CN114285734A - Communication monitoring system of transmission line based on optical cable splice closure - Google Patents
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Abstract
The invention discloses a communication monitoring system of a power transmission line based on an optical cable splice closure, which relates to the technical field of communication transmission and comprises a monitoring center, the monitoring center is connected with a signal transmission module, a signal processing module, a signal analysis module and a signal correction module which are arranged in the splicing box in a communication way, and by decomposing a communication signal into a plurality of signal data frames, thereby respectively checking longer communication signals, and compared with the traditional signal transmission mode, the method can quickly eliminate error points when the signal transmission has errors, and because each signal data frame is independent, that is, when an error occurs in a certain signal data frame, only the communication content corresponding to the point in which the error occurs in the signal data frame needs to be corrected, the correction of the whole communication signal can be completed, the signal transmission efficiency is improved, and meanwhile, the time required by signal correction is reduced.
Description
Technical Field
The invention relates to the technical field of communication transmission, in particular to a communication monitoring system of a power transmission line based on an optical cable junction box.
Background
The power transmission line monitoring system realizes real-time perception, monitoring and early warning, analysis and diagnosis, evaluation and prediction of the running state of various power transmission equipment through a sensor technology, a wide area communication technology and an information processing technology.
In the prior art, communication signals of a power transmission line are easily interfered by an external magnetic field and an external electric field in the transmission process, so that errors occur in the transmission process of the signals, and how to quickly check the communication signals when the errors occur in the communication signals, so that the transmission efficiency of the communication signals is improved.
Disclosure of Invention
The invention aims to provide a communication monitoring system of a power transmission line based on an optical cable junction box.
The purpose of the invention can be realized by the following technical scheme: the communication monitoring system of the power transmission line based on the optical cable splice closure comprises a monitoring center, wherein the monitoring center is in communication connection with a signal transmission module, a signal processing module, a signal analysis module and a signal correction module which are arranged in the splice closure;
the signal processing module is used for processing the communication signals to be transmitted, converting the communication signals into data frame segments and converting the data frame segments into corresponding signal data frames.
The signal analysis module analyzes the received communication signals, judges whether the communication signals are wrong or not according to the analysis result, sends the wrong signal data frames to the signal correction module, and corrects the wrong signal data frames through the signal correction module.
Further, the process of processing the communication signal by the signal processing module includes:
converting a communication signal to be transmitted into a data frame, and marking the data frame converted by the communication signal as an original data frame;
acquiring the frame number of unit frames forming an original data frame;
the original data frame is decomposed into data frame segments grouped by k-bit unit frames.
Furthermore, the number of the data frame segments is an integer, and when the number of the data frame segments has a remainder, the remainder part of the number of the data frame segments is complemented by 0, so that the unit frame number of the data frame segments of the remainder part is k, and a new data frame segment is formed.
Further, the acquiring process of the signal data frame includes:
setting a CRC polynomial, and obtaining a binary sequence with unit frame number a according to the CRC polynomial;
and adding a-1 bit of '0' behind the data frame section to form a new data frame, wherein the a-1 bit of '0' added to the new data frame is a bit, dividing the new data frame by a cyclic redundancy check code, and taking the remainder of the result to obtain a binary remainder, and when the number of the data frames of the binary remainder is less than the a-1 bit, performing 0 complementing in front of the obtained binary remainder to obtain the cyclic redundancy check code corresponding to the data frame section, and adding the obtained check code behind the data frame section to obtain the signal data frame.
Further, the analyzing process of the communication signal by the signal analyzing module includes:
marking all signal data frames in the communication signal, acquiring a data frame section consisting of a unit frame of a-1 bit at the tail of each signal data frame, and marking the acquired data frame section as a cyclic redundancy check code of the corresponding signal data frame;
dividing the signal data frame by a binary sequence used for acquiring a cyclic redundancy check code corresponding to the signal data frame, and if a remainder exists in a result, indicating that an error occurs in the signal data frame in a transmission process; if the result has no remainder, it indicates that no error occurs in the signal data frame during transmission.
Further, the signal modification module performs signal modification on the signal data frame with the error, including:
acquiring the marked signal data frames with errors, and reading all unit frames and corresponding sequences in the signal data frames;
obtaining a binary remainder obtained in the analysis process of the signal data frame;
according to the obtained digit of the binary remainder, marking the unit frames at the corresponding positions in the unit frames ordered from low order to high order in the signal data frame; sequentially changing all unit frames, dividing the changed signal data frames by the binary sequence to obtain a result, and judging whether the obtained result has a remainder or not;
when no remainder exists in the result, marking the corresponding unit frame;
acquiring all marked unit frame information, summarizing the unit frame information, and returning to the communication base station for sending the communication signal; acquiring communication contents corresponding to the unit frame according to the unit frame information, summarizing the communication contents, and retransmitting the communication contents to the target communication base station;
and replacing the communication content of the unit frame at the corresponding position in the signal data frame with the communication content to finish the correction of the communication signal.
Further, the change mode of the unit frame includes: if the unit frame is "0", it is changed to "1", and if the unit frame is "1", it is changed to "0".
Further, the unit frame information includes a signal data frame where the unit frame is located, and a position in the signal data frame.
Compared with the prior art, the invention has the beneficial effects that: through decomposing communication signal into a plurality of signal data frame, thereby can check-up respectively longer communication signal, traditional signal transmission mode compares, can make when signal transmission appears the error, quick troubleshooting error point, and because mutual independence between every signal data frame, when a certain signal data frame appears the error promptly, only need revise the corresponding communication content that appears the error in this signal data frame, can accomplish whole communication signal's correction, when having improved signal transmission efficiency, the time that signal correction needs has been reduced.
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FIG. 1 is a flow chart of the present invention.
Detailed Description
As shown in fig. 1, the communication monitoring system for the power transmission line based on the optical cable splice closure comprises a monitoring center, wherein the monitoring center is in communication connection with a signal transmission module, a signal receiving module, a signal processing module, a signal analysis module and a signal correction module which are arranged in the splice closure;
the signal transmission module, the signal processing module, the signal analysis module and the signal correction module are all arranged in a communication base station for the power transmission line;
the signal transmission module is configured to transmit a communication signal of a power transmission line, and it should be further explained that, in a specific implementation process, before the communication signal is transmitted, the signal processing module processes the communication signal to be transmitted, where the process of processing the communication signal by the signal processing module specifically includes:
converting a communication signal to be transmitted into a data frame, and marking the data frame converted by the communication signal as an original data frame;
acquiring the number of unit frames forming an original data frame, and recording the number of the unit frames of the original data frame as m;
decomposing the original data frame into data frame segments with k bit unit frames as a group, wherein the number of the data frame segments obtained by the original data frame is SJD, and SJD is m/k; it should be further noted that, in the specific implementation process, the SJD is an integer, and when there is a remainder in the SJD, the remainder part of the SJD is complemented by 0, so that the number of unit frames of the data frame segment in the remainder part is k, and a new data frame segment is formed; it should be further noted that, in the specific implementation process, the unit frame is a binary frame;
for example, when the original data frame is 11000011001, the original data frame is decomposed into data frame segments with 4-bit unit frames as a group, and then data frame segments 1100,0011 and 001 are obtained, respectively, and since the unit frame number of the 001 data frame segment is 3, 0 is supplemented to the 001 data frame to obtain data frame segment 0010, so that three complete data frame segments 1100,0011 and 0001 are obtained.
And respectively generating corresponding cyclic redundancy check codes according to the obtained data frame segments, adding the cyclic redundancy check codes to the back of the corresponding data frame segments to form new data frame segments, and marking the new data frame segments as signal data frames.
It should be further noted that, in a specific implementation process, the acquiring process of the signal data frame includes:
setting a CRC polynomial, obtaining a binary sequence according to the CRC polynomial, and recording the unit frame number of the binary sequence as a;
adding (a-1) bit '0' behind the data frame segment to form a new data frame, wherein the (a-1) bit '0' added to the new data frame is a bit, dividing the new data frame by a cyclic redundancy check code, and taking the remainder of the result to obtain a binary remainder; it should be further noted that, in the specific implementation process, when the number of the obtained data frames of the binary remainder is less than (a-1), a 0 is complemented before the obtained binary remainder, and then a cyclic redundancy check code corresponding to the data frame segment is obtained, and the obtained check code is added to the back of the data frame segment, so as to obtain the signal data frame.
For example, the following steps are carried out:
setting the CRC polynomial to F (X) ═ X4+X3+1, data frame segment 10110011;
the obtained binary sequence of the CRC polynomial is 11001, i.e., the unit frame number of the binary sequence of the CRC polynomial is 5;
the 4 bits of "0" are complemented after the data frame segment 10110011 to obtain a new data frame 101100110000;
dividing the new data frame 101100110000 by the binary sequence 11001 to obtain a result with a binary remainder of 100; if the number of bits of the obtained data frame of the binary remainder is 3, the binary remainder is complemented by '0', so that a cyclic redundancy check code 0100 is obtained; the obtained cyclic redundancy check code 0100 is added to the back of the data frame segment to obtain the signal data frame 101100110100.
It should be further noted that, in the specific implementation process, when all signal data frames of the communication signal to be transmitted are obtained by the signal processing module, the signal transmission module sends the communication signal to be transmitted to the signal receiving module in the junction box in the target communication base station through the optical cable;
the signal receiving module is used for receiving communication signals sent by other communication base stations, sending the obtained communication signals to the signal analysis module, and analyzing the received communication signals through the signal analysis module, wherein the specific analysis process comprises the following steps:
marking all signal data frames in the communication signal, acquiring a data frame section consisting of unit frames of the tail (a-1) bit of each signal data frame, and marking the acquired data frame section as a cyclic redundancy check code of the corresponding signal data frame;
dividing the signal data frame by a binary sequence for acquiring a cyclic redundancy check code corresponding to the signal data frame, and acquiring a result;
if the result has remainder, it represents that the signal data frame has error in the transmission process; if the result has no remainder, it indicates that no error occurs in the signal data frame during transmission.
For example, the following steps are carried out:
let 101100110100 be the signal data frame, 11001 be the binary sequence of the cyclic redundancy check code used for obtaining the signal data frame;
dividing the signal data frame 101100110100 by the binary sequence 11001 to obtain a result 11010100, wherein the remainder is 0, which indicates that no error occurs in the signal data frame during transmission;
if the signal data frame is 101100110101, the binary sequence of the cyclic redundancy check code for acquiring the signal data frame is 11001;
then signal data frame 101100110101 is divided by binary sequence 11001 to obtain result 11010100, and the remainder 0001 indicates that the signal data frame is in error during transmission.
It should be further noted that, in the implementation process, when an error occurs in a signal data frame, the signal data frame is marked, and the marked signal data frame is sent to the signal correction module.
The signal correction module is used for performing signal correction on a signal data frame with an error, and the specific process comprises the following steps:
reading all unit frames and corresponding sequences in the signal data frames, wherein the marked signal data frames have errors;
acquiring a binary remainder obtained in the analysis process of the signal data frame;
according to the obtained digit of the binary remainder, marking the unit frames at the corresponding positions in the unit frames which are sequenced from low order to high order in the signal data frame;
all the unit frames are changed in sequence, namely, if the unit frame is '0', the unit frame is changed into '1', and if the unit frame is '1', the unit frame is changed into '0';
dividing the changed signal data frame by a binary sequence to obtain a result and obtain whether a remainder exists in the result;
when no remainder exists in the result, marking the corresponding unit frame;
acquiring all marked unit frame information, summarizing the unit frame information, and returning to the communication base station for sending the communication signal; the unit frame information comprises a signal data frame where the unit frame is located and a position in the signal data frame;
acquiring communication contents corresponding to the unit frame according to the unit frame information, summarizing the communication contents, and retransmitting the communication contents to the target communication base station;
and replacing the communication content of the unit frame at the corresponding position in the signal data frame with the communication content to finish the correction of the communication signal.
It should be further noted that, in the specific implementation process, the communication signal is decomposed into a plurality of signal data frames, so that the longer communication signals can be respectively checked, compared with the conventional signal transmission mode, when the signal transmission has an error, the error point can be rapidly checked, and because each signal data frame is independent, namely when a certain signal data frame has an error, the communication content corresponding to the point where the error occurs in the signal data frame only needs to be corrected, so that the whole communication signal can be corrected, the signal transmission efficiency is improved, and the time required by signal correction is reduced.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (8)
1. The communication monitoring system of the power transmission line based on the optical cable splice closure comprises a monitoring center and is characterized in that the monitoring center is in communication connection with a signal transmission module, a signal processing module, a signal analysis module and a signal correction module which are arranged in the splice closure;
the signal processing module is used for processing a communication signal to be transmitted, converting the communication signal into a data frame section and converting the data frame section into a corresponding signal data frame;
the signal analysis module analyzes the received communication signals, judges whether the communication signals are wrong or not according to the analysis result, sends the wrong signal data frames to the signal correction module, and corrects the wrong signal data frames through the signal correction module.
2. The optical cable closure-based communication monitoring system for power transmission lines of claim 1, wherein the processing of the communication signal by the signal processing module comprises:
converting a communication signal to be transmitted into a data frame, and marking the data frame converted by the communication signal as an original data frame;
acquiring the frame number of unit frames forming an original data frame;
the original data frame is decomposed into data frame segments grouped by k-bit unit frames.
3. The optical cable splice closure-based communication monitoring system for the power transmission line according to claim 2, wherein the number of the data frame segments is an integer, and when the number of the data frame segments has a remainder, the remainder part of the number of the data frame segments is complemented by 0, so that the number of unit frames of the data frame segments in the remainder part is k, and a new data frame segment is formed.
4. The optical cable closure-based communication monitoring system for power transmission lines of claim 3, wherein the signal data frame acquisition process comprises:
setting a CRC polynomial, and obtaining a binary sequence with unit frame number a according to the CRC polynomial;
and adding a-1 bit of '0' behind the data frame section to form a new data frame, wherein the a-1 bit of '0' added to the new data frame is a bit, dividing the new data frame by a cyclic redundancy check code, and taking the remainder of the result to obtain a binary remainder, and when the number of the data frames of the binary remainder is less than the a-1 bit, performing 0 complementing in front of the obtained binary remainder to obtain the cyclic redundancy check code corresponding to the data frame section, and adding the obtained check code behind the data frame section to obtain the signal data frame.
5. The cable closure-based communication monitoring system for power transmission lines of claim 4, wherein the analysis of the communication signal by the signal analysis module comprises:
marking all signal data frames in the communication signal, acquiring a data frame section consisting of a unit frame of a-1 bit at the tail of each signal data frame, and marking the acquired data frame section as a cyclic redundancy check code of the corresponding signal data frame;
dividing the signal data frame by a binary sequence used for acquiring a cyclic redundancy check code corresponding to the signal data frame, and if a remainder exists in a result, indicating that an error occurs in the signal data frame in a transmission process; if the result has no remainder, it indicates that no error occurs in the signal data frame during transmission.
6. The optical cable closure-based communication monitoring system for power transmission lines of claim 5, wherein the signal modification module performs signal modification on the signal data frame with errors, and the signal modification module performs the signal modification on the signal data frame with errors, and comprises:
acquiring the marked signal data frames with errors, and reading all unit frames and corresponding sequences in the signal data frames;
obtaining a binary remainder obtained in the analysis process of the signal data frame;
according to the obtained digit of the binary remainder, marking the unit frames at the corresponding positions in the unit frames ordered from low order to high order in the signal data frame; sequentially changing all unit frames, dividing the changed signal data frames by the binary sequence to obtain a result, and judging whether the obtained result has a remainder or not;
when no remainder exists in the result, marking the corresponding unit frame;
acquiring all marked unit frame information, summarizing the unit frame information, and returning to the communication base station for sending the communication signal; acquiring communication contents corresponding to the unit frame according to the unit frame information, summarizing the communication contents, and retransmitting the communication contents to the target communication base station;
and replacing the communication content of the unit frame at the corresponding position in the signal data frame with the communication content to finish the correction of the communication signal.
7. The optical cable closure-based communication monitoring system for power transmission lines of claim 6, wherein the unit frame change manner comprises: if the unit frame is "0", it is changed to "1", and if the unit frame is "1", it is changed to "0".
8. The cable closure-based power transmission line communication monitoring system of claim 6, wherein the unit frame information includes a signal data frame where the unit frame is located and a position in the signal data frame.
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