阅读说明：本技术 一种基于电力线载波通信的光纤断点续接方法 (Optical fiber breakpoint splicing method based on power line carrier communication ) 是由 徐剑英 李亮 司良振 张广磊 于涛 丁元杰 季册 于 2021-01-05 设计创作，主要内容包括：本发明提供一种基于电力线载波通信的光纤断点续接方法,光纤上数据通过交换机发送到载波机1,载波机使用特有的数据压缩、数据拼帧、过滤算法,将数据通过电力线载波通信技术传输传输到对端同相位载波机2处,该载波机经过与载波机1相反的解压处理过程,将数据通过交换机发送到光纤上,实现光纤断点续接功能。本发明的有益效果为：无需花费大量成本重新铺设光纤,依靠现有的电力线为介质进行通信,实现成本的节约,具有推广意义。(The invention provides an optical fiber breakpoint continuous connection method based on power line carrier communication, wherein data on an optical fiber is sent to a carrier machine 1 through a switch, the carrier machine transmits the data to an opposite-end same-phase carrier machine 2 through a power line carrier communication technology by using a specific data compression algorithm, a data framing algorithm and a filtering algorithm, and the carrier machine sends the data to the optical fiber through the switch through a decompression processing process opposite to that of the carrier machine 1, so that the function of optical fiber breakpoint continuous connection is realized. The invention has the beneficial effects that: need not to spend a large amount of costs and lay optic fibre again, rely on current power line to communicate as the medium, realize the saving of cost, have popularization meaning.)

1. An optical fiber breakpoint connection method based on power line carrier communication is characterized by comprising the following steps:

step 1: the message on the optical fiber is sent to the carrier machine 1 through the switch, and the carrier machine 1 starts processing at the MAC layer of the received message network packet to realize the full transparent forwarding;

step 2: judging whether the message protocol type is a message of a necessary transmission type to accept or reject, if so, realizing the compression of the frame message by the carrier machine through a compression algorithm, meanwhile, carrying out frame splicing processing on a plurality of frames of messages for effectively utilizing the length of a load block transmitted by the carrier, and entering the step 3 when the length of the load block is met; otherwise, filtering is manually set, the message is filtered, the bandwidth requirement is reduced, and the step 3 is carried out;

and step 3: the carrier machine 1 sends the processed message to a power line by using an HPLC carrier communication technology;

and 4, step 4: the carrier machine 2 receives the sent message, splits the multi-frame message, and decompresses the split message by using the compression algorithm corresponding to the step 1;

and 5: the carrier machine 2 successfully sends the processed message to the switch through the network port.

Technical Field

The invention relates to the field of medium-voltage power distribution network communication, in particular to an optical fiber breakpoint splicing method based on power line carrier communication.

Background

At present, a power distribution network is in a hand-in-hand network frame structure, and an optical fiber communication network can be built by using an industrial Ethernet switch and an EPON passive optical network technology respectively to form a reliable communication network with optical fiber looped. However, in practical applications, in the process of laying optical fibers due to various practical reasons, under the condition that laying cannot be performed on certain road sections or distribution network nodes, a breakpoint between two sections of optical fibers is formed.

In optical fiber medium communication, a large amount of data is transmitted, and the requirement on bandwidth is very strict, which is a technical barrier that other technical means are difficult to directly replace optical fiber communication. In the power department, the bandwidth distribution of a backbone network generally takes 2Mbps as a reference, and in order to accurately grasp the actual bandwidth requirement in communication, related tools are used at the tail end of an outlet line of a certain transformer substation, namely at a breakpoint of an optical fiber, so that the data volume is monitored in real time, and the bandwidth of 320Kbps is required under the condition of a normal peak value.

The existing means for solving the problem that optical fibers are not laid has a wireless communication technology, such as wireless public network communication, a GPRS technology is mainly used, but the GPRS has the problems of large transmission delay and disconnection, and in consideration of the safety problem, a newly-added physical isolation device is needed, but the carrier wave machine technology plays a role in optical fiber breakpoint splicing, so that the carrier wave machine technology is used as an optical fiber substitute, has the advantage of low construction cost, and does not have the problems of large delay and safety compared with the GPRS.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides an optical fiber breakpoint continuous connection method based on power line carrier communication, which utilizes an HPLC technology, uses a photoelectric conversion device-a switch at the optical fiber breakpoint and is connected with a carrier machine through a network port to realize the communication of a section without an optical fiber in a distribution network line, and the signals sent and received by the HPLC technology in the use process meet the HPLC standard requirements.

In order to achieve the above object, the present invention provides an optical fiber breakpoint continuous connection communication method for a power line carrier, which specifically includes the following steps:

step 1: the message on the optical fiber is sent to the carrier machine 1 through the switch, and the carrier machine 1 starts processing at the MAC layer of the received network packet to realize full transparent forwarding;

the information transmitted on the optical fiber is not only data or other information of a specific terminal, so that complete forwarding is firstly required to be realized after the carrier machine receives the data through the network port, namely, the data is completely forwarded to the power line from the MAC layer of one packet of Ethernet message, and full transparent transmission is realized;

step 2: the carrier machine 1 judges whether the message protocol type is an essential transmission type, if the message protocol type is the essential transmission type, the carrier machine realizes the compression of the frame message through a compression algorithm, simultaneously carries out frame splicing processing on a plurality of frames of messages for effectively utilizing the length of a load block transmitted by a carrier, and enters the step 3 when the length of the load block is met; otherwise, filtering is manually set, the message is filtered, the bandwidth requirement is reduced, and the step 3 is carried out;

all types of messages transmitted on the optical fiber are not actually required, so the method supports manual selection, and the unneeded types of messages are artificially filtered to reduce the bandwidth requirement; because of the bandwidth requirement, after a frame of message is received, the message is packed and data compression is carried out, so that the number of transmission bytes on the power line is reduced; and then according to the length of each packed frame and the length of each load block during HPLC power line transmission, comprehensively calculating and merging the compressed multi-frame messages for transmission, and maximally utilizing the maximum data volume transmitted during each communication on the power line.

And step 3: the carrier machine 1 sends the processed message to a power line by using an HPLC carrier communication technology to realize full transparent transmission;

the carrier machine transmits the packed compressed data packet to the carrier machine at the opposite end through the power line, and the premise here is that the two carrier machines are on the same phase line.

And 4, step 4: the carrier machine 2 receives the sent message, splits the multi-frame message, and decompresses the split message by using the compression algorithm corresponding to the step 1;

and 5: the carrier machine 2 successfully sends the processed message to the switch through the network port.

And after receiving the data, the carrier machine splits the multi-frame message, decompresses the split message, and finally successfully transmits the decompressed message to the switch, so that the optical fiber breakpoint is spliced through power line carrier communication.

The two-end carrier machines have consistent processing methods for the messages forwarded by the switch on the light, are in peer-to-peer communication and have no master-slave division.

The invention has the beneficial effects that: the optical fiber is not required to be laid again at a large cost, the existing power line is used as a medium for communication, cost is saved, and the method also has popularization significance.

Drawings

FIG. 1 is a schematic block diagram of a system for a power line carrier communication-based optical fiber breakpoint connection method according to the present invention;

fig. 2 is a flowchart of a method for implementing optical fiber splicing through carrier communication according to an embodiment of an optical fiber splicing method based on power line carrier communication in the present invention.

Detailed Description

In order to clearly illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific embodiments. All other embodiments, which can be obtained by others skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Fig. 1 is a schematic diagram of the implementation of the method, where an optical fiber between two devices is damaged or not laid, data on the optical fiber reaches a carrier 1 through an exchange 1, is sent to a cable through a coupler after being processed, and reaches the carrier 2 through the coupler at the opposite end of the cable, and is sent to the optical fiber through the exchange 2 after being processed.

As shown in fig. 2, the steps of the optical fiber breakpoint connection method based on power line carrier communication according to the embodiment of the present invention are as follows:

step 1: the message on the optical fiber is sent to the carrier machine 1 through the switch, and the carrier machine 1 starts processing at the MAC layer of the received network packet to realize full transparent forwarding;

step 2: judging whether the message protocol type is a message of a necessary transmission type to accept or reject, if so, realizing the compression of the frame message by the carrier machine through a compression algorithm, meanwhile, carrying out frame splicing processing on a plurality of frames of messages for effectively utilizing the length of a load block transmitted by the carrier, and entering the step 3 when the length of the load block is met; otherwise, filtering is manually set, the message is filtered, the bandwidth requirement is reduced, and the step 3 is carried out;

and step 3: the carrier machine 1 sends the processed message to a power line by using an HPLC carrier communication technology to realize full transparent transmission;

and 4, step 4: the carrier machine 2 receives the sent message, splits the multi-frame message, and decompresses the split message by using the compression algorithm corresponding to the step 1;

and 5: the carrier machine 2 successfully sends the processed message to the switch through the network port.

The two-end carrier machines have consistent processing methods for the messages forwarded by the switch on the light, are in peer-to-peer communication and have no master-slave division.

The method is not only suitable for power lines, but also suitable for mixed lines such as ground cables, overhead lines and the like.

The foregoing detailed description of the embodiments of the present invention has been presented for purposes of illustration and description, and is intended to be exhaustive or to limit the invention to the precise embodiments disclosed.