CN113300739A - Working face ultra-long distance communication module - Google Patents
Working face ultra-long distance communication module Download PDFInfo
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- CN113300739A CN113300739A CN202110520676.3A CN202110520676A CN113300739A CN 113300739 A CN113300739 A CN 113300739A CN 202110520676 A CN202110520676 A CN 202110520676A CN 113300739 A CN113300739 A CN 113300739A
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- 238000004891 communication Methods 0.000 title claims abstract description 184
- 238000010586 diagram Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 abstract description 7
- 238000012795 verification Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0847—Transmission error
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
Abstract
The invention discloses a working face ultra-long distance communication module, aiming at solving the problem of ultra-long distance communication between a coal mine underground working face and a ground background. The module consists of a power line carrier module, a near field communication module, a large-capacity storage module and a communication control module. The communication control module selects proper carrier communication speed according to the distance of a power supply line, and simultaneously, the module adopts communication modes such as RS485, CAN, Ethernet and the like to communicate with various working devices on a working surface, the communication module calculates the error rate in real time, dynamically adjusts the carrier communication speed according to the communication error rate, adopts large-capacity cache and sets verification, and receives a complete message to communicate with the working surface devices, so that the problem of communication between the remote working devices on the working surface and an upper computer is solved.
Description
Technical Field
The invention relates to the technical field of power system communication, in particular to a working face ultra-long distance communication module.
Background
With the increasing power of coal mining units of a fully mechanized working face under a coal mine, many coal mines adopt a coal mining mode of a stope face, and considering from the aspects of manpower and material resources, the construction of a substation on the working face is not economical, so that the requirement for the ultra-long distance of the working face is continuously increased, but the power supply distance is increased, if the quality of power supply, the safety, reliability and economy of the power supply cannot be ensured, the machinery of the working face cannot normally operate due to the difficulty in starting the motor, and the motor can be burnt due to the fact that the terminal voltage is too low, so that the machine cannot be replaced. Therefore, it is necessary to research the ultra-long distance technology of the underground working face, the ultra-long distance communication module is installed in the working face working equipment, and aims to solve the problem of remote communication of the working face working equipment, the most suitable communication medium for remote communication is an optical fiber, but the mining working face is far away from the main roadway, no laid optical fiber network is available, the optical fiber is difficult to erect and break in the mining working roadway, the optical fiber is difficult to recover in mining, so the optical fiber communication mode is practically impossible, the communication modes such as serial ports of RS485, CAN and the like are adopted, theoretically, the longest transmission distance CAN reach 1.2 kilometers when the communication speed is 100Kbps or less, but the transmission distance is different due to the transmission characteristics of the chip and the cable in practical application, the theoretical maximum transmission distance is difficult to reach, and even 3 kilometers of ultra-long distance communication is impossible, so the development of reliable communication is urgently needed, Low cost telecommunications technology.
Disclosure of Invention
Technical problem to be solved
Aiming at the problems of the existing working surface ultra-long distance communication, a working surface ultra-long distance communication module is provided.
(II) technical scheme
In order to realize the ultra-long distance communication of the working face, the invention provides the following technical scheme: a working face ultra-long distance communication module comprises a power carrier module, a short distance (including communication modes such as an RS485 serial port, a CAN, an Ethernet and the like) communication module, a large-capacity storage module and a communication control module.
As a preferred technical method system of the invention, the power carrier module is used for communication between the substation of the mining area and the remote working surface, and the communication medium is a carrier line. The power carrier module adopts a low-voltage carrier line, the effective communication rate can reach 60Mbps at most, and 3-kilometer ultra-long-distance communication can be realized by reducing the communication rate to 0.1 Mbps.
As a preferred technical method system, the near field communication module is connected with the communication control module through a bus, is used for near field communication of a working face, is communicated with each working device of the working face through communication modes such as an RS485 serial port, a CAN, an Ethernet and the like, and sends a message to a near field communication network.
As a preferred technical method system of the invention, the large-capacity storage module is connected with the communication control module through a bus and is used for storing the communication message sent by the upper computer and the communication message sent by the working equipment of the storage working surface, thereby ensuring that each frame of effective communication message can be processed. When the complete communication message sent by the upper computer and the complete communication message sent by the working equipment are received and are not processed in time, the complete communication message is stored in the large-capacity storage module, and the complete communication message is deleted after being processed.
As a preferred technical method system of the invention, the communication control module is respectively connected with the power line carrier module, the near field communication module and the large-capacity storage module through an internal bus. The communication control module calculates the error rate of the power carrier module in real time, dynamically adjusts the carrier communication rate according to the communication error rate, reduces the communication rate when the communication error rate is larger than a certain value, and improves the communication rate when the communication error rate is smaller than the certain value, so that the communication rate of the power carrier module is controlled. The communication control module stores the communication message sent by the upper computer and the communication message sent by the storage working equipment to the large-capacity storage module, and controls the short-distance communication module to communicate with each working equipment on the working surface.
As a preferred technical method system of the invention, the working steps of the working face ultra-long distance communication module are as follows:
(1) determining the communication distance between specific working faces, the communication speed of the power carrier modules and the specific number of the short-distance communication working devices, and adopting the number of RS485 bus communication devices, communication addresses and serial port communication baud rates; the number of CAN bus communication devices, communication addresses and communication baud rates are adopted; adopting the number of Ethernet bus communication devices and the IP communication address of specific devices;
(2) drawing a specific communication connection diagram;
(3) according to the communication connection diagram, the power carrier modules of the working surface ultra-long distance communication module are electrically connected;
(4) according to the communication connection diagram, the working face ultra-long-distance near-distance communication module is electrically connected with specific working face working equipment;
(5) and setting the communication address of each specific communication device, and setting a specific communication rate if the communication baud rate needs to be set.
(III) remarkable Effect
Compared with the prior art, the working face ultra-long distance communication module provided by the invention is directly used for coal mine long distance working face communication, has a small volume and is convenient to install on site; communication relay and optical cables are not needed, 3-kilometer long-distance communication is achieved, and the method can be applied to working scenes such as coal mine working face ultra-long-distance power supply. The method has the following remarkable effects:
1. the module has simple structure, convenient installation and low cost.
2. The module realizes remote communication by using a low-voltage communication line, has small volume and is easy to install in working surface working equipment.
3. The communication module calculates the error rate in real time, can dynamically adjust the carrier communication rate according to the size of the communication error rate, sets a high-capacity communication cache region and checks, and communicates with the working equipment after receiving a complete message, so that the reliability of remote communication and the real-time performance of communication are improved.
4. The problem of communication between ground backstage and long distance working face equipment is solved.
Drawings
Fig. 1 is a schematic circuit diagram of a working plane ultra-long distance communication module according to the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown and described, and in which it is to be understood that all of the matters herein are shown and described, simply by way of illustration of the invention.
Fig. 1 is a schematic circuit diagram of a working plane ultra-long distance communication module according to an embodiment of the present invention:
(1) the power carrier module shown in the figure has the highest communication rate of 200Mbps and the highest effective communication rate of 60Mbps, and can realize 3-kilometer ultra-long-distance communication by reducing the communication rate to 0.1Mbps and adopting a low-voltage power carrier line.
(2) In the RS485 serial port communication module, the highest communication rate can be set to 19200bps, the lowest communication rate can be set to 1200bps, the communication module is provided with a 120-ohm matching resistor and can be accessed and withdrawn, and when the serial port communication module is installed at the head end or the tail end of a communication bus, the matching resistor needs to be accessed for communication stability.
(3) In the figure, the CAN communication module supports various common baud rates of 10, 20, 50, 100 and the like, the communication module is provided with a 120-ohm matching resistor which CAN be accessed and withdrawn, and when the CAN communication module is installed at the head end or the tail end of a communication bus, the matching resistor needs to be accessed for communication stability.
(4) In the figure, the Ethernet communication module has a communication speed of 10 mps-100 mps for self-adaptation.
(5) The large-capacity storage module shown in the figure adopts a large-capacity flash chip to store the downlink message of the upper computer and the uplink message of the working equipment, and the messages adopt a queuing mode and first-in first-out to ensure that each correctly received complete message is discarded after being processed.
(6) The communication control module shown in the figure controls the power carrier module, the near-field communication module and the large-capacity storage module, the communication control module calculates the error rate of the power carrier module in real time, when the communication error rate is larger than a certain value, the communication speed is reduced, when the communication error rate is smaller than the certain value, the communication speed is improved, the carrier communication speed is dynamically adjusted according to the communication error rate, and the communication performance and the data integrity during long-distance communication are ensured.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically connected or connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it;
although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A working face ultra-long distance communication module comprises a power carrier module, a short distance (including communication modes such as an RS485 serial port, a CAN, an Ethernet and the like) communication module, a large-capacity storage module and a communication control module.
2. The over-the-distance communication module for a working surface of claim 1, wherein: the power carrier module adopts a low-voltage carrier line, the effective communication rate can reach 60Mbps at most, and 3-kilometer ultra-long-distance communication can be realized by reducing the communication rate to 0.1 Mbps.
3. The over-the-distance communication module for a working surface of claim 1, wherein: the near field communication module is connected with the communication control module through a bus, and the communication control module sends the message to the near field communication network through communication modes such as RS485, CAN, Ethernet and the like.
4. The over-the-distance communication module for a working surface of claim 1, wherein: the large-capacity storage module is connected with the communication control module through a bus, when a complete communication message sent by the upper computer and a complete communication message sent by the working equipment are received and are not processed in time, the complete communication message and the complete communication message are stored in the large-capacity storage module, and the complete communication message are deleted after the messages are processed.
5. The over-the-distance communication module for a working surface of claim 1, wherein: the communication control module is connected with the power carrier module, the near field communication module and the large-capacity storage module through an internal bus, the communication control module calculates the error rate of the power carrier module in real time, the carrier communication rate is dynamically adjusted according to the communication error rate, the communication rate is reduced when the communication error rate is larger than a certain value, and the communication rate is improved when the communication error rate is smaller than a certain value.
6. A working surface ultra-long-range communication module using the working surface ultra-long-range communication module according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
(1) determining the communication distance between specific working faces, the communication speed of the power carrier modules and the specific number of the short-distance communication working devices, and adopting the number of RS485 bus communication devices, communication addresses and serial port communication baud rates; the number of CAN bus communication devices, communication addresses and communication baud rates are adopted; adopting the number of Ethernet bus communication devices and the IP communication address of specific devices;
(2) drawing a specific communication connection diagram;
(3) according to the communication connection diagram, the power carrier modules of the working surface ultra-long distance communication module are electrically connected;
(4) according to the communication connection diagram, the working surface ultra-long distance short distance communication module is electrically connected with the specific working surface working equipment;
(5) and setting the communication address of each specific communication device, and setting a specific communication rate if the communication baud rate needs to be set.
7. The over-the-distance communication module for a working surface of claim 6, wherein: in the step (5), the working surface ultra-long distance communication module CAN dynamically adjust RS485 and CAN communication baud rates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110520676.3A CN113300739A (en) | 2021-05-13 | 2021-05-13 | Working face ultra-long distance communication module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110520676.3A CN113300739A (en) | 2021-05-13 | 2021-05-13 | Working face ultra-long distance communication module |
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| CN207283546U (en) * | 2017-10-25 | 2018-04-27 | 广州美高立电气有限公司 | A kind of gateway based on broadband power line carrier communication |
| CN108154675A (en) * | 2017-12-29 | 2018-06-12 | 武汉中原电子信息有限公司 | Electric Power Data Collector and acquisition system |
| CN110995314A (en) * | 2019-12-05 | 2020-04-10 | 国网天津市电力公司电力科学研究院 | Low-voltage broadband power line carrier communication comprehensive test system |
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2021
- 2021-05-13 CN CN202110520676.3A patent/CN113300739A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102832963A (en) * | 2012-09-05 | 2012-12-19 | 珠海中慧微电子有限公司 | Rate adaptive system and method for power line carrier spread spectrum communication |
| CN103812764A (en) * | 2012-11-09 | 2014-05-21 | 江苏省电力公司连云港供电公司 | Electrical monitoring equipment multiprotocol gateway |
| CN203689676U (en) * | 2014-01-23 | 2014-07-02 | 国家电网公司 | Collector with remote power line carrier upgrading function |
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| CN107103743A (en) * | 2017-04-19 | 2017-08-29 | 新开普电子股份有限公司 | A kind of carrier wave integrates the message processing method of copy controller |
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