Mine intrinsically safe Gigabit ring network switch and mining industrial ring network system

Abstract

The embodiment of the present invention discloses a mining intrinsically safe gigabit ring network switch and a mining industrial ring network system. The mining intrinsically safe gigabit ring network switch includes: a housing, an optical fiber interface embedded in the housing wall for connecting a quick-plug optical fiber connector and at least two connector interfaces for connecting a mining sheath connector, and a switch board located in the housing and at least one power line communication conversion module connected to the switch board; wherein a connector interface for accessing an external power supply is respectively connected to the switch board and each power line communication conversion module; an optical fiber interface for accessing gigabit optical fiber is connected to the switch board, and other connector interfaces for connecting external devices are respectively connected to each power line communication conversion module. The technical solution of the present invention can greatly reduce the complexity of power supply for equipment in mines while ensuring the reliability of data transmission, and has the characteristics of detachable optical fiber components, low connector loss, and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of intrinsically safe switches for mining, and in particular to an intrinsically safe gigabit ring network switch for mining and a mining industrial ring network system. Background Art

[0002] At present, the mining Gigabit Ethernet fiber ring network is the main component of the mine information system, which is mainly composed of mining optical fiber and mining Gigabit Ethernet ring network switches. Since the ring network complies with the IEEE802.3 Ethernet standard, it can provide 1000M Fast Ethernet capabilities using optical fiber transmission, and supports a variety of flexible redundant ring network combination architectures, and has network self-healing functions, etc., it is often used as an underground wired broadband network communication system. However, due to the harsh environment underground in the mine, how to provide a stable and reliable network communication platform for this harsh on-site environment is a difficult problem.

[0003] On the one hand, most of the current intrinsically safe cameras and other equipment need to be powered independently, and when connected to the mine intrinsically safe switch for data transmission, the system complexity is increased by laying many cables; in addition, the current mine intrinsically safe switches basically use RJ485 bus access, so it is often necessary to configure the corresponding mine serial port server separately. On the other hand, most of the current intrinsically safe switches form an optical ring network through mine pigtails. Since the connection performance of the mine pigtail connector is poor and the mine pigtail is easy to break, it is easy to cause unstable communication links. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a mining intrinsically safe gigabit ring network switch and a mining industrial ring network system.

[0005] One embodiment of the present invention provides a mining intrinsically safe gigabit ring network switch, comprising: a housing, an optical fiber interface embedded in the housing wall for connecting a quick-plug optical fiber connector and at least two connector interfaces for connecting a mining sheath connector, a switch card located in the housing and at least one power line communication conversion module connected to the switch card;

[0006] Among them, a connector interface for accessing an external power supply through the mining sheath connector is used to connect the switch board and each of the power line communication conversion modules respectively; an optical fiber interface for accessing a gigabit optical fiber through the quick-plug optical fiber connector is used to connect the switch board;

[0007] Other connector interfaces for connecting external devices through other mining sheath connectors are respectively connected one-to-one with each of the power line communication conversion modules; each of the power line communication conversion modules is used to convert the 4-core cable network transmission signal output by the switch board into a 2-core cable network transmission signal for inputting the external device.

[0008] Further, in the above-mentioned mining intrinsically safe gigabit ring network switch, the quick-plug optical fiber connector correspondingly connected to the optical fiber interface; and / or,

[0009] The mining sheath connector is connected correspondingly to each of the connector interfaces.

[0010] Further, in the above-mentioned mining intrinsically safe gigabit ring network switch, the mining sheath connector is a four-core cable structure, and the connector interface includes a four-core structure matching the four-core cable structure;

[0011] Two cores of each of the other connector interfaces are connected to an internal power line for powering the corresponding external device, and the other two cores are connected to a corresponding power line communication conversion module for communicating with the external device; wherein the internal power line connects the switch board and the power input terminal of each of the power line communication conversion modules.

[0012] Furthermore, in the above-mentioned intrinsically safe gigabit ring network switch for mining, the power line communication conversion modules include three, and each of the power line communication conversion modules is an RJ45 to RJ11 power line communication module.

[0013] Furthermore, in the above-mentioned mining intrinsically safe gigabit ring network switch, the mining sheath connectors include four, one is connected to the connector interface for accessing an external power supply, and the other three are respectively connected to the three power line communication conversion modules.

[0014] Furthermore, in the above-mentioned intrinsically safe gigabit ring network switch for mining, the quick-plug optical fiber connector is provided with a three-bend groove anti-loosening structure.

[0015] Furthermore, in the above-mentioned intrinsically safe gigabit ring network switch for mining, the quick-plug fiber optic connector is a J599 aviation connector.

[0016] Furthermore, in the above-mentioned intrinsically safe gigabit ring network switch for mining, it also includes: a connector interface connected to the switch board as a spare.

[0017] Furthermore, in the above-mentioned intrinsically safe Gigabit Ethernet ring network switch for mining, the switch board adopts an industrial-grade optoelectronic Gigabit Ethernet ring network switch; the industrial-grade optoelectronic Gigabit Ethernet ring network switch includes 4 Gigabit Ethernet optical media modules and 8 Gigabit Ethernet transceiver media modules.

[0018] Another embodiment of the present invention provides an industrial ring network system for mining, comprising a core switch, a plurality of ring network switches and external devices connected in sequence, each of the ring network switches adopts the above-mentioned intrinsically safe gigabit ring network switch for mining.

[0019] The technical solution of the present invention is provided with an optical fiber interface to realize the access to the gigabit optical fiber by using a quick-plug optical fiber connector, which not only facilitates the on-site installation and detachability of the optical fiber combination, but also has higher reliability; at the same time, a power line communication conversion module is used inside the switch to convert the 4-core cable (RJ45) transmission of the traditional Ethernet into a 2-core cable (RJ11) transmission, and multiple connector interfaces are provided to connect multiple external devices through the mining sheath connector, which can well solve the problem of not being applicable to intrinsically safe external devices compared to the configuration of the RJ45 interface in the prior art; and compared to the configuration of the RS485 serial port in the prior art, there is no need to configure the corresponding serial port server, which reduces the complexity of the system, etc. In addition, the other 2 cores of the mining sheath connector can also be used to power the external device, that is, to realize the structure of 2-core power supply plus 2-core transmission, and there is no need to provide an additional power supply device for the external device, which further reduces the complexity of the system, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope of protection of the present invention. In each of the drawings, similar components are numbered similarly.

[0021] Figure 1 A first structural schematic diagram of a mining intrinsically safe gigabit ring network switch according to an embodiment of the present invention is shown;

[0022] Figure 2 A second structural schematic diagram of a mining intrinsically safe gigabit ring network switch according to an embodiment of the present invention is shown;

[0023] Figure 3(a)-Figure 3(b) The schematic diagram of the appearance structure and the schematic diagram of the four-core structure of the mining sheath connector of the mining intrinsically safe gigabit ring network switch according to the embodiment of the present invention are shown;

[0024] Figure 4 A schematic structural diagram of a mining industrial ring network system according to an embodiment of the present invention is shown.

[0025] Description of main component symbols:

[0026] 1- mining industrial ring network system; 10- mining intrinsically safe Gigabit ring network switch; 10'- ring network switch; 20- core switch; 30- external equipment; 101- housing; 102- optical fiber interface; 103- connector interface; 104- switch board; 105- power line communication conversion module; 110- mining sheath connector; 111- double-layer steel wire braided hose; 112- steel head connector; 113- fastener; 114- pin; 115- pinhole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0030] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0031] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present invention belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present invention.

[0032] Example 1

[0033] Please refer to Figure 1 and Figure 2 This embodiment provides a mining intrinsically safe gigabit ring network switch 10, which can be applied to wired network communications in mines, and is particularly suitable for building mining industrial ring network systems. The mining intrinsically safe gigabit ring network switch 10 has the characteristics of simpler structure and more reliable optical fiber ring network transmission. The structure of the mining intrinsically safe gigabit ring network switch 10 is described in detail below.

[0034] Exemplarily, the mining intrinsically safe gigabit ring network switch 10 mainly comprises: a housing 101, at least one optical fiber interface 102 and at least two connector interfaces 103 embedded in the wall of the housing 101, a switch board 104 located in the housing 101, and at least one power line communication conversion module 105 connected to the switch board 104. Each of the above optical fiber interfaces 102 is used to connect to a corresponding quick-plug optical fiber connector; and each of the above connector interfaces 103 is used to connect to a corresponding mining sheath connector.

[0035] For example, Figure 2 As shown, for the at least two connector interfaces 103, one connector interface 103 is simultaneously connected to the switch board 104 and each power line communication conversion module 105, so as to be connected to an external power source through a mining jacket connector, so that the external power source can provide the required working voltage for the board and each module; and the other connector interfaces 103 are respectively connected to each power line communication conversion module 105, that is, one power line communication conversion module 105 is connected to one connector interface 103. These other connector interfaces 103 are mainly used to connect corresponding external devices through other mining jacket connectors, so as to realize information interaction between each external device and the switch board 104, etc.

[0036] Each optical fiber interface 102 is respectively connected to the switch board 104, and the optical fiber interface 102 is mainly used to connect the gigabit optical fiber to the switch board 104 through a quick-plug optical fiber connector. Usually, the switch board 104 is provided with an optical-electric conversion module interface, and each optical fiber interface 102 will be connected to the corresponding optical-electric conversion module interface. It can be understood that the gigabit optical fiber can realize gigabit network signal transmission in the ring network composed of multiple mining intrinsically safe gigabit ring network switches 10.

[0037] The power line communication conversion module 105 is mainly used to convert the 4-core cable network transmission signal output by the switch board 104 into a 2-core cable network transmission signal for input to an external device. In addition, the power line communication conversion module 105 can also be used to convert the 2-core signal output by an external device into a 4-core signal and then input it into the switch board 104, thereby realizing two-way data interaction, etc.

[0038] Preferably, the power line communication conversion module 105 will use an RJ45 to RJ11 power line communication module. Among them, the RJ45 Ethernet interface is a 4-core cable transmission interface, and the RJ11 interface is a 2-core cable transmission interface. The power line communication conversion module 105 can easily realize the conversion of two different transmission protocols. For downstream external devices with 100M transmission, the RJ11 interface is fully applicable.

[0039] Considering that existing intrinsically safe cameras or other mining electrical equipment are often powered independently, it means that additional power line wiring is required. For mine scenarios with harsh environments, the complexity of the system is increased and the system reliability is reduced. For this reason, this embodiment proposes a transmission architecture that uses a 2-core cable for power supply and a 2-core cable for data transmission, so as to realize the power supply and interaction between the switch and external devices. In this way, there is no need to connect additional power cables to external devices, which can greatly reduce the complexity of the system.

[0040] Preferably, the mining sheath connector 110 used to connect the switch board 104 and the external device adopts a four-core cable transmission structure. Exemplarily, as shown in FIG3(a), the mining sheath connector 110 adopts an explosion-proof double-layer steel wire braided hose 111, with steel head connectors 112 at both ends, and the double-layer steel wire braided hose 111 and the steel head connector 112 are connected by fasteners 113 to ensure a stable connection. Among them, the two ends of the mining sheath connector 110 are symmetrical structures, each end includes 2 pins 114 and 2 pinholes 115, as shown in FIG3(b), that is, a four-core structure is formed.

[0041] Correspondingly, the connector interface 103 on the switch will include a four-core structure that matches the four-core cable structure. Figure 2 As shown, for the above-mentioned other connector interface 103, 2 cores thereof are connected to the internal power line, and the other 2 cores are connected to the corresponding power line communication conversion module 105, thereby forming a 2-core cable for powering the corresponding connected external device, and the other 2-core cable is used to communicate with the external device. Among them, the internal power line is an internal wire for accessing an external power source, which connects the switch board 104 and the power input terminal of each power line communication conversion module 105.

[0042] In this embodiment, preferably, four connector interfaces 103 are provided, one of which is used to connect to an external power source, and the other three are used to connect to three power line communication modules. Preferably, the four connector interfaces 103 are located on the same side wall of the housing 101. It should be understood that in actual applications, the number of the connector interfaces 103 can be set according to actual needs.

[0043] Optionally, the mining intrinsically safe gigabit ring network switch 10 further includes: a spare connector interface connected to the switch board 104 , preferably, the spare connector interface adopts the above-mentioned connector interface 103 .

[0044] In this embodiment, the quick-plug type optical fiber connector used to connect the optical fiber interface 102 can adopt a bayonet connection method, and has an anti-loosening mechanism, preferably a three-curved groove structure, so that the quick-plug type optical fiber connector and the optical fiber interface 102 can be quickly connected and separated by rotating 120 degrees. Further preferably, the quick-plug type optical fiber connector adopts a J599 aviation connector. The aviation connector can not only realize the rapid detachability of the optical fiber assembly, but also has the characteristics of small size and light weight, and also has electromagnetic shielding function, low loss, high reliability, etc.

[0045] In an optional embodiment, the mining intrinsically safe gigabit ring network switch 10 further includes: a mining sheath connector 110 correspondingly connected to each connector interface 103, preferably, the above-mentioned mining sheath connector 110 with a four-core cable transmission structure is adopted.

[0046] In another optional embodiment, the mining intrinsically safe gigabit ring network switch 10 further includes: a quick-plug optical fiber connector correspondingly connected to the optical fiber interface 102. Preferably, the quick-plug optical fiber connector will adopt the above-mentioned J599 aviation connector.

[0047] Furthermore, the mining intrinsically safe gigabit ring network switch 10 further includes: an LED indicator light located on the housing wall, the LED indicator light being electrically connected to the switch board 104, so as to indicate the working state of the switch. Exemplarily, the LED indicator light can be a light emitting diode or the like.

[0048] The switch board 104 will use an industrial-grade photoelectric Gigabit Ethernet ring switch. In one embodiment, for example, an industrial-grade photoelectric Gigabit Ethernet ring switch such as model VT-FG204S can be used, which includes 4 Gigabit Ethernet optical media modules (model HW-P4201D) and 8 Gigabit Ethernet transceiver media modules (model HW-648I). It should be understood that in actual applications, the switch board 104 can be selected with different performance or different models according to the actual application occasion.

[0049] The mining intrinsically safe gigabit ring network switch of this embodiment uses a power line communication conversion module inside the switch to realize the conversion of the 4-core cable (RJ45) transmission of the traditional Ethernet into a 2-core cable (RJ11), and is provided with an optical fiber interface to realize the access to the gigabit optical fiber using a quick-plug optical fiber connector, which is not only convenient for the on-site installation and detachability of the optical fiber combination, but also significantly improves its reliability compared to the existing use of mining pigtails; it is also provided with multiple connector interfaces to connect multiple external devices through mining sheath connectors, which can well solve the problem of inapplicability to intrinsically safe external devices (such as intrinsically safe cameras, etc.) compared to the prior art which is mostly configured as RJ45 interfaces; and compared to the prior art which is configured as RS485 serial ports, the system does not need to configure the corresponding serial port server, which reduces the complexity of the system, etc. In addition, the other 2 cores of the mining sheath connector can also be used to power the external device, that is, to realize a four-core transmission structure of 2-core power supply plus 2-core transmission, and no additional power supply device is required for the external device, which can further reduce the complexity of the system, etc.

[0050] Example 2

[0051] Please refer to Figure 4 This embodiment proposes a mining industrial ring network system 1, including at least one core switch 20, multiple ring network switches 10' and at least one external device 30 connected in sequence. Among them, the ring network switch 10' will adopt the mining intrinsically safe gigabit ring network switch 10 in the above embodiment 1. It can be understood that the options in the above embodiment 1 are also applicable to this embodiment and will not be described in detail here.

[0052] Exemplarily, each ring network switch 10' can be connected to a Gigabit optical fiber through the above-mentioned quick-plug optical fiber connector and transmit Gigabit network signals. In addition, the multiple ring network switches 10' can be used for uplink communication transmission of Gigabit Ethernet with the core switch 20, and for downlink communication transmission of 100M Ethernet with multiple external devices 30. For example, the external device 30 may include but is not limited to a network camera, a card reader server, a mining explosion-proof controller, an underground monitoring server, etc.

[0053] The functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0054] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mining intrinsically safe gigabit ring network switch, characterized in that: include: A housing, an optical fiber interface embedded in the housing wall for connecting a quick-insert optical fiber connector and at least two connector interfaces for connecting a mining sheath connector, a switch card located in the housing and at least one power line communication conversion module connected to the switch card; Wherein, a connector interface for accessing an external power supply through the mining sheath connector is respectively connected to the switch board and each of the power line communication conversion modules; The optical fiber interface for accessing the gigabit optical fiber through the quick-plug optical fiber connector is connected to the switch board; Other connector interfaces for connecting external devices through other mining sheath connectors are respectively connected to the power line communication conversion modules in a one-to-one correspondence; Each of the power line communication conversion modules is used to convert the 4-core cable network transmission signal output by the switch board into a 2-core cable network transmission signal for inputting into the external device; Wherein, each of the power line communication conversion modules is also used to convert the 2-core cable network transmission signal output by the external device into a 4-core cable network transmission signal for inputting the switch board; The power line communication conversion modules include three, and each of the power line communication conversion modules is an RJ45 to RJ11 power line communication module.

2. The mining intrinsically safe gigabit ring network switch according to claim 1, characterized in that: Also includes: The quick-plug optical fiber connector correspondingly connected to the optical fiber interface; and / or, The mining sheath connector is connected correspondingly to each of the connector interfaces.

3. The mining intrinsically safe gigabit ring network switch according to claim 1 or 2, characterized in that: The mining sheath connector is a four-core cable structure, and the connector interface includes a four-core structure matching the four-core cable structure; Two cores of each of the other connector interfaces are connected to the internal power line for powering the corresponding external device, and the other two cores are connected to the corresponding power line communication conversion module for communicating with the external device; Wherein, the internal power line is connected to the switch board and the power input end of each of the power line communication conversion modules.

4. The mining intrinsically safe gigabit ring network switch according to claim 1, characterized in that: The mining sheath connectors include four, one of which is connected to the connector interface for accessing an external power supply, and the other three are respectively connected to three power line communication conversion modules.

5. The mining intrinsically safe gigabit ring network switch according to claim 1, characterized in that: The quick-insert optical fiber connector is provided with a three-bend groove anti-loosening structure.

6. The intrinsically safe gigabit ring network switch for mining according to claim 5, characterized in that: The quick-insert optical fiber connector is a J599 aviation connector.

7. The mining intrinsically safe gigabit ring network switch according to claim 4, characterized in that: Also includes: A connector interface connected to the switch board as a spare.

8. The mining intrinsically safe gigabit ring network switch according to claim 1, characterized in that: The switch board adopts an industrial-grade photoelectric Gigabit Ethernet ring switch; the industrial-grade photoelectric Gigabit Ethernet ring switch includes 4 Gigabit Ethernet optical media modules and 8 Gigabit Ethernet transceiver media modules.

9. A mining industrial ring network system, characterized in that: It comprises a core switch, a plurality of ring network switches and external devices connected in sequence, and each of the ring network switches is a mining intrinsically safe gigabit ring network switch according to any one of claims 1 to 8.

Images