CN108418904B - Ethernet communication control device and fully-mechanized mining face communication network - Google Patents
Ethernet communication control device and fully-mechanized mining face communication network Download PDFInfo
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- 238000005065 mining Methods 0.000 title abstract description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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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
- H04L2012/40221—Profibus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
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Abstract
The invention relates to an Ethernet communication control device and a fully-mechanized mining face communication network, belonging to the field of Ethernet. An Ethernet communication control device comprises an Ethernet switch chip, two intrinsically safe isolation coupling units which are respectively in communication connection with two-core physical layer interfaces of the Ethernet switch chip, and a communication function management configuration unit which is in communication connection with the Ethernet switch chip; signals sent by two-core physical layer interfaces of the Ethernet switch chip are connected to an external cable or a cable connector after passing through the intrinsically safe isolation coupling unit, and the two-core physical layer interfaces work in a master-slave mode, wherein clocks of the slave two-core physical layer interfaces follow clocks of the master two-core physical layer interfaces. The invention adopts two-core interfaces, and the bandwidth of the working face communication network formed by the two-core interfaces can reach 100Mbp,1000Mbps or even higher.
Description
Technical Field
The present invention relates to the field of ethernet, and in particular, to an ethernet communication control device and a fully-mechanized mining face communication network.
Background
With the continuous increase of the requirements of automation and intellectualization of fully mechanized mining face equipment and systems of coal mines, the requirements of mass data transmission exist among hundreds of hydraulic support controllers, a large number of IP cameras and various sensing monitoring devices in the face and among the monitoring devices penetrating through the whole face to the device lane monitoring host. At present, various wired and wireless communication technologies including common industrial Ethernet are applied to working surfaces after various explosion-proof design measures are adopted at home and abroad. As shown in CN102136974A, CN102780597a and CN 106507051a, a standard single-mode and multimode optical fiber ethernet technology such as 100Mbps for four-core electrical interface, 1000Mbps for 8-core electrical interface, and 100BASE-FX is adopted, a power line carrier communication system based on standards such as homeplug av and the like as shown in CN203747819U and CN103763522A, and a working face wireless system as shown in CN104506799A, CN205610955U and the like are already applied to network communication between devices and equipment on a working face.
However, coal mines are a relatively special environment, particularly the explosive gas and coal dust existing on fully mechanized coal faces, and the environment is severe, so that a plurality of special requirements are applied to communication equipment and systems. The communication distance between network nodes of the working face is generally shorter and only a few meters to tens of meters, but the number of the nodes is more, and the number of the connecting cables is as high as hundreds, so that the industrial Ethernet technology adopting the electrical interfaces of the 4-core 100Mbps and the 8-core 1000Mbps is used for forming a system by connecting multiple stages (such as hundreds of stages between bracket controllers) under the working face environment with frequent water spraying, high humidity and serious coal slime pollution, and the cost of the cables and the connectors is higher due to the fact that the required cable cores and connectors are more in number and poorer in reliability. The working face optical fiber communication is easy to use due to the fact that the optical interface connector is easily affected by coal dust and coal slime pollution, and after fiber breakage, special optical fiber tools are needed for connection, so that the optical fiber communication is inconvenient to use in the pit, and the cost is high. The power consumption of the power line carrier based system is 5-10 times of that of the common Ethernet interface, which is unfavorable for the intrinsically safe explosion-proof design of the system, the number of the single network domain accommodating nodes is low, and the bandwidth is seriously reduced when the number of the nodes is more in the bus broadcasting type transmission mode. The wireless multi-node transmission system is generally low in bandwidth, the available bandwidth can only reach tens of megabytes, and in fully-mechanized mining face application with dense metal equipment and dynamic arrangement, connection reliability is weak and transmission delay is large.
Therefore, there is a need for a bandwidth communication technology with a small number of interface cores, up to 100mbp,1000mbps and even higher, to support a more simple and easy-to-use construction, and a more reliable and adaptable universal or multi-purpose work surface network application. .
Disclosure of Invention
The invention aims to solve the problems, and provides an Ethernet communication control device and a fully-mechanized mining face communication network, wherein a two-core interface is adopted, and the bandwidth can reach 100Mbp,1000Mbps or higher.
The purpose of the invention is realized in the following way:
an ethernet communication control device, comprising:
an Ethernet switch chip having at least two core physical layer interfaces supporting BroadR-Reach or 100BASE-T1 or 1000 BASE-T1;
two intrinsically safe isolation coupling units which are respectively in communication connection with two-core physical layer interfaces of the Ethernet switch chip; the method comprises the steps of,
a communication function management configuration unit in communication connection with the ethernet switch chip, where the communication function management configuration unit is used for performing management configuration on the two-core physical layer interface and the ethernet switch function;
signals sent by two-core physical layer interfaces of the Ethernet switch chip are connected to an external cable or a cable connector after passing through the intrinsically safe isolation coupling unit, and the two-core physical layer interfaces work in a master-slave mode, wherein clocks of the slave two-core physical layer interfaces follow clocks of the master two-core physical layer interfaces.
Preferably, the two-core physical layer interface is a two-core physical layer interface chip based on BroadR-Reach or 100BASE-T1 or 1000BASE-T1, and the two-core physical layer interface chip is connected with the ethernet switch chip through an interface of MII (Medium Independent Interface, media independent interface) type; or, the two-core physical layer interface is an integrated two-core physical layer interface based on a BroadR-Reach or 100BASE-T1 or 1000BASE-T1, and the integrated two-core physical layer interface is embedded in the ethernet switch chip. The interfaces of the MII type are commonly known as MII, RMII, SMII, SSMII, SSSMII, GMII, RGMII, SGMII, TBI, RTBI, XGMII and the like.
Preferably, the communication function management configuration unit is a single chip microcomputer or an embedded CPU;
when the communication function management configuration unit is a singlechip, the Ethernet switch chip is provided with at least one MII interface, RMII interface or SMI interface for being connected with the singlechip, and the singlechip is in communication connection with the Ethernet switch chip through the MII interface, the RMII interface or the SMI interface, so that the communication connection with two-core physical layer interfaces is realized; or the singlechip is directly communicated with the Ethernet switch chip and the two-core physical layer interfaces through an SPI interface or an SMI interface;
when the communication function management configuration unit is an embedded CPU, the embedded CPU is integrated in an internal processor of the ethernet switch chip.
Preferably, the intrinsically safe isolation coupling unit is a high-frequency transformer, and the power frequency withstand voltage between the primary side and the secondary side of the high-frequency transformer is greater than the intrinsic safety standard specified value; or,
the intrinsically safe isolation coupling unit is a capacitive isolation and signal coupler which is respectively connected in series on two core wires of the two-core physical layer interface, and the capacitive isolation and signal coupler is formed by connecting at least two solid capacitors with withstand voltage greater than an intrinsic safety standard specified value in series.
Preferably, the ethernet switch chip further has at least one interface for extending communication and monitoring applications.
Preferably, the device is powered by an intrinsically safe power source.
The invention also discloses a fully-mechanized coal face communication network, which is formed by connecting at least two Ethernet communication control devices in series, wherein two adjacent Ethernet communication control devices are connected in series through the two-core physical layer interfaces, one of the two-core physical layer interfaces connected in series is a main two-core physical layer interface, and the other is a secondary two-core physical layer interface.
Preferably, the ethernet communication control devices connected in series are powered by one-path intrinsically safe power supply or by multiple paths of mutually isolated intrinsically safe power supplies.
The beneficial effects of the invention are as follows:
1) The two-core physical layer interface of the Ethernet communication control device is connected with the intrinsically safe isolation coupling unit, and can be directly connected with the external two-core communication interface to form a fully-mechanized coal face communication network, so that the requirement of the explosion-proof standard of a coal mine can be met without independently setting the intrinsically safe isolation coupling device.
2) The network technology used by the Ethernet communication control device of the invention is except the physical layer interface, other MAC layers and other network protocol layers are completely the same as the common Ethernet, and are completely transparent and compatible for the upper network application, thus exerting all the advantages of the Ethernet communication technology;
3) Compared with the conventional Ethernet technology, the comprehensive working face communication network composed of the Ethernet communication control device can realize broadband communication of up to 100Mbps or 1000Mbps only by electrically connecting two cores, and the number of the cores of the communication cable and the connector required can be reduced by half (relative to a 4-core 100BASE-TX Ethernet) or three quarters (relative to an 8-core 1000BASE-T Ethernet), so that the connection is simplified, the application reliability of the working face network is improved, and the use and maintenance cost is reduced;
4) The fully-mechanized mining face communication network consists of the Ethernet communication control devices, and each Ethernet communication control device can supply power by adopting different intrinsically safe power supplies.
Drawings
Fig. 1 is a schematic diagram of an ethernet communication control device according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram showing an embodiment of a communication function management configuration unit in the Ethernet communication control device of the invention;
fig. 3 is a schematic structural diagram of a second embodiment of an ethernet communication control device of the present invention;
fig. 4 is a schematic structural diagram of a third embodiment of the ethernet communication control device of the present invention;
fig. 5 shows a schematic structural diagram of an embodiment of the fully mechanized face communication network of the present invention.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
First, the present invention proposes an ethernet communication control device 100.
In the first embodiment, as shown in fig. 1, the ethernet communication control device 100 includes an ethernet switch chip 101, two intrinsically safe isolation coupling units 105 and 106, and a communication function management configuration unit 106.
The Ethernet switch chip 101 has at least two core physical layer interfaces 103, 104 supporting either BroadR-Reach or 100BASE-T1 or 1000 BASE-T1. Specifically, the two-core physical layer interfaces 103 and 104 may be two-core physical layer interface chips (such as interface chips with model numbers 88Q2110 and 88Q 2112) based on BroadR-Reach or 100BASE-T1 or 1000BASE-T1, and are connected to the ethernet switch chip 101 through GMII, RGMII or SGMII; alternatively, the two-core physical layer interfaces 103, 104 may be integrated two-core physical layer interfaces based on BroadR-Reach or 100BASE-T1 or 1000BASE-T1 embedded inside the ethernet switch chip 101.
The two intrinsically safe isolation coupling units 105, 106 are communicatively connected with the two-core physical layer interfaces 103, 104 of the ethernet switch chip 101, respectively.
Specifically, the intrinsically safe isolation coupling units 105 and 106 may be high-frequency transformers, but the power frequency withstand voltage between the primary side and the secondary side of the high-frequency transformers must be greater than the intrinsic safety standard specified value. The intrinsically safe isolation coupling units 105 and 106 may also adopt two capacitance isolation and signal couplers respectively connected in series on two core wires of the two-core physical layer interfaces 103 and 104, as shown in fig. 2, where the capacitance isolation and signal couplers are formed by connecting at least two solid capacitors with withstand voltage greater than the intrinsic safety standard specified value in series, two capacitors CP are connected in series on P signal wires corresponding to the two-core physical layer interfaces 103 and 104, two capacitors CN are connected in series on N signal wires corresponding to the two-core physical layer interfaces 103 and 104, and both the capacitors CP and the capacitors CN are solid capacitors (such as ceramic, mica or film capacitors); the rated voltage values of the capacitor CP and the capacitor CN at least meet the power frequency voltage which enables the voltage between P-P 'and the voltage between N-N' to withstand the standard of an intrinsic safety circuit. If it is necessary to further enhance the safety reliability of the intrinsically safe isolated counter type fault, more solid state capacitors may be employed in series.
The communication function management configuration unit 106 is configured to perform management configuration on the two-core physical layer interfaces 103 and 104 and the ethernet switching function.
Specifically, the communication function management configuration unit 106 is a single-chip microcomputer or an embedded CPU, and is configured to implement an application extension function.
When the communication function management configuration unit 106 is a single chip microcomputer, the ethernet switch chip 101 is further provided with at least one MII interface, RMII interface or SMI interface for connecting with the single chip microcomputer, and the single chip microcomputer realizes communication connection with the ethernet switch chip 101 through the MII interface, RMII interface or SMI interface, thereby realizing communication connection with the two-core physical layer interfaces 103 and 104; or, the singlechip is directly connected with the Ethernet switch chip 101 and the two-core physical layer interfaces 103 and 104 through an SPI interface or an SMI interface;
when the communication function management configuration unit 106 is an embedded CPU, the embedded CPU is integrated in an internal processor of the ethernet switch chip 101 (such as an ARM Cortex-M7 inside 88Q5050 or an ARM Cortex R4 embedded in BCM 89501).
The signals sent by the two-core physical layer interfaces 103, 104 of the ethernet switch chip 101 pass through the intrinsically safe isolation coupling units 105, 106 and then are connected to external cables or cable connectors (i.e. as two-core ethernet serial ports 109, 108). Since the internal principle of all two-core physical layer interfaces 103 and 104 based on PAM3 coding and digital echo filtering requires that the two interfaces must be synchronized by master-slave mode to communicate when the two interfaces are interconnected, when multiple ethernet communication control devices 100 of the same kind are applied in series, the two-core physical layer interfaces 103 and 104 are configured to operate in a master-slave mode, so that the clocks of the slave two-core physical layer interfaces follow the clocks of the master two-core physical layer interfaces.
The ethernet communication control device 100 is powered by an intrinsically safe power source, and all exposed ports thereof are intrinsically safe and explosion-proof.
In the second embodiment, based on the first embodiment, as shown in fig. 3, an ethernet switch chip 101 with eight interfaces is used in the ethernet communication control device 100.
In comparison with the first embodiment, the ethernet switch chip 101 has five more interfaces for connecting network devices of the working surface field application. The five interfaces may be integrated or external to communicate with the ethernet switch chip 101.
Specifically, in the second embodiment, four interfaces are four-way integrated two-core hundred-mega physical layer interfaces 110 for accessing various network devices 112 (such as cameras) facing the application of the working surface, and one interface is a standard hundred-mega ethernet interface 111 (four-core) for accessing the AP (wireless Access node) to the WIFI of the working surface.
In the third embodiment, based on the first embodiment, as shown in fig. 4, the ethernet communication control device 100 employs a multiport ethernet switch chip 101 (such as a chip with a model number of BCM8950 x) integrated with a four-way two-core hundred megabyte BroadR-Reach interface, and the ethernet switch chip 101 is communicatively connected to a stand electro-hydraulic single chip 1061 through an MII interface (or an RMII interface).
The two interfaces 103 and 104 in the two-core hundred megabit BroadR-Reach interface integrated inside the ethernet switch chip 101 are configured as a master-slave working mode, and can be respectively connected with the hydraulic support controllers of the same type of the left adjacent frame and the right adjacent frame, so as to realize complete interchange and serial connection application between the hydraulic support controller products.
The support electrohydraulic control singlechip 1061 is used for providing configuration and management functions for the Ethernet switch chip 101 and two-core communication, and can also bear the functions of basic input and output program control and field bus interface control of the hydraulic support electrohydraulic controller shown by a dashed line frame in the figure.
Because the two-core hundred megabyte Broad R-Reach interface and the 100Base-T1 interface are Ethernet physical layers mainly facing to automobile application, the two interfaces can be directly interchanged and interconnected, and therefore the technical scheme of a similar bracket controller based on 100BASE-T1 can be covered by the embodiment. Likewise, the two-core physical layer interfaces 103 and 104 in the technical scheme can be replaced by independent or integrated 1000Mbps interfaces (such as 88Q2110 or 88Q 2112) based on 1000BASE-T1, so as to realize the design of the hydraulic support controller with two-core gigabit connection. In addition, the same implementation example can be implemented with an external BroadR-Reach interface chip or a 100BASE-T1 interface chip, such as BCM89810, DP83TC811, TJA1100 or TJA1102, using a commercially available common ethernet switch chip 101 with an xMII interface.
The invention further provides a fully-mechanized coal mining face communication network.
In an embodiment, as shown in fig. 5, the fully-mechanized face communication network 200 is formed by connecting at least two ethernet communication control devices 100 according to any one of the foregoing embodiments in series, and the two-core network switching communication node 201 shown in fig. 5 is a conceptual abstract term of the ethernet communication control device 100 in the foregoing embodiment, and may be any one of the ethernet communication control devices 100 in fig. 1, 3, and 4.
Two core physical layer interfaces of BroadR-Reach, 100BASE-T1 or 1000BASE-T1 are adopted between the two adjacent two core network switching communication nodes 201 to be connected in series, one of the two core physical layer interfaces connected in series is a main two core physical layer interface, the other is a slave two core physical layer interface, the two core network of the whole series structure can penetrate from one end of the working surface to the other end of the working surface, and each node 201 (i.e. the ethernet communication control device 100) is powered by one or more isolated intrinsically safe power supplies 202. The resulting fully-mechanized face communication network 200 system may employ a two-core automotive physical layer interface converter 203 interconnected with a common ethernet interface device 204.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. An ethernet communication control device, comprising:
an Ethernet switch chip having at least two core physical layer interfaces supporting BroadR-Reach or 100BASE-T1 or 1000 BASE-T1;
two intrinsically safe isolation coupling units which are respectively in communication connection with two-core physical layer interfaces of the Ethernet switch chip; the method comprises the steps of,
a communication function management configuration unit in communication connection with the ethernet switch chip, where the communication function management configuration unit is used for performing management configuration on the two-core physical layer interface and the ethernet switch function;
signals sent by two-core physical layer interfaces of the Ethernet switch chip are connected to an external cable or a cable connector after passing through the intrinsically safe isolation coupling unit, and the two-core physical layer interfaces work in a master-slave mode, wherein clocks of the slave two-core physical layer interfaces follow clocks of the master two-core physical layer interfaces;
the intrinsic safety type isolation coupling unit is a high-frequency transformer, and the power frequency withstand voltage between the primary side and the secondary side of the high-frequency transformer is larger than the intrinsic safety standard specified value; or,
the intrinsically safe isolation coupling unit is a capacitive isolation and signal coupler which is respectively connected in series on two core wires of the two-core physical layer interface, and the capacitive isolation and signal coupler is formed by connecting at least two solid capacitors with withstand voltage greater than an intrinsic safety standard specified value in series.
2. The ethernet communication control device according to claim 1, wherein the two-core physical layer interface is a two-core physical layer interface chip based on BroadR-Reach or 100BASE-T1 or 1000BASE-T1, and the two-core physical layer interface chip is connected to the ethernet switch chip through an MII type interface; or, the two-core physical layer interface is an integrated two-core physical layer interface based on a BroadR-Reach or 100BASE-T1 or 1000BASE-T1, and the integrated two-core physical layer interface is embedded in the ethernet switch chip.
3. The ethernet communication control device according to claim 1, wherein the communication function management configuration unit is a single-chip microcomputer or an embedded CPU;
when the communication function management configuration unit is a singlechip, the Ethernet switch chip is provided with at least one MII interface, RMII interface or SMI interface for being connected with the singlechip, and the singlechip is in communication connection with the Ethernet switch chip through the MII interface, the RMII interface or the SMI interface, so that the communication connection with two-core physical layer interfaces is realized; or the singlechip is directly communicated with the Ethernet switch chip and the two-core physical layer interfaces through an SPI interface or an SMI interface;
when the communication function management configuration unit is an embedded CPU, the embedded CPU is integrated in an internal processor of the ethernet switch chip.
4. An ethernet communication control device according to any of claims 1-3, characterized in that the ethernet switch chip further has at least one interface for extending communication and monitoring applications.
5. An ethernet communications control device according to any of claims 1-3, wherein the device is powered by an intrinsically safe power source.
6. A fully-mechanized coal face communication network, characterized in that the fully-mechanized coal face communication network is formed by connecting at least two ethernet communication control devices according to any one of claims 1-4 in series, two adjacent ethernet communication control devices are connected in series through the two-core physical layer interfaces, one of the two-core physical layer interfaces connected in series is a main two-core physical layer interface, and the other is a slave two-core physical layer interface.
7. The fully-mechanized coal face communication network of claim 6, wherein the ethernet communication control devices connected in series are powered by one intrinsically safe power source or by multiple intrinsically safe power sources isolated from each other.
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| CN110944479B (en) * | 2018-09-25 | 2021-11-30 | 武汉恩达通科技有限公司 | High-speed network device with multistage electric isolation |
| CN109343412A (en) * | 2018-11-05 | 2019-02-15 | 郑州煤机液压电控有限公司 | Hydraulic support electronic control system signal coupler |
| CN109162745A (en) * | 2018-11-05 | 2019-01-08 | 郑州煤机液压电控有限公司 | The means of communication of hydraulic support electrohydraulic control system |
| CN109327369A (en) * | 2018-11-05 | 2019-02-12 | 郑州煤机液压电控有限公司 | Mine hydraulic bracket communication network extender and its application method |
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