected to the second buffer 231, and is configured to demodulate the external optical signal and output an external pilot tone signal to the second buffer 231; the second buffer 231 is connected to the control module 210, and is configured to buffer data in an external tune-up signal and output the buffered data to the control module 210, and the receiving and decoding unit 232 receives an external optical signal through a GPIO port and demodulates the external tune-up signal and outputs the demodulated external tune-up signal to the second buffer 231.
Further, the storage module 240 includes a first memory 241 and a second memory 242, the first memory 241 is connected to the control module 210 for storing digital diagnostic information; the second memory 242 is connected to the control module 210 and configured to store the identification information, in this embodiment, the first memory 241 is a FLASH memory, the optical module 20 stores the identification information in the FLASH memory when operating normally, and the second memory 242 is a random access memory RAM and is capable of directly exchanging data with a CPU.
Further, please continue to refer to fig. 2, the microcontroller 21 further includes a transmission bus, the transmission bus includes a first bus 251 and a second bus 252, the first bus 251 is used for communicating with the host 10, the second bus 252 is used for communicating with the optical transceiver 22, specifically, the first bus 251 is a Slave I2C, the microcontroller 21 needs to receive a control command from the system host 10 through a Slave I2C at any time, wherein the system host 10 may also issue some identification information to the optical module 20 through the Slave I2C, and the interrupt priority of the Slave I2C is highest; the second bus 252 is a Master I2C, the Master I2C is used for communication between the microcontroller 21 and the optical transceiver 22, and digital diagnostics can be read from the optical transceiver 22.
Further, the microcontroller 21 further includes an analog-to-digital converter 260, the analog-to-digital converter 260 converts a continuous analog signal into a discrete digital signal, the microcontroller 21 can monitor the analog signals transmitted back by some sensors through the analog-to-digital converter 260, calculate actual values required by digital diagnostic functions such as power supply voltage, temperature, laser bias current, laser emission power, received optical power and the like through a series of algorithms, and store real-time results of the digital diagnostic functions in a random access memory RAM so as to be sent out through a set-top signal later.
Further, the present invention also provides a microcontroller, wherein the microcontroller comprises a control module, a transmitting module, a receiving module and a storage module, and the transmitting module and the receiving module comprising a buffer are arranged in the microcontroller, so that the transceiving function of the set-top signal of the microcontroller can be realized, and the functions of the microcontroller are optimized.
Further, the present invention also provides a method for transmitting a set-top signal based on a microcontroller, referring to fig. 3, the method for transmitting a set-top signal includes the following steps:
s100, the control module outputs the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal;
s200, the transmitting module encodes the set-top signal and outputs the encoded set-top signal to an optical transceiver;
s300, the receiving module demodulates the external optical signal received by the optical transceiver and outputs an external tune-up signal to the control module.
Further, referring to fig. 4, the step S200 specifically includes:
s210, buffering data in the pilot tone signal by a first buffer and then outputting the buffered data to a transmitting and encoding unit;
and S220, the transmitting and encoding unit encodes the pilot tone signal and outputs the encoded pilot tone signal to the optical transceiver.
Further, referring to fig. 5, the step S300 specifically includes:
s310, the receiving and decoding unit demodulates the external optical signal and outputs an external pilot tone signal to a second buffer;
and S320, the second buffer buffers data in the external tune-to-tune signal and then outputs the buffered data to the control module.
In summary, the invention provides a method, a system and a microcontroller for transmitting a set-top signal based on the microcontroller, wherein the microcontroller comprises a control module, a transmitting module, a receiving module and a storage module; the control module is respectively connected with the storage module, the transmitting module and the receiving module and is used for outputting the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal; the transmitting module is used for encoding the set-top signal and outputting the encoded set-top signal to an optical transceiver; the receiving module is used for demodulating an external optical signal received by the optical transceiver and outputting an external tune-up signal to the control module; the invention can realize the transceiving function of the top-adjusting signal of the microcontroller and effectively avoid the conflict between the I2C communication of the optical module and the top-adjusting signal.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. A microcontroller is characterized by comprising a control module, a transmitting module, a receiving module and a storage module; the control module is respectively connected with the storage module, the transmitting module and the receiving module and is used for outputting the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal; the transmitting module is used for encoding the set-top signal and outputting the encoded set-top signal to an optical transceiver; the receiving module is used for demodulating an external optical signal received by the optical transceiver and outputting an external tune-up signal to the control module; the optical transceiver further comprises a transmission bus, wherein the transmission bus comprises a first bus and a second bus, the first bus is used for communicating with a host, and the second bus is used for communicating with the optical transceiver.
2. The microcontroller according to claim 1, wherein the transmission module comprises a first buffer and a transmission coding unit, and the first buffer is respectively connected to the control module and the transmission coding unit, and is configured to buffer data in the pilot tone signal and output the buffered data to the transmission coding unit; and the transmitting and encoding unit is used for encoding the set-top signal and outputting the encoded set-top signal to the optical transceiver.
3. The microcontroller of claim 2, wherein the receiving module comprises a second buffer and a receiving decoding unit, and the receiving decoding unit is connected to the second buffer and configured to demodulate the external optical signal and output an external pilot signal to the second buffer; and the second buffer is connected with the control module and is used for buffering data in an external tune-up signal and then outputting the buffered data to the control module.
4. The microcontroller of claim 1, wherein the memory module comprises a first memory and a second memory, the first memory being coupled to the control module for storing identification information; the second memory is connected with the control module and used for storing the digital diagnostic information.
5. The microcontroller of claim 3 wherein the first buffer and the second buffer each comprise a FIFO memory.
6. A method for transmitting a tuning signal based on the microcontroller according to any one of claims 1-5, comprising the steps of:
the control module outputs the identification information and the digital diagnosis information stored in the storage module to the transmitting module through a set-top signal;
the transmitting module encodes the set-top signal and outputs the encoded set-top signal to an optical transceiver;
and the receiving module demodulates the external optical signal received by the optical transceiver and outputs an external tuning signal to the control module.
7. The method of claim 6, wherein the step of the transmitter module encoding the set-top signal and outputting the encoded set-top signal to the optical transceiver comprises:
the first buffer buffers the data in the pilot tone signal and outputs the buffered data to a transmitting and encoding unit;
and the transmitting and encoding unit encodes the pilot tone signal and outputs the encoded pilot tone signal to the optical transceiver.
8. The method of claim 6, wherein the step of the receiving module demodulating the external optical signal received by the optical transceiver and outputting the external tuning signal to the control module comprises:
the receiving decoding unit demodulates the external optical signal and outputs an external tune-top signal to the second buffer;
and the second buffer buffers data in the external tune-up signal and outputs the buffered data to the control module.
9. A set-top signal transmission system based on the microcontroller according to any one of claims 1-5, comprising a host, an optical module and an optical fiber; the optical module comprises a microcontroller and an optical transceiver, wherein the microcontroller comprises a control module, a transmitting module, a receiving module and a storage module.
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| CN113114376B (en) * | 2021-03-26 | 2022-07-01 | 广东九联科技股份有限公司 | Optical module of top-modulated signal based on phase modulation and communication method |
| CN113098613B (en) * | 2021-03-31 | 2022-09-09 | 青岛海信宽带多媒体技术有限公司 | Optical module and wavelength automatic communication method based on double-MCU optical module |
| CN113422941B (en) * | 2021-05-24 | 2023-04-25 | 江苏科大亨芯半导体技术有限公司 | HDMI data transmission and control system |
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| CN109889273A (en) * | 2019-03-27 | 2019-06-14 | 成都优博创通信技术股份有限公司 | Transceiver and wavelength method of adjustment in Wave division multiplexing passive optical network |
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